AMMSZ5243A-HF Zener Diode Equivalent & Substitute Parts

Part Overview

The AMMSZ5243A-HF is a 13 V, 500 mW surface mount zener diode manufactured by Comchip Technology in SOD-123 packaging. This component is classified as an active product with AEC-Q101 automotive qualification and ROHS3 compliance. Equivalent and substitute parts are identified based on matching electrical specifications, mechanical packaging, and regulatory certifications to ensure direct functional replacement in circuit applications.

Substiute Parts

AMMSZ5243A-HF

Comchip TechnologyIn Stock: 1024AMMSZ5243A-HF Datasheet

Current PartRFQ

MMSZ5243A_R1_00001

Panjit International Inc.In Stock: 3285MMSZ5243A_R1_00001 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AMMSZ5243A-HF is determined by the following critical parameters:

Electrical Specifications:

• Zener voltage: 13 V nominal with ±2% tolerance
• Power dissipation: 500 mW maximum
• Impedance: 13 Ohms maximum
• Reverse leakage current: 1 µA @ 9.9 V
• Forward voltage: 900 mV maximum @ 10 mA

Mechanical & Environmental Requirements:

• Package type: SOD-123 surface mount
• Operating temperature range: -50°C to 150°C (TJ)
• Moisture sensitivity: MSL 1 (Unlimited)
• RoHS compliance: ROHS3 Compliant

Parts meeting all these parameters are classified as parametric equivalents and direct substitutes. The MMSZ5243A_R1_00001 from Panjit International Inc. satisfies all specified electrical and mechanical criteria.

Parameter Comparison

Engineering Selection Recommendations

The MMSZ5243A_R1_00001 manufactured by Panjit International Inc. is a direct parametric equivalent to the AMMSZ5243A-HF. Both components are active products with identical electrical specifications, package type, and environmental operating ranges. Both comply with ROHS3 regulations and feature MSL 1 moisture sensitivity classification.

Selection between these parts is based on availability, supply chain requirements, and procurement specifications. The Panjit part maintains full compatibility with circuit designs specified for the Comchip AMMSZ5243A-HF, with no circuit modifications required.

Frequently Asked Questions (FAQ)

Q: Can the MMSZ5243A_R1_00001 be used as a direct replacement for the AMMSZ5243A-HF?

A: Yes. Both components share identical zener voltage (13 V), tolerance (±2%), power rating (500 mW), impedance (13 Ohms), reverse leakage current (1 µA @ 9.9 V), operating temperature range (-50°C to 150°C), and SOD-123 package specifications. No circuit modifications are required.

Q: Are there any differences in packaging or mounting between these parts?

A: No. Both the AMMSZ5243A-HF and MMSZ5243A_R1_00001 use identical SOD-123 surface mount packaging with Tape & Reel (TR) delivery format. PCB footprints and reflow soldering profiles are identical.

Q: Do both parts meet the same compliance standards?

A: Yes. Both components are ROHS3 compliant and feature MSL 1 (Unlimited) moisture sensitivity classification. The AMMSZ5243A-HF carries AEC-Q101 automotive qualification; compliance status for the Panjit part should be verified against specific application requirements.

Q: What is the basis for substitution between these zener diodes?

A: Substitution is based on matching all critical electrical parameters: nominal zener voltage, tolerance band, maximum power dissipation, impedance, reverse leakage current, and operating temperature range. Mechanical compatibility is ensured through identical SOD-123 packaging and surface mount mounting type.

Q: Are there inventory considerations when selecting between these parts?

A: The MMSZ5243A_R1_00001 has 3226 pieces in stock compared to 967 pieces for the AMMSZ5243A-HF. Availability may influence procurement decisions based on project timelines and volume requirements.