BAV19W-G3-08 Equivalent & Substitute Parts

Part Overview

The BAV19W-G3-08 is a general-purpose fast recovery rectifier diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount SOD-123 package diode is rated for 100 V DC reverse voltage and 250 mA average rectified current, with a maximum forward voltage of 1.25 V at 200 mA. The device features fast recovery characteristics with a reverse recovery time of 50 ns and is ROHS3 compliant with unlimited moisture sensitivity level (MSL 1).

The BAV19W-G3-08 is currently in active product status with 1009 pieces available in stock. Equivalent and substitute parts are identified to support design flexibility, inventory management, and supply chain continuity for applications requiring general-purpose rectification in the 100 V, 250 mA performance class.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	100	V
Current - Average Rectified (Io)	250	mA
Voltage - Forward (Vf) (Max) @ If	1.25 @ 200 mA	V
Reverse Recovery Time (trr)	50	ns
Current - Reverse Leakage @ Vr	100 nA @ 100 V	nA
Capacitance @ Vr, F	1.5 @ 0V, 1MHz	pF
Package / Case	SOD-123	—
Mounting Type	Surface Mount	—
Operating Temperature - Junction (Max)	150	°C
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the BAV19W-G3-08 are classified into two categories based on electrical and mechanical compatibility:

Parametric Equivalents maintain identical electrical specifications across all critical parameters: 100 V reverse voltage, 250 mA average rectified current, 1.25 V forward voltage at 200 mA, 50 ns reverse recovery time, SOD-123 package, and surface mount configuration. These parts are direct functional replacements with no circuit redesign required.

Manufacturer Recommended Substitutes share the same 100 V reverse voltage rating and SOD-123 package but differ in one or more of the following parameters: average rectified current (200 mA or 400 mA), forward voltage characteristics, reverse recovery time, or reverse leakage current. These substitutes are suitable for applications where the specified performance envelope permits relaxed or enhanced electrical characteristics.

The key parameters determining substitution eligibility are:

Voltage - DC Reverse (Vr) (Max): 100 V (required)
Package / Case: SOD-123 (required)
Mounting Type: Surface Mount (required)
Current - Average Rectified (Io): 200 mA minimum
Reverse Recovery Time (trr): 50 ns or faster

Parameter Comparison

Part Number	Manufacturer	Vr (Max) [V]	Io [mA]	Vf (Max) @ If [V]	trr [ns]	Ir @ Vr [nA]	Package	Status	Inventory [Pcs]
BAV19W-G3-08	Vishay	100	250	1.25 @ 200mA	50	100 @ 100V	SOD-123	Active	1009
BAV19W-E3-08	Vishay	100	250	1.25 @ 200mA	50	100 @ 100V	SOD-123	Active	16758
BAV19W-E3-18	Vishay	100	250	1.25 @ 200mA	50	100 @ 100V	SOD-123	Active	9853
BAV19W-HE3-08	Vishay	100	250	1.25 @ 200mA	50	100 @ 100V	SOD-123	Last Time Buy	14884
BAV19W-7-F	Diodes Inc.	100	400	1.25 @ 200mA	50	100 @ 100V	SOD-123	Active	8040
MMSD4148T1G	onsemi	100	200	1 @ 10mA	4	5 @ 75V	SOD-123	Active	2828400
MMSD4148T3G	onsemi	100	200	1 @ 10mA	4	5 @ 75V	SOD-123	Active	95300
MMSD4448	Fairchild	100	200	1 @ 100mA	4	5 @ 75V	SOD-123	Active	1145
MMSD914T1G	onsemi	100	200	1 @ 10mA	4	5 @ 75V	SOD-123	Active	236100
MMSD914T3G	onsemi	100	200	1 @ 10mA	4	5 @ 75V	SOD-123	Active	10400

Engineering Selection Recommendations

Parametric Equivalent Selection (Direct Replacement)

The BAV19W-E3-08 and BAV19W-E3-18 are parametric equivalents of the BAV19W-G3-08, offering identical electrical performance with higher inventory availability (16758 and 9853 pieces respectively). Both maintain active product status and ROHS3 compliance. The BAV19W-E3-08 is the preferred choice for immediate availability and supply continuity.

The BAV19W-HE3-08 is an automotive-grade equivalent (AEC-Q101 qualified) with identical electrical specifications. This part is designated as Last Time Buy, indicating discontinued production. Selection of this part is appropriate only for applications requiring automotive qualification or when existing designs mandate this specific variant.

Manufacturer Recommended Substitutes

The BAV19W-7-F (Diodes Incorporated) provides enhanced current capability at 400 mA while maintaining 100 V reverse voltage and SOD-123 package compatibility. This part is suitable for applications where the design margin permits higher current ratings. Active product status ensures long-term availability.

The MMSD4148T1G, MMSD4148T3G, MMSD914T1G, and MMSD914T3G (onsemi) are small-signal diodes rated for 200 mA average rectified current. These parts feature significantly faster reverse recovery time (4 ns versus 50 ns) and lower reverse leakage current (5 µA versus 100 nA). Selection of these parts is appropriate for applications where the 250 mA current requirement can be reduced to 200 mA and where faster switching characteristics provide circuit benefit. The MMSD4148T1G and MMSD914T1G offer the highest inventory levels (2,828,400 and 236,100 pieces respectively).

The MMSD4448 (Fairchild Semiconductor) is a 200 mA rated small-signal diode with 4 ns reverse recovery time. This part is available in bulk packaging and maintains active product status with limited inventory (1145 pieces).

Frequently Asked Questions (FAQ)

Q: Can the BAV19W-E3-08 be used as a direct replacement for the BAV19W-G3-08?

A: Yes. The BAV19W-E3-08 is a parametric equivalent with identical electrical specifications: 100 V reverse voltage, 250 mA average rectified current, 1.25 V forward voltage at 200 mA, 50 ns reverse recovery time, and SOD-123 surface mount package. No circuit modifications are required.

Q: What is the difference between the BAV19W-HE3-08 and the BAV19W-G3-08?

A: The BAV19W-HE3-08 is an automotive-grade variant (AEC-Q101 qualified) with identical electrical performance. The primary difference is product status: BAV19W-HE3-08 is designated Last Time Buy, indicating production discontinuation. Use this part only if automotive qualification is a design requirement.

Q: Can I use the BAV19W-7-F as a substitute for the BAV19W-G3-08?

A: The BAV19W-7-F is a manufacturer-recommended substitute with 100 V reverse voltage and SOD-123 package compatibility. However, it is rated for 400 mA average rectified current compared to 250 mA for the BAV19W-G3-08. This higher current rating provides design margin and is suitable for applications where the circuit design permits this specification. The part is manufactured by Diodes Incorporated and maintains active product status.

Q: Why would I select an MMSD4148 or MMSD914 instead of the BAV19W-G3-08?

A: The MMSD4148 and MMSD914 series are small-signal diodes rated for 200 mA average rectified current with significantly faster reverse recovery time (4 ns versus 50 ns) and lower reverse leakage current (5 µA versus 100 nA). These characteristics are beneficial in high-frequency switching applications where fast recovery and minimal leakage are critical. However, the 200 mA current rating is lower than the BAV19W-G3-08, so circuit current requirements must be verified. These parts offer exceptional inventory availability.

Q: Are all substitute parts available in the same packaging as the BAV19W-G3-08?

A: All substitute parts share the SOD-123 surface mount package with the BAV19W-G3-08. However, packaging format (Tape & Reel, Cut Tape, Digi-Reel, or Bulk) varies by manufacturer and part number. Verify packaging compatibility with your procurement and assembly requirements before selection.

Q: Is the BAV19W-G3-08 RoHS compliant?

A: Yes. The BAV19W-G3-08 is ROHS3 compliant. All parametric equivalents (BAV19W-E3-08, BAV19W-E3-18, BAV19W-HE3-08) and most manufacturer-recommended substitutes (BAV19W-7-F, MMSD4148T1G, MMSD4148T3G, MMSD914T1G, MMSD914T3G) are ROHS3 compliant. The MMSD4448 does not list RoHS status in the provided specifications.

Q: What is the moisture sensitivity level (MSL) for these diodes?

A: The BAV19W-G3-08 and all parametric equivalents have MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. The MMSD4148 and MMSD914 series also have MSL 1. The MMSD4448 does not list MSL in the provided specifications.

Q: Can I mix different substitute parts in the same circuit board design?

A: All substitute parts maintain the same 100 V reverse voltage rating and SOD-123 surface mount package, allowing physical interchangeability on the circuit board. However, electrical performance differences (current rating, forward voltage, reverse recovery time, reverse leakage) must be evaluated for each application. Mixing parts with different electrical characteristics in the same circuit is acceptable only if the circuit design accommodates the performance envelope of each part.

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