PUC-B series
1-2 W SIP7 High Isolation Unregulated DC/DC Converter
Flex Power Modules’ PUC-B series is a range of isolated, unregulated 1-2 W DC/DC converters suitable for the Industrial, Transportation, Telecom and Datacom markets.
Housed in an industry standard SIP7 package measuring 19.7×7.1×11.5mm (0.77×0.28×0.45in), these devices are available with fixed input voltages of 5V; 12V & 24V, and single output voltages of 3.3V; 5V; 12V and 15V, and dual output voltages of ±5V; ±12V and ±15V. They offer an input to output isolation level of 6000Vdc, and no minimum load is required for operation.
Efficiency levels are up to 85% at 24Vin/12Vout/100% load, and operating temperature range is up to -40°C to +100°C. Additional features include output short-circuit protection and safety compliance to EN/UL62368-1. MTBF is as high as 15Mhrs.

Model | Vin | Vout | Pout | Iout | Eff | Mount |
---|---|---|---|---|---|---|
PUC0503S1B | 4.5–5.5 V | 3.3 V | 1 W | 0.3 A | 77% | TH |
PUC0503S2B | 4.5–5.5 V | 3.3 V | 2 W | 0.61 A | 77% | TH |
PUC0505D1B Multi-output |
4.5–5.5 V | 5 V -5 V |
0.5 W 0.5 W |
0.1 A 0.1 A |
77% | TH |
PUC0505S1B | 4.5–5.5 V | 5 V | 1 W | 0.2 A | 77% | TH |
PUC0505S2B | 4.5–5.5 V | 5 V | 2 W | 0.4 A | 79% | TH |
PUC0512D1B Multi-output |
4.5–5.5 V | 12 V -12 V |
0.5 W 0.5 W |
0.04 A 0.04 A |
78% | TH |
PUC0512D2B Multi-output |
4.5–5.5 V | 12 V -12 V |
1 W 1 W |
0.08 A 0.08 A |
82% | TH |
PUC0512S1B | 4.5–5.5 V | 12 V | 1 W | 0.8 A | 78% | TH |
PUC0512S2B | 4.5–5.5 V | 12 V | 2 W | 0.17 A | 83% | TH |
PUC1203S1B | 10.8-13.2 V | 3.3 V | 1 W | 0.3 A | 77% | TH |
PUC1203S2B | 10.8-13.2 V | 3.3 V | 2 W | 0.61 A | 77% | TH |
PUC1205D2B Multi-output |
10.8-13.2 V | 5 V -5 V |
1 W 1 W |
0.2 A 0.2 A |
82% | TH |
PUC1205S1B | 10.8-13.2 V | 5 V | 1 W | 0.2 A | 80% | TH |
PUC1205S2B | 10.8-13.2 V | 5 V | 2 W | 0.4 A | 80% | TH |
PUC1212D1B Multi-output |
10.8-13.2 V | 12 V -12 V |
0.5 W 0.5 W |
0.04 A 0.04 A |
80% | TH |
PUC1212D2B Multi-output |
10.8-13.2 V | 12 V -12 V |
1 W 1 W |
0.08 A 0.08 A |
83% | TH |
PUC1212S1B | 10.8-13.2 V | 12 V | 1 W | 0.08 A | 80% | TH |
PUC1212S2B | 10.8-13.2 V | 12 V | 2 W | 0.17 A | 84% | TH |
PUC1505S1B | 13.5-16.5 V | 5 V | 1 W | 0.2 A | 80% | TH |
PUC2403S1B | 21.6-26.4 V | 3.3 V | 1 W | 0.3 A | 75% | TH |
PUC2403S2B | 21.6-26.4 V | 3.3 V | 2 W | 0.61 A | 79% | TH |
PUC2405D1B Multi-output |
21.6-26.4 V | 5 V -5 V |
0.5 W 0.5 W |
0.1 A 0.1 A |
77% | TH |
PUC2405D2B Multi-output |
21.6-26.4 V | 5 V -5 V |
1 W 1 W |
0.2 A 0.2 A |
82% | TH |
PUC2405S1B | 21.6-26.4 V | 5 V | 1 W | 0.2 A | 78% | TH |
PUC2405S2B | 21.6-26.4 V | 5 V | 2 W | 0.4 A | 81% | TH |
PUC2412D1B Multi-output |
21.6-26.4 V | 12 V -12 V |
0.5 W 0.5 W |
0.04 A 0.04 A |
80% | TH |
PUC2412D2B Multi-output |
21.6-26.4 V | 12 V -12 V |
1 W 1 W |
0.08 A 0.08 A |
85% | TH |
PUC2412S1B | 21.6-26.4 V | 12 V | 1 W | 0.08 A | 80% | TH |
PUC2412S2B | 21.6-26.4 V | 12 V | 2 W | 0.17 A | 85% | TH |
PUC2415D1B Multi-output |
21.6-26.4 V | 15 V -15 V |
0.5 W 0.5 W |
0.03 A 0.03 A |
80% | TH |
PUC2415D2B Multi-output |
21.6-26.4 V | 15 V -15 V |
1 W 1 W |
0.07 A 0.07 A |
84% | TH |