GDZ2V4B-HE3-08 Equivalent & Substitute Parts

Part Overview

The GDZ2V4B-HE3-08 is a Zener diode rated at 2.4 V nominal with 200 mW maximum power dissipation in a surface mount SOD-323 package. Manufactured by Vishay General Semiconductor - Diodes Division, this component is classified as Active product status and carries automotive-grade qualification (AEC-Q101). Alternative equivalent parts are necessary when primary inventory is unavailable, when design requirements permit tolerance or power rating variations, or when sourcing from alternative manufacturers is required for supply chain optimization.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nom)	2.4	V
Tolerance	±4%	—
Power - Max	200	mW
Impedance (Max)	100	Ohms
Current - Reverse Leakage @ Vr	120	µA @ 1 V
Operating Temperature Range	-55 to 150	°C
Package / Case	SOD-323	—
Mounting Type	Surface Mount	—
Grade	Automotive	—
Qualification	AEC-Q101	—

Substitute Part Grouping Explanation

Substitution eligibility for the GDZ2V4B-HE3-08 is determined by the following critical parameters:

Primary Matching Criteria:

Zener voltage nominal: 2.4 V
Package type: SOD-323 (SC-76)
Mounting type: Surface Mount
Operating temperature range: -55°C to 150°C minimum

Secondary Compatibility Criteria:

Power rating: 200 mW or greater
Impedance (Max): 100 Ohms or less
Reverse leakage current: specification dependent on application requirements
Voltage tolerance: ±4% or tighter

Substitute parts are grouped into two categories:

Category 1 - Parametric Equivalents (Vishay GDZ and BZX384 Series): Parts BZX384B2V4-HE3-08, BZX384B2V4-G3-08, BZX384B2V4-E3-08, and GDZ2V4B-E3-08 maintain identical zener voltage, power rating, impedance, and package specifications. These parts differ in voltage tolerance (±2% vs. ±4%) and reverse leakage characteristics. All are Vishay products with Active status and automotive qualification where applicable.

Category 2 - Manufacturer Recommended Equivalent (onsemi SZMM3Z2V4T1G): This part maintains the 2.4 V zener voltage and SOD-323 package but offers increased power dissipation (300 mW vs. 200 mW) and wider voltage tolerance (±8%). This part is automotive-qualified (AEC-Q101) and suitable for applications requiring higher power handling capability.

Parameter Comparison

Parameter	GDZ2V4B-HE3-08	BZX384B2V4-HE3-08	BZX384B2V4-G3-08	BZX384B2V4-E3-08	GDZ2V4B-E3-08	SZMM3Z2V4T1G
Manufacturer	Vishay	Vishay	Vishay	Vishay	Vishay	onsemi
Voltage - Zener (Nom)	2.4 V	2.4 V	2.4 V	2.4 V	2.4 V	2.4 V
Tolerance	±4%	±2%	±2%	±2%	±4%	±8%
Power - Max	200 mW	200 mW	200 mW	200 mW	200 mW	300 mW
Impedance (Max)	100 Ohms	100 Ohms	100 Ohms	100 Ohms	100 Ohms	100 Ohms
Current - Reverse Leakage @ Vr	120 µA @ 1 V	50 µA @ 1 V	50 µA @ 1 V	50 µA @ 1 V	120 µA @ 1 V	50 µA @ 1 V
Operating Temperature	-55 to 150°C	-55 to 150°C	-55 to 150°C	-55 to 150°C	-55 to 150°C	-65 to 150°C
Package / Case	SOD-323	SOD-323	SOD-323	SOD-323	SOD-323	SOD-323
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Grade	Automotive	Automotive	—	—	—	Automotive
Qualification	AEC-Q101	AEC-Q101	—	—	—	AEC-Q101
Product Status	Active	Active	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement (Automotive Applications):

BZX384B2V4-HE3-08 is the primary equivalent for automotive applications. This part maintains identical electrical specifications to the GDZ2V4B-HE3-08 while offering improved voltage tolerance (±2% vs. ±4%) and lower reverse leakage current (50 µA vs. 120 µA). Both parts carry AEC-Q101 automotive qualification and Active product status. The BZX384B2V4-HE3-08 provides superior performance characteristics within the same package and power rating.

For Automotive Applications with Relaxed Tolerance Requirements:

GDZ2V4B-E3-08 is functionally equivalent to the primary part, maintaining the same ±4% tolerance and 120 µA reverse leakage specification. This part is suitable when the original GDZ2V4B-HE3-08 is unavailable and tolerance specifications are not critical. Both parts are from the same GDZ series and carry identical electrical and thermal characteristics.

For Non-Automotive Surface Mount Applications:

BZX384B2V4-G3-08 and BZX384B2V4-E3-08 are suitable for non-automotive surface mount applications requiring the 2.4 V zener voltage and 200 mW power rating. These parts offer ±2% tolerance and lower reverse leakage but do not carry automotive qualification. Selection between these variants depends on inventory availability and supply chain requirements.

For Applications Requiring Higher Power Dissipation:

SZMM3Z2V4T1G (onsemi) is suitable when circuit design permits increased power handling (300 mW vs. 200 mW). This part maintains the 2.4 V zener voltage, SOD-323 package, and AEC-Q101 automotive qualification. The wider voltage tolerance (±8%) and lower reverse leakage (50 µA) must be evaluated against application requirements. The extended operating temperature range (-65°C to 150°C) provides additional thermal margin.

Frequently Asked Questions (FAQ)

Q: Can BZX384B2V4-HE3-08 be used as a direct replacement for GDZ2V4B-HE3-08?

A: Yes. Both parts maintain identical zener voltage (2.4 V), power rating (200 mW), impedance (100 Ohms), and operating temperature range (-55°C to 150°C). Both are packaged in SOD-323 and carry AEC-Q101 automotive qualification. The BZX384B2V4-HE3-08 offers tighter voltage tolerance (±2% vs. ±4%) and lower reverse leakage current (50 µA vs. 120 µA), making it a superior equivalent.

Q: What is the difference between the BZX384 series variants (HE3, G3, E3)?

A: The suffixes denote different manufacturing or packaging variants within the BZX384 series. BZX384B2V4-HE3-08 and BZX384B2V4-E3-08 are both Vishay parts with identical electrical specifications (±2% tolerance, 50 µA reverse leakage). BZX384B2V4-G3-08 is from the BZX384-G variant line. All three maintain the same 2.4 V zener voltage, 200 mW power rating, and SOD-323 package. Selection depends on inventory availability and supply chain requirements.

Q: Is SZMM3Z2V4T1G compatible with the original GDZ2V4B-HE3-08 design?

A: SZMM3Z2V4T1G is compatible for applications where the circuit design permits the following parameter variations: increased power dissipation (300 mW vs. 200 mW), wider voltage tolerance (±8% vs. ±4%), and extended lower operating temperature limit (-65°C vs. -55°C). The zener voltage (2.4 V), package (SOD-323), and reverse leakage (50 µA) are compatible. This part is suitable for designs with power margin and tolerance flexibility.

Q: Are all substitute parts RoHS3 compliant and automotive-qualified?

A: All substitute parts listed are ROHS3 compliant. Automotive qualification (AEC-Q101) is confirmed for GDZ2V4B-HE3-08, BZX384B2V4-HE3-08, and SZMM3Z2V4T1G. BZX384B2V4-G3-08, BZX384B2V4-E3-08, and GDZ2V4B-E3-08 do not carry automotive qualification designation. Selection for automotive applications must prioritize parts with AEC-Q101 certification.

Q: What is the impact of reverse leakage current differences between substitute parts?

A: The GDZ2V4B-HE3-08 and GDZ2V4B-E3-08 specify 120 µA reverse leakage at 1 V, while BZX384 series parts and SZMM3Z2V4T1G specify 50 µA. Lower reverse leakage reduces standby current consumption and heat generation in the diode. Applications sensitive to leakage current or operating at elevated temperatures should prioritize parts with lower reverse leakage specifications (50 µA).

Q: Can these parts be used interchangeably in existing PCB designs?

A: Yes, all substitute parts use the SOD-323 package (SC-76) with identical pin configuration and footprint. No PCB layout modifications are required. Electrical parameter differences (tolerance, leakage, power rating) must be evaluated against circuit design margins and application requirements before substitution.

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