BZT52B36-TP Equivalent & Substitute Parts

Part Overview

The BZT52B36-TP is a 36 V Zener diode manufactured by Micro Commercial Co, rated for 410 mW maximum power dissipation in a surface mount SOD-123 package. 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 voltage circuits where precise 36 V regulation is required.

Substitute parts become necessary when the primary part experiences extended lead times, inventory constraints, or when design flexibility permits selection from multiple qualified sources. The parts listed below maintain electrical compatibility within defined parameter tolerances while offering alternative sourcing options.

Substiute Parts

BZT52B36-TP

Micro Commercial CoIn Stock: 747BZT52B36-TP Datasheet

Current PartRFQ

DDZ36-7

Diodes IncorporatedIn Stock: 41260DDZ36-7 Datasheet

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MMSZ36T1G

onsemiIn Stock: 16392MMSZ36T1G Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the BZT52B36-TP is determined by the following criteria:

Primary Substitution Criteria:

• Zener voltage (Vz) must equal 36 V nominal
• Package must be SOD-123 surface mount
• Mounting type must be surface mount
• RoHS3 compliance required
• REACH Unaffected status required

Secondary Compatibility Factors:

• Power rating (Pmax) must be equal to or greater than 410 mW
• Forward voltage (Vf) at 10 mA must not exceed 900 mV
• Impedance (Zzt) should remain within 85–90 Ohms for optimal circuit performance
• Operating temperature range should encompass the application requirements
• Tolerance specification should support circuit accuracy requirements

The substitute parts DDZ36-7 and MMSZ36T1G meet the primary substitution criteria. Both maintain the 36 V Zener voltage specification and SOD-123 package format. Differences in power rating, tolerance, and temperature range are documented in the parameter comparison table below.

Parameter Comparison

Engineering Selection Recommendations

DDZ36-7 (Diodes Incorporated): The DDZ36-7 is suitable for applications where power dissipation does not exceed 310 mW. This part features a tighter impedance specification (85 Ohms) and lower reverse leakage current (50 nA @ 30 V), making it appropriate for precision voltage reference circuits. The operating temperature range extends to -65°C, supporting applications requiring enhanced low-temperature performance. The tolerance specification of ±2.5% provides adequate accuracy for most regulation applications. This substitute is recommended when thermal constraints limit power dissipation or when lower leakage current is beneficial.

MMSZ36T1G (onsemi): The MMSZ36T1G offers the highest power rating at 500 mW, providing thermal margin for applications with higher power dissipation requirements. The ±5% tolerance is suitable for general-purpose voltage regulation where tighter tolerance is not critical. The impedance specification matches the main part at 90 Ohms. The operating temperature range of -55 to 150°C aligns with the lower end of the main part's range. This substitute is recommended for applications requiring higher power handling capability or when sourcing from onsemi is preferred.

All substitute parts maintain RoHS3 compliance and REACH Unaffected status, ensuring regulatory compatibility with the original specification.

Frequently Asked Questions (FAQ)

Q: Can DDZ36-7 be used in place of BZT52B36-TP in all applications?

A: DDZ36-7 is compatible with applications where maximum power dissipation does not exceed 310 mW. The main part is rated for 410 mW; therefore, circuits designed for the full 410 mW rating require either the main part or MMSZ36T1G. Verify circuit power requirements before substitution.

Q: What is the impact of tolerance differences between these parts?

A: The main part BZT52B36-TP specifies ±2% tolerance, DDZ36-7 specifies ±2.5%, and MMSZ36T1G specifies ±5%. In voltage regulation circuits, tighter tolerance reduces output voltage variation. Applications requiring precise voltage reference should prioritize the main part or DDZ36-7. General-purpose regulation circuits tolerate the ±5% specification of MMSZ36T1G.

Q: Are all three parts pin-compatible?

A: Yes. All three parts use the SOD-123 surface mount package with identical pin configuration and footprint. Direct PCB substitution is possible without layout modification.

Q: Which substitute part has the lowest reverse leakage current?

A: Both DDZ36-7 and MMSZ36T1G specify 50 nA reverse leakage current, compared to 100 nA for the main part BZT52B36-TP. Lower leakage current reduces standby power consumption in precision circuits.

Q: What is the maximum operating temperature for each part?

A: BZT52B36-TP operates to 175°C, DDZ36-7 to 150°C, and MMSZ36T1G to 150°C. Applications requiring operation above 150°C require the main part BZT52B36-TP.

Q: Can MMSZ36T1G replace BZT52B36-TP in high-power applications?

A: MMSZ36T1G is rated for 500 mW, exceeding the main part's 410 mW rating. This part is suitable for applications requiring higher power dissipation. The ±5% tolerance is acceptable for general regulation; verify tolerance requirements for your specific application.

Q: Are all parts available in the same packaging format?

A: BZT52B36-TP is supplied in Tape & Reel (TR) format. DDZ36-7 is supplied in Tape & Reel (TR) format. MMSZ36T1G is supplied in Cut Tape (CT) & Digi-Reel® format. Verify packaging compatibility with your procurement and assembly processes.