CD1005-Z27 Equivalent & Substitute Zener Diode Reference

Part Overview

The Bourns Inc. CD1005-Z27 is an obsolete surface mount Zener diode rated for 27 V nominal Zener voltage, 200 mW maximum power, and housed in a 1005 (2512 Metric) package. It features ±5% voltage tolerance and 80 Ohms maximum impedance. Because this part is obsolete, sourcing exact replacements is necessary to preserve form, fit, and function in existing designs. Substitutes must strictly match critical electrical and mechanical specifications as well as regulatory statuses.

Key Parameters

Parameter	Value
Manufacturer Part Number	CD1005-Z27
Category	Diodes, Zener
Voltage - Zener (Nom) (Vz)	27 V
Tolerance	±5%
Power - Max	200 mW
Impedance (Max) (Zzt)	80 Ohms
Current - Reverse Leakage @ Vr	100 nA @ 20 V
Operating Temperature	-55°C ~ 125°C
Mounting Type	Surface Mount
Package / Case	1005 (2512 Metric)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
REACH Status	REACH Unaffected

Substitute Part Grouping Explanation

Substitutes and equivalents for the CD1005-Z27 Zener diode are identified based solely on the following key parameters: Zener voltage (27 V nominal), voltage tolerance (±5%), maximum power rating (200 mW), impedance (80 Ohms max), reverse leakage current (100 nA @ 20 V), package size (1005/2512 Metric), and surface mount mounting. Only those parts which strictly meet or exceed the main part's electrical and mechanical attributes are considered, and all listed alternatives comply with RoHS and REACH standards as provided in the input data.

Parameter Comparison

Parameter	CD1005-Z27 Bourns Inc.	CZRF52C27 Comchip Technology	CZRF52C27-HF Comchip Technology	CZRFR52C27 Comchip Technology	CZRFR52C27-HF Comchip Technology
Category	Diodes, Zener	Diodes, Zener	Diodes, Zener	Diodes, Zener	Diodes, Zener
Voltage - Zener (Nom) (Vz)	27 V	27 V	27 V	27 V	27 V
Tolerance	±5%	±5%	±5%	±5%	±5%
Power - Max	200 mW	200 mW	200 mW	200 mW	200 mW
Impedance (Max) (Zzt)	80 Ohms	80 Ohms	80 Ohms	80 Ohms	80 Ohms
Current - Reverse Leakage @ Vr	100 nA @ 20 V	100 nA @ 20 V	100 nA @ 20 V	100 nA @ 20 V	100 nA @ 20 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	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
MSL	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected
Product Status	Obsolete	Active	Active	Active	Active

Engineering Selection Recommendations

The Bourns Inc. CD1005-Z27 is designated as obsolete, while listed substitute Zener diodes (CZRFR52C27, CZRFR52C27-HF, CZRF52C27, CZRF52C27-HF) are listed as active. All substitute part numbers are classified as ROHS3 Compliant, have a Moisture Sensitivity Level (MSL) of 1 (Unlimited), and REACH Unaffected status. These compliance attributes ensure direct substitution viability for designs requiring current environmental and safety certifications.

Frequently Asked Questions (FAQ)

Q1: What criteria determine if a Zener diode is a valid substitute for CD1005-Z27?
A1: Substitutes must match the voltage - Zener (27 V), tolerance (±5%), maximum power rating (200 mW), maximum impedance (80 Ohms), reverse leakage current (100 nA @ 20 V), package/case (1005/2512 Metric), and have compatible mounting, RoHS, and REACH statuses as specified.

Q2: Are package size and mounting type critical for Zener diode substitution?
A2: Yes. The replacement part must use the same package/case (1005/2512 Metric) and support surface mount mounting to ensure compatibility with existing PCB layouts.

Q3: Are the listed Comchip Technology substitute diodes form, fit, and function compatible?
A3: All listed substitutes have identical key parameters and compliance credentials, ensuring compatibility with the CD1005-Z27 in form, fit, and function terms given the provided data.

Q4: Do compliance statuses like RoHS and REACH affect substitute selection?
A4: Yes. Substitute parts must meet the same RoHS and REACH statuses to adhere to regulatory and environmental requirements.

Q5: Is there any impact of using an obsolete Zener diode in new designs?
A5: Use of obsolete parts in new designs is not recommended when active, compliant substitutes with identical specifications are available. The listed substitutes are active and adhere to the same compliance standards as the original part.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message