DC/DC Converters – Mouser United Kingdom

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Fixed Isolated Modules

Würth Elektronik Fixed Isolated Modules offer fixed input voltages of 3.3V/5V/12V/24V and a fixed 5V output voltage. These devices are suitable for applications in interface isolation/communication (RS232, RS485, CAN) to eliminate ground loops. The MagI³C modules operate at a typical 24V to 5V conversion at 0.2A, achieving 80% efficiency for SIP-4 and 81% for SIP-7. The FISM series offers fixed output voltage, fully integrated DC/DC power supplies. These devices require no external components for operation, which reduces design effort and keeps complexity to a minimum. The Würth MagI³C modules integrate the switching power stage, inductor, input, and output capacitors in one package. These modules comply with the low-noise electromagnetic emission norm EN 55022 class B. Approvals include IEC/EN60950-1, 2nd Edition; UL60950-1, 2nd Edition; and CSA C22.2 No. 60950-1-07, 2nd Edition.

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (GBP) Filter the results in the table by unit price based on your quantity.	Qty.	Isolation	Mounting Style	Number of Outputs	Output Power	Output Voltage-Channel 1	Output Current-Channel 1	Industry
DC/DC Converters - Through Hole WPME-FISM 0.4A 3kVol 24 Vin 5 Vout SIP-7 1779405311 Wurth Elektronik 1: £4.91 123In Stock	Mfr. Part No. 1779405311 Mouser Part No 710-1779405311	Wurth Elektronik	DC/DC Converters - Through Hole WPME-FISM 0.4A 3kVol 24 Vin 5 Vout SIP-7 Learn More about Wurth Elektronik wurth fixed isolated modules	Datasheet	123In Stock	£4.91	Min.: 1 Mult.: 1	Isolated	Through Hole	1 Output	2 W	5 V	400 mA	Industrial
DC/DC Converters - Through Hole WPME-FISM SIP-4 Modu 5Vin 5Vout 1W 1.5kV 1779205111 Wurth Elektronik 1: £2.38 5,508In Stock	Mfr. Part No. 1779205111 Mouser Part No 710-1779205111	Wurth Elektronik	DC/DC Converters - Through Hole WPME-FISM SIP-4 Modu 5Vin 5Vout 1W 1.5kV Learn More about Wurth Elektronik wurth fixed isolated modules	Datasheet	5,508In Stock	£2.38 £2.18 £2.00 £1.76	Min.: 1 Mult.: 1	Isolated	Through Hole	1 Output	1 W	5 V	200 mA	Industrial
DC/DC Converters - SMD WPME-FISM 12Vin/12Vout 1w 4kV SMT 1768812241 Wurth Elektronik 1: £4.23 371In Stock New Product	Mfr. Part No. 1768812241 Mouser Part No 710-1768812241 New Product	Wurth Elektronik	DC/DC Converters - SMD WPME-FISM 12Vin/12Vout 1w 4kV SMT Learn More about Wurth Elektronik wurth fixed isolated modules	Datasheet	371In Stock	Cut Tape £4.23 £4.03 £3.85 £3.62 Reel £3.43 MouseReel Available	Min.: 1 Mult.: 1 : 500	Isolated	SMD/SMT	1 Output	1 W	12 V	84 mA	Industrial
DC/DC Converters - SMD WPME-FISM 5Vin/12Vout 1w 4kV SMT 1768812141 Wurth Elektronik 1: £4.23 253In Stock New Product	Mfr. Part No. 1768812141 Mouser Part No 710-1768812141 New Product	Wurth Elektronik	DC/DC Converters - SMD WPME-FISM 5Vin/12Vout 1w 4kV SMT Learn More about Wurth Elektronik wurth fixed isolated modules	Datasheet	253In Stock	Cut Tape £4.23 £4.03 £3.85 £3.62 Reel £3.43 MouseReel Available	Min.: 1 Mult.: 1 : 500	Isolated	SMD/SMT	1 Output	1 W	12 V	84 mA	Industrial
DC/DC Converters - SMD WPME-FIMM Fixed Isolated MicroModule 1769205132 Wurth Elektronik 1: £2.82 7,021In Stock 11,600On Order	Mfr. Part No. 1769205132 Mouser Part No 710-1769205132	Wurth Elektronik	DC/DC Converters - SMD WPME-FIMM Fixed Isolated MicroModule Learn More about Wurth Elektronik wurth fixed isolated modules	Datasheet	7,021In Stock 11,600On Order On Order Ship Dates Mfr. No: 1769205132 Stock: 7,021 Can Dispatch Immediately On Order: 3,600 Pending 8,000 Expected 06/11/2026 Factory Lead Time: 14 Weeks	Cut Tape £2.82 £2.67 £2.24 Reel £1.94 MouseReel Available	Min.: 1 Mult.: 1 : 400	Isolated	SMD/SMT	1 Output	1 W	5 V	200 mA	Industrial
DC/DC Converters - SMD WPME-FISM SMT-8 Modu 5Vin 5Vout 2W 3kV 1769405141 Wurth Elektronik 1: £4.66 8,257In Stock 5,500Expected 25/01/2027	Mfr. Part No. 1769405141 Mouser Part No 710-1769405141	Wurth Elektronik	DC/DC Converters - SMD WPME-FISM SMT-8 Modu 5Vin 5Vout 2W 3kV Learn More about Wurth Elektronik wurth fixed isolated modules	Datasheet	8,257In Stock 5,500Expected 25/01/2027	Cut Tape £4.66 £4.34 £4.12 £3.73 Reel £3.40 MouseReel Available	Min.: 1 Mult.: 1 : 500	Isolated	SMD/SMT	1 Output	2 W	5 V	400 mA	Industrial
DC/DC Converters - Through Hole WPME-FISM 0.4A 3kVol 12 Vin 5 Vout SIP-7 1779405241 Wurth Elektronik 1: £3.39 635In Stock 675Expected 04/01/2027	Mfr. Part No. 1779405241 Mouser Part No 710-1779405241	Wurth Elektronik	DC/DC Converters - Through Hole WPME-FISM 0.4A 3kVol 12 Vin 5 Vout SIP-7 Learn More about Wurth Elektronik wurth fixed isolated modules	Datasheet	635In Stock 675Expected 04/01/2027	£3.39 £3.22 £3.06 £2.85	Min.: 1 Mult.: 1	Isolated	Through Hole	1 Output	2 W	5 V	400 mA	Industrial
DC/DC Converters - Through Hole WPME-FISM 0.4A 3kVol 24 Vin 5 Vout SIP-7 1779405341 Wurth Elektronik 1: £3.72 58In Stock	Mfr. Part No. 1779405341 Mouser Part No 710-1779405341	Wurth Elektronik	DC/DC Converters - Through Hole WPME-FISM 0.4A 3kVol 24 Vin 5 Vout SIP-7 Learn More about Wurth Elektronik wurth fixed isolated modules	Datasheet	58In Stock	£3.72 £3.53 £3.35 £3.13	Min.: 1 Mult.: 1	Isolated	Through Hole	1 Output	2 W	5 V	400 mA	Industrial
DC/DC Converters - SMD WPME-FISM Fixed Isolated SMT Module 1769205141 Wurth Elektronik 1: £3.33 1,123In Stock 11,500On Order	Mfr. Part No. 1769205141 Mouser Part No 710-1769205141	Wurth Elektronik	DC/DC Converters - SMD WPME-FISM Fixed Isolated SMT Module Learn More about Wurth Elektronik wurth fixed isolated modules	Datasheet	1,123In Stock 11,500On Order On Order Ship Dates Mfr. No: 1769205141 Stock: 1,123 Can Dispatch Immediately On Order: 3,000 Expected 20/11/2026 8,500 Expected 27/11/2026 Factory Lead Time: 14 Weeks	Cut Tape £3.33 £3.11 £2.94 £2.65 Reel £2.59 View £2.33 £2.24 MouseReel Available	Min.: 1 Mult.: 1 : 500	Isolated	SMD/SMT	1 Output	1 W	5 V	200 mA	Industrial
DC/DC Converters - SMD WPME-FISM Fixed Isolated SMT Module 1769205241 Wurth Elektronik 1: £3.20 1,677In Stock	Mfr. Part No. 1769205241 Mouser Part No 710-1769205241	Wurth Elektronik	DC/DC Converters - SMD WPME-FISM Fixed Isolated SMT Module Learn More about Wurth Elektronik wurth fixed isolated modules	Datasheet	1,677In Stock	Cut Tape £3.20 £3.04 £2.87 £2.55 Reel £2.28 MouseReel Available	Min.: 1 Mult.: 1 : 500	Isolated	SMD/SMT	1 Output	1 W	5 V	200 mA	Industrial
DC/DC Converters - SMD WPME-FISM SMT-8 Modu 24Vin 5Vout 1W 3kV 1769205341 Wurth Elektronik 1: £3.22 1,704In Stock	Mfr. Part No. 1769205341 Mouser Part No 710-1769205341	Wurth Elektronik	DC/DC Converters - SMD WPME-FISM SMT-8 Modu 24Vin 5Vout 1W 3kV Learn More about Wurth Elektronik wurth fixed isolated modules	Datasheet	1,704In Stock	Cut Tape £3.22 £3.07 £2.90 £2.72 Reel £2.66 MouseReel Available	Min.: 1 Mult.: 1 : 500	Isolated	SMD/SMT	1 Output	1 W	5 V	200 mA	Industrial
DC/DC Converters - SMD WPME-FISM SMT-8 Modu 12Vin 5Vout 2W 3kV 1769405241 Wurth Elektronik 1: £4.23 1,718In Stock	Mfr. Part No. 1769405241 Mouser Part No 710-1769405241	Wurth Elektronik	DC/DC Converters - SMD WPME-FISM SMT-8 Modu 12Vin 5Vout 2W 3kV Learn More about Wurth Elektronik wurth fixed isolated modules	Datasheet	1,718In Stock	Cut Tape £4.23 £4.03 £3.85 £3.44 Reel £2.99 £2.97 MouseReel Available	Min.: 1 Mult.: 1 : 500	Isolated	SMD/SMT	1 Output	2 W	5 V	400 mA	Industrial
DC/DC Converters - Through Hole WPME-FISM SIP-7 Modu 5Vin 5Vout 1W 3kV 1779205141 Wurth Elektronik 1: £2.75 2,269In Stock	Mfr. Part No. 1779205141 Mouser Part No 710-1779205141	Wurth Elektronik	DC/DC Converters - Through Hole WPME-FISM SIP-7 Modu 5Vin 5Vout 1W 3kV Learn More about Wurth Elektronik wurth fixed isolated modules	Datasheet	2,269In Stock	£2.75 £2.60 £2.46 £2.23	Min.: 1 Mult.: 1	Isolated	Through Hole	1 Output	1 W	5 V	200 mA	Industrial
DC/DC Converters - Through Hole WPME-FISM Fixed Isolated SIP Module 1779205211 Wurth Elektronik 1: £3.14 501In Stock	Mfr. Part No. 1779205211 Mouser Part No 710-1779205211	Wurth Elektronik	DC/DC Converters - Through Hole WPME-FISM Fixed Isolated SIP Module Learn More about Wurth Elektronik wurth fixed isolated modules	Datasheet	501In Stock	£3.14 £2.62 £2.46	Min.: 1 Mult.: 1	Isolated	Through Hole	1 Output	1 W	5 V	200 mA	Industrial
DC/DC Converters - Through Hole WPME-FISM SIP-7 Modu 24Vin 5Vout 1W 3kV 1779205341 Wurth Elektronik 1: £2.87 524In Stock	Mfr. Part No. 1779205341 Mouser Part No 710-1779205341	Wurth Elektronik	DC/DC Converters - Through Hole WPME-FISM SIP-7 Modu 24Vin 5Vout 1W 3kV Learn More about Wurth Elektronik wurth fixed isolated modules	Datasheet	524In Stock	£2.87 £2.73 £2.63 £2.48 £2.28	Min.: 1 Mult.: 1	Isolated	Through Hole	1 Output	1 W	5 V	200 mA	Industrial
DC/DC Converters - Through Hole WPME-FISM MagI3C Power Module 0.4A 3kV SIP-7 / 19.65 x 7.05 x 10.16 mm 1779405141 Wurth Elektronik 1: £4.00 389In Stock	Mfr. Part No. 1779405141 Mouser Part No 710-1779405141	Wurth Elektronik	DC/DC Converters - Through Hole WPME-FISM MagI3C Power Module 0.4A 3kV SIP-7 / 19.65 x 7.05 x 10.16 mm Learn More about Wurth Elektronik wurth fixed isolated modules	Datasheet	389In Stock	£4.00 £3.61 £3.37	Min.: 1 Mult.: 1	Isolated	Through Hole	1 Output	2 W	5 V	400 mA	Industrial
DC/DC Converters - Through Hole FISM THT IsoVolt 1kV 2.97-3.63V Output 177920501 Wurth Elektronik 1: £4.90 29In Stock 42Expected 01/01/2027	Mfr. Part No. 177920501 Mouser Part No 710-177920501	Wurth Elektronik	DC/DC Converters - Through Hole FISM THT IsoVolt 1kV 2.97-3.63V Output Learn More about Wurth Elektronik wurth fixed isolated modules	Datasheet	29In Stock 42Expected 01/01/2027	£4.90	Min.: 1 Mult.: 1	Isolated	Through Hole	1 Output	1 W	5 V	200 mA	Industrial
DC/DC Converters - Through Hole FISM THT IsoVolt 1kV 4.5-5.5V Output 177920511 Wurth Elektronik 1: £4.00 193In Stock	Mfr. Part No. 177920511 Mouser Part No 710-177920511	Wurth Elektronik	DC/DC Converters - Through Hole FISM THT IsoVolt 1kV 4.5-5.5V Output Learn More about Wurth Elektronik wurth fixed isolated modules	Datasheet	193In Stock	£4.00 £3.61 £3.37	Min.: 1 Mult.: 1	Isolated	Through Hole	1 Output	1 W	5 V	200 mA	Industrial
DC/DC Converters - Through Hole FISM THT IsoVolt 1kV 10.8-13.2V Output 177920521 Wurth Elektronik 1: £4.00 23In Stock	Mfr. Part No. 177920521 Mouser Part No 710-177920521	Wurth Elektronik	DC/DC Converters - Through Hole FISM THT IsoVolt 1kV 10.8-13.2V Output Learn More about Wurth Elektronik wurth fixed isolated modules	Datasheet	23In Stock	£4.00 £3.61 £3.37	Min.: 1 Mult.: 1	Isolated	Through Hole	1 Output	1 W	5 V	200 mA	Industrial
DC/DC Converters - Through Hole FISM THT IsoVolt 4kV 10.8-13.2V Output 177920524 Wurth Elektronik 1: £4.18 3In Stock	Mfr. Part No. 177920524 Mouser Part No 710-177920524	Wurth Elektronik	DC/DC Converters - Through Hole FISM THT IsoVolt 4kV 10.8-13.2V Output Learn More about Wurth Elektronik wurth fixed isolated modules	Datasheet	3In Stock	£4.18	Min.: 1 Mult.: 1	Isolated	Through Hole	1 Output	1 W	5 V	200 mA	Industrial
DC/DC Converters - Through Hole WPME-FISM SIP-4 Modu 24Vin 5Vout 1W 1.5kV 1779205311 Wurth Elektronik 1: £2.46 426In Stock	Mfr. Part No. 1779205311 Mouser Part No 710-1779205311	Wurth Elektronik	DC/DC Converters - Through Hole WPME-FISM SIP-4 Modu 24Vin 5Vout 1W 1.5kV Learn More about Wurth Elektronik wurth fixed isolated modules	Datasheet	426In Stock	£2.46 £2.27 £2.09 £1.93	Min.: 1 Mult.: 1	Isolated	Through Hole	1 Output	1 W	5 V	200 mA	Industrial
DC/DC Converters - Through Hole WPME-FISM MagI3C Power Module 0.4A 1.5kV SIP-4 11.60 x 7.05 x 10x16 mm 1779405111 Wurth Elektronik 1: £4.91 79In Stock 559On Order	Mfr. Part No. 1779405111 Mouser Part No 710-1779405111	Wurth Elektronik	DC/DC Converters - Through Hole WPME-FISM MagI3C Power Module 0.4A 1.5kV SIP-4 11.60 x 7.05 x 10x16 mm Learn More about Wurth Elektronik wurth fixed isolated modules	Datasheet	79In Stock 559On Order On Order Ship Dates Mfr. No: 1779405111 Stock: 79 Can Dispatch Immediately On Order: 172 Expected 04/12/2026 387 Expected 25/12/2026 Factory Lead Time: 14 Weeks	£4.91	Min.: 1 Mult.: 1	Isolated	Through Hole	1 Output	2 W	5 V	400 mA	Industrial
DC/DC Converters - SMD WPME-FISM 24Vin/12Vout 1w 4kV SMT 1768812341 Wurth Elektronik 1: £4.23 16In Stock 500Expected 06/11/2026 New Product	Mfr. Part No. 1768812341 Mouser Part No 710-1768812341 New Product	Wurth Elektronik	DC/DC Converters - SMD WPME-FISM 24Vin/12Vout 1w 4kV SMT Learn More about Wurth Elektronik wurth fixed isolated modules	Datasheet	16In Stock 500Expected 06/11/2026	Cut Tape £4.23 £4.03 £3.85 £3.62 Reel £3.38 View £3.27 £3.23 MouseReel Available	Min.: 1 Mult.: 1 : 500	Isolated	SMD/SMT	1 Output	1 W	12 V	84 mA	Industrial
DC/DC Converters - SMD WPME-FISM SMT-8 Modu 24Vin 5Vout 2W 3kV 1769405341 Wurth Elektronik 1: £5.38 500Expected 26/10/2026	Mfr. Part No. 1769405341 Mouser Part No 710-1769405341	Wurth Elektronik	DC/DC Converters - SMD WPME-FISM SMT-8 Modu 24Vin 5Vout 2W 3kV Learn More about Wurth Elektronik wurth fixed isolated modules	Datasheet	500Expected 26/10/2026	Cut Tape £5.38 £5.01 £4.57 £4.09 Reel £3.83 MouseReel Available	Min.: 1 Mult.: 1 : 500	Isolated	SMD/SMT	1 Output	2 W	5 V	400 mA	Industrial
DC/DC Converters - Through Hole FISM THT IsoVolt 4kV 4.5-5.5V Output 177920514 Wurth Elektronik 1: £4.18 597Expected 04/12/2026	Mfr. Part No. 177920514 Mouser Part No 710-177920514	Wurth Elektronik	DC/DC Converters - Through Hole FISM THT IsoVolt 4kV 4.5-5.5V Output Learn More about Wurth Elektronik wurth fixed isolated modules	Datasheet	597Expected 04/12/2026	£4.18	Min.: 1 Mult.: 1	Isolated	Through Hole	1 Output	1 W	5 V	200 mA	Industrial

Fixed Isolated Modules

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