CLL4625 BK TIN/LEAD Equivalent & Substitute Parts

Part Overview

The CLL4625 BK TIN/LEAD is a surface mount Zener diode manufactured by Central Semiconductor Corp, rated at 5.1 V nominal with 500 mW power dissipation and ±5% tolerance. This component is classified as obsolete, necessitating identification of equivalent substitute parts for ongoing design requirements and procurement needs. The part is packaged in DO-213AC (MINI-MELF, SOD-80) configuration and operates across a temperature range of -65°C to 200°C.

Substiute Parts

CLL4625 BK TIN/LEAD

Central Semiconductor CorpIn Stock: 3435CLL4625 BK TIN/LEAD Datasheet

Current PartRFQ

CMHZ4625 BK TIN/LEAD

Central Semiconductor CorpIn Stock: 1214CMHZ4625 BK TIN/LEAD Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CLL4625 BK TIN/LEAD is determined by electrical and mechanical compatibility across the following critical parameters:

Electrical Compatibility Criteria:

• Zener voltage (Vz) must equal 5.1 V nominal
• Tolerance must be ±5%
• Power dissipation rating must be 500 mW or greater
• Impedance (Zzt) must not exceed 1500 Ohms
• Reverse leakage current must not exceed 10 µA @ 3 V
• Forward voltage characteristics must be compatible with circuit requirements

Mechanical Compatibility Criteria:

• Surface mount configuration required
• Package footprint must be compatible with PCB layout

The CMHZ4625 BK TIN/LEAD meets all electrical parameters and operates as a direct functional equivalent, with the primary distinction being package format (SOD-123 versus SOD-80) and operating temperature range (-65°C to 150°C versus -65°C to 200°C).

Parameter Comparison

Engineering Selection Recommendations

The CMHZ4625 BK TIN/LEAD is an active product substitute for the obsolete CLL4625 BK TIN/LEAD. Both components share identical electrical specifications for Zener voltage, tolerance, power rating, impedance, and reverse leakage characteristics. The substitute part is manufactured by the same supplier, ensuring consistency in design and performance.

Key Considerations for Selection:

1. Package Format Difference: The CLL4625 uses SOD-80 (MINI-MELF) packaging, while the CMHZ4625 uses SOD-123 packaging. PCB layout modifications are required to accommodate the different footprint.

2. Operating Temperature Range: The CLL4625 operates to 200°C junction temperature, while the CMHZ4625 operates to 150°C. Applications requiring operation above 150°C require evaluation of thermal requirements.

3. Forward Voltage Characteristics: The CMHZ4625 exhibits a maximum forward voltage of 1.5 V @ 100 mA compared to 1 V @ 200 mA for the CLL4625. Circuit designs dependent on forward voltage characteristics require assessment.

4. Product Status: The CMHZ4625 is active and available in inventory (1124 pcs), whereas the CLL4625 is obsolete. The substitute part ensures long-term supply continuity.

5. Compliance: Both parts carry EAR99 classification and HTSUS code 8541.10.0050. The CMHZ4625 is REACH Unaffected, providing regulatory compliance for international applications.

Frequently Asked Questions (FAQ)

Q: Can the CMHZ4625 BK TIN/LEAD directly replace the CLL4625 BK TIN/LEAD in existing designs?

A: Electrical substitution is valid based on matching Zener voltage (5.1 V), tolerance (±5%), power rating (500 mW), impedance (1500 Ohms max), and reverse leakage specifications. However, mechanical substitution requires PCB layout modification due to different package formats (SOD-123 versus SOD-80). Applications operating above 150°C junction temperature require thermal evaluation.

Q: What are the primary differences between SOD-80 and SOD-123 packages?

A: SOD-80 (MINI-MELF) and SOD-123 are distinct surface mount package formats with different footprints, lead spacing, and land pattern requirements. PCB design changes are necessary to accommodate the substitute package. Consult package datasheets for specific dimensional and placement specifications.

Q: Are there any compliance or certification differences between the two parts?

A: Both parts carry identical ECCN (EAR99) and HTSUS (8541.10.0050) classifications. The CMHZ4625 is REACH Unaffected, providing regulatory compliance for international markets. The CLL4625 is RoHS non-compliant, while REACH status for the CLL4625 is not specified in available data.

Q: What is the significance of the forward voltage difference between these parts?

A: The CLL4625 specifies 1 V @ 200 mA forward voltage, while the CMHZ4625 specifies 1.5 V @ 100 mA. These measurements are taken at different current levels and represent different operating conditions. Circuit designs relying on forward voltage characteristics for biasing or current limiting require assessment of this parameter difference.

Q: Why is the CLL4625 classified as obsolete?

A: The CLL4625 is listed as obsolete by the manufacturer. The CMHZ4625 BK TIN/LEAD is the active equivalent product, ensuring continued availability and supply chain reliability for applications requiring 5.1 V Zener diodes with 500 mW power rating.

Q: Is the operating temperature range difference significant for my application?

A: The CLL4625 operates to 200°C junction temperature, while the CMHZ4625 operates to 150°C. Applications with thermal requirements exceeding 150°C require evaluation of the substitute part's suitability. Standard industrial and commercial applications typically operate within the 150°C range of the CMHZ4625.