MMBD4448HTW-TP Equivalent & Substitute Parts

Part Overview

The MMBD4448HTW-TP is a diode array featuring three independent general-purpose rectifier diodes rated for 80 V DC reverse voltage and 250 mA average rectified current per diode. This component is manufactured by Micro Commercial Co and is housed in a 6-TSSOP (SOT-363) surface mount package. The device is classified as Active product status and is RoHS3 compliant with unlimited moisture sensitivity level (MSL 1).

Substitute parts are identified when equivalent or parametrically similar diode arrays become necessary due to inventory constraints, supply chain considerations, or design flexibility requirements while maintaining functional compatibility within specified electrical and mechanical parameters.

Key Parameters

Parameter	Value	Unit
Diode Configuration	3 Independent	—
Voltage - DC Reverse (Vr) (Max)	80	V
Current - Average Rectified (Io) per Diode	250	mA
Voltage - Forward (Vf) (Max) @ If	1.25 V @ 150 mA	—
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Reverse Recovery Time (trr)	4	ns
Current - Reverse Leakage @ Vr	100 nA @ 70 V	—
Operating Temperature - Junction (Max)	150	°C
Mounting Type	Surface Mount	—
Package / Case	6-TSSOP, SC-88, SOT-363	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the MMBD4448HTW-TP are classified based on strict adherence to the following electrical and mechanical parameters:

Parametric Equivalents maintain identical or superior electrical specifications across all critical parameters: DC reverse voltage rating (80 V), average rectified current per diode (250 mA), forward voltage characteristics (1.25 V @ 150 mA), fast recovery speed classification (≤ 500ns, > 200mA), reverse recovery time (4 ns), and reverse leakage current (100 nA @ 70 V). These parts are interchangeable without circuit redesign.

Similar Substitutes share the same diode configuration (3 independent), package type (6-TSSOP, SOT-363), and mounting method (surface mount), but operate within reduced electrical ratings. These parts are suitable for applications where the lower voltage or current specifications are acceptable within the circuit design envelope.

All substitute candidates must maintain:

Identical package and pinout (6-TSSOP, SC-88, SOT-363)
Surface mount technology compatibility
RoHS3 compliance and MSL 1 rating
Active product status

Parameter Comparison

Parameter	MMBD4448HTW-TP (Micro Commercial Co)	MMBD4448HTW-7-F (Diodes Incorporated)	MMBD4448TW_R1_00001 (Panjit International Inc.)
Manufacturer	Micro Commercial Co	Diodes Incorporated	Panjit International Inc.
Diode Configuration	3 Independent	3 Independent	3 Independent
Voltage - DC Reverse (Vr) (Max)	80 V	80 V	75 V
Current - Average Rectified (Io) per Diode	250 mA	250 mA	150 mA
Voltage - Forward (Vf) (Max) @ If	1.25 V @ 150 mA	1.25 V @ 150 mA	1 V @ 100 mA
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Small Signal ≤ 200mA (Io), Any Speed
Reverse Recovery Time (trr)	4 ns	4 ns	4 ns
Current - Reverse Leakage @ Vr	100 nA @ 70 V	100 nA @ 70 V	2.5 µA @ 75 V
Operating Temperature - Junction	150°C (Max)	−65°C ~ 150°C	−55°C ~ 150°C
Package / Case	6-TSSOP, SC-88, SOT-363	6-TSSOP, SC-88, SOT-363	6-TSSOP, SC-88, SOT-363
Mounting Type	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active	Active

Engineering Selection Recommendations

MMBD4448HTW-7-F (Diodes Incorporated) is a parametric equivalent suitable for direct substitution in applications requiring the full electrical specifications of the MMBD4448HTW-TP. This part maintains identical voltage ratings (80 V), current ratings (250 mA per diode), forward voltage characteristics (1.25 V @ 150 mA), and fast recovery speed classification (≤ 500ns, > 200mA). The extended operating temperature range (−65°C ~ 150°C) provides additional thermal margin compared to the main part. Both parts are RoHS3 compliant, MSL 1 rated, and housed in the identical 6-TSSOP, SOT-363 package. This substitute is recommended for applications where supply continuity or inventory management requires an alternative source while maintaining full electrical compatibility.

MMBD4448TW_R1_00001 (Panjit International Inc.) is a similar substitute with reduced electrical specifications. This part operates at 75 V maximum DC reverse voltage (5 V lower than the main part) and 150 mA average rectified current per diode (100 mA lower than the main part). The forward voltage is lower at 1 V @ 100 mA, and the speed classification is small signal (≤ 200mA, any speed) rather than fast recovery. The reverse leakage current is higher at 2.5 µA @ 75 V compared to 100 nA @ 70 V for the main part. This substitute is suitable only for applications where the circuit design envelope accommodates the reduced voltage and current ratings. The identical package (6-TSSOP, SOT-363), RoHS3 compliance, and MSL 1 rating ensure mechanical and environmental compatibility.

All three parts maintain Active product status and are suitable for new design implementations and production environments requiring RoHS3 compliance.

Frequently Asked Questions (FAQ)

Q: Can MMBD4448HTW-7-F be used as a direct replacement for MMBD4448HTW-TP?

A: Yes. The MMBD4448HTW-7-F is a parametric equivalent with identical electrical specifications: 80 V DC reverse voltage, 250 mA average rectified current per diode, 1.25 V forward voltage @ 150 mA, and fast recovery speed classification (≤ 500ns, > 200mA). Both parts use the 6-TSSOP, SOT-363 package with identical pinout. No circuit modifications are required.

Q: Can MMBD4448TW_R1_00001 replace MMBD4448HTW-TP in all applications?

A: No. The MMBD4448TW_R1_00001 has reduced electrical ratings: 75 V maximum DC reverse voltage (versus 80 V) and 150 mA average rectified current per diode (versus 250 mA). This substitute is suitable only for applications where the circuit design operates within these lower specifications. The speed classification differs (small signal versus fast recovery), which may affect switching performance in high-frequency applications.

Q: Are all three parts mechanically compatible?

A: Yes. All three parts use the 6-TSSOP, SC-88, SOT-363 surface mount package with identical pinout and footprint. They are interchangeable from a mechanical and PCB assembly perspective.

Q: What are the compliance differences between these parts?

A: All three parts are RoHS3 compliant, MSL 1 rated (unlimited moisture sensitivity), and REACH unaffected. Compliance status is identical across all substitutes.

Q: Which substitute should be selected for a new design?

A: For new designs requiring the full 80 V / 250 mA specifications, either MMBD4448HTW-TP or MMBD4448HTW-7-F is appropriate. The MMBD4448HTW-7-F offers an extended operating temperature range (−65°C ~ 150°C). For applications with reduced voltage or current requirements, MMBD4448TW_R1_00001 is suitable if the circuit design envelope accommodates 75 V and 150 mA ratings.

Q: What is the difference in reverse recovery time between these parts?

A: All three parts have identical reverse recovery time (trr) of 4 ns. This parameter does not differentiate the substitutes.

Q: How do the reverse leakage currents compare?

A: The MMBD4448HTW-TP and MMBD4448HTW-7-F both specify 100 nA @ 70 V reverse leakage current. The MMBD4448TW_R1_00001 specifies 2.5 µA @ 75 V, which is significantly higher. This difference may be relevant in low-leakage or precision analog applications.

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