CLL4627 BK Zener Diode Equivalent & Substitute Parts

Part Overview

The CLL4627 BK 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, necessitating identification of active equivalent parts for new designs and ongoing production requirements. The substitute parts listed maintain electrical equivalence while offering improved product status and availability.

Substiute Parts

CLL4627 BK

Central Semiconductor CorpIn Stock: 833CLL4627 BK Datasheet

Current PartRFQ

CMHZ4627 BK

Central Semiconductor CorpIn Stock: 1257CMHZ4627 BK Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CLL4627 BK is determined by the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Zener voltage: 6.2 V nominal
• Tolerance: ±5%
• Power rating: 500 mW maximum
• Impedance: 1200 Ohms maximum
• Reverse leakage current: 10 µA @ 5 V
• Surface mount configuration

Package Consideration: The CLL4627 BK uses SOD-80 packaging. Substitute parts may employ alternative surface mount packages (SOD-123) provided the electrical specifications remain within the defined parameters and the physical footprint is compatible with the target application.

Product Status: The CLL4627 BK is obsolete. The CMHZ4627 BK is an active equivalent from the same manufacturer with identical electrical specifications, making it the primary substitute for ongoing production and new designs.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: CMHZ4627 BK

The CMHZ4627 BK is the recommended substitute for the obsolete CLL4627 BK. Both components are manufactured by Central Semiconductor Corp and share identical electrical specifications for Zener voltage, tolerance, power rating, impedance, and reverse leakage current. The CMHZ4627 BK is currently in active production status with 1150 units in stock, ensuring supply chain continuity.

Package Transition: The transition from SOD-80 to SOD-123 packaging requires PCB layout verification. Both packages are surface mount configurations; however, physical dimensions and land pattern footprints differ. Design teams must confirm that SOD-123 footprints are compatible with existing board layouts or implement appropriate design modifications.

Operating Temperature Consideration: The CLL4627 BK supports an operating temperature range of -65°C to 200°C, while the CMHZ4627 BK operates from -65°C to 150°C. Applications requiring junction temperatures above 150°C must evaluate thermal management or seek alternative solutions.

Compliance and Certifications: Both parts carry ECCN EAR99 classification and HTSUS code 8541.10.0050. The CMHZ4627 BK includes REACH Unaffected status, confirming compliance with European chemical regulations.

Frequently Asked Questions (FAQ)

Q: Can the CMHZ4627 BK directly replace the CLL4627 BK in existing designs?

A: Electrical substitution is valid. The CMHZ4627 BK maintains identical Zener voltage (6.2 V), tolerance (±5%), power rating (500 mW), impedance (1200 Ohms), and reverse leakage current (10 µA @ 5 V). However, the package change from SOD-80 to SOD-123 requires PCB footprint verification and potential layout modifications.

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

A: SOD-80 (DO-213AC, MINI-MELF) and SOD-123 are both surface mount packages for small signal diodes. They differ in physical dimensions and land pattern footprints. PCB design files must be updated to accommodate the SOD-123 footprint if transitioning from SOD-80.

Q: Are there temperature limitations when substituting the CMHZ4627 BK?

A: The CLL4627 BK operates to 200°C junction temperature, while the CMHZ4627 BK is rated to 150°C. Applications requiring operation above 150°C must retain the original CLL4627 BK or identify alternative components with higher temperature ratings.

Q: What does "obsolete" status mean for the CLL4627 BK?

A: Obsolete status indicates the manufacturer has discontinued production. The CLL4627 BK is no longer available from primary sources. The CMHZ4627 BK is the active equivalent and should be used for new designs and production orders.

Q: Are the forward voltage characteristics identical between CLL4627 BK and CMHZ4627 BK?

A: Forward voltage differs slightly. The CLL4627 BK specifies 1 V maximum at 200 mA, while the CMHZ4627 BK specifies 1.5 V maximum at 100 mA. These measurements are taken at different current levels and do not affect Zener regulation performance in typical applications.

Q: What compliance certifications apply to these parts?

A: Both the CLL4627 BK and CMHZ4627 BK carry ECCN EAR99 classification and HTSUS code 8541.10.0050. The CMHZ4627 BK additionally carries REACH Unaffected status, confirming compliance with European chemical substance regulations.