MM5Z13VT1G Equivalent & Substitute Parts

Part Overview

The MM5Z13VT1G is a 13 V Zener diode manufactured by onsemi, rated for 500 mW power dissipation in a surface mount SOD-523 package. This component is classified as obsolete, indicating that direct procurement from the original manufacturer may be limited or unavailable. Equivalent and substitute parts are necessary to maintain design continuity, ensure supply chain reliability, and support ongoing production requirements for applications requiring 13 V Zener regulation.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nominal)	13	V
Tolerance	±6.4%	%
Power - Maximum	500	mW
Impedance (Maximum)	30	Ohms
Current - Reverse Leakage @ Vr	100	nA @ 8 V
Voltage - Forward (Maximum) @ If	900	mV @ 10 mA
Operating Temperature Range	-65 to 150	°C
Mounting Type	Surface Mount	—
Package / Case	SOD-523	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the MM5Z13VT1G is determined by the following critical parameters:

Primary Matching Criteria:

Zener voltage: 13 V nominal
Operating temperature range: -65°C to 150°C minimum
Reverse leakage current: 100 nA @ 8 V or 10 V
Impedance (maximum): 30 Ohms or lower
Mounting type: Surface mount
Moisture sensitivity level: 1 (Unlimited)

Secondary Considerations:

Power rating: Substitutes rated at 300 mW or higher are functionally equivalent; lower power ratings (100 mW, 150 mW) are acceptable only when application power requirements do not exceed the substitute's maximum rating
Tolerance: ±6.4% or tighter tolerance is acceptable
Package compatibility: SOD-523, SOD-323, and equivalent surface mount packages are interchangeable with appropriate PCB layout modifications

Substitutes are grouped into two categories:

Category A - Direct Equivalents (Same Power Rating or Higher):

MM3Z13VT1G (300 mW, SOD-323): Lower power rating; same voltage and electrical characteristics
BZT52C13T-7 (300 mW, SOD-523): Same package; lower power rating
BZX84J-C13,115 (550 mW, SOD-323F): Higher power rating; automotive qualified

Category B - Reduced Power Rating Substitutes (100 mW - 150 mW):

BZT52C13T-TP (100 mW, SOD-523): Lowest power option; same package
CZRU52C13 (150 mW, 0603/SOD-523F): Compact package option
CZRUR52C13 (150 mW, 0603/SOD-523F): Compact package option
EDZVFHT2R13B (150 mW, EMD2): Automotive qualified; tighter tolerance

Parameter Comparison

Part Number	Manufacturer	Vz (V)	Tolerance (%)	Power (mW)	Zzt (Ohms)	Vf @ If (V @ mA)	Temp Range (°C)	Package	Status
MM5Z13VT1G	onsemi	13	±6.4	500	30	0.9 @ 10	-65 to 150	SOD-523	Obsolete
MM3Z13VT1G	onsemi	13	±6	300	30	0.9 @ 10	-65 to 150	SOD-323	Active
BZT52C13T-7	Diodes Incorporated	13	±6	300	30	0.9 @ 10	-65 to 150	SOD-523	Active
BZT52C13T-TP	Micro Commercial Co	13	±5	100	30	0.9 @ 10	-65 to 150	SOD-523	Active
BZX84J-C13,115	Nexperia USA Inc.	13	±5	550	10	1.1 @ 100	-65 to 150	SOD-323F	Active
CZRU52C13	Comchip Technology	13	±5	150	25	0.9 @ 10	-55 to 125	0603/SOD-523F	Active
CZRUR52C13	Comchip Technology	13	±5	150	25	0.9 @ 10	-55 to 125	0603/SOD-523F	Active
EDZVFHT2R13B	Rohm Semiconductor	13	±2.23	150	37	—	-55 to 150	EMD2	Active

Engineering Selection Recommendations

For Direct Replacement (Same Power Capability):

BZT52C13T-7 (Diodes Incorporated) is the primary substitute when the SOD-523 package and 300 mW power rating are acceptable. This part maintains electrical equivalence with the MM5Z13VT1G while offering active product status and RoHS3 compliance. The identical impedance specification (30 Ohms) and forward voltage characteristics ensure functional compatibility.

For Automotive Applications:

BZX84J-C13,115 (Nexperia USA Inc.) is specified for applications requiring AEC-Q101 automotive qualification. This part provides superior power handling (550 mW) and lower impedance (10 Ohms), with the trade-off of a different package (SOD-323F) and higher forward voltage specification (1.1 V @ 100 mA). This part is suitable only when automotive qualification is a design requirement.

EDZVFHT2R13B (Rohm Semiconductor) offers automotive qualification with the tightest tolerance specification (±2.23%) among all substitutes. The EMD2 package differs from the original SOD-523, requiring PCB layout verification. Operating temperature maximum is 150°C (junction temperature), matching the original specification.

For Space-Constrained Applications:

CZRU52C13 or CZRUR52C13 (Comchip Technology) provide compact 0603 package options with 150 mW power rating. These parts are suitable only when application power dissipation does not exceed 150 mW. Operating temperature range is reduced to -55°C to 125°C; verify compatibility with application requirements.

For Reduced Power Applications:

BZT52C13T-TP (Micro Commercial Co) is the lowest power option at 100 mW. This part is suitable only for applications where power dissipation is confirmed to remain below 100 mW. The SOD-523 package maintains mechanical compatibility with the original design.

Compliance and Supply Considerations:

All active substitutes listed are RoHS3 compliant and REACH unaffected. MM3Z13VT1G (onsemi) offers the advantage of being from the original manufacturer with active product status, though the SOD-323 package differs from the original SOD-523.

Frequently Asked Questions (FAQ)

Q: Can MM3Z13VT1G replace MM5Z13VT1G directly on the PCB?

A: Electrical substitution is valid; the parts share identical voltage, tolerance, impedance, and forward voltage specifications. However, the package differs: MM3Z13VT1G uses SOD-323 while MM5Z13VT1G uses SOD-523. PCB footprint modification is required. Verify that the 300 mW power rating is sufficient for your application; if the original design dissipates more than 300 mW, this substitute is not suitable.

Q: What is the difference between BZT52C13T-7 and BZT52C13T-TP?

A: Both parts are manufactured by different suppliers (Diodes Incorporated vs. Micro Commercial Co) and share the same SOD-523 package and 13 V Zener voltage. The critical difference is power rating: BZT52C13T-7 is rated for 300 mW, while BZT52C13T-TP is rated for 100 mW. Select based on your application's power dissipation requirements.

Q: Why does BZX84J-C13,115 have a higher forward voltage specification?

A: BZX84J-C13,115 specifies forward voltage at 100 mA (1.1 V @ 100 mA), while the original MM5Z13VT1G specifies it at 10 mA (0.9 V @ 10 mA). These measurements are taken at different current levels and are not directly comparable. The higher current measurement reflects the part's capability at elevated current conditions. Verify that your circuit's forward current operating point aligns with the specified test conditions.

Q: Can I use CZRU52C13 in place of MM5Z13VT1G?

A: Electrical substitution is valid for the 13 V Zener voltage, tolerance, and reverse leakage specifications. However, three limitations apply: (1) Power rating is reduced to 150 mW; confirm your application does not exceed this limit. (2) Operating temperature range is reduced to -55°C to 125°C; verify compatibility with your thermal environment. (3) Package is 0603/SOD-523F, requiring PCB footprint modification.

Q: Is EDZVFHT2R13B suitable for non-automotive applications?

A: Yes. EDZVFHT2R13B meets all electrical requirements for 13 V Zener regulation in non-automotive applications. The AEC-Q101 automotive qualification is an additional feature that does not restrict use in other applications. The tighter tolerance (±2.23%) provides improved voltage regulation accuracy compared to the original ±6.4% specification. The EMD2 package requires PCB layout verification.

Q: What is the impact of impedance differences between substitutes?

A: Impedance (Zzt) affects the Zener diode's dynamic response to load current changes. Lower impedance provides faster voltage regulation. The original MM5Z13VT1G specifies 30 Ohms maximum. BZX84J-C13,115 offers superior performance with 10 Ohms, while EDZVFHT2R13B specifies 37 Ohms (slightly higher). For most applications, these differences are negligible; however, high-frequency or high-current switching applications may benefit from the lower impedance of BZX84J-C13,115.

Q: Are all substitutes RoHS3 compliant?

A: Yes. All active substitute parts listed are RoHS3 compliant and REACH unaffected, matching the compliance status of the original MM5Z13VT1G.

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