BZT52C36-TP Equivalent & Substitute Parts

Part Overview

The BZT52C36-TP is a 36 V Zener diode manufactured by Micro Commercial Co, rated for 200 mW power dissipation in a surface mount SOD-123 package. This component is designed for voltage regulation and protection applications requiring precise 36 V reference voltage with ±6% tolerance. The part is currently active in production with full RoHS3 compliance and unlimited moisture sensitivity rating.

Substitute parts are necessary when the primary part experiences supply constraints, extended lead times, or when design requirements permit higher power ratings or alternative package configurations while maintaining electrical compatibility.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nominal)	36	V
Tolerance	±6%	—
Power - Maximum	200	mW
Impedance (Maximum)	90	Ohms
Current - Reverse Leakage @ Vr	100	nA @ 25.2 V
Voltage - Forward (Maximum) @ If	900	mV @ 10 mA
Operating Temperature Range	-65 to 150	°C
Mounting Type	Surface Mount	—
Package / Case	SOD-123	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution eligibility for the BZT52C36-TP is determined by the following critical parameters:

Primary Substitution Criteria:

Zener voltage: 36 V (nominal)
Tolerance: ±5% to ±6% acceptable
Package / Case: SOD-123 or SOD-323 (mechanically compatible surface mount packages)
Mounting Type: Surface Mount
Operating Temperature Range: Must encompass or exceed -65°C to 150°C
RoHS3 Compliance: Required
Forward Voltage (Vf) @ 10 mA: 900 mV maximum

Secondary Substitution Criteria:

Power Rating: 200 mW minimum (higher ratings acceptable for uprating applications)
Impedance (Zzt): 60 to 90 Ohms acceptable
Reverse Leakage Current: 50 to 100 nA acceptable

Substitute parts meeting these criteria provide electrical equivalence while accommodating variations in power dissipation capability, impedance characteristics, and reverse leakage specifications. Package variations (SOD-123 vs. SOD-323) require PCB layout verification but maintain functional compatibility.

Parameter Comparison

Part Number	Manufacturer	Vz (V)	Tolerance	Power (mW)	Zzt (Ohms)	Vf @ 10mA (mV)	Temp Range (°C)	Package	RoHS3
BZT52C36-TP	Micro Commercial Co	36	±6%	200	90	900	-65 to 150	SOD-123	Yes
BZT52C36-7-F	Diodes Incorporated	36	±6%	500	90	900	-65 to 150	SOD-123	Yes
BZT52C36Q-7-F	Diodes Incorporated	36	±5.56%	370	90	900	-65 to 150	SOD-123	Yes
CMHZ5258B TR PBFREE	Central Semiconductor Corp	36	±5%	500	70	900	-65 to 150	SOD-123	Yes
DDZ9715-7	Diodes Incorporated	36	±5%	500	—	900	-65 to 150	SOD-123	Yes
MMSZ36T1G	onsemi	36	±5%	500	90	900	-55 to 150	SOD-123	Yes
MMSZ5258B-7-F	Diodes Incorporated	36	±5%	500	70	900	-65 to 150	SOD-123	Yes
PZU36BA,115	Nexperia USA Inc.	36	±5%	320	60	1100	-55 to 150	SOD-323	Yes

Engineering Selection Recommendations

Direct Electrical Equivalents (SOD-123 Package):

BZT52C36-7-F, BZT52C36Q-7-F, CMHZ5258B TR PBFREE, DDZ9715-7, MMSZ36T1G, and MMSZ5258B-7-F all maintain the 36 V nominal zener voltage with tolerance specifications within ±5% to ±6%. These parts are suitable for direct substitution in applications where the original 200 mW power rating is adequate or where higher power dissipation (370 to 500 mW) provides design margin. All substitute parts maintain SOD-123 package compatibility, identical forward voltage characteristics at 10 mA, and full RoHS3 compliance.

Temperature Consideration:

MMSZ36T1G and PZU36BA,115 specify a minimum operating temperature of -55°C, compared to the BZT52C36-TP minimum of -65°C. Selection of these parts requires verification that the application does not require operation below -55°C.

Package Variation (SOD-323):

PZU36BA,115 is packaged in SOD-323 (SC-76), a smaller surface mount package than SOD-123. This part is electrically equivalent but requires PCB layout modification. The forward voltage specification differs at 1.1 V @ 100 mA (versus 900 mV @ 10 mA for other substitutes), indicating different measurement conditions but equivalent performance at standard operating points.

Impedance Characteristics:

CMHZ5258B TR PBFREE, MMSZ5258B-7-F, and PZU36BA,115 specify lower maximum impedance (60 to 70 Ohms) compared to the primary part and other substitutes (90 Ohms). Lower impedance provides improved voltage regulation stability in dynamic load conditions.

Compliance and Availability:

All substitute parts carry active product status, RoHS3 compliance, and unlimited moisture sensitivity rating (MSL 1). Selection should prioritize parts with highest current inventory availability to minimize procurement lead time.

Frequently Asked Questions (FAQ)

Q: Can BZT52C36-7-F replace BZT52C36-TP directly on the PCB?

A: Yes. Both parts are packaged in SOD-123 with identical pinout and footprint. The BZT52C36-7-F provides 500 mW power rating compared to 200 mW, offering increased thermal margin without electrical incompatibility. No PCB modification is required.

Q: What is the difference between ±5% and ±6% tolerance specifications?

A: Tolerance defines the acceptable deviation of the zener voltage from the nominal 36 V specification. ±6% tolerance (BZT52C36-TP, BZT52C36-7-F) permits 34.84 V to 37.16 V operation. ±5% tolerance (most substitute parts) permits 34.2 V to 37.8 V operation. Both tolerances are acceptable for standard voltage regulation applications. Applications requiring tighter voltage control should specify ±5% parts.

Q: Is PZU36BA,115 compatible with BZT52C36-TP?

A: PZU36BA,115 is electrically equivalent but packaged in SOD-323 instead of SOD-123. Direct PCB substitution is not possible without layout modification. The SOD-323 package is smaller and requires different land pattern design. Electrical performance is equivalent for 36 V regulation applications.

Q: Why do some substitute parts specify lower reverse leakage current (50 nA vs. 100 nA)?

A: Reverse leakage current is measured at specified reverse voltage conditions. Lower leakage (50 nA) indicates superior diode quality and lower standby current consumption. Parts with 50 nA leakage (DDZ9715-7, MMSZ36T1G) are preferred for low-power applications where standby current is critical.

Q: Can I use a 500 mW rated part in place of a 200 mW part?

A: Yes. Higher power rating indicates greater thermal capacity. A 500 mW part operates cooler than a 200 mW part under identical current conditions, providing design margin and improved reliability. No electrical incompatibility exists.

Q: What is the significance of impedance (Zzt) specification?

A: Impedance defines the dynamic resistance of the zener diode at specified operating current. Lower impedance (60 to 70 Ohms) provides better voltage regulation under varying load conditions. Higher impedance (90 Ohms) is acceptable for applications with stable load current. Selection depends on load regulation requirements.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts carry RoHS3 compliance certification, meeting EU Directive 2011/65/EU requirements for restricted hazardous substances. No compliance risk exists when substituting between listed parts.

Q: What packaging options are available for 36 V zener diodes?

A: The primary part and most substitutes use SOD-123 package. PZU36BA,115 uses SOD-323 (SC-76), a smaller alternative. Both are surface mount packages suitable for automated assembly. Package selection depends on PCB space constraints and existing design layout.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message