BAV20WS Equivalent & Substitute Parts

Part Overview

The BAV20WS is an active, general-purpose switching diode manufactured by Taiwan Semiconductor Corporation. It is specified for 200V DC reverse voltage operation with 200mA average rectified current in a surface mount SOD-323F package. This component is used in applications requiring small-signal rectification, switching, and protection circuits where compact form factor and high voltage capability are required. Substitute parts are identified to provide design flexibility, inventory alternatives, and compatibility with specific application requirements while maintaining functional equivalence within defined electrical and mechanical parameters.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	200	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 @ 150 V	nA
Capacitance @ Vr, F	5 pF @ 0V, 1MHz	pF
Package / Case	SC-90, SOD-323F	-
Operating Temperature - Junction	-65 to 150	°C
Technology	Standard	-
Speed Classification	Small Signal ≤ 200mA (Io), Any Speed	-

Substitute Part Grouping Explanation

Substitution of the BAV20WS is determined by electrical and mechanical compatibility within the following criteria:

Mandatory Matching Parameters:

Current - Average Rectified (Io): 200mA
Package / Case: SOD-323F or SC-90 equivalent
Mounting Type: Surface Mount
Speed Classification: Small Signal ≤ 200mA (Io), Any Speed
Technology: Standard

Allowable Variation Parameters:

Voltage - DC Reverse (Vr) (Max): Equal to or greater than application requirement
Voltage - Forward (Vf) (Max): Equal to or less than application requirement
Reverse Recovery Time (trr): Equal to or less than application requirement
Operating Temperature - Junction: Must encompass application operating range
Reverse Leakage Current: Equal to or less than application requirement

The substitute part BAV20WS-AU_R1_000A1 (Panjit International Inc.) meets the mandatory matching criteria. However, the maximum reverse voltage specification differs: 150V versus 200V for the main part. This substitute is suitable only for applications where the circuit reverse voltage does not exceed 150V.

Parameter Comparison

Parameter	BAV20WS (Taiwan Semiconductor)	BAV20WS-AU_R1_000A1 (Panjit International)	Match Status
Voltage - DC Reverse (Vr) (Max)	200 V	150 V	Substitute rated lower
Current - Average Rectified (Io)	200 mA	200 mA	Matched
Voltage - Forward (Vf) (Max) @ If	1.25 V @ 200 mA	1 V @ 100 mA	Substitute rated lower
Reverse Recovery Time (trr)	50 ns	50 ns	Matched
Current - Reverse Leakage @ Vr	100 nA @ 150 V	100 nA @ 150 V	Matched
Capacitance @ Vr, F	5 pF @ 0V, 1MHz	5 pF @ 0V, 1MHz	Matched
Package / Case	SC-90, SOD-323F	SC-90, SOD-323F	Matched
Operating Temperature - Junction	-65 to 150 °C	-55 to 150 °C	Substitute range narrower
Mounting Type	Surface Mount	Surface Mount	Matched
Technology	Standard	Standard	Matched
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Matched
REACH Status	REACH Unaffected	REACH Unaffected	Matched

Engineering Selection Recommendations

BAV20WS (Taiwan Semiconductor Corporation) is the primary specification. This part is active, ROHS3 compliant, and REACH unaffected. It provides 200V reverse voltage capability and is suitable for applications requiring maximum voltage headroom in the 200V class.

BAV20WS-AU_R1_000A1 (Panjit International Inc.) is a qualified substitute for applications where the following conditions are met:

Circuit reverse voltage does not exceed 150V
Operating temperature range requirement does not extend below -55°C
Forward voltage drop of 1V @ 100mA is acceptable to circuit design
Automotive-grade qualification (AEC-Q101) and MSL 1 rating are compatible with application requirements

Both parts are active products with identical current ratings, package form factors, and recovery time specifications. Selection between these parts depends on the specific voltage and temperature requirements of the target application.

Frequently Asked Questions (FAQ)

Q: Can BAV20WS-AU_R1_000A1 be used as a direct replacement for BAV20WS in all applications?

A: No. The substitute part has a maximum reverse voltage rating of 150V compared to 200V for the main part. Direct substitution is only valid for circuits where the reverse voltage does not exceed 150V. Additionally, the operating temperature range is narrower (-55°C to 150°C versus -65°C to 150°C).

Q: Are the package dimensions identical between BAV20WS and BAV20WS-AU_R1_000A1?

A: Both parts use the SOD-323F package (SC-90 case). The physical dimensions and land pattern are equivalent for surface mount PCB assembly.

Q: What is the difference in forward voltage drop between these parts?

A: The BAV20WS specifies 1.25V maximum forward voltage at 200mA, while BAV20WS-AU_R1_000A1 specifies 1V maximum at 100mA. The substitute part exhibits lower forward voltage characteristics, which may reduce power dissipation in applications operating at lower current levels.

Q: Are both parts RoHS and REACH compliant?

A: Yes. Both BAV20WS and BAV20WS-AU_R1_000A1 are ROHS3 compliant and REACH unaffected.

Q: Does the Panjit part have any additional qualifications?

A: Yes. BAV20WS-AU_R1_000A1 carries AEC-Q101 automotive qualification and MSL 1 (unlimited moisture sensitivity level) rating, making it suitable for automotive and high-reliability applications.

Q: What is the reverse recovery time for both parts?

A: Both parts have identical reverse recovery time specifications of 50 nanoseconds, ensuring equivalent switching performance in rectification and protection circuits.

Q: Can I use BAV20WS in place of BAV20WS-AU_R1_000A1?

A: Yes. The BAV20WS can be used as a substitute for BAV20WS-AU_R1_000A1 in any application where the higher voltage rating (200V) and extended temperature range (-65°C to 150°C) do not create design conflicts or cost constraints.

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