Equivalent & Substitute Parts for CDLL5817

Part Overview

CDLL5817 is a Schottky rectifier diode manufactured by Microchip Technology, categorized under Diodes, Rectifiers. It features fast recovery characteristics, a maximum DC reverse voltage of 20 V, and an average rectified current of 1 A. The component is packaged in a DO-213AB MELF surface-mount format and operates within a junction temperature range of -55°C to 125°C. The part status is Active. The need to find alternative models arises due to factors such as compliance requirements (CDLL5817 is RoHS non-compliant), packaging preferences, or inventory supply demands.

Key Parameters

Manufacturer Part Number	Manufacturer	Category	Packaging	Description	Voltage - DC Reverse (Vr) (Max)	Current - Average Rectified (Io)	Voltage - Forward (Vf) (Max) @ If	Speed	Current - Reverse Leakage @ Vr	Mounting Type	Package / Case	Supplier Device Package	Operating Temperature - Junction	RoHS Status	Product Status
CDLL5817	Microchip Technology	Diodes, Rectifiers	Bulk	Diode 20 V 1A Surface Mount DO-213AB	20 V	1A	600 mV @ 1 A	Fast Recovery =< 500ns, > 200mA (Io)	100 µA @ 20 V	Surface Mount	DO-213AB, MELF	DO-213AB	-55°C ~ 125°C	RoHS non-compliant	Active

Substitute Part Grouping Explanation

Substitution within the Diodes, Rectifiers category is strictly determined by matching the following key parameters:

Voltage - DC Reverse (Vr) (Max)
Current - Average Rectified (Io)
Voltage - Forward (Vf) (Max) @ If
Speed (Fast Recovery characteristics)
Current - Reverse Leakage @ Vr
Mounting Type
Package / Case
Supplier Device Package
Operating Temperature - Junction
Product Status
RoHS Status

Only substitute parts that conform exactly or exceed these specifications within the provided data set are included.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Category	Packaging	Voltage - DC Reverse (Vr) (Max)	Current - Average Rectified (Io)	Voltage - Forward (Vf) (Max) @ If	Speed	Current - Reverse Leakage @ Vr	Mounting Type	Package / Case	Supplier Device Package	Operating Temperature - Junction	RoHS Status	Product Status
CDLL5817	Microchip Technology	Diodes, Rectifiers	Bulk	20 V	1A	600 mV @ 1 A	Fast Recovery =< 500ns, > 200mA (Io)	100 µA @ 20 V	Surface Mount	DO-213AB, MELF	DO-213AB	-55°C ~ 125°C	RoHS non-compliant	Active
CMSH1-20M TR13 PBFREE	Central Semiconductor Corp	Diodes, Rectifiers	Tape & Reel (TR)	20 V	1A	500 mV @ 1 A	Fast Recovery =< 500ns, > 200mA (Io)	500 µA @ 20 V	Surface Mount	DO-214AC, SMA	SMA	-65°C ~ 150°C	ROHS3 Compliant	Active

Engineering Selection Recommendations

CMSH1-20M TR13 PBFREE meets all specified operational parameters required for substitution in place of CDLL5817, including voltage, current, speed, and mounting type. The selection should consider product statuses, with both parts designated as Active. RoHS compliance differs: CDLL5817 is RoHS non-compliant whereas CMSH1-20M TR13 PBFREE is ROHS3 Compliant. If environmental compliance or specific regulations apply to the application, CMSH1-20M TR13 PBFREE aligns with stricter standards.

Frequently Asked Questions (FAQ)

Q1: Can CMSH1-20M TR13 PBFREE directly replace CDLL5817 in a design?
A1: CMSH1-20M TR13 PBFREE is a valid substitute, matching the voltage, current rating, speed, and mounting type specifications required for CDLL5817. Review package dimensions for mechanical compatibility.

Q2: Are there differences in package types to be considered?
A2: CDLL5817 is in a DO-213AB, MELF package, while CMSH1-20M TR13 PBFREE uses DO-214AC, SMA. Both are surface mount types, but physical layouts and reflow profiles differ. Ensure compatibility with the existing PCB design.

Q3: How does RoHS compliance affect selection between these parts?
A3: CDLL5817 is RoHS non-compliant; CMSH1-20M TR13 PBFREE is ROHS3 Compliant. For applications requiring RoHS compliance, select accordingly based on environmental regulations.

Q4: Are operating temperature ranges comparable for both parts?
A4: CMSH1-20M TR13 PBFREE offers a wider operating temperature (-65°C ~ 150°C) compared to CDLL5817 (-55°C ~ 125°C). Confirm suitability for the specific application environment.

Q5: Is there any impact from differences in reverse leakage current or forward voltage?
A5: Both diodes operate within the specified range for reverse leakage current and forward voltage. These differences fall within the electrical criteria provided and do not restrict substitution from an engineering perspective.

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