PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1N4438Rectifier,semiconductor Device,u

Varo Llc · NSN 5961-00-449-4245 · FSC 5961 · No Item Name Available
Verified by PartsTable
NSN 5961-00-449-4245 — this item is cataloged by the U.S. Government under National Stock Number 5961-00-449-4245. Primary manufacturer part number: 1N4438.
Features
  • Rectifier,semiconductor Device,u — FSC 5961
  • Terminal Type and Quantity: 4 TAB, SOLDER LUG
  • Overall Diameter: 0.761 INCHES NOMINAL IN
  • Absolute Maximum Current Rating Per Characteristic: 10.00 AMPERES AVERAGE FORWARD CURRENT AVERAGED OVER A FULL 60-HZ CYCLE AND 100.00 AMPERES PEAK FORWARD SURGE CURRENT
  • Material: SILICON
  • Mounting Method: UNTHREADED HOLE(S)
  • Absolute Maximum Voltage Rating in Volts Per Characteristic: 600.0 REPETITIVE PEAK REVERSE VOLTAGE
  • Circuit Connection Style Designator: BRIDGE 1 PHASE
Applications
  • Applications requiring Silicon construction
General Description

The Rectifier,semiconductor Device,u, cataloged under National Stock Number 5961-00-449-4245, is classified within Federal Supply Class 5961 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Varo Llc. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5961-00-449-4245
Primary Part Number1N4438
Item NameRectifier,semiconductor Device,u
FSC / FSG5961 / 59 — No Item Name Available
ManufacturerVaro Llc
StatusACTIVE
Terminal Type and Quantity4 TAB, SOLDER LUG
Overall Diameter0.761 INCHES NOMINAL IN
Absolute Maximum Current Rating Per Characteristic10.00 AMPERES AVERAGE FORWARD CURRENT AVERAGED OVER A FULL 60-HZ CYCLE AND 100.00 AMPERES PEAK FORWARD SURGE CURRENT
MaterialSILICON
Mounting MethodUNTHREADED HOLE(S)
Absolute Maximum Voltage Rating in Volts Per Characteristic600.0 REPETITIVE PEAK REVERSE VOLTAGE
Circuit Connection Style DesignatorBRIDGE 1 PHASE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5961-00-105-5559 INTERCHANGEABLE
Semiconductor Device,diode
5961-00-411-7614 INTERCHANGEABLE
Semiconductor Device,thyristor
Cross-Reference Index
Part NumberManufacturer
1N4438 Varo Llc (USA)
1N4438 Electronic Industries Association
1N4438 L3 Technologies, Inc. Dba Insight Technology Division Div Insight Technology Division (USA)
1N4438 Micro Quality Semiconductor Inc Sub of Microsemi Corp (USA)
RELEASE4707 Electronic Industries Association
S40-002-013 Varo Llc (USA)
Related Parts
5961-00-105-5559INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
5961-00-411-7614INTERCHANGEABLE
SEMICONDUCTOR DEVICE,THYRISTOR

Frequently Asked Questions

What is NSN 5961-00-449-4245?

NSN 5961-00-449-4245 is a Rectifier,semiconductor Device,u, manufactured by Varo Llc, classified under FSC 5961 (No Item Name Available). Status: active.

What are the part numbers for NSN 5961-00-449-4245?

NSN 5961-00-449-4245 has 6 cross-referenced part numbers: 1N4438 (Varo Llc), 1N4438 (Electronic Industries Association), 1N4438 (L3 Technologies, Inc. Dba Insight Technology Division Div Insight Technology Division), 1N4438 (Micro Quality Semiconductor Inc Sub of Microsemi Corp), RELEASE4707 (Electronic Industries Association) and 1 more.

What NSN replaces 5961-00-449-4245?

There are 2 known substitutes for 5961-00-449-4245: 5961-00-105-5559, 5961-00-411-7614. Verify interchangeability with system specifications before substitution.

What are the specifications of 1N4438?

Key specifications for 1N4438: Terminal Type and Quantity: 4 TAB, SOLDER LUG; Overall Length: 0.420 INCHES NOMINAL IN; Overall Diameter: 0.761 INCHES NOMINAL IN; Absolute Maximum Current Rating Per Characteristic: 10.00 AMPERES AVERAGE FORWARD CURRENT AVERAGED OVER A FULL 60-HZ CYCLE AND 100.00 AMPERES PEAK FORWARD SURGE CURRENT. 8 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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