2N682 Equivalent & Substitute Parts

Part Overview

The 2N682 is a standard recovery SCR (silicon-controlled rectifier) rated for 50V off-state voltage and 25A RMS on-state current in a TO-48 chassis mount stud package. Manufactured by Central Semiconductor Corp, this component is classified as obsolete, making equivalent substitutes necessary for new designs and ongoing production requirements. The obsolete status necessitates identification of active, functionally equivalent alternatives that maintain electrical and mechanical compatibility.

Key Parameters

Parameter	Value	Unit
Voltage - Off State	50	V
Voltage - Gate Trigger (Vgt) Max	2	V
Current - Gate Trigger (Igt) Max	40	mA
Voltage - On State (Vtm) Max	2	V
Current - On State (It RMS) Max	25	A
Current - Hold (Ih) Max	100	mA
Current - Off State Max	13	mA
Current - Non Rep. Surge (60Hz)	200	A
SCR Type	Standard Recovery	-
Operating Temperature Range	-65 to 125	°C
Mounting Type	Chassis, Stud Mount	-
Package / Case	TO-208AA, TO-48-3, Stud	-

Substitute Part Grouping Explanation

Substitution of the 2N682 is determined by strict equivalence across the following critical parameters:

Voltage Rating: Off-state voltage must equal 50V
Current Rating: On-state RMS current must equal or exceed 25A
Gate Characteristics: Gate trigger voltage (Vgt) and current (Igt) must not exceed specified maximums
On-State Performance: On-state voltage drop (Vtm) must not exceed 2V maximum
SCR Type: Must be standard recovery classification
Package Compatibility: Must accommodate TO-48 or equivalent TO-208AA stud mount configuration
Temperature Range: Must support -65°C to 125°C operating window

The VS-2N682 manufactured by Vishay General Semiconductor meets all substitution criteria within these parameters.

Parameter Comparison

Parameter	2N682 (Central Semiconductor)	VS-2N682 (Vishay)	Compatibility
Voltage - Off State	50 V	50 V	Equivalent
Voltage - Gate Trigger (Vgt) Max	2 V	2 V	Equivalent
Current - Gate Trigger (Igt) Max	40 mA	40 mA	Equivalent
Voltage - On State (Vtm) Max	2 V	2 V	Equivalent
Current - On State (It RMS) Max	25 A	25 A	Equivalent
Current - Hold (Ih) Max	100 mA	20 mA	Compatible (lower value)
Current - Off State Max	13 mA	6.5 mA	Compatible (lower value)
Current - Non Rep. Surge (60Hz)	200 A	150 A	Compatible (lower value)
SCR Type	Standard Recovery	Standard Recovery	Equivalent
Operating Temperature Range	-65 to 125 °C	-65 to 125 °C	Equivalent
Mounting Type	Chassis, Stud Mount	Chassis, Stud Mount	Equivalent
Package / Case	TO-208AA, TO-48-3, Stud	TO-208AA, TO-48-3, Stud	Equivalent

Engineering Selection Recommendations

The VS-2N682 is the direct manufacturer-recommended substitute for the obsolete 2N682. Selection is based on the following engineering factors:

Product Status: The 2N682 is obsolete, while the VS-2N682 maintains active product status, ensuring ongoing availability and manufacturing support.

Compliance & Certifications: The VS-2N682 is ROHS3 compliant and carries EAR99 ECCN classification, meeting current regulatory requirements. The original 2N682 is RoHS non-compliant and marked as OBSOLETE for ECCN purposes.

Electrical Equivalence: All critical electrical parameters match or exceed the original specification. Parameters where the VS-2N682 shows lower values (hold current, off-state current, surge current) represent improved performance characteristics that maintain backward compatibility.

Mechanical Compatibility: Both devices use identical mounting configurations (chassis, stud mount) and package designations (TO-208AA, TO-48-3), enabling direct physical substitution in existing designs.

Frequently Asked Questions (FAQ)

Q: Can the VS-2N682 be used as a direct replacement for the 2N682 in existing applications?

A: Yes. The VS-2N682 meets all electrical and mechanical requirements of the 2N682. Identical voltage ratings, gate characteristics, on-state current, operating temperature range, and stud mount package configuration ensure functional equivalence.

Q: What is the difference between TO-48 and TO-208AA packaging?

A: TO-48 and TO-208AA are equivalent designations for the same stud mount package used in this product category. Both refer to a three-terminal chassis mount configuration with identical mechanical and electrical interfaces.

Q: Are there any performance differences between the 2N682 and VS-2N682?

A: The VS-2N682 exhibits lower hold current (20 mA vs. 100 mA), lower off-state leakage current (6.5 mA vs. 13 mA), and lower non-repetitive surge current (150A vs. 200A). These represent improved device characteristics that maintain full backward compatibility.

Q: Why is the 2N682 obsolete?

A: The 2N682 is no longer manufactured by Central Semiconductor Corp. The VS-2N682 from Vishay General Semiconductor provides equivalent functionality and is actively produced.

Q: What compliance certifications apply to the VS-2N682?

A: The VS-2N682 is ROHS3 compliant and classified as EAR99 for export control purposes. It is REACH unaffected.

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