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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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Stock information currently inaccessible Block 8 V ac 2 Output Through Hole PCB Transformer, UL, VDE 30 VA RS Stock No. 201-7397 Mfr. Part No. FL 30/8 Subtotal (1 unit) CHF.42.13(exc. VAT) CHF.42.13/unit Units	Block	PCB Transformer	8 V ac	-	-	230V ac, 115 V	-	2	68mm	35.8 mm	57mm	30VA	-	530g	Through Hole	-	-	-	-	-	-	Dual Primary, Dual Secondary	81%	40°C	-	50Hz	-	60Hz	-	UL, VDE
Stock information currently inaccessible Block 18 V ac 2 Output Through Hole PCB Transformer, VDE, UL 4 VA RS Stock No. 201-6978 Mfr. Part No. FL 4/18 Subtotal (1 unit) CHF.14.76(exc. VAT) CHF.14.76/unit Units	Block	PCB Transformer	18 V ac	-	-	115 V, 230 V ac	-	2	53mm	19.6 mm	44mm	4VA	-	145g	Through Hole	-	-	40°C	-	-	-	Dual Primary, Dual Secondary	66%	40°C	-	50Hz	-	60Hz	-	VDE, UL
Stock information currently inaccessible Block 24V ac 2 Output Through Hole PCB Transformer, 42VA RS Stock No. 201-7527 Mfr. Part No. FL 42/24 Subtotal (1 unit) CHF.17.63(exc. VAT) CHF.17.63/unit Units	Block	-	-	24V ac	42VA	-	115V ac, 230V ac	2	83.5mm	39mm	70mm	-	83.5 x 39 x 70mm	715g	-	Through Hole	-	-	-	-	-	-	-	-	+40°C	50Hz	-	60Hz	-	-
Stock information currently inaccessible Era Elektrotechnik 12V ac 2 Output Through Hole PCB Transformer, 14VA RS Stock No. 207-5911 Mfr. Part No. 039-5101.0 Subtotal (1 unit) CHF.10.04(exc. VAT) CHF.10.04/unit Units	Era Elektrotechnik	-	-	12V ac	14VA	-	115V ac, 230V ac	2	57mm	24mm	68mm	-	57 x 24 x 68mm	-	-	Through Hole	-	-	-	-	-	-	-	-	-	-	-	-	-	-
Stock information currently inaccessible Block 9 V ac 2 Output Pin PCB Transformer, VDE 0570 Teil 2-6, IEC 61558-2-6, IEC 61558-2-4, C-UL-US, UL 94 V-0, DIN EN RS Stock No. 201-6940 Mfr. Part No. FL 4/9 Subtotal (1 unit) CHF.9.07(exc. VAT) CHF.9.07/unit Units	Block	PCB Transformer	9 V ac	-	-	115 V ac, 230 V ac	-	2	53mm	19.6 mm	44mm	-	-	0.98kg	Pin	-	5000V	-	-	-	-	Dual Secondary	-	40°C	-	50Hz	FL	60Hz	-	VDE 0570 Teil 2-6, IEC 61558-2-6, IEC 61558-2-4, C-UL-US, UL 94 V-0, DIN EN 61558-2-1, ENEC 10 (VDE), DIN EN 61558-2-4, DIN EN 61558-2-6, IEC 61558-2-1, VDE 0570 Teil 2-4, VDE 0570 Teil 2-1
Stock information currently inaccessible Era Elektrotechnik 18V ac 2 Output Through Hole PCB Transformer, 14VA RS Stock No. 207-5933 Mfr. Part No. 039-5107.0 Subtotal (1 unit) CHF.10.04(exc. VAT) CHF.10.04/unit Units	Era Elektrotechnik	-	-	18V ac	14VA	-	115V ac, 230V ac	2	57mm	24mm	68mm	-	57 x 24 x 68mm	-	-	Through Hole	-	-	-	-	-	-	-	-	-	-	-	-	-	-
Stock information currently inaccessible Transformer,encapsulated,5VA p RS Stock No. 201-5228 Mfr. Part No. VRLG5-2X8 Subtotal (1 unit) CHF.6.01(exc. VAT) CHF.6.01/unit Units	Block	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
Stock information currently inaccessible RS PRO 2 x 12 V ac 2 Output PCB PCB Transformer, ASNZS 61558.1, RoHS, IECBSEN 615581, IECBSEN 615586, CE, ASNZS 61558..6 RS Stock No. 121-3850 Subtotal (1 unit) CHF.30.21(exc. VAT) CHF.30.21/unit Units		PCB Transformer	2 x 12 V ac	-	-	230 V ac, 115 V	-	2	68mm	57 mm	27mm	30VA	-	0.53kg	PCB	-	3.75kVrms	-	-	10	1666.6mA	Independent Secondary, Dual Primary	-	130°C	-	50Hz	-	60Hz	-	ASNZS 61558.1, RoHS, IECBSEN 615581, IECBSEN 615586, CE, ASNZS 61558..6
Stock information currently inaccessible RS PRO 2 x 12V ac 2 Output PCB Mount PCB Transformer, 10VA RS Stock No. 121-3848 Subtotal (1 unit) CHF.10.84(exc. VAT) CHF.10.84/unit Units		-	-	2 x 12V ac	10VA	-	230V ac	2	51mm	43mm	35mm	-	51 x 43 x 35mm	300g	-	PCB Mount	-	-	-	-	-	-	-	-	+130°C	50Hz	-	60Hz	-	-
Stock information currently inaccessible RS PRO 2 x 15V ac 2 Output PCB Mount PCB Transformer, 42VA RS Stock No. 121-3859 Subtotal (1 unit) CHF.16.50(exc. VAT) CHF.16.50/unit Units		-	-	2 x 15V ac	42VA	-	115 → 230V ac	2	83.5mm	70mm	39mm	-	83.5 x 70 x 39mm	720g	-	PCB Mount	-	-	-	-	-	-	-	-	+130°C	50Hz	-	60Hz	-	-
Stock information currently inaccessible Walsall Transformers 9V ac 2 Output Through Hole PCB Transformer, 12VA RS Stock No. 805-669 Mfr. Part No. WT1280 Subtotal (1 unit) CHF.4.70(exc. VAT) CHF.4.70/unit Units	Walsall Transformers	-	-	9V ac	12VA	-	230V ac	2	54mm	41mm	45mm	-	54 x 41 x 45mm	-	-	Through Hole	-	-	-	-	-	-	-	-	-	-	-	-	-	-
Stock information currently inaccessible Walsall Transformers 20V ac 2 Output Through Hole PCB Transformer, 12VA RS Stock No. 805-697 Mfr. Part No. WT1283 Subtotal (1 unit) CHF.4.70(exc. VAT) CHF.4.70/unit Units	Walsall Transformers	-	-	20V ac	12VA	-	230V ac	2	54mm	41mm	45mm	-	54 x 41 x 45mm	-	-	Through Hole	-	-	-	-	-	-	-	-	-	-	-	-	-	-
Stock information currently inaccessible 21V ac 2 Output Through Hole PCB Transformer, 10VA RS Stock No. 207-5898 Mfr. Part No. 030-7088.0 Subtotal (1 unit) CHF.8.63(exc. VAT) CHF.8.63/unit Units	Era Elektrotechnik	-	-	21V ac	10VA	-	115V ac, 230V ac	2	44mm	28mm	53mm	-	44 x 28 x 53mm	-	-	Through Hole	-	-	-	-	-	-	-	-	-	-	-	-	-	-
Stock information currently inaccessible Block 24 V ac 2 Output Pin PCB Transformer, VDE 0570 Teil 2-6, IEC 61558-2-4, UL 94 V-0, IEC 61558-2-6, VDE 0570 Teil RS Stock No. 201-7139 Mfr. Part No. FL 10/24 Subtotal (1 unit) CHF.13.21(exc. VAT) CHF.13.21/unit Units	Block	PCB Transformer	24 V ac	-	-	115 V ac, 230 V ac	-	2	68mm	44 mm	57mm	-	-	0.98kg	Pin	-	5000V	-	-	-	-	Dual Secondary	-	40°C	-	50Hz	FL	60Hz	-	VDE 0570 Teil 2-6, IEC 61558-2-4, UL 94 V-0, IEC 61558-2-6, VDE 0570 Teil 2-4, DIN EN 61558-2-6, DIN EN 61558-2-4, VDE 0570 Teil 2-1, C-UL-US, DIN EN 61558-2-1, IEC 61558-2-1, ENEC 10 (VDE)
Stock information currently inaccessible 15V ac 2 Output Through Hole PCB Transformer, 3VA RS Stock No. 173-8885 Mfr. Part No. 45016 Subtotal (1 unit) CHF.8.57(exc. VAT) CHF.8.57/unit Units	Myrra	-	-	15V ac	3VA	-	230V ac	2	53mm	44mm	17mm	-	53 x 44 x 17mm	125g	-	Through Hole	-	-	-	-	-	-	-	-	+70°C	50Hz	-	60Hz	-	-
Stock information currently inaccessible Myrra 24 V ac 2 Output Through Hole PCB Transformer, EN 61558-2-6 1.5 VA RS Stock No. 173-9709 Mfr. Part No. 44096 Subtotal (1 unit) CHF.4.70(exc. VAT) CHF.4.70/unit Units	Myrra	PCB Transformer	24 V ac	-	-	230 V ac	-	2	32.6mm	27.6 mm	24.3mm	1.5VA	-	80g	Through Hole	-	4kV	-	-	-	-	-	-	70°C	-	50Hz	-	60Hz	-	EN 61558-2-6
Stock information currently inaccessible Myrra 12 V ac 2 Output PCB PCB Transformer, EN 61558-2-6 2.3 VA RS Stock No. 173-9800 Mfr. Part No. 44165 Subtotal (1 unit) CHF.5.68(exc. VAT) CHF.5.68/unit Units	Myrra	PCB Transformer	12 V ac	-	-	230 V ac	-	2	32.6mm	27.6 mm	29.8mm	2.3VA	-	70g	PCB	-	4kV	-	-	-	-	-	-	-	-	50Hz	-	60Hz	-	EN 61558-2-6
Stock information currently inaccessible 1:1 line isolation transformer,CWC9002 RS Stock No. 196-959 Mfr. Part No. 9002VF Subtotal (1 unit) CHF.4.45(exc. VAT) CHF.4.45/unit Units	Critchley	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
Stock information currently inaccessible Block 8V ac 2 Output Through Hole PCB Transformer, 13VA RS Stock No. 161-7787 Mfr. Part No. PT 13/2/8 Subtotal (28 units, in trays of 28) CHF.235.984(exc. VAT) CHF.8.428/unit Tray(s)	Block	-	-	8V ac	13VA	-	230V ac	2	56mm	47mm	40mm	-	56 x 47 x 40mm	420g	-	Through Hole	-	-	-	-	-	-	-	-	+40°C	-	-	-	-	-
Stock information currently inaccessible Myrra 18 V ac 2 Output Through Hole PCB Transformer, CCA procedure, CEI 126, UL 94 VO, CEI 85, EN 60950, UL 1585, EN RS Stock No. 173-8958 Mfr. Part No. 45023 Subtotal (1 unit) CHF.10.74(exc. VAT) CHF.10.74/unit Units	Myrra	PCB Transformer	18 V ac	-	-	230 V ac	-	2	53mm	44 mm	19mm	30VA	-	700g	Through Hole	-	4kV	-	-	-	-	-	-	250°C	-	50Hz	44000	60Hz	-	CCA procedure, CEI 126, UL 94 VO, CEI 85, EN 60950, UL 1585, EN 61558-2-6