MMSZ4701-TP Zener Diode Equivalent & Substitute Parts

Part Overview

The MMSZ4701-TP is a 14 V, 500 mW Zener diode manufactured by Micro Commercial Co in SOD-123 surface mount packaging. This component is designed for voltage regulation and protection applications requiring precise 14 V reference voltage with ±5% tolerance. The part maintains Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified based on matching electrical specifications and mechanical compatibility to ensure functional equivalence in circuit applications.

Substiute Parts

MMSZ4701-TP

Micro Commercial CoIn Stock: 5560MMSZ4701-TP Datasheet

Current PartRFQ

MMSZ4701T1G

onsemiIn Stock: 38333MMSZ4701T1G Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MMSZ4701-TP is determined by the following critical parameters:

Electrical Equivalence Requirements:

• Zener voltage (Nominal): 14 V
• Tolerance: ±5%
• Power dissipation capability: 500 mW
• Reverse leakage current: 50 nA @ 10.6 V
• Forward voltage: 950 mV @ 10 mA (maximum)
• Operating temperature range: -55°C to 150°C

Mechanical Compatibility Requirements:

• Package type: SOD-123 surface mount
• Mounting configuration: Surface mount

Compliance Requirements:

• RoHS3 compliance
• Moisture sensitivity level: 1 (Unlimited)

The MMSZ4701T1G manufactured by onsemi meets all electrical and mechanical specifications for direct substitution. Both parts share identical nominal zener voltage, tolerance, power rating, reverse leakage characteristics, and operating temperature range. The SOD-123 package ensures mechanical and thermal compatibility. Packaging format differs (Tape & Reel versus Cut Tape & Digi-Reel), which does not affect functional performance in circuit applications.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection: MMSZ4701-TP

The MMSZ4701-TP remains the primary component choice when available. It is manufactured by Micro Commercial Co, maintains Active product status, and carries full RoHS3 compliance with MSL 1 rating. Current inventory of 5509 pieces supports immediate procurement for production requirements.

Approved Substitute: MMSZ4701T1G

The MMSZ4701T1G manufactured by onsemi is a qualified direct substitute. This component matches all critical electrical parameters including 14 V nominal zener voltage, ±5% tolerance, 500 mW power rating, and identical reverse leakage specifications. The forward voltage specification of 900 mV @ 10 mA is superior to the 950 mV maximum of the primary part, providing enhanced performance margin. Both parts share SOD-123 packaging and identical operating temperature range (-55°C to 150°C). RoHS3 compliance and MSL 1 rating are maintained. Higher inventory availability (38282 pieces) supports supply chain continuity.

Compliance Verification

Both parts maintain ROHS3 compliance, REACH Unaffected status, and EAR99 export classification. No additional compliance verification is required for substitution.

Frequently Asked Questions (FAQ)

Q: Can MMSZ4701T1G replace MMSZ4701-TP in existing designs?

A: Yes. The MMSZ4701T1G is a direct electrical and mechanical substitute. Both components share identical 14 V nominal zener voltage, ±5% tolerance, 500 mW power rating, SOD-123 package, and operating temperature range. The forward voltage of the onsemi part (900 mV @ 10 mA) is lower than the Micro Commercial Co specification (950 mV @ 10 mA), which represents improved performance characteristics.

Q: Are there packaging differences between these parts?

A: Yes. The MMSZ4701-TP is supplied in Tape & Reel (TR) format, while the MMSZ4701T1G is supplied in Cut Tape (CT) and Digi-Reel format. These packaging differences do not affect electrical performance or circuit functionality. Selection between packaging formats depends on assembly process requirements and procurement volume.

Q: Do both parts meet the same compliance standards?

A: Yes. Both MMSZ4701-TP and MMSZ4701T1G are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating. Both carry REACH Unaffected status and EAR99 export classification. No additional compliance documentation is required for substitution.

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

A: Both parts operate across -55°C to 150°C junction temperature range, supporting applications requiring extended temperature performance.

Q: Are the reverse leakage characteristics identical?

A: Yes. Both components specify 50 nA reverse leakage current at 10.6 V, ensuring equivalent voltage regulation stability and circuit performance.

Q: Can these parts be used interchangeably on the same PCB assembly?

A: Yes. Both components use SOD-123 surface mount packaging with identical pinout and footprint. PCB designs require no modification for substitution.