CDBA260LR-HF Schottky Diode Equivalent & Substitute Parts

Part Overview

The CDBA260LR-HF is an active Schottky rectifier diode manufactured by Comchip Technology, rated for 60V DC reverse voltage and 2A average rectified current in a surface mount DO-214AC (SMA) package. This component is designed for fast recovery applications requiring switching speeds of 500ns or less at currents exceeding 200mA. The part is ROHS3 compliant with unlimited moisture sensitivity rating (MSL 1), making it suitable for industrial and commercial applications. Equivalent and substitute parts are identified when they share identical or compatible electrical ratings, mechanical packaging, and operational specifications within the allowed parameter ranges for this diode category.

Substiute Parts

CDBA260LR-HF

Comchip TechnologyIn Stock: 696CDBA260LR-HF Datasheet

Current PartRFQ

SK36A

Good-Ark SemiconductorIn Stock: 3546SK36A Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CDBA260LR-HF is determined by the following critical parameters:

Mandatory Matching Criteria:

• Voltage - DC Reverse (Vr) (Max): Must equal or exceed 60V
• Package / Case: Must be DO-214AC (SMA) surface mount
• Technology: Must be Schottky diode type
• Speed Classification: Must support Fast Recovery ≤ 500ns at currents > 200mA

Compatible Variation Criteria:

• Current - Average Rectified (Io): Substitute parts rated at 2A or higher are acceptable, as higher current ratings provide backward compatibility
• Voltage - Forward (Vf): Substitute parts with forward voltage specifications are acceptable within the Schottky diode operating range
• Reverse Leakage Current: Variations are acceptable provided the part meets Schottky technology specifications
• Operating Temperature Range: Substitute parts with equal or wider temperature ranges are acceptable
• Compliance & Certifications: ROHS3 compliance and MSL 1 rating are standard for this category

The SK36A from Good-Ark Semiconductor qualifies as a substitute based on matching reverse voltage (60V), identical package (DO-214AC/SMA), Schottky technology, fast recovery speed classification, and higher current rating (3A vs. 2A).

Parameter Comparison

Engineering Selection Recommendations

CDBA260LR-HF (Primary Part): The CDBA260LR-HF remains the specified component for applications requiring exact 2A current rating and 550mV forward voltage characteristics. This part is active, ROHS3 compliant, and carries unlimited moisture sensitivity rating suitable for standard industrial environments.

SK36A (Substitute Part): The SK36A qualifies as a direct substitute for applications where higher current capacity (3A) is acceptable or beneficial. The SK36A provides additional design margin through increased current rating while maintaining identical reverse voltage (60V) and package form factor (DO-214AC/SMA). The SK36A carries AEC-Q101 automotive qualification, indicating enhanced reliability screening. The wider operating temperature range (-55 to 150°C vs. -50 to 150°C) provides extended low-temperature performance. Both parts are ROHS3 compliant with MSL 1 rating.

Selection Basis:

• Both parts meet mandatory electrical and mechanical compatibility criteria
• Both parts maintain active product status
• Both parts satisfy regulatory compliance requirements (ROHS3, REACH Unaffected, EAR99)
• SK36A substitution is valid where circuit design permits higher current rating and accepts the specified forward voltage and capacitance characteristics

Frequently Asked Questions (FAQ)

Q: Can SK36A replace CDBA260LR-HF in any application?

A: SK36A qualifies as a substitute where the circuit design accommodates the higher 3A current rating and the specified electrical characteristics (700mV forward voltage @ 3A, 250pF capacitance @ 4V/1MHz). The identical 60V reverse voltage rating and DO-214AC package ensure mechanical and electrical compatibility. Application-specific circuit analysis is required to confirm suitability.

Q: What are the key differences between these parts?

A: The primary differences are current rating (2A vs. 3A), forward voltage specification (550mV @ 2A vs. 700mV @ 3A), reverse leakage current (500µA vs. 150µA @ 60V), capacitance (30pF vs. 250pF @ 4V/1MHz), and operating temperature range (-50 to 150°C vs. -55 to 150°C). Both share identical reverse voltage (60V), package (DO-214AC/SMA), technology (Schottky), and speed classification (Fast Recovery ≤ 500ns).

Q: Are both parts ROHS3 compliant?

A: Yes. Both CDBA260LR-HF and SK36A are ROHS3 compliant with MSL 1 (unlimited moisture sensitivity) rating. Both are REACH unaffected and classified as EAR99 for export control purposes.

Q: Does SK36A have automotive qualification?

A: Yes. SK36A carries AEC-Q101 automotive qualification, indicating it has undergone enhanced reliability screening and qualification testing. CDBA260LR-HF does not list automotive qualification in the provided specifications.

Q: Can CDBA260LR-HF be used where SK36A is specified?

A: CDBA260LR-HF cannot be used as a substitute for SK36A in applications specifically requiring the 3A current rating or AEC-Q101 automotive qualification. The lower 2A current rating of CDBA260LR-HF may be insufficient for circuits designed around the SK36A's higher current capacity.

Q: What is the significance of the DO-214AC (SMA) package?

A: The DO-214AC (SMA) is a surface mount package standard for small signal and rectifier diodes. Both parts use this identical package, ensuring mechanical compatibility in PCB layout, soldering processes, and thermal management. No package conversion or board redesign is required when substituting between these parts.

Q: How do the reverse leakage current specifications affect substitution?

A: SK36A exhibits lower reverse leakage current (150µA @ 60V) compared to CDBA260LR-HF (500µA @ 60V). Lower leakage current generally indicates better performance in high-impedance or precision applications. This difference is acceptable for standard rectification applications where leakage current is not a critical design parameter.

Q: What does "Fast Recovery ≤ 500ns, > 200mA" mean?

A: This specification indicates that both diodes achieve fast recovery switching characteristics (recovery time of 500 nanoseconds or less) when conducting currents exceeding 200 milliamps. This classification is essential for high-frequency switching applications and power conversion circuits. Both parts meet this identical specification.