CDBV3-54-G Schottky Diode Equivalent & Substitute Parts

Part Overview

The CDBV3-54-G is a Schottky rectifier diode manufactured by Comchip Technology, rated for 30V DC reverse voltage and 200mA average rectified current in a surface mount SOT-323 package. This component is classified as obsolete, necessitating identification of active equivalent and substitute parts for ongoing design support and procurement continuity. Equivalent parts maintain identical electrical and mechanical specifications, while substitute parts may vary in specific parameters within acceptable application ranges.

Key Parameters

Parameter	Value	Unit
Technology	Schottky	—
Voltage - DC Reverse (Vr) (Max)	30	V
Current - Average Rectified (Io)	200	mA
Voltage - Forward (Vf) (Max) @ If	1	V @ 100 mA
Reverse Recovery Time (trr)	5	ns
Current - Reverse Leakage @ Vr	2	µA @ 25 V
Capacitance @ Vr, F	10	pF @ 1V, 1MHz
Package / Case	SC-70, SOT-323	—
Operating Temperature - Junction (Max)	125	°C
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution eligibility for the CDBV3-54-G is determined by the following critical parameters:

Primary Substitution Criteria:

Voltage - DC Reverse (Vr) (Max): 30V minimum
Current - Average Rectified (Io): 200mA minimum
Technology: Schottky
Mounting Type: Surface Mount
RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level: 1 (Unlimited)

Parametric Equivalents maintain all primary criteria identically and differ only in secondary characteristics such as reverse recovery time or packaging format (Tape & Reel vs. Cut Tape).

Upgrade Substitutes meet or exceed primary criteria and include additional qualifications such as automotive-grade certification (AEC-Q101) or extended temperature ranges.

Functional Substitutes meet voltage and technology requirements but may operate at reduced current ratings or with different package geometries, suitable for applications with lower current demands.

Parameter Comparison

Parameter	CDBV3-54-G (Main)	CDBV3-54-HF	BAT54WQ-7-F	SB007-03Q-TL-E	BAT54W
Manufacturer	Comchip Technology	Comchip Technology	Diodes Incorporated	onsemi	EVVO Semi
Product Status	Obsolete	Active	Active	Active	Active
Technology	Schottky	Schottky	Schottky	Schottky	Schottky
Voltage - DC Reverse (Vr) (Max)	30 V	30 V	30 V	30 V	30 V
Current - Average Rectified (Io)	200 mA	200 mA	200 mA	70 mA	200 mA
Voltage - Forward (Vf) (Max) @ If	1 V @ 100 mA	1 V @ 100 mA	1 V @ 100 mA	550 mV @ 70 mA	1 V @ 100 mA
Reverse Recovery Time (trr)	5 ns	4 ns	5 ns	10 ns	Not specified
Current - Reverse Leakage @ Vr	2 µA @ 25 V	2 µA @ 25 V	2 µA @ 25 V	5 µA @ 15 V	2 µA @ 25 V
Capacitance @ Vr, F	10 pF @ 1V, 1MHz	10 pF @ 1V, 1MHz	10 pF @ 1V, 1MHz	3 pF @ 10V, 1MHz	60 pF @ 0V, 1MHz
Package / Case	SC-70, SOT-323	SC-70, SOT-323	SC-70, SOT-323	SC-70, SOT-323	SOD-123
Operating Temperature - Junction	125°C (Max)	125°C (Max)	-65°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Automotive Grade / AEC-Q101	Not specified	Not specified	Yes	Not specified	Not specified

Engineering Selection Recommendations

CDBV3-54-HF (Parametric Equivalent - Preferred for Direct Replacement)

CDBV3-54-HF is the primary equivalent substitute for CDBV3-54-G. Both parts are manufactured by Comchip Technology and share identical electrical specifications: 30V reverse voltage, 200mA average rectified current, 1V forward voltage at 100mA, and 10pF capacitance. CDBV3-54-HF offers improved reverse recovery time (4ns vs. 5ns) and maintains active product status with 812 pieces in stock. The primary difference is packaging format (Tape & Reel vs. standard packaging), which does not affect electrical performance. This part is suitable for direct substitution in all applications.

BAT54WQ-7-F (Upgrade Substitute - Automotive Applications)

BAT54WQ-7-F, manufactured by Diodes Incorporated, meets all primary electrical specifications and adds automotive-grade qualification (AEC-Q101) with extended operating temperature range (-65°C to 125°C). This part is suitable for applications requiring automotive compliance or enhanced temperature performance. Electrical parameters are identical to the main part. High inventory availability (98,300 pieces) supports production continuity.

BAT54W (Parametric Equivalent - Alternative Package)

BAT54W, manufactured by EVVO Semi, maintains identical voltage, current, and forward voltage specifications but uses SOD-123 package instead of SOT-323. This part is suitable only for designs where SOD-123 footprint compatibility exists. Capacitance differs (60pF vs. 10pF), which may affect high-frequency circuit behavior. High inventory (95,400 pieces) supports availability.

SB007-03Q-TL-E (Functional Substitute - Reduced Current Applications)

SB007-03Q-TL-E, manufactured by onsemi, is suitable only for applications requiring maximum 70mA current (not 200mA). This part maintains 30V reverse voltage and Schottky technology but operates at reduced current capacity. Forward voltage is lower (550mV at 70mA). Package is 3-MCP, not SOT-323. This part is not recommended for direct replacement of CDBV3-54-G in 200mA applications.

Frequently Asked Questions (FAQ)

Q: Can CDBV3-54-HF replace CDBV3-54-G in all applications?

A: Yes. CDBV3-54-HF is a parametric equivalent with identical voltage (30V), current (200mA), forward voltage (1V @ 100mA), and capacitance (10pF) specifications. The only difference is improved reverse recovery time (4ns vs. 5ns) and packaging format (Tape & Reel). Both are ROHS3 compliant with MSL 1 rating.

Q: What is the difference between CDBV3-54-HF and BAT54WQ-7-F?

A: Both parts meet the primary electrical specifications of CDBV3-54-G. BAT54WQ-7-F adds automotive-grade qualification (AEC-Q101) and extended temperature range (-65°C to 125°C vs. 125°C maximum). CDBV3-54-HF is manufactured by Comchip Technology; BAT54WQ-7-F is manufactured by Diodes Incorporated. Select BAT54WQ-7-F for automotive applications; either part is acceptable for standard industrial applications.

Q: Why is BAT54W not recommended as a direct replacement?

A: BAT54W uses SOD-123 package instead of SOT-323, requiring different PCB footprint and layout. Additionally, capacitance is significantly higher (60pF vs. 10pF), which may affect circuit performance in high-frequency applications. Use BAT54W only if your design already accommodates SOD-123 package geometry.

Q: Can SB007-03Q-TL-E replace CDBV3-54-G?

A: SB007-03Q-TL-E is not suitable for direct replacement. While it maintains 30V reverse voltage and Schottky technology, it is rated for only 70mA average rectified current, not 200mA. Use this part only in applications with maximum 70mA current requirements.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts (CDBV3-54-HF, BAT54WQ-7-F, SB007-03Q-TL-E, and BAT54W) are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, matching the main part specification.

Q: Which substitute part has the best inventory availability?

A: BAT54WQ-7-F has the highest inventory with 98,300 pieces in stock, followed by BAT54W with 95,400 pieces. CDBV3-54-HF has 812 pieces available. SB007-03Q-TL-E has 7,774 pieces in stock.

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