AMMSZ5254A-HF Zener Diode Equivalent & Substitute Parts

Part Overview

The AMMSZ5254A-HF is a 27 V, 500 mW Zener diode manufactured by Comchip Technology in SOD-123 surface mount packaging. This component is classified as an active product with AEC-Q101 automotive qualification and ROHS3 compliance. Zener diodes of this specification are used in voltage regulation, overvoltage protection, and reference voltage applications in electronic circuits. Substitute parts are identified to provide alternative sourcing options when the primary manufacturer part is unavailable or when supply chain optimization is required.

Substiute Parts

AMMSZ5254A-HF

Comchip TechnologyIn Stock: 1141AMMSZ5254A-HF Datasheet

Current PartRFQ

MMSZ5254A_R1_00001

Panjit International Inc.In Stock: 12520MMSZ5254A_R1_00001 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the AMMSZ5254A-HF are identified based on electrical and mechanical parameter equivalence. The substitution criteria are strictly limited to the following parameters:

• Zener voltage (Nominal): 27 V
• Tolerance: ±2%
• Maximum power dissipation: 500 mW
• Maximum impedance: 41 Ohms
• Reverse leakage current: 100 nA @ 21 V
• Forward voltage: 900 mV @ 10 mA
• Operating temperature range: -50°C to 150°C
• Package type: SOD-123 surface mount
• RoHS compliance: ROHS3 Compliant
• Moisture sensitivity level: 1 (Unlimited)

Parts meeting all these electrical and mechanical specifications are classified as parametric equivalents and direct substitutes. The MMSZ5254A_R1_00001 from Panjit International Inc. satisfies all substitution criteria.

Parameter Comparison

Engineering Selection Recommendations

Both the AMMSZ5254A-HF and MMSZ5254A_R1_00001 are active products with identical electrical specifications and mechanical packaging. Selection between these parts is based on the following factors:

AMMSZ5254A-HF (Comchip Technology): This part carries AEC-Q101 automotive qualification, which certifies compliance with automotive industry reliability and quality standards. Current inventory is 1053 pieces.

MMSZ5254A_R1_00001 (Panjit International Inc.): This part meets all electrical and mechanical equivalence criteria with ROHS3 compliance and REACH unaffected status. Current inventory is 12500 pieces, providing greater availability.

Both parts are suitable for applications requiring a 27 V, 500 mW Zener diode in SOD-123 packaging. Selection should be based on supply chain requirements, inventory availability, and specific application qualification needs.

Frequently Asked Questions (FAQ)

Q: Can MMSZ5254A_R1_00001 be used as a direct replacement for AMMSZ5254A-HF?

A: Yes. The MMSZ5254A_R1_00001 meets all electrical and mechanical specifications of the AMMSZ5254A-HF, including zener voltage, power rating, impedance, leakage current, operating temperature range, and SOD-123 packaging. Both parts are ROHS3 compliant with MSL 1 rating.

Q: What are the critical parameters for substitution?

A: The critical parameters are: 27 V nominal zener voltage with ±2% tolerance, 500 mW maximum power dissipation, 41 Ohms maximum impedance, 100 nA reverse leakage current at 21 V, and SOD-123 surface mount package. All substitute parts must match these specifications exactly.

Q: Are there differences in automotive qualification between these parts?

A: The AMMSZ5254A-HF carries AEC-Q101 automotive qualification. The MMSZ5254A_R1_00001 does not list AEC-Q101 qualification in the provided specifications. Applications requiring automotive qualification should specify the AMMSZ5254A-HF.

Q: What is the difference in available inventory?

A: AMMSZ5254A-HF has 1053 pieces in stock, while MMSZ5254A_R1_00001 has 12500 pieces available. The Panjit part offers significantly higher inventory availability for high-volume requirements.

Q: Are both parts RoHS compliant?

A: Yes. Both AMMSZ5254A-HF and MMSZ5254A_R1_00001 are ROHS3 compliant. The Panjit part additionally specifies REACH unaffected status.

Q: Can these parts be used interchangeably in PCB designs?

A: Yes. Both parts use identical SOD-123 surface mount packaging with the same pin configuration, footprint, and soldering requirements. No PCB design modifications are required for substitution.