CLL4702 BK Zener Diode Equivalent & Substitute Parts

Part Overview

The CLL4702 BK is a 15 V, 500 mW Zener diode manufactured by Central Semiconductor Corp in SOD-80 (DO-213AC, MINI-MELF) surface mount package. This component is classified as obsolete, indicating discontinued production and limited availability for new designs. Identification of equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support ongoing production requirements for applications utilizing this Zener diode specification.

Substiute Parts

CLL4702 BK

Central Semiconductor CorpIn Stock: 721CLL4702 BK Datasheet

Current PartRFQ

CMHZ4702 BK

Central Semiconductor CorpIn Stock: 763CMHZ4702 BK Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CLL4702 BK is determined by electrical parameter equivalence and mechanical compatibility. The primary substitute identified is the CMHZ4702 BK, which maintains identical electrical specifications across all critical parameters: 15 V nominal Zener voltage, 500 mW maximum power dissipation, ±5% tolerance, 50 nA reverse leakage current at 11.4 V, and 1.5 V maximum forward voltage at 100 mA.

The key substitution criteria are:

• Zener voltage rating: 15 V (nominal)
• Power dissipation capability: 500 mW (maximum)
• Voltage tolerance: ±5%
• Reverse leakage characteristics: 50 nA @ 11.4 V
• Forward voltage characteristics: 1.5 V @ 100 mA
• Surface mount configuration

The CMHZ4702 BK differs from the CLL4702 BK in package format (SOD-123 versus SOD-80) and maximum operating temperature (150°C versus 200°C junction temperature). These differences require evaluation based on specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

The CMHZ4702 BK is the primary substitute for the obsolete CLL4702 BK based on electrical parameter equivalence. Both components are manufactured by Central Semiconductor Corp and maintain identical Zener voltage, power rating, tolerance, leakage current, and forward voltage specifications.

Selection of CMHZ4702 BK is supported by the following factors:

• Active product status ensures ongoing availability and supply chain continuity
• Electrical specifications are fully equivalent to the CLL4702 BK across all critical parameters
• Surface mount configuration is maintained
• REACH compliance status is documented (REACH Unaffected)
• Identical ECCN and HTSUS classifications confirm regulatory equivalence

Design considerations for substitution include:

• Package format change from SOD-80 to SOD-123 requires PCB layout modification
• Maximum operating temperature is reduced from 200°C to 150°C junction temperature; applications operating above 150°C junction temperature require thermal analysis
• Physical dimensions differ between SOD-80 and SOD-123 packages; mechanical fit verification is necessary

Frequently Asked Questions (FAQ)

Q: What is the primary reason the CLL4702 BK requires substitution?

A: The CLL4702 BK is classified as obsolete, indicating discontinued production. The CMHZ4702 BK is an active product with identical electrical specifications, providing supply continuity.

Q: Are the electrical specifications of CMHZ4702 BK identical to CLL4702 BK?

A: Yes. Both components share identical Zener voltage (15 V), power dissipation (500 mW), tolerance (±5%), reverse leakage current (50 nA @ 11.4 V), and forward voltage (1.5 V @ 100 mA) specifications.

Q: What is the primary difference between CLL4702 BK and CMHZ4702 BK?

A: The primary differences are package format (SOD-80 versus SOD-123) and maximum operating temperature (200°C versus 150°C junction temperature). Electrical performance is equivalent.

Q: Does the package change from SOD-80 to SOD-123 affect circuit performance?

A: Package format change does not affect electrical performance. However, SOD-123 and SOD-80 have different physical dimensions and footprints, requiring PCB layout modification.

Q: Can CMHZ4702 BK be used in applications requiring 200°C junction temperature operation?

A: No. CMHZ4702 BK is rated to 150°C maximum junction temperature, compared to 200°C for CLL4702 BK. Applications requiring operation above 150°C junction temperature require alternative components.

Q: Are there regulatory or compliance differences between the two parts?

A: No. Both components share identical ECCN (EAR99) and HTSUS (8541.10.0050) classifications. CMHZ4702 BK includes documented REACH compliance status (REACH Unaffected).

Q: What additional parts are listed as substitutes for CMHZ4702 BK?

A: The CMHZ4702 BK documentation references DDZ9702-7, DDZ9702S-7, DDZ15S-7, DDZ15Q-7, and MMSZ5245B-7-F as additional substitutes. These parts maintain the 15 V Zener voltage and 500 mW power rating specifications.