CDBA240L-HF Schottky Diode Equivalent & Substitute Parts

Part Overview

The CDBA240L-HF is an active Schottky rectifier diode manufactured by Comchip Technology, rated for 40V 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 in active production status with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1).

Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained across the specified parameter range, enabling procurement flexibility and supply chain continuity.

Substiute Parts

CDBA240L-HF

Comchip TechnologyIn Stock: 5142CDBA240L-HF Datasheet

Current PartRFQ

B240AQ-13-F

Diodes IncorporatedIn Stock: 14254B240AQ-13-F Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CDBA240L-HF is determined by strict equivalence across the following critical parameters:

Mandatory Equivalence Parameters:

• Voltage - DC Reverse (Vr) (Max): 40 V
• Current - Average Rectified (Io): 2 A
• Package / Case: DO-214AC, SMA
• Mounting Type: Surface Mount
• Technology: Schottky
• Speed: Fast Recovery ≤ 500ns, > 200mA (Io)

Acceptable Variation Parameters:

• Voltage - Forward (Vf) (Max) @ If: Substitute may exceed main part specification
• Current - Reverse Leakage @ Vr: Substitute may exceed main part specification
• Capacitance @ Vr, F: Substitute may exceed main part specification
• Operating Temperature - Junction: Substitute may exceed main part range
• Certifications and Grade: Substitute may include additional qualifications (e.g., AEC-Q101 Automotive)

The B240AQ-13-F from Diodes Incorporated meets all mandatory equivalence criteria and qualifies as a direct substitute.

Parameter Comparison

Engineering Selection Recommendations

CDBA240L-HF (Primary Selection):

• Active production status with 5091 units in stock
• Standard industrial-grade Schottky diode
• Suitable for general-purpose rectification and switching applications
• Lower forward voltage drop (400 mV @ 2A) reduces thermal dissipation
• RoHS3 compliant with unlimited moisture sensitivity rating

B240AQ-13-F (Substitute Selection):

• Active production status with 14162 units in stock
• AEC-Q101 automotive qualification provides enhanced reliability documentation
• Extended operating temperature range (-65°C ~ 150°C) accommodates wider thermal environments
• Lower reverse leakage current (500 µA @ 40V) improves circuit performance in high-impedance applications
• RoHS3 compliant with unlimited moisture sensitivity rating
• Suitable for automotive, industrial, and consumer applications requiring automotive-grade reliability

Both parts maintain identical voltage and current ratings, package form factor, and fast recovery switching characteristics. Selection between these parts depends on supply availability, cost considerations, and application-specific thermal or reliability requirements.

Frequently Asked Questions (FAQ)

Q: Can B240AQ-13-F replace CDBA240L-HF in existing designs without PCB modification?

A: Yes. Both parts use identical DO-214AC (SMA) package geometry and surface mount footprint. No PCB layout changes are required. Electrical performance is equivalent across all critical parameters.

Q: What is the impact of the higher forward voltage drop in B240AQ-13-F (500 mV vs. 400 mV)?

A: The 100 mV difference represents approximately 25% higher conduction loss at 2A rated current. In thermal-sensitive applications, this may increase junction temperature by 5-10°C depending on PCB thermal design. Verify thermal margins in high-ambient-temperature environments.

Q: Why does B240AQ-13-F have lower reverse leakage current?

A: Lower reverse leakage (500 µA vs. 1 mA @ 40V) indicates superior minority carrier control and junction quality. This improves performance in precision rectification, sample-and-hold circuits, and high-impedance measurement applications.

Q: Is AEC-Q101 qualification required for my application?

A: AEC-Q101 automotive qualification is mandatory for automotive and safety-critical applications. For industrial and consumer applications, it provides optional enhanced reliability documentation but is not required for functional equivalence.

Q: Can I use B240AQ-13-F in temperature environments below -55°C?

A: Yes. B240AQ-13-F operates to -65°C junction temperature, extending the usable range 10°C lower than CDBA240L-HF. Verify that circuit design and component ratings support operation at the lower temperature limit.

Q: Are there any packaging or labeling differences between these parts?

A: Both parts use identical DO-214AC (SMA) surface mount package. Supplier device package designation differs (DO-214AC vs. SMA), but these refer to the same physical package. Verify part markings during receiving inspection to confirm correct manufacturer.

Q: What is the moisture sensitivity level for both parts?

A: Both CDBA240L-HF and B240AQ-13-F carry MSL 1 (Unlimited) rating, indicating no moisture-related storage or handling restrictions. Standard ESD precautions apply during assembly.