1N4575-1 Equivalent & Substitute Parts Reference

Part Overview

The 1N4575-1 is a Zener Diode produced by Microchip Technology, categorized under Diodes, Zener. It features a nominal Zener voltage of 6.4 V, a maximum power dissipation of 500 mW, ±5% tolerance, and is supplied in a DO-35 (DO-204AH) through-hole package. The part's active production status is important for ongoing designs and maintenance. Selection of alternative or equivalent models becomes necessary when product availability, compliance, or qualification requirements must be met, or when stock levels require consideration.

Key Parameters

Parameter	Value
Category	Diodes, Zener
Manufacturer	Microchip Technology
Voltage - Zener (Nom) (Vz)	6.4 V
Tolerance	±5%
Power - Max	500 mW
Impedance (Max) (Zzt)	50 Ohms
Current - Reverse Leakage @ Vr	2 µA @ 3 V
Operating Temperature	-65°C ~ 175°C
Mounting Type	Through Hole
Package / Case	DO-204AH, DO-35, Axial
RoHS Status	RoHS non-compliant
REACH Status	REACH Unaffected
ECCN	EAR99
HTSUS	8541.10.0050

Substitute Part Grouping Explanation

Substitution for the 1N4575-1 Zener Diode is based strictly on parametric alignment within the following allowed electrical and mechanical criteria: Zener voltage value, tolerance, maximum power dissipation, maximum impedance, reverse leakage current, operating temperature range, mounting type, and package or case type. Only parts matching all these specified parameters are grouped as equivalents or substitutes.

Parameter Comparison

Parameter	Main Part: 1N4575-1	Substitute: 1N4579A-1	Substitute: JANTX1N4579A-1
Category	Diodes, Zener	Diodes, Zener	Diodes, Zener
Manufacturer	Microchip Technology	Microchip Technology	Microchip Technology
Voltage - Zener (Nom) (Vz)	6.4 V	6.4 V	3 V
Tolerance	±5%	±5%	±5%
Power - Max	500 mW	500 mW	500 mW
Impedance (Max) (Zzt)	50 Ohms	50 Ohms	50 Ohms
Current - Reverse Leakage @ Vr	2 µA @ 3 V	2 µA @ 3 V	2 µA @ 3 V
Operating Temperature	-65°C ~ 175°C	-65°C ~ 175°C	-65°C ~ 175°C
Mounting Type	Through Hole	Through Hole	Through Hole
Package / Case	DO-204AH, DO-35, Axial	DO-204AH, DO-35, Axial	DO-204AH, DO-35, Axial
RoHS Status	RoHS non-compliant	RoHS non-compliant	RoHS non-compliant
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected
ECCN	EAR99	EAR99	EAR99
HTSUS	8541.10.0050	8541.10.0050	8541.10.0050

Engineering Selection Recommendations

RoHS non-conformance is consistent across all listed parts, with REACH status unaffected. ECCN and HTSUS remain identical. Main part 1N4575-1 is active; substitute part 1N4579A-1 is discontinued at Digi-Key. Substitute JANTX1N4579A-1 retains “active” product status with additional grade and qualification information. Selection based on compliance or inventory can be made using only these provided statuses.

Frequently Asked Questions (FAQ)

Q1: What are the key criteria for substituting the 1N4575-1 Zener diode?
A1: Substitution is determined by matching Zener voltage, tolerance, power rating, impedance, reverse leakage current, operating temperature range, mounting type, and package/case specifications.

Q2: Are all substitute diodes RoHS compliant?
A2: All listed parts are RoHS non-compliant.

Q3: Can substitute parts be used in the same PCB footprint?
A3: All specified substitutes use the DO-204AH, DO-35, Axial through-hole package and are mechanically compatible.

Q4: How does product status affect selection?
A4: Main part 1N4575-1 and substitute JANTX1N4579A-1 are active. Substitute 1N4579A-1 is discontinued at Digi-Key.

Q5: Are qualifications and grading provided for substitute parts?
A5: JANTX1N4579A-1 provides military grade and MIL-PRF-19500/452 qualification. Other parts do not specify qualification.

Q6: Is substitute 3 V Zener (JANTX1N4579A-1) functionally identical to the main 6.4 V Zener?
A6: Nominal Zener voltage differs; refer only to parameters provided for compatibility.

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