CDBC2100LR-HF Schottky Diode Equivalent & Substitute Parts

Part Overview

The CDBC2100LR-HF is an active Schottky rectifier diode manufactured by Comchip Technology, rated for 100V DC reverse voltage and 2A average rectified current in a surface mount DO-214AB (SMC) package. This component is designed for fast recovery applications with switching speeds ≤500ns and operates across a junction temperature range of -50°C to 150°C. The part is RoHS3 compliant with MSL 1 (unlimited moisture sensitivity level) and maintains 820 pieces in current inventory stock.

Equivalent and substitute parts are identified when design requirements permit higher current ratings, extended temperature ranges, or alternative manufacturer sourcing while maintaining core electrical specifications and package compatibility.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	100	V
Current - Average Rectified (Io)	2	A
Voltage - Forward (Vf) (Max) @ If	750 mV @ 2 A	mV
Speed	Fast Recovery ≤500ns, >200mA (Io)	ns
Current - Reverse Leakage @ Vr	500	µA @ 100 V
Capacitance @ Vr, F	30	pF @ 4V, 1MHz
Package / Case	DO-214AB, SMC	—
Operating Temperature - Junction	-50 to 150	°C
Technology	Schottky	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution eligibility for the CDBC2100LR-HF is determined by the following criteria:

Mandatory Compatibility Parameters:

Voltage - DC Reverse (Vr) (Max): Must equal or exceed 100V
Package / Case: Must be DO-214AB or SMC equivalent
Technology: Must be Schottky diode
Speed: Must maintain Fast Recovery ≤500ns, >200mA (Io)
Current - Reverse Leakage @ Vr: Must not exceed 500µA @ 100V
RoHS Status: Must maintain ROHS3 compliance

Allowable Variation Parameters:

Current - Average Rectified (Io): May exceed 2A (higher current rating acceptable)
Voltage - Forward (Vf) (Max) @ If: Minor variations acceptable within application tolerance
Operating Temperature - Junction: May extend beyond -50°C to 150°C range
Capacitance @ Vr, F: Variations acceptable if not specified as critical parameter
Packaging Format: Tape & Reel (TR) or Cut Tape (CT) formats interchangeable for equivalent function

Two substitute parts meet these criteria: SL510-TP (Micro Commercial Co, 5A rating) and VS-30BQ100HM3/9AT (Vishay General Semiconductor, 3A rating with automotive qualification).

Parameter Comparison

Parameter	CDBC2100LR-HF (Main)	SL510-TP (Substitute)	VS-30BQ100HM3/9AT (Substitute)
Manufacturer	Comchip Technology	Micro Commercial Co	Vishay General Semiconductor
Voltage - DC Reverse (Vr) (Max)	100 V	100 V	100 V
Current - Average Rectified (Io)	2 A	5 A	3 A
Voltage - Forward (Vf) (Max) @ If	750 mV @ 2 A	700 mV @ 5 A	790 mV @ 3 A
Speed	Fast Recovery ≤500ns, >200mA (Io)	Fast Recovery ≤500ns, >200mA (Io)	Fast Recovery ≤500ns, >200mA (Io)
Current - Reverse Leakage @ Vr	500 µA @ 100 V	500 µA @ 100 V	500 µA @ 100 V
Package / Case	DO-214AB, SMC	DO-214AB, SMC	DO-214AB, SMC
Operating Temperature - Junction	-50°C to 150°C	-55°C to 150°C	-55°C to 175°C
Technology	Schottky	Schottky	Schottky
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active	Active

Engineering Selection Recommendations

SL510-TP (Micro Commercial Co): This substitute provides a 5A current rating, exceeding the CDBC2100LR-HF specification of 2A. The part maintains identical 100V reverse voltage rating, DO-214AB package compatibility, and fast recovery speed characteristics. Forward voltage is 700mV @ 5A, which is lower than the main part's 750mV @ 2A. Operating temperature range extends to -55°C minimum, providing enhanced low-temperature performance. RoHS3 compliance and MSL 1 rating match the original specification. This substitute is suitable for applications requiring higher current capacity within the same voltage and package envelope.

VS-30BQ100HM3/9AT (Vishay General Semiconductor): This substitute provides a 3A current rating, intermediate between the main part and the SL510-TP option. The part maintains 100V reverse voltage and DO-214AB package compatibility with identical fast recovery speed. Forward voltage is 790mV @ 3A. Operating temperature range extends to -55°C minimum and 175°C maximum, providing the widest thermal operating window. This part carries AEC-Q101 automotive qualification and Vishay's automotive-grade designation. RoHS3 compliance and MSL 1 rating are maintained. This substitute is suitable for applications requiring automotive-grade reliability or extended high-temperature operation.

Both substitutes maintain all mandatory compatibility parameters. Selection between them depends on current requirement (5A vs. 3A) and thermal/qualification requirements.

Frequently Asked Questions (FAQ)

Q: Can SL510-TP replace CDBC2100LR-HF in all applications?

A: SL510-TP is electrically compatible as a substitute when the application circuit can accommodate a 5A-rated device in place of a 2A-rated device. The higher current rating does not create incompatibility; it provides additional margin. Package compatibility (DO-214AB) and electrical parameters (100V reverse voltage, fast recovery speed, identical reverse leakage) are maintained. Verify PCB layout and thermal management are adequate for the substitute part.

Q: What is the difference between the two substitute options?

A: SL510-TP provides 5A current capacity, while VS-30BQ100HM3/9AT provides 3A capacity. VS-30BQ100HM3/9AT includes AEC-Q101 automotive qualification and operates to 175°C maximum junction temperature, compared to 150°C for SL510-TP. Both maintain 100V reverse voltage and DO-214AB package compatibility. Select based on current requirement and thermal/qualification needs.

Q: Are packaging formats (Tape & Reel vs. Cut Tape) interchangeable?

A: Yes. CDBC2100LR-HF is supplied in Tape & Reel (TR) format. SL510-TP is supplied in Tape & Reel (TR) format. VS-30BQ100HM3/9AT is supplied in Cut Tape (CT) & Digi-Reel® format. All formats contain identical components; packaging format differences affect only handling and storage logistics, not electrical or mechanical compatibility.

Q: Do all three parts meet RoHS3 compliance?

A: Yes. CDBC2100LR-HF, SL510-TP, and VS-30BQ100HM3/9AT are all RoHS3 compliant with MSL 1 (unlimited moisture sensitivity level). All parts are suitable for applications requiring RoHS3 certification.

Q: What is the significance of the AEC-Q101 qualification on VS-30BQ100HM3/9AT?

A: AEC-Q101 is an automotive industry qualification standard for discrete semiconductors. VS-30BQ100HM3/9AT carries this qualification, indicating it meets automotive reliability and quality requirements. This qualification is relevant only if the application requires automotive-grade components. For non-automotive applications, this qualification provides no additional benefit but does not prevent use.

Q: Can forward voltage differences affect circuit performance?

A: Forward voltage differences are minor across all three parts (750mV, 700mV, and 790mV at their respective rated currents). These variations fall within typical circuit design tolerances for Schottky diode applications. Verify that the application circuit design accommodates the forward voltage specification of the selected substitute part.

Q: What is the operating temperature significance?

A: CDBC2100LR-HF operates from -50°C to 150°C junction temperature. SL510-TP extends the minimum to -55°C. VS-30BQ100HM3/9AT extends both minimum to -55°C and maximum to 175°C. Select based on application thermal requirements. Extended temperature range does not create incompatibility; it provides additional operational margin in extreme temperature environments.

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