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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 (HKD) Filter the results in the table by unit price based on your quantity.	Qty.
DC/DC Converters - SMD WPME-FISM 24Vin/12Vout 1w 4kV SMT 1768812341 Wurth Elektronik 1: HK$46.36 512In Stock 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	512In Stock	Cut Tape HK$46.36 HK$44.14 HK$42.17 HK$39.62 Reel HK$37.24 View HK$36.58 HK$36.25 MouseReel Available	Min.: 1 Mult.: 1 : 500
DC/DC Converters - Through Hole WPME-FISM 0.4A 3kVol 24 Vin 5 Vout SIP-7 1779405311 Wurth Elektronik 1: HK$53.76 121In 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	121In Stock	HK$53.76 HK$53.68	Min.: 1 Mult.: 1
DC/DC Converters - Through Hole WPME-FISM SIP-4 Modu 5Vin 5Vout 1W 1.5kV 1779205111 Wurth Elektronik 1: HK$26.06 4,998In 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	4,998In Stock	HK$26.06 HK$23.92 HK$21.87 HK$19.32	Min.: 1 Mult.: 1
DC/DC Converters - SMD WPME-FISM 12Vin/12Vout 1w 4kV SMT 1768812241 Wurth Elektronik 1: HK$46.36 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 HK$46.36 HK$44.14 HK$42.17 HK$39.62 Reel HK$37.48 MouseReel Available	Min.: 1 Mult.: 1 : 500
DC/DC Converters - SMD WPME-FISM 5Vin/12Vout 1w 4kV SMT 1768812141 Wurth Elektronik 1: HK$46.36 172In Stock 500Expected 5/2/2027 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	172In Stock 500Expected 5/2/2027	Cut Tape HK$46.36 HK$44.14 HK$42.17 HK$39.62 Reel HK$37.48 MouseReel Available	Min.: 1 Mult.: 1 : 500
Power Management Modules WPME-FISM 3.3Vin/5Vout 1W/3kV Module 1779205011 Wurth Elektronik 1: HK$40.61 84In Stock New Product	Mfr. Part No. 1779205011 Mouser Part No 710-1779205011 New Product	Wurth Elektronik	Power Management Modules WPME-FISM 3.3Vin/5Vout 1W/3kV Module Learn More about Wurth Elektronik wurth fixed isolated modules	Datasheet	84In Stock	Cut Tape HK$40.61 HK$36.74 HK$30.50 Reel HK$30.50 HK$30.41 MouseReel Available	Min.: 1 Mult.: 1 : 42
Power Management Modules WPME-FISM 3.3Vin/5Vout/1W/4kV 1769205041 Wurth Elektronik 1: HK$39.05 185In Stock 1,000Expected 22/1/2027 New Product	Mfr. Part No. 1769205041 Mouser Part No 710-1769205041 New Product	Wurth Elektronik	Power Management Modules WPME-FISM 3.3Vin/5Vout/1W/4kV Learn More about Wurth Elektronik wurth fixed isolated modules	Datasheet	185In Stock 1,000Expected 22/1/2027	Cut Tape HK$39.05 HK$36.99 HK$34.94 HK$34.61 Reel HK$32.80 MouseReel Available	Min.: 1 Mult.: 1 : 500
DC/DC Converters - Through Hole WPME-FISM 0.4A 3kVol 12 Vin 5 Vout SIP-4 1779405211 Wurth Elektronik 1: HK$54.42 377In Stock	Mfr. Part No. 1779405211 Mouser Part No 710-1779405211	Wurth Elektronik	DC/DC Converters - Through Hole WPME-FISM 0.4A 3kVol 12 Vin 5 Vout SIP-4 Learn More about Wurth Elektronik wurth fixed isolated modules	Datasheet	377In Stock	HK$54.42 HK$53.43 HK$53.35 HK$53.27	Min.: 1 Mult.: 1
DC/DC Converters - SMD WPME-FIMM Fixed Isolated MicroModule 1769205132 Wurth Elektronik 1: HK$30.83 11,179In Stock 7,200On 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	11,179In Stock 7,200On Order On Order Ship Dates Mfr. No: 1769205132 Stock: 11,179 Can Dispatch Immediately On Order: 3,600 Pending 3,600 Expected 20/11/2026 Factory Lead Time: 14 Weeks	Cut Tape HK$30.83 HK$29.26 HK$24.58 Reel HK$21.21 MouseReel Available	Min.: 1 Mult.: 1 : 400
DC/DC Converters - SMD WPME-FISM SMT-8 Modu 5Vin 5Vout 2W 3kV 1769405141 Wurth Elektronik 1: HK$51.05 8,195In Stock 5,500Expected 19/2/2027	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	8,195In Stock 5,500Expected 19/2/2027	Cut Tape HK$51.05 HK$47.51 HK$45.13 HK$40.77 Reel HK$37.24 MouseReel Available	Min.: 1 Mult.: 1 : 500
DC/DC Converters - Through Hole WPME-FISM 0.4A 3kVol 24 Vin 5 Vout SIP-7 1779405341 Wurth Elektronik 1: HK$40.69 58In Stock 150On Order	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 150On Order On Order Ship Dates Mfr. No: 1779405341 Stock: 58 Can Dispatch Immediately On Order: 75 Expected 29/1/2027 75 Expected 2/2/2027 Factory Lead Time: 14 Weeks	HK$40.69 HK$38.63 HK$36.74 HK$34.36	Min.: 1 Mult.: 1
DC/DC Converters - SMD WPME-FISM Fixed Isolated SMT Module 1769205241 Wurth Elektronik 1: HK$35.02 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 HK$35.02 HK$33.29 HK$31.40 HK$27.95 Reel HK$24.91 MouseReel Available	Min.: 1 Mult.: 1 : 500
DC/DC Converters - SMD WPME-FISM SMT-8 Modu 24Vin 5Vout 1W 3kV 1769205341 Wurth Elektronik 1: HK$35.26 1,687In 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	1,687In Stock	Cut Tape HK$35.26 HK$33.62 HK$31.73 HK$29.76 Reel HK$29.18 MouseReel Available	Min.: 1 Mult.: 1 : 500
DC/DC Converters - SMD WPME-FISM SMT-8 Modu 12Vin 5Vout 2W 3kV 1769405241 Wurth Elektronik 1: HK$46.36 1,704In 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	1,704In Stock	Cut Tape HK$46.36 HK$44.14 HK$42.17 HK$37.65 Reel HK$32.72 HK$32.47 MouseReel Available	Min.: 1 Mult.: 1 : 500
DC/DC Converters - SMD WPME-FISM SMT-8 Modu 24Vin 5Vout 2W 3kV 1769405341 Wurth Elektronik 1: HK$58.86 310In Stock 190On Order	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	310In Stock 190On Order	Cut Tape HK$58.86 HK$54.91 HK$49.98 HK$44.72 Reel HK$42.00 MouseReel Available	Min.: 1 Mult.: 1 : 500
DC/DC Converters - Through Hole WPME-FISM SIP-7 Modu 5Vin 5Vout 1W 3kV 1779205141 Wurth Elektronik 1: HK$30.09 2,262In 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	2,262In Stock	HK$30.09 HK$28.52 HK$26.96 HK$24.41	Min.: 1 Mult.: 1
DC/DC Converters - Through Hole WPME-FISM Fixed Isolated SIP Module 1779205211 Wurth Elektronik 1: HK$34.44 440In 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	440In Stock	HK$34.44 HK$28.69 HK$26.96	Min.: 1 Mult.: 1
DC/DC Converters - Through Hole WPME-FISM SIP-7 Modu 24Vin 5Vout 1W 3kV 1779205341 Wurth Elektronik 1: HK$31.48 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	HK$31.48 HK$29.92 HK$28.77 HK$27.13 HK$24.99	Min.: 1 Mult.: 1
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: HK$43.73 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	HK$43.73 HK$39.46 HK$36.91	Min.: 1 Mult.: 1
DC/DC Converters - SMD WPME-FISM Fixed Isolated SMT Module 1769205141 Wurth Elektronik 1: HK$36.50 484In 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	484In Stock 11,500On Order On Order Ship Dates Mfr. No: 1769205141 Stock: 484 Can Dispatch Immediately On Order: 3,000 Expected 20/11/2026 8,500 Expected 27/11/2026 Factory Lead Time: 14 Weeks	Cut Tape HK$36.50 HK$34.03 HK$32.22 HK$28.93 Reel HK$28.36 View HK$25.48 HK$24.58 MouseReel Available	Min.: 1 Mult.: 1 : 500
DC/DC Converters - Through Hole FISM THT IsoVolt 1kV 4.5-5.5V Output 177920511 Wurth Elektronik 1: HK$43.73 148In 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	148In Stock	HK$43.73 HK$39.46 HK$36.91	Min.: 1 Mult.: 1
DC/DC Converters - Through Hole FISM THT IsoVolt 1kV 10.8-13.2V Output 177920521 Wurth Elektronik 1: HK$43.73 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	HK$43.73 HK$39.46 HK$36.91	Min.: 1 Mult.: 1
DC/DC Converters - Through Hole FISM THT IsoVolt 4kV 10.8-13.2V Output 177920524 Wurth Elektronik 1: HK$45.79 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	HK$45.79	Min.: 1 Mult.: 1
DC/DC Converters - Through Hole WPME-FISM SIP-4 Modu 24Vin 5Vout 1W 1.5kV 1779205311 Wurth Elektronik 1: HK$26.96 415In 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	415In Stock	HK$26.96 HK$24.82 HK$22.85 HK$21.13	Min.: 1 Mult.: 1
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: HK$53.76 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 4/12/2026 387 Expected 29/1/2027 Factory Lead Time: 14 Weeks	HK$53.76	Min.: 1 Mult.: 1

Fixed Isolated Modules

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