CDBF00340-HF Schottky Diode Equivalent & Substitute Parts

Part Overview

The CDBF00340-HF is a Schottky rectifier diode manufactured by Comchip Technology, rated for 40V DC reverse voltage with 30mA average rectified current. This component is designed for surface mount applications in the 1005/SOD-323F package format. The part is currently classified as obsolete, making identification of equivalent and substitute components essential for ongoing production support and design continuity. Substitute parts must maintain identical electrical performance and mechanical compatibility to ensure direct replacement capability without circuit redesign.

Substiute Parts

CDBF00340-HF

Comchip TechnologyIn Stock: 20387CDBF00340-HF Datasheet

Current PartRFQ

CDBFR00340

Comchip TechnologyIn Stock: 40161CDBFR00340 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CDBF00340-HF is determined by strict equivalence across the following electrical and mechanical parameters:

Electrical Equivalence Criteria:

• Voltage - DC Reverse (Vr) (Max): 40 V
• Current - Average Rectified (Io): 30 mA
• Voltage - Forward (Vf) (Max) @ If: 370 mV @ 1 mA
• Current - Reverse Leakage @ Vr: 1 µA @ 40 V
• Capacitance @ Vr, F: 1.5 pF @ 1V, 1MHz
• Technology: Schottky
• Speed Classification: Small Signal ≤ 200mA (Io), Any Speed

Mechanical Equivalence Criteria:

• Package / Case: 1005 (2512 Metric)
• Supplier Device Package: 1005/SOD-323F
• Mounting Type: Surface Mount

The substitute part CDBFR00340 meets all electrical and mechanical equivalence requirements and is therefore classified as a parametric equivalent.

Parameter Comparison

Engineering Selection Recommendations

The CDBFR00340 is a direct parametric equivalent to the CDBF00340-HF. All electrical specifications, mechanical dimensions, and package footprints are identical. The primary distinction is product status: CDBF00340-HF is obsolete while CDBFR00340 is active and currently in production.

For new designs or ongoing production requiring this diode specification, CDBFR00340 is the appropriate selection. Both parts carry identical compliance certifications: ROHS3 Compliant, REACH Unaffected, and MSL Level 1 (Unlimited). The substitute part is available in Tape & Reel packaging format, which is standard for high-volume surface mount assembly operations.

No electrical circuit modifications, PCB layout adjustments, or thermal management changes are required when substituting CDBFR00340 for CDBF00340-HF.

Frequently Asked Questions (FAQ)

Q: Can CDBFR00340 be used as a direct replacement for CDBF00340-HF?

A: Yes. CDBFR00340 is a parametric equivalent with identical electrical ratings (40V reverse voltage, 30mA average rectified current, 370mV forward voltage at 1mA), identical reverse leakage current (1µA @ 40V), identical capacitance (1.5pF @ 1V, 1MHz), and identical package format (1005/SOD-323F). No circuit redesign is required.

Q: What is the difference between CDBF00340-HF and CDBFR00340?

A: The parts are electrically and mechanically identical. The primary difference is product status: CDBF00340-HF is obsolete, while CDBFR00340 is active. Additionally, CDBFR00340 is supplied in Tape & Reel packaging, whereas CDBF00340-HF was supplied in bulk format.

Q: Are there any compliance or certification differences?

A: No. Both parts carry identical compliance certifications: ROHS3 Compliant, REACH Unaffected, and Moisture Sensitivity Level 1 (Unlimited). ECCN and HTSUS classifications are identical.

Q: Does the packaging format affect electrical performance?

A: No. Tape & Reel packaging (CDBFR00340) and bulk packaging (CDBF00340-HF) contain identical components. The packaging format affects only handling, storage, and assembly logistics, not electrical or thermal characteristics.

Q: What is the operating temperature range?

A: The maximum junction operating temperature is 125°C for both parts. Specific minimum operating temperature is not provided in the component specifications.

Q: Can these parts be used in high-frequency applications?

A: These are classified as small signal Schottky diodes with speed rating "Small Signal ≤ 200mA (Io), Any Speed." They are suitable for applications within the specified current and voltage ratings. Specific frequency limitations are not provided in the component data.