MM3Z36VT1 Equivalent & Substitute Parts

Part Overview

The MM3Z36VT1 is a Zener diode rated at 36 V nominal voltage with 200 mW maximum power dissipation in a surface mount SOD-323 package. Manufactured by onsemi, this component is classified as obsolete product status. Due to its obsolete designation, direct replacement with active production alternatives is necessary for new designs and ongoing procurement requirements. Substitute parts must maintain electrical equivalence across voltage regulation, power handling, and thermal characteristics while accommodating modern supply chain availability.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nom)	36	V
Tolerance	±6%	—
Power - Max	200	mW
Impedance (Max)	90	Ohms
Current - Reverse Leakage @ Vr	50	nA @ 25.2 V
Voltage - Forward (Vf) (Max) @ If	900	mV @ 10 mA
Operating Temperature Range	-65 to 150	°C
Mounting Type	Surface Mount	—
Package / Case	SC-76, SOD-323	—
RoHS Status	RoHS non-compliant	—

Substitute Part Grouping Explanation

Substitution of the MM3Z36VT1 is determined by the following critical parameters:

Electrical Equivalence Requirements:

Voltage - Zener (Nom): 36 V (exact match required)
Tolerance: ±6% or tighter (±5% acceptable)
Power - Max: 200 mW minimum (higher ratings acceptable for derating applications)
Impedance (Max): 90 Ohms or lower
Operating Temperature Range: -65°C to 150°C minimum coverage

Mechanical Compatibility:

Mounting Type: Surface Mount (required)
Package / Case: SOD-323 or equivalent footprint (1005/SOD-323F acceptable with layout verification)

Compliance & Availability:

Product Status: Active production preferred due to obsolete status of main part
RoHS Status: ROHS3 Compliant preferred for new designs
Packaging: Tape & Reel (TR) for production environments

Substitute parts are grouped into three categories: Direct manufacturer upgrade (same manufacturer, enhanced specifications), similar manufacturer alternatives (different manufacturer, equivalent electrical performance), and parametric equivalents (alternative manufacturers, matching core electrical parameters).

Parameter Comparison

Parameter	MM3Z36VT1	MM3Z36VT1G	CZRF52C36	PZU36BA,115	BZT52C36S-7-F	BZT52C36S-TP
Manufacturer	onsemi	onsemi	Comchip Technology	Nexperia USA Inc.	Diodes Incorporated	Micro Commercial Co
Voltage - Zener (Nom)	36 V	36 V	36 V	36 V	36 V	36 V
Tolerance	±6%	±6%	±5%	±5%	±6%	±6%
Power - Max	200 mW	300 mW	200 mW	320 mW	200 mW	200 mW
Impedance (Max)	90 Ω	90 Ω	90 Ω	60 Ω	90 Ω	90 Ω
Current - Reverse Leakage @ Vr	50 nA @ 25.2 V	50 nA @ 25.2 V	100 nA @ 27 V	50 nA @ 27 V	100 nA @ 25.2 V	100 nA @ 25.2 V
Voltage - Forward (Vf) (Max) @ If	900 mV @ 10 mA	900 mV @ 10 mA	900 mV @ 10 mA	1.1 V @ 100 mA	900 mV @ 10 mA	900 mV @ 10 mA
Operating Temperature Range	-65 to 150°C	-65 to 150°C	-55 to 125°C	-55 to 150°C	-65 to 150°C	-65 to 150°C
Package / Case	SC-76, SOD-323	SC-76, SOD-323	1005 (2512 Metric)	SC-76, SOD-323	SC-76, SOD-323	SC-76, SOD-323
Product Status	Obsolete	Active	Active	Active	Active	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Primary Recommendation: MM3Z36VT1G

The MM3Z36VT1G is the direct manufacturer upgrade from onsemi. This part maintains identical electrical specifications to the MM3Z36VT1 while offering enhanced power rating (300 mW vs. 200 mW), enabling improved thermal margin in existing circuit designs. The part carries active product status and ROHS3 compliance, addressing the obsolescence and regulatory limitations of the original component. Footprint compatibility is guaranteed as both parts use the SOD-323 package. This substitution requires no circuit redesign and provides the highest confidence for direct replacement.

Secondary Recommendation: BZT52C36S-7-F or BZT52C36S-TP

Both Diodes Incorporated (BZT52C36S-7-F) and Micro Commercial Co (BZT52C36S-TP) alternatives provide parametric equivalence with identical electrical specifications to the MM3Z36VT1 (36 V, 200 mW, ±6% tolerance, 90 Ω impedance, -65 to 150°C operating range). These parts are in active production with ROHS3 compliance and SOD-323 packaging. Selection between these two is determined by supply chain availability and procurement lead times.

Tertiary Recommendation: PZU36BA,115

The Nexperia PZU36BA,115 provides higher power dissipation capability (320 mW) with improved impedance characteristics (60 Ω vs. 90 Ω), resulting in superior voltage regulation performance. Operating temperature range extends to 150°C maximum. This part is suitable for applications requiring enhanced thermal performance or tighter voltage regulation. The SOD-323 package ensures mechanical compatibility. ROHS3 compliance and active status support long-term availability.

Alternative Consideration: CZRF52C36

The Comchip Technology CZRF52C36 matches the 36 V, 200 mW electrical specification with tighter tolerance (±5%). However, the 1005 package footprint differs from the SOD-323 standard, requiring PCB layout verification and potential rework of existing designs. Operating temperature range is limited to -55 to 125°C, which may not satisfy applications requiring full -65°C lower temperature operation. This part is recommended only when package size constraints necessitate the 1005 form factor.

Frequently Asked Questions (FAQ)

Q: Can MM3Z36VT1G be used as a direct drop-in replacement for MM3Z36VT1?

A: Yes. The MM3Z36VT1G is electrically and mechanically compatible with the MM3Z36VT1. Both parts share identical zener voltage (36 V), tolerance (±6%), impedance (90 Ω), forward voltage characteristics, and operating temperature range (-65 to 150°C). The SOD-323 package footprint is identical. The MM3Z36VT1G provides higher power rating (300 mW vs. 200 mW), which improves thermal margin without affecting circuit operation.

Q: What is the difference between BZT52C36S-7-F and BZT52C36S-TP?

A: Both parts are electrically identical with 36 V zener voltage, 200 mW power rating, ±6% tolerance, and 90 Ω impedance. The primary difference is manufacturer: BZT52C36S-7-F is manufactured by Diodes Incorporated, while BZT52C36S-TP is manufactured by Micro Commercial Co. Both are in active production with ROHS3 compliance and SOD-323 packaging. Selection is based on supply chain availability and procurement preferences.

Q: Why is CZRF52C36 listed as an alternative if the package is different?

A: The CZRF52C36 provides electrical equivalence (36 V, 200 mW, ±5% tolerance, 90 Ω impedance) but uses a 1005 package instead of SOD-323. This part is included as an alternative for applications where package size constraints or design modifications permit the larger 1005 footprint. Existing designs using SOD-323 would require PCB layout changes to accommodate this part.

Q: Does PZU36BA,115 provide better performance than the original MM3Z36VT1?

A: The PZU36BA,115 offers improved voltage regulation characteristics through lower impedance (60 Ω vs. 90 Ω) and higher power dissipation (320 mW vs. 200 mW). These enhancements reduce output impedance and improve transient response in voltage regulation circuits. The part maintains the same 36 V zener voltage and ±5% tolerance. For applications sensitive to voltage regulation quality, the PZU36BA,115 provides measurable performance benefits.

Q: Are all substitute parts RoHS compliant?

A: All recommended substitute parts (MM3Z36VT1G, BZT52C36S-7-F, BZT52C36S-TP, PZU36BA,115, and CZRF52C36) carry ROHS3 compliance certification. The original MM3Z36VT1 is RoHS non-compliant. This compliance upgrade is mandatory for applications subject to RoHS regulations and recommended for all new designs.

Q: What is the operating temperature limitation of CZRF52C36?

A: The CZRF52C36 operates from -55°C to 125°C, which is narrower than the MM3Z36VT1 specification of -65°C to 150°C. Applications requiring operation below -55°C or above 125°C must use alternative parts such as MM3Z36VT1G, BZT52C36S-7-F, BZT52C36S-TP, or PZU36BA,115, all of which support the full -65 to 150°C range.

Q: Can reverse leakage current differences affect circuit performance?

A: The MM3Z36VT1 specifies 50 nA reverse leakage at 25.2 V. Substitute parts show variations: MM3Z36VT1G (50 nA @ 25.2 V), BZT52C36S-7-F and BZT52C36S-TP (100 nA @ 25.2 V), PZU36BA,115 (50 nA @ 27 V), and CZRF52C36 (100 nA @ 27 V). These differences are negligible for most voltage regulation applications. High-impedance circuits or precision measurement applications should verify leakage specifications against design requirements.

Q: Is footprint compatibility guaranteed for all substitute parts?

A: Footprint compatibility is guaranteed for all parts using SOD-323 packaging: MM3Z36VT1G, PZU36BA,115, BZT52C36S-7-F, and BZT52C36S-TP. The CZRF52C36 uses a 1005 package, which requires PCB layout verification and potential rework. Consult PCB design files and component datasheets to confirm mechanical fit before procurement.

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