Model: 2N491A

Transistor

Properties:

Inclosure Material
Metal
Overall Length
Between 0.240 inches and 0.260 inches
Terminal Length
1.500 inches
Overall Diameter
Between 0.335 inches and 0.370 inches
Internal Configuration
Unijunction
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
72.00 milliamperes source cutoff current blank
Current Rating Per Characteristic
72.00 milliamperes emitter current, dc
Power Rating Per Characteristic
600.0 milliwatts small-signal input power, common-collector preset
Power Rating Per Characteristic
600.0 milliwatts total power dissipation
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
5961-00-104-1402
Part Number
2N491A
Description
Transistor
CAGE
01295

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 2N491A NSN 5961-00-104-1402

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:
G
ESD:
B
ESD:
B
MMAC:
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
0.1000lbs
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
SPI No.:
SPI Rev.:
SPC Mkg:
00
LVL_A:
Q
LVL_B:
Q

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
063025
UFC:
34525
LTL:
RATING VARIABLE
LCL:
--
WCC:
658
TCC:
Z
SHC:
9
ACC:
Instruments/Radio

End Items End applications NSN 5961-00-104-1402 is a component of

  • Mk 48 Torpedo
  • An/tpn-18 Radar Set
  • An/pps-5b Radar Set
  • Kc-135a) F-108 (cfm-56 Aircraft Engine
  • C-2a (reprocured) Aircraft
  • Deep Submergence Systems Programs (dssp)
  • Mh-53e Helicopter
  • Airlifter C-17a Aircraft
  • Sh-60f Carrier Based Asw Helicopter
  • 010339491
  • Power Supply
  • 011736224
  • Radar Transmitter
  • 001387990
  • Radio Receiver-transmitter
  • 001866309
  • Television Monitor
  • 001884420
  • Circuit Card Assembly
  • 002024792
  • Circuit Card Assembly
  • 005430012
  • Telephone Set
  • 010503161
  • Circuit Card Assembly
  • 010503164
  • Circuit Card Assembly
  • 010509420
  • Circuit Card Assembly
  • 010525504
  • Circuit Card Assembly
  • 010591424
  • Circuit Card Assembly
  • 003466835
  • Circuit Card Assembly
  • 003563187
  • Circuit Card Assembly
  • 003653101
  • Circuit Card Assembly
  • 003653102
  • Circuit Card Assembly
  • 010674096
  • Azimuth El Control
  • 010675747
  • Circuit Card Assembly
  • 010559613
  • Circuit Card Assembly
  • 011694824
  • Electronic Components Assembly
  • 004882275
  • Circuit Card Assembly
  • 011694851
  • Radar Transmitter
  • 005444317
  • Circuit Card Assembly
  • 005743496
  • Circuit Card Assembly
  • 010924907
  • Radio Receiver-transmitter
  • 008920871
  • Radio Set
  • 010928074
  • Landing Control Central
  • 009442452
  • Radar Set
  • 011749172
  • Circuit Card Assembly
  • 007829311
  • Circuit Card Assembly
  • 002250763
  • Aircraft Components Test Set Subassembly
  • 008272767
  • Circuit Card Assembly
  • 008835380
  • Radar Modulator
  • 008840006
  • Electronic Components Assembly
  • 010709415
  • Radar Set
  • 009788982
  • Power Supply Subassembly
  • 013388880
  • Circuit Card Assembly
  • 013410410
  • Circuit Card Assembly
  • 010279991
  • Circuit Card Assembly
  • 001337645
  • Circuit Card Assembly

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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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