CZRQR22VB-HF Zener Diode Equivalent & Substitute Parts

Part Overview

The CZRQR22VB-HF is a 22 V, 125 mW Zener diode manufactured by Comchip Technology in 0402 surface mount package. This component is classified as obsolete product status, necessitating identification of active equivalent alternatives for new designs and ongoing production requirements. The part operates across -55°C to 125°C temperature range with ±3% voltage tolerance and is ROHS3 compliant.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nom)	22	V
Power - Max	125	mW
Tolerance	±3%	-
Impedance (Max)	55	Ohms
Current - Reverse Leakage @ Vr	100 nA @ 17 V	-
Voltage - Forward (Vf) (Max) @ If	900 mV @ 10 mA	-
Operating Temperature	-55°C ~ 125°C	-
Mounting Type	Surface Mount	-
Package / Case	0402 (1006 Metric)	-
Supplier Device Package	0402C/SOD-923F	-
RoHS Status	ROHS3 Compliant	-
Moisture Sensitivity Level	1 (Unlimited)	-

Substitute Part Grouping Explanation

Substitution of the CZRQR22VB-HF is determined by the following critical parameters:

Primary Matching Criteria:

Zener voltage: 22 V nominal
Impedance (Max): 55 Ohms
Voltage - Forward (Vf) (Max) @ If: 900 mV @ 10 mA
RoHS3 compliance
Moisture Sensitivity Level: 1 (Unlimited)

Secondary Compatibility Factors:

Operating temperature range: -55°C minimum to 125°C minimum
Mounting type: Surface Mount
Package compatibility: 0402 (1006 Metric) or equivalent SOD-923F footprint

Allowable Parameter Variations:

Power rating: May be equal or greater than 125 mW
Tolerance: May be tighter (lower) than ±3%
Reverse leakage current: May be lower than 100 nA @ 17 V
Product status: Active status preferred for obsolete parts

Three substitute parts meet these criteria with varying power ratings and tolerance specifications.

Parameter Comparison

Parameter	CZRQR22VB-HF (Main)	CZRQC22VB-HF	BZX884-B22,315	BZX884-C22,315
Manufacturer	Comchip Technology	Comchip Technology	NXP Semiconductors	Nexperia USA Inc.
Product Status	Obsolete	Active	Active	Active
Voltage - Zener (Nom)	22 V	22 V	22 V	22 V
Tolerance	±3%	±2.5%	±2%	±5%
Power - Max	125 mW	125 mW	250 mW	250 mW
Impedance (Max)	55 Ohms	55 Ohms	55 Ohms	55 Ohms
Current - Reverse Leakage @ Vr	100 nA @ 17 V	100 nA @ 17 V	50 nA @ 15.4 V	50 nA @ 15.4 V
Voltage - Forward (Vf) (Max) @ If	900 mV @ 10 mA	900 mV @ 10 mA	900 mV @ 10 mA	900 mV @ 10 mA
Operating Temperature	-55°C ~ 125°C	-55°C ~ 125°C (TJ)	-65°C ~ 150°C	-65°C ~ 150°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	0402 (1006 Metric)	0402 (1006 Metric)	SOD-882	SOD-882
Supplier Device Package	0402C/SOD-923F	0402C/SOD-923F	DFN1006-2	DFN1006-2
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Not specified	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	Not specified	1 (Unlimited)
Packaging Type	Not specified	Tape & Reel (TR)	Bulk	Tape & Reel (TR)
Inventory Status	679 Pcs New Original In Stock	699 Pcs New Original In Stock	7306 Pcs New Original In Stock	1057 Pcs New Original In Stock

Engineering Selection Recommendations

CZRQC22VB-HF (Comchip Technology)

This substitute is the primary recommendation for direct replacement. It maintains identical electrical specifications (22 V, 125 mW, 55 Ohms impedance) and package footprint (0402C/SOD-923F). The part features improved tolerance (±2.5% versus ±3%) and active product status. ROHS3 compliance and MSL 1 rating match the original specification. Tape & Reel packaging is suitable for production environments. This part provides the closest functional equivalence with enhanced reliability through active manufacturer support.

BZX884-B22,315 (NXP Semiconductors)

This substitute offers increased power dissipation capability (250 mW versus 125 mW) with tighter tolerance (±2%). The extended operating temperature range (-65°C to 150°C) exceeds original specifications. Package footprint differs (SOD-882/DFN1006-2 versus 0402C/SOD-923F), requiring PCB layout modification. Lower reverse leakage current (50 nA @ 15.4 V) provides improved performance. Active product status and bulk packaging support high-volume applications. RoHS and MSL compliance information is not provided in the specification.

BZX884-C22,315 (Nexperia USA Inc.)

This substitute provides 250 mW power rating with automotive-grade qualification (AEC-Q100). Tolerance specification (±5%) is wider than the original part. Package footprint differs (SOD-882/DFN1006-2), requiring PCB redesign. Extended temperature range (-65°C to 150°C) and lower reverse leakage (50 nA @ 15.4 V) enhance performance margins. ROHS3 compliance and MSL 1 rating are confirmed. Tape & Reel packaging supports production requirements. Automotive qualification enables use in automotive applications where the original part is not suitable.

Frequently Asked Questions (FAQ)

Q: Can CZRQC22VB-HF directly replace CZRQR22VB-HF without PCB modification?

A: Yes. CZRQC22VB-HF maintains identical package footprint (0402C/SOD-923F), electrical specifications (22 V, 125 mW, 55 Ohms), and operating temperature range. No PCB layout changes are required. The improved tolerance (±2.5%) provides enhanced performance.

Q: What are the package differences between the substitute parts?

A: CZRQC22VB-HF uses 0402 (1006 Metric) package with SOD-923F footprint, identical to the original. BZX884-B22,315 and BZX884-C22,315 use SOD-882 package with DFN1006-2 footprint. These package differences require PCB redesign and cannot be used as direct drop-in replacements without layout modification.

Q: Which substitute part has the best tolerance specification?

A: BZX884-B22,315 offers the tightest tolerance at ±2%, followed by CZRQC22VB-HF at ±2.5%. The original CZRQR22VB-HF specifies ±3%, and BZX884-C22,315 specifies ±5%. Tighter tolerance provides improved voltage regulation accuracy.

Q: Are all substitute parts ROHS3 compliant?

A: CZRQC22VB-HF and BZX884-C22,315 explicitly state ROHS3 compliance. BZX884-B22,315 does not provide RoHS compliance information in the specification. Verify RoHS status with the manufacturer if compliance is required for your application.

Q: What is the temperature range difference between substitutes?

A: The original CZRQR22VB-HF and CZRQC22VB-HF operate from -55°C to 125°C. BZX884-B22,315 and BZX884-C22,315 extend the range to -65°C to 150°C, providing wider operating margins. This extended range is beneficial for automotive and industrial applications.

Q: Can BZX884 series parts be used in applications requiring 125 mW maximum power?

A: Yes. BZX884-B22,315 and BZX884-C22,315 are rated for 250 mW, which exceeds the 125 mW requirement. Higher power rating provides additional thermal margin and does not create compatibility issues in circuits designed for 125 mW operation.

Q: What is the difference between BZX884-B22,315 and BZX884-C22,315?

A: Both parts share identical electrical specifications (22 V, 250 mW, 55 Ohms, -65°C to 150°C). BZX884-C22,315 includes automotive-grade qualification (AEC-Q100) and has wider tolerance (±5% versus ±2%). BZX884-B22,315 is packaged in bulk; BZX884-C22,315 is supplied in Tape & Reel format.

Q: Is MSL 1 (Unlimited) rating maintained across all substitutes?

A: CZRQC22VB-HF and BZX884-C22,315 explicitly specify MSL 1 (Unlimited). BZX884-B22,315 does not provide MSL information. MSL 1 rating indicates no moisture sensitivity and unlimited shelf life without special storage requirements.

Q: Which substitute is recommended for new design implementation?

A: CZRQC22VB-HF is recommended for new designs requiring direct compatibility with existing PCB layouts. For new designs without layout constraints, BZX884-C22,315 offers automotive qualification and extended temperature range. BZX884-B22,315 is suitable for high-volume applications requiring maximum inventory availability.

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