Model: 2N491

Transistor

Properties:

Inclosure Material
Metal
Overall Length
0.250 inches
Terminal Length
1.500 inches
Overall Diameter
0.359 inches
Internal Configuration
Unijunction
Electrode Internally-electrically Connected To Case
Collector
Internal Junction Configuration
Pn
Mounting Method
Terminal
Terminal Circle Diameter
0.200 inches
Features Provided
Hermetically sealed case
Semiconductor Material
Silicon
Voltage Rating In Volts Per Characteristic
60.0 emitter to base voltage, dc
Current Rating Per Characteristic
70.00 milliamperes source cutoff current blank
Power Rating Per Characteristic
600.00 milliwatts small-signal input power, common-collector preset
Maximum Operating Tempurature Per Measurement Point
175.0 degrees celsius junction
Test Data Document
81349-mil-s-19500 specification (includes engineering type bulletins, brochures, etc., that reflect specification type data in specification format; excludes commercial catalogs, industry directories, and similar trade publications, reflecting general type data on certain environmental and performance requirements and test conditions that are shown as "typical", "average", "", etc.).
Terminal Type And Quantity
3 uninsulated wire lead
Specification Data
81349-mil-s-19500/75 government specification
NSN
5961-00-808-8398
Part Number
2N491
Description
Transistor
CAGE
81349

An active semiconductor device with three or more electrodes. May or may not include mounting hardware and/or heatsink. Excludes semiconductor device, diode and semiconductor device, thyristor. For solid state devices which are responsive to visible or infrared radiant energy, see semiconductor device, photo.

Part 2N491 NSN 5961-00-808-8398

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
20588
FIIG:
A110A0
Concept No.:
App. Key:
D
Cond. Code:
1
Status:
A

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators
HMIC
PMIC
ESD/EMI
ENAC
MMAC
CRITL
HMIC:
N
PMIC:
U
ESD:
ESD:
MMAC:
CRITL:
X

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
063025
UFC:
34525
LTL:
RATING VARIABLE
LCL:
--
WCC:
72D
TCC:
Z
SHC:
9
ACC:
Instruments/Radio

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Schedule B and Export
  • Schedule B: 8541500080
  • SITC: 77639
  • End Use: Semiconductors
  • NAICS: 334413
  • USDA: 1

Freight Class: Semiconductor devices, nesoi

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