1N4680-TP Zener Diode Equivalent & Substitute Parts

Part Overview

The 1N4680-TP is a through-hole zener diode rated at 2.2 V nominal with 500 mW power dissipation capability, packaged in the DO-35 axial configuration. This component is classified as obsolete, indicating discontinued production by the original manufacturer, Micro Commercial Co. Identification of equivalent and substitute parts is necessary to maintain design continuity and ensure component availability for repair, maintenance, and new production applications requiring this specific electrical and mechanical specification.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nom)	2.2	V
Tolerance	±5%	%
Power - Max	500	mW
Current - Reverse Leakage @ Vr	5	µA @ 1 V
Voltage - Forward (Vf) (Max) @ If	1.5	V @ 100 mA
Operating Temperature	200	°C (TJ)
Mounting Type	Through Hole	-
Package / Case	DO-35, Axial	-
RoHS Status	ROHS3 Compliant	-

Substitute Part Grouping Explanation

Substitution of the 1N4680-TP is determined by strict equivalence across the following critical parameters:

Electrical Specifications:

Zener voltage nominal rating: 2.2 V
Voltage tolerance: ±5%
Maximum power dissipation: 500 mW
Forward voltage drop: 1.5 V maximum at 100 mA
Reverse leakage current: specification range at 1 V

Mechanical & Package Requirements:

Mounting configuration: Through Hole
Package type: DO-35 axial
Physical form factor: Axial lead configuration

Compliance & Certification:

RoHS3 compliance status
ECCN and HTSUS classifications

The substitute part 1N4680 TR PBFREE from Central Semiconductor Corp maintains electrical equivalence across all specified parameters while offering active product status and extended operating temperature range. The packaging designation (Tape & Reel) represents a distribution format difference only and does not affect functional compatibility in through-hole applications.

Parameter Comparison

Parameter	1N4680-TP (Micro Commercial Co)	1N4680 TR PBFREE (Central Semiconductor Corp)	Match Status
Voltage - Zener (Nom)	2.2 V	2.2 V	Equivalent
Tolerance	±5%	±5%	Equivalent
Power - Max	500 mW	500 mW	Equivalent
Current - Reverse Leakage @ Vr	5 µA @ 1 V	4 µA @ 1 V	Compatible (Lower leakage)
Voltage - Forward (Vf) (Max) @ If	1.5 V @ 100 mA	1.5 V @ 100 mA	Equivalent
Operating Temperature	200°C (TJ)	-65°C ~ 200°C (TJ)	Compatible (Extended range)
Mounting Type	Through Hole	Through Hole	Equivalent
Package / Case	DO-35, Axial	DO-35, Axial	Equivalent
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Equivalent
Product Status	Obsolete	Active	Substitute is active

Engineering Selection Recommendations

The 1N4680 TR PBFREE from Central Semiconductor Corp is a direct functional equivalent for the obsolete 1N4680-TP. Selection of this substitute part is supported by the following factors:

Electrical Equivalence: All critical electrical parameters match the original specification, including zener voltage, power rating, forward voltage, and tolerance band. The reverse leakage current of the substitute (4 µA @ 1 V) is lower than the original specification maximum (5 µA @ 1 V), representing improved performance characteristics.

Mechanical Compatibility: Both parts utilize identical DO-35 axial packaging and through-hole mounting configuration, ensuring direct physical compatibility in existing PCB layouts and assembly processes.

Compliance Status: The substitute part maintains ROHS3 compliance and carries REACH Unaffected designation, meeting current regulatory requirements. Both parts share identical ECCN and HTSUS classifications.

Product Availability: The substitute part maintains active product status with current inventory availability, addressing the obsolescence of the original component.

Operating Temperature: The substitute part extends the operating temperature range to -65°C ~ 200°C, providing enhanced thermal performance capability compared to the original specification of 200°C maximum.

Frequently Asked Questions (FAQ)

Q: Can the 1N4680 TR PBFREE be used as a direct replacement for the 1N4680-TP in existing designs?

A: Yes. The substitute part maintains electrical equivalence across all specified parameters including zener voltage (2.2 V), power rating (500 mW), tolerance (±5%), and forward voltage characteristics. Physical compatibility is confirmed through identical DO-35 axial packaging and through-hole mounting configuration.

Q: What does the "TR PBFREE" designation indicate?

A: "TR" indicates Tape & Reel packaging format, a distribution and handling specification. "PBFREE" indicates lead-free composition. These designations do not affect functional performance or electrical characteristics. The component remains electrically and mechanically equivalent for through-hole circuit applications.

Q: Are there differences in reverse leakage current between the original and substitute parts?

A: The substitute part specifies 4 µA @ 1 V reverse leakage current compared to the original specification of 5 µA @ 1 V. This represents lower leakage, which is compatible with the original specification and does not introduce functional incompatibility.

Q: Does the extended operating temperature range of the substitute part affect compatibility?

A: No. The substitute part operating temperature range of -65°C ~ 200°C encompasses the original specification maximum of 200°C. Extended temperature capability does not create incompatibility and may provide enhanced performance margin in temperature-sensitive applications.

Q: Are both parts RoHS compliant?

A: Yes. Both the original 1N4680-TP and substitute 1N4680 TR PBFREE are ROHS3 compliant, meeting current environmental and regulatory requirements.

Q: What is the significance of the product status difference (Obsolete vs. Active)?

A: The original part is classified as obsolete, indicating discontinued production. The substitute part maintains active status with current manufacturing and inventory availability, ensuring long-term component sourcing capability for new production and maintenance applications.

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