CDBF00340 Equivalent & Substitute Parts

Part Overview

The CDBF00340 is a Schottky 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, which necessitates identification of equivalent substitute components for ongoing production and maintenance requirements. Equivalent parts maintain identical electrical and mechanical specifications while offering improved availability or alternative packaging configurations.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	40	V
Current - Average Rectified (Io)	30	mA
Voltage - Forward (Vf) (Max) @ If	370 mV @ 1 mA	mV
Current - Reverse Leakage @ Vr	1	µA @ 40 V
Capacitance @ Vr, F	1.5	pF @ 1V, 1MHz
Package / Case	1005 (2512 Metric)	-
Mounting Type	Surface Mount	-
Operating Temperature - Junction (Max)	125	°C
Technology	Schottky	-

Substitute Part Grouping Explanation

Substitution of the CDBF00340 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 CDBFR00340 meets all electrical and mechanical equivalence requirements and is therefore classified as a parametric equivalent substitute.

Parameter Comparison

Parameter	CDBF00340 (Main Part)	CDBFR00340 (Substitute)	Match Status
Manufacturer	Comchip Technology	Comchip Technology	Identical
Category	Diodes, Rectifiers	Diodes, Rectifiers	Identical
Technology	Schottky	Schottky	Identical
Voltage - DC Reverse (Vr) (Max)	40 V	40 V	Identical
Current - Average Rectified (Io)	30 mA	30 mA	Identical
Voltage - Forward (Vf) (Max) @ If	370 mV @ 1 mA	370 mV @ 1 mA	Identical
Current - Reverse Leakage @ Vr	1 µA @ 40 V	1 µA @ 40 V	Identical
Capacitance @ Vr, F	1.5 pF @ 1V, 1MHz	1.5 pF @ 1V, 1MHz	Identical
Package / Case	1005 (2512 Metric)	1005 (2512 Metric)	Identical
Supplier Device Package	1005/SOD-323F	1005/SOD-323F	Identical
Mounting Type	Surface Mount	Surface Mount	Identical
Operating Temperature - Junction (Max)	125°C	125°C	Identical
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Identical
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	Identical
REACH Status	REACH Unaffected	REACH Unaffected	Identical
Product Status	Obsolete	Active	Substitute is Active
Packaging	Bulk	Tape & Reel (TR)	Different Format

Engineering Selection Recommendations

The CDBFR00340 is the direct parametric equivalent substitute for the obsolete CDBF00340. Both components are manufactured by Comchip Technology and share identical electrical specifications and mechanical packaging.

Selection Basis:

The CDBFR00340 is recommended for new designs and production continuity because:

All electrical parameters match exactly: 40V reverse voltage, 30mA average rectified current, 370mV forward voltage at 1mA, 1µA reverse leakage at 40V, and 1.5pF capacitance.
Mechanical compatibility is confirmed: identical 1005/SOD-323F package and surface mount configuration.
Regulatory compliance is maintained: both parts are ROHS3 compliant, REACH unaffected, and carry identical moisture sensitivity ratings (MSL 1).
Product status advantage: CDBFR00340 is active and available with higher inventory levels (40,100 pcs vs. 3,200 pcs for the obsolete CDBF00340).
Packaging difference: CDBFR00340 is supplied in Tape & Reel format, which is standard for production environments and offers improved handling and automated assembly compatibility compared to bulk packaging.

Frequently Asked Questions (FAQ)

Q: Can CDBFR00340 be used as a direct replacement for CDBF00340 in existing designs?

A: Yes. The CDBFR00340 is a parametric equivalent with identical electrical and mechanical specifications. No circuit modifications are required. The only difference is the packaging format (Tape & Reel vs. bulk), which does not affect electrical performance or PCB assembly compatibility.

Q: What is the difference between CDBF00340 and CDBFR00340?

A: The components are electrically and mechanically identical. The primary difference is product status and packaging: CDBF00340 is obsolete and supplied in bulk packaging, while CDBFR00340 is active and supplied in Tape & Reel format. Both use the same 1005/SOD-323F package footprint.

Q: Are there any compliance or certification differences between these parts?

A: No. Both parts carry identical certifications: ROHS3 compliant, REACH unaffected, and MSL 1 (unlimited moisture sensitivity). ECCN and HTSUS classifications are identical.

Q: Is the Tape & Reel packaging of CDBFR00340 compatible with standard pick-and-place assembly equipment?

A: Yes. Tape & Reel packaging is the standard format for automated surface mount assembly. The 1005/SOD-323F package footprint remains unchanged, ensuring compatibility with existing PCB designs and assembly processes.

Q: What is the inventory status of these parts?

A: CDBF00340 has 3,200 pcs available but is classified as obsolete. CDBFR00340 has 40,100 pcs in stock and is actively produced. For new production orders, CDBFR00340 is the recommended choice due to superior availability and active product status.

Q: Can CDBFR00340 be used in high-temperature applications?

A: Both parts have identical maximum junction operating temperature of 125°C. Temperature performance is equivalent between the two components.

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