FAIRCHILD TIP125 126 127 DATA SHEET
Summary
Designed for medium power linear switching applications, these PNP Epitaxial Darlington Transistors (TIP125/126/127) provide robust performance in high-current circuit design. This essential technical manual serves as a comprehensive resource, detailing absolute maximum ratings, precise electrical characteristics (including saturation voltages and current gains), and dynamic testing data. It is tailored for electronics engineers and power system designers who require reliable specifications for integrating high-power switching components into their next project.
Page 1 Text Content
TIP125/126/127
TIP125/126/127
Medium Power Linear Switching Applications Complementary to TIP120/121/122
TO-220
1.Base 2.Collector 3.Emitter
PNP Epitaxial Darlington Transistor Absolute Maximum Ratings TC=25°C unless otherwise noted
Equivalent Circuit
Symbol Parameter Value Units
VCBO Collector-Base Voltage : TIP125 - 60
: TIP126 - 80 : TIP127 - 100
Collector-Emitter Voltage : TIP125 - 60
VCEO : TIP126 - 80
: TIP127 - 100
VEBO Emitter-Base Voltage - 5
IC Collector Current (DC) - 5
ICP Collector Current (Pulse) - 8 R1 8kΩ≅ R2 0.12kΩ≅
IB Base Current (DC) - 120 m A PC Collector Dissipation (Ta=25°C) Collector Dissipation (TC=25°C) TJ Junction Temperature °C TSTG Storage Temperature - 65 ~ 150 °C
Electrical Characteristics TC=25°C unless otherwise noted Symbol Parameter Test Condition Min. Max. Units VCEO(sus) Collector-Emitter Sustaining Voltage
: TIP125 IC = -100m A, IB = 0 -60 : TIP126 -80 : TIP127 -120
ICEO Collector Cut-off Current
: TIP125 VCE = -30V, IB = 0 -2 m A
: TIP126 VCE = -40V, IB = 0 -2 m A : TIP127 VCE = -50V, IB = 0 -2 m A
ICBO Collector Cut-off Current
: TIP125 VCB = -60V, IE = 0 -1 m A
: TIP126 VCB = -80V, IE = 0 -1 m A
: TIP127 VCB = -100V, IE = 0 -1 m A
VBE = -5V, IC = 0 -2 m A
IEBO Emitter Cut-off Current
* DC Current Gain VCE = -3V, IC = 0.5A
VCE = -3V, IC = -3A
VCE(sat) * Collector-Emitter Saturation Voltage IC = -3A, IB = -12m A -2
IC=-5A, IB=-20m A -4
VBE(on) * Base-Emitter ON Voltage VCE = -3V, IC = -3A -2.5 Cob Output Capacitance VCB = -10V, IE = 0, f = 0.1MHz p F
* Pulse Test : PW≤300µs, Duty cycle ≤2%
©2001 Fairchild Semiconductor Corporation Rev. A1, June 2001
Page Summary Contents For FAIRCHILD TIP125 126 127 DATA SHEET
Manual Details
| Brand | Fairchild |
|---|---|
| Pages | 4 |
| File Size | 60.96 KB |
| Published | May 19, 2026 |
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Frequently Asked Questions
What are the absolute maximum voltage limits for each model (CBO/CEO)?
The ratings vary by model, providing capacities of -60V (TIP125), -80V (TIP126), and -100V (TIP127).
Are these products approved for critical life support medical applications?
No, Fairchild’s products are not authorized for use as critical components in life support devices without explicit written approval.
What is the physical arrangement when identifying the leads?
The transistor pins correspond to Base (1), Collector (2), and Emitter (3).