CLL5266B TR Equivalent & Substitute Parts

Part Overview

The CLL5266B TR is a Zener diode rated at 68 V, 500 mW, designed for surface mount applications in the SOD-80 (DO-213AC, MINI-MELF) package. Manufactured by Central Semiconductor Corp, this component is classified as obsolete. Due to its obsolete status and limited current inventory availability, identifying active equivalent parts is essential for design continuity and procurement reliability in production environments.

Substiute Parts

CLL5266B TR

Central Semiconductor CorpIn Stock: 1215CLL5266B TR Datasheet

Current PartRFQ

TZM5266B-GS08

Vishay General Semiconductor - Diodes DivisionIn Stock: 22834TZM5266B-GS08 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CLL5266B TR is determined by strict equivalence across the following electrical and mechanical parameters:

Electrical Equivalence Criteria:

• Zener voltage: 68 V nominal
• Tolerance: ±5%
• Maximum power dissipation: 500 mW
• Maximum impedance: 230 Ohms
• Reverse leakage current: 100 nA @ 52 V
• Forward voltage: compatible with 1.25 V maximum specification

Mechanical Equivalence Criteria:

• Package type: SOD-80 (DO-213AC, MINI-MELF)
• Mounting type: Surface Mount
• Moisture sensitivity: MSL 1 (Unlimited)

The substitute part TZM5266B-GS08 meets all electrical parameters within specified tolerances and maintains identical mechanical packaging. The primary distinction is product status: TZM5266B-GS08 is active and available in production quantities, whereas CLL5266B TR is obsolete.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: TZM5266B-GS08

The TZM5266B-GS08 is the direct functional equivalent for the obsolete CLL5266B TR. Selection is based on the following engineering factors:

1. Electrical Equivalence: All critical electrical parameters match within specified tolerances. The forward voltage of TZM5266B-GS08 (1.1 V @ 200 mA) is lower than the CLL5266B TR specification (1.25 V @ 200 mA), which represents improved performance characteristics and is compatible with existing circuit designs.

2. Mechanical Compatibility: Both parts utilize identical SOD-80 (DO-213AC, MINI-MELF) packaging and surface mount configuration, enabling direct PCB layout compatibility without redesign.

3. Product Status and Availability: TZM5266B-GS08 is active with 22,800 pieces in stock, compared to CLL5266B TR's obsolete status with limited inventory (1,152 pieces). This ensures long-term procurement reliability and production continuity.

4. Regulatory Compliance: TZM5266B-GS08 carries ROHS3 compliance and REACH unaffected status, meeting current environmental and regulatory requirements for new designs and manufacturing.

5. Operating Temperature: The TZM5266B-GS08 operates across -65°C to 175°C, which covers the majority of industrial and commercial applications. The CLL5266B TR's extended upper limit (200°C) is not required for most standard applications.

Frequently Asked Questions (FAQ)

Q: Can TZM5266B-GS08 directly replace CLL5266B TR without circuit modification?

A: Yes. The TZM5266B-GS08 meets all electrical specifications of the CLL5266B TR within the defined tolerance bands. The lower forward voltage (1.1 V vs. 1.25 V) is a performance improvement and does not require circuit redesign. Mechanical packaging is identical, enabling direct PCB substitution.

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

A: The TZM5266B-GS08 exhibits a lower forward voltage (1.1 V @ 200 mA) compared to the CLL5266B TR (1.25 V @ 200 mA). This represents improved efficiency and lower power dissipation in forward-biased operation. For Zener diode applications, this difference is typically negligible in voltage regulation circuits where the device operates in reverse bias.

Q: Are there packaging differences between CLL5266B TR and TZM5266B-GS08?

A: No. Both parts are supplied in SOD-80 (DO-213AC, MINI-MELF) surface mount packages. Footprint, lead spacing, and mounting requirements are identical. No PCB layout modifications are necessary.

Q: Why is the operating temperature range different?

A: The CLL5266B TR specifies -65°C to 200°C, while TZM5266B-GS08 specifies -65°C to 175°C. The TZM5266B-GS08 range covers standard industrial (-40°C to 85°C) and extended industrial (-55°C to 125°C) temperature grades. Applications requiring operation above 175°C are uncommon for Zener diodes in standard voltage regulation circuits.

Q: What compliance certifications does TZM5266B-GS08 carry?

A: TZM5266B-GS08 is ROHS3 compliant and REACH unaffected. These certifications ensure compliance with current environmental regulations for electronic components in the EU and other regulated markets.

Q: Is the impedance specification identical between both parts?

A: Yes. Both CLL5266B TR and TZM5266B-GS08 specify a maximum impedance of 230 Ohms, ensuring equivalent dynamic impedance characteristics in circuit operation.

Q: What is the reverse leakage current specification?

A: Both parts specify 100 nA @ 52 V reverse leakage current, indicating equivalent leakage characteristics and suitability for precision voltage regulation applications.