CLL4627 TR Zener Diode Equivalent & Substitute Parts

Part Overview

The CLL4627 TR is a 6.2 V Zener diode rated for 500 mW power dissipation in a surface mount SOD-80 (DO-213AC, MINI-MELF) package. This component is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and production continuity. 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

CLL4627 TR

Central Semiconductor CorpIn Stock: 1073CLL4627 TR Datasheet

Current PartRFQ

CMHZ4627 TR

Central Semiconductor CorpIn Stock: 932CMHZ4627 TR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CLL4627 TR is determined by electrical parameter equivalence and package compatibility. The primary substitute identified is the CMHZ4627 TR, which maintains identical zener voltage (6.2 V), tolerance (±5%), power rating (500 mW), impedance specification (1200 Ohms maximum), and reverse leakage characteristics (10 µA @ 5 V).

The critical substitution criteria are:

• Zener voltage nominal value and tolerance band
• Maximum power dissipation rating
• Maximum impedance specification
• Reverse leakage current specification
• Surface mount package type

The CMHZ4627 TR differs in package format (SOD-123 versus SOD-80), forward voltage characteristic (1.5 V @ 100 mA versus 1 V @ 200 mA), and operating temperature upper limit (150°C versus 200°C). These differences require evaluation within specific application contexts.

Parameter Comparison

Engineering Selection Recommendations

The CMHZ4627 TR is the primary substitute for the obsolete CLL4627 TR based on electrical parameter equivalence. Both components share identical zener voltage, tolerance, power rating, impedance, and reverse leakage specifications. The CMHZ4627 TR maintains active product status, ensuring continued availability and supply chain support.

Package format differs between the two parts: the CLL4627 TR uses SOD-80 (MINI-MELF) while the CMHZ4627 TR uses SOD-123. This distinction requires PCB layout modification and component footprint redesign. The SOD-123 package is smaller and more widely supported in modern surface mount assembly processes.

Operating temperature range differs at the upper limit: the CLL4627 TR operates to 200°C while the CMHZ4627 TR operates to 150°C. Applications requiring junction temperatures above 150°C require evaluation of thermal management and circuit design parameters.

Forward voltage characteristics differ: the CLL4627 TR specifies 1 V @ 200 mA while the CMHZ4627 TR specifies 1.5 V @ 100 mA. This difference reflects measurement conditions rather than fundamental device behavior and does not affect zener regulation performance.

Frequently Asked Questions (FAQ)

Q: Can the CMHZ4627 TR directly replace the CLL4627 TR without PCB modification?

A: No. The CMHZ4627 TR uses SOD-123 package while the CLL4627 TR uses SOD-80 (MINI-MELF) package. PCB footprint redesign is required. However, electrical performance is equivalent for zener regulation applications.

Q: What is the significance of the different operating temperature ranges?

A: The CLL4627 TR operates to 200°C junction temperature while the CMHZ4627 TR operates to 150°C. Applications operating above 150°C junction temperature require thermal analysis to confirm the CMHZ4627 TR remains within specification.

Q: Are the forward voltage specifications different between these parts?

A: The specifications reflect different measurement conditions (1 V @ 200 mA for CLL4627 TR versus 1.5 V @ 100 mA for CMHZ4627 TR). Both parts function identically in zener regulation circuits where forward voltage is not the primary operating mode.

Q: Why is the CLL4627 TR classified as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. The CMHZ4627 TR provides electrical equivalence with active product status and ongoing supply availability.

Q: What package considerations apply to substitution?

A: SOD-80 and SOD-123 are both surface mount packages but have different physical dimensions and land patterns. Component placement equipment and PCB design must accommodate the selected package format.

Q: Are there additional substitute options beyond the CMHZ4627 TR?

A: The CMHZ4627 TR is identified as the primary substitute based on electrical parameter equivalence. Additional cross-reference options (DDZ6V2B-7, MMSZ5234B-HE3-08, MMSZ5234B-TP, MMSZ5234B-G3-08, DDZ9691S-7) are available through the CMHZ4627 TR substitution chain and require individual parameter verification for specific applications.