BZT52C36S-TP Equivalent & Substitute Parts

Part Overview

The BZT52C36S-TP is a 36 V Zener diode rated at 200 mW with ±6% tolerance, manufactured by Micro Commercial Co in SOD-323 surface mount packaging. This component is classified as Active and maintains full RoHS3 compliance. Zener diodes of this specification are used in voltage regulation, overvoltage protection, and reference circuits where precise voltage clamping at 36 V is required. Equivalent and substitute parts are identified based on matching nominal Zener voltage, compatible package types, and electrical performance within acceptable operating parameters.

Key Parameters

Parameter	BZT52C36S-TP
Voltage - Zener (Nom) (Vz)	36 V
Tolerance	±6%
Power - Max	200 mW
Impedance (Max) (Zzt)	90 Ohms
Current - Reverse Leakage @ Vr	100 nA @ 25.2 V
Voltage - Forward (Vf) (Max) @ If	900 mV @ 10 mA
Operating Temperature	-65°C ~ 150°C
Mounting Type	Surface Mount
Package / Case	SC-76, SOD-323
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the BZT52C36S-TP is determined by the following critical parameters:

Primary Matching Criteria:

Nominal Zener voltage of 36 V
Surface mount technology with compatible package footprints (SOD-323, SOD-323F, or SOD-123)
Operating temperature range of -65°C to 150°C minimum
RoHS3 compliance and MSL rating of 1

Secondary Compatibility Factors:

Power dissipation rating equal to or greater than 200 mW
Impedance (Zzt) and reverse leakage characteristics within acceptable ranges for the application
Forward voltage characteristics suitable for circuit operation

Substitute parts are grouped into three categories based on package type and power rating:

Category 1: Direct SOD-323 Equivalents (200 mW) Parts with identical 200 mW power rating and SOD-323 packaging maintain pin-for-pin compatibility with the main part.

Category 2: Enhanced Performance SOD-323/SOD-323F (300–550 mW) Parts with higher power ratings in SOD-323 or SOD-323F packages provide improved thermal performance and can be used in applications requiring greater power dissipation margin.

Category 3: Alternative Package SOD-123 (200 mW) Parts in SOD-123 packaging offer space-constrained alternatives with equivalent electrical performance but different footprint geometry.

Parameter Comparison

Part Number	Manufacturer	Vz (Nom)	Tolerance	Power - Max	Zzt (Max)	Vf (Max) @ If	Package	Operating Temp	RoHS Status
BZT52C36S-TP	Micro Commercial Co	36 V	±6%	200 mW	90 Ohms	900 mV @ 10 mA	SOD-323	-65°C ~ 150°C	ROHS3
MM3Z36VT1G	onsemi	36 V	±6%	300 mW	90 Ohms	900 mV @ 10 mA	SOD-323	-65°C ~ 150°C	ROHS3
BZX84J-B36,115	Nexperia USA Inc.	36 V	±2%	550 mW	60 Ohms	1.1 V @ 100 mA	SOD-323F	-65°C ~ 150°C	ROHS3
BZX84J-C36,115	Nexperia USA Inc.	36 V	±5%	550 mW	60 Ohms	1.1 V @ 100 mA	SOD-323F	-65°C ~ 150°C	ROHS3
DDZ9715S-7	Diodes Incorporated	36 V	±5%	200 mW	—	900 mV @ 10 mA	SOD-323	-65°C ~ 150°C	ROHS3
MM3Z36VB	Fairchild Semiconductor	36 V	±2%	200 mW	84 Ohms	1 V @ 10 mA	SOD-323F	-65°C ~ 150°C	ROHS3
MM3Z36VC	Fairchild Semiconductor	36 V	±5%	200 mW	84 Ohms	1 V @ 10 mA	SOD-323F	-65°C ~ 150°C	ROHS3
MMSZ5258BS-7-F	Diodes Incorporated	36 V	±5%	200 mW	70 Ohms	900 mV @ 10 mA	SOD-123	-65°C ~ 150°C	ROHS3
PZU36B,115	Nexperia USA Inc.	36 V	±5%	310 mW	60 Ohms	1.1 V @ 100 mA	SOD-323F	-65°C ~ 150°C	ROHS3
PZU36BA,115	Nexperia USA Inc.	36 V	±5%	320 mW	60 Ohms	1.1 V @ 100 mA	SOD-323	-55°C ~ 150°C	ROHS3
SZMM3Z36VT1G	onsemi	36 V	±5%	300 mW	90 Ohms	900 mV @ 10 mA	SOD-323	-65°C ~ 150°C	ROHS3

Engineering Selection Recommendations

Direct Substitution (Pin-Compatible, SOD-323 Package):

DDZ9715S-7 (Diodes Incorporated) and SZMM3Z36VT1G (onsemi) are direct substitutes for the BZT52C36S-TP. Both maintain the SOD-323 package footprint, 36 V nominal Zener voltage, 200 mW power rating, and -65°C to 150°C operating temperature range. All three parts are RoHS3 compliant with MSL rating of 1. DDZ9715S-7 matches the ±5% tolerance specification, while SZMM3Z36VT1G carries ±5% tolerance with automotive-grade AEC-Q101 qualification.

Enhanced Performance Substitution (Higher Power Rating):

MM3Z36VT1G (onsemi) provides 300 mW power dissipation in SOD-323 packaging with matching electrical characteristics and automotive qualification (AEC-Q101). This part is suitable for applications requiring improved thermal margin while maintaining identical package footprint.

PZU36B,115 and PZU36BA,115 (Nexperia USA Inc.) offer 310 mW and 320 mW power ratings respectively in SOD-323F packaging. PZU36BA,115 maintains the SOD-323 footprint with 320 mW rating and automotive qualification (AEC-Q100). These parts provide enhanced power handling with tighter impedance control (60 Ohms vs. 90 Ohms).

BZX84J-B36,115 and BZX84J-C36,115 (Nexperia USA Inc.) deliver 550 mW power dissipation in SOD-323F packaging with automotive qualification (AEC-Q101). BZX84J-B36,115 offers ±2% tolerance with improved impedance characteristics (60 Ohms).

Alternative Package Substitution (SOD-123):

MMSZ5258BS-7-F (Diodes Incorporated) provides equivalent 200 mW performance in SOD-123 packaging. This part is suitable for space-constrained applications where the smaller SOD-123 footprint is required. Electrical characteristics remain compatible with the main part specification.

Tolerance and Compliance Considerations:

All substitute parts maintain RoHS3 compliance and MSL rating of 1. Parts with tighter tolerance specifications (±2%) such as BZX84J-B36,115 and MM3Z36VB are available for applications requiring improved voltage accuracy. Automotive-qualified parts (AEC-Q100 or AEC-Q101) are available from onsemi and Nexperia for applications requiring automotive-grade reliability.

Frequently Asked Questions (FAQ)

Q: Can I use MM3Z36VT1G as a direct replacement for BZT52C36S-TP?

A: Yes. MM3Z36VT1G is a direct substitute with identical SOD-323 package footprint, 36 V nominal Zener voltage, and -65°C to 150°C operating temperature range. The 300 mW power rating exceeds the 200 mW requirement, providing additional thermal margin. Both parts are RoHS3 compliant with MSL rating of 1.

Q: What is the difference between SOD-323 and SOD-323F packages?

A: SOD-323 and SOD-323F are both surface mount packages with identical electrical performance and similar footprints. SOD-323F is a variant designation used by some manufacturers. Parts in either package are mechanically and electrically compatible for most applications, though PCB layout may require minor adjustments due to subtle dimensional differences.

Q: Can I use a higher power-rated Zener diode as a substitute?

A: Yes. Zener diodes with power ratings equal to or greater than 200 mW can be used as substitutes. Higher power ratings provide improved thermal performance and allow greater current handling without exceeding junction temperature limits. Electrical characteristics (Zener voltage, tolerance, impedance) remain the primary selection criteria.

Q: Are all substitute parts automotive-qualified?

A: Not all. SZMM3Z36VT1G, BZX84J-B36,115, BZX84J-C36,115, and PZU36B,115 carry automotive qualifications (AEC-Q101 or AEC-Q100). Parts without automotive qualification are suitable for general industrial and consumer applications. Verify automotive qualification requirements for your specific application.

Q: What does ±6% tolerance mean for the Zener voltage?

A: ±6% tolerance indicates that the actual Zener voltage will fall within 6% of the nominal 36 V specification. This means the voltage can range from 33.84 V to 38.16 V. Substitute parts with tighter tolerances (±2% or ±5%) provide improved voltage accuracy for precision applications.

Q: Can I use MMSZ5258BS-7-F in place of BZT52C36S-TP?

A: MMSZ5258BS-7-F is functionally equivalent with 36 V nominal Zener voltage and 200 mW power rating. However, it uses SOD-123 packaging instead of SOD-323. This requires a different PCB footprint and cannot be used as a direct pin-for-pin replacement. Use this part only if your circuit board layout accommodates SOD-123 package geometry.

Q: What is the significance of impedance (Zzt) in Zener diode selection?

A: Impedance (Zzt) affects the Zener diode's dynamic response and voltage regulation quality. Lower impedance values (60 Ohms) provide better voltage stability and faster response to load changes compared to higher impedance values (90 Ohms). For precision voltage regulation applications, parts with lower impedance are preferred.

Q: Are all listed substitute parts in stock?

A: Inventory availability is subject to change. Refer to current supplier inventory data for real-time availability of specific part numbers and quantities.

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