BAV99W-QX Equivalent & Substitute Parts

Part Overview

The BAV99W-QX is a general-purpose diode array manufactured by Nexperia USA Inc., configured as a 1 pair series connection rated for 100 V DC reverse voltage and 150 mA average rectified current per diode. This component is designed for surface mount applications in the SC-70, SOT-323 package and carries automotive-grade qualification under AEC-Q101. The part is currently active in production with 820 pieces available in inventory.

Substitute parts are identified when equivalent electrical and mechanical parameters allow direct replacement without circuit redesign. Identifying alternative sources ensures supply chain continuity and supports procurement flexibility for high-volume applications.

Key Parameters

Parameter	Value
Voltage - DC Reverse (Vr) (Max)	100 V
Current - Average Rectified (Io) (per Diode)	150 mA (DC)
Voltage - Forward (Vf) (Max) @ If	1.25 V @ 150 mA
Reverse Recovery Time (trr)	4 ns
Current - Reverse Leakage @ Vr	500 nA @ 80 V
Operating Temperature - Junction	150°C
Diode Configuration	1 Pair Series Connection
Package / Case	SC-70, SOT-323
Grade	Automotive
Qualification	AEC-Q101
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the BAV99W-QX are identified based on strict equivalence across all critical electrical and mechanical parameters. The substitution logic requires matching the following parameters:

Voltage - DC Reverse (Vr) (Max): 100 V
Current - Average Rectified (Io) (per Diode): 150 mA (DC)
Voltage - Forward (Vf) (Max) @ If: 1.25 V @ 150 mA
Reverse Recovery Time (trr): 4 ns
Current - Reverse Leakage @ Vr: 500 nA @ 80 V
Operating Temperature - Junction: 150°C
Diode Configuration: 1 Pair Series Connection
Package / Case: SC-70, SOT-323
Grade: Automotive
Qualification: AEC-Q101
RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level (MSL): 1 (Unlimited)

Parts meeting all these criteria are classified as parametric equivalents and direct substitutes. No deviations in electrical performance, thermal characteristics, or compliance certifications are permitted for substitution classification.

Parameter Comparison

Parameter	BAV99W-QX	BAV99W-QF
Manufacturer	Nexperia USA Inc.	Nexperia USA Inc.
Category	Diodes, Rectifiers	Diodes, Rectifiers
Packaging	Tape & Reel (TR)	Tape & Reel (TR)
Diode Configuration	1 Pair Series Connection	1 Pair Series Connection
Technology	Standard	Standard
Voltage - DC Reverse (Vr) (Max)	100 V	100 V
Current - Average Rectified (Io) (per Diode)	150 mA (DC)	150 mA (DC)
Voltage - Forward (Vf) (Max) @ If	1.25 V @ 150 mA	1.25 V @ 150 mA
Speed	Fast Recovery =< 500ns, > 200mA (Io)	Fast Recovery =< 500ns, > 200mA (Io)
Reverse Recovery Time (trr)	4 ns	4 ns
Current - Reverse Leakage @ Vr	500 nA @ 80 V	500 nA @ 80 V
Operating Temperature - Junction	150°C	150°C
Grade	Automotive	Automotive
Qualification	AEC-Q101	AEC-Q101
Mounting Type	Surface Mount	Surface Mount
Package / Case	SC-70, SOT-323	SC-70, SOT-323
Supplier Device Package	SOT-323	SOT-323
Base Product Number	BAV99	BAV99
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected
ECCN	EAR99	EAR99
HTSUS	8541.10.0070	8541.10.0070
Product Status	Active	Active

Engineering Selection Recommendations

Both the BAV99W-QX and BAV99W-QF are active production parts manufactured by Nexperia USA Inc. with identical electrical specifications, package configurations, and compliance certifications. Both parts carry automotive-grade qualification under AEC-Q101 and are ROHS3 compliant, making them suitable for applications requiring regulatory compliance in automotive and industrial environments.

The BAV99W-QF offers significantly higher inventory availability (36,954 pieces) compared to the BAV99W-QX (820 pieces), which may influence procurement decisions for high-volume production runs or extended supply chain planning.

Selection between these parts should be based on inventory availability, lead time requirements, and supplier preference, as all electrical and mechanical parameters are equivalent.

Frequently Asked Questions (FAQ)

Q: Can BAV99W-QF be used as a direct replacement for BAV99W-QX?

A: Yes. The BAV99W-QF is a parametric equivalent with identical electrical ratings, reverse recovery time, forward voltage characteristics, and package configuration. No circuit modifications are required for substitution.

Q: Are there differences in automotive qualification between these parts?

A: No. Both parts carry identical automotive-grade qualification under AEC-Q101 and are suitable for automotive applications.

Q: Do these parts have different moisture sensitivity requirements?

A: No. Both parts have Moisture Sensitivity Level (MSL) 1, indicating unlimited shelf life without moisture control requirements.

Q: What is the difference between the BAV99W-QX and BAV99W-QF part numbers?

A: The part numbers differ only in the suffix designation (QX versus QF), which typically indicates different manufacturing batches or tape reel configurations from Nexperia USA Inc. All electrical and mechanical specifications remain identical.

Q: Are both parts RoHS compliant?

A: Yes. Both BAV99W-QX and BAV99W-QF are ROHS3 compliant and REACH unaffected, meeting environmental regulatory requirements.

Q: Can these parts be used interchangeably in PCB assembly?

A: Yes. Both parts use the SC-70, SOT-323 surface mount package with identical pin configurations, allowing direct substitution in PCB assembly processes without design changes.

Q: What is the reverse recovery time specification for these diodes?

A: Both parts have a reverse recovery time (trr) of 4 ns, classified as fast recovery diodes suitable for high-frequency switching applications.

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