CDBC3100-HF Schottky Diode Equivalent & Substitute Parts

Part Overview

The CDBC3100-HF is a Schottky rectifier diode manufactured by Comchip Technology, rated for 100V DC reverse voltage and 3A average rectified current in a DO-214AB surface mount package. This component is classified as Active product status and is RoHS3 compliant. Equivalent and substitute parts are identified to support procurement flexibility, supply chain continuity, and design alternatives where electrical and mechanical parameters align within specified tolerances.

Substiute Parts

CDBC3100-HF

Comchip TechnologyIn Stock: 3037CDBC3100-HF Datasheet

Current PartRFQ

SS3H10HE3_B/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 10959SS3H10HE3_B/I Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CDBC3100-HF is determined by strict equivalence across the following critical parameters:

Electrical Parameters (Must Match or Exceed):

• Voltage - DC Reverse (Vr) (Max): 100V minimum
• Current - Average Rectified (Io): 3A minimum
• Technology: Schottky diode
• Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)

Mechanical Parameters (Must Match):

• Package / Case: DO-214AB, SMC (surface mount)
• Mounting Type: Surface Mount

Compliance Parameters (Must Match):

• RoHS Status: ROHS3 Compliant
• Product Status: Active

The substitute part SS3H10HE3_B/I satisfies all mandatory substitution criteria. Forward voltage (Vf) and reverse leakage current (Ir) are secondary selection factors and may vary within acceptable design margins. Operating temperature range may differ; design thermal requirements must be verified against application specifications.

Parameter Comparison

Engineering Selection Recommendations

SS3H10HE3_B/I (Vishay General Semiconductor - Diodes Division) is a direct substitute for CDBC3100-HF based on the following engineering criteria:

1. Electrical Equivalence: Both devices meet the 100V / 3A Schottky diode specification with identical voltage and current ratings. Forward voltage and reverse leakage current of the Vishay part are within acceptable design margins and present no functional incompatibility.

2. Package Compatibility: Both parts use DO-214AB (SMC) surface mount packaging, ensuring mechanical and thermal compatibility in existing PCB layouts without redesign.

3. Compliance Alignment: Both parts are RoHS3 compliant, REACH unaffected, and classified as Active product status, meeting current regulatory and supply chain requirements.

4. Automotive Qualification: The Vishay SS3H10HE3_B/I carries AEC-Q101 automotive qualification and operates across an extended temperature range (-65 to 175°C), providing additional design margin for applications requiring higher reliability or broader thermal operating conditions.

5. Availability: The Vishay substitute maintains higher inventory levels (10,913 pcs vs. 2,962 pcs), supporting procurement continuity and lead-time reduction.

Frequently Asked Questions (FAQ)

Q: Can SS3H10HE3_B/I replace CDBC3100-HF in existing designs without PCB modification?

A: Yes. Both devices use identical DO-214AB (SMC) surface mount packaging. No PCB layout changes are required. Electrical performance is equivalent within design specifications.

Q: What is the difference in forward voltage between these parts?

A: CDBC3100-HF specifies 810 mV maximum forward voltage at 3A, while SS3H10HE3_B/I specifies 800 mV maximum at 3A. The Vishay part exhibits lower forward voltage, which reduces power dissipation and heat generation. This difference is within typical design tolerances for Schottky diodes and presents no compatibility risk.

Q: Why does the Vishay part have lower reverse leakage current?

A: SS3H10HE3_B/I specifies 20 µA reverse leakage at 100V, compared to 500 µA for CDBC3100-HF. Lower reverse leakage is a performance advantage, reducing standby current and improving circuit efficiency. This does not affect substitution compatibility.

Q: Does the extended operating temperature range of SS3H10HE3_B/I affect substitution?

A: No. The Vishay part operates from -65 to 175°C, compared to -50 to 150°C for the Comchip part. The extended range provides additional thermal margin and is fully backward compatible. Applications operating within the original -50 to 150°C range experience no change in performance.

Q: Are both parts RoHS3 compliant?

A: Yes. Both CDBC3100-HF and SS3H10HE3_B/I are RoHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: What is the significance of AEC-Q101 qualification on the Vishay part?

A: AEC-Q101 is an automotive industry qualification standard. The Vishay SS3H10HE3_B/I carries this certification, indicating it meets automotive reliability and quality standards. This qualification is optional for general-purpose applications but provides additional assurance for automotive or high-reliability designs.

Q: Can I use these parts interchangeably in high-frequency switching applications?

A: Yes. Both parts are classified as Fast Recovery Schottky diodes with recovery time ≤ 500ns at currents > 200mA (Io), meeting the speed requirements for switching power supplies and high-frequency rectification circuits.

Q: What packaging options are available for these parts?

A: CDBC3100-HF is supplied in Tape & Reel (TR) packaging. SS3H10HE3_B/I is supplied in Cut Tape (CT) and Digi-Reel® packaging. Both formats are standard for surface mount assembly. Confirm packaging format with your procurement requirements before ordering.