CDBP0130L-G Schottky Diode Equivalent & Substitute Parts

Part Overview

The CDBP0130L-G is a Schottky rectifier diode manufactured by Comchip Technology, rated for 30 V DC reverse voltage with 100 mA average rectified current in a surface mount SOD-723 package. This component is classified as obsolete product status. Identifying equivalent and substitute parts is necessary to maintain design continuity and ensure component availability for production and repair applications.

Key Parameters

Parameter	Value
Technology	Schottky
Voltage - DC Reverse (Vr) (Max)	30 V
Current - Average Rectified (Io)	100 mA
Voltage - Forward (Vf) (Max) @ If	350 mV @ 10 mA
Current - Reverse Leakage @ Vr	10 µA @ 10 V
Speed Classification	Small Signal ≤ 200 mA (Io), Any Speed
Mounting Type	Surface Mount
Package / Case	SOD-723
Operating Temperature - Junction (Max)	125°C
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the CDBP0130L-G is determined by the following critical parameters:

Primary Matching Criteria:

Voltage - DC Reverse (Vr) (Max): 30 V
Current - Average Rectified (Io): 100 mA
Technology: Schottky
Mounting Type: Surface Mount
Speed Classification: Small Signal ≤ 200 mA (Io), Any Speed

Secondary Compatibility Factors:

Package / Case compatibility or functional equivalence
Forward voltage characteristics
Reverse leakage current specifications
Operating temperature range
Moisture sensitivity level

The substitute parts identified below meet the primary matching criteria. Variations in package designation (SOD-723 versus EMD2/SC-79/SOD-523), forward voltage (350 mV versus 450 mV), reverse leakage current (10 µA versus 500 nA), and maximum junction temperature (125°C versus 150°C) are documented in the parameter comparison table. These variations must be evaluated against specific circuit requirements before implementation.

Parameter Comparison

Parameter	CDBP0130L-G	RB521G-30HF	RB500SM-30T2R	RB500SM-30FHT2R
Manufacturer	Comchip Technology	Comchip Technology	Rohm Semiconductor	Rohm Semiconductor
Product Status	Obsolete	Active	Active	Active
Technology	Schottky	Schottky	Schottky	Schottky
Voltage - DC Reverse (Vr) (Max)	30 V	30 V	30 V	30 V
Current - Average Rectified (Io)	100 mA	100 mA	100 mA	100 mA
Voltage - Forward (Vf) (Max) @ If	350 mV @ 10 mA	350 mV @ 10 mA	450 mV @ 10 mA	450 mV @ 10 mA
Current - Reverse Leakage @ Vr	10 µA @ 10 V	10 µA @ 10 V	500 nA @ 10 V	500 nA @ 10 V
Speed Classification	Small Signal ≤ 200 mA (Io), Any Speed	Small Signal ≤ 200 mA (Io), Any Speed	Small Signal ≤ 200 mA (Io), Any Speed	Small Signal ≤ 200 mA (Io), Any Speed
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	SOD-723	SOD-723	SC-79, SOD-523	SC-79, SOD-523
Operating Temperature - Junction (Max)	125°C	125°C	150°C	150°C
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
RoHS Status	Not specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Packaging Type	Not specified	Tape & Reel (TR)	Tape & Reel (TR)	Cut Tape (CT) & Digi-Reel®

Engineering Selection Recommendations

RB521G-30HF (Comchip Technology)

This part is the primary substitute for CDBP0130L-G. It maintains identical electrical specifications including 30 V reverse voltage, 100 mA average rectified current, 350 mV forward voltage at 10 mA, and 10 µA reverse leakage current. The package designation remains SOD-723. RB521G-30HF is active product status with ROHS3 compliance and is available in Tape & Reel packaging. This substitute provides direct functional equivalence with improved supply chain availability.

RB500SM-30T2R (Rohm Semiconductor)

This part meets the core electrical requirements of 30 V reverse voltage and 100 mA average rectified current. However, it exhibits higher forward voltage (450 mV @ 10 mA versus 350 mV) and significantly lower reverse leakage current (500 nA @ 10 V versus 10 µA). The package designation differs (SC-79, SOD-523 versus SOD-723), and the maximum junction temperature is higher (150°C versus 125°C). RB500SM-30T2R is active product status with ROHS3 compliance. This substitute is suitable where the higher forward voltage and lower leakage characteristics are acceptable or beneficial to circuit operation.

RB500SM-30FHT2R (Rohm Semiconductor)

This part meets the core electrical requirements of 30 V reverse voltage and 100 mA average rectified current. It exhibits the same electrical variations as RB500SM-30T2R: higher forward voltage (450 mV @ 10 mA) and lower reverse leakage current (500 nA @ 10 V). The package designation differs (SC-79, SOD-523 versus SOD-723), and the maximum junction temperature is higher (150°C versus 125°C). RB500SM-30FHT2R includes automotive grade qualification (AEC-Q101) and is active product status with ROHS3 compliance. This substitute is suitable for automotive applications or where enhanced reliability qualification is required.

Frequently Asked Questions (FAQ)

Q: Can RB521G-30HF be used as a direct replacement for CDBP0130L-G?

A: Yes. RB521G-30HF maintains identical electrical specifications and SOD-723 package designation. Both parts are Schottky diodes rated for 30 V reverse voltage, 100 mA average rectified current, 350 mV forward voltage at 10 mA, and 10 µA reverse leakage current at 10 V. RB521G-30HF is active product status with improved availability.

Q: What are the differences between the Rohm Semiconductor substitutes and the original part?

A: RB500SM-30T2R and RB500SM-30FHT2R differ from CDBP0130L-G in three key areas: (1) Forward voltage is 450 mV @ 10 mA instead of 350 mV, representing a 100 mV increase; (2) Reverse leakage current is 500 nA @ 10 V instead of 10 µA, representing a 20-fold reduction; (3) Package designation is SC-79 or SOD-523 instead of SOD-723. Maximum junction temperature is also higher at 150°C versus 125°C.

Q: Are the package differences between SOD-723 and SC-79/SOD-523 significant?

A: Package differences require physical board layout verification. SOD-723 and SC-79/SOD-523 are distinct surface mount packages with different footprints and pin configurations. PCB redesign or adapter solutions may be necessary if switching between these package types. RB521G-30HF maintains SOD-723 compatibility and eliminates this consideration.

Q: Which substitute is recommended for automotive applications?

A: RB500SM-30FHT2R includes automotive grade qualification and AEC-Q101 certification. This part is suitable for automotive applications where qualification standards are required. RB521G-30HF and RB500SM-30T2R do not specify automotive qualification.

Q: How do the electrical characteristic differences affect circuit performance?

A: The 100 mV increase in forward voltage (350 mV to 450 mV) in Rohm parts may increase power dissipation in high-current applications. The 20-fold reduction in reverse leakage current (10 µA to 500 nA) improves leakage performance. These differences must be evaluated against specific circuit requirements, thermal management capabilities, and application sensitivity to forward voltage variations.

Q: What is the significance of RoHS3 compliance on the substitute parts?

A: RB521G-30HF, RB500SM-30T2R, and RB500SM-30FHT2R are all ROHS3 compliant, indicating compliance with Restriction of Hazardous Substances regulations. The original CDBP0130L-G does not specify RoHS status. ROHS3 compliance is relevant for applications subject to environmental and regulatory requirements.

Q: Are all substitute parts available in the same packaging formats?

A: No. RB521G-30HF is available in Tape & Reel (TR) packaging. RB500SM-30T2R is available in Tape & Reel (TR) packaging. RB500SM-30FHT2R is available in Cut Tape (CT) and Digi-Reel® packaging. Packaging format selection depends on production volume and assembly equipment compatibility.

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