WE-MCRI SMT Molded Coupled Inductor
| Size | Dimensions | L (mm) | W (mm) | H (mm) | |
|---|---|---|---|---|---|
1040 | 11 | 10 | 4 | ||
1090 | 11 | 10 | 9 |
LTSpice files
Characteristics
- Composite core material allows high saturation current and compact design
- Better Leakage Inductance (Lk) and Rated Current (Ir) than comparable components
- Magnetically shielded
- 1:1 Transformer
- Operation temperature: -40°C to +125°C
Applications
- Isolated converter application (e.g. Flyback converter)
- Buck, Boost, Sepic, Zeta, CUK Converter
- Switching regulator with second, unregulated output voltage
Products
Order Code | Datasheet | Simulation | Downloads | Status | L1(µH) | L2(µH) | n | IR(A) | IR 2(A) | ISAT1(A) | ISAT2(A) | RDC1 typ(mΩ) | RDC2 typ(mΩ) | SamplesAvailability & Sample | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
7448990010 | SPEC1 µH, 1 µH, 1:1 | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Inductance 11 µH | Inductance 21 µH | Turns Ratio1:1 | Rated Current17 A | Rated Current 217 A | Saturation Current 143.5 A | Saturation Current 243.5 A | DC Resistance 14.5 mΩ | DC Resistance 24.5 mΩ | –Check availability | ||
7448991010 | SPEC1 µH, 1 µH, 1:1 | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Inductance 11 µH | Inductance 21 µH | Turns Ratio1:1 | Rated Current12 A | Rated Current 212 A | Saturation Current 130.2 A | Saturation Current 230.2 A | DC Resistance 16.3 mΩ | DC Resistance 26.3 mΩ | –Check availability | ||
7448990015 | SPEC1.5 µH, 1.5 µH, 1:1 | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Inductance 11.5 µH | Inductance 21.5 µH | Turns Ratio1:1 | Rated Current12.5 A | Rated Current 212.5 A | Saturation Current 134 A | Saturation Current 234 A | DC Resistance 18.8 mΩ | DC Resistance 28.8 mΩ | –Check availability | ||
7448991015 | SPEC1.5 µH, 1.5 µH, 1:1 | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Inductance 11.5 µH | Inductance 21.5 µH | Turns Ratio1:1 | Rated Current11.1 A | Rated Current 211.1 A | Saturation Current 128.1 A | Saturation Current 228.1 A | DC Resistance 18.6 mΩ | DC Resistance 28.6 mΩ | –Check availability | ||
7448990022 | SPEC2.2 µH, 2.2 µH, 1:1 | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Inductance 12.2 µH | Inductance 22.2 µH | Turns Ratio1:1 | Rated Current11.5 A | Rated Current 211.5 A | Saturation Current 129.5 A | Saturation Current 229.5 A | DC Resistance 110.5 mΩ | DC Resistance 210.5 mΩ | –Check availability | ||
7448991022 | SPEC2.2 µH, 2.2 µH, 1:1 | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Inductance 12.2 µH | Inductance 22.2 µH | Turns Ratio1:1 | Rated Current8.2 A | Rated Current 28.2 A | Saturation Current 120.6 A | Saturation Current 220.6 A | DC Resistance 114 mΩ | DC Resistance 214 mΩ | –Check availability | ||
7448991027 | SPEC2.7 µH, 2.7 µH, 1:1 | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Inductance 12.7 µH | Inductance 22.7 µH | Turns Ratio1:1 | Rated Current7.4 A | Rated Current 27.4 A | Saturation Current 116.5 A | Saturation Current 216.5 A | DC Resistance 116.3 mΩ | DC Resistance 216.3 mΩ | –Check availability | ||
7448990033 | SPEC3.3 µH, 3.3 µH, 1:1 | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Inductance 13.3 µH | Inductance 23.3 µH | Turns Ratio1:1 | Rated Current7.5 A | Rated Current 27.5 A | Saturation Current 128.2 A | Saturation Current 228.2 A | DC Resistance 123.5 mΩ | DC Resistance 223.5 mΩ | –Check availability | ||
7448991033 | SPEC3.3 µH, 3.3 µH, 1:1 | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Inductance 13.3 µH | Inductance 23.3 µH | Turns Ratio1:1 | Rated Current6.8 A | Rated Current 26.8 A | Saturation Current 114.3 A | Saturation Current 214.3 A | DC Resistance 120.7 mΩ | DC Resistance 220.7 mΩ | –Check availability | ||
7448990047 | SPEC4.7 µH, 4.7 µH, 1:1 | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Inductance 14.7 µH | Inductance 24.7 µH | Turns Ratio1:1 | Rated Current5.9 A | Rated Current 25.9 A | Saturation Current 124.2 A | Saturation Current 224.2 A | DC Resistance 136 mΩ | DC Resistance 236 mΩ | –Check availability | ||
7448991047 | SPEC4.7 µH, 4.7 µH, 1:1 | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Inductance 14.7 µH | Inductance 24.7 µH | Turns Ratio1:1 | Rated Current6.2 A | Rated Current 26.2 A | Saturation Current 113.8 A | Saturation Current 213.8 A | DC Resistance 124.4 mΩ | DC Resistance 224.4 mΩ | –Check availability | ||
7448990068 | SPEC6.8 µH, 6.8 µH, 1:1 | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Inductance 16.8 µH | Inductance 26.8 µH | Turns Ratio1:1 | Rated Current5 A | Rated Current 25 A | Saturation Current 121.2 A | Saturation Current 221.2 A | DC Resistance 146 mΩ | DC Resistance 246 mΩ | –Check availability | ||
7448991068 | SPEC6.8 µH, 6.8 µH, 1:1 | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Inductance 16.8 µH | Inductance 26.8 µH | Turns Ratio1:1 | Rated Current5 A | Rated Current 25 A | Saturation Current 112 A | Saturation Current 212 A | DC Resistance 138 mΩ | DC Resistance 238 mΩ | –Check availability | ||
7448990082 | SPEC8.2 µH, 8.2 µH, 1:1 | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Inductance 18.2 µH | Inductance 28.2 µH | Turns Ratio1:1 | Rated Current4.8 A | Rated Current 24.8 A | Saturation Current 118.5 A | Saturation Current 218.5 A | DC Resistance 156 mΩ | DC Resistance 256 mΩ | –Check availability | ||
7448991082 | SPEC8.2 µH, 8.2 µH, 1:1 | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Inductance 18.2 µH | Inductance 28.2 µH | Turns Ratio1:1 | Rated Current4.7 A | Rated Current 24.7 A | Saturation Current 111.3 A | Saturation Current 211.3 A | DC Resistance 141.2 mΩ | DC Resistance 241.2 mΩ | –Check availability | ||
7448990100 | SPEC10 µH, 10 µH, 1:1 | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Inductance 110 µH | Inductance 210 µH | Turns Ratio1:1 | Rated Current4.5 A | Rated Current 24.5 A | Saturation Current 117 A | Saturation Current 217 A | DC Resistance 162 mΩ | DC Resistance 262 mΩ | –Check availability | ||
7448991100 | SPEC10 µH, 10 µH, 1:1 | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Inductance 110 µH | Inductance 210 µH | Turns Ratio1:1 | Rated Current3.7 A | Rated Current 23.7 A | Saturation Current 19.8 A | Saturation Current 29.8 A | DC Resistance 155 mΩ | DC Resistance 255 mΩ | –Check availability | ||
7448990150 | SPEC15 µH, 15 µH, 1:1 | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Inductance 115 µH | Inductance 215 µH | Turns Ratio1:1 | Rated Current3.9 A | Rated Current 23.9 A | Saturation Current 19.5 A | Saturation Current 29.5 A | DC Resistance 178 mΩ | DC Resistance 278 mΩ | –Check availability | ||
7448991150 | SPEC15 µH, 15 µH, 1:1 | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Inductance 115 µH | Inductance 215 µH | Turns Ratio1:1 | Rated Current3.25 A | Rated Current 23.25 A | Saturation Current 17.8 A | Saturation Current 27.8 A | DC Resistance 183 mΩ | DC Resistance 283 mΩ | –Check availability | ||
7448990220 | SPEC22 µH, 22 µH, 1:1 | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Inductance 122 µH | Inductance 222 µH | Turns Ratio1:1 | Rated Current3.4 A | Rated Current 23.4 A | Saturation Current 18.1 A | Saturation Current 28.1 A | DC Resistance 195 mΩ | DC Resistance 295 mΩ | –Check availability | ||
7448991220 | SPEC22 µH, 22 µH, 1:1 | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Inductance 122 µH | Inductance 222 µH | Turns Ratio1:1 | Rated Current2.2 A | Rated Current 22.2 A | Saturation Current 16.1 A | Saturation Current 26.1 A | DC Resistance 1144 mΩ | DC Resistance 2144 mΩ | –Check availability | ||
7448990330 | SPEC33 µH, 33 µH, 1:1 | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Inductance 133 µH | Inductance 233 µH | Turns Ratio1:1 | Rated Current2.9 A | Rated Current 22.9 A | Saturation Current 16.8 A | Saturation Current 26.8 A | DC Resistance 1130 mΩ | DC Resistance 2130 mΩ | –Check availability | ||
7448991330 | SPEC33 µH, 33 µH, 1:1 | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Inductance 133 µH | Inductance 233 µH | Turns Ratio1:1 | Rated Current2.05 A | Rated Current 22.05 A | Saturation Current 15 A | Saturation Current 25 A | DC Resistance 1207 mΩ | DC Resistance 2207 mΩ | –Check availability | ||
7448990470 | SPEC47 µH, 47 µH, 1:1 | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Inductance 147 µH | Inductance 247 µH | Turns Ratio1:1 | Rated Current2.3 A | Rated Current 22.3 A | Saturation Current 16 A | Saturation Current 26 A | DC Resistance 1216 mΩ | DC Resistance 2216 mΩ | –Check availability | ||
7448991470 | SPEC47 µH, 47 µH, 1:1 | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Inductance 147 µH | Inductance 247 µH | Turns Ratio1:1 | Rated Current1.5 A | Rated Current 21.5 A | Saturation Current 14.4 A | Saturation Current 24.4 A | DC Resistance 1312 mΩ | DC Resistance 2312 mΩ | –Check availability |
| Expected Availability | Opening inventory | Quantity |
|---|---|---|
| Current Availability | – | – |
An Excellent Duet!
Coupled Inductors
The WE-MCRI is an innovative molded coupled inductor with fully automated bifilar winding process. It offers an almost ideal coupling coefficient up to 0.995. The WE-MCRI features a soft saturation behavior with its crystalline core structure and distributed air gap.
The coupled inductor range includes high voltage isolation versions up to 2 kV, low profile types and versions with various turns ratios.

The innovative design in detail

The distributed air gap within the crystalline structure

High coupling coefficient

Soft saturation
Overview of typical applications





Simulate now in REDEXPERT
The online platform for easier component selection
Simulate now in REDEXPERT
The online platform for easier component selection
Important features:
- The world’s most accurate AC loss model Inductor simulation and selection for DC/DC converters
- Ability to compare inductance/current and temperature rise/DC current using interactive measurement curves
- Filter settings for over 20 electrical and mechanical parameters
- Online platform based on measured values
- Order free samples directly
- Direct access to product datasheets

Demo Board
Dual-Output Isolated Buck Converter
Demo Board
Dual-Output Isolated Buck Converter
With the High Voltage Coupled Inductor WE-CPIB HV, an additional isolated output in a buck converter can be achieved, with minimal solution size and design effort.
Demo Module Features:
- USB powered
- Single and Dual-output buck operation
- Output LED indicator

REDEXPERT loss simulation
Find the best inductor!
REDEXPERT loss simulation
Find the best inductor!
REDEXPERT has the world’s most accurate AC loss model, which even includes the DC-bias current. With dedicated DC-DC topologies or the generic loss simulator, you can accurately determine the AC and DC losses for your converter. The model includes the core material, shape and winding structure of the inductor. REDEXPERT recommends suitable inductors and allows you to add more filters to find the best inductor for your application.




