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. 180-2382
Mfr. Part No.SM91502ALE
BrandBourns
£1.697
Each (On a Reel of 800)
Units
- - 1000V dc - 7.62mm 6.73mm 5.59mm 7.62 x 6.73 x 5.59mm - Surface Mount -40°C - +125°C -
RS Stock No. 186-5340
Mfr. Part No.MTPL-2516-S12V
BrandVishay
£12.84
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. 182-8750
Mfr. Part No.760390015
£1.246
Each (On a Reel of 1200)
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. 182-8747
Mfr. Part No.760390012
£1.246
Each (On a Reel of 1200)
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. 183-8314
Mfr. Part No.48022
BrandMyrra
£5.20
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 67% +80°C 47Hz
RS Stock No. 182-8744
Mfr. Part No.750342859
£3.55
Each (On a Reel of 250)
Units
15V - 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. 182-8741
Mfr. Part No.750342864
£3.573
Each (On a Reel of 200)
Units
7.5V - 36V dc 1 17.75mm 12.7mm 13.46mm 17.75 x 12.7 x 13.46mm - Surface Mount -40°C - +125°C -
RS Stock No. 106-6275
Mfr. Part No.PT 30/2/9
BrandBlock
£20.58
Each
Units
9V ac 30VA 230V ac 2 64mm 55mm 54mm 64 x 55 x 54mm - Through Hole - - +40°C -
RS Stock No. 182-8963
Mfr. Part No.750316030
£3.326
Each (On a Tape of 5)
Units
3.3V - 5.5V dc 1 9.25mm 4.1mm 8.3mm 9.25 x 4.1 x 8.3mm - Surface Mount -40°C - +125°C -
RS Stock No. 182-8960
Mfr. Part No.760390012
£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. 182-8957
Mfr. Part No.750316029
£3.35
Each (On a Tape of 5)
Units
5V - 3.3V dc 1 9.25mm 4.1mm 8.3mm 9.25 x 4.1 x 8.3mm - Surface Mount -40°C - +125°C -
RS Stock No. 182-8754
Mfr. Part No.750313626
£2.018
Each (On a Reel of 500)
Units
5V - 3.3V dc 1 8mm 7.62mm 9.14mm 8 x 7.62 x 9.14mm - Surface Mount -40°C - +125°C 250kHz
RS Stock No. 179-7867
Mfr. Part No.SM13100EL
BrandBourns
£1.656
Each (On a Reel of 160)
Units
- - - 1 24.15mm 15.5mm 12.8mm 24.15 x 15.5 x 12.8mm - Surface Mount -40°C - +85°C 30MHz
RS Stock No. 183-8321
Mfr. Part No.47216
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 84% +50°C 47Hz
RS Stock No. 182-8939
Mfr. Part No.750313769
£3.67
Each
Units
5V - 3.3V dc 1 8mm 7.62mm 9.14mm 8 x 7.62 x 9.14mm - Surface Mount -40°C - +125°C 250kHz
RS Stock No. 182-8756
Mfr. Part No.750316029
£2.452
Each (On a Reel of 900)
Units
5V - 3.3V dc 1 9.25mm 4.1mm 8.3mm 9.25 x 4.1 x 8.3mm - Surface Mount -40°C - +125°C -
RS Stock No. 186-5341
Mfr. Part No.MTPL-2516-S15V
BrandVishay
£12.84
Each (In a Tray of 25)
Units
- 150 → 300W 15V 1 30mm 26mm 17mm 30 x 26 x 17mm - Through Hole -55°C - +130°C 100kHz
RS Stock No. 170-7398
Mfr. Part No.PT 7.5/2/8
BrandBlock
£5.136
Each (In a Tray of 35)
Units
8V ac 7.5VA 230V ac 2 51mm 36mm 43mm 51 x 36 x 43mm 280g Through Hole - - +40°C -
RS Stock No. 732-0314
Mfr. Part No.VB 1,0/1/15
BrandBlock
£2.71
Each
Units
15V ac 1VA 230V ac 1 32.3mm 27.3mm 21.8mm 32.3 x 27.3 x 21.8mm 70g Through Hole - - +70°C 50Hz
RS Stock No. 180-9200
Mfr. Part No.PLT-02
BrandKEMET
£2.264
Each (In a Box of 90)
Units
- - 110 V ac, 3600 V ac - 9.5mm 11.5mm 12mm 9.5 x 11.5 x 12mm 1.3g Through Hole -25°C - +100°C -
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