CDLL5527D/TR Equivalent & Substitute Parts

Part Overview

The CDLL5527D/TR 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 7.5 V nominal Zener voltage with 500 mW power dissipation capability. The part maintains Active product status and is suitable for applications requiring stable voltage reference or transient suppression across industrial and commercial temperature ranges. Substitute parts are identified to provide equivalent functional performance when the primary part number is unavailable or when inventory constraints require alternative sourcing.

Substiute Parts

CDLL5527D/TR

Microchip TechnologyIn Stock: 656CDLL5527D/TR Datasheet

Current PartRFQ

1N5527DUR-1/TR

Microchip TechnologyIn Stock: 13381N5527DUR-1/TR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CDLL5527D/TR are identified based on strict electrical and mechanical parameter equivalence. The substitution criteria are defined by the following parameters:

• Voltage - Zener (Nom): 7.5 V
• Tolerance: ±1%
• Power - Max: 500 mW
• Impedance (Max): 35 Ohms
• Current - Reverse Leakage @ Vr: 500 nA @ 6.8 V
• Voltage - Forward (Vf) (Max) @ If: 1.1 V @ 200 mA
• Operating Temperature Range: -65°C to 175°C (TJ)
• Mounting Type: Surface Mount
• Package / Case: DO-213AA
• Packaging: Tape & Reel (TR)

All substitute parts listed maintain identical electrical specifications and mechanical compatibility, ensuring direct functional equivalence in circuit applications.

Parameter Comparison

Engineering Selection Recommendations

Both the CDLL5527D/TR and 1N5527DUR-1/TR maintain Active product status from Microchip Technology, confirming ongoing manufacturer support and availability. Both parts carry identical export classification (ECCN: EAR99) and tariff codes (HTSUS: 8541.10.0050), ensuring compliance consistency across supply chain applications.

The 1N5527DUR-1/TR includes documented Moisture Sensitivity Level (MSL) rating of 1 (Unlimited), indicating superior moisture handling characteristics suitable for extended storage and high-humidity environments. Both parts are manufactured to identical electrical and mechanical specifications, supporting direct substitution in voltage regulation and transient suppression circuits.

Selection between these parts should be based on inventory availability, supply chain logistics, and specific environmental storage requirements. The MSL rating of the 1N5527DUR-1/TR provides additional assurance for applications with extended lead times or storage in non-controlled environments.

Frequently Asked Questions (FAQ)

Q: Can the 1N5527DUR-1/TR be used as a direct replacement for the CDLL5527D/TR?

A: Yes. Both parts are manufactured by Microchip Technology and maintain identical electrical parameters, including 7.5 V nominal Zener voltage, ±1% tolerance, 500 mW maximum power dissipation, and DO-213AA surface mount packaging. Direct substitution is supported without circuit modification.

Q: Are there differences in packaging or tape specifications between these parts?

A: Both parts are supplied in Tape & Reel (TR) packaging format with DO-213AA case dimensions. No packaging or reel specification differences exist between the two part numbers.

Q: What is the significance of the MSL rating on the 1N5527DUR-1/TR?

A: The Moisture Sensitivity Level (MSL) rating of 1 (Unlimited) indicates the component can be stored indefinitely without moisture absorption concerns. This specification is relevant for supply chain applications involving extended storage periods or non-climate-controlled warehouse environments.

Q: Do both parts operate across the same temperature range?

A: Yes. Both the CDLL5527D/TR and 1N5527DUR-1/TR operate across the identical temperature range of -65°C to 175°C (TJ), supporting applications across industrial and extended commercial temperature specifications.

Q: Are there any compliance or export restrictions affecting either part?

A: Both parts carry identical export classification (ECCN: EAR99) and tariff codes (HTSUS: 8541.10.0050). No differential compliance restrictions apply between the two part numbers.

Q: What electrical parameters determine substitution eligibility for Zener diodes in this category?

A: Substitution eligibility is determined by matching Zener voltage (7.5 V), tolerance (±1%), maximum power dissipation (500 mW), impedance (35 Ohms maximum), reverse leakage current (500 nA @ 6.8 V), and forward voltage characteristics (1.1 V @ 200 mA). All parameters must align exactly for direct substitution.