BAS19W-7-F Equivalent & Substitute Parts

Part Overview

The BAS19W-7-F is a general-purpose rectifier diode manufactured by Diodes Incorporated, rated for 100 V DC reverse voltage and 200 mA average rectified current in a surface mount SOT-323 package. This component is classified as Active product status and is RoHS3 compliant. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to component availability, supply chain considerations, or design flexibility within the allowed parameter specifications.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	100	V
Current - Average Rectified (Io)	200	mA
Voltage - Forward (Vf) (Max)	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, 1MHz
Package / Case	SC-70, SOT-323	—
Operating Temperature - Junction	-65 to 150	°C
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the BAS19W-7-F are grouped into two categories based on package type and electrical equivalence:

Category 1: SOT-323 Package Substitutes These parts maintain the same SOT-323 (SC-70) surface mount package as the main part. Substitution is valid when voltage rating (100 V minimum), current rating (175 mA or higher), and forward voltage characteristics remain within acceptable design margins. Parts in this category include BAS16W,115 and BAS16WF, both rated for 100 V and 175 mA, with identical package specifications.

Category 2: SOT-23 Package Substitutes These parts provide electrical equivalence but use an alternative surface mount package (SOT-23 or TO-236-3). Substitution requires PCB layout redesign to accommodate the different package footprint. Parts in this category include BAS19 RFG, MMBD1201, MMBD914LT3G, and SBAS16LT1G, all rated for 100 V and 200 mA with SOT-23 packaging.

Key Parameters Determining Substitution:

Voltage - DC Reverse (Vr) (Max): 100 V minimum
Current - Average Rectified (Io): 175 mA or 200 mA
Package / Case: SOT-323 or SOT-23 variants
Mounting Type: Surface Mount
RoHS Status: ROHS3 Compliant
Operating Temperature Range: -65°C to 150°C or -55°C to 150°C

Parameter Comparison

Part Number	Manufacturer	Vr (Max) [V]	Io [mA]	Vf (Max) [V]	trr [ns]	Package	Grade	Inventory [Pcs]
BAS19W-7-F	Diodes Incorporated	100	200	1.25 @ 200 mA	50	SOT-323	Standard	3330
BAS16W,115	Nexperia USA Inc.	100	175	1.25 @ 150 mA	4	SOT-323	Automotive	4400
BAS16WF	Nexperia USA Inc.	100	175	1.25 @ 150 mA	4	SOT-323	Automotive	11096
BAS19 RFG	Taiwan Semiconductor Corporation	100	200	1.25 @ 200 mA	50	SOT-23	Standard	6763
MMBD1201	onsemi	100	200	1 @ 200 mA	4	SOT-23-3	Standard	62300
MMBD914LT3G	onsemi	100	200	1 @ 10 mA	4	SOT-23-3	Standard	55400
SBAS16LT1G	onsemi	100	200	1.25 @ 150 mA	6	SOT-23-3	Automotive	71200

Engineering Selection Recommendations

For SOT-323 Package Retention: BAS16W,115 and BAS16WF are direct mechanical substitutes with identical SOT-323 packaging. Both parts are manufactured by Nexperia USA Inc. and carry Automotive grade qualification with AEC-Q101 certification. Current rating is reduced to 175 mA compared to the 200 mA specification of BAS19W-7-F; this substitution is valid only when circuit design permits operation at or below 175 mA. Reverse recovery time is significantly faster (4 ns versus 50 ns), which may improve switching performance in high-frequency applications. BAS16WF offers higher inventory availability (11096 pcs) compared to BAS16W,115 (4400 pcs).

For SOT-23 Package Conversion: BAS19 RFG, MMBD1201, MMBD914LT3G, and SBAS16LT1G provide electrical equivalence with 100 V rating and 200 mA current capacity. These substitutes require PCB layout modification to accommodate SOT-23 or TO-236-3 package footprints. BAS19 RFG maintains identical electrical characteristics (1.25 V forward voltage, 50 ns recovery time) to the main part and is manufactured by Taiwan Semiconductor Corporation. MMBD1201 and MMBD914LT3G are manufactured by onsemi with faster recovery times (4 ns) and lower forward voltage (1 V @ 200 mA for MMBD1201). SBAS16LT1G carries Automotive grade with AEC-Q101 qualification and offers the highest inventory level (71200 pcs). All SOT-23 substitutes are RoHS3 compliant with MSL 1 rating.

Compliance Considerations: All listed substitute parts maintain RoHS3 compliance, REACH unaffected status, and MSL 1 (Unlimited) moisture sensitivity rating, matching the environmental and regulatory profile of BAS19W-7-F. Operating temperature ranges are -65°C to 150°C for BAS19W-7-F, BAS19 RFG, and BAS16 series parts; MMBD914LT3G and SBAS16LT1G specify -55°C to 150°C, which is acceptable for most industrial applications.

Frequently Asked Questions (FAQ)

Q: Can BAS16W,115 or BAS16WF be used as direct replacements for BAS19W-7-F without PCB modification?

A: Yes, both BAS16W,115 and BAS16WF use identical SOT-323 (SC-70) packaging and can be soldered into existing PCB footprints without layout changes. However, the current rating is reduced from 200 mA to 175 mA. Verify that circuit design operates within 175 mA maximum to ensure safe operation.

Q: What is the primary difference between SOT-323 and SOT-23 package substitutes?

A: SOT-323 and SOT-23 are different surface mount package outlines with different footprints and pin configurations. SOT-323 substitutes (BAS16W,115, BAS16WF) fit existing BAS19W-7-F PCB layouts. SOT-23 substitutes (BAS19 RFG, MMBD1201, MMBD914LT3G, SBAS16LT1G) require PCB redesign and new footprint placement.

Q: Are automotive-grade substitutes (BAS16W,115, BAS16WF, SBAS16LT1G) interchangeable with standard-grade BAS19W-7-F?

A: Automotive-grade parts with AEC-Q101 qualification meet or exceed the electrical and reliability requirements of standard-grade parts. Automotive-grade substitutes are functionally compatible and provide enhanced qualification for applications requiring higher reliability standards. Standard-grade applications can use automotive-grade parts without restriction.

Q: What does the faster reverse recovery time (4 ns) in MMBD1201 and MMBD914LT3G mean compared to BAS19W-7-F (50 ns)?

A: Reverse recovery time (trr) is the time required for a diode to switch from forward conduction to reverse blocking. Faster recovery time reduces switching losses and improves performance in high-frequency rectification and switching applications. BAS19W-7-F with 50 ns recovery time is suitable for standard rectification; MMBD1201 and MMBD914LT3G with 4 ns recovery time are optimized for faster switching circuits.

Q: Can MMBD914LT3G be used in applications requiring 200 mA continuous current?

A: MMBD914LT3G is rated for 200 mA average rectified current and meets the current specification of BAS19W-7-F. However, forward voltage specification for MMBD914LT3G is given at 10 mA (1 V), not at 200 mA. Verify forward voltage characteristics at actual operating current in the device datasheet before final selection.

Q: Which substitute offers the best inventory availability?

A: MMBD1201 manufactured by onsemi offers the highest inventory level at 62300 pcs, followed by SBAS16LT1G at 71200 pcs. Both parts are in active production status and provide reliable supply for high-volume applications.

Q: Are all substitute parts RoHS3 compliant?

A: Yes, all listed substitute parts (BAS16W,115, BAS16WF, BAS19 RFG, MMBD1201, MMBD914LT3G, SBAS16LT1G) are RoHS3 compliant and REACH unaffected, matching the environmental compliance profile of BAS19W-7-F.

Q: What is the operating temperature range difference between BAS19W-7-F and MMBD914LT3G?

A: BAS19W-7-F operates from -65°C to 150°C junction temperature. MMBD914LT3G operates from -55°C to 150°C. The lower temperature limit of MMBD914LT3G is -55°C, which is 10°C higher than BAS19W-7-F. This difference is acceptable for most industrial and commercial applications but should be verified for extreme low-temperature environments.

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