Motorola MPS4125 MPS4126 Data Handbook/Manual
Summary
Discover comprehensive details on high-performance PNP small-signal bipolar transistors (MPS4125/MPS4126). This technical manual provides engineers and electrical designers with essential data for component selection, including maximum ratings, thermal profiles, detailed DC/AC electrical characteristics (e.g., current gain, saturation voltage), and physical package dimensions. Use this guide to ensure accurate integration of reliable switching or amplification components into your electronic designs.
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SEMICONDUCTOR TECHNICAL DATA by MPS4125/D
PNP Silicon
COLLECTOR
EMITTER
MAXIMUM RATINGS
Rating Symbol MPS4125 MPS4126 Unit
CASE 29–04, STYLE 1
Collector–Emitter Voltage VCE –30 –25 Vdc
TO–92 (TO–226AA)
Collector–Base Voltage VCB –10 –25 Vdc Emitter–Base Voltage VEB –4.0 Vdc Collector Current — Continuous IC –200 m Adc Total Power Dissipation @ TA = 25°C PD m W Derate above 25°C 5.0 m W/°C Total Power Dissipation @ TC = 25°C PD 1.5 Derate above 25°C m W/°C Operating and Storage Junction TJ, Tstg –55 to +150 °C Temperature Range
THERMAL CHARACTERISTICS
Characteristic Symbol Max Unit
Thermal Resistance, Junction to Ambient RJA °C/W Thermal Resistance, Junction to Case RJC 83.3 °C/W
ELECTRICAL CHARACTERISTICS (TA = 25°C unless otherwise noted)
Characteristic Symbol Min Max Unit
OFF CHARACTERISTICS Collector–Emitter Breakdown Voltage MPS4125 V(BR)CEO –30 Vdc (IC = –1.0 m A, IB = 0) MPS4126 –25 Collector–Base Breakdown Voltage MPS4125 V(BR)CBO –30 Vdc
(IC = –10 A, IE = 0) MPS4126 –25
Emitter–Base Breakdown Voltage (IC = 0, IE = –10 A) V(BR)EBO –4.0 Vdc
Collector Cutoff Current (VCB = –20 V, IE = 0) ICBO –50 n Adc Emitter Cutoff Current (VEB = –3.0 V, IC = 0) IEBO –50 n Adc
REV 1
1Motorola Small–Signal Transistors, FETs and Diodes Device Data
Motorola, Inc. 1996
Page Summary Contents For Motorola MPS4125 MPS4126 Data Handbook/Manual
Manual Details
| Brand | Motorola |
|---|---|
| Pages | 4 |
| File Size | 74.44 KB |
| Published | June 01, 2026 |
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Frequently Asked Questions
What is the continuous collector current rating for the MPS4125?
The continuous collector current (IC) is rated at 200 mAdc.
What are the device package dimensions or pin functions?
The leads A to J provide dimensions, and Pin layout shows Emitter on Pin 1, Base on Pin 2, and Collector on Pin 3 for Style 1.
Can this transistor be used in life support systems?
No, Motorola products are not authorized for use in systems intended for surgical implant or any application where failure could cause personal injury or death.
What is the collector-emitter saturation voltage (CE(sat))?
The CE(sat) voltage is listed as –0.4 Vdc at specified test conditions.