2SB772SG-P, UTC, PNP Medium Power Silicon Bipolar Transistor (BJT)

# English Translation (technical version, suitable for datasheet & customer communication)

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> T/R = Tape/Reel, meaning tape-and-reel packaging for SMT automatic placement. Shipped on reels; this is not an electrical parameter. SG = SOT-89 package; P denotes the hFE gain grade: 160 ~ 320.

Key Parameters (Ta=25℃)

1. Package: SOT-89, surface mount

2. Type: PNP BJT

3. VCEO (Collector-Emitter Voltage): -30V

4. VCBO (Collector-Base Voltage): -40V

5. VEBO (Emitter-Base Voltage): -5V

6. Continuous Collector Current Ic: 3A

7. Power Dissipation Pd: 500mW

8. DC Current Gain hFE (Grade P): 160 ~ 320

9. Transition Frequency fT: 80MHz

10. Saturation Voltage VCE(sat): Typ. 0.3~0.5V (at Ic=-2A, Ib=-0.2A), low saturation voltage

11. Operating Junction Temperature: -55℃ ~ +150℃

12. Complementary Pair: **2SD882SG-P (NPN)**. Frequently used as a pair in electronic circuits.

Functions & Applications

1. Power switch: used as load switch in small systems to control relays, LEDs and fans.

2. Linear regulation: acts as pass element in low-dropout LDO regulators.

3. Audio amplification: small-power audio output amplification.

4. DC-DC power supply, simple boost / buck circuits.

5. Current amplification: use small control signal to drive high-current loads.

Application Scope

- Consumer power boards, small home appliances

- Small industrial control boards, relay driving

- Battery-powered equipment (3.7V lithium battery, 5V systems)

- Audio power amplifier output

- Chargers, simple DC-DC converters

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> Not suitable for high-voltage scenarios, maximum rated voltage is 30V. It is a low-speed switching transistor and not recommended for high-frequency high-power supplies.

Key Points

✅ Brand: UTC (Unisonic Technologies). Made in China. Stable lead time and cost-effective. SOT-89 SMT package for easy assembly.

✅ Grade P with high hFE; small base current can drive loads up to 3A.

✅ Paired with 2SD882; customers often inquire about both parts together.

✅ Gain grades (R/Q/P) feature different hFE values and cannot be substituted arbitrarily.