CLL4626 BK TIN/LEAD Equivalent & Substitute Parts

Part Overview

The CLL4626 BK TIN/LEAD is a surface mount Zener diode rated at 5.6 V nominal with 500 mW power dissipation and ±5% tolerance. This component is classified as obsolete, indicating discontinued production and limited availability. Identification of equivalent substitute parts is necessary to support ongoing design requirements, maintenance operations, and production continuity where original inventory becomes depleted.

Substiute Parts

CLL4626 BK TIN/LEAD

Central Semiconductor CorpIn Stock: 1230CLL4626 BK TIN/LEAD Datasheet

Current PartRFQ

CMHZ4626 BK TIN/LEAD

Central Semiconductor CorpIn Stock: 760CMHZ4626 BK TIN/LEAD Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CLL4626 BK TIN/LEAD is determined by the following critical parameters:

Electrical Equivalence Criteria:

• Voltage - Zener (Nom): 5.6 V
• Tolerance: ±5%
• Power - Max: 500 mW
• Impedance (Max): 1400 Ohms
• Current - Reverse Leakage @ Vr: 10 µA @ 4 V

Mechanical Compatibility Criteria:

• Mounting Type: Surface Mount
• Package / Case compatibility with circuit board layout

The CMHZ4626 BK TIN/LEAD meets all electrical equivalence criteria. However, package differences exist between the original SOD-80 (DO-213AC, MINI-MELF) and the substitute SOD-123 package, requiring physical layout verification before implementation.

Parameter Comparison

Engineering Selection Recommendations

CMHZ4626 BK TIN/LEAD Substitution Suitability:

The CMHZ4626 BK TIN/LEAD provides electrical equivalence across all primary Zener diode specifications: nominal voltage, tolerance, maximum power dissipation, impedance, and reverse leakage current. The substitute part carries active product status, ensuring continued availability and supply chain support.

Considerations for Implementation:

1. Package Transition: The substitute transitions from SOD-80 (MINI-MELF) to SOD-123 package format. Physical footprint differences require circuit board layout verification and potential PCB redesign.

2. Operating Temperature: The original CLL4626 operates to 200°C junction temperature, while the CMHZ4626 operates to 150°C. Applications requiring operation above 150°C junction temperature cannot use this substitute without thermal analysis.

3. Forward Voltage Characteristics: Forward voltage specifications differ between parts (1 V @ 200 mA versus 1.5 V @ 100 mA). Applications with forward conduction requirements must evaluate impact on circuit performance.

4. Product Status: The substitute part maintains active production status, providing long-term availability and supply security compared to the obsolete original.

Frequently Asked Questions (FAQ)

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

A: Electrical substitution is valid based on matching Zener voltage, tolerance, power rating, impedance, and reverse leakage specifications. However, physical substitution requires package compatibility verification. The SOD-123 package differs from the SOD-80 footprint, necessitating circuit board layout assessment.

Q: What are the primary electrical differences between these parts?

A: The parts are electrically equivalent in Zener characteristics. Forward voltage specifications differ: CLL4626 is rated 1 V @ 200 mA, while CMHZ4626 is rated 1.5 V @ 100 mA. Operating temperature ranges differ: CLL4626 extends to 200°C, CMHZ4626 to 150°C.

Q: Why is the CLL4626 listed as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. The CMHZ4626 provides an active alternative with equivalent electrical performance and ongoing supply availability.

Q: Are there compliance or certification differences between these parts?

A: The CLL4626 is RoHS non-compliant. The CMHZ4626 status indicates REACH Unaffected. Both carry EAR99 export classification and identical HTSUS codes.

Q: What package considerations apply to substitution?

A: The CLL4626 uses SOD-80 (DO-213AC, MINI-MELF) package. The CMHZ4626 uses SOD-123 package. These packages have different physical dimensions and PCB footprints. Substitution requires verification that the SOD-123 footprint accommodates circuit board layout constraints.

Q: Can the CMHZ4626 be used in applications requiring 200°C junction temperature operation?

A: No. The CMHZ4626 maximum junction temperature is 150°C. Applications requiring operation above 150°C cannot use this substitute without thermal redesign or alternative component selection.