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. 170-7440
Mfr. Part No.VB 2.3/2/9
BrandBlock
$7.125
Each (In a Tray of 91)
units
9V ac 2.3VA 230V ac 2 32.3mm 29mm 27.3mm 32.3 x 29 x 27.3mm 139g Through Hole - - +70°C -
RS Stock No. 347-3467
Mfr. Part No.VB 2.3/2/9
BrandBlock
$12.12
Each
units
9V ac 2.3VA 230V ac 2 32.3mm 29mm 27.3mm 32.3 x 29 x 27.3mm 139g Through Hole - - +70°C -
RS Stock No. 173-9737
Mfr. Part No.44129
BrandMyrra
$5.67
Each
units
2 x 12V ac 2VA 230V ac 2 32.6mm 27.6mm 27.3mm 32.6 x 27.6 x 27.3mm 100g Through Hole - - +70°C 50Hz
RS Stock No. 170-7441
Mfr. Part No.VB 2.3/2/12
BrandBlock
$7.125
Each (In a Tray of 91)
units
12V ac 2.3VA 230V ac 2 32.3mm 29mm 27.3mm 32.3 x 29 x 27.3mm 139g Through Hole - - +70°C -
RS Stock No. 347-3473
Mfr. Part No.VB 2.3/2/12
BrandBlock
$14.35
Each
units
12V ac 2.3VA 230V ac 2 32.3mm 29mm 27.3mm 32.3 x 29 x 27.3mm 139g Through Hole - - +70°C -
RS Stock No. 504-511
BrandRS PRO
$10.22
Each
units
20V ac 12VA 230V ac 2 54mm 45mm 41mm 54 x 45 x 41mm 400g Through Hole - - - 50Hz
RS Stock No. 869-5022
Mfr. Part No.47206
BrandMyrra
$16.22
Each
units
3.3V dc 7.5W 85 → 265 V ac, 120 → 370 V dc 1 - - - - - Through Hole -25°C - +70°C 47Hz
RS Stock No. 732-0389
Mfr. Part No.VB 2,8/1/12
BrandBlock
$12.42
Each
units
12V ac 2.8VA 230V ac 1 32.3mm 27.3mm 34mm 32.3 x 27.3 x 34mm 140g Through Hole - - +70°C 50Hz
RS Stock No. 732-0342
Mfr. Part No.VB 1,5/1/9
BrandBlock
$7.74
Each
units
9V ac 1.5VA 230V ac 1 32.3mm 27.3mm 23.8mm 32.3 x 27.3 x 23.8mm 80g Through Hole - - +70°C 50Hz
RS Stock No. 869-5044
Mfr. Part No.47205
BrandMyrra
$20.63
Each
units
24V dc 7.5W 85 → 265 V ac, 120 → 370 V dc 1 - - - - - Through Hole -25°C - +70°C 47Hz
RS Stock No. 121-3844
BrandRS PRO
$13.20
Each
units
2 x 15V ac 7.5VA 230V ac 2 51mm 43mm 35mm 51 x 43 x 35mm 295g PCB Mount - - +130°C 50Hz
RS Stock No. 732-0370
Mfr. Part No.VB 2,8/1/9
BrandBlock
$22.17
Each
units
9V ac 2.8VA 230V ac 1 32.3mm 27.3mm 34mm 32.3 x 27.3 x 34mm 140g Through Hole - - +70°C 50Hz
RS Stock No. 732-0339
Mfr. Part No.VB 1,2/1/12
BrandBlock
$6.84
Each
units
12V ac 1.2VA 230V ac 1 32.3mm 27.3mm 23.8mm 32.3 x 27.3 x 23.8mm 80g Through Hole - - +70°C 50Hz
RS Stock No. 504-549
BrandRS PRO
$8.19
Each
units
9V ac 6VA 230V ac 2 43mm 36mm 33mm 43 x 36 x 33mm 180g Through Hole - - - 50Hz
RS Stock No. 347-3546
Mfr. Part No.VB 3.2/2/15
BrandBlock
$6.51
Each
units
15V ac 3.2VA 230V ac 2 41mm 30.8mm 35mm 41 x 30.8 x 35mm 173g Through Hole - - +70°C -
RS Stock No. 161-7801
Mfr. Part No.VB 3.2/2/15
BrandBlock
$4.30
Each (In a Tray of 50)
units
15V ac 3.2VA 230V ac 2 41mm 30.8mm 35mm 41 x 30.8 x 35mm 173g Through Hole - - +70°C -
RS Stock No. 869-5025
Mfr. Part No.47200
BrandMyrra
$18.84
Each
units
5V dc 7.5W 85 → 265 V ac, 120 → 370 V dc 1 - - - - - Through Hole -25°C - +70°C 47Hz
RS Stock No. 173-9591
Mfr. Part No.44056
BrandMyrra
$5.26
Each
units
9V ac 1VA 230V ac 2 32.6mm 27.6mm 22.2mm 32.6 x 27.6 x 22.2mm 70g Through Hole - - +70°C 50Hz
RS Stock No. 161-7798
Mfr. Part No.VC 5/2/24
BrandBlock
$5.47
Each (In a Tray of 48)
units
24V ac 5VA 230V ac 2 44mm 33mm 37mm 44 x 33 x 37mm 190g Through Hole - 68% +50°C -
RS Stock No. 121-3841
BrandRS PRO
$13.44
Each
units
2 x 12V ac 6VA 115 → 230V ac 2 53mm 44mm 23mm 53 x 44 x 23mm 185g PCB Mount - - +130°C 50Hz
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