Equivalent & Substitute Parts for Microchip Technology 1N746 Zener Diode

Part Overview

The Microchip Technology 1N746 is a Zener diode categorized under Diodes, Zener, intended for voltage regulation applications. It features a nominal Zener voltage of 3.3 V, maximum power dissipation of 500 mW, ±10% tolerance, and is packaged in DO-35 (DO-204AH) axial through-hole form. The product status is Active. Seeking alternative models may be necessary to address supply chain constraints, ensure specification compliance, or meet higher qualification standards.

Substiute Parts

1N746

Microchip TechnologyIn Stock: 9651N746 Datasheet

Current PartRFQ

JANTX1N746A-1

Microchip TechnologyIn Stock: 1185JANTX1N746A-1 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitutes are identified strictly by matching key electrical and mechanical parameters relevant for Zener diode selection. These include nominal Zener voltage (Vz), tolerance, maximum power dissipation, impedance (Zzt), reverse leakage current, forward voltage, operating temperature range, mounting type, and package/case. Compliance and product status parameters (e.g., RoHS, REACH, qualification grade) are considered for application-specific requirements but do not affect fundamental substitution capability.

Key substitution parameters:

• Voltage - Zener (Nom) (Vz)
• Tolerance
• Power - Max
• Impedance (Max) (Zzt)
• Current - Reverse Leakage @ Vr
• Voltage - Forward (Vf) (Max) @ If
• Operating Temperature
• Mounting Type
• Package / Case

Parameter Comparison

Engineering Selection Recommendations

Selection between 1N746 and JANTX1N746A-1 can be based on product status, regulatory compliance, and available qualifications. Both parts are Active and RoHS non-compliant, suitable for designs not constrained by RoHS requirements. The JANTX1N746A-1 provides military-grade qualification (MIL-PRF-19500/127) and tighter ±5% tolerance, which may be relevant in precision or defense applications. Both are REACH Unaffected and share identical mechanical and most electrical parameters.

Frequently Asked Questions (FAQ)

Q1: What are the essential criteria for selecting a substitute for the 1N746 Zener diode?
Substitution must be based on matching Zener voltage, tolerance, power rating, impedance, reverse leakage current, forward voltage, operating temperature, mounting style, and package/case.

Q2: Are both 1N746 and JANTX1N746A-1 suitable for through-hole PCB assembly?
Yes, both are specified for through-hole mounting in the DO-35 (DO-204AH, Axial) package.

Q3: Is there a difference in regulatory compliance between the parts?
Both parts are RoHS non-compliant and REACH Unaffected. Additional military qualification is present in JANTX1N746A-1.

Q4: How does tolerance affect part interchangeability?
JANTX1N746A-1 offers a tighter ±5% tolerance compared to 1N746's ±10%. Both remain within common substitution standards for Zener diodes unless a specific tolerance is required.

Q5: Are there any differences in electrical performance that impact substitution?
Nominal Zener voltage, power rating, impedance, and forward voltage are identical. JANTX1N746A-1 features lower reverse leakage current, which is compatible with 1N746's specifications.

Q6: What should be considered regarding part status and inventory?
Both components are listed as Active and available. Either part can be selected if sourcing requirements and electrical/mechanical compatibility are met.