CDBD2045-G Schottky Diode Array Equivalent & Substitute Parts

Part Overview

The CDBD2045-G is a Schottky diode array manufactured by Comchip Technology, configured as 1 pair common cathode with 45V reverse voltage rating and 20A average rectified current per diode. The device is packaged in TO-263-3 D2PAK surface mount configuration and is currently in active product status with RoHS3 compliance.

Substitute parts are necessary when the CDBD2045-G experiences supply constraints, extended lead times, or when design requirements permit operation within the electrical and mechanical parameter tolerances of alternative qualified manufacturers' offerings.

Substiute Parts

CDBD2045-G

Comchip TechnologyIn Stock: 968CDBD2045-G Datasheet

Current PartRFQ

MBRB3045CT-E3/45

Vishay General Semiconductor - Diodes DivisionIn Stock: 1220MBRB3045CT-E3/45 Datasheet

MFR RecommendedRFQ

VS-MBRB4045CTLHM3

Vishay General Semiconductor - Diodes DivisionIn Stock: 1555VS-MBRB4045CTLHM3 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CDBD2045-G is determined by strict adherence to the following electrical and mechanical parameters:

Mandatory Matching Parameters:

• Diode Configuration: 1 Pair Common Cathode
• Technology: Schottky
• Voltage - DC Reverse (Vr) (Max): 45 V (minimum requirement)
• Current - Average Rectified (Io) (per Diode): 20 A (minimum requirement)
• Package / Case: TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
• Mounting Type: Surface Mount
• Speed: Fast Recovery ≤ 500ns, > 200mA (Io)

Allowable Parameter Variations:

• Voltage - Forward (Vf) (Max) @ If: May vary within manufacturer specifications
• Current - Reverse Leakage @ Vr: May vary within manufacturer specifications
• Operating Temperature - Junction: May extend beyond -55°C to 125°C range
• Product Status: Active or Last Time Buy acceptable
• Compliance: RoHS3 and REACH status must be maintained

Two substitute parts meet these criteria and are listed below.

Parameter Comparison

Engineering Selection Recommendations

VS-MBRB4045CTLHM3 (Vishay General Semiconductor - Diodes Division)

This substitute provides direct electrical and mechanical equivalence to the CDBD2045-G. Both devices support 45V reverse voltage and 20A average rectified current per diode in identical TO-263-3 D2PAK packaging. The VS-MBRB4045CTLHM3 is currently in active product status with RoHS3 compliance and MSL 1 rating. This part includes automotive-grade qualification (AEC-Q101) and extended operating temperature range (-65°C to 150°C), providing additional design margin. Current inventory availability is 1538 pieces.

MBRB3045CT-E3/45 (Vishay General Semiconductor - Diodes Division)

This substitute is electrically compatible for applications where the 20A current requirement can be reduced to 15A per diode. The device maintains 45V reverse voltage rating, identical package configuration, and fast recovery Schottky technology. The MBRB3045CT-E3/45 is RoHS3 compliant with MSL 1 rating and extended operating temperature range (-65°C to 150°C). Product status is Last Time Buy, indicating limited future availability. Current inventory is 1115 pieces. This option is suitable only for designs with current requirements at or below 15A per diode.

Frequently Asked Questions (FAQ)

Q: Can the VS-MBRB4045CTLHM3 be used as a direct replacement for the CDBD2045-G?

A: Yes. Both devices are configured as 1 pair common cathode Schottky diode arrays with 45V reverse voltage and 20A average rectified current per diode. Both use TO-263-3 D2PAK surface mount packaging. Electrical and mechanical parameters are compatible for direct substitution.

Q: What is the difference between the two substitute parts?

A: The primary difference is current rating. The VS-MBRB4045CTLHM3 maintains the 20A per diode specification matching the CDBD2045-G. The MBRB3045CT-E3/45 has a reduced current rating of 15A per diode. Both share identical package, voltage rating, and Schottky technology. The VS-MBRB4045CTLHM3 includes automotive-grade qualification (AEC-Q101) and active product status, while the MBRB3045CT-E3/45 is Last Time Buy.

Q: Are there packaging differences between these parts?

A: No. All three parts use TO-263-3 D2PAK (2 Leads + Tab) TO-263AB surface mount packaging. PCB footprints and thermal characteristics are identical.

Q: What is the significance of the Last Time Buy status for MBRB3045CT-E3/45?

A: Last Time Buy status indicates the manufacturer will discontinue this part after current inventory is depleted. This part should be selected only when current requirements are confirmed at 15A or below per diode, and only if long-term supply is not critical.

Q: Do all three parts meet RoHS3 compliance?

A: Yes. The CDBD2045-G, VS-MBRB4045CTLHM3, and MBRB3045CT-E3/45 are all RoHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating.

Q: What is the operating temperature range difference?

A: The CDBD2045-G operates from -55°C to 125°C junction temperature. Both Vishay substitutes extend this range to -65°C to 150°C, providing additional thermal margin for demanding applications.

Q: Can MBRB3045CT-E3/45 be used in a 20A application?

A: No. The MBRB3045CT-E3/45 is rated for 15A average rectified current per diode. Using it in a 20A application exceeds the device specification and is not permitted.