CDBA380-G Schottky Diode 80V 3A DO-214AC Equivalent & Substitute Parts

Part Overview

The CDBA380-G is a Schottky rectifier diode manufactured by Comchip Technology, rated for 80V DC reverse voltage and 3A 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. The part operates across a junction temperature range of -55°C to 150°C and features fast recovery characteristics suitable for high-frequency switching applications.

Substiute Parts

CDBA380-G

Comchip TechnologyIn Stock: 705CDBA380-G Datasheet

Current PartRFQ

CDBA3100-G

Comchip TechnologyIn Stock: 2341CDBA3100-G Datasheet

DirectRFQ

CDBA3100-HF

Comchip TechnologyIn Stock: 95488CDBA3100-HF Datasheet

DirectRFQ

SK38A-TP

Micro Commercial CoIn Stock: 2302SK38A-TP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CDBA380-G is determined by the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

• Voltage - DC Reverse (Vr) (Max): Must equal or exceed 80V
• Current - Average Rectified (Io): Must equal or exceed 3A
• Voltage - Forward (Vf) (Max) @ If: Must not exceed 850 mV @ 3A
• Speed: Must maintain Fast Recovery ≤ 500ns, > 200mA (Io)
• Current - Reverse Leakage @ Vr: Must not exceed 500 µA @ rated voltage
• Package / Case: Must be DO-214AC (SMA) compatible
• Mounting Type: Must be Surface Mount

Secondary Compatibility Factors:

• Operating Temperature - Junction: Must support -55°C minimum and 150°C maximum
• Moisture Sensitivity Level: Must be MSL 1 or equivalent
• Technology: Schottky diode technology

The substitute parts identified below satisfy these criteria within the allowed parameter ranges for this product category.

Parameter Comparison

Engineering Selection Recommendations

CDBA3100-G and CDBA3100-HF (Comchip Technology)

These parts are direct functional upgrades from the CDBA380-G. Both maintain the same 3A current rating and DO-214AC package footprint while increasing the reverse voltage rating to 100V. CDBA3100-HF offers superior forward voltage characteristics (810 mV vs. 850 mV @ 3A) and is available in high-volume Tape & Reel packaging with 95,413 pieces in stock. Both parts carry active product status and ROHS3 compliance, ensuring long-term availability and regulatory alignment. The CDBA3100-G is available in Cut Tape & Digi-Reel® packaging with 2,280 pieces in stock.

SK38A-TP (Micro Commercial Co)

This part provides electrical equivalence at the original 80V rating with identical 3A current and 850 mV forward voltage specifications. The SK38A-TP maintains the same fast recovery speed and reverse leakage characteristics. However, the operating temperature range is limited to -50°C to 125°C (versus -55°C to 150°C for the main part), and the product status is obsolete. This part is suitable only when the reduced temperature range is acceptable for the application. Inventory availability is 2,200 pieces in Cut Tape packaging.

Recommended Primary Substitutes: CDBA3100-HF (active status, superior forward voltage, high inventory) or CDBA3100-G (active status, multiple packaging options).

Frequently Asked Questions (FAQ)

Q: Can CDBA3100-G or CDBA3100-HF be used as direct replacements for CDBA380-G?

A: Yes. Both parts maintain the same 3A current rating, DO-214AC package, surface mount configuration, and fast recovery speed. The 100V reverse voltage rating of these parts exceeds the 80V requirement of the CDBA380-G, providing enhanced voltage margin. Forward voltage and reverse leakage specifications remain within acceptable limits for equivalent circuit performance.

Q: What is the difference between CDBA3100-G and CDBA3100-HF?

A: Both parts are rated for 100V and 3A with identical package specifications. CDBA3100-HF offers lower forward voltage (810 mV vs. 850 mV @ 3A), reduced operating temperature minimum (-50°C vs. -55°C), and is supplied in Tape & Reel packaging with significantly higher inventory (95,413 vs. 2,280 pieces). CDBA3100-G is available in Cut Tape & Digi-Reel® packaging options.

Q: Is SK38A-TP a suitable alternative?

A: SK38A-TP provides electrical equivalence at the original 80V rating with identical current and forward voltage specifications. However, the operating temperature range is limited to -50°C to 125°C, which may not support applications requiring the full -55°C to 150°C range of the CDBA380-G. Additionally, SK38A-TP carries obsolete product status. This part is suitable only when temperature range limitations are acceptable.

Q: Are there package compatibility concerns with these substitutes?

A: All substitute parts use the DO-214AC (SMA) package, which is mechanically and electrically compatible with the CDBA380-G footprint. No PCB layout modifications are required. Packaging format (Cut Tape, Digi-Reel®, or Tape & Reel) affects procurement and assembly handling but does not impact electrical performance or board-level compatibility.

Q: What compliance certifications apply to these substitute parts?

A: CDBA3100-G and CDBA3100-HF carry ROHS3 compliance and REACH Unaffected status. SK38A-TP also carries ROHS3 compliance and REACH Unaffected status. All parts have MSL 1 (Unlimited) moisture sensitivity rating. ECCN classification is EAR99 for all parts, and HTSUS code is 8541.10.0080.

Q: Why is the CDBA380-G classified as obsolete?

A: The CDBA380-G is listed as obsolete by the manufacturer. The CDBA3100 series (both -G and -HF variants) represents the active product line continuation, offering improved specifications and guaranteed long-term availability. Transition to CDBA3100-HF or CDBA3100-G is recommended for new designs and ongoing production support.