2 Output 7 → 10W Flyback SMPS Transformer, 85 → 265V ac, 4 → 7 V ac, 8 → 17 V ac
- RS Stock No. 418-5515
- Mfr. Part No. 74010
- Manufacturer Myrra
Switch mode power transformers format E16 & EL19, 1 W → 16 W
Transformers forming the core of a switch mode power supply, in association with a specialist circuit (VIPer, TOPSwitch, CoolSet, or control circuit + Mosfet).
The secondaries can be connected in series.
Materials comply with UL94-V0.
| Technical specifications | |
| Input voltage: | 85 → 265 Veff |
| Primary reflected voltage: | 90 → 120 V |
| P / S insulation voltage: | ≥ 3750 V eff |
| Creepage path: | ≥ 6 mm |
| Air temperature | ≤ 50 °C |
| Dimensions (mm): | |
| E16: | 18 x 16 x 17.5 |
| E19: | 21 x 17 x 31 |
| ref. Myrra | Format | Primary inductance | Associated integrated circuits |
| 7400 | E16 | 3900 μH | TOP221, VIPer20 |
| 74001 | E16 | 3000 μH | TOP221, VIPer20, TDA716831 |
| 74002 | E16 | 3000 μH | TOP221, VIPer20, TDA716831 |
| 74003 | E16 | 3000 μH | TOP221, VIPer20, TDA716831 |
| 74010 | E16 | 1660 μH | TOP222, VIPer20, TDA716831 |
| 74020 | EL19 | 1250 μH | VIPer20, VIPer50,TDA716832 |
| 74021 | EL19 | 900 μH | TOP223, VIPer20, TDA716832 |
| ref. Myrra | Max. output |
Secondary 1 Vmin - Vmax / Imax |
Secondary 2 Vmin - Vmax / Imax |
| 74000 | 4 W | 3.3 → 7 V / 1.2 A | 8 → 17 V / 0.35 A |
| 74001 | 6 W | 3 → 6 V / 1.2 A | - |
| 74002 | 6 W | 9 → 18 V / 0.5 A | - |
| 74003 | 6 W | 2 → 4 V / 1.8 A | 3 → 6 V / 1.2 A |
| 74010 | 10 W | 3.3 → 7 V / 2 A | 8 →17 V / 0.85 A |
| 74020 | 16 W | 4 → 7 V / 3 A | 10 → 17 V / 1.4 A |
| 74021 | 16 W | 3.3 → 7 V / 3 A | 8 → 16.5 V / 1.4 A |
Standards
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 construction
Full varnish impregnation
| Technical specifications | |||||||
| VA | regulation | dimensions (mm) | pins (mm) | weight | |||
| nominal | typ. (%) | L | L | h* | L | Ø | (kg) |
| 3 | 20 | 38 | 35 | 30 | 5 | 1 | 0.14 |
| 6 | 25 | 43 | 36 | 33 | 5 | 1 | 0.18 |
| 12 | 12 | 54 | 45 | 41 | 5 | 1 | 0.4 |
| * above the PCB | |||||||
| Attribute | Value |
|---|---|
| Secondary Voltage Rating | 4 → 7 V ac, 8 → 17 V ac |
| Primary Voltage Rating | 85 → 265V ac |
| Power Rating | 7 → 10W |
| Number of Outputs | 2 |
| Mounting Type | Through Hole |
| Application | Flyback |
| Secondary Current | 2 A, 850 mA |
| Termination Type | Pin |
| Length | 18mm |
| Width | 17.5mm |
| Depth | 16mm |
| Dimensions | 18 x 17.5 x 16mm |
| Construction | CEI335, CEI61558, CEI950 |
| Number of Phases | 1 |
| Maximum Operating Frequency | 70kHz |
| Maximum Temperature | +50°C |
