RS Components
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3 Output 15 → 30W Flyback SMPS Transformer, 85 → 265V ac, 3.3 → 7 V ac, 8 → 17 V ac

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RS Stock No.:
Mfr. Part No.:
COO (Country of Origin):
UnitsPer unit
1 - 24£6.26
25 - 49£4.57
50 - 99£4.35
100 - 249£4.24
250 +£3.96

Switch mode power supply transformers format E25 & ETD, 15 W switch mode

From Myrra the E25 and ETD Series flyback transformers form the core of a switch mode power supply in association with a specialised circuit (VIPer, TOPSwitch, CoolSet, or control circuit + Mosfet.) Constructed with reinforced insulation, the E25 and ETD Series of flyback transformers exclusively use UL94-V0 listed materials.

Features and Benefits:
• Primary / Secondary Insulation ≥ 4000V
• Primary / Auxiliary Insulation ≥ 1500V
• Creepage distance Primary / Secondary ≥ 8mm
• Secondaries can be connected in series or in parallel.
• Materials comply with UL94-V0


IEC 950, IEC 61558 for reinforced insulation

Open Frame - Laminated

PCB mounting mains transformers with a single 230Va.c. or twin 115Va.c. 50/60Hz primary winding. Independent secondary windings may be connected in series or parallel to give a wide range of output voltage and current options.

Double section metric bobbin constructionFull varnish impregnation

Secondary Voltage Rating3.3 → 7 V ac, 8 → 17 V ac
Primary Voltage Rating85 → 265V ac
Power Rating15 → 30W
Number of Outputs3
Mounting TypeThrough Hole
Secondary Current1.5 A, 3 A
Termination TypePin
Dimensions26.5 x 22.5 x 26.5 mmmm
Number of Phases1
ConstructionCEI335, CEI61558, CEI950
Maximum Operating Frequency100kHz