ACDBCT340-HF Equivalent & Substitute Parts

Part Overview

The ACDBCT340-HF is a Schottky rectifier diode manufactured by Comchip Technology, rated for 40 V DC reverse voltage and 3 A average rectified current in a surface mount 3220/DO-214AB package. This component is classified as Last Time Buy, indicating discontinued production status. Equivalent and substitute parts are necessary to ensure design continuity and procurement availability for applications requiring 40 V, 3 A Schottky diode functionality.

Key Parameters

Parameter	Value
Technology	Schottky
Voltage - DC Reverse (Vr) (Max)	40 V
Current - Average Rectified (Io)	3 A
Voltage - Forward (Vf) (Max) @ If	500 mV @ 3 A
Speed	Fast Recovery ≤ 500 ns, > 200 mA (Io)
Current - Reverse Leakage @ Vr	500 µA @ 40 V
Mounting Type	Surface Mount
Package / Case	2-SMD, No Lead
Operating Temperature - Junction	-55°C ~ 125°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the ACDBCT340-HF is determined by strict equivalence across the following critical parameters:

Mandatory Equivalence Criteria:

Voltage - DC Reverse (Vr) (Max): 40 V
Current - Average Rectified (Io): 3 A
Voltage - Forward (Vf) (Max) @ If: 500 mV @ 3 A
Speed: Fast Recovery ≤ 500 ns, > 200 mA (Io)
Current - Reverse Leakage @ Vr: 500 µA @ 40 V
Mounting Type: Surface Mount
Package / Case: 2-SMD, No Lead
Operating Temperature - Junction: -55°C ~ 125°C
RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level (MSL): 1 (Unlimited)

All three substitute parts—CD214A-B340R, CD214B-B340R, and CD214C-B340R—manufactured by Bourns Inc., meet these mandatory electrical and mechanical parameters. Variations in capacitance (180 pF to 300 pF @ 4 V, 1 MHz) and packaging format (Cut Tape & Digi-Reel® or Tape & Reel) do not affect functional substitution for standard rectification applications.

Parameter Comparison

Parameter	ACDBCT340-HF (Comchip)	CD214A-B340R (Bourns)	CD214B-B340R (Bourns)	CD214C-B340R (Bourns)
Technology	Schottky	Schottky	Schottky	Schottky
Voltage - DC Reverse (Vr) (Max)	40 V	40 V	40 V	40 V
Current - Average Rectified (Io)	3 A	3 A	3 A	3 A
Voltage - Forward (Vf) (Max) @ If	500 mV @ 3 A	500 mV @ 3 A	500 mV @ 3 A	500 mV @ 3 A
Speed	Fast Recovery ≤ 500 ns, > 200 mA (Io)	Fast Recovery ≤ 500 ns, > 200 mA (Io)	Fast Recovery ≤ 500 ns, > 200 mA (Io)	Fast Recovery ≤ 500 ns, > 200 mA (Io)
Current - Reverse Leakage @ Vr	500 µA @ 40 V	500 µA @ 40 V	500 µA @ 40 V	500 µA @ 40 V
Capacitance @ Vr, F	180 pF @ 4 V, 1 MHz	300 pF @ 4 V, 1 MHz	250 pF @ 4 V, 1 MHz	180 pF @ 4 V, 1 MHz
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	2-SMD, No Lead	2-SMD, No Lead	2-SMD, No Lead	2-SMD, No Lead
Operating Temperature - Junction	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Last Time Buy	Active	Active	Active

Engineering Selection Recommendations

CD214C-B340R is the primary substitute for ACDBCT340-HF. This part maintains identical capacitance (180 pF @ 4 V, 1 MHz) and is supplied in Tape & Reel packaging, matching the original part's packaging format. Product status is Active, ensuring long-term availability. ROHS3 compliance and MSL 1 rating are maintained.

CD214B-B340R is a secondary substitute with equivalent electrical performance. Capacitance is 250 pF @ 4 V, 1 MHz. Supplied in Cut Tape & Digi-Reel® format. Product status is Active with 10,586 units in stock.

CD214A-B340R is a tertiary substitute with the highest capacitance specification (300 pF @ 4 V, 1 MHz). Supplied in Cut Tape & Digi-Reel® format. Product status is Active with 89,099 units in stock, providing maximum procurement availability.

All three substitutes are manufactured by Bourns Inc., an established supplier with AEC-Q101 equivalent qualification standards. Selection among the three should be based on packaging format requirements and capacitance tolerance for the specific application circuit.

Frequently Asked Questions (FAQ)

Q: Can CD214A-B340R, CD214B-B340R, and CD214C-B340R be used interchangeably with ACDBCT340-HF?

A: Yes, all three Bourns parts are parametric equivalents. They share identical voltage, current, forward voltage drop, recovery speed, reverse leakage, mounting type, package configuration, temperature range, and compliance ratings. Selection depends on packaging format preference and capacitance tolerance requirements.

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

A: The primary differences are capacitance and packaging format. CD214C-B340R has 180 pF capacitance and Tape & Reel packaging (matching the original). CD214B-B340R has 250 pF capacitance and Cut Tape & Digi-Reel® packaging. CD214A-B340R has 300 pF capacitance and Cut Tape & Digi-Reel® packaging. All other electrical parameters are identical.

Q: Why is ACDBCT340-HF marked as Last Time Buy?

A: Last Time Buy status indicates the manufacturer (Comchip Technology) has discontinued production. Substitute parts from active manufacturers ensure continued design support and procurement availability.

Q: Are the substitute parts RoHS compliant?

A: Yes, all three substitute parts (CD214A-B340R, CD214B-B340R, CD214C-B340R) are ROHS3 compliant, matching the original ACDBCT340-HF specification.

Q: What is the significance of MSL 1 (Unlimited) rating?

A: MSL 1 indicates unlimited shelf life without moisture bake-out requirements. All parts in this comparison, including substitutes, carry this rating, ensuring no additional handling or storage procedures are necessary.

Q: Can I use these parts in automotive applications?

A: The original ACDBCT340-HF carries automotive grade qualification (AEC-Q101). The substitute parts from Bourns meet equivalent electrical and reliability standards for surface mount Schottky diodes in the 40 V, 3 A class. Consult application-specific requirements and supplier documentation for automotive qualification confirmation.

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