MM5Z13V Equivalent & Substitute Parts

Part Overview

The MM5Z13V is a Zener diode manufactured by onsemi, rated at 13 V nominal with 200 mW power dissipation in a surface mount SOD-523F package. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The part operates across a temperature range of -55°C to 150°C with ±6% voltage tolerance and is suitable for voltage regulation and protection applications in surface mount designs.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nom)	13	V
Tolerance	±6%	—
Power - Max	200	mW
Impedance (Max)	30	Ohms
Current - Reverse Leakage @ Vr	100	nA @ 8 V
Operating Temperature	-55 to 150	°C
Mounting Type	Surface Mount	—
Package / Case	SC-79, SOD-523F	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the MM5Z13V is determined by the following critical parameters: nominal Zener voltage (13 V), maximum power dissipation capability, package compatibility, operating temperature range, and reverse leakage characteristics. Substitute parts are grouped into two categories based on these criteria:

Direct Substitutes (Electrical Equivalence): Parts that maintain the 13 V nominal Zener voltage with compatible power ratings and package types. These parts satisfy applications where the original 200 mW rating is sufficient or where higher power ratings provide design margin.

Package-Compatible Substitutes: Parts that share the SOD-523 or SOD-523F surface mount package footprint with 13 V nominal rating, allowing direct PCB placement compatibility.

The key parameters governing substitution are:

Voltage - Zener (Nom): 13 V (primary criterion)
Power - Max: 200 mW minimum for direct replacement; higher ratings acceptable
Package / Case: SOD-523F or SOD-523 (footprint compatible)
Operating Temperature: -55°C to 150°C minimum range
Reverse Leakage: 100 nA @ 8 V or lower

Parameter Comparison

Part Number	Manufacturer	Voltage - Zener (Nom)	Tolerance	Power - Max	Impedance (Max)	Current - Reverse Leakage @ Vr	Operating Temperature	Package / Case	Product Status
MM5Z13V	onsemi	13 V	±6%	200 mW	30 Ohms	100 nA @ 8 V	-55 to 150°C	SC-79, SOD-523F	Obsolete
SZMM5Z13VT1G	onsemi	13.25 V	±6.4%	500 mW	30 Ohms	100 nA @ 8 V	-65 to 150°C	SC-79, SOD-523	Active
BZT52C13T-TP	Micro Commercial Co	13 V	±5%	100 mW	30 Ohms	100 nA @ 8 V	-65 to 150°C	SC-79, SOD-523	Active
BZX584C13_R1_00001	Panjit International Inc.	13 V	±5%	200 mW	30 Ohms	100 nA @ 8 V	-55 to 150°C	SC-79, SOD-523	Active
BZX585-B13,115	Nexperia USA Inc.	13 V	±2%	300 mW	10 Ohms	100 nA @ 8 V	-65 to 150°C	SC-79, SOD-523	Active
BZX585-B13,135	Nexperia USA Inc.	13 V	±2%	300 mW	10 Ohms	100 nA @ 8 V	-65 to 150°C	SC-79, SOD-523	Active
BZX585-C13,115	Nexperia USA Inc.	13 V	±5%	300 mW	10 Ohms	100 µA @ 8 V	-65 to 150°C	SC-79, SOD-523	Active
BZX585-C13,135	Nexperia USA Inc.	13 V	±5%	300 mW	10 Ohms	100 µA @ 8 V	-65 to 150°C	SC-79, SOD-523	Active
BZX84J-B13,115	Nexperia USA Inc.	13 V	±2%	550 mW	10 Ohms	100 nA @ 8 V	-65 to 150°C	SC-90, SOD-323F	Active

Engineering Selection Recommendations

Primary Substitute - Electrical and Mechanical Equivalence:

BZX584C13_R1_00001 (Panjit International Inc.) provides the closest functional equivalence to MM5Z13V. This part maintains identical nominal Zener voltage (13 V), matching power dissipation (200 mW), equivalent impedance (30 Ohms), and compatible operating temperature range (-55 to 150°C). The SOD-523 package is footprint-compatible with the original SOD-523F specification. Product status is active with RoHS3 compliance and REACH unaffected designation.

Secondary Substitutes - Enhanced Performance:

BZX585-B13,115 and BZX585-B13,135 (Nexperia USA Inc.) offer superior performance characteristics with tighter voltage tolerance (±2% versus ±6%), higher power rating (300 mW), and lower impedance (10 Ohms). Both parts carry automotive grade qualification (AEC-Q101) and extended operating temperature range (-65 to 150°C). These parts are suitable for applications requiring improved voltage regulation accuracy and thermal performance.

BZX585-C13,115 and BZX585-C13,135 (Nexperia USA Inc.) provide 300 mW power capability with ±5% tolerance and automotive qualification (AEC-Q100). These parts accommodate applications with moderate power dissipation requirements and are available in active production status.

Alternative with Higher Power Rating:

SZMM5Z13VT1G (onsemi) offers 500 mW power dissipation with automotive qualification (AEC-Q101) and extended temperature range (-65 to 150°C). Nominal voltage is 13.25 V with ±6.4% tolerance. This part is suitable for designs requiring increased thermal margin or higher current handling capacity.

Limited Power Application:

BZT52C13T-TP (Micro Commercial Co) is suitable only for applications where 100 mW power dissipation is sufficient. This part maintains 13 V nominal voltage with ±5% tolerance and active product status. Use is restricted to low-power regulation and protection circuits.

Package Consideration:

BZX84J-B13,115 (Nexperia USA Inc.) uses SOD-323F package (SC-90), which differs from the original SOD-523F footprint. This part is not recommended for direct PCB replacement without layout modification, despite electrical compatibility at 13 V, ±2%, and 550 mW rating.

Frequently Asked Questions (FAQ)

Q: Can BZT52C13T-TP replace MM5Z13V in all applications?

A: No. BZT52C13T-TP is rated at 100 mW maximum power dissipation, compared to MM5Z13V at 200 mW. This part is suitable only for applications where power dissipation does not exceed 100 mW. Applications requiring the full 200 mW capability require alternative substitutes.

Q: What is the difference between BZX585-B13,115 and BZX585-C13,115?

A: Both parts are manufactured by Nexperia and rated at 13 V, 300 mW in SOD-523 package. The primary difference is voltage tolerance: BZX585-B13,115 specifies ±2% tolerance with AEC-Q101 qualification, while BZX585-C13,115 specifies ±5% tolerance with AEC-Q100 qualification. BZX585-B13,115 is preferred for applications requiring tighter voltage regulation.

Q: Is SZMM5Z13VT1G a direct replacement for MM5Z13V?

A: SZMM5Z13VT1G is functionally compatible but not a direct replacement. The nominal voltage is 13.25 V (versus 13 V), and power rating is 500 mW (versus 200 mW). The part is suitable for applications where the higher voltage and power rating do not conflict with circuit requirements. Verification of circuit tolerance to 13.25 V operation is required.

Q: Why is BZX84J-B13,115 not recommended as a direct substitute?

A: BZX84J-B13,115 uses SOD-323F package (SC-90), while MM5Z13V uses SOD-523F package (SC-79). These packages have different footprints and are not interchangeable on PCB layouts without design modification. Although electrical specifications are compatible, physical placement is incompatible.

Q: What is the significance of the ±2% tolerance in BZX585-B13,115 compared to ±6% in MM5Z13V?

A: Tighter tolerance (±2%) provides more precise voltage regulation with reduced variation across the production range. Applications sensitive to voltage accuracy benefit from the improved tolerance specification. However, applications designed for ±6% tolerance operation do not require the tighter specification.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed carry RoHS3 compliance designation and REACH unaffected status, matching the environmental compliance profile of MM5Z13V.

Q: What is the operating temperature difference between MM5Z13V and substitute parts?

A: MM5Z13V operates from -55°C to 150°C. Most substitute parts extend the lower temperature limit to -65°C, providing improved cold-temperature performance. This extended range is beneficial for applications in harsh thermal environments but is not required for designs specified to -55°C minimum.

Q: Can BZX584C13_R1_00001 be used as a drop-in replacement?

A: Yes. BZX584C13_R1_00001 maintains identical electrical specifications (13 V, 200 mW, 30 Ohms impedance) and compatible operating temperature range (-55 to 150°C). The SOD-523 package is footprint-compatible with SOD-523F. This part is the recommended direct substitute for MM5Z13V.

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