CLL4703 TR Zener Diode Equivalent & Substitute Parts

Part Overview

The CLL4703 TR is a 16 V, 500 mW Zener diode manufactured by Central Semiconductor Corp in SOD-80 (DO-213AC, MINI-MELF) surface mount packaging. This component is classified as obsolete, necessitating identification of active equivalent parts for new designs and ongoing production requirements. The part operates across a temperature range of -65°C to 200°C and maintains ±5% voltage tolerance with specified reverse leakage characteristics.

Substiute Parts

CLL4703 TR

Central Semiconductor CorpIn Stock: 759CLL4703 TR Datasheet

Current PartRFQ

CMHZ4703 TR

Central Semiconductor CorpIn Stock: 800CMHZ4703 TR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CLL4703 TR is determined by electrical parameter equivalence and mechanical compatibility. The primary substitute identified is the CMHZ4703 TR, which maintains identical electrical specifications across all critical parameters: 16 V nominal Zener voltage, 500 mW maximum power dissipation, ±5% tolerance, 50 nA reverse leakage at 12.1 V, and 1.5 V maximum forward voltage at 100 mA.

The key differentiator between the main part and its substitute is the package format. The CLL4703 TR uses SOD-80 (MINI-MELF) packaging, while the CMHZ4703 TR uses SOD-123 packaging. Both are surface mount configurations suitable for automated assembly. The CMHZ4703 TR operates across a reduced temperature range of -65°C to 150°C compared to the CLL4703 TR's -65°C to 200°C range.

The CMHZ4703 TR holds active product status with current inventory availability, making it the primary substitute for obsolete CLL4703 TR applications where the SOD-123 package footprint is acceptable.

Parameter Comparison

Engineering Selection Recommendations

The CMHZ4703 TR is the direct electrical equivalent to the CLL4703 TR for 16 V, 500 mW Zener diode applications. Both parts share identical nominal Zener voltage, power rating, tolerance, reverse leakage characteristics, and forward voltage specifications.

Selection of the CMHZ4703 TR as a substitute requires evaluation of two factors:

Package Compatibility: The transition from SOD-80 (MINI-MELF) to SOD-123 packaging necessitates PCB footprint modification. SOD-123 is a smaller surface mount package than SOD-80, requiring updated land pattern design and assembly tooling validation.

Temperature Range: The CMHZ4703 TR operates to a maximum junction temperature of 150°C, compared to the CLL4703 TR's 200°C maximum. Applications requiring sustained operation above 150°C junction temperature require alternative component selection or thermal management reassessment.

The CMHZ4703 TR holds active product status with REACH compliance documentation, supporting long-term supply chain continuity for new designs and production transitions from the obsolete CLL4703 TR.

Frequently Asked Questions (FAQ)

Q: Can the CMHZ4703 TR directly replace the CLL4703 TR without circuit modification?

A: Electrical substitution is direct; all voltage, current, and power specifications are identical. PCB layout modification is required due to package format change from SOD-80 to SOD-123.

Q: What is the primary difference between CLL4703 TR and CMHZ4703 TR?

A: The parts are electrically equivalent 16 V, 500 mW Zener diodes. The CLL4703 TR uses SOD-80 packaging and operates to 200°C junction temperature. The CMHZ4703 TR uses SOD-123 packaging and operates to 150°C junction temperature.

Q: Is the CMHZ4703 TR suitable for high-temperature applications?

A: The CMHZ4703 TR maximum junction temperature is 150°C. Applications requiring operation above this temperature require alternative component selection.

Q: What is the inventory status of these parts?

A: The CLL4703 TR is obsolete with 720 pieces in stock. The CMHZ4703 TR is active with 727 pieces in stock.

Q: Are both parts RoHS and REACH compliant?

A: The CMHZ4703 TR carries REACH Unaffected status. Both parts share ECCN EAR99 and HTSUS 8541.10.0050 classifications.

Q: What is the physical size difference between SOD-80 and SOD-123 packages?

A: SOD-123 is a smaller surface mount package than SOD-80 (MINI-MELF). Specific dimensional data requires reference to package outline drawings from the manufacturer.

Q: Can the CLL4703 TR be used in new designs?

A: The CLL4703 TR is classified as obsolete. New designs should specify the active CMHZ4703 TR or evaluate alternative 16 V Zener diodes with required package and temperature specifications.