2N490B: 450mW Unijuction Transistor

Overview

Product Description

This Unijuction Transistor is packaged in TO-5 package, which has a power rating of 450mW.

Available as High Reliability device per MIL-PRF-19500 indicate –HR suffix after the part number. Contact for -HR flow. Add "PBF" suffix for Pb-free lead finish.

Applications:

Unijunction Transistors are used in thyristor-triggering, oscillator, pulse and timing circuits.

Technical Documentation

Availability:

Part Number Descriptive Datasheet HR Flow
Power Rating
PD
mW
Package
Inventory
Distributor On-
hand
Pricing Last
Update
2N490
Unijuction Transistor download download 450 TO-5 Digitron 1665 RFQ 5/24/2019 2:48:52 PM
2N490A
Unijuction Transistor download download 450 TO-5 Digitron 1648 RFQ 5/24/2019 2:48:54 PM
2N490B
Unijuction Transistor download download 450 TO-5 Digitron 1165 RFQ 5/24/2019 2:48:55 PM
2N490C
Unijuction Transistor download download 450 TO-5 Digitron 2146 RFQ 5/24/2019 2:48:56 PM
2N490-HR
Unijuction Transistor download download 450 TO-5 Digitron 0 RFQ 5/24/2019 10:54:25 AM
2N490A-HR
Unijuction Transistor download download 450 TO-5 Digitron 0 RFQ 5/24/2019 10:54:20 AM
2N490B-HR
Unijuction Transistor download download 450 TO-5 Digitron 0 RFQ 5/24/2019 10:54:22 AM
2N490C-HR
Unijuction Transistor download download 450 TO-5 Digitron 0 RFQ 5/24/2019 10:54:24 AM
Specifications
Part
Number
Descriptive Datasheet HR Flow
Power Rating
PD
mW
Intrinsic Standoff Ratio Max
η
 
Intrinsic Standoff Ratio Min
η
 
Interbase Resistance Min
rBB
KOHMS
Interbase Resistance Max
rBB
KOHMS
Min Valley Point Current
IV
mA
Package
2N490
Unijuction Transistor download download 450 0.62 0.51 6.2 9.1 8 TO-5
2N490A
Unijuction Transistor download download 450 0.62 0.51 6.2 9.1 8 TO-5
2N490B
Unijuction Transistor download download 450 0.62 0.51 6.2 9.1 8 TO-5
2N490C
Unijuction Transistor download download 450 0.62 0.51 6.2 9.1 8 TO-5
2N490-HR
Unijuction Transistor download download 450 0.62 0.51 6.2 9.1 8 TO-5
2N490A-HR
Unijuction Transistor download download 450 0.62 0.51 6.2 9.1 8 TO-5
2N490B-HR
Unijuction Transistor download download 450 0.62 0.51 6.2 9.1 8 TO-5
2N490C-HR
Unijuction Transistor download download 450 0.62 0.51 6.2 9.1 8 TO-5