PCB Transformers

Transformers function as current regulators to reduce or increase the voltage of alternating currents in a variety of machinery. PCB (printed circuit board) transformers are designed to work with printed circuit boards, which offer a compact and convenient way to connect electric components.

The PCB transformer sits above the surface of the board, where it controls the voltage or current transitioning through the board.

What are PCB transformers used for?
PCB transformers are used mainly in manufacturing processes where current regulation is needed. They're also used in computer hardware applications and consumer devices to protect them from power surges.

Types of PCB transformers
PCB transformers can be recognised by their mounting capabilities. They are surface mounted or through-hole mounted.
Through-hole mounted transformers have connectors or pins that can pierce through the board. They are generally used in multilayered printed circuit boards. Surface mounted transformers do not penetrate into the board itself and are therefore very compact, which makes them a popular choice for many applications.

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Description Price Secondary Voltage Rating Power Rating Primary Voltage Rating Number of Outputs Length Width Depth Dimensions Weight Mounting Type Minimum Temperature Efficiency Maximum Temperature Minimum Operating Frequency
RS Stock No. 161-7792
Mfr. Part No.PT 7.5/2/12
BrandBlock
£8.428
Each (In a Tray of 35)
Units
12V ac 7.5VA 230V ac 2 51mm 36mm 43mm 51 x 36 x 43mm 280g Through Hole - - +40°C -
RS Stock No. 173-4603
Mfr. Part No.44441
BrandMyrra
£8.61
Each
Units
15V ac 22VA 230V ac 2 63.5mm 53.5mm 45.5mm 63.5 x 53.5 x 45.5mm 550g Through Hole - - +50°C 50Hz
RS Stock No. 173-8958
Mfr. Part No.45023
BrandMyrra
£8.26
Each
Units
18V ac 4VA 230V ac 2 53mm 44mm 19mm 53 x 44 x 19mm 150g Through Hole - - +70°C 50Hz
RS Stock No. 170-7399
Mfr. Part No.PT 7.5/2/9
BrandBlock
£7.546
Each (In a Tray of 35)
Units
9V ac 7.5VA 230V ac 2 51mm 36mm 43mm 51 x 36 x 43mm 280g Through Hole - - +40°C -
RS Stock No. 180-9291
Mfr. Part No.PLT-01
BrandKEMET
£4.06
Each
Units
- - 264 V ac, 3600 V ac - 13.5mm 12.3mm 12.5mm 13.5 x 12.3 x 12.5mm 1.8g Through Hole -25°C - +100°C -
RS Stock No. 183-8316
Mfr. Part No.48024
BrandMyrra
£4.56
Each
Units
120 → 370 V dc, 85 → 265 V ac 1 → 3W 100 → 240 V ac, 140 → 340 V dc 1 25mm 25mm 16mm 25 x 25 x 16mm 16g PCB Mount -25°C 72% +80°C 47Hz
RS Stock No. 180-2385
Mfr. Part No.SM91501ALE
BrandBourns
£3.47
Each
Units
- - 1600V dc - 14.81mm 11.68mm 4.87mm 14.81 x 11.68 x 4.87mm - Surface Mount -40°C - +125°C -
RS Stock No. 186-5530
Mfr. Part No.MTPL-2516-S12V
BrandVishay
£19.76
Each
Units
- 150 → 300W 12V 1 30mm 26mm 17mm 30 x 26 x 17mm - Through Hole -55°C - +130°C 100kHz
RS Stock No. 201-8542
Mfr. Part No.PT 7.5/2/9
BrandBlock
£9.21
Each
Units
9V ac 7.5VA 230V ac 2 51mm 36mm 43mm 51 x 36 x 43mm 280g Through Hole - - +40°C -
RS Stock No. 183-8325
Mfr. Part No.47212
BrandMyrra
£11.19
Each
Units
120 → 370 V dc, 85 → 265 V ac 10W 100 → 240 V ac, 140 → 340 V dc 1 48mm 40mm 26mm 48 x 40 x 26mm 80.2g PCB Mount -25°C 82% +60°C 47Hz
RS Stock No. 732-0540
Mfr. Part No.VC 5,0/1/6
BrandBlock
£4.50
Each
Units
6V ac 5VA 230V ac 1 44mm 37mm 33mm 44 x 37 x 33mm 190g Through Hole - - +50°C 50Hz
RS Stock No. 182-8970
Mfr. Part No.760390013
£1.698
Each (On a Tape of 5)
Units
5V - 3.3V dc 1 7.14mm 4.19mm 6.73mm 7.14 x 4.19 x 6.73mm - Surface Mount -40°C - +125°C 250kHz
RS Stock No. 182-8980
Mfr. Part No.760390014
£1.698
Each (On a Tape of 5)
Units
5V - 5V dc 1 7.14mm 4.19mm 6.73mm 7.14 x 4.19 x 6.73mm - Surface Mount -40°C - +125°C 300kHz
RS Stock No. 183-8318
Mfr. Part No.48025
BrandMyrra
£4.56
Each
Units
120 → 370 V dc, 85 → 265 V ac 1 → 3W 100 → 240 V ac, 140 → 340 V dc 1 25mm 25mm 16mm 25 x 25 x 16mm 16g PCB Mount -25°C 72% +80°C 47Hz
RS Stock No. 182-8986
Mfr. Part No.760390015
£1.698
Each (On a Tape of 5)
Units
5V - 3.3V dc 1 7.14mm 4.19mm 6.73mm 7.14 x 4.19 x 6.73mm - Surface Mount -40°C - +125°C 250kHz
RS Stock No. 182-8923
Mfr. Part No.750342860
£5.12
1 Tape of 1
Tape(s)
24V - 36V dc 1 15.24mm 11.43mm 13.34mm 15.24 x 11.43 x 13.34mm - Surface Mount -40°C - +125°C -
RS Stock No. 186-5340
Mfr. Part No.MTPL-2516-S12V
BrandVishay
£12.583
Each (In a Tray of 25)
Units
- 150 → 300W 12V 1 30mm 26mm 17mm 30 x 26 x 17mm - Through Hole -55°C - +130°C 100kHz
RS Stock No. 182-8954
Mfr. Part No.750342557
£5.16
1 Tape of 1
Tape(s)
15V - 32V dc 1 15.24mm 11.43mm 13.34mm 15.24 x 11.43 x 13.34mm - Surface Mount -40°C - +125°C -
RS Stock No. 180-2381
Mfr. Part No.SM91501ALE
BrandBourns
£1.872
Each (On a Reel of 400)
Units
- - 1600V dc - 14.81mm 11.68mm 4.87mm 14.81 x 11.68 x 4.87mm - Surface Mount -40°C - +125°C -
RS Stock No. 186-5532
Mfr. Part No.MTPL-2516-S15V
BrandVishay
£19.76
Each
Units
- 150 → 300W 15V 1 30mm 26mm 17mm 30 x 26 x 17mm - Through Hole -55°C - +130°C 100kHz
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