CDLL4109E3 Equivalent & Substitute Parts

Part Overview

The CDLL4109E3 is a Zener diode voltage regulator manufactured by Microchip Technology, classified as a surface mount component in the DO-213AA package. This device is designed for voltage regulation applications requiring a 15 V nominal Zener voltage with 500 mW power dissipation capability. The component is currently in active product status with 637 units available in inventory. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity for applications utilizing this Zener diode specification.

Substiute Parts

CDLL4109E3

Microchip TechnologyIn Stock: 703CDLL4109E3 Datasheet

Current PartRFQ

1N4109UR-1

Microchip TechnologyIn Stock: 12261N4109UR-1 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CDLL4109E3 is determined by electrical and mechanical parameter equivalence. The primary substitution criteria are:

Electrical Parameters:

• Zener voltage (Nom): 15 V
• Tolerance: ±5%
• Maximum power dissipation: 500 mW
• Impedance (Max): 100 Ohms
• Reverse leakage current: 50 nA @ 11.4 V
• Forward voltage: 1.1 V @ 200 mA
• Operating temperature range: -65°C to 175°C

Mechanical Parameters:

• Mounting type: Surface Mount
• Package / Case: DO-213AA

The substitute part 1N4109UR-1 meets all specified electrical and mechanical parameters, establishing it as a parametric equivalent for direct substitution in applications requiring the CDLL4109E3 specification.

Parameter Comparison

Engineering Selection Recommendations

CDLL4109E3 (Primary Part)

• Active product status with established supply (637 units in stock)
• REACH Unaffected compliance classification
• EAR99 export control classification
• Suitable for applications requiring Microchip Technology sourcing or existing design validation

1N4109UR-1 (Substitute Part)

• Active product status with higher inventory availability (1,139 units in stock)
• REACH Unaffected compliance classification
• EAR99 export control classification
• RoHS non-compliant designation
• Moisture Sensitivity Level (MSL): 1 (Unlimited)
• Suitable for applications where increased inventory availability is required

Both parts are manufactured by Microchip Technology and carry identical electrical and mechanical specifications. Selection between these parts should be based on inventory availability, supply chain requirements, and compliance documentation needs. The 1N4109UR-1 offers greater stock availability while maintaining full parametric equivalence.

Frequently Asked Questions (FAQ)

Q: Can 1N4109UR-1 be used as a direct replacement for CDLL4109E3?

A: Yes. The 1N4109UR-1 is a parametric equivalent with identical electrical specifications (15 V Zener voltage, ±5% tolerance, 500 mW power rating, 100 Ohms impedance) and mechanical specifications (DO-213AA surface mount package). Both components operate across the same temperature range (-65°C to 175°C) and are manufactured by Microchip Technology.

Q: What are the key parameters that determine substitution eligibility?

A: Substitution eligibility is determined by: Zener voltage (15 V nominal), tolerance (±5%), maximum power dissipation (500 mW), impedance (100 Ohms maximum), reverse leakage current (50 nA @ 11.4 V), forward voltage (1.1 V @ 200 mA), operating temperature range (-65°C to 175°C), mounting type (Surface Mount), and package type (DO-213AA).

Q: Are there compliance differences between CDLL4109E3 and 1N4109UR-1?

A: Both parts share identical REACH status (REACH Unaffected) and ECCN classification (EAR99). The 1N4109UR-1 is designated as RoHS non-compliant with Moisture Sensitivity Level 1 (Unlimited). Compliance requirements should be verified against specific application and regional standards.

Q: What is the difference in inventory availability?

A: CDLL4109E3 has 637 units in stock, while 1N4109UR-1 has 1,139 units in stock. The 1N4109UR-1 offers approximately 79% greater inventory availability.

Q: Are both parts suitable for the same circuit applications?

A: Yes. Both parts are Zener diodes with identical voltage regulation characteristics, impedance, and thermal performance. They are suitable for identical voltage regulation applications requiring 15 V Zener voltage and 500 mW power dissipation in surface mount configurations.

Q: What is the DO-213AA package?

A: DO-213AA is a surface mount package designation for Zener diodes. Both CDLL4109E3 and 1N4109UR-1 utilize this standardized package, ensuring mechanical and electrical compatibility in PCB designs.