NSVBAS21HT3G Equivalent & Substitute Parts

Part Overview

The NSVBAS21HT3G is a general-purpose rectifier diode manufactured by onsemi, rated for 250 V DC reverse voltage and 200 mA average rectified current in a surface mount SOD-323 package. This part is classified as Active product status and is ROHS3 compliant. Alternative equivalent and substitute parts are identified to support procurement flexibility, inventory management, and application-specific requirements where packaging or manufacturer preferences differ from the primary specification.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	250	V
Current - Average Rectified (Io)	200	mA
Voltage - Forward (Vf) (Max) @ If	1.25 V @ 200 mA	V
Reverse Recovery Time (trr)	50	ns
Current - Reverse Leakage @ Vr	100 nA @ 200 V	nA
Capacitance @ Vr, F	5 pF @ 0V, 1MHz	pF
Package / Case	SC-76, SOD-323	—
Mounting Type	Surface Mount	—
Operating Temperature - Junction	-55 to 150	°C
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the NSVBAS21HT3G are classified into two categories based on electrical and mechanical compatibility:

Parametric Equivalents share identical or functionally equivalent electrical characteristics within the allowed tolerance range:

Voltage - DC Reverse (Vr): 200 V to 250 V maximum
Current - Average Rectified (Io): 200 mA
Voltage - Forward (Vf): 1.25 V @ 200 mA or lower
Reverse Recovery Time (trr): 50 ns
Package / Case: SC-76, SOD-323
Mounting Type: Surface Mount
Operating Temperature Range: -55°C to 150°C minimum

Similar Parts meet the core electrical requirements but may differ in secondary parameters such as reverse voltage rating, current capacity, or manufacturer specifications. These parts are suitable for applications where the primary circuit requirements are satisfied within the specified voltage and current envelope.

All substitute parts maintain ROHS3 compliance, MSL 1 rating, and SOD-323 surface mount packaging to ensure mechanical and environmental compatibility with the original design.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max) [V]	Io [mA]	Vf (Max) [V]	trr [ns]	Packaging	Temp Range [°C]
NSVBAS21HT3G	onsemi	250	200	1.25 @ 200 mA	50	Tape & Reel (TR)	-55 to 150
BAS21AHT1G	onsemi	200	200	1.25 @ 200 mA	50	Cut Tape (CT) & Digi-Reel®	-55 to 150
BAS21HT1G	onsemi	250	200	1.25 @ 200 mA	50	Cut Tape (CT) & Digi-Reel®	-55 to 150
NSVBAS21AHT1G	onsemi	200	200	1.25 @ 200 mA	50	Tape & Reel (TR)	-55 to 150
NSVBAS21HT1G	onsemi	250	200	1.25 @ 200 mA	50	Cut Tape (CT) & Digi-Reel®	-55 to 150
BAS21WS-TP	Micro Commercial Co	250	200	1.25 @ 200 mA	50	Tape & Reel (TR)	-55 to 155
BAV20WS-7-F	Diodes Incorporated	150	200	1.25 @ 200 mA	50	Cut Tape (CT) & Digi-Reel®	-65 to 150
BAV21WS-7-F	Diodes Incorporated	200	200	1.25 @ 200 mA	50	Cut Tape (CT) & Digi-Reel®	-65 to 150
BAV21WS-AU_R1_000A1	Panjit International Inc.	200	200	1.0 @ 100 mA	50	Tape & Reel (TR)	-55 to 150
GSD2004WS-HE3-08	Vishay General Semiconductor - Diodes Division	240	225	1.0 @ 100 mA	50	Tape & Reel (TR)	-55 to 150
BAV21WS	EVVO Semi	250	250	1.25 @ 200 mA	50	Cut Tape (CT) & Digi-Reel®	-55 to 150

Engineering Selection Recommendations

Direct Parametric Equivalents (Preferred for Drop-In Replacement)

BAS21HT1G and NSVBAS21HT1G are direct parametric equivalents to NSVBAS21HT3G, matching all critical electrical specifications including 250 V reverse voltage rating and 200 mA current capacity. Both parts are onsemi products with Active product status and ROHS3 compliance. Selection between these alternatives depends on packaging format preference: BAS21HT1G is supplied in Cut Tape (CT) & Digi-Reel® format, while NSVBAS21HT1G is supplied in Tape & Reel (TR) format matching the original part.

Voltage-Reduced Equivalents (Application-Dependent)

BAS21AHT1G and NSVBAS21AHT1G provide 200 V reverse voltage rating with identical 200 mA current capacity and forward voltage characteristics. These parts are suitable for applications where circuit design does not require the full 250 V reverse voltage margin. NSVBAS21AHT1G includes AEC-Q101 automotive qualification, appropriate for automotive-grade applications.

Cross-Manufacturer Alternatives (Inventory Diversification)

BAS21WS-TP (Micro Commercial Co) provides full parametric equivalence at 250 V and 200 mA with extended operating temperature range to 155°C. BAV21WS-7-F (Diodes Incorporated) operates at 200 V reverse voltage with extended lower temperature range to -65°C. BAV21WS (EVVO Semi) exceeds the original specification with 250 mA current capacity while maintaining 250 V reverse voltage, suitable for applications requiring additional current margin.

Automotive-Grade Alternatives

BAV21WS-AU_R1_000A1 (Panjit International Inc.) and GSD2004WS-HE3-08 (Vishay) both carry AEC-Q101 automotive qualification. GSD2004WS-HE3-08 provides enhanced current capacity at 225 mA with 240 V reverse voltage rating.

Frequently Asked Questions (FAQ)

Q: Can BAS21AHT1G replace NSVBAS21HT3G in all applications?

A: BAS21AHT1G is suitable for applications where the circuit design operates within 200 V reverse voltage maximum. If the original design requires the full 250 V reverse voltage rating for safety margin or peak transient protection, BAS21AHT1G is not appropriate. Verify circuit requirements before substitution.

Q: What is the difference between Tape & Reel (TR) and Cut Tape (CT) & Digi-Reel® packaging?

A: Tape & Reel (TR) packaging supplies components on continuous reel format for high-volume automated assembly. Cut Tape (CT) & Digi-Reel® packaging provides components in tape format cut to specific quantities, suitable for lower-volume production or mixed-component orders. Both formats use identical SOD-323 component geometry and are mechanically compatible with standard surface mount assembly equipment.

Q: Is BAV21WS-7-F compatible with NSVBAS21HT3G?

A: BAV21WS-7-F operates at 200 V reverse voltage, which is lower than the original 250 V specification. This part is compatible only if the application circuit design does not require the 250 V reverse voltage rating. The forward voltage, current capacity, and package format are compatible.

Q: What does AEC-Q101 qualification indicate?

A: AEC-Q101 is an automotive industry qualification standard for discrete semiconductors. Parts carrying this qualification (NSVBAS21AHT1G, BAV21WS-AU_R1_000A1, GSD2004WS-HE3-08) meet automotive reliability and quality requirements. These parts are appropriate for automotive applications; non-qualified parts are suitable for general industrial and consumer applications.

Q: Can BAV21WS (EVVO Semi) be used as a direct replacement?

A: BAV21WS provides 250 mA current capacity compared to the original 200 mA specification, representing a performance upgrade. All other electrical parameters match the original part. This substitution is valid for applications where the higher current capacity does not create thermal or circuit design conflicts.

Q: Are all substitute parts ROHS3 compliant?

A: All substitute parts listed in this reference are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity rating, matching the environmental compliance profile of NSVBAS21HT3G.

Q: What is the significance of reverse recovery time (trr) in diode selection?

A: Reverse recovery time (trr) of 50 ns is consistent across all listed parts and indicates switching speed capability. This parameter is critical for high-frequency rectification applications. All substitute parts maintain this specification.

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