BAS70-02V-V-G-08 Equivalent & Substitute Parts

Part Overview

The BAS70-02V-V-G-08 is a Schottky diode rated for 70 V DC reverse voltage with 100 mA average rectified current in a surface mount SOD-523 package. Manufactured by Vishay General Semiconductor - Diodes Division, this component is classified as obsolete. Due to its obsolete status, equivalent and substitute parts are necessary to maintain design continuity and ensure component availability for new production and repair applications.

Key Parameters

Parameter	Value
Voltage - DC Reverse (Vr) (Max)	70 V
Current - Average Rectified (Io)	100 mA
Voltage - Forward (Vf) (Max) @ If	1 V @ 15 mA
Reverse Recovery Time (trr)	5 ns
Current - Reverse Leakage @ Vr	100 nA @ 50 V
Capacitance @ Vr, F	2 pF @ 0 V, 1 MHz
Package / Case	SC-79, SOD-523
Operating Temperature - Junction (Max)	125°C
Technology	Schottky
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the BAS70-02V-V-G-08 is determined by the following critical parameters:

Voltage Rating: All substitute parts must maintain the 70 V DC reverse voltage specification to ensure circuit protection and reliability.

Technology: Schottky diode technology is required to preserve the forward voltage characteristics and switching speed of the original design.

Reverse Recovery Time: The 5 ns specification must be maintained for applications requiring fast switching performance.

Reverse Leakage Current: The 100 nA @ 50 V specification ensures low standby current consumption.

Package Compatibility: Surface mount SOD-523 package is the primary form factor, though related package variants are acceptable if mechanical and electrical footprints align.

Compliance: RoHS3 compliance and MSL 1 rating are required for manufacturing and storage compatibility.

Substitute parts are grouped into two categories:

Category 1 - Direct Manufacturer Equivalent: BAS70-02V-G3-08 from Vishay General Semiconductor - Diodes Division maintains identical voltage and package specifications with enhanced current rating (200 mA) and active product status.

Category 2 - Cross-Manufacturer Alternative: CDBU70 from Comchip Technology provides equivalent voltage and switching characteristics in a related 0603/SOD-523F package with lower current rating (70 mA).

Parameter Comparison

Parameter	BAS70-02V-V-G-08	BAS70-02V-G3-08	CDBU70
Manufacturer	Vishay General Semiconductor	Vishay General Semiconductor	Comchip Technology
Product Status	Obsolete	Active	Active
Voltage - DC Reverse (Vr) (Max)	70 V	70 V	70 V
Current - Average Rectified (Io)	100 mA	200 mA	70 mA
Voltage - Forward (Vf) (Max) @ If	1 V @ 15 mA	1 V @ 15 mA	1 V @ 15 mA
Reverse Recovery Time (trr)	5 ns	5 ns	5 ns
Current - Reverse Leakage @ Vr	100 nA @ 50 V	100 nA @ 50 V	100 nA @ 50 V
Capacitance @ Vr, F	2 pF @ 0 V, 1 MHz	1.5 pF @ 0 V, 1 MHz	2 pF @ 0 V, 1 MHz
Package / Case	SC-79, SOD-523	SC-79, SOD-523	2-SMD, No Lead (0603/SOD-523F)
Operating Temperature - Junction (Max)	125°C	125°C	125°C
Technology	Schottky	Schottky	Schottky
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

BAS70-02V-G3-08 Selection Criteria:

The BAS70-02V-G3-08 is the primary substitute for the obsolete BAS70-02V-V-G-08. Both parts are manufactured by Vishay General Semiconductor - Diodes Division and share identical voltage ratings, forward voltage characteristics, and package specifications. The BAS70-02V-G3-08 carries active product status, ensuring long-term availability and supply chain stability. The higher current rating (200 mA versus 100 mA) provides design margin for applications operating at or near the original 100 mA specification. Compliance certifications are equivalent: both are ROHS3 compliant with MSL 1 rating. The slightly lower capacitance (1.5 pF versus 2 pF) may provide marginal benefits in high-frequency switching applications.

CDBU70 Selection Criteria:

The CDBU70 from Comchip Technology is an alternative substitute when package footprint flexibility is acceptable. This part maintains the 70 V voltage rating, 5 ns reverse recovery time, and identical forward voltage characteristics. The CDBU70 is rated for 70 mA average rectified current, which is below the original 100 mA specification and is suitable only for applications with reduced current requirements. The 0603/SOD-523F package differs from the original SOD-523, requiring board layout verification. The CDBU70 is active product status with equivalent compliance certifications.

Selection Logic:

For direct replacement in existing designs, BAS70-02V-G3-08 is the recommended choice due to identical package compatibility and superior current rating. CDBU70 is suitable for new designs where package footprint can be accommodated and current requirements do not exceed 70 mA.

Frequently Asked Questions (FAQ)

Q: Can BAS70-02V-G3-08 be used as a direct replacement for BAS70-02V-V-G-08?

A: Yes. Both parts share identical voltage ratings (70 V), forward voltage characteristics (1 V @ 15 mA), reverse recovery time (5 ns), and package specifications (SOD-523). The BAS70-02V-G3-08 has a higher current rating (200 mA versus 100 mA), which provides design margin and is compatible with circuits designed for the original 100 mA specification.

Q: What is the primary difference between BAS70-02V-G3-08 and CDBU70?

A: The primary differences are manufacturer, current rating, and package variant. BAS70-02V-G3-08 is manufactured by Vishay with 200 mA current rating in SOD-523 package. CDBU70 is manufactured by Comchip with 70 mA current rating in 0603/SOD-523F package. Both maintain 70 V voltage rating and 5 ns reverse recovery time.

Q: Is CDBU70 suitable for all applications using BAS70-02V-V-G-08?

A: CDBU70 is suitable only for applications where the average rectified current does not exceed 70 mA. The original BAS70-02V-V-G-08 is rated for 100 mA, so CDBU70 cannot be used in circuits requiring the full 100 mA specification. Additionally, the package footprint differs (0603/SOD-523F versus SOD-523), requiring board layout verification.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. BAS70-02V-G3-08 and CDBU70 are both ROHS3 compliant with MSL 1 rating, matching the compliance profile of the original BAS70-02V-V-G-08.

Q: Why is BAS70-02V-V-G-08 listed as obsolete?

A: The BAS70-02V-V-G-08 is classified as obsolete by the manufacturer. BAS70-02V-G3-08 from the same manufacturer is the active replacement, offering improved specifications and guaranteed long-term availability.

Q: What is the significance of the 5 ns reverse recovery time specification?

A: The 5 ns reverse recovery time indicates fast switching capability, essential for high-frequency rectification and switching applications. All substitute parts maintain this specification, ensuring equivalent performance in time-sensitive circuits.

Q: Can capacitance differences between BAS70-02V-G3-08 (1.5 pF) and BAS70-02V-V-G-08 (2 pF) affect circuit performance?

A: The capacitance difference (0.5 pF) is minimal and typically negligible in most applications. In high-frequency circuits operating above 100 MHz, the lower capacitance of BAS70-02V-G3-08 may provide marginal improvements in switching speed and reduced parasitic effects.

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