CDLL4619/TR Equivalent & Substitute Parts

Part Overview

The CDLL4619/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 3 V Zener diode with 500 mW power dissipation capability and ±5% voltage tolerance. The part is currently in active production status with 1059 units in stock. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity for applications requiring identical electrical and mechanical specifications.

Substiute Parts

CDLL4619/TR

Microchip TechnologyIn Stock: 1122CDLL4619/TR Datasheet

Current PartRFQ

1N4619UR/TR

Microchip TechnologyIn Stock: 13311N4619UR/TR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CDLL4619/TR is determined by strict equivalence across all critical electrical and mechanical parameters. The substitute part must match the following specifications without deviation:

• Zener voltage: 3 V nominal
• Voltage tolerance: ±5%
• Maximum power dissipation: 500 mW
• Maximum impedance: 1600 Ohms
• Reverse leakage current: 400 nA @ 1 V
• Forward voltage: 1.1 V maximum @ 200 mA
• Operating temperature range: -65°C to 175°C
• Package type: DO-213AA surface mount
• Mounting configuration: Surface mount

The substitute part 1N4619UR/TR meets all these criteria and is classified as a parametric equivalent. Both parts are manufactured by Microchip Technology and maintain identical electrical performance characteristics and physical form factor requirements.

Parameter Comparison

Engineering Selection Recommendations

Both the CDLL4619/TR and 1N4619UR/TR are active production components manufactured by Microchip Technology. Selection between these parts is based on inventory availability and procurement lead time rather than electrical or mechanical performance differences.

The CDLL4619/TR currently maintains 1059 units in stock inventory. The 1N4619UR/TR substitute maintains 1232 units in stock inventory, providing an alternative source when primary part availability is constrained.

Both parts are ROHS3 compliant and carry EAR99 export classification. The 1N4619UR/TR includes documented Moisture Sensitivity Level (MSL) rating of 1 (Unlimited), indicating no moisture sensitivity constraints during storage and handling.

For applications requiring regulatory compliance documentation, both parts satisfy identical compliance requirements. Component selection should prioritize inventory status and supplier delivery schedules.

Frequently Asked Questions (FAQ)

Q: Can the 1N4619UR/TR be used as a direct replacement for the CDLL4619/TR?

A: Yes. The 1N4619UR/TR is a parametric equivalent with identical electrical specifications, voltage rating, power dissipation, impedance characteristics, and operating temperature range. Both components use the DO-213AA surface mount package and are manufactured by Microchip Technology.

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

A: No. Both parts use identical DO-213AA surface mount packaging and Tape & Reel (TR) delivery format. PCB footprints and reflow soldering profiles are identical.

Q: What is the significance of the MSL rating on the 1N4619UR/TR?

A: The MSL 1 (Unlimited) rating on the 1N4619UR/TR indicates the component has no moisture sensitivity limitations. This simplifies storage and handling procedures compared to components with higher MSL ratings, though the CDLL4619/TR does not specify an MSL rating in the provided data.

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

A: Yes. Both the CDLL4619/TR and 1N4619UR/TR operate across the identical temperature range of -65°C to 175°C, supporting applications across industrial, automotive, and extended temperature environments.

Q: What is the basis for substitution between these two part numbers?

A: Substitution is based on complete electrical and mechanical parameter equivalence: 3 V nominal Zener voltage, ±5% tolerance, 500 mW maximum power, 1600 Ohms maximum impedance, 400 nA reverse leakage current, 1.1 V forward voltage at 200 mA, and DO-213AA surface mount package. Both parts are active production components from the same manufacturer.

Q: Can these parts be used interchangeably in existing designs without PCB modification?

A: Yes. Identical package specifications and pin configurations eliminate the need for PCB layout changes. Component substitution requires only bill of materials (BOM) updates.