MM5Z62V Zener Diode Equivalent & Substitute Parts

Part Overview

The MM5Z62V is a 62 V, 200 mW surface mount zener diode manufactured by onsemi in SOD-523F packaging. This component is classified as obsolete, necessitating identification of active equivalent and substitute parts for ongoing design requirements and procurement needs. Substitute parts must maintain the 62 V nominal zener voltage while accommodating variations in power dissipation, package form factor, and electrical tolerances based on application requirements.

Key Parameters

Parameter	MM5Z62V
Voltage - Zener (Nom)	62 V
Tolerance	±6%
Power - Max	200 mW
Impedance (Max)	215 Ohms
Current - Reverse Leakage @ Vr	50 nA @ 43.4 V
Operating Temperature	-55°C ~ 150°C
Mounting Type	Surface Mount
Package / Case	SOD-523F
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the MM5Z62V is determined by the following critical parameters:

Primary Matching Criteria:

Voltage - Zener (Nom): 62 V (exact match required)
Mounting Type: Surface Mount (all substitutes maintain this requirement)
Current - Reverse Leakage @ Vr: 50 nA @ 43.4 V (standard specification across all candidates)

Secondary Compatibility Factors:

Power - Max: Substitutes range from 200 mW to 550 mW; higher power ratings are acceptable for applications requiring equal or greater thermal capability
Impedance (Max): Ranges from 140 to 215 Ohms; lower impedance values indicate improved frequency response characteristics
Tolerance: Ranges from ±2% to ±6%; tighter tolerances provide enhanced voltage regulation precision
Operating Temperature: All substitutes support -55°C minimum; extended upper range to -65°C minimum available in select parts
Package / Case: Multiple form factors available (SOT-23-3, SOD-123F, SOD-523, SOD-323F); package selection depends on PCB layout constraints and thermal requirements

All substitute parts are active products with current manufacturing status, ensuring long-term availability and supply chain continuity.

Parameter Comparison

Part Number	Manufacturer	Vz (Nom)	Tolerance	Power (Max)	Impedance (Max)	Leakage @ Vr	Temp Range	Package	Status
MM5Z62V	onsemi	62 V	±6%	200 mW	215 Ω	50 nA @ 43.4 V	-55°C ~ 150°C	SOD-523F	Obsolete
BZX84C62LT1G	onsemi	62 V	±6%	225 mW	215 Ω	50 nA @ 43.4 V	-65°C ~ 150°C	SOT-23-3	Active
BZT52H-C62,115	Nexperia USA Inc.	62 V	±5%	375 mW	140 Ω	50 nA @ 43.4 V	-65°C ~ 150°C	SOD-123F	Active
BZX584C62_R1_00001	Panjit International Inc.	62 V	±5%	200 mW	150 Ω	100 nA @ 46 V	-55°C ~ 150°C	SOD-523	Active
BZX585-B62,115	Nexperia USA Inc.	62 V	±2%	300 mW	215 Ω	50 nA @ 43.4 V	-65°C ~ 150°C	SOD-523	Active
BZX585-C62,115	NXP Semiconductors	62 V	±5%	300 mW	215 Ω	50 nA @ 43.4 V	-65°C ~ 150°C	SOD-523	Active
BZX84J-C62,115	Nexperia USA Inc.	62 V	±5%	550 mW	140 Ω	50 nA @ 43.4 V	-65°C ~ 150°C	SOD-323F	Active

Engineering Selection Recommendations

Direct Replacement (Same Package): BZX584C62_R1_00001 provides the closest functional match to MM5Z62V, maintaining identical 200 mW power rating and SOD-523 package form factor. This part is manufactured by Panjit International Inc. and carries active product status with RoHS3 compliance. Operating temperature range matches the original specification (-55°C ~ 150°C). Impedance is reduced to 150 Ohms, providing improved high-frequency performance. Tolerance specification is ±5%, representing a tighter voltage regulation window compared to the original ±6%.

Higher Power Capability Substitutes: BZX585-C62,115 (NXP Semiconductors) and BZX585-B62,115 (Nexperia USA Inc.) both offer 300 mW power dissipation in SOD-523 packaging, suitable for applications requiring enhanced thermal margin. BZX585-B62,115 provides superior voltage tolerance at ±2%, with automotive-grade qualification (AEC-Q100). Both parts support extended operating temperature range to -65°C minimum.

Automotive-Qualified Alternatives: BZT52H-C62,115 (Nexperia USA Inc.) and BZX84J-C62,115 (Nexperia USA Inc.) carry AEC-Q101 automotive qualification. BZT52H-C62,115 offers 375 mW in SOD-123F packaging with 140 Ohm impedance. BZX84J-C62,115 provides maximum power capability at 550 mW in SOD-323F packaging, suitable for high-dissipation applications.

Alternative Package Option: BZX84C62LT1G (onsemi) maintains manufacturer continuity while transitioning to SOT-23-3 (TO-236) packaging. This part offers 225 mW power rating and extended temperature range to -65°C minimum, with active product status and high inventory availability.

All substitute parts maintain 62 V nominal zener voltage and 50 nA reverse leakage specification, ensuring functional compatibility with the original design intent.

Frequently Asked Questions (FAQ)

Q: Can BZX585-C62,115 directly replace MM5Z62V without circuit modification?

A: BZX585-C62,115 maintains the critical 62 V zener voltage specification and SOD-523 package form factor. The increased power rating (300 mW vs. 200 mW) and extended temperature range (-65°C to 150°C vs. -55°C to 150°C) are backward-compatible enhancements. Impedance remains at 215 Ohms, matching the original specification. Direct PCB substitution is feasible without circuit redesign.

Q: What is the significance of impedance variation across substitute parts?

A: Impedance (Zzt) affects zener diode dynamic response and voltage regulation under transient conditions. Lower impedance values (140 Ohms in BZT52H-C62,115 and BZX84J-C62,115) provide superior high-frequency performance and faster transient response. Higher impedance values (215 Ohms) maintain the original specification. Selection depends on circuit bandwidth requirements and transient suppression performance criteria.

Q: Are all substitute parts RoHS3 compliant?

A: All active substitute parts listed carry RoHS3 compliance certification. The original MM5Z62V does not specify RoHS status. All substitutes are REACH unaffected and classified under ECCN EAR99 for export control purposes.

Q: Which substitute part offers the tightest voltage tolerance?

A: BZX585-B62,115 provides ±2% voltage tolerance, representing the tightest specification among all candidates. This part is suitable for applications requiring precise voltage regulation and carries automotive-grade qualification (AEC-Q100). Standard tolerance specifications across most alternatives are ±5% to ±6%.

Q: What package considerations apply when selecting a substitute?

A: The original MM5Z62V uses SOD-523F packaging. Direct package-compatible substitutes include BZX584C62_R1_00001 (SOD-523), BZX585-B62,115 (SOD-523), and BZX585-C62,115 (SOD-523). Alternative packages include SOT-23-3 (BZX84C62LT1G), SOD-123F (BZT52H-C62,115), and SOD-323F (BZX84J-C62,115). Package selection requires PCB layout verification and thermal management assessment.

Q: Can BZX84C62LT1G be used in applications requiring SOD-523 footprint?

A: No. BZX84C62LT1G uses SOT-23-3 (TO-236) packaging, which is physically incompatible with SOD-523F PCB footprints. This part is suitable only for new designs or PCB layouts specifically designed for SOT-23-3 form factor. For existing SOD-523F layouts, select BZX584C62_R1_00001, BZX585-B62,115, or BZX585-C62,115.

Q: What is the difference between BZX585-B62,115 and BZX585-C62,115?

A: Both parts share identical 62 V zener voltage, 300 mW power rating, SOD-523 packaging, and 215 Ohm impedance. Primary differences are voltage tolerance (±2% for BZX585-B62,115 vs. ±5% for BZX585-C62,115) and automotive qualification (AEC-Q100 for BZX585-B62,115). BZX585-B62,115 is preferred for precision voltage regulation applications; BZX585-C62,115 offers broader availability with 97,075 units in stock.

Q: Are automotive-qualified parts suitable for non-automotive applications?

A: Yes. Automotive-qualified parts (BZT52H-C62,115 and BZX84J-C62,115 with AEC-Q101 qualification; BZX585-B62,115 with AEC-Q100 qualification) meet stringent reliability and performance standards that exceed general industrial requirements. These parts are fully compatible with non-automotive applications and provide enhanced reliability margins.

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