BAS19W-7 Equivalent & Substitute Parts

Part Overview

The BAS19W-7 is a general-purpose rectifier diode manufactured by Diodes Incorporated, rated for 100V DC reverse voltage and 200mA average rectified current in a SOT-323 surface mount package. This component is classified as Active product status and is ROHS3 compliant with unlimited moisture sensitivity level (MSL 1). Equivalent and substitute parts are identified based on matching electrical performance parameters and compatible package configurations to support design flexibility and supply chain continuity.

Key Parameters

Parameter	Value
Voltage - DC Reverse (Vr) (Max)	100 V
Current - Average Rectified (Io)	200 mA
Mounting Type	Surface Mount
Package / Case	SC-70, SOT-323
Operating Temperature - Junction	-65°C ~ 150°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the BAS19W-7 are grouped based on electrical parameter compatibility and package type. The primary substitution criteria are:

Electrical Parameters:

Voltage - DC Reverse (Vr) (Max): 100 V minimum
Current - Average Rectified (Io): 200 mA or greater
Forward voltage characteristics within acceptable operating range
Reverse recovery time and leakage current performance

Package Compatibility:

SOT-323 (SC-70) package for direct pin-compatible substitution
SOT-23-3 (TO-236) package for alternative surface mount configurations

Compliance Requirements:

ROHS3 compliance
MSL 1 rating
Active product status

Substitutes are divided into two categories: direct equivalents sharing identical SOT-323 packaging, and compatible alternatives using SOT-23-3 packaging with equivalent electrical performance.

Parameter Comparison

Part Number	Manufacturer	Vr (Max)	Io	Vf (Max)	Package	Trr	Operating Temp	Product Status
BAS19W-7	Diodes Incorporated	100 V	200 mA	Not specified	SOT-323	Not specified	-65°C ~ 150°C	Active
BAS19W-7-F	Diodes Incorporated	100 V	200 mA	1.25 V @ 200 mA	SOT-323	50 ns	-65°C ~ 150°C	Active
BAS19 RFG	Taiwan Semiconductor Corporation	100 V	200 mA	1.25 V @ 200 mA	SOT-23	50 ns	-65°C ~ 150°C	Active
MMBD1201	onsemi	100 V	200 mA	1 V @ 200 mA	SOT-23-3	4 ns	150°C (Max)	Active
MMBD914LT3G	onsemi	100 V	200 mA	1 V @ 10 mA	SOT-23-3	4 ns	-55°C ~ 150°C	Active
SBAS16LT1G	onsemi	100 V	200 mA	1.25 V @ 150 mA	SOT-23-3	6 ns	-55°C ~ 150°C	Active
BAS16W,115	Nexperia USA Inc.	100 V	175 mA	1.25 V @ 150 mA	SOT-323	4 ns	-65°C ~ 150°C	Active
BAS16WF	Nexperia USA Inc.	100 V	175 mA	1.25 V @ 150 mA	SOT-323	4 ns	150°C (Max)	Active

Engineering Selection Recommendations

Direct Package Equivalents (SOT-323):

BAS19W-7-F is the direct equivalent from Diodes Incorporated, sharing identical SOT-323 packaging and electrical specifications. This part is recommended for applications requiring pin-for-pin compatibility without PCB layout modifications.

BAS16W,115 and BAS16WF from Nexperia USA Inc. are SOT-323 package alternatives with 175mA current rating. These parts are suitable for applications where the 200mA specification of the BAS19W-7 exceeds design requirements. Both parts carry AEC-Q101 automotive qualification.

Alternative Package Options (SOT-23-3):

MMBD1201 and MMBD914LT3G from onsemi provide SOT-23-3 package alternatives with equivalent 100V/200mA electrical performance. These parts require PCB layout modification due to different pin configuration but offer improved reverse recovery time (4 ns). MMBD914LT3G extends the lower operating temperature to -55°C.

SBAS16LT1G from onsemi offers SOT-23-3 packaging with AEC-Q101 automotive qualification and extended temperature range (-55°C ~ 150°C).

BAS19 RFG from Taiwan Semiconductor Corporation provides SOT-23 package configuration with matching electrical specifications and extended temperature range.

All substitute parts maintain ROHS3 compliance and MSL 1 rating consistent with the BAS19W-7.

Frequently Asked Questions (FAQ)

Q: Can BAS19W-7 be replaced with BAS16W,115 or BAS16WF?

A: Yes. Both BAS16W,115 and BAS16WF are compatible substitutes in SOT-323 packaging. The primary difference is reduced current rating (175mA vs. 200mA). These parts are suitable for applications where the full 200mA specification is not required. Both maintain 100V reverse voltage rating and identical package footprint.

Q: What is the difference between SOT-323 and SOT-23-3 packages?

A: SOT-323 (SC-70) and SOT-23-3 (TO-236) are both three-terminal surface mount packages but have different physical dimensions and pin layouts. SOT-323 is smaller and more compact. Direct substitution between these packages requires PCB layout modification. Pin-to-pin compatibility is not guaranteed without design verification.

Q: Are MMBD914LT3G and MMBD1201 interchangeable with BAS19W-7?

A: Both parts meet the 100V/200mA electrical requirements and are ROHS3 compliant. However, they use SOT-23-3 packaging instead of SOT-323, requiring PCB layout changes. MMBD914LT3G offers faster reverse recovery time (4 ns) and extended lower temperature range (-55°C). MMBD1201 specifies maximum junction temperature of 150°C only.

Q: Does BAS19 RFG from Taiwan Semiconductor Corporation provide equivalent performance?

A: Yes. BAS19 RFG matches the 100V/200mA electrical specifications and maintains ROHS3 compliance and MSL 1 rating. It uses SOT-23 packaging, requiring PCB layout modification. Operating temperature range extends to -65°C ~ 150°C, matching the BAS19W-7.

Q: Which substitute parts carry automotive qualification?

A: SBAS16LT1G, BAS16W,115, and BAS16WF carry AEC-Q101 automotive qualification. These parts are suitable for automotive applications requiring formal qualification documentation.

Q: What is the impact of different reverse recovery times on substitution?

A: Reverse recovery time (trr) affects switching speed and noise characteristics. BAS19W-7-F and BAS19 RFG specify 50 ns trr. MMBD914LT3G, MMBD1201, and BAS16W,115 specify 4 ns trr, providing faster switching. SBAS16LT1G specifies 6 ns trr. Faster recovery times reduce switching losses but may increase EMI in certain circuit topologies. Application-specific circuit analysis determines acceptability.

Q: Are all substitute parts available in equivalent packaging options?

A: No. BAS19W-7-F, BAS16W,115, and BAS16WF maintain SOT-323 packaging for direct footprint compatibility. MMBD914LT3G, MMBD1201, and SBAS16LT1G use SOT-23-3 packaging. BAS19 RFG uses SOT-23 packaging. Package selection depends on PCB design constraints and layout flexibility.

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