Equivalent & Substitute Parts for CDLL4773 Zener Diode

Part Overview

The CDLL4773, manufactured by Microchip Technology, is a Zener diode in the DO-213AA surface mount package with a nominal Zener voltage of 9.1 V, power dissipation of 500 mW, and ±5% tolerance. Currently listed as "Active," this part is essential for voltage regulation applications requiring precise breakdown voltage and standardized package dimensions. It is necessary to identify alternative models to ensure supply continuity, manage compliance considerations, or address specific qualification needs.

Substiute Parts

CDLL4773

Microchip TechnologyIn Stock: 839CDLL4773 Datasheet

Current PartRFQ

JANTX1N4103UR-1

Microchip TechnologyIn Stock: 697JANTX1N4103UR-1 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitutes for Zener diodes must match critical electrical and mechanical parameters to ensure interchangeability. For CDLL4773, these parameters include: nominal Zener voltage (Vz) of 9.1 V, tolerance of ±5%, maximum power dissipation of 500 mW, maximum Zener impedance of 200 Ohms, reverse leakage current, identical package (DO-213AA surface mount), and an operating temperature range of -65°C to 175°C. Parts must share comparable compliance and regulatory status (RoHS, REACH, ECCN, HTSUS) to satisfy sourcing, export, and qualification requirements.

Parameter Comparison

Engineering Selection Recommendations

Both CDLL4773 and JANTX1N4103UR-1 are Active products and RoHS non-compliant, with REACH unaffected status, ECCN EAR99, and identical HTSUS classification. The substitute, JANTX1N4103UR-1, incorporates military grade and qualification (MIL-PRF-19500/435). Selection can be based on inventory status, regulatory compliance, and required qualifications associated with specific projects or contractual demands. Only provided certifications and compliance parameters are considered.

Frequently Asked Questions (FAQ)

Q1: What are the main substitution criteria for Zener diodes in this category? A1: Substitution strictly requires matching the Zener voltage (Vz), tolerance, maximum power, impedance, reverse leakage current, package type, and mounting configuration.

Q2: Are the physical packages and mounting formats identical? A2: Both CDLL4773 and JANTX1N4103UR-1 use the DO-213AA surface mount package, ensuring full mechanical compatibility.

Q3: Does RoHS status affect substitution in this case? A3: Both diodes are "RoHS non-compliant," so compliance alignment is maintained for applications allowing non-compliant devices.

Q4: Are military grade or qualified substitutes necessary? A4: Selection of military grade substitutes such as JANTX1N4103UR-1 is based solely on provided qualification data and project contract requirements.

Q5: Is reverse leakage current a critical differentiation for equivalence? A5: Substitute parts must meet or exceed the specified reverse leakage current parameters at their designated test voltages; comparison must be made only using provided values.

Q6: Is the substitute affected by reach or export classifications? A6: Both parts are REACH unaffected and classified as EAR99 for export controls. This ensures regulatory consistency for international and domestic procurement.