1N712 Equivalent & Substitute Zener Diode Reference

Part Overview

The 1N712 is a Zener diode developed by Microchip Technology, offered in bulk packaging with the part number 1N712. It has a Zener voltage of 8.2 V, maximum power dissipation of 250 mW, and is housed in a DO-204AH (DO-35, Axial) through-hole package. The device is currently active but is RoHS non-compliant. Substitution may be required for supply chain flexibility, compliance with environmental regulations, or for enhanced electrical ratings.

Key Parameters

Parameter	1N712	Notes
Voltage - Zener (Nom) (Vz)	8.2 V	Nominal operating voltage
Tolerance	±10%	Zener voltage tolerance
Power - Max	250 mW	Maximum power dissipation
Impedance (Max) (Zzt)	6 Ohms	Maximum dynamic resistance
Mounting Type	Through Hole	DO-35 axial
Package / Case	DO-204AH, DO-35, Axial	Mechanical form factor
Supplier Device Package	DO-35	Manufacturer package spec
RoHS Status	RoHS non-compliant	Environmental compliance
Product Status	Active	Manufacturer lifecycle status

Substitute Part Grouping Explanation

Substitute parts are grouped strictly by matching the key functional and mechanical parameters relevant to Zener diode equivalence: voltage rating, power dissipation, impedance, tolerance, and package compatibility. All listed substitutes share:

Nominal Zener voltage (Vz) of 8.2 V
Through-hole mounting and axial DO-35 case form
Close tolerance and impedance characteristics
Active product status

Parameters not provided are not considered.

Parameter Comparison

Parameter	1N712 (Microchip Technology)	BZX79-C8V2,143 (NXP USA Inc.)
Voltage - Zener (Nom) (Vz)	8.2 V	8.2 V
Tolerance	±10%	±5%
Power - Max	250 mW	400 mW
Impedance (Max) (Zzt)	6 Ohms	15 Ohms
Mounting Type	Through Hole	Through Hole
Package / Case	DO-204AH, DO-35, Axial	DO-204AH, DO-35, Axial
Supplier Device Package	DO-35	ALF2
Product Status	Active	Active
RoHS Status	RoHS non-compliant	Not specified

Engineering Selection Recommendations

Selection between 1N712 and BZX79-C8V2,143 should consider product status and environmental compliance requirements. Both parts are listed as active. RoHS compliance is specified only for the 1N712 (non-compliant); RoHS status for the BZX79-C8V2,143 is not provided. For applications requiring RoHS compliance, review only the provided compliance data.

Frequently Asked Questions (FAQ)

Q1: On what basis are substitute Zener diodes selected?
A1: Substitutes are selected strictly on the basis of voltage rating, power rating, package form, tolerance, and impedance as provided in the technical parameters.

Q2: Are the 1N712 and BZX79-C8V2,143 interchangeable in all designs?
A2: The two components match in Zener voltage and package; differences exist in tolerance, power rating, and impedance as per the disclosed parameters. Mechanical compatibility is assured due to shared DO-35 form factor.

Q3: Is RoHS or environmental compliance assured for all substitutes?
A3: RoHS status is specified only for the 1N712 as non-compliant. The BZX79-C8V2,143 does not have RoHS compliance data provided.

Q4: What package considerations are relevant for substitution?
A4: Both products utilize a through-hole mounting with a DO-204AH, DO-35, Axial package, ensuring mechanical interchangeability as per the provided information.

Q5: Can substitutes be used without further verification?
A5: Only the parameters provided in the input are used for substitution. Compatibility is determined strictly by these given characteristics without extrapolation or assumption.

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