CDLL4109C/TR Equivalent & Substitute Parts

Part Overview

The CDLL4109C/TR is an active Zener diode voltage regulator manufactured by Microchip Technology, classified as a surface mount component in the DO-213AA package. This 15 V, 500 mW Zener diode is designed for voltage regulation applications requiring stable reference voltages and reverse leakage control. The part is currently in active production status with 721 units in stock. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity for applications where the primary part number becomes unavailable or where alternative sourcing is required.

Substiute Parts

CDLL4109C/TR

Microchip TechnologyIn Stock: 823CDLL4109C/TR Datasheet

Current PartRFQ

1N5535CUR-1/TR

Microchip TechnologyIn Stock: 9821N5535CUR-1/TR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CDLL4109C/TR is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Zener voltage (Vz): 15 V nominal
• Tolerance: ±2%
• Maximum power dissipation: 500 mW
• Maximum impedance (Zzt): 100 Ohms
• Forward voltage (Vf): 1.1 V maximum at 200 mA
• Operating temperature range: -65°C to 175°C (TJ)
• Package type: DO-213AA surface mount
• Packaging format: Tape & Reel (TR)

The substitute part 1N5535CUR-1/TR meets all mandatory electrical and mechanical parameters. Variations in reverse leakage current specifications do not disqualify substitution, as this parameter remains within acceptable operational limits for voltage regulation applications. Both parts are manufactured by Microchip Technology and maintain identical functional characteristics for circuit-level performance.

Parameter Comparison

Engineering Selection Recommendations

Both CDLL4109C/TR and 1N5535CUR-1/TR are active production components manufactured by Microchip Technology with identical electrical specifications and mechanical packaging. Selection between these parts is based on inventory availability and supply chain requirements rather than functional performance differences.

The CDLL4109C/TR is currently available with 721 units in stock. The 1N5535CUR-1/TR substitute is available with 936 units in stock, providing enhanced procurement flexibility for high-volume applications or extended lead-time scenarios.

Both parts comply with REACH regulations (REACH Unaffected status) and carry identical ECCN (EAR99) and HTSUS (8541.10.0050) classifications, ensuring equivalent regulatory and trade compliance across substitution scenarios.

The 1N5535CUR-1/TR includes documented Moisture Sensitivity Level (MSL) rating of 1 (Unlimited), indicating superior moisture handling characteristics during storage and assembly processes.

Frequently Asked Questions (FAQ)

Q: Can the 1N5535CUR-1/TR be used as a direct replacement for the CDLL4109C/TR in existing circuit designs?

A: Yes. Both parts are electrically and mechanically identical across all critical parameters: 15 V nominal Zener voltage, ±2% tolerance, 500 mW maximum power, 100 Ohms maximum impedance, and DO-213AA surface mount packaging. No circuit modifications are required.

Q: What is the significance of the different reverse leakage current specifications?

A: The CDLL4109C/TR specifies 50 nA @ 11.4 V, while the 1N5535CUR-1/TR specifies 10 nA @ 13.5 V. Both values are within acceptable operational limits for voltage regulation applications. The lower leakage specification of the 1N5535CUR-1/TR represents improved performance characteristics without affecting functional compatibility.

Q: Are both parts suitable for the same operating temperature range?

A: Yes. Both parts operate across the identical temperature range of -65°C to 175°C (TJ), ensuring equivalent thermal performance in all environmental conditions.

Q: What is the difference between the packaging designations CDLL4109C/TR and 1N5535CUR-1/TR?

A: Both parts use identical Tape & Reel (TR) packaging in DO-213AA surface mount format. The different part number designations reflect manufacturer nomenclature conventions but do not indicate packaging or handling differences.

Q: Which part should be selected for new designs?

A: Either part is suitable for new designs. Selection should be based on current inventory availability, supplier lead times, and procurement cost. Both parts maintain active production status and identical specifications.

Q: Are there any compliance or regulatory differences between these parts?

A: No. Both parts carry identical REACH status (REACH Unaffected), ECCN classification (EAR99), and HTSUS code (8541.10.0050). The 1N5535CUR-1/TR includes an additional MSL rating of 1 (Unlimited), indicating enhanced moisture handling during storage and assembly.