BZX584C30-V-G-08 Equivalent & Substitute Parts

Part Overview

The BZX584C30-V-G-08 is a 30 V Zener diode rated for 200 mW power dissipation in a surface mount SOD-523 package, manufactured by Vishay General Semiconductor - Diodes Division. This component is classified as obsolete, necessitating identification of equivalent and substitute parts for ongoing design requirements and procurement needs. The part maintains ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1), making it suitable for industrial and commercial applications across the -65°C to 150°C operating temperature range.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nominal)	30	V
Tolerance	±5%	—
Power - Maximum	200	mW
Impedance (Maximum)	80	Ohms
Current - Reverse Leakage @ Vr	50	nA @ 21 V
Operating Temperature Range	-65 to 150	°C
Mounting Type	Surface Mount	—
Package / Case	SC-79, SOD-523	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the BZX584C30-V-G-08 is determined by the following critical parameters:

Primary Substitution Criteria:

Zener voltage: 30 V (nominal)
Voltage tolerance: ±5% or tighter
Power rating: minimum 200 mW (or lower if circuit design permits)
Package type: SOD-523 or equivalent surface mount form factor
Mounting: Surface mount technology
Compliance: ROHS3 compliant, MSL 1

Secondary Compatibility Factors:

Impedance characteristics (Zzt)
Reverse leakage current specifications
Operating temperature range coverage
Product status (active preferred for long-term availability)

Substitute parts are grouped into two categories: direct equivalents maintaining identical electrical specifications and functional alternatives with modified power ratings or impedance characteristics that remain electrically compatible within circuit design tolerances.

Parameter Comparison

Parameter	BZX584C30-V-G-08	BZX584C30-G3-08	BZT52C30T-TP	CZRU52C30	CZRUR52C30	DDZ9713T-7
Manufacturer	Vishay	Vishay	Micro Commercial Co	Comchip Technology	Comchip Technology	Diodes Incorporated
Voltage - Zener (Nom)	30 V	30 V	30 V	30 V	30 V	30 V
Tolerance	±5%	±5%	±7%	±5%	±5%	±5%
Power - Max	200 mW	200 mW	100 mW	150 mW	150 mW	150 mW
Impedance (Max)	80 Ω	30 Ω	80 Ω	80 Ω	80 Ω	Not specified
Current - Reverse Leakage @ Vr	50 nA @ 21 V	50 nA @ 21 V	100 nA @ 21 V	100 nA @ 23 V	100 nA @ 23 V	50 nA @ 22.8 V
Operating Temperature	-65 to 150°C	150°C (TJ)	-65 to 150°C	-55 to 125°C	-55 to 125°C	-65 to 150°C (TJ)
Package / Case	SC-79, SOD-523	SC-79, SOD-523	SC-79, SOD-523	2-SMD, No Lead (0603)	2-SMD, No Lead (0603)	SC-79, SOD-523
Product Status	Obsolete	Active	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Tier 1 - Direct Equivalent (Preferred for Replacement):

BZX584C30-G3-08 (Vishay) is the primary substitute. This part maintains identical zener voltage (30 V), tolerance (±5%), power rating (200 mW), and package format (SOD-523). The component is manufactured by the same supplier as the original part and carries active product status, ensuring long-term availability. Lower impedance (30 Ω vs. 80 Ω) provides improved voltage regulation characteristics. Operating temperature specification of 150°C (TJ) covers the upper range of the original part's specification. ROHS3 compliance and MSL 1 rating match the original part exactly.

Tier 2 - Functional Equivalent (Alternative for Power-Reduced Applications):

DDZ9713T-7 (Diodes Incorporated) provides 150 mW power rating with matching 30 V zener voltage and ±5% tolerance. This part is suitable for applications where the full 200 mW power dissipation is not required. Reverse leakage current (50 nA @ 22.8 V) matches the original specification. Operating temperature range (-65 to 150°C) and SOD-523 package maintain full compatibility. Active product status ensures procurement availability.

Tier 3 - Functional Equivalent (Alternative for Reduced Temperature Range Applications):

CZRU52C30 and CZRUR52C30 (Comchip Technology) both provide 150 mW power rating with 30 V zener voltage and ±5% tolerance. These parts feature 0603/SOD-523F package format, maintaining surface mount compatibility. Operating temperature range (-55 to 125°C) is narrower than the original part. These options are suitable for applications not requiring the full -65°C lower temperature limit. Active product status supports long-term procurement.

Tier 4 - Reduced Power Alternative:

BZT52C30T-TP (Micro Commercial Co) provides 100 mW power rating with 30 V zener voltage. Tolerance specification is ±7%, which is wider than the original ±5%. This part is suitable only for applications with reduced power dissipation requirements and where the wider tolerance is acceptable. Operating temperature range (-65 to 150°C) matches the original part. Active product status ensures availability.

Frequently Asked Questions (FAQ)

Q: Can BZX584C30-G3-08 be used as a direct replacement for BZX584C30-V-G-08?

A: Yes. Both parts share identical zener voltage (30 V), tolerance (±5%), power rating (200 mW), and SOD-523 package format. BZX584C30-G3-08 is manufactured by Vishay and carries active product status, making it the preferred direct substitute. The lower impedance (30 Ω vs. 80 Ω) provides improved regulation performance.

Q: What is the difference between SOD-523 and 0603 package formats?

A: SOD-523 (SC-79) and 0603 are both surface mount packages for two-terminal diodes but differ in physical dimensions and land pattern. CZRU52C30 and CZRUR52C30 use 0603/SOD-523F format. Verify PCB layout compatibility before substitution. SOD-523 and 0603 packages are not interchangeable without PCB redesign.

Q: Can I use DDZ9713T-7 if my circuit only requires 150 mW instead of 200 mW?

A: Yes. DDZ9713T-7 provides 150 mW power rating with matching 30 V zener voltage and ±5% tolerance. This part is suitable for applications where the full 200 mW power dissipation is not required. Verify circuit power dissipation calculations before substitution.

Q: Why does BZT52C30T-TP have ±7% tolerance instead of ±5%?

A: BZT52C30T-TP is manufactured by Micro Commercial Co and carries ±7% tolerance specification. This wider tolerance may affect circuit performance in applications requiring tighter voltage regulation. Use this part only when the ±7% tolerance is acceptable for circuit operation.

Q: Are CZRU52C30 and CZRUR52C30 identical parts?

A: CZRU52C30 and CZRUR52C30 share identical electrical specifications (30 V, ±5%, 150 mW, 0603/SOD-523F package). Both are manufactured by Comchip Technology with active product status. Verify packaging and reel specifications with supplier documentation for procurement purposes.

Q: What is the impact of operating temperature range differences?

A: BZX584C30-V-G-08 operates from -65°C to 150°C. CZRU52C30 and CZRUR52C30 operate from -55°C to 125°C. If your application requires operation below -55°C or above 125°C, these Comchip parts are not suitable. DDZ9713T-7 and BZX584C30-G3-08 maintain the full -65°C to 150°C range.

Q: Is reverse leakage current specification critical for substitution?

A: Reverse leakage current affects circuit performance in high-impedance applications. BZX584C30-V-G-08 and BZX584C30-G3-08 specify 50 nA @ 21 V. CZRU52C30, CZRUR52C30, and BZT52C30T-TP specify 100 nA at higher voltages. DDZ9713T-7 specifies 50 nA @ 22.8 V. Verify leakage current requirements for your specific circuit application.

Q: Can I substitute parts with different impedance values?

A: Impedance affects voltage regulation and transient response. BZX584C30-G3-08 has lower impedance (30 Ω vs. 80 Ω), providing improved regulation. Other substitutes maintain 80 Ω impedance matching the original part. Impedance differences may affect circuit performance in precision voltage regulation applications. Verify circuit requirements before substitution.

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