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: HK$45.46
387In Stock

Mfr. Part No.
74942300

Mouser Part No
710-74942300

Wurth Elektronik

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

Learn More

Datasheet

387In Stock

Cut Tape

HK$45.46

HK$39.54

HK$35.84

HK$32.39

HK$32.30

Reel

HK$25.73

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: HK$63.71
754In Stock

Mfr. Part No.
74942400

Mouser Part No
710-74942400

Wurth Elektronik

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

Learn More

Datasheet

754In Stock

Cut Tape

HK$63.71

HK$54.91

HK$48.33

HK$42.42

Reel

HK$40.94

MouseReel Available

Min.: 1
Mult.: 1

: 500

Transformers

SMT Transformer

SMD/SMT

450 uH

- 40 C

+ 125 C

1 Channel

Energy Storage Systems

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: HK$63.71
668In Stock

Mfr. Part No.
74942401

Mouser Part No
710-74942401

Wurth Elektronik

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

Learn More

Datasheet

668In Stock

Cut Tape

HK$63.71

HK$54.91

HK$48.33

HK$42.42

Reel

HK$40.94

MouseReel Available

Min.: 1
Mult.: 1

: 500

Transformers

SMT Transformer

SMD/SMT

450 uH

- 40 C

+ 125 C

1 Channel

Energy Storage systems

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: HK$51.13
1,623In Stock
900Expected 21/8/2026

Mfr. Part No.
74942402

Mouser Part No
710-74942402

Wurth Elektronik

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

Learn More

Datasheet

1,623In Stock

900Expected 21/8/2026

Cut Tape

HK$51.13

HK$45.21

HK$40.44

HK$36.09

Reel

HK$31.73

MouseReel Available

Min.: 1
Mult.: 1

: 300

Transformers

SMT Transformer

SMD/SMT

450 uH

- 40 C

+ 125 C

1 Channel

Battery Management

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: HK$29.59
721In Stock

Mfr. Part No.
74941300

Mouser Part No
710-74941300

Wurth Elektronik

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

Learn More

Datasheet

721In Stock

Cut Tape

HK$29.59

HK$25.65

HK$23.26

HK$20.96

HK$20.88

Reel

HK$16.52

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: HK$29.59
650In Stock

Mfr. Part No.
74941301

Mouser Part No
710-74941301

Wurth Elektronik

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

Learn More

Datasheet

650In Stock

Cut Tape

HK$29.59

HK$25.65

HK$23.26

HK$20.96

Reel

HK$16.03

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: HK$29.59
517In Stock
850Expected 21/8/2026

Mfr. Part No.
74941302

Mouser Part No
710-74941302

Wurth Elektronik

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

Learn More

Datasheet

517In Stock

850Expected 21/8/2026

Cut Tape

HK$29.59

HK$25.65

HK$23.26

HK$20.88

Reel

HK$18.41

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: HK$45.46
191In Stock

Mfr. Part No.
74942302

Mouser Part No
710-74942302

Wurth Elektronik

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

Learn More

Datasheet

191In Stock

Cut Tape

HK$45.46

HK$39.54

HK$35.84

HK$32.30

Reel

HK$25.24

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: HK$30.99
Non-Stocked Lead-Time 18 Weeks

Mfr. Part No.
74942301

Mouser Part No
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

HK$30.99

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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