CDLL4771A Equivalent & Substitute Parts Reference

Part Overview

The CDLL4771A from Microchip Technology is a surface mount Zener diode in the Diodes, Zener category, housed in a DO-213AA package. It operates at a nominal Zener voltage of 9.1 V with a power rating of 500 mW and a tolerance of ±5%. The device is RoHS non-compliant and is commonly used for voltage regulation and protection circuits. Alternative models are sometimes required to address supply chain availability, compliance requirements, or qualification needs within an application when the original part is not readily available.

Substiute Parts

CDLL4771A

Microchip TechnologyIn Stock: 1146CDLL4771A Datasheet

Current PartRFQ

JANTX1N4103UR-1

Microchip TechnologyIn Stock: 697JANTX1N4103UR-1 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for CDLL4771A are selected by comparing key electrical and mechanical parameters. Only those parts that match the Zener voltage (9.1 V), tolerance (±5%), maximum power (500 mW), maximum impedance (200 Ohms), surface mount configuration, package type (DO-213AA), and temperature rating are included. Compliance and qualification information are also matched where provided.

Key substitution parameters:

• Voltage - Zener (Nom) (Vz)
• Tolerance
• Power - Max
• Impedance (Max) (Zzt)
• Operating Temperature
• Mounting Type
• Package / Case
• RoHS and REACH status
• Product Status

Parameter Comparison

Engineering Selection Recommendations

Selection between CDLL4771A and JANTX1N4103UR-1 is determined by product status, RoHS and REACH compliance, and any additional qualification requirements stated in the part description. Both parts are RoHS non-compliant and REACH Unaffected, with active status. The JANTX1N4103UR-1 includes military grade qualification (MIL-PRF-19500/435) which may be relevant for applications with specific reliability or regulatory guidelines.

Frequently Asked Questions (FAQ)

Q1: What are the primary criteria for identifying a substitute Zener diode?
A1: Substitutes are identified by matching voltage rating, tolerance, power dissipation, maximum impedance, package type, and mounting method.

Q2: Does package type affect substitution for surface mount Zener diodes?
A2: Yes. The substitute part must use the same package (DO-213AA) to ensure mechanical and assembly compatibility.

Q3: Are RoHS and REACH statuses considered in substitution?
A3: Yes. Both original and substitute parts must have matching RoHS and REACH statuses when compliance is a requirement.

Q4: How is product status relevant in selecting a substitute?
A4: Only active parts are listed as substitutes to ensure continuous availability and support.

Q5: Is military qualification required for all substitutions?
A5: Military grade qualification is a distinguishing attribute and may be essential for applications requiring MIL-PRF-19500/435 compliance, as seen with JANTX1N4103UR-1.