Equivalent & Substitute Parts for CD0603-Z22 Zener Diode

Part Overview

The CD0603-Z22 from Bourns Inc. is a Zener Diode with a nominal Zener voltage of 22 V, maximum power dissipation of 150 mW, and ±5% tolerance, designed for surface mount applications in the 0603 (1608 Metric) package. The product is currently classified as Obsolete, necessitating identification of suitable substitute models for continued use in relevant electronic assemblies. Substitute parts must match all functional and mechanical requirements as specified for reliable direct replacement.

Key Parameters

Parameter	CD0603-Z22
Manufacturer	Bourns Inc.
Category	Diodes, Zener
Voltage - Zener (Nom) (Vz)	22 V
Tolerance	±5%
Power - Max	150 mW
Impedance (Max) (Zzt)	55 Ohms
Current - Reverse Leakage @ Vr	100 nA @ 17 V
Operating Temperature	-55°C ~ 125°C
Mounting Type	Surface Mount
Package / Case	0603 (1608 Metric)
Supplier Device Package	0603
RoHS Status	ROHS3 Compliant
MSL	1 (Unlimited)
REACH Status	REACH Unaffected

Substitute Part Grouping Explanation

Substitution is defined by adherence to the provided electrical and mechanical parameters: Zener voltage (Nom), tolerance, maximum power, impedance, reverse leakage current at voltage, operating temperature range, mounting type, and package/case. The substitutes listed (CZRU52C22, CZRU52C22-HF, CZRUR52C22, CZRUR52C22-HF) from Comchip Technology match every key parameter listed above for direct equivalence in performance and form factor within the Zener diode product category.

Parameter Comparison

Parameter	CD0603-Z22	CZRU52C22	CZRU52C22-HF	CZRUR52C22	CZRUR52C22-HF
Manufacturer	Bourns Inc.	Comchip Technology	Comchip Technology	Comchip Technology	Comchip Technology
Category	Diodes, Zener	Diodes, Zener	Diodes, Zener	Diodes, Zener	Diodes, Zener
Voltage - Zener (Nom) (Vz)	22 V	22 V	22 V	22 V	22 V
Tolerance	±5%	±5%	±5%	±5%	±5%
Power - Max	150 mW	150 mW	150 mW	150 mW	150 mW
Impedance (Max) (Zzt)	55 Ohms	55 Ohms	55 Ohms	55 Ohms	55 Ohms
Current - Reverse Leakage @ Vr	100 nA @ 17 V	100 nA @ 17 V	100 nA @ 17 V	100 nA @ 17 V	100 nA @ 17 V
Operating Temperature	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	0603 (1608 Metric)	2-SMD, No Lead	2-SMD, No Lead	2-SMD, No Lead	2-SMD, No Lead
Supplier Device Package	0603	0603/SOD-523F	0603/SOD-523F	0603/SOD-523F	0603/SOD-523F
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

The CD0603-Z22 is obsolete; all listed substitute models (CZRU52C22, CZRU52C22-HF, CZRUR52C22, CZRUR52C22-HF) are active and meet RoHS3 compliance, MSL 1 rating, and REACH unaffected status. These substitutes are direct replacements in terms of regulatory compliance for applications requiring equivalent certifications and product status.

Frequently Asked Questions (FAQ)

Q1: What parameters are required for direct substitution of Zener diodes in the 0603 package?

Substitution requires matching voltage - Zener (Nom), tolerance, power dissipation, maximum impedance, reverse leakage current at voltage, operating temperature, mounting type, and package/case.

Q2: Are there any packaging differences between CD0603-Z22 and substitute parts?

The main part uses the 0603 (1608 Metric) package, while substitutes use 0603/SOD-523F and 2-SMD, No Lead formats. All are surface mount configurations compatible with footprint requirements as listed.

Q3: Are the electrical parameters identical among substitutes and the original part?