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. 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. 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. 182-8951
Mfr. Part No.750316028
£3.304
Each (On a Tape of 5)
Units
3.3V - 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. 182-8932
Mfr. Part No.750313638
£3.67
Each
Units
3.3V - 5V dc 1 8mm 7.62mm 9.14mm 8 x 7.62 x 9.14mm - Surface Mount -40°C - +125°C 250kHz
RS Stock No. 182-8948
Mfr. Part No.750342779
£5.23
1 Tape of 1
Tape(s)
7V - 36V dc 1 9.5mm 10.54mm 9.78mm 9.5 x 10.54 x 9.78mm - Surface Mount -40°C - +125°C -
RS Stock No. 182-8763
Mfr. Part No.750315371
£1.532
Each (On a Reel of 900)
Units
5V - 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. 183-8320
Mfr. Part No.48027
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 74% +80°C 47Hz
New
RS Stock No. 186-5534
Mfr. Part No.MTPL-2516-S24V
BrandVishay
£19.76
Each
Units
- 150 → 300W 24V 1 30mm 26mm 17mm 30 x 26 x 17mm - Through Hole -55°C - +130°C 100kHz
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. 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. 182-8740
Mfr. Part No.750342860
£3.55
Each (On a Reel of 250)
Units
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. 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. 182-8974
Mfr. Part No.750342879
£4.04
Each
Units
17V - 5V dc 1 8mm 7.62mm 9.14mm 8 x 7.62 x 9.14mm - Surface Mount -40°C - +125°C -
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. 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. 183-8322
Mfr. Part No.47210
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 74% +60°C 47Hz
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. 183-8328
Mfr. Part No.47215
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. 182-8743
Mfr. Part No.750342878
£3.537
Each (On a Reel of 300)
Units
7V - 36V dc 1 9.5mm 10.54mm 9.78mm 9.5 x 10.54 x 9.78mm - Surface Mount -40°C - +125°C -
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 -
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