BAS16WH6433XTMA1 Equivalent & Substitute Parts

Part Overview

The BAS16WH6433XTMA1 is a general-purpose rectifier diode manufactured by Infineon Technologies, rated for 80 V DC reverse voltage and 250 mA average rectified current in a surface mount SOT-323 package. This component is classified as Last Time Buy, indicating discontinued production. Identification of equivalent and substitute parts is necessary to ensure design continuity and procurement availability for new production runs and legacy system maintenance.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) Maximum	80	V
Current - Average Rectified (Io)	250	mA
Voltage - Forward (Vf) Maximum @ If	1.25 @ 150	V @ mA
Speed Classification	Fast Recovery ≤ 500ns, > 200mA	—
Reverse Recovery Time (trr)	4	ns
Current - Reverse Leakage @ Vr	1 @ 75	µA @ V
Capacitance @ Vr, F	2 @ 0, 1MHz	pF @ V, MHz
Package / Case	SC-70, SOT-323	—
Operating Temperature - Junction Maximum	150	°C
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the BAS16WH6433XTMA1 is determined by the following electrical and mechanical parameters:

Primary Substitution Criteria:

Voltage - DC Reverse (Vr) rating must equal or exceed 80 V
Current - Average Rectified (Io) must equal or exceed 250 mA
Voltage - Forward (Vf) at 150 mA must not exceed 1.25 V
Reverse Recovery Time (trr) must be 4 ns or faster
Package must be SOT-323 or compatible surface mount form factor
RoHS3 compliance required

Substitute parts are grouped into three categories:

Parametric Equivalents - Identical electrical specifications and SOT-323 packaging
Direct Substitutes - Meet or exceed all electrical parameters with compatible packaging; may have different speed classifications or slightly different reverse leakage characteristics
Functional Alternatives - Meet core voltage and current requirements but with package variations or modified electrical characteristics

Parameter Comparison

Part Number	Manufacturer	Vr (Max) V	Io mA	Vf (Max) @ 150mA V	trr ns	Package	Status
BAS16WH6433XTMA1	Infineon	80	250	1.25	4	SOT-323	Last Time Buy
BAS16WH6327XTSA1	Infineon	80	250	1.25	4	SOT-323	Last Time Buy
BAS16WT1G	onsemi	100	200	1.25	6	SOT-323	Active
SBAS16WT1G	onsemi	75	200	1.25	6	SOT-323	Active
BAS116LT1G	onsemi	75	200	1.25	3000	SOT-23-3	Active
BAS16W,115	Nexperia	100	175	1.25	4	SOT-323	Active
BAS16W-7-F	Diodes Inc.	75	150	1.25	4	SOT-323	Active
MMBD4448HTC-7-F	Diodes Inc.	80	250	1.25	4	SOT-523	Active
MMBD4448HW-7-F	Diodes Inc.	80	250	1.25	4	SOT-23-3	Active
MMBD4448W-7-F	Diodes Inc.	75	250	1.25	4	SOT-23-3	Active

Engineering Selection Recommendations

For Direct Replacement (Same Electrical Performance):

BAS16WH6327XTSA1 (Infineon) is the parametric equivalent with identical 80 V, 250 mA, 4 ns specifications and SOT-323 packaging. This part maintains Last Time Buy status but offers higher inventory availability (904 pcs vs. 730 pcs).

For Active Production Designs (Recommended):

MMBD4448HTC-7-F (Diodes Incorporated) meets all electrical specifications (80 V, 250 mA, 4 ns trr) with Active product status and highest inventory (125,200 pcs). Package is SOT-523, requiring PCB layout modification. This part is suitable for new designs requiring long-term supply assurance.

MMBD4448HW-7-F (Diodes Incorporated) provides identical electrical performance in SOT-23-3 package with Active status and 4,300 pcs inventory. Package change from SOT-323 requires PCB redesign.

For Voltage-Reduced Applications (≤75 V):

BAS16W-7-F (Diodes Incorporated) operates at 75 V maximum with 150 mA current rating, 4 ns recovery time, and Active status. Highest inventory availability (134,300 pcs) supports high-volume production. Suitable only for designs with maximum operating voltage of 75 V or lower.

For Automotive Applications:

BAS16W,115 (Nexperia) carries AEC-Q101 qualification and Automotive grade designation. Rated 100 V, 175 mA with 4 ns recovery time in SOT-323 package. Active status with 4,400 pcs inventory. Suitable for automotive and mission-critical applications requiring qualification documentation.

For Package-Constrained Designs:

BAS116LT1G (onsemi) provides SOT-23-3 (TO-236) package alternative with 75 V, 200 mA rating and Active status. Reverse recovery time is 3 µs (slower than original 4 ns). Suitable only for applications where package footprint is critical and speed performance is not limiting.

Frequently Asked Questions (FAQ)

Q: Can BAS16WT1G replace BAS16WH6433XTMA1 directly?

A: BAS16WT1G meets the forward voltage and reverse recovery time specifications but has reduced current rating (200 mA vs. 250 mA) and increased reverse recovery time (6 ns vs. 4 ns). It is suitable only for applications requiring maximum 200 mA current. Voltage rating is higher (100 V vs. 80 V), providing additional margin.

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

A: Both are three-terminal surface mount packages but have different footprints and pin spacing. SOT-323 (SC-70) has smaller dimensions than SOT-23-3 (SC-59, TO-236). Substitution requires PCB layout modification and cannot be performed without design review.

Q: Why does MMBD4448HTC-7-F use SOT-523 package instead of SOT-323?

A: MMBD4448HTC-7-F is a diode array (1 Pair Common Cathode configuration) in SOT-523 package, which accommodates multiple diodes. Single diode versions (MMBD4448HW-7-F) are available in SOT-23-3. Package selection depends on circuit topology requirements.

Q: Is BAS116LT1G suitable for high-speed switching applications?

A: BAS116LT1G has reverse recovery time of 3 µs, classified as Small Signal speed. The original BAS16WH6433XTMA1 has 4 ns recovery time (Fast Recovery classification). BAS116LT1G is not suitable for applications requiring fast switching performance below 1 MHz.

Q: Can I use BAS16W-7-F in a design rated for 80 V operation?

A: BAS16W-7-F is rated for maximum 75 V reverse voltage. Use in 80 V applications exceeds the component rating and violates design safety margins. This substitution is not permitted.

Q: What does Last Time Buy status mean for BAS16WH6433XTMA1?

A: Last Time Buy indicates the manufacturer has discontinued production. Existing inventory (730 pcs) represents the final available stock. For new designs or production beyond current inventory, selection of Active status parts (MMBD4448HTC-7-F, BAS16W-7-F, BAS16WT1G) is required.

Q: Are all substitute parts RoHS3 compliant?

A: All parts listed in this document carry RoHS3 Compliant status. Compliance is maintained across all substitution options.

Q: What is the impact of different reverse leakage current specifications?

A: Reverse leakage current ranges from 1 nA to 100 nA across substitute parts. For most general-purpose rectifier applications, this variation is not significant. High-impedance analog circuits or precision measurement applications may require evaluation of specific leakage characteristics.

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