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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 (USD) Filter the results in the table by unit price based on your quantity.	Qty.
DC/DC Converters - Through Hole WPME-FISM SIP-7 Modu 24Vin 5Vout 1W 3kV 1779205341 Wurth Elektronik 1: $3.83 528In 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	528In Stock	$3.83 $3.64 $3.43 $3.05	Min.: 1 Mult.: 1
DC/DC Converters - SMD WPME-FISM 12Vin/12Vout 1w 4kV SMT 1768812241 Wurth Elektronik 1: $5.64 346In 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	346In Stock	Cut Tape $5.64 $5.37 $5.13 $4.83 Reel $4.57 MouseReel Available	Min.: 1 Mult.: 1 : 500
DC/DC Converters - SMD WPME-FISM 5Vin/12Vout 1w 4kV SMT 1768812141 Wurth Elektronik 1: $5.64 256In 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	256In Stock	Cut Tape $5.64 $5.37 $5.13 $4.83 Reel $4.57 MouseReel Available	Min.: 1 Mult.: 1 : 500
Power Management Modules WPME-FISM 3.3Vin/5Vout/1W/4kV 1769205041 Wurth Elektronik 1: $4.76 657In Stock 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	657In Stock	Cut Tape $4.76 $4.50 $4.26 $4.21 Reel $3.99 MouseReel Available	Min.: 1 Mult.: 1 : 500
DC/DC Converters - SMD WPME-FISM SMT-8 Modu 5Vin 5Vout 2W 3kV 1769405141 Wurth Elektronik 1: $6.21 4,022In Stock 6,500Expected 2026/10/02	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	4,022In Stock 6,500Expected 2026/10/02	Cut Tape $6.21 $5.78 $5.49 $4.97 Reel $4.54 MouseReel Available	Min.: 1 Mult.: 1 : 500
DC/DC Converters - Through Hole WPME-FISM 0.4A 3kVol 12 Vin 5 Vout SIP-7 1779405241 Wurth Elektronik 1: $4.51 163In Stock 500Expected 2026/10/02	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	163In Stock 500Expected 2026/10/02	$4.51 $4.29 $4.07 $3.79	Min.: 1 Mult.: 1
DC/DC Converters - Through Hole WPME-FISM 0.4A 3kVol 24 Vin 5 Vout SIP-7 1779405311 Wurth Elektronik 1: $6.54 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	$6.54	Min.: 1 Mult.: 1
DC/DC Converters - Through Hole WPME-FISM 0.4A 3kVol 24 Vin 5 Vout SIP-7 1779405341 Wurth Elektronik 1: $4.95 109In 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	109In Stock	$4.95 $4.70 $4.47 $4.18	Min.: 1 Mult.: 1
DC/DC Converters - SMD WPME-FIMM Fixed Isolated MicroModule 1769205132 Wurth Elektronik 1: $3.76 2,588In Stock 17,600On 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	2,588In Stock 17,600On Order On Order Ship Dates Mfr. No: 1769205132 Stock: 2,588 Can Dispatch Immediately On Order: 9,600 Expected 2026/10/02 8,000 Expected 2026/11/06 Factory Lead Time: 14 Weeks	Cut Tape $3.76 $3.56 $2.99 Reel $2.58 MouseReel Available	Min.: 1 Mult.: 1 : 400
DC/DC Converters - SMD WPME-FISM Fixed Isolated SMT Module 1769205141 Wurth Elektronik 1: $4.44 1,191In Stock 11,957On 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	1,191In Stock 11,957On Order On Order Ship Dates Mfr. No: 1769205141 Stock: 1,191 Can Dispatch Immediately On Order: 457 Pending 3,000 Expected 2026/11/20 8,500 Expected 2026/11/27 Factory Lead Time: 14 Weeks	Cut Tape $4.44 $4.14 $3.92 $3.52 Reel $3.45 View $3.11 $2.99 MouseReel Available	Min.: 1 Mult.: 1 : 500
DC/DC Converters - SMD WPME-FISM Fixed Isolated SMT Module 1769205241 Wurth Elektronik 1: $4.26 1,814In 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	1,814In Stock	Cut Tape $4.26 $4.05 $3.83 $3.40 Reel $3.04 MouseReel Available	Min.: 1 Mult.: 1 : 500
DC/DC Converters - SMD WPME-FISM SMT-8 Modu 24Vin 5Vout 1W 3kV 1769205341 Wurth Elektronik 1: $4.29 1,869In 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	1,869In Stock	Cut Tape $4.29 $4.09 $3.86 $3.62 Reel $3.55 MouseReel Available	Min.: 1 Mult.: 1 : 500
DC/DC Converters - SMD WPME-FISM SMT-8 Modu 12Vin 5Vout 2W 3kV 1769405241 Wurth Elektronik 1: $5.64 1,903In 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	1,903In Stock	Cut Tape $5.64 $5.37 $5.13 $4.58 Reel $3.98 $3.95 MouseReel Available	Min.: 1 Mult.: 1 : 500
DC/DC Converters - Through Hole WPME-FISM SIP-4 Modu 5Vin 5Vout 1W 1.5kV 1779205111 Wurth Elektronik 1: $3.17 1,380In Stock 4,200Expected 2026/10/23	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	1,380In Stock 4,200Expected 2026/10/23	$3.17 $2.91 $2.66 $2.35	Min.: 1 Mult.: 1
DC/DC Converters - Through Hole WPME-FISM SIP-7 Modu 5Vin 5Vout 1W 3kV 1779205141 Wurth Elektronik 1: $3.66 2,625In 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	2,625In Stock	$3.66 $3.47 $3.28 $2.97	Min.: 1 Mult.: 1
DC/DC Converters - Through Hole WPME-FISM Fixed Isolated SIP Module 1779205211 Wurth Elektronik 1: $4.19 516In 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	516In Stock	$4.19 $3.49 $3.28	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: $6.54 316In Stock	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	316In Stock	$6.54	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: $5.33 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	$5.33 $4.80 $4.49	Min.: 1 Mult.: 1
DC/DC Converters - Through Hole FISM THT IsoVolt 1kV 2.97-3.63V Output 177920501 Wurth Elektronik 1: $6.52 29In Stock	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	$6.52	Min.: 1 Mult.: 1
DC/DC Converters - Through Hole FISM THT IsoVolt 1kV 4.5-5.5V Output 177920511 Wurth Elektronik 1: $5.33 208In 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	208In Stock	$5.33 $4.80 $4.49	Min.: 1 Mult.: 1
DC/DC Converters - Through Hole FISM THT IsoVolt 4kV 4.5-5.5V Output 177920514 Wurth Elektronik 1: $5.57 422In Stock 600Expected 2026/12/04	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	422In Stock 600Expected 2026/12/04	$5.57	Min.: 1 Mult.: 1
DC/DC Converters - Through Hole FISM THT IsoVolt 1kV 10.8-13.2V Output 177920521 Wurth Elektronik 1: $5.33 25In 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	25In Stock	$5.33 $4.80 $4.49	Min.: 1 Mult.: 1
DC/DC Converters - Through Hole FISM THT IsoVolt 4kV 10.8-13.2V Output 177920524 Wurth Elektronik 1: $5.57 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	$5.57	Min.: 1 Mult.: 1
DC/DC Converters - Through Hole WPME-FISM Fixed Isolated SIP Module 1779205241 Wurth Elektronik 1: $3.85 24In Stock	Mfr. Part No. 1779205241 Mouser Part No 710-1779205241	Wurth Elektronik	DC/DC Converters - Through Hole WPME-FISM Fixed Isolated SIP Module Learn More about Wurth Elektronik wurth fixed isolated modules	Datasheet	24In Stock	$3.85 $3.65 $3.44 $3.17	Min.: 1 Mult.: 1
DC/DC Converters - Through Hole WPME-FISM SIP-4 Modu 24Vin 5Vout 1W 1.5kV 1779205311 Wurth Elektronik 1: $3.28 514In 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	514In Stock	$3.28 $3.02 $2.78 $2.57	Min.: 1 Mult.: 1

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