ComponentsPassive ComponentsSignal & CommunicationsSignal Transformer

WE-STST Super Tiny Signal Transformer

WE-STST Super Tiny Signal Transformer
SizeDimen­sions3DL
(mm)		W
(mm)		H
(mm)		Mount
4532
 4.7 3.22 2.9 SMT

LTSpice files

Characteristics

  • Super small size
  • 1.5 kV isolation voltage
  • 350 µH OCL as per IEEE 802.3
  • Operating temperature: -40 °C up to +105 °C

Reference Designs

  • RD016 Reference Design Gigabit Ethernet Front End
  • RD041 Design of a Single Pair Ethernet System with Power over Data Lines (SPoE)

Applications

  • Ethernet 10/100/1000 Base-T
  • Ethernet 2.5/5G and 10G Base-T
  • Single Pair Ethernet
  • Ultrasonic sensors
  • g.fast

Application Notes

One Pair is all you need.

The WE-LAN AQ is a LAN transformer manufactured by a fully automated production process.

Video and more

Products

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L(µH)
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WE-STST Super Tiny Signal Transformer
74930000
SPEC10/100/1000 Base-T, 10/100 Base-T1, Ethernet, Single Pair Ethernet, 350 µH
Availability
–
Downloads10 files

Status Activei| Production is active. Expected lifetime: >10 years.
Data rate10/100/1000 Base-T, 10/100 Base-T1 
ApplicationEthernet, Single Pair Ethernet 
Inductance350 µH
Insulation Test Voltage1500 V (RMS)
Turns Ratio1:1 
–
Operating Temperature -40 °C up to +105 °C
Length4.7 mm
Width3.22 mm
Height2.9 mm
–Check availability
WE-STST Super Tiny Signal Transformer
74930100
SPEC10G Base-T, 1000 Base-T1, Ethernet, Single Pair Ethernet, 120 µH
Availability
–
Downloads9 files

Status Activei| Production is active. Expected lifetime: >10 years.
Data rate10G Base-T, 1000 Base-T1 
ApplicationEthernet, Single Pair Ethernet 
Inductance120 µH
Insulation Test Voltage1500 V (RMS)
Turns Ratio1:1 
–
Operating Temperature -40 °C up to +105 °C
Length4.7 mm
Width3.22 mm
Height2.9 mm
–Check availability
WE-STST Super Tiny Signal Transformer
74930130
SPEC10/100/1G/10GBase-T, Ethernet, PoE, 110 µH
Availability
–
Downloads8 files

Status Activei| Production is active. Expected lifetime: >10 years.
Data rate10/100/1G/10GBase-T 
ApplicationEthernet, PoE 
Inductance110 µH
Insulation Test Voltage1500 V (RMS)
Turns Ratio1:1 
PoEPoE (up to 350 mA) 
Operating Temperature -40 °C up to +105 °C
Length4.7 mm
Width3.22 mm
Height2.9 mm
–Check availability
WE-STST Super Tiny Signal Transformer
74930030
SPEC10/100/1GBase-T, Ethernet, PoE, 350 µH
Availability
–
Downloads8 files

Status Activei| Production is active. Expected lifetime: >10 years.
Data rate10/100/1GBase-T 
ApplicationEthernet, PoE 
Inductance350 µH
Insulation Test Voltage1500 V (RMS)
Turns Ratio1:1 
PoEPoE (up to 350 mA) 
Operating Temperature -40 °C up to +105 °C
Length4.7 mm
Width3.22 mm
Height2.9 mm
–Check availability
WE-STST Super Tiny Signal Transformer
74930120
SPEC10/100/1G/10GBase-T, Ethernet, PoE+, 110 µH
Availability
–
Downloads8 files

Status Activei| Production is active. Expected lifetime: >10 years.
Data rate10/100/1G/10GBase-T 
ApplicationEthernet, PoE+ 
Inductance110 µH
Insulation Test Voltage1500 V (RMS)
Turns Ratio1:1 
PoEPoE+ (up to 600 mA) 
Operating Temperature -40 °C up to +105 °C
Length4.7 mm
Width3.22 mm
Height2.9 mm
–Check availability
WE-STST Super Tiny Signal Transformer
749302010
SPEC–, Short distance sensing at high frequency, 300 µH
Availability
–
Downloads8 files

Status Activei| Production is active. Expected lifetime: >10 years.
–
ApplicationShort distance sensing at high frequency 
Inductance300 µH
Insulation Test Voltage400 V (RMS)
Turns Ratio1:4.5:4.5:1 
–
Operating Temperature -40 °C up to +105 °C
Length4.7 mm
Width3.22 mm
Height2.9 mm
–Check availability
WE-STST Super Tiny Signal Transformer
749302011
SPEC–, Long distance sensing at low frequency, 2000 µH
Availability
–
Downloads8 files

Status Activei| Production is active. Expected lifetime: >10 years.
–
ApplicationLong distance sensing at low frequency 
Inductance2000 µH
Insulation Test Voltage400 V (RMS)
Turns Ratio1:4.5:4.5:1 
–
Operating Temperature -40 °C up to +105 °C
Length4.7 mm
Width3.22 mm
Height2.9 mm
–Check availability

Long Reach High-Speed Communication with WE-STST Transformers

As industries continue to demand reliable and efficient long-distance data transmission, the need for high-performance transformers in DSL and ISDN applications remains critical. Würth Elektronik’s WE-STST signal transformers are optimized for "long reach high speed" applications, offering exceptional performance in extending data coverage without compromising speed or integrity.

Key Use Cases

  • SHDSL Technology:WE-STST series supports Symmetrical High-Speed Digital Subscriber Line (SHDSL) technology, which enables long-distance communication with consistent, high-quality signal transmission.
  • Industrial Communication: Ideal for connecting devices across large industrial plants where stable data communication is essential.
  • Telecom Infrastructure: Provides reliable signal transformation for telecommunications systems requiring extended reach.

Product Highlights

  • Low insertion loss for efficient signal transmission
  • High galvanic isolation to ensure safety and reliability
  • Supporting long signalling distances
  • Also suitable to use for DSL and ISDN
WE-STST eiSos Component

Suitable for

WR-MJ Modular Jacks
WE-CNSW SMT Common Mode Line Filter
WE-TVS TVS Diode – Standard Series
WCAP-CSMH Mid and High Voltage

Videos

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