AMMSZ5248A-HF Zener Diode Equivalent & Substitute Parts

Part Overview

The AMMSZ5248A-HF is an 18 V, 500 mW surface mount zener diode manufactured by Comchip Technology in SOD-123 packaging. This component is classified as an automotive-grade diode with AEC-Q101 qualification and is currently in active production status. The part operates across a temperature range of -50°C to 150°C and maintains ±2% voltage tolerance. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity for applications requiring 18 V zener regulation in surface mount configurations.

Substiute Parts

AMMSZ5248A-HF

Comchip TechnologyIn Stock: 874AMMSZ5248A-HF Datasheet

Current PartRFQ

MMSZ5248A-AU_R1_000A1

Panjit International Inc.In Stock: 2648MMSZ5248A-AU_R1_000A1 Datasheet

Parametric EquivalentRFQ

MMSZ5248A_R1_00001

Panjit International Inc.In Stock: 8160MMSZ5248A_R1_00001 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the AMMSZ5248A-HF are identified based on strict parametric equivalence across all critical electrical and mechanical specifications. The substitution logic is based on the following key parameters:

Electrical Specifications:

• Zener voltage: 18 V nominal
• Voltage tolerance: ±2%
• Maximum power dissipation: 500 mW
• Maximum impedance: 21 Ohms
• Reverse leakage current: 100 nA @ 14 V
• Forward voltage: 900 mV @ 10 mA

Mechanical & Environmental Specifications:

• Package type: SOD-123 surface mount
• Operating temperature range: -50°C to 150°C
• Automotive grade qualification: AEC-Q101
• RoHS3 compliance
• Moisture sensitivity level: 1 (Unlimited)

All substitute parts listed maintain identical electrical performance characteristics and mechanical compatibility, enabling direct substitution in circuit designs without modification to PCB layouts or component footprints.

Parameter Comparison

Engineering Selection Recommendations

MMSZ5248A-AU_R1_000A1 (Panjit International Inc.): This substitute part maintains full parametric equivalence with the AMMSZ5248A-HF across all specified electrical and mechanical parameters. Both components carry automotive-grade classification with AEC-Q101 qualification, ROHS3 compliance, and identical operating temperature ranges. The part is suitable for direct substitution in automotive and industrial applications requiring 18 V zener regulation.

MMSZ5248A_R1_00001 (Panjit International Inc.): This substitute part provides parametric equivalence for core zener specifications including 18 V nominal voltage, ±2% tolerance, 500 mW power rating, and SOD-123 surface mount packaging. The part maintains ROHS3 compliance and MSL 1 rating. Automotive grade and AEC-Q101 qualification are not specified for this variant; verification of application requirements is necessary if automotive certification is mandatory.

Frequently Asked Questions (FAQ)

Q: Can MMSZ5248A-AU_R1_000A1 be used as a direct replacement for AMMSZ5248A-HF?

A: Yes. Both parts are parametrically equivalent across all critical electrical specifications (18 V zener voltage, ±2% tolerance, 500 mW power, 21 Ohms impedance, 100 nA reverse leakage) and mechanical specifications (SOD-123 package, surface mount, -50°C to 150°C operating range). Both carry AEC-Q101 automotive qualification and ROHS3 compliance.

Q: What is the difference between MMSZ5248A-AU_R1_000A1 and MMSZ5248A_R1_00001?

A: Both parts share identical electrical parameters and SOD-123 packaging. The primary difference is that MMSZ5248A-AU_R1_000A1 explicitly specifies automotive grade and AEC-Q101 qualification, while MMSZ5248A_R1_00001 does not list these certifications in the provided specifications.

Q: Are there any PCB layout or footprint changes required when substituting these parts?

A: No. All three parts use identical SOD-123 surface mount packaging, requiring no changes to PCB layouts, footprints, or assembly processes.

Q: What is the moisture sensitivity level for these zener diodes?

A: All three parts carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions during storage or handling.

Q: Are all substitute parts RoHS compliant?

A: Yes. All three parts are ROHS3 compliant and suitable for applications requiring RoHS certification.

Q: What is the operating temperature range for these components?

A: All three parts operate across -50°C to 150°C (junction temperature), supporting automotive and industrial temperature requirements.