CDBA320-G Schottky Diode Equivalent & Substitute Parts

Part Overview

The CDBA320-G is a Schottky rectifier diode manufactured by Comchip Technology, rated for 20 V DC reverse voltage and 3 A average rectified current in a surface mount DO-214AC (SMA) package. This component is classified as obsolete, necessitating identification of equivalent and substitute parts for ongoing design support and procurement continuity. Substitute parts are selected based on matching or exceeding electrical performance parameters while maintaining compatible package and mounting specifications.

Substiute Parts

CDBA320-G

Comchip TechnologyIn Stock: 85108CDBA320-G Datasheet

Current PartRFQ

CDBA340-G

Comchip TechnologyIn Stock: 1760CDBA340-G Datasheet

DirectRFQ

CDBA340-HF

Comchip TechnologyIn Stock: 655177CDBA340-HF Datasheet

DirectRFQ

B320A-13-F

Diodes IncorporatedIn Stock: 35129B320A-13-F Datasheet

Parametric EquivalentRFQ

B320AE-13

Diodes IncorporatedIn Stock: 5325B320AE-13 Datasheet

Parametric EquivalentRFQ

B320AQ-13-F

Diodes IncorporatedIn Stock: 5112B320AQ-13-F Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CDBA320-G are classified into two categories based on electrical parameter compatibility:

Direct Manufacturer Substitutes (Comchip Technology): Parts CDBA340-G and CDBA340-HF are higher voltage rated variants (40 V) from the same manufacturer. These parts maintain identical current rating (3 A), forward voltage (500 mV @ 3 A), speed characteristics (Fast Recovery ≤ 500ns), and package format (DO-214AC, SMA). The increased reverse voltage rating provides enhanced design margin and is electrically compatible in applications designed for 20 V operation.

Parametric Equivalents (Diodes Incorporated): Parts B320A-13-F, B320AE-13, and B320AQ-13-F are functionally equivalent devices from an alternative manufacturer. These parts match the 20 V reverse voltage rating, 3 A current rating, 500 mV forward voltage, fast recovery speed, and DO-214AC/SMA package specification. Substitution is based on electrical parameter equivalence across the specified operating range.

Key parameters determining substitution eligibility:

• Voltage - DC Reverse (Vr) (Max): ≥ 20 V
• Current - Average Rectified (Io): = 3 A
• Voltage - Forward (Vf) (Max) @ If: ≤ 500 mV @ 3 A
• Speed: Fast Recovery ≤ 500ns, > 200mA (Io)
• Package / Case: DO-214AC, SMA
• Mounting Type: Surface Mount

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Same Electrical Rating): Select B320A-13-F, B320AE-13, or B320AQ-13-F from Diodes Incorporated. All three parts are active products with ROHS3 compliance and REACH unaffected status. B320A-13-F and B320AQ-13-F carry AEC-Q101 automotive qualification, suitable for applications requiring automotive-grade reliability. B320AE-13 offers reduced reverse leakage current (100 µA @ 20 V) compared to the original specification (500 µA @ 20 V), providing improved performance in low-leakage applications.

For Higher Voltage Margin Applications: Select CDBA340-G or CDBA340-HF from Comchip Technology. Both parts provide 40 V reverse voltage rating while maintaining 3 A current capacity and identical forward voltage characteristics. CDBA340-HF offers specified junction temperature range of -50°C to 150°C and includes capacitance specification (250 pF @ 4 V, 1 MHz). Both are active products with ROHS3 compliance.

Packaging Considerations: All substitute parts are supplied in DO-214AC (SMA) surface mount package, maintaining footprint compatibility with original CDBA320-G designs. Packaging options vary by part number: CDBA340-G and CDBA340-HF are supplied in Tape & Reel (TR); B320A-13-F is supplied in Cut Tape (CT) & Digi-Reel®; B320AE-13 and B320AQ-13-F are supplied in Tape & Reel (TR).

Frequently Asked Questions (FAQ)

Q: Can CDBA340-G or CDBA340-HF be used as direct replacements for CDBA320-G?

A: Yes. CDBA340-G and CDBA340-HF are electrically compatible substitutes. Both maintain the 3 A current rating, 500 mV forward voltage, and fast recovery speed characteristics. The 40 V reverse voltage rating exceeds the 20 V requirement, providing additional design margin. Package and mounting specifications are identical (DO-214AC, SMA, surface mount).

Q: What is the difference between B320A-13-F and B320AQ-13-F?

A: Both parts are parametrically equivalent with identical electrical ratings (20 V, 3 A, 500 mV forward voltage). B320AQ-13-F carries AEC-Q101 automotive qualification; B320A-13-F also carries AEC-Q101 qualification. Both are supplied by Diodes Incorporated with ROHS3 compliance and REACH unaffected status.

Q: Why does B320AE-13 show lower reverse leakage current (100 µA @ 20 V) compared to other 20 V parts (500 µA @ 20 V)?

A: B320AE-13 is specified with reduced reverse leakage current, representing a performance variant within the B320 product family. This characteristic is provided in the manufacturer specification and does not affect substitution eligibility. The part maintains all other electrical parameters (voltage, current, forward voltage, speed) required for CDBA320-G replacement.

Q: Are all substitute parts RoHS compliant?

A: All substitute parts listed (CDBA340-G, CDBA340-HF, B320A-13-F, B320AE-13, B320AQ-13-F) are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: What is the difference in packaging between Cut Tape (CT) & Digi-Reel® and Tape & Reel (TR)?

A: Both packaging formats supply the same DO-214AC (SMA) component in surface mount configuration. Cut Tape (CT) & Digi-Reel® is suitable for lower-volume applications and manual assembly; Tape & Reel (TR) is optimized for high-volume automated assembly. Component electrical specifications and package dimensions remain identical.

Q: Can CDBA320-G be used in applications requiring higher voltage tolerance?

A: No. CDBA320-G is rated for maximum 20 V DC reverse voltage. For applications requiring higher voltage tolerance, CDBA340-G or CDBA340-HF (40 V rating) are appropriate substitutes.