BZT52-C36J Equivalent & Substitute Parts

Part Overview

The BZT52-C36J is an automotive-grade Zener diode manufactured by Nexperia USA Inc., rated for 36 V nominal Zener voltage with 350 mW maximum power dissipation in a surface mount SOD-123 package. This component is classified as Active and carries AEC-Q101 automotive qualification. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to inventory constraints, supply chain considerations, or design flexibility within specified parameter tolerances.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nominal)	36	V
Tolerance	±5.6%	%
Power - Maximum	350	mW
Impedance (Maximum)	60	Ohms
Current - Reverse Leakage @ Vr	50	nA @ 25.2 V
Voltage - Forward (Maximum) @ If	900	mV @ 10 mA
Operating Temperature Range	-55 to 150	°C
Package / Case	SOD-123	—
Mounting Type	Surface Mount	—
Grade	Automotive	—
Qualification	AEC-Q101	—

Substitute Part Grouping Explanation

Substitution of the BZT52-C36J is determined by strict equivalence in the following electrical and mechanical parameters:

Primary Substitution Criteria:

Zener voltage (Nominal): 36 V
Package / Case: SOD-123 surface mount
Mounting Type: Surface Mount
Operating Temperature Range: -55°C to 150°C minimum
RoHS3 Compliance and REACH Unaffected status

Secondary Compatibility Parameters:

Power dissipation rating (minimum 350 mW acceptable)
Impedance (Zzt) within acceptable circuit design margins
Reverse leakage current specifications
Forward voltage characteristics

Parts are grouped as Parametric Equivalent when all primary criteria and key secondary parameters match within specified tolerances. Parts are grouped as Similar when primary criteria are met but secondary parameters show measurable variation that may affect circuit performance in specific applications.

Parameter Comparison

Parameter	BZT52-C36J (Main)	BZT52-C36X (Parametric Equivalent)	BZT52-C36_R1_00001 (Similar)
Manufacturer	Nexperia USA Inc.	Nexperia USA Inc.	Panjit International Inc.
Voltage - Zener (Nom)	36 V	36 V	36 V
Tolerance	±5.6%	±5.6%	±5%
Power - Max	350 mW	350 mW	410 mW
Impedance (Max)	60 Ohms	60 Ohms	90 Ohms
Current - Reverse Leakage @ Vr	50 nA @ 25.2 V	50 nA @ 25.2 V	100 nA @ 27 V
Voltage - Forward (Max) @ If	900 mV @ 10 mA	900 mV @ 10 mA	Not specified
Operating Temperature	-55°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 150°C
Package / Case	SOD-123	SOD-123	SOD-123
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Grade	Automotive	Automotive	Not specified
Qualification	AEC-Q101	AEC-Q101	Not specified
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active

Engineering Selection Recommendations

BZT52-C36X (Parametric Equivalent): The BZT52-C36X is a direct parametric equivalent to the BZT52-C36J. Both components are manufactured by Nexperia USA Inc., carry identical electrical specifications, and hold AEC-Q101 automotive qualification. This part is suitable for direct substitution in all applications where the BZT52-C36J is specified. Both parts maintain ROHS3 compliance and identical moisture sensitivity levels.

BZT52-C36_R1_00001 (Similar): The BZT52-C36_R1_00001, manufactured by Panjit International Inc., meets the primary substitution criteria of 36 V nominal Zener voltage and SOD-123 surface mount packaging. This part exhibits measurable differences in secondary parameters: increased maximum power dissipation (410 mW versus 350 mW), increased impedance (90 Ohms versus 60 Ohms), and increased reverse leakage current (100 nA @ 27 V versus 50 nA @ 25.2 V). This part does not carry specified automotive grade or AEC-Q101 qualification. Selection of this part requires confirmation that circuit design tolerances accommodate the parameter variations and that automotive qualification is not a design requirement.

Frequently Asked Questions (FAQ)

Q: Can BZT52-C36X be used as a direct replacement for BZT52-C36J?

A: Yes. The BZT52-C36X is a parametric equivalent with identical electrical specifications, package type, and automotive qualification. Direct substitution is supported without circuit modification.

Q: What are the key differences between BZT52-C36J and BZT52-C36_R1_00001?

A: Both parts share the same 36 V nominal Zener voltage and SOD-123 package. The BZT52-C36_R1_00001 has higher maximum power dissipation (410 mW), higher impedance (90 Ohms), and higher reverse leakage current (100 nA). The BZT52-C36_R1_00001 does not carry automotive grade or AEC-Q101 qualification.

Q: Is automotive qualification required for my application?

A: Automotive qualification (AEC-Q101) is specified for the BZT52-C36J and BZT52-C36X. The BZT52-C36_R1_00001 does not carry this qualification. If your application requires automotive-grade components, use only BZT52-C36J or BZT52-C36X.

Q: Are all three parts RoHS compliant?

A: Yes. All three parts are ROHS3 compliant and REACH unaffected.

Q: What is the significance of impedance differences between these parts?

A: Impedance (Zzt) affects the dynamic resistance of the Zener diode during transient conditions. The BZT52-C36J and BZT52-C36X both specify 60 Ohms maximum impedance. The BZT52-C36_R1_00001 specifies 90 Ohms maximum impedance. Circuit designs that depend on low impedance for noise suppression or transient response should use parts with 60 Ohms impedance.

Q: Can I use BZT52-C36_R1_00001 in place of BZT52-C36J?

A: Substitution is possible only if your circuit design accommodates the higher impedance, higher reverse leakage current, and higher power dissipation rating, and if automotive qualification is not a design requirement. Verify circuit performance under these parameter variations before implementation.

Q: What is the moisture sensitivity level for these parts?

A: All three parts carry MSL 1 (Unlimited), indicating no moisture sensitivity restrictions for storage or handling.

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