AMMSZ5261A-HF Zener Diode Equivalent & Substitute Parts

Part Overview

The AMMSZ5261A-HF is a surface mount silicon zener diode manufactured by Comchip Technology, rated at 47 V nominal zener voltage with 500 mW maximum power dissipation. This component operates across the automotive temperature range (-50°C to 150°C) and carries AEC-Q101 qualification, making it suitable for automotive and industrial applications requiring voltage regulation and transient protection.

The part is currently in active production status with 938 units in stock. Equivalent substitute parts are identified based on matching electrical specifications, mechanical packaging, and compliance certifications to ensure direct functional replacement in circuit designs.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nom)	47	V
Tolerance	±2%	%
Power - Max	500	mW
Impedance (Max)	105	Ohms
Current - Reverse Leakage @ Vr	100	nA @ 36 V
Voltage - Forward (Max) @ If	900	mV @ 10 mA
Operating Temperature Range	-50 to 150	°C
Package / Case	SOD-123
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the AMMSZ5261A-HF are qualified based on the following critical parameters that determine functional equivalence:

Electrical Specifications:

Zener voltage: 47 V nominal
Tolerance: ±2%
Maximum power dissipation: 500 mW
Impedance (maximum): 105 Ohms
Reverse leakage current: 100 nA @ 36 V
Forward voltage: 900 mV @ 10 mA

Mechanical & Environmental Specifications:

Package type: SOD-123 surface mount
Operating temperature range: -50°C to 150°C
Moisture sensitivity level: 1 (Unlimited)

Compliance & Certification:

RoHS3 compliance
ECCN classification: EAR99
HTSUS code: 8541.10.0050

The MMSZ5261A_R1_00001 manufactured by Panjit International Inc. meets all specified electrical, mechanical, and compliance parameters, establishing it as a direct parametric equivalent for the AMMSZ5261A-HF.

Parameter Comparison

Parameter	AMMSZ5261A-HF (Comchip)	MMSZ5261A_R1_00001 (Panjit)	Match
Voltage - Zener (Nom)	47 V	47 V	✓
Tolerance	±2%	±2%	✓
Power - Max	500 mW	500 mW	✓
Impedance (Max)	105 Ohms	105 Ohms	✓
Current - Reverse Leakage @ Vr	100 nA @ 36 V	100 nA @ 36 V	✓
Operating Temperature Range	-50°C to 150°C	-50°C to 150°C	✓
Package / Case	SOD-123	SOD-123	✓
Mounting Type	Surface Mount	Surface Mount	✓
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	✓
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	✓
Product Status	Active	Active	✓

Engineering Selection Recommendations

The MMSZ5261A_R1_00001 from Panjit International Inc. is a direct parametric equivalent to the AMMSZ5261A-HF. Both components share identical electrical specifications, mechanical packaging, and compliance certifications. Selection between these parts is based on availability, supply chain considerations, and procurement requirements.

Both parts maintain active production status and carry ROHS3 compliance certification. The MMSZ5261A_R1_00001 currently has higher inventory availability (3939 units) compared to the AMMSZ5261A-HF (938 units), which may influence procurement decisions for high-volume applications.

The SOD-123 surface mount package and identical thermal operating range (-50°C to 150°C) ensure compatibility with existing PCB layouts and thermal management designs. No circuit redesign or thermal re-analysis is required when substituting between these parts.

Frequently Asked Questions (FAQ)

Q: Can the MMSZ5261A_R1_00001 be used as a direct replacement for the AMMSZ5261A-HF?

A: Yes. The MMSZ5261A_R1_00001 meets all electrical, mechanical, and compliance specifications of the AMMSZ5261A-HF. Both components are rated at 47 V nominal zener voltage, 500 mW maximum power, ±2% tolerance, and packaged in SOD-123 surface mount configuration. No circuit modifications are required.

Q: Are there any differences in the operating temperature range between these parts?

A: No. Both the AMMSZ5261A-HF and MMSZ5261A_R1_00001 operate across the identical temperature range of -50°C to 150°C (junction temperature).

Q: Do both parts have the same moisture sensitivity rating?

A: Yes. Both components carry Moisture Sensitivity Level 1 (Unlimited), indicating no moisture-related handling restrictions during storage, transport, or assembly.

Q: Is the SOD-123 package identical for both parts?

A: Yes. Both parts use the SOD-123 surface mount package with identical mechanical dimensions and PCB footprint requirements. No layout modifications are necessary when substituting between these components.

Q: Are both parts RoHS compliant?

A: Yes. Both the AMMSZ5261A-HF and MMSZ5261A_R1_00001 are ROHS3 compliant, meeting current environmental and hazardous substance restrictions.

Q: What is the impedance specification for these zener diodes?

A: Both parts specify a maximum impedance (Zzt) of 105 Ohms, which defines the dynamic resistance of the zener diode in the breakdown region.

Q: Are there any differences in reverse leakage current specifications?

A: No. Both components specify identical reverse leakage current of 100 nA measured at 36 V reverse bias.

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