BZX584C22-V-G-08 Equivalent & Substitute Parts

Part Overview

The BZX584C22-V-G-08 is a 22 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 active equivalent and substitute parts for ongoing design requirements and procurement needs. Equivalent parts maintain identical electrical specifications, while substitute parts provide functional alternatives with modified parameters within acceptable design tolerances.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nominal)	22	V
Tolerance	±5%	—
Power - Maximum	200	mW
Impedance (Maximum)	55	Ohms
Current - Reverse Leakage @ Vr	50	nA @ 15.4 V
Operating Temperature Range	-65 to 150	°C
Mounting Type	Surface Mount	—
Package / Case	SC-79, SOD-523	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the BZX584C22-V-G-08 is determined by the following critical parameters:

Primary Matching Criteria:

Zener voltage: 22 V nominal
Package type: SOD-523 surface mount
RoHS3 compliance
Moisture sensitivity level: 1 (Unlimited)

Secondary Compatibility Factors:

Power rating: 200 mW or greater
Tolerance: ±5% or tighter
Impedance: 55 Ohms or lower
Reverse leakage current: 50 nA or lower
Operating temperature range: -65°C to 150°C or equivalent coverage

Substitute parts are grouped into two categories: direct equivalents maintaining all primary specifications, and functional alternatives with modified power ratings or impedance characteristics that remain within acceptable design parameters for 22 V Zener applications.

Parameter Comparison

Part Number	Manufacturer	Vz (Nom)	Tolerance	Power (Max)	Impedance (Max)	Reverse Leakage @ Vr	Temp Range	Package	Status
BZX584C22-V-G-08	Vishay	22 V	±5%	200 mW	55 Ω	50 nA @ 15.4 V	-65 to 150°C	SOD-523	Obsolete
BZX584C22-G3-08	Vishay	22 V	±5%	200 mW	20 Ω	50 nA @ 15.4 V	-65 to 150°C	SOD-523	Active
BZT52C22T-7	Diodes Incorporated	22 V	±6%	300 mW	55 Ω	100 nA @ 15.4 V	-65 to 150°C	SOD-523	Active
BZT52C22T-TP	Micro Commercial Co	22 V	±5%	100 mW	55 Ω	100 nA @ 15.4 V	-65 to 150°C	SOD-523	Active
DDZ9708T-7	Diodes Incorporated	22 V	±5%	150 mW	—	50 nA @ 16.7 V	-65 to 150°C	SOD-523	Active
CZRU52C22	Comchip Technology	22 V	±5%	150 mW	55 Ω	100 nA @ 17 V	-55 to 125°C	0603/SOD-523F	Active
CZRUR52C22	Comchip Technology	22 V	±5%	150 mW	55 Ω	100 nA @ 17 V	-55 to 125°C	0603/SOD-523F	Active

Engineering Selection Recommendations

Direct Equivalent (Preferred):

BZX584C22-G3-08 is the primary equivalent for BZX584C22-V-G-08. Both parts are manufactured by Vishay within the same BZX584C series, maintain identical 22 V nominal voltage and ±5% tolerance, and share the SOD-523 package. The BZX584C22-G3-08 features improved impedance characteristics (20 Ω versus 55 Ω) while maintaining the same 200 mW power rating and reverse leakage specifications. This part carries active product status and full RoHS3 compliance.

Higher Power Alternative:

BZT52C22T-7 (Diodes Incorporated) provides increased power dissipation capability at 300 mW while maintaining the 22 V nominal voltage and SOD-523 package. This part accommodates applications requiring greater thermal headroom. Tolerance is ±6%, and reverse leakage is specified at 100 nA. Operating temperature range matches the original part.

Lower Power Alternative:

BZT52C22T-TP (Micro Commercial Co) is suitable for applications with reduced power requirements, rated at 100 mW. This part maintains ±5% tolerance, 22 V nominal voltage, and SOD-523 package compatibility. Operating temperature range is -65°C to 150°C.

Reduced Temperature Range Alternative:

DDZ9708T-7 (Diodes Incorporated) provides 150 mW power rating with ±5% tolerance and 22 V nominal voltage in SOD-523 package. Operating temperature range is -65°C to 150°C. Reverse leakage is specified at 50 nA @ 16.7 V, matching the original part's leakage characteristics.

Package Variant Alternatives:

CZRU52C22 and CZRUR52C22 (Comchip Technology) are functionally equivalent 22 V Zener diodes with 150 mW power rating and ±5% tolerance. These parts utilize 0603/SOD-523F package format. Operating temperature range is -55°C to 125°C, which is narrower than the original part. Both parts are available in Tape & Reel packaging.

All substitute parts maintain RoHS3 compliance, MSL Level 1 (Unlimited), and REACH unaffected status consistent with the original component.

Frequently Asked Questions (FAQ)

Q: Can BZX584C22-G3-08 be used as a direct replacement for BZX584C22-V-G-08?

A: Yes. BZX584C22-G3-08 is a direct equivalent manufactured by the same supplier (Vishay) within the same product series. Both parts share identical 22 V nominal voltage, ±5% tolerance, 200 mW power rating, and SOD-523 package. The BZX584C22-G3-08 features lower impedance (20 Ω versus 55 Ω), which provides improved performance characteristics. Both parts are RoHS3 compliant with MSL Level 1.

Q: What is the difference between BZT52C22T-7 and the original BZX584C22-V-G-08?

A: BZT52C22T-7 is manufactured by Diodes Incorporated rather than Vishay and provides 300 mW power dissipation compared to 200 mW in the original part. The nominal voltage remains 22 V, and both use SOD-523 packages. Tolerance is ±6% for BZT52C22T-7 versus ±5% for the original. Reverse leakage is higher at 100 nA. This part is suitable for applications requiring greater power handling capability.

Q: Are CZRU52C22 and CZRUR52C22 compatible with the original part's package?

A: CZRU52C22 and CZRUR52C22 use 0603/SOD-523F package format, which differs from the SC-79/SOD-523 package of the original part. While both are surface mount packages, PCB layout and footprint compatibility must be verified before substitution. These parts are suitable only if the design accommodates the 0603 form factor.

Q: What is the impact of using BZT52C22T-TP with lower power rating (100 mW)?

A: BZT52C22T-TP is rated for 100 mW versus 200 mW in the original part. This substitution is appropriate only for applications where the actual power dissipation does not exceed 100 mW. If the circuit design requires the full 200 mW capability, this part is not suitable. Verify thermal requirements before selection.

Q: Do all substitute parts maintain the original operating temperature range?

A: No. DDZ9708T-7, BZT52C22T-7, and BZT52C22T-TP maintain the -65°C to 150°C range. CZRU52C22 and CZRUR52C22 have a narrower range of -55°C to 125°C. For applications requiring full -65°C to 150°C operation, select from the first group.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts are RoHS3 compliant with MSL Level 1 (Unlimited) and REACH unaffected status, matching the original BZX584C22-V-G-08 specifications.

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

A: Impedance affects the dynamic resistance of the Zener diode at operating current. BZX584C22-G3-08 features 20 Ω impedance versus 55 Ω in the original part and most substitutes. Lower impedance provides better voltage regulation and reduced output impedance in voltage reference applications. Higher impedance may be acceptable in applications with less stringent regulation requirements.

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