CDBD20100-HF Schottky Diode Array Equivalent & Substitute Parts

Part Overview

The CDBD20100-HF is a Schottky diode array manufactured by Comchip Technology, configured as 1 pair common cathode with 100V reverse voltage rating and 20A average rectified current per diode. The device is packaged in TO-263-3 D2PAK surface mount configuration. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. The fast recovery characteristic (≤500ns, >200mA) and low forward voltage drop make this component suitable for high-frequency rectification applications.

Substiute Parts

CDBD20100-HF

Comchip TechnologyIn Stock: 1065CDBD20100-HF Datasheet

Current PartRFQ

CDBD20100-G

Comchip TechnologyIn Stock: 697CDBD20100-G Datasheet

Parametric EquivalentRFQ

MBRS25100CT MNG

Taiwan Semiconductor CorporationIn Stock: 860MBRS25100CT MNG Datasheet

MFR RecommendedRFQ

NRVBB20100CTT4G

onsemiIn Stock: 1286NRVBB20100CTT4G Datasheet

MFR RecommendedRFQ

STPS10H100CG-TR

STMicroelectronicsIn Stock: 4995STPS10H100CG-TR Datasheet

MFR RecommendedRFQ

VB40100G-E3/4W

Vishay General Semiconductor - Diodes DivisionIn Stock: 1006VB40100G-E3/4W Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CDBD20100-HF is determined by strict adherence to the following electrical and mechanical parameters:

Critical Matching Parameters:

• Diode Configuration: 1 Pair Common Cathode (mandatory)
• Technology: Schottky (mandatory)
• Voltage - DC Reverse (Vr) Max: 100 V (mandatory)
• Package / Case: TO-263-3, D2PAK, TO-263AB (mandatory)
• Mounting Type: Surface Mount (mandatory)
• Speed: Fast Recovery ≤500ns, >200mA (Io) (mandatory)

Allowable Variation Parameters:

• Current - Average Rectified (Io) per Diode: Equal to or greater than 20A
• Voltage - Forward (Vf) Max @ If: Within acceptable operating range
• Current - Reverse Leakage @ Vr: Equal to or less than 500 µA @ 100 V
• Operating Temperature - Junction: Equal to or greater than -55°C to 150°C range
• RoHS and MSL compliance: ROHS3 Compliant, MSL 1 (Unlimited)

Substitute parts are grouped into two categories:

Category 1: Parametric Equivalents (Identical Specifications) Parts that match all critical and allowable parameters without variation.

Category 2: Functional Substitutes (Upgraded or Equivalent Performance) Parts that maintain all critical parameters but may have enhanced current ratings, improved leakage characteristics, or extended temperature ranges, ensuring direct functional replacement capability.

Parameter Comparison

Engineering Selection Recommendations

CDBD20100-G (Comchip Technology)

This part is a parametric equivalent to the CDBD20100-HF with identical electrical specifications. The primary distinction is product status: CDBD20100-G is active, whereas the main part is obsolete. This substitute provides direct replacement capability with no performance trade-offs. Packaging differs only in format (Tape & Reel vs. standard), which does not affect electrical or mechanical compatibility. ROHS3 compliance and MSL 1 rating match the original specification. Current inventory of 647 pieces supports procurement continuity.

VB40100G-E3/4W (Vishay General Semiconductor - Diodes Division)

This part maintains identical current rating (20A), reverse voltage (100V), and package configuration (TO-263-3 D2PAK). Forward voltage is marginally lower (810 mV @ 20A vs. 850 mV @ 10A), indicating improved efficiency characteristics. Reverse leakage matches at 500 µA @ 100V. Operating temperature range is -40°C to 150°C, which covers the original -55°C to 150°C specification at the upper end. ROHS3 compliance and MSL 1 rating are maintained. The TMBS® series designation indicates Vishay's optimized Schottky technology. This part is suitable for applications where the lower operating temperature limit of -40°C is acceptable. Current inventory of 912 pieces supports immediate procurement.

MBRS25100CT MNG (Taiwan Semiconductor Corporation)

This part provides upgraded current capacity (25A vs. 20A per diode) while maintaining 100V reverse voltage and TO-263-3 D2PAK packaging. Forward voltage is 920 mV @ 25A, which is higher than the original specification measured at 10A. Reverse leakage is improved at 100 µA @ 100V. Operating temperature range matches at -55°C to 150°C. ROHS3 compliance and MSL 1 rating are maintained. The higher current rating provides design margin for applications approaching the 20A limit. Current inventory of 809 pieces supports procurement. This part is suitable for applications requiring enhanced current capacity within the same voltage and package envelope.

NRVBB20100CTT4G (onsemi SWITCHMODE™ Series)

This part provides reduced current rating (10A vs. 20A per diode) with maintained 100V reverse voltage and TO-263-3 D2PAK packaging. Forward voltage matches at 850 mV @ 10A. Reverse leakage is improved at 100 µA @ 100V. Operating temperature range is extended to -65°C to 175°C, providing enhanced thermal performance. ROHS3 compliance and MSL 1 rating are maintained. This part is suitable for applications where current requirements are 10A or less and extended temperature range is beneficial. Current inventory of 1260 pieces supports procurement. The SWITCHMODE™ series designation indicates onsemi's optimized design for switching applications.

STPS10H100CG-TR (STMicroelectronics)

This part provides reduced current rating (5A vs. 20A per diode) with maintained 100V reverse voltage and TO-263-3 D2PAK packaging. Forward voltage is improved at 730 mV @ 5A, indicating superior efficiency at lower current levels. Reverse leakage is significantly improved at 3.5 µA @ 100V. Operating temperature maximum is 175°C. ROHS3 compliance and MSL 1 rating are maintained. This part is suitable only for applications with current requirements of 5A or less. The significantly lower reverse leakage makes this part advantageous for low-leakage applications. Current inventory of 4960 pieces provides the highest availability among all substitutes.

Frequently Asked Questions (FAQ)

Q: Can CDBD20100-G directly replace CDBD20100-HF in all applications?

A: Yes. CDBD20100-G is a parametric equivalent with identical electrical specifications: 100V reverse voltage, 20A average rectified current per diode, 850 mV forward voltage @ 10A, and fast recovery characteristics. Both are packaged in TO-263-3 D2PAK. The only difference is product status (active vs. obsolete) and packaging format (Tape & Reel vs. standard). Electrical and mechanical compatibility is complete.

Q: What is the key difference between the main part and VB40100G-E3/4W?

A: VB40100G-E3/4W maintains identical current rating (20A), voltage (100V), and package (TO-263-3 D2PAK). The forward voltage is slightly lower (810 mV @ 20A), indicating improved efficiency. The operating temperature range is -40°C to 150°C, which does not extend to the original -55°C lower limit. If your application requires operation below -40°C, this part is not suitable. Otherwise, it provides direct replacement with efficiency benefits.

Q: Can I use MBRS25100CT MNG as a drop-in replacement for CDBD20100-HF?

A: MBRS25100CT MNG is mechanically and electrically compatible in terms of package (TO-263-3 D2PAK), voltage (100V), and configuration (1 pair common cathode Schottky). However, the current rating is 25A vs. 20A, and forward voltage is 920 mV @ 25A. This part is suitable for applications where the 20A limit is approached and additional margin is desired. It is not a true drop-in replacement if your circuit is optimized for 20A operation, as the higher forward voltage may affect thermal performance.

Q: Why does STPS10H100CG-TR have such low reverse leakage compared to other parts?

A: STPS10H100CG-TR has a reverse leakage of only 3.5 µA @ 100V, compared to 500 µA for the main part. This is a characteristic of STMicroelectronics' Schottky technology and design optimization. However, this part is rated for only 5A average rectified current, making it unsuitable for applications requiring 20A. Use this part only if your application requires 5A or less and low reverse leakage is a critical design requirement.

Q: What is the significance of the operating temperature range differences?

A: NRVBB20100CTT4G extends to -65°C (vs. -55°C) and 175°C (vs. 150°C), providing a wider operating window. STPS10H100CG-TR specifies a maximum of 175°C. VB40100G-E3/4W specifies -40°C to 150°C, which does not extend to the original -55°C lower limit. Select based on your application's thermal requirements. If operation below -40°C is required, avoid VB40100G-E3/4W. If extended high-temperature operation is needed, NRVBB20100CTT4G or STPS10H100CG-TR are preferable.

Q: Are all substitute parts RoHS3 compliant and MSL 1?

A: Yes. All substitute parts listed (CDBD20100-G, MBRS25100CT MNG, NRVBB20100CTT4G, STPS10H100CG-TR, and VB40100G-E3/4W) are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity level. This ensures compatibility with modern manufacturing processes and long-term storage without special handling requirements.

Q: Can I use NRVBB20100CTT4G if my application requires 20A?

A: No. NRVBB20100CTT4G is rated for 10A average rectified current per diode, which is insufficient for 20A applications. Using this part in a 20A circuit will result in device overstress, reduced reliability, and potential failure. Use this part only if your actual current requirement is 10A or less.

Q: What packaging format differences exist among the substitutes?

A: All substitutes use the same mechanical package: TO-263-3, D2PAK (2 Leads + Tab), TO-263AB. Differences exist only in supplier packaging format: CDBD20100-G is supplied in Tape & Reel (TR), MBRS25100CT MNG in standard format, NRVBB20100CTT4G in Tape & Reel (TR), STPS10H100CG-TR in Cut Tape (CT) & Digi-Reel®, and VB40100G-E3/4W in Tube. These format differences do not affect electrical or mechanical compatibility; they relate only to procurement and handling logistics.