Battery Management System

Bourns Battery Management Systems (BMS) manage the state of health (SoC) while charging and discharging battery systems. BMS components feature shunt resistors, high-voltage signals, power transformers, and shielded power inductors. Current sense resistors are AEC-Q200 qualified with a continuous current of 1000A and a low 50µΩ resistance. Bourns signal transformers include common-mode chokes for noise rejection for BMS applications. The shielded power inductors and high creepage high clearance (HCT) transformers are suitable for automotive power conversion, DC-DC converters, power supplies, and communication electronics.

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Description Datasheet Availability Pricing (USD) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model Product
Primary Voltage Rating
Secondary Voltage Rating
Power Rating
Secondary Current Rating
Mounting Style
Primary Winding
Secondary Winding
Length
Width
Height
Series
Bourns Power Transformers - Board Mount Push-Pull Func-Insultn 3.3V 1:2 1W
Datasheet
6,285In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 800

Isolation Transformers 1 W PCB Mount 7.1 mm 6.55 mm 4 mm
Bourns Power Transformers - Board Mount Push-Pull Func-Insultn 3.3V 1:1.7 1W
Datasheet
5,227In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 800

Isolation Transformers 1 W PCB Mount 7.1 mm 6.55 mm 4 mm
Bourns Power Transformers - Board Mount 6.4 VDC
Datasheet
1,090In Stock
2,400Expected 12/8/2026
MouseReel Available
Min.: 1
Mult.: 1
: 600

BMS Transformers SMD/SMT Single Primary Winding Single Secondary Winding 28 mm 12.5 mm 8.5 mm
Bourns Power Transformers - Board Mount BMS xformer 1-Ch 1000V AECQ +125 C
Datasheet
14,303In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 4,000

BMS Transformers PCB Mount Single Primary Winding Single Secondary Winding 7.62 mm 6.73 mm 5.72 mm SM91502ALE
Bourns Power Transformers - Board Mount BMS Transformer/CMC, 12PIN, DUAL, 4.3k VDC
Datasheet
1,639In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,000

BMS Transformers PCB Mount Single Primary Winding Single Secondary Winding 14.81 mm 11.68 mm 4.87 mm SM91501ALO
Bourns Power Transformers - Board Mount CMC,6PIN,SGL,4.3KVDC AEC-Q200
Datasheet
3,524In Stock
8,000Expected 11/12/2026
MouseReel Available
Min.: 1
Mult.: 1
: 4,000

BMS Transformers PCB Mount Single Primary Winding Single Secondary Winding 7.62 mm 6.73 mm 5.72 mm SM91514AL
Bourns Power Transformers - Board Mount Transformer, Flyback, 17x11x6mm, 25uH
Datasheet
214In Stock
Min.: 1
Mult.: 1
: 2,750

Flyback Transformers 7 V to 24 V 15 V 2.25 W 150 mA PCB Mount Dual Primary Winding Dual Secondary Winding 13.6 mm 10.5 mm 5.97 mm BA60951CS
Bourns Power Transformers - Board Mount Push-Pull Func-Insultn 5V 1:1.3 1.5W
Datasheet
2,514In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 800

Isolation Transformers 2 W PCB Mount 7.1 mm 6.55 mm 4 mm
Bourns Power Transformers - Board Mount BMS Transformer/CMC, 6PIN, SGL, 4.3k VDC AEC-Q200
Datasheet
8,813In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 4,000

BMS Transformers PCB Mount Single Primary Winding Single Secondary Winding 7.62 mm 6.73 mm 5.59 mm SM91501ALA
Bourns Power Transformers - Board Mount Push-Pull Func-Insultn 5V 1:1.1 1.5W
Datasheet
986In Stock
6,400Expected 1/26/2027
MouseReel Available
Min.: 1
Mult.: 1
: 800

Isolation Transformers 2 W PCB Mount 7.1 mm 6.55 mm 4 mm