78253J MAX253-Compatible Converter Transformers

Murata Power Solutions 78253J Converter Transformers are specifically designed for use with the Maxim MAX253 chipset to provide isolated power supplies. These transformers feature J-STD-020D reflow, toroidal construction, and isolation to 4kVDC. The 78253J transformers are available in 3.3V and 5V versions. Murata Power Solutions has provided a center-tapped secondary winding, which allows for full-bridge, half-bridge, or voltage doubling.

Results: 15
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Description Datasheet Availability Pricing (KRW) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model Primary Voltage Rating
Secondary Voltage Rating
Power Rating
Secondary Current Rating
Mounting Style
Primary Winding
Secondary Winding
Length
Width
Height
Series
Murata Power Solutions Power Transformers - Board Mount TFMR 1:1.33, 4KV SM MAX253 MAX
Datasheet
787In Stock
Min.: 1
Mult.: 1

5 V 5 V 1 W 200 mA SMD/SMT Single Primary Winding Single Secondary Winding 9.52 mm 9 mm 6.35 mm 78253
Murata Power Solutions Power Transformers - Board Mount SM TRANSFORMER
Datasheet
285In Stock
100Expected 11/23/2026
Min.: 1
Mult.: 1

5 V 5 V 1 W 200 mA SMD/SMT Single Primary Winding Single Secondary Winding 9.52 mm 9 mm 6.35 mm 78253
Murata Power Solutions Power Transformers - Board Mount Max 253 TX 3.3v input 5v out DIP
Datasheet
40In Stock
Min.: 1
Mult.: 1

3.3 V 5 V 500 mW 100 mA Through Hole Single Primary Winding Single Secondary Winding 9.52 mm 9 mm 6.35 mm 78253
Murata Power Solutions Power Transformers - Board Mount 1:2.14 TRN 110/550 UH
Datasheet
212In Stock
Min.: 1
Mult.: 1

3.3 V 5 V 500 mW 100 mA Through Hole Single Primary Winding Single Secondary Winding 9.52 mm 9 mm 6.35 mm 78253
Murata Power Solutions Power Transformers - Board Mount DIP TRANS 4KVDC 5V/5V IN/OUT
Datasheet
249In Stock
Min.: 1
Mult.: 1

5 V 5 V 1 W 200 mA Through Hole Single Primary Winding Single Secondary Winding 9.52 mm 9 mm 6.35 mm 78253
Murata Power Solutions Power Transformers - Board Mount PLEASE SEE MURATA'S SUGGESTED ALTERNATE 78253/55JC
Datasheet
195In Stock
500Expected 9/21/2026
Min.: 1
Mult.: 1

3.3 V 5 V 500 mW 200 mA SMD/SMT Single Primary Winding Single Secondary Winding 9.52 mm 9 mm 6.35 mm 78253
Murata Power Solutions Power Transformers - Board Mount PLEASE SEE MURATA'S SUGGESTED ALTERNATE 78253/55JVC
Datasheet
27In Stock
400Expected 8/31/2026
Min.: 1
Mult.: 1

5 V 5 V 1 W 200 mA SMD/SMT Single Primary Winding Single Secondary Winding 9.52 mm 9 mm 6.35 mm 78253
Murata Power Solutions Power Transformers - Board Mount TFMR 1:2.14, 142 UH 3.3V 100MA
Datasheet
8In Stock
1,000Expected 10/16/2026
MouseReel Available
Min.: 1
Mult.: 1
: 500

3.3 V 5 V 500 mW 100 mA SMD/SMT Single Primary Winding Single Secondary Winding 9.52 mm 9 mm 6.35 mm 78253
Murata Power Solutions Power Transformers - Board Mount 5VIN 5VOUT 200MA 4000VDC 6PIN
Datasheet
188In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 500

5 V 5 V 1 W 200 mA SMD/SMT Single Primary Winding Single Secondary Winding 9.52 mm 9 mm 6.35 mm 78253
Murata Power Solutions Power Transformers - Board Mount TRANSFORMER 360UH MAX253 SMD
Datasheet
1,284On Order
MouseReel Available
Min.: 1
Mult.: 1
: 500

3.3 V 5 V 500 mW 100 mA SMD/SMT Single Primary Winding Single Secondary Winding 9.52 mm 9 mm 6.35 mm 78253
Murata Power Solutions Power Transformers - Board Mount 1:2.14 TRN 110/550 UH
Datasheet
550Expected 9/14/2026
Min.: 1
Mult.: 1

3.3 V 5 V 500 mW 100 mA SMD/SMT Single Primary Winding Single Secondary Winding 9.52 mm 9 mm 6.35 mm 78253
Murata Power Solutions Power Transformers - Board Mount 5VIN 5VOUT 200MA 1500VDC 6PIN
Datasheet
950Expected 11/23/2026
MouseReel Available
Min.: 1
Mult.: 1
: 500

5 V 5 V 1 W 200 mA SMD/SMT Single Primary Winding Single Secondary Winding 9.52 mm 9 mm 6.35 mm 78253
Murata Power Solutions Power Transformers - Board Mount TFMR 1:2.27 SM MAX253 MAXIM
Datasheet
311Expected 10/19/2026
Min.: 1
Mult.: 1

3.3 V 5 V 500 mW 100 mA SMD/SMT Single Primary Winding Single Secondary Winding 9.52 mm 9 mm 6.35 mm 78253
Murata Power Solutions Power Transformers - Board Mount DIP TRANS 4KVDC 5V/5V IN/OUT
Datasheet
Non-Stocked Lead-Time 8 Weeks
Min.: 1
Mult.: 1

5 V 5 V 500 mW 200 mA Through Hole Single Primary Winding Single Secondary Winding 9.52 mm 9 mm 6.35 mm 78253
Murata Power Solutions Power Transformers - Board Mount PLEASE SEE MURATA'S SUGGESTED ALTERNATE 78253/55JVC-R
Datasheet
Lead-Time 8 Weeks
MouseReel Available
Min.: 1
Mult.: 1
: 500

3.3 V 5 V 500 mW 200 mA SMD/SMT Single Primary Winding Single Secondary Winding 9.52 mm 9 mm 6.35 mm 78253