BZX84J-C30,115 Equivalent & Substitute Parts

Part Overview

The BZX84J-C30,115 is a 30 V Zener diode manufactured by Nexperia USA Inc., rated for 550 mW power dissipation in a surface mount SOD-323F package. This component is classified as an automotive-grade device with AEC-Q101 qualification and operates across the temperature range of -65°C to 150°C. The part maintains Active product status with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1).

Equivalent and substitute parts are identified based on matching or compatible electrical characteristics including nominal Zener voltage, power rating, impedance, leakage current, and forward voltage specifications, combined with compatible packaging and mounting configurations.

Key Parameters

Parameter	Value
Voltage - Zener (Nom) (Vz)	30 V
Tolerance	±5%
Power - Max	550 mW
Impedance (Max) (Zzt)	40 Ohms
Current - Reverse Leakage @ Vr	50 nA @ 21 V
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 100 mA
Operating Temperature	-65°C ~ 150°C
Mounting Type	Surface Mount
Package / Case	SC-90, SOD-323F
Grade	Automotive
Qualification	AEC-Q101
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the BZX84J-C30,115 is determined by the following critical parameters:

Primary Matching Criteria:

Nominal Zener voltage of 30 V
Surface mount packaging (SOD-323F or compatible SOD-323 variants)
Operating temperature range of -65°C to 150°C
RoHS3 compliance and MSL 1 rating

Secondary Compatibility Factors:

Power dissipation rating (550 mW primary specification; lower ratings acceptable for reduced power applications)
Impedance characteristics (40 Ohms nominal; variations within 75-80 Ohms acceptable depending on application requirements)
Tolerance specification (±5% nominal; tighter tolerances such as ±2% provide enhanced precision)
Reverse leakage current (50 nA @ 21 V; variations acceptable within specified ranges)

Substitute parts are classified into two categories: Parametric Equivalents (matching all critical electrical specifications) and Similar Parts (matching voltage and package with variations in power rating or impedance).

Parameter Comparison

Parameter	BZX84J-C30,115	BZX84J-B30,115	BZT52C30S-TP	MM3Z30VB	MM3Z30VC
Manufacturer	Nexperia USA Inc.	Nexperia USA Inc.	Micro Commercial Co	onsemi	Fairchild Semiconductor
Voltage - Zener (Nom) (Vz)	30 V	30 V	30 V	30 V	30 V
Tolerance	±5%	±2%	±7%	±2%	±5%
Power - Max	550 mW	550 mW	200 mW	200 mW	200 mW
Impedance (Max) (Zzt)	40 Ohms	40 Ohms	80 Ohms	75 Ohms	75 Ohms
Current - Reverse Leakage @ Vr	50 nA @ 21 V	50 nA @ 21 V	100 nA @ 21 V	45 nA @ 21 V	45 nA @ 21 V
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 100 mA	1.1 V @ 100 mA	900 mV @ 10 mA	1 V @ 10 mA	1 V @ 10 mA
Operating Temperature	-65°C ~ 150°C	-65°C ~ 150°C	-65°C ~ 150°C	-65°C ~ 150°C	-65°C ~ 150°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	SC-90, SOD-323F	SC-90, SOD-323F	SC-76, SOD-323	SC-90, SOD-323F	SC-90, SOD-323F
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Active	Active

Engineering Selection Recommendations

Parametric Equivalent - Direct Substitution:

BZX84J-B30,115 (Nexperia USA Inc.) functions as a parametric equivalent to the BZX84J-C30,115. Both parts share identical electrical specifications including 30 V nominal Zener voltage, 550 mW power rating, 40 Ohms impedance, and SOD-323F packaging. The primary distinction is tolerance specification: BZX84J-B30,115 provides ±2% tolerance compared to ±5% for the primary part. Both maintain automotive-grade classification with AEC-Q101 qualification and ROHS3 compliance. This substitute is suitable for applications requiring enhanced voltage precision.

Similar Parts - Conditional Substitution:

BZT52C30S-TP (Micro Commercial Co), MM3Z30VB (onsemi), and MM3Z30VC (Fairchild Semiconductor) are classified as similar parts due to reduced power dissipation ratings (200 mW versus 550 mW). These components maintain the 30 V nominal Zener voltage and compatible SOD-323 packaging. Substitution is appropriate for applications where power dissipation requirements do not exceed 200 mW. All three parts maintain ROHS3 compliance and -65°C to 150°C operating temperature range.

MM3Z30VB and MM3Z30VC offer ±2% and ±5% tolerance specifications respectively, providing voltage precision options. BZT52C30S-TP operates at ±7% tolerance with elevated reverse leakage current (100 nA @ 21 V) and higher impedance (80 Ohms).

All substitute parts maintain Active product status and unlimited moisture sensitivity rating (MSL 1).

Frequently Asked Questions (FAQ)

Q: Can BZX84J-B30,115 replace BZX84J-C30,115 in all applications?

A: BZX84J-B30,115 is a parametric equivalent with identical electrical specifications and packaging. The ±2% tolerance of BZX84J-B30,115 provides tighter voltage regulation compared to the ±5% tolerance of BZX84J-C30,115. Direct substitution is supported for all applications where the primary part is specified.

Q: What is the primary limitation when substituting lower power-rated parts such as MM3Z30VB or MM3Z30VC?

A: MM3Z30VB and MM3Z30VC are rated for 200 mW maximum power dissipation, compared to 550 mW for BZX84J-C30,115. These parts are suitable only for applications where power dissipation does not exceed 200 mW. Exceeding this rating results in component failure.

Q: Are all substitute parts automotive-qualified?

A: BZX84J-B30,115 carries automotive-grade classification with AEC-Q101 qualification, matching the primary part. MM3Z30VB, MM3Z30VC, and BZT52C30S-TP do not specify automotive qualification in the provided parameters. Selection should account for application requirements regarding automotive compliance.

Q: Do package differences between SOD-323F and SOD-323 affect substitution?

A: BZX84J-C30,115, BZX84J-B30,115, MM3Z30VB, and MM3Z30VC utilize SOD-323F packaging (SC-90). BZT52C30S-TP uses SOD-323 packaging (SC-76). Both package types are surface mount configurations with compatible footprints for most applications. Verification of PCB layout compatibility is required prior to substitution.

Q: What tolerance specification should be selected for precision voltage regulation applications?

A: BZX84J-B30,115 and MM3Z30VB both provide ±2% tolerance, offering enhanced voltage precision compared to ±5% (BZX84J-C30,115, MM3Z30VC) or ±7% (BZT52C30S-TP). Selection depends on application voltage regulation requirements.

Q: Are all substitute parts RoHS3 compliant?

A: All listed substitute parts maintain ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1), matching the environmental compliance profile of BZX84J-C30,115.

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