1N4584A Zener Diode Equivalent & Substitute Parts

Part Overview

The 1N4584A is a temperature-compensated zener diode manufactured by Microchip Technology, rated at 6.4 V nominal with 500 mW power dissipation capability. This through-hole component operates across an extended temperature range of -65°C to 175°C and is housed in a DO-35 (DO-204AH) axial package. The part maintains active product status with 1030 units currently in stock.

Substitute parts become necessary when the primary part number experiences supply constraints, inventory depletion, or when design requirements permit selection from qualified alternatives meeting identical electrical and mechanical specifications.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nominal)	6.4	V
Tolerance	±5	%
Power - Maximum	500	mW
Impedance (Maximum)	25	Ohms
Current - Reverse Leakage @ Vr	2	µA @ 3 V
Operating Temperature Range	-65 to 175	°C
Mounting Type	Through Hole	—
Package / Case	DO-204AH, DO-35, Axial	—

Substitute Part Grouping Explanation

Substitution eligibility for the 1N4584A is determined by strict equivalence across the following critical parameters:

Electrical Specifications:

Zener voltage (Nominal): 6.4 V
Voltage tolerance: ±5%
Maximum power dissipation: 500 mW
Maximum impedance: 25 Ohms
Reverse leakage current: 2 µA @ 3 V
Operating temperature range: -65°C to 175°C

Mechanical Specifications:

Mounting type: Through Hole
Package designation: DO-35 (DO-204AH) Axial

All substitute parts listed below satisfy these parameters without exception. Substitution is valid when circuit design requirements do not mandate specific compliance certifications or manufacturing qualifications beyond the electrical and mechanical specifications.

Parameter Comparison

Parameter	1N4584A	1N4582A	1N4582A-1	JANTX1N4583A-1
Manufacturer	Microchip Technology	Microchip Technology	Microchip Technology	MACOM Technology Solutions
Voltage - Zener (Nom)	6.4 V	6.4 V	6.4 V	6.4 V
Tolerance	±5%	±5%	±5%	±5%
Power - Max	500 mW	500 mW	500 mW	500 mW
Impedance (Max)	25 Ohms	25 Ohms	25 Ohms	25 Ohms
Current - Reverse Leakage @ Vr	2 µA @ 3 V	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	-65°C ~ 175°C
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	DO-204AH, DO-35, Axial	DO-204AH, DO-35, Axial	DO-204AH, DO-35, Axial	DO-204AH, DO-35, Axial
Product Status	Active	Active	Active	Discontinued at DiGi Electronics
Inventory (Pcs)	1030	849	1012	844

Engineering Selection Recommendations

1N4582A (Microchip Technology)

This part is electrically and mechanically identical to the 1N4584A and maintains active product status. The 1N4582A carries RoHS3 compliance certification and is rated MSL 1 (Unlimited moisture sensitivity level). Selection of this substitute is appropriate for applications where RoHS compliance is a design requirement.

1N4582A-1 (Microchip Technology)

This variant is electrically and mechanically identical to the 1N4584A and maintains active product status. The 1N4582A-1 is rated MSL 1 (Unlimited) but is classified as RoHS non-compliant. This part is suitable for applications where RoHS compliance is not mandated and where the base product number 1N4582 designation is acceptable.

JANTX1N4583A-1 (MACOM Technology Solutions)

This part is electrically and mechanically identical to the 1N4584A but carries military-grade qualification under MIL-PRF-19500/452 and is classified as RoHS non-compliant. The JANTX1N4583A-1 is discontinued at DiGi Electronics and should be selected only when military qualification is a specific design requirement and alternative sourcing channels are available. This part is rated MSL 1 (Unlimited).

Frequently Asked Questions (FAQ)

Q: Can the 1N4582A be used as a direct replacement for the 1N4584A?

A: Yes. The 1N4582A meets all electrical and mechanical specifications of the 1N4584A, including zener voltage (6.4 V), power rating (500 mW), impedance (25 Ohms maximum), reverse leakage current (2 µA @ 3 V), and operating temperature range (-65°C to 175°C). Both parts use the DO-35 through-hole package. The 1N4582A additionally carries RoHS3 compliance.

Q: What is the difference between 1N4582A and 1N4582A-1?

A: Both parts are electrically and mechanically identical and share the same base product number 1N4582. The primary difference is RoHS compliance status: the 1N4582A is RoHS3 compliant, while the 1N4582A-1 is RoHS non-compliant. Both are rated MSL 1 (Unlimited) and maintain active product status.

Q: When should the JANTX1N4583A-1 be selected?

A: The JANTX1N4583A-1 should be selected only when military-grade qualification under MIL-PRF-19500/452 is a specific design requirement. This part is discontinued at DiGi Electronics and requires alternative sourcing. All electrical and mechanical parameters are identical to the 1N4584A.

Q: Are all substitute parts available in the same DO-35 package?

A: Yes. All substitute parts listed are housed in the DO-35 (DO-204AH) axial through-hole package, ensuring mechanical compatibility with the 1N4584A in existing circuit board layouts.

Q: What is the current inventory status of substitute parts?

A: The 1N4582A has 849 units in stock, the 1N4582A-1 has 1012 units in stock, and the JANTX1N4583A-1 has 844 units in stock. The primary part 1N4584A has 1030 units in stock.

Q: Do all substitute parts operate across the same temperature range?

A: Yes. All substitute parts operate across the identical temperature range of -65°C to 175°C, ensuring thermal performance equivalence in applications requiring extended temperature operation.

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