Product Overview
Sanyo 2SB1136 Isolated PNP Power Transistor - 50V 12A TO-220ML Full-Pack, hFE Rank Q
Condition
Unused NOS. Evaluation: Visual inspection only. Function testing not performed. Body markings legible: B1136 Q with date code 7D2. Light oxidation visible on leads. Sourced from an electronics distributor consolidating inventory.
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Product Overview
Sanyo 2SB1136 (marked B1136) - PNP epitaxial planar silicon power transistor in a TO-220ML fully isolated full-pack package. Rated 50V collector-emitter and 12A continuous collector current, with a low VCE(sat) of -0.5V maximum. The isolated package integrates the insulating barrier into the molded body, eliminating the need for a separate mica washer when mounting to a common heatsink. This unit carries hFE gain rank Q (70-140). NPN complement is 2SD1669.
Key Features
- Polarity: PNP epitaxial planar silicon
- Collector-emitter voltage (VCEO): -50V
- Collector-base voltage (VCBO): -60V
- Emitter-base voltage (VEBO): -6V
- Continuous collector current (IC): -12A
- Peak collector current (ICP): -15A
- Collector dissipation (PC): 30W at Tc = 25°C
- Saturation voltage (VCE(sat)): -0.5V max at IC = -6A, IB = -0.6A
- hFE gain rank Q: 70-140
- Package: TO-220ML (TO-220F full-pack, fully isolated - no mica washer required)
- Pinout (facing front, left-to-right): Base - Collector - Emitter
- NPN complement: 2SD1669
Applications
- Relay driver circuits in industrial control panels and embedded systems
- High-speed inverter and DC-DC converter switching stages
- Motor driver circuits requiring sustained high current at low saturation voltage
- Audio amplifier output stages and power supply regulation (hobbyist and bench builds)
- Drop-in replacement for failed 2SB1136-Q in vintage Japanese consumer electronics
Frequently Asked Questions
The part is marked B1136, not 2SB1136. Is this the correct part?
Yes. Sanyo follows the Japanese Industrial Standard (JIS) convention of omitting the "2S" prefix on the physical marking. B1136 and 2SB1136 are the same part. The Q suffix on this unit indicates hFE gain rank Q (70-140).
Does the isolated package mean no insulator is needed when heatsinking?
Yes. The TO-220ML full-pack package has the electrical isolation built into the molded body. The collector tab is not exposed, so the transistor can be bolted directly to a shared metal heatsink without a mica washer or insulating pad.
My application requires hFE rank R or S. Will this unit work?
This unit is rank Q (hFE 70-140). Rank R is 100-200 and rank S is 140-280. For critical matching applications such as push-pull output stages, confirm the required gain rank before ordering. The overlap between Q and R (100-140) may be sufficient for some designs, but matched-rank sourcing should be verified against your circuit requirements.
What is the NPN complement for push-pull or complementary circuit designs?
The NPN complement to the 2SB1136 is the 2SD1669.
A transistor that does not need a washer is one fewer variable in a tight heatsink stack - for whoever is rebuilding a Japanese amp channel or wiring a compact converter board, that detail matters more than it sounds.
