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Equivalent & Substitute Parts for Bourns CD1005-Z24 Zener Diode
Part Overview
The Bourns CD1005-Z24 is a 24 V, 200 mW, ±5% tolerance surface-mount Zener diode in a 1005 (2512 Metric) package. It is classified under the diodes, Zener category and features a reverse leakage of 100 nA @ 18 V, a maximum Zener impedance of 80 Ohms, and an operating temperature range from -55°C to 125°C. This device is classified as obsolete, necessitating the identification of functionally equivalent and substitute diodes with strictly matching electrical and mechanical parameters to ensure uninterrupted production and long-term design support.
Substiute Parts
Key Parameters
| Parameter | Specification |
|---|---|
| Manufacturer Part Number | CD1005-Z24 |
| Category | Diodes, Zener |
| Voltage - Zener (Nom) (Vz) | 24 V |
| Tolerance | ±5% |
| Power - Max | 200 mW |
| Impedance (Max) (Zzt) | 80 Ohms |
| Current - Reverse Leakage @ Vr | 100 nA @ 18 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
Substitute and equivalent parts are grouped by matching the following strictly defined parameters: Zener voltage (24 V nominal), tolerance (±5%), maximum power dissipation (200 mW), maximum Zener impedance (80 Ohms), reverse leakage current (100 nA @ 18 V), identical operating temperature range (-55°C ~ 125°C), surface-mount type with 1005 (2512 Metric) package, and compliance statuses (RoHS3, REACH). Only parts providing all of these specifications are listed as direct substitutes or parametric equivalents.
Parameter Comparison
| Parameter | CD1005-Z24 (Bourns) |
CZRF52C24 (Comchip) |
CZRF52C24-HF (Comchip) |
CZRFR52C24 (Comchip) |
CZRFR52C24-HF (Comchip) |
|---|---|---|---|---|---|
| Category | Diodes, Zener | Diodes, Zener | Diodes, Zener | Diodes, Zener | Diodes, Zener |
| Voltage - Zener (Nom) (Vz) | 24 V | 24 V | 24 V | 24 V | 24 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 @ 18 V | 100 nA @ 18 V | 100 nA @ 18 V | 100 nA @ 18 V | 100 nA @ 18 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 |
| Moisture Sensitivity Level (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 main part, Bourns CD1005-Z24, is obsolete. All substitute parts listed—Comchip Technology CZRF52C24, CZRF52C24-HF, CZRFR52C24, and CZRFR52C24-HF—are active and meet equivalent electrical, mechanical, and compliance parameters including RoHS3 and REACH status, and share the same MSL rating. These substitutes align with all specified criteria essential for direct replacement in existing designs.
Frequently Asked Questions (FAQ)
Q1: What criteria are used to determine substitute or equivalent Zener diodes for the CD1005-Z24?
A1: Substitution is based on identical Zener nominal voltage (24 V), tolerance (±5%), power rating (200 mW), maximum Zener impedance (80 Ohms), reverse leakage current (100 nA @ 18 V), surface-mount package (1005, 2512 Metric), operating temperature range (-55°C ~ 125°C), RoHS3 and REACH compliance, and MSL 1 rating.
Q2: Are all listed substitute parts guaranteed to fit the original PCB footprint?
A2: All listed substitutes provide the same 1005 (2512 Metric) surface-mount package as the Bourns CD1005-Z24, ensuring mechanical compatibility.
Q3: Can any of these substitutes be used directly in the same circuit as the original CD1005-Z24?
A3: All parts listed share matching electrical ratings and package type with the CD1005-Z24 based on the provided parameters.
Q4: Do the substitute Zener diodes maintain equivalent compliance status as the original?
A4: Yes: all listed substitutes are ROHS3 compliant, REACH unaffected, and have the same MSL (1, unlimited).
Q5: Are these substitute parts currently active for procurement?
A5: According to the provided data, all Comchip Technology substitute parts are listed with active product status and inventory available.
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