TIP121
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Fairchild Semiconductor TIP121

Manufacturer No:
TIP121
Manufacturer:
Fairchild Semiconductor
Package:
Bulk
Description:
TRANS NPN DARL 80V 5A TO220AB
Delivery:
Payment:
iso14001
iso45001
iso9001
iso13485

Product Introduction

Overview

The TIP121 is an NPN Epitaxial Darlington Transistor manufactured by Fairchild Semiconductor. It is housed in a TO-220 package and is designed for medium power linear switching applications. This transistor is part of the TIP120/TIP121/TIP122 series, which are complementary to the TIP125/TIP126/TIP127 series. The TIP121 is ideal for simple switching circuits and can handle moderate power loads, making it a versatile component in various electrical circuitries.

Key Specifications

Parameter Value Unit
Collector-Base Voltage (VCBO) 80 V
Collector-Emitter Voltage (VCEO) 80 V
Emitter-Base Voltage (VEBO) 5 V
Collector Current (DC) (IC) 5 A
Collector Current (Pulse) (ICP) 8 A
Base Current (DC) (IB) 120 mA mA
Collector Dissipation (Ta=25°C) (PC) 2 W
Junction Temperature (TJ) 150 °C
Storage Temperature (TSTG) -65 to 150 °C
DC Current Gain (hFE) 1000
Collector-Emitter Saturation Voltage (VCE(sat)) 2.0 V (IC = 3A, IB = 12mA), 4.0 V (IC = 5A, IB = 20mA) V
Base-Emitter On Voltage (VBE(on)) 2.5 V

Key Features

  • Medium power linear switching applications
  • NPN Epitaxial Darlington Transistor configuration
  • Housed in a TO-220 package
  • High DC current gain (hFE) of 1000
  • Collector-Emitter Saturation Voltage of 2.0 V and 4.0 V under different conditions
  • Base-Emitter On Voltage of 2.5 V
  • Maximum working temperature of 150°C
  • Collector Dissipation of 2 W at Ta=25°C and 65 W at Tc=25°C

Applications

  • Motor Drivers
  • Battery Chargers
  • Audio Amplifier Stages
  • Audio Power Amplifier Circuits
  • Audio Preamplifiers and Stages
  • Driving or Switching Loads under 5A
  • Output of Microcontrollers

Q & A

  1. What is the TIP121 transistor?

    The TIP121 is an NPN Epitaxial Darlington Transistor used for medium power linear switching applications, housed in a TO-220 package.

  2. What are the key specifications of the TIP121 transistor?

    Key specifications include a Collector-Base Voltage of 80V, Collector-Emitter Voltage of 80V, Collector Current (DC) of 5A, and a Junction Temperature of 150°C.

  3. What are the typical applications of the TIP121 transistor?

    Applications include motor drivers, battery chargers, audio amplifier stages, audio power amplifier circuits, and driving or switching loads under 5A.

  4. What is the maximum collector current of the TIP121 transistor?

    The maximum collector current (DC) is 5 A, and the maximum collector current (pulse) is 8 A.

  5. What is the DC current gain (hFE) of the TIP121 transistor?

    The DC current gain (hFE) is 1000..

  6. What is the collector-emitter saturation voltage of the TIP121 transistor?

    The collector-emitter saturation voltage is 2.0 V (IC = 3A, IB = 12mA) and 4.0 V (IC = 5A, IB = 20mA)..

  7. Can the TIP121 transistor be used in high-temperature environments?

    The TIP121 transistor has a maximum working temperature of 150°C.

  8. What package type is the TIP121 transistor available in?

    The TIP121 transistor is housed in a TO-220 package.

  9. What are some possible replacements for the TIP121 transistor?

    Possible replacements include TIP100, TIP101, TIP102, TIP105, TIP106, TIP107, and TIP126.

  10. How does the TIP121 transistor perform in a circuit?

    The TIP121 transistor can be used to control loads such as DC motors. It turns on when a pulse is applied to its base, allowing current to flow through the collector and emitter, thus activating the load.

Product Attributes

Transistor Type:NPN - Darlington
Current - Collector (Ic) (Max):5 A
Voltage - Collector Emitter Breakdown (Max):80 V
Vce Saturation (Max) @ Ib, Ic:4V @ 20mA, 5A
Current - Collector Cutoff (Max):500µA
DC Current Gain (hFE) (Min) @ Ic, Vce:1000 @ 3A, 3V
Power - Max:2 W
Frequency - Transition:- 
Operating Temperature:150°C (TJ)
Mounting Type:Through Hole
Package / Case:TO-220-3
Supplier Device Package:TO-220AB
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Same Series
TIP121
TIP121
TRANS NPN DARL 80V 5A TO220AB
TIP126
TIP126
TRANS PNP DARL 80V 5A TO220-3
TIP125
TIP125
TRANS PNP DARL 60V 5A TO220

Similar Products

Part Number TIP121 TIP141 TIP151 TIP126 TIP122 TIP127 TIP121G TIP125 TIP131 TIP101 TIP111 TIP120
Manufacturer Fairchild Semiconductor NTE Electronics, Inc NTE Electronics, Inc NTE Electronics, Inc NTE Electronics, Inc NTE Electronics, Inc onsemi STMicroelectronics onsemi NTE Electronics, Inc Fairchild Semiconductor NTE Electronics, Inc
Product Status Active Active Active Active Active Active Active Active Obsolete Active Obsolete Active
Transistor Type NPN - Darlington NPN NPN - Darlington PNP - Darlington NPN - Darlington PNP - Darlington NPN - Darlington PNP - Darlington NPN - Darlington NPN - Darlington NPN - Darlington NPN - Darlington
Current - Collector (Ic) (Max) 5 A 10 A 10 A 5 A 5 A 5 A 5 A 5 A 8 A 8 A 2 A -
Voltage - Collector Emitter Breakdown (Max) 80 V 80 V 350 V 80 V 100 V 100 V 80 V 60 V 80 V 80 V 80 V 60 V
Vce Saturation (Max) @ Ib, Ic 4V @ 20mA, 5A - 2V @ 250mA, 5A 4V @ 20mA, 5A 4V @ 20mA, 5A 4V @ 20mA, 5A 4V @ 20mA, 5A 4V @ 20mA, 5A 3V @ 30mA, 6A 2.5V @ 80mA, 8A 2.5V @ 8mA, 2A 4V @ 20mA, 5A
Current - Collector Cutoff (Max) 500µA - 250µA 500µA 500µA 500µA 500µA 500µA 500µA 50µA 2mA 500µA
DC Current Gain (hFE) (Min) @ Ic, Vce 1000 @ 3A, 3V 1000 @ 5A, 4V 150 @ 2.5A, 5V 1000 @ 3A, 3V 1000 @ 3A, 3V 1000 @ 3A, 3V 1000 @ 3A, 3V 1000 @ 3A, 3V 1000 @ 4A, 4V 1000 @ 3A, 4V 1000 @ 1A, 4V 1000 @ 3A, 3V
Power - Max 2 W 125 W 80 W 65 W 2 W 2 W 2 W 2 W 2 W 80 W 50 W -
Frequency - Transition - - - 4MHz - - - - - 4MHz 25MHz 4MHz
Operating Temperature 150°C (TJ) -65°C ~ 150°C (TJ) -65°C ~ 150°C (TJ) -65°C ~ 150°C (TJ) -65°C ~ 150°C (TJ) 150°C (TJ) -65°C ~ 150°C (TJ) 150°C (TJ) -65°C ~ 150°C (TJ) -65°C ~ 150°C (TJ) -65°C ~ 150°C (TJ) -65°C ~ 150°C (TJ)
Mounting Type Through Hole Through Hole Through Hole Through Hole Through Hole Through Hole Through Hole Through Hole Through Hole Through Hole Through Hole Through Hole
Package / Case TO-220-3 TO-218-3 TO-220-3 TO-220-3 TO-220-3 TO-220-3 TO-220-3 TO-220-3 TO-220-3 TO-220-3 TO-220-3 TO-220-3
Supplier Device Package TO-220AB TO-218 TO-220 TO-220-3 TO-220 TO-220 TO-220 TO-220 TO-220 TO-220-3 TO-220-3 TO-220-3

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