CD1005-Z20 Equivalent & Substitute Parts

Part Overview

The CD1005-Z20 is a Zener diode rated at 20 V nominal voltage with 200 mW maximum power dissipation in a 1005 surface mount package. Manufactured by Bourns Inc., this component is classified as obsolete. Due to its obsolete product status, equivalent substitute parts from active manufacturers are necessary to maintain design continuity and ensure ongoing component availability for production and repair applications.

Key Parameters

Parameter	Value
Voltage - Zener (Nom)	20 V
Power - Max	200 mW
Tolerance	±5%
Impedance (Max)	50 Ohms
Current - Reverse Leakage @ Vr	100 nA @ 15 V
Operating Temperature Range	-55°C ~ 125°C
Mounting Type	Surface Mount
Package / Case	1005 (2512 Metric)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the CD1005-Z20 is determined by strict equivalence across the following critical parameters:

Voltage - Zener (Nom): 20 V
Power - Max: 200 mW
Tolerance: ±5%
Impedance (Max): 50 Ohms
Current - Reverse Leakage @ Vr: 100 nA @ 15 V
Operating Temperature Range: -55°C ~ 125°C
Mounting Type: Surface Mount
Package / Case: 1005 (2512 Metric)
RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level: 1 (Unlimited)

All substitute parts listed below meet these electrical and mechanical specifications without deviation. Substitute parts are classified into two categories: Direct Manufacturer Parts and Parametric Equivalents. Direct Manufacturer Parts are functionally identical replacements from alternative manufacturers. Parametric Equivalents share all critical electrical and mechanical characteristics and are interchangeable at the circuit level.

Parameter Comparison

Parameter	CD1005-Z20 (Bourns)	CZRF52C20 (Comchip)	CZRF52C20-HF (Comchip)	CZRFR52C20 (Comchip)	CZRFR52C20-HF (Comchip)
Voltage - Zener (Nom)	20 V	20 V	20 V	20 V	20 V
Power - Max	200 mW	200 mW	200 mW	200 mW	200 mW
Tolerance	±5%	±5%	±5%	±5%	±5%
Impedance (Max)	50 Ohms	50 Ohms	50 Ohms	50 Ohms	50 Ohms
Current - Reverse Leakage @ Vr	100 nA @ 15 V	100 nA @ 15 V	100 nA @ 15 V	100 nA @ 15 V	100 nA @ 15 V
Voltage - Forward (Vf) (Max) @ If	Not specified	900 mV @ 10 mA	900 mV @ 10 mA	900 mV @ 10 mA	900 mV @ 10 mA
Operating Temperature Range	-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	1005 (2512 Metric)	1005 (2512 Metric)	1005 (2512 Metric)	1005 (2512 Metric)	1005 (2512 Metric)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Obsolete	Active	Active	Active	Active

Engineering Selection Recommendations

The CD1005-Z20 is obsolete and no longer manufactured by Bourns Inc. All substitute parts listed are manufactured by Comchip Technology and maintain active product status, ensuring long-term availability and supply chain continuity.

All substitute parts are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements. The Comchip Technology alternatives (CZRF52C20, CZRF52C20-HF, CZRFR52C20, CZRFR52C20-HF) are electrically and mechanically equivalent to the CD1005-Z20 across all specified parameters.

Selection between substitute options should be based on inventory availability and packaging requirements. All listed parts are supplied in Tape & Reel (TR) packaging and are suitable for automated assembly processes.

Frequently Asked Questions (FAQ)

Q: Can CZRF52C20 and CZRF52C20-HF be used interchangeably with CD1005-Z20?

A: Yes. Both Comchip parts meet all electrical and mechanical specifications of the CD1005-Z20, including voltage rating, power dissipation, tolerance, impedance, leakage current, operating temperature range, and package dimensions. The "-HF" designation indicates a high-frequency variant but does not alter the core electrical parameters relevant to Zener diode substitution.

Q: What is the difference between CZRF52C20 and CZRFR52C20?

A: Both parts are parametrically equivalent with identical electrical specifications. The base product numbers differ (CZRF52 versus CZRFR52), but this distinction does not affect functional compatibility or circuit performance when substituting for CD1005-Z20.

Q: Are the substitute parts available in the same package as the original CD1005-Z20?

A: Yes. All substitute parts use the 1005 (2512 Metric) surface mount package, which is mechanically and electrically compatible with the original CD1005-Z20 package footprint.

Q: Do the substitute parts meet the same environmental and regulatory standards as CD1005-Z20?

A: Yes. All substitute parts are ROHS3 compliant, REACH unaffected, and have Moisture Sensitivity Level 1 (Unlimited), matching the compliance profile of the original part.

Q: What is the primary reason for substituting CD1005-Z20?

A: The CD1005-Z20 is obsolete and no longer manufactured. Comchip Technology alternatives provide equivalent functionality with active product status and assured long-term availability.

Q: Can these parts be used in high-frequency applications?

A: The electrical parameters provided do not include frequency-dependent specifications. Selection of high-frequency variants (indicated by "-HF" designation) should be based on circuit requirements beyond the scope of basic Zener diode substitution criteria.

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