NSVBASH19LT1G Equivalent & Substitute Parts

Part Overview

The NSVBASH19LT1G is a general-purpose rectifier diode manufactured by onsemi, rated for 120 V DC reverse voltage and 200 mA average rectified current in a surface mount SOT-23-3 package. This component is classified as Active product status and carries automotive-grade qualification under AEC-Q101 standard. The part is ROHS3 compliant with unlimited moisture sensitivity level (MSL 1).

Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter ranges. The primary substitute identified operates at a reduced maximum reverse voltage rating while maintaining all other critical electrical characteristics and package specifications.

Substiute Parts

NSVBASH19LT1G

onsemiIn Stock: 901NSVBASH19LT1G Datasheet

Current PartRFQ

BAS19-HE3-08

Vishay General Semiconductor - Diodes DivisionIn Stock: 15948BAS19-HE3-08 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the NSVBASH19LT1G is determined by the following critical parameters:

Electrical Compatibility Criteria:

• Forward voltage drop (Vf) at rated current must not exceed 1.25 V @ 200 mA
• Reverse recovery time (trr) must be 50 ns or faster
• Reverse leakage current must not exceed 100 nA @ 100 V
• Capacitance must be 5 pF or less @ 0V, 1MHz
• Current rating must support 200 mA average rectified current

Mechanical Compatibility Criteria:

• Package must be SOT-23-3 (TO-236-3, SC-59)
• Surface mount mounting type required

Compliance Criteria:

• Automotive grade qualification (AEC-Q101)
• ROHS3 compliance required
• MSL 1 (Unlimited) moisture sensitivity level

The identified substitute part BAS19-HE3-08 meets all mechanical and compliance requirements. The primary electrical difference is a reduced maximum reverse voltage rating of 100 V compared to the 120 V specification of the main part. All other electrical parameters remain equivalent within the specified tolerances.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection: NSVBASH19LT1G (onsemi)

The NSVBASH19LT1G is the recommended selection for new designs. This part maintains Active product status, ensuring long-term availability and supply chain stability. The 120 V reverse voltage rating provides design margin for applications requiring higher voltage tolerance. The extended junction temperature range to 175°C supports high-temperature operating environments. Full AEC-Q101 automotive qualification and ROHS3 compliance are confirmed.

Substitute Selection: BAS19-HE3-08 (Vishay)

The BAS19-HE3-08 is a qualified substitute for applications where the 100 V maximum reverse voltage rating is sufficient. This part carries identical forward voltage, reverse recovery time, and leakage current specifications. Both parts share the same SOT-23-3 package and automotive-grade AEC-Q101 qualification. However, the BAS19-HE3-08 carries Last Time Buy product status, indicating limited future availability. The reduced maximum junction temperature of 150°C may restrict use in high-temperature applications. This substitute is suitable only for existing designs or applications with specific voltage constraints below 100 V.

Compliance Verification

Both parts satisfy ROHS3 compliance requirements and carry unlimited moisture sensitivity level (MSL 1), eliminating special handling or storage requirements. Both are classified under ECCN EAR99 and HTSUS 8541.10.0070 for regulatory purposes.

Frequently Asked Questions (FAQ)

Q: Can BAS19-HE3-08 be used as a direct replacement for NSVBASH19LT1G in all applications?

A: No. The BAS19-HE3-08 has a maximum reverse voltage rating of 100 V compared to 120 V for the NSVBASH19LT1G. Substitution is valid only for circuits where the reverse voltage does not exceed 100 V. Additionally, the reduced maximum junction temperature of 150°C versus 175°C may limit use in high-temperature environments.

Q: Are the package dimensions identical between these two parts?

A: Yes. Both parts use the SOT-23-3 package (also designated TO-236-3 or SC-59). Physical footprint and pin configuration are identical, allowing direct PCB layout compatibility.

Q: What is the significance of the "Last Time Buy" status for BAS19-HE3-08?

A: Last Time Buy status indicates that the manufacturer has announced end-of-life for this part. New orders may be accepted for a limited period, but long-term availability cannot be guaranteed. For new product designs, the Active-status NSVBASH19LT1G is the preferred choice.

Q: Are both parts automotive-qualified?

A: Yes. Both NSVBASH19LT1G and BAS19-HE3-08 carry automotive-grade classification with AEC-Q101 qualification, meeting automotive industry reliability and quality standards.

Q: Do these parts require special handling or storage?

A: No. Both parts carry MSL 1 (Unlimited) moisture sensitivity level, indicating no moisture-related storage or handling restrictions. Standard component storage conditions are sufficient.

Q: What is the primary electrical difference between these diodes?

A: The primary difference is the maximum reverse voltage rating: 120 V for NSVBASH19LT1G versus 100 V for BAS19-HE3-08. All other electrical parameters, including forward voltage drop, reverse recovery time, and leakage current, are identical.

Q: Can I use NSVBASH19LT1G in place of BAS19-HE3-08?

A: Yes. The NSVBASH19LT1G can be used as a substitute for BAS19-HE3-08 in all applications. The higher voltage rating and extended temperature range of the NSVBASH19LT1G provide additional design margin without compromising performance in circuits designed for the lower-rated part.