MOTOROLA BC846ALT1 Data Sheet
Summary
Discover high-performance NPN silicon transistors, ideal for powering various small-signal electronic circuits. This comprehensive technical datasheet is an essential resource detailing full electrical characteristics, thermal performance limits, and both ON/OFF operating curves. Whether you are a circuit designer or electronics engineer, this manual provides the precise parameters needed to select and validate components, ensuring reliable operation in analog and digital applications.
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SEMICONDUCTOR TECHNICAL DATA by BC846ALT1/D
NPN Silicon
COLLECTOR
BC846, BC847 and BC848 are Motorola Preferred Devices
MAXIMUM RATINGS EMITTER
BC847 BC848 Rating Symbol BC846 BC850 BC849 Unit
Collector–Emitter Voltage VCEO Collector–Base Voltage VCBO Emitter–Base Voltage VEBO 6.0 6.0 5.0 Collector Current — Continuous IC m Adc CASE 318–08, STYLE 6
SOT–23 (TO–236AB)
THERMAL CHARACTERISTICS
Characteristic Symbol Max Unit
Total Device Dissipation FR–5 Board, (1) PD TA = 25°C m W Derate above 25°C 1.8 m W/°C Thermal Resistance, Junction to Ambient RJA °C/W Total Device Dissipation PD Alumina Substrate, (2) TA = 25°C m W Derate above 25°C 2.4 m W/°C Thermal Resistance, Junction to Ambient RJA °C/W Junction and Storage Temperature TJ, Tstg –55 to +150 °C
DEVICE MARKING BC846ALT1 = 1A; BC846BLT1 = 1B; BC847ALT1 = 1E; BC847BLT1 = 1F; BC847CLT1 = 1G; BC848ALT1 = 1J; BC848BLT1 = 1K; BC848CLT1 = 1L
ELECTRICAL CHARACTERISTICS (TA = 25°C unless otherwise noted)
Characteristic Symbol Min Typ Max Unit
OFF CHARACTERISTICS Collector–Emitter Breakdown Voltage BC846A,B V(BR)CEO (IC = 10 m A) BC847A,B,C, BC850A,B,C
BC848A,B,C, BC849A,B,C
Collector–Emitter Breakdown Voltage BC846A,B V(BR)CES (IC = 10 µA, VEB = 0) BC847A,B,C, BC850A,B,C
BC848A,B,C, BC849A,B,C
Collector–Base Breakdown Voltage BC846A,B V(BR)CBO (IC = 10 A) BC847A,B,C, BC850A,B,C
BC848A,B,C, BC849A,B,C
Emitter–Base Breakdown Voltage BC846A,B V(BR)EBO 6.0
(IE = 1.0 A) BC847A,B,C 6.0 BC848A,B,C, BC849A,B,C, BC850A,B,C 5.0
Collector Cutoff Current (VCB = 30 V) ICBO n A
(VCB = 30 V, TA = 150°C) 5.0 µA
1. FR–5 = 1.0 x 0.75 x 0.062 in 2. Alumina = 0.4 x 0.3 x 0.024 in. 99.5% alumina. Thermal Clad is a trademark of the Bergquist Company. Preferred devices are Motorola recommended choices for future use and best overall value.
1Motorola Small–Signal Transistors, FETs and Diodes Device Data
Motorola, Inc. 1996
Page Summary Contents For MOTOROLA BC846ALT1 Data Sheet
Manual Details
| Brand | Motorola |
|---|---|
| Pages | 6 |
| File Size | 221.18 KB |
| Published | June 04, 2026 |
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Frequently Asked Questions
What is the maximum rated continuous collector current ($I_C$) for these transistors?
The diagram and data sheet indicate that the standard rating for continuous $I_C$ across listed models is 100 mA.
Can I use this transistor in life support or surgical implantation devices?
No. Motorola states these products are not designed, intended, or authorized for use as components in systems intended to support or sustain life, or for surgical implants.
How must the device be derated if the operating temperature exceeds 25°C?
You must operate below the maximum dissipation values and apply the specified derating slopes (e.g., 1.8 mW/°C) as detailed in the thermal characteristics.
Do the listed 'Typical' electrical parameters apply directly to my final circuit design?
No. All operating parameters, including typical figures, must be validated and confirmed by your technical experts for each specific customer application.