IC manufacturers Onsemi

IC manufacturers (108)

Onsemi NCP1681 | Demoboard Totem-Pole PFC

NCP1681

Overview

TopologyPower Factor Correction
Input voltage95-245 V
Output 1375 V / 3 A
IC revision1

Description

1kW Totem-Pole PFC for Telecom Applications - Stand-by card and MainboardThe NCP1681 is a PFC controller IC designed to drive the bridgeless totem-pole PFC topology. The bridgeless totem-pole PFC is a power factor correction architecture that consists of a fast switching leg driven at the PWM switching frequency and a second leg that operates at the AC line frequency. This topology eliminates the diode bridge present at the input of a conventional PFC circuit, allowing significant improvement in the power stage efficiency. The controller can be configured to operate in Continuous Conduction Mode (CCM) or Multi-Mode (CrM-CCM) operation.

Features

Totem Pole PFC Topology Eliminates Input Diode BridgeContinuous Conduction Mode (CCM) Operation At High Power LevelOptional Multi-mode Operation With CCM at High Power & CrM at Medium Power LevelFrequency Foldback in DCM With 25 kHz Minimum FrequencySkip Mode in Very Light Load ConditionNovel Current Sense SchemeDigital Voltage Loop CompensationAC Line Monitoring Circuit & AC Phase DetectionNear Unity Power Factor in All Operating ModesPFC OK Indicator

Typical applications

  • PFC, Telecom, Server

Parts approved by Onsemi

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Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
Pins
Application
PCB/Cable/Panel
Modularity
Wire Section
C
Tol. C
Operating Temperature
Safety Class
VIMP(V (DC))
DF(%)
RISO
Ceramic Type
Fl(mm)
Packaging
dV/dt(V/µs)
DF @ 1 kHz(%)
Pitch(mm)
ISAT(A)
fres(MHz)
Endurance(h)
IRIPPLE(mA)
ILeak(µA)
Ø D(mm)
RESR(mΩ)
Ø Cable max.(mm)
Ø OD(mm)
Ø ID(mm)
Z @ 25 MHz
1 turn
(Ω)
Z @ 100 MHz
1 turn
(Ω)
Z @ 100 MHz(Ω)
Zmax(Ω)
Test Condition Zmax
IR 2(mA)
RDC max.(mΩ)
Type
IR(A)
L(mH)
VR(V (AC))
VT(V (AC))
Material
L(mm)
W(mm)
H(mm)
Mount
VRMS(V)
VDC(V)
VBR(V)
IPeak(A)
Wmax(J)
PDiss(W)
VDE Approval
VIN(V)
VOut1(V)
IOut1(A)
VOut2(V)
IOut2(A)
Vaux(V)
fswitch
n
IR(A)
RDC 1(mΩ)
RDC 2(mΩ)
RDC 3(mΩ)
RDC 4(mΩ)
Size
LS(µH)
SamplesAvailability & Sample
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SPECWR-TBL Series 2109 - 2.54 mm Horiz. Entry, 2, Rising Cage Clamp
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ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Pins2 
ApplicationRising Cage Clamp 
PCB/Cable/PanelPCB 
ModularityNo 
Wire Section 30 to 18 (AWG) 0.2 to 0.75 (mm²)
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Operating Temperature -40 °C up to +105 °C
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Pitch2.54 mm
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TypeHorizontal 
Rated Current6 A
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SPECWR-TBL Series 2365 - 5.08 mm Horiz. Entry w. Rising Cage Clamp, 2, Rising Cage Clamp
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ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Pins2 
ApplicationRising Cage Clamp 
PCB/Cable/PanelPCB 
ModularityYes 
Wire Section 12 to 30 (AWG) 3.31 to 0.0509 (mm²)
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Operating Temperature -30 °C up to +110 °C
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Pitch5.08 mm
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TypeHorizontal Cable Entry 
Rated Current20 A
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Length10.16 mm
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SPECWR-TBL Series 2365 - 5.08 mm Horiz. Entry w. Rising Cage Clamp, 3, Rising Cage Clamp
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Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Pins3 
ApplicationRising Cage Clamp 
PCB/Cable/PanelPCB 
ModularityYes 
Wire Section 12 to 30 (AWG) 3.31 to 0.0509 (mm²)
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Operating Temperature -30 °C up to +110 °C
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Pitch5.08 mm
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TypeHorizontal Cable Entry 
Rated Current20 A
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Length15.24 mm
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SPECWE-CMB Common Mode Power Line Choke, 4, –
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ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Pins4 
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DC Resistance9 mΩ
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Rated Current12 A
Inductance1 mH
Rated Voltage250 V (AC)
Insulation Test Voltage1500 V (AC)
MaterialMnZn 
Length31 mm
Width22 mm
Height35 mm
MountTHT 
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VDE Approval40042670 
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Rated Current12 A
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SizeXL 
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SPECWE-CBF SMT EMI Suppression Ferrite Bead, –, –
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ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
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Operating Temperature -55 °C up to +125 °C
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Pad Dimension0.5 mm
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Impedance @ 100 MHz10 Ω
Maximum Impedance20 Ω
Maximum Impedance1000 MHz 
Rated Current 23000 mA
DC Resistance25 mΩ
TypeHigh Current 
Rated Current2 A
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Length2 mm
Width1.2 mm
Height0.9 mm
MountSMT 
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Rated Current3 A
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Size0805 
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SPECWE-AFB, –, –
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Downloads2 files

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ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWE-AFB
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Operating Temperature -25 °C up to +125 °C
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Cable Diameter Max.4.4 mm
Outer Diameter9.5 mm
Inner Diameter4.75 mm
Impedance @ 25 MHz 1 turn47 Ω
Impedance @ 100 MHz 1 turn68 Ω
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Material3 W 800 
Length9.5 mm
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SPECWE-VD Disk Varistor, –, 230 VAC
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ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWE-VD Disk Varistor
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Application230 VAC 
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Operating Temperature -40 °C up to +105 °C
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Diameter16.5 mm
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Length16.5 mm
Width4.8 mm
Height20.5 mm
MountTHT 
AC Operating Voltage320 V
DC Operating Voltage418 V
(Reverse) Breakdown Voltage510 V
(Reverse) Peak Pulse Current6000 A
Energy Absorption190 J
Power Dissipation0.6 W
VDE ApprovalYes 
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Size14 mm 
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SPECWCAP-FTXX Film Capacitors, –, Across the mains
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Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
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ApplicationAcross the mains 
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Capacitance220 nF
Capacitance±10% 
Operating Temperature -40 °C up to +105 °C
Safety ClassX2 
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Insulation Resistance30 GΩ
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PackagingCarton 
Rate of Voltage Rise180 V/µs
Dissipation Factor0.1 %
Pitch15 mm
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Rated Voltage310 V (AC)
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Length18 mm
Width6 mm
Height11.5 mm
MountBoxed THT 
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SizePitch: 15 mm 
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SPECWCAP-FTXX Film Capacitors, –, Across the mains
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Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
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ApplicationAcross the mains 
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Capacitance2.2 µF
Capacitance±10% 
Operating Temperature -40 °C up to +105 °C
Safety ClassX2 
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Insulation Resistance4.55 GΩ
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PackagingCarton 
Rate of Voltage Rise170 V/µs
Dissipation Factor0.1 %
Pitch22.5 mm
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Rated Voltage310 V (AC)
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Length26 mm
Width15 mm
Height25 mm
MountBoxed THT 
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SizePitch 22.5 mm 
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SPECWCAP-FTXX Film Capacitors, –, Across the mains
Simu­lation
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Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
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ApplicationAcross the mains 
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Capacitance3.3 µF
Capacitance±10% 
Operating Temperature -40 °C up to +105 °C
Safety ClassX2 
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Insulation Resistance3.03 GΩ
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PackagingCarton 
Rate of Voltage Rise130 V/µs
Dissipation Factor0.1 %
Pitch27.5 mm
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Rated Voltage310 V (AC)
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Length31 mm
Width15.5 mm
Height29 mm
MountBoxed THT 
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SizePitch 27.5 mm 
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SPECWE-FI Leaded Toroidal Line Choke, –, –
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ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
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DC Resistance45 mΩ
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Rated Current6.1 A
Inductance0.15 mH
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Length27.5 mm
Width13.6 mm
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MountTHT 
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SPECWE-SI Leaded Toroidal Storage Choke, –, –
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ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
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Operating Temperature -40 °C up to +105 °C
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Pitch1.2 mm
Saturation Current4 A
Self Resonant Frequency25 MHz
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Diameter28.5 mm
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DC Resistance15 mΩ
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Rated Current10.3 A
Inductance0.026 mH
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Length28.5 mm
Width14.5 mm
Height12 mm
MountTHT 
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SPECWE-UOST Universal Offline Standard Transformers, –, –
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ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
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Operating Temperature -40 °C up to +125 °C
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Saturation Current0.8 A
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Inductance1.25 mH
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Insulation Test Voltage4200 V (AC)
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Length25.81 mm
Width16.6 mm
Height13.5 mm
MountSMT 
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Input Voltage 85 - 265 V (AC)
Output Voltage 112 V
Output Current 10.55 A
Output Voltage 212 V
Output Current 20.55 A
Auxiliary Voltage14 V
Switching Frequency60-150 
Turns Ratio136 : 13 : 13 : 15 
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DC Resistance 12920 mΩ
DC Resistance 292 mΩ
DC Resistance 392 mΩ
DC Resistance 4400 mΩ
SizeEE16/8/5 
Leakage Inductance53 µH
–Check availability
SPECWCAP-ATG5 Aluminum Electrolytic Capacitors, –, –
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ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
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Capacitance10 µF
Capacitance±20% 
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Dissipation Factor15 %
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PackagingAmmopack 
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Pitch5 mm
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Endurance 2000
Ripple Current104 mA
Leakage Current120 µA
Diameter10 mm
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Rated Voltage400 V (AC)
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Length14 mm
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SPECWCAP-ATET Aluminum Electrolytic Capacitors, –, –
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ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
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Capacitance47 µF
Capacitance±20% 
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Dissipation Factor13 %
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PackagingAmmopack 
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Pitch2.5 mm
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Endurance 1000
Ripple Current110 mA
Leakage Current11.75 µA
Diameter6.3 mm
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Rated Voltage25 V (AC)
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Length11 mm
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SPECWCAP-ATLI Aluminum Electrolytic Capacitors, –, –
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ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
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Capacitance680 µF
Capacitance±20% 
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Dissipation Factor8 %
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PackagingAmmopack 
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Pitch7.5 mm
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Endurance 5000
Ripple Current2600 mA
Leakage Current428.4 µA
Diameter16 mm
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Rated Voltage63 V (AC)
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Length31.5 mm
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SPECWCAP-ATUL Aluminum Electrolytic Capacitors, –, –
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ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
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Capacitance47 µF
Capacitance±20% 
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Dissipation Factor9 %
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PackagingAmmopack 
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Pitch3.5 mm
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Endurance 7000
Ripple Current360 mA
Leakage Current29.61 µA
Diameter8 mm
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Rated Voltage63 V (AC)
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Length11.5 mm
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SPECWCAP-PTG5 Aluminum Polymer Capacitors, –, –
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ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
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Capacitance100 µF
Capacitance±20% 
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Dissipation Factor8 %
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PackagingAmmopack 
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Pitch3.5 mm
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Endurance 2000
Ripple Current4500 mA
Leakage Current500 µA
Diameter8 mm
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Rated Voltage25 V (AC)
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Length8 mm
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MountRadial THT 
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SPECWCAP-PTG5 Aluminum Polymer Capacitors, –, –
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Availability
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Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
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Capacitance330 µF
Capacitance±20% 
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Dissipation Factor8 %
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PackagingAmmopack 
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Pitch5 mm
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Endurance 2000
Ripple Current4900 mA
Leakage Current1650 µA
Diameter10 mm
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Rated Voltage25 V (AC)
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Length12.5 mm
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MountRadial THT 
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SPECWCAP-AI3H Aluminum Electrolytic Capacitors, –, –
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Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
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Capacitance220 µF
Capacitance±20 
Operating Temperature -25 °C up to +105 °C
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Dissipation Factor20 %
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PackagingTray 
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Pitch10 mm
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Endurance 3000
Ripple Current1160 mA
Leakage Current945 µA
Diameter22 mm
ESR1210 mΩ
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Rated Voltage450 V (AC)
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Length50 mm
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MountSnap-In 
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Size22.0 x 50.0 
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SPECWCAP-CSSA Interference Suppression, –, –
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ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
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Capacitance2.2 nF
Capacitance±10% 
Operating Temperature -55 °C up to +125 °C
Safety ClassX2 
Impulse Voltage2500 V (DC)
Dissipation Factor2.5 %
Insulation Resistance10 GΩ
Ceramic TypeX7R Class II 
Pad Dimension0.5 mm
Packaging7" Tape & Reel 
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Rated Voltage250 V (AC)
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Length4.5 mm
Width3.2 mm
Height2.5 mm
MountSMT-Chip 
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Size1812 
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SPECWE-TORPFC Toroidal PFC Chokes, –, –
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Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
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Operating Temperature -40 °C up to +155 °C
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Saturation Current10.5 A
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Outer Diameter60 mm
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Rated Current 220800 mA
DC Resistance55 mΩ
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Rated Current9.8 A
Inductance0.51 mH
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Insulation Test Voltage1000 V (AC)
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Height54.5 mm
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Input Voltage 700 - 85
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SizeT43 
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