CLL5232D BK Zener Diode Equivalent & Substitute Parts

Part Overview

The CLL5232D BK is a 5.6 V Zener diode rated at 500 mW, manufactured by Central Semiconductor Corp in SOD-80 (DO-213AC, MINI-MELF) surface mount package. This component is classified as obsolete, necessitating identification of active equivalent parts for ongoing design requirements and procurement needs. The substitute part maintains the same nominal voltage, power rating, and package form factor while offering improved availability and active product status.

Substiute Parts

CLL5232D BK

Central Semiconductor CorpIn Stock: 902CLL5232D BK Datasheet

Current PartRFQ

TZMB5V6-GS08

Vishay General Semiconductor - Diodes DivisionIn Stock: 134213TZMB5V6-GS08 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CLL5232D BK with the TZMB5V6-GS08 is based on the following alignment of critical electrical and mechanical parameters:

Matched Parameters:

• Nominal Zener voltage: 5.6 V (identical)
• Maximum power dissipation: 500 mW (identical)
• Package form factor: SOD-80 / DO-213AC / MINI-MELF (identical)
• Mounting technology: Surface Mount (identical)
• Moisture sensitivity level: MSL 1 (Unlimited) (identical)
• ECCN and HTSUS classifications: EAR99 and 8541.10.0050 (identical)

Acceptable Parameter Variations:

• Voltage tolerance: ±1% (CLL5232D BK) vs. ±2% (TZMB5V6-GS08) — The substitute exhibits wider tolerance, which is acceptable for most circuit applications where the original ±1% specification is not a critical design constraint.
• Operating temperature range: -65°C ~ 200°C (CLL5232D BK) vs. -65°C ~ 175°C (TZMB5V6-GS08) — The substitute has a reduced upper temperature limit of 25°C; this is acceptable for applications where junction temperature does not exceed 175°C.
• Impedance (Max): 11 Ohms (CLL5232D BK) vs. 40 Ohms (TZMB5V6-GS08) — Higher impedance in the substitute may affect transient response characteristics in high-frequency applications.

The TZMB5V6-GS08 is an active product with automotive-grade qualification (AEC-Q101) and RoHS3 compliance, providing superior supply chain availability and regulatory alignment compared to the obsolete CLL5232D BK.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: TZMB5V6-GS08

The TZMB5V6-GS08 is the direct substitute for the obsolete CLL5232D BK. Selection of this part is based on:

1. Product Status: The TZMB5V6-GS08 is an active product with established supply chain availability, eliminating procurement risk associated with the obsolete CLL5232D BK.

2. Regulatory Compliance: The TZMB5V6-GS08 carries RoHS3 compliance and REACH unaffected status, meeting current environmental and regulatory requirements. The CLL5232D BK compliance status is not specified.

3. Automotive Qualification: The TZMB5V6-GS08 holds AEC-Q101 qualification, indicating suitability for automotive and high-reliability applications. This certification is not applicable to the CLL5232D BK.

4. Electrical Compatibility: Nominal voltage (5.6 V), power rating (500 mW), and package form factor (SOD-80) are identical. Voltage tolerance widens from ±1% to ±2%, which is acceptable for standard voltage regulation and protection circuits.

5. Thermal Considerations: The maximum operating temperature reduces from 200°C to 175°C. This substitution is valid for applications where the junction temperature design margin does not require operation above 175°C.

Application-Specific Considerations:

• For circuits requiring the original ±1% voltage tolerance specification, evaluate whether the ±2% tolerance of the substitute meets circuit performance requirements.
• For applications operating near or above 175°C junction temperature, thermal analysis is required to confirm the substitute's suitability.
• The increased impedance (40 Ohms vs. 11 Ohms) may affect transient suppression performance in high-frequency switching circuits; circuit simulation or testing is recommended for such applications.

Frequently Asked Questions (FAQ)

Q1: Can the TZMB5V6-GS08 be used as a direct drop-in replacement for the CLL5232D BK?

A: Yes, for most applications. Both parts share identical nominal voltage (5.6 V), power rating (500 mW), and SOD-80 package. PCB layout and assembly processes require no modification. However, verify that your circuit design tolerates the ±2% voltage tolerance (vs. ±1% original) and operates within the 175°C maximum junction temperature limit.

Q2: What is the impact of the wider voltage tolerance (±2% vs. ±1%) on circuit performance?

A: The voltage tolerance affects the precision of voltage regulation and protection functions. For applications where the original ±1% specification is critical (such as precision analog circuits or tight voltage margin designs), evaluate whether ±2% tolerance remains acceptable. For standard voltage regulation and overvoltage protection circuits, ±2% tolerance is typically acceptable.

Q3: Why does the TZMB5V6-GS08 have a lower maximum operating temperature (175°C vs. 200°C)?

A: The reduced upper temperature limit reflects the thermal design specifications of the Vishay part. For applications where junction temperature remains below 175°C during normal operation, this difference has no practical impact. Thermal analysis of your specific circuit is recommended if operation near or above 175°C is anticipated.

Q4: What does AEC-Q101 qualification mean for the TZMB5V6-GS08?

A: AEC-Q101 is an automotive industry qualification standard for discrete semiconductors. It certifies that the part meets stringent reliability, quality, and performance requirements for automotive applications. This qualification is not applicable to the obsolete CLL5232D BK.

Q5: Are there any differences in reverse leakage current between the two parts?

A: Yes. The CLL5232D BK specifies 5 µA @ 3 V, while the TZMB5V6-GS08 specifies 100 nA @ 1 V. The substitute exhibits significantly lower leakage current, which is beneficial for low-power applications and reduces power dissipation in standby conditions.

Q6: Is the TZMB5V6-GS08 available in the same packaging options as the CLL5232D BK?

A: Both parts use the SOD-80 (DO-213AC, MINI-MELF) surface mount package. The TZMB5V6-GS08 is available in Cut Tape (CT) and Digi-Reel® packaging, as well as standard Tape & Reel (TR) format, providing flexible procurement options.

Q7: What is the significance of MSL 1 (Unlimited) moisture sensitivity level?

A: MSL 1 indicates the lowest moisture sensitivity classification. Both parts can be stored and handled without special moisture control measures, simplifying inventory management and assembly processes.

Q8: Should I test the TZMB5V6-GS08 before full production implementation?

A: Standard engineering practice for component substitution includes functional validation in your specific circuit application, particularly for voltage tolerance and thermal performance. Consult your organization's component qualification procedures.