CLL4626 BK Zener Diode Equivalent & Substitute Parts

Part Overview

The CLL4626 BK is a 5.6 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 part maintains identical electrical specifications while offering improved product status and availability through active manufacturing channels.

Substiute Parts

CLL4626 BK

Central Semiconductor CorpIn Stock: 870CLL4626 BK Datasheet

Current PartRFQ

CMHZ4626 BK

Central Semiconductor CorpIn Stock: 923CMHZ4626 BK Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CLL4626 BK is determined by the following critical electrical and mechanical parameters:

Electrical Equivalence Criteria:

• Zener voltage (Vz) of 5.6 V nominal
• Tolerance of ±5%
• Maximum power rating of 500 mW
• Maximum impedance (Zzt) of 1400 Ohms
• Reverse leakage current of 10 µA @ 4 V

Mechanical Compatibility Criteria:

• Surface mount mounting type
• Package compatibility with circuit board layout and thermal requirements

The CMHZ4626 BK meets all electrical specifications and maintains surface mount compatibility. The primary difference is the package format (SOD-123 versus SOD-80), which requires PCB layout verification but does not affect electrical performance within the specified parameters.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: CMHZ4626 BK

The CMHZ4626 BK is the direct electrical equivalent to the CLL4626 BK. All critical electrical parameters—zener voltage, tolerance, power rating, impedance, and reverse leakage current—are identical. The substitute part is manufactured by the same supplier and carries active product status, ensuring continued availability and manufacturing support.

Compliance and Certification: Both parts share identical ECCN (EAR99) and HTSUS (8541.10.0050) classifications. The CMHZ4626 BK carries REACH Unaffected status, confirming regulatory compliance for European markets.

Package Consideration: The transition from SOD-80 to SOD-123 packaging requires PCB footprint verification. Both packages are surface mount formats with different physical dimensions. SOD-123 is a smaller package, which may provide space advantages in compact designs. Thermal performance differences between packages should be evaluated based on specific application heat dissipation requirements.

Operating Temperature Range: The CLL4626 BK operates to 200°C junction temperature, while the CMHZ4626 BK operates to 150°C. For applications requiring operation above 150°C, alternative solutions must be evaluated.

Frequently Asked Questions (FAQ)

Q: Can the CMHZ4626 BK directly replace the CLL4626 BK in existing designs?

A: Electrical substitution is direct. The CMHZ4626 BK maintains identical zener voltage, tolerance, power rating, impedance, and reverse leakage specifications. PCB layout modification is required due to package format change from SOD-80 to SOD-123. Verify footprint compatibility with your circuit board design before implementation.

Q: What is the primary reason for substituting the CLL4626 BK?

A: The CLL4626 BK is classified as obsolete. The CMHZ4626 BK is an active product with current manufacturing support, ensuring long-term availability and supply chain continuity.

Q: Are there thermal performance differences between SOD-80 and SOD-123 packages?

A: Both packages are surface mount formats with different physical dimensions. SOD-123 is a smaller package. Thermal performance depends on PCB copper area, thermal vias, and application-specific heat dissipation requirements. Evaluate thermal performance in your specific application context.

Q: Do both parts meet the same regulatory requirements?

A: Yes. Both the CLL4626 BK and CMHZ4626 BK share identical ECCN (EAR99) and HTSUS (8541.10.0050) classifications. The CMHZ4626 BK carries REACH Unaffected status.

Q: What is the operating temperature difference between these parts?

A: The CLL4626 BK operates from -65°C to 200°C junction temperature. The CMHZ4626 BK operates from -65°C to 150°C junction temperature. For applications requiring operation above 150°C, confirm the CMHZ4626 BK meets your thermal requirements.

Q: Are the forward voltage characteristics identical?

A: Forward voltage specifications differ. The CLL4626 BK specifies 1 V maximum at 200 mA, while the CMHZ4626 BK specifies 1.5 V maximum at 100 mA. These parameters apply to forward-biased operation and do not affect zener regulation performance in typical voltage regulation applications.