CDLL5519C/TR Equivalent & Substitute Parts

Part Overview

The CDLL5519C/TR is a Zener diode voltage regulator manufactured by Microchip Technology, classified as a surface mount component in the DO-213AA package. This device functions as a voltage regulation and protection element in electronic circuits, with a nominal Zener voltage of 3.6 V and maximum power dissipation of 500 mW. The part maintains Active product status and is suitable for applications requiring precision voltage reference or transient suppression. Equivalent and substitute parts are identified to provide design flexibility, inventory alternatives, and continuity of supply for this component category.

Substiute Parts

CDLL5519C/TR

Microchip TechnologyIn Stock: 854CDLL5519C/TR Datasheet

Current PartRFQ

1N5519CUR-1/TR

Microchip TechnologyIn Stock: 9391N5519CUR-1/TR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CDLL5519C/TR is determined by electrical and mechanical parameter equivalence within the Zener diode category. The primary substitution criteria are:

Electrical Parameters:

• Nominal Zener voltage: 3.6 V
• Voltage tolerance: ±2%
• Maximum power dissipation: 500 mW
• Maximum impedance: 24 Ohms
• Reverse leakage current: 3 µA @ 1 V
• Forward voltage: 1.1 V @ 200 mA
• Operating temperature range: -65°C to 175°C

Mechanical Parameters:

• Package type: DO-213AA
• Mounting configuration: Surface Mount
• Tape & Reel packaging format

Parts meeting all specified electrical and mechanical parameters are classified as parametric equivalents and direct substitutes. The substitute part 1N5519CUR-1/TR satisfies all criteria and is therefore a valid equivalent for the CDLL5519C/TR.

Parameter Comparison

Engineering Selection Recommendations

Both the CDLL5519C/TR and 1N5519CUR-1/TR are Active products manufactured by Microchip Technology with identical electrical specifications and mechanical packaging. Selection between these parts is based on inventory availability and supply chain considerations rather than technical performance differences.

The CDLL5519C/TR currently maintains 797 pieces in stock inventory. The 1N5519CUR-1/TR substitute maintains 912 pieces in stock inventory, providing an alternative source for higher volume requirements or extended lead time mitigation.

Both parts carry identical export compliance classifications (ECCN: EAR99) and tariff codes (HTSUS: 8541.10.0050), ensuring equivalent regulatory treatment in procurement and logistics workflows.

The 1N5519CUR-1/TR includes documented Moisture Sensitivity Level (MSL) rating of 1 (Unlimited), indicating no moisture sensitivity constraints during storage and handling.

Frequently Asked Questions (FAQ)

Q: Can the 1N5519CUR-1/TR be used as a direct replacement for the CDLL5519C/TR?

A: Yes. Both parts are manufactured by Microchip Technology and share identical electrical parameters (3.6 V nominal Zener voltage, ±2% tolerance, 500 mW maximum power, 24 Ohms maximum impedance) and mechanical specifications (DO-213AA package, surface mount configuration, Tape & Reel format). No circuit modifications are required.

Q: Are there differences in package or mounting between these parts?

A: No. Both the CDLL5519C/TR and 1N5519CUR-1/TR use the DO-213AA surface mount package and are supplied in Tape & Reel format. PCB footprints and reflow soldering profiles are identical.

Q: What is the significance of the part number suffix differences?

A: The CDLL5519C/TR and 1N5519CUR-1/TR designations reflect different internal Microchip Technology product line classifications. Both designations refer to equivalent 3.6 V Zener diodes with identical electrical performance and are interchangeable at the circuit level.

Q: Are the operating temperature ranges the same?

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

Q: What is the difference in inventory availability?

A: The CDLL5519C/TR has 797 pieces in current stock, while the 1N5519CUR-1/TR has 912 pieces in current stock. The substitute part provides higher inventory depth for applications requiring larger quantities or extended supply assurance.

Q: Do these parts have different compliance or export classifications?

A: No. Both parts carry identical ECCN (EAR99) and HTSUS (8541.10.0050) classifications, ensuring equivalent treatment in export control and tariff applications.

Q: What does MSL 1 (Unlimited) mean for the 1N5519CUR-1/TR?

A: MSL 1 (Unlimited) indicates that the 1N5519CUR-1/TR has no moisture sensitivity constraints. The component can be stored and handled without time-limited exposure restrictions or baking requirements prior to reflow soldering.