2N4871 The 2N4871 is a silicon PN unijunction transistor from Central Semiconductor, designed for oscillator, triggering, and timing applications. It comes in a TO-92 through-hole package.
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2N4871

Available from 1 distributors
Mfr Name: Central Semiconductor Corp
Central Semiconductor Corp
The 2N4871 is a silicon PN unijunction transistor from Central Semiconductor, designed for oscillator, triggering, and timing applications. It comes in a TO-92 through-hole package.
Total Stock: 1,414 pcs
$ Price Range: $1.03

2N4871 Available from 1 distributor

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2N4871 Specifications Quick View

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2N4871 Description

Short technical summary and product information.

The Central Semiconductor 2N4871 is a silicon PN unijunction transistor (UJT) designed for use in oscillator, triggering, and timing circuits. It features an intrinsic standoff ratio of 0.70 to 0.85 and an interbase resistance of 4.0 kΩ to 9.1 kΩ. The device can handle a maximum RMS emitter current of 1.5 A and a peak emitter current of 1.0 A (duty cycle ≤1%, PRR=10pps). Power dissipation is rated at 300 mW. The operating junction temperature range is -65°C to 125°C, with storage from -65°C to 150°C. The 2N4871 is housed in a TO-92 through-hole package, making it suitable for breadboarding and prototyping. Typical applications include relaxation oscillators, pulse generators, and timing circuits.

2N4871 Quick Information

Product Type: PN Unijunction Transistor
Canonical Name: Central Semiconductor 2N4871 PN Unijunction Transistor
Subcategory: Unijunction Transistors

2N4871 Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

2N4871 Estimated Pricing

Qty Low High
2,500+ $1.03 $1.03

Estimated market price range - modelled values for guidance only, not live distributor offers.

2N4871 Features

  • Silicon PN unijunction transistor design.
  • Intrinsic standoff ratio of 0.70 to 0.85.
  • Maximum RMS emitter current of 1.5 A.
  • TO-92 through-hole package for easy mounting.
  • Operating temperature range -65°C to 125°C.

2N4871 Applications

  • Ideal for relaxation oscillator circuits.
  • Used in pulse generator designs.
  • Suitable for timing and triggering applications.
  • Common in waveform generation circuits.

2N4871 FAQs

7 frequently asked questions generated from this part’s specifications.
What is the package type of the 2N4871?

The 2N4871 is available in a TO-92 through-hole package.

What is the operating temperature range?

The operating junction temperature range is -65°C to 125°C.

Is the 2N4871 RoHS compliant?

The 2N4871 is listed as RoHS3 compliant, but this is unverified.

What is the intrinsic standoff ratio of the 2N4871?

The intrinsic standoff ratio is 0.70 to 0.85 at VB2B1=10V.

What is the maximum emitter reverse voltage?

The maximum emitter reverse voltage is 30 V.

What is the power dissipation rating?

The maximum power dissipation is 300 mW.

What is the interbase resistance range?

The interbase resistance is 4.0 kΩ to 9.1 kΩ at VB2B1=3.0V.

2N4871 Alternate Parts

Same form/fit/function or matching attribute configuration across different manufacturers.
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2N4870
2N4870
NTE Electronics
The 2N4870 is a silicon PN unijunction transistor in a TO-92 package. It features an intrinsic standoff ratio of 0.56 to 0.75 and maximum emitter reverse voltage of 30V.
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