BAV19W-G Equivalent & Substitute Parts (Diodes, Rectifiers)

Part Overview

The BAV19W-G, manufactured by Taiwan Semiconductor Corporation, is a surface-mount switching diode in the SOD-123 package. It features a maximum reverse voltage of 100 V, an average rectified current of 200 mA, low forward voltage, fast reverse recovery, low leakage current, and low capacitance. The product is ROHS3 compliant and REACH unaffected.
Finding alternative models such as the BAV19W (Good-Ark Semiconductor) is necessary for maintaining supply chain security, ensuring form-fit-function compatibility, or accommodating procurement requirements when stock levels or approved manufacturers restrict availability.

Key Parameters

Parameter	BAV19W-G
Manufacturer	Taiwan Semiconductor Corporation
Category	Diodes, Rectifiers
Package / Case	SOD-123
Mounting Type	Surface Mount
Voltage - DC Reverse (Vr) (Max)	100 V
Current - Average Rectified (Io)	200 mA
Voltage - Forward (Vf) (Max) @ If	1.25 V @ 200 mA
Reverse Recovery Time (trr)	50 ns
Current - Reverse Leakage @ Vr	100 nA @ 100 V
Capacitance @ Vr, F	5 pF @ 0V, 1 MHz
Operating Temperature - Junction	-65°C ~ 150°C
RoHS Status	ROHS3 Compliant
REACH Status	REACH Unaffected
Part Status	Active

Substitute Part Grouping Explanation

Substitution is based exclusively on identical or stricter key parameters required for a diode in the rectifiers category. Substitutability is determined strictly by the following common parameters:

Package / case (SOD-123)
Mounting type (Surface Mount)
Maximum reverse voltage (≥100 V)
Average rectified current (≥200 mA)
Maximum forward voltage at rated current (≤1.25 V @ 200 mA)
Reverse recovery time (≤50 ns)
Reverse leakage current at reverse voltage (≤100 nA @ 100 V)
Capacitance at defined voltage and frequency (5 pF @ 0V, 1 MHz)
Operating junction temperature range (−65°C to +150°C)
Compliance certifications (ROHS3, REACH)

Parameter Comparison

Parameter	BAV19W-G (Taiwan Semiconductor Corporation)	BAV19W (Good-Ark Semiconductor)
Category	Diodes, Rectifiers	Diodes, Rectifiers
Package / Case	SOD-123	SOD-123
Mounting Type	Surface Mount	Surface Mount
Voltage - DC Reverse (Vr) (Max)	100 V	120 V
Current - Average Rectified (Io)	200 mA	200 mA
Voltage - Forward (Vf) (Max) @ If	1.25 V @ 200 mA	1.25 V @ 200 mA
Reverse Recovery Time (trr)	50 ns	50 ns
Current - Reverse Leakage @ Vr	100 nA @ 100 V	100 nA @ 100 V
Capacitance @ Vr, F	5 pF @ 0V, 1 MHz	5 pF @ 0V, 1 MHz
Operating Temperature - Junction	-65°C ~ 150°C	-65°C ~ 150°C
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected
Part Status	Active	Active

Engineering Selection Recommendations

Both BAV19W-G and its substitute BAV19W are classified as active products and possess ROHS3 compliance and REACH unaffected status. Their packages, key electrical ratings, and temperature capabilities are aligned. Selection can proceed based on these characteristics and product availability.

Frequently Asked Questions (FAQ)

Q1: What parameters are critical for substituting BAV19W-G?
A: The critical parameters are package/case (SOD-123), mounting type (surface mount), maximum reverse voltage, average rectified current, forward voltage drop, reverse recovery time, reverse leakage current, capacitance, operating temperature range, and compliance certifications.

Q2: Is the BAV19W-G substitute BAV19W pin-compatible?
A: Yes, both parts are in SOD-123 packages using the same surface-mount configuration.

Q3: Does the voltage rating difference affect substitutability?
A: The BAV19W offers a higher maximum reverse voltage (120 V) compared to BAV19W-G (100 V), which meets or exceeds requirements for substitution.

Q4: Are both diodes compliant with environmental certifications?
A: Yes, both are ROHS3 compliant and REACH unaffected.

Q5: Can BAV19W be used in existing PCB layouts designed for BAV19W-G?
A: Yes, both products share the SOD-123 package and mounting type, allowing direct substitution in PCB layouts.

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