Audio Transformers / Signal Transformers

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Transformers for Battery Management Systems

Würth Elektronik WE-BMS Transformers are designed to fulfill the requirements in high voltage operation areas for a safe and reliable battery management system (BMS). These transformers feature a common-mode choke to filter noise and electrically isolate the signals, allowing them to support the BMS isolation and EMI noise suppression for a safe and reliable operation. WE-BMS transformers feature a low-profile design and a higher creepage distance that increases the safety and reliability of the system despite the footprint. Würth Elektronik WE-BMS transformers are suitable for solar energy storage, energy storage systems (ESS), and uninterrupted power supplies (UPS).

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Part #

Audio Transformers / Signal Transformers WE-BMS SMT Transfomr 2Ch -40C/+125CAEC-Q200

74942300
Wurth Elektronik
1: $7.96
387In Stock

Mfr. Part #
74942300

Mouser Part #
710-74942300

Wurth Elektronik

Audio Transformers / Signal Transformers WE-BMS SMT Transfomr 2Ch -40C/+125CAEC-Q200

Learn More

Datasheet

387In Stock

Cut Tape

$7.96

$6.93

$6.28

$5.67

$5.66

Reel

$4.51

MouseReel Available

Min.: 1
Mult.: 1

: 450

SMT transformer

SMD/SMT

450 uH

- 40 C

+ 125 C

1 Channel

15.1 mm

14.2 mm

4.75 mm

WE-BMS

AEC-Q200

Reel, Cut Tape, MouseReel

Audio Transformers / Signal Transformers WE-BMS BMS 2 channels 1500V -40/ +125C

74942400
Wurth Elektronik
1: $11.16
754In Stock

Mfr. Part #
74942400

Mouser Part #
710-74942400

Wurth Elektronik

Audio Transformers / Signal Transformers WE-BMS BMS 2 channels 1500V -40/ +125C

Learn More

Datasheet

754In Stock

Cut Tape

$11.16

$9.62

$8.64

$7.83

Reel

$7.42

$7.26

MouseReel Available

Min.: 1
Mult.: 1

: 500

Transformers

SMT Transformer

SMD/SMT

450 uH

- 40 C

+ 125 C

1 Channel

24.52 mm

15.45 mm

4.85 mm

WE-BMS

Reel, Cut Tape, MouseReel

Audio Transformers / Signal Transformers WE-BMS BMS 450uH 2Channel 1500V -40/ +125C

74942401
Wurth Elektronik
1: $11.16
669In Stock

Mfr. Part #
74942401

Mouser Part #
710-74942401

Wurth Elektronik

Audio Transformers / Signal Transformers WE-BMS BMS 450uH 2Channel 1500V -40/ +125C

Learn More

Datasheet

669In Stock

Cut Tape

$11.16

$9.62

$8.47

$7.55

Reel

$7.42

$7.20

MouseReel Available

Min.: 1
Mult.: 1

: 500

Transformers

SMT Transformer

SMD/SMT

450 uH

- 40 C

+ 125 C

1 Channel

24.52 mm

15.45 mm

4.85 mm

WE-BMS

Reel, Cut Tape, MouseReel

Audio Transformers / Signal Transformers WE-BMS BMS 1 channel 1500V -40 / +125C

74942402
Wurth Elektronik
1: $8.96
1,121In Stock
3,000On Order

Mfr. Part #
74942402

Mouser Part #
710-74942402

Wurth Elektronik

Audio Transformers / Signal Transformers WE-BMS BMS 1 channel 1500V -40 / +125C

Learn More

Datasheet

1,121In Stock

3,000On Order

Cut Tape

$8.96

$7.92

$7.08

$6.32

Reel

$5.56

MouseReel Available

Min.: 1
Mult.: 1

: 300

Transformers

SMT Transformer

SMD/SMT

450 uH

- 40 C

+ 125 C

1 Channel

24 mm

12.5 mm

7.3 mm

WE-BMS

Reel, Cut Tape, MouseReel

Audio Transformers / Signal Transformers WE-BMS SMT Transfomr 1Ch -40C/+125C AEC-Q200

74941300
Wurth Elektronik
1: $5.20
716In Stock
650Expected 2026-09-18

Mfr. Part #
74941300

Mouser Part #
710-74941300

Wurth Elektronik

Audio Transformers / Signal Transformers WE-BMS SMT Transfomr 1Ch -40C/+125C AEC-Q200

Learn More

Datasheet

716In Stock

650Expected 2026-09-18

Cut Tape

$5.20

$4.51

$4.09

$3.67

Reel

$3.23

MouseReel Available

Min.: 1
Mult.: 1

: 650

SMT transformer

SMD/SMT

450 uH

- 40 C

+ 125 C

1 Channel

8.9 mm

7.6 mm

5.5 mm

WE-BMS

AEC-Q200

Reel, Cut Tape, MouseReel

Audio Transformers / Signal Transformers WE-BMS SMT Transfomr 1Ch -40C/+125C AEC-Q200

74941301
Wurth Elektronik
1: $5.20
595In Stock
650Expected 2026-12-14

Mfr. Part #
74941301

Mouser Part #
710-74941301

Wurth Elektronik

Audio Transformers / Signal Transformers WE-BMS SMT Transfomr 1Ch -40C/+125C AEC-Q200

Learn More

Datasheet

595In Stock

650Expected 2026-12-14

Cut Tape

$5.20

$4.51

$4.09

$3.67

Reel

$3.23

MouseReel Available

Min.: 1
Mult.: 1

: 650

SMT transformer

SMD/SMT

450 uH

- 40 C

+ 125 C

1 Channel

8.9 mm

7.6 mm

5.5 mm

WE-BMS

AEC-Q200

Reel, Cut Tape, MouseReel

Audio Transformers / Signal Transformers WE-BMS SMT Transfomr 1Ch -40C/+125C AEC-Q200

74941302
Wurth Elektronik
1: $5.20
517In Stock
850On Order

Mfr. Part #
74941302

Mouser Part #
710-74941302

Wurth Elektronik

Audio Transformers / Signal Transformers WE-BMS SMT Transfomr 1Ch -40C/+125C AEC-Q200

Learn More

Datasheet

517In Stock

850On Order

Cut Tape

$5.20

$4.59

$4.16

$4.09

$3.74

Reel

$3.25

MouseReel Available

Min.: 1
Mult.: 1

: 850

SMT transformer

SMD/SMT

450 uH

- 40 C

+ 125 C

1 Channel

14.3 mm

9.5 mm

3.45 mm

WE-BMS

AEC-Q200

Reel, Cut Tape, MouseReel

Audio Transformers / Signal Transformers WE-BMS SMT Transfomr 2Ch -40C/+125CAEC-Q200

74942302
Wurth Elektronik
1: $7.98
191In Stock

Mfr. Part #
74942302

Mouser Part #
710-74942302

Wurth Elektronik

Audio Transformers / Signal Transformers WE-BMS SMT Transfomr 2Ch -40C/+125CAEC-Q200

Learn More

Datasheet

191In Stock

Cut Tape

$7.98

$6.93

$6.29

Reel

$5.05

MouseReel Available

Min.: 1
Mult.: 1

: 550

SMT transformer

SMD/SMT

450 uH

- 40 C

+ 125 C

1 Channel

15.1 mm

14.7 mm

4.75 mm

WE-BMS

AEC-Q200

Reel, Cut Tape, MouseReel

Audio Transformers / Signal Transformers WE-BMS SMT Transfomr 2Ch -40C/+125CAEC-Q200

74942301
Wurth Elektronik
550: $5.50
Non-Stocked Lead-Time 18 Weeks

Mfr. Part #
74942301

Mouser Part #
710-74942301

Wurth Elektronik

Audio Transformers / Signal Transformers WE-BMS SMT Transfomr 2Ch -40C/+125CAEC-Q200

Learn More

Datasheet

Non-Stocked Lead-Time 18 Weeks

Reel

$5.50

Min.: 550
Mult.: 550

: 550

SMT transformer

SMD/SMT

450 uH

- 40 C

+ 125 C

1 Channel

15.1 mm

14.2 mm

3.45 mm

WE-BMS

AEC-Q200

Reel

Transformers for Battery Management Systems

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