BSP372L6327HTSA1 Equivalent & Substitute Parts

Part Overview

The BSP372L6327HTSA1 is an N-Channel MOSFET manufactured by Infineon Technologies, rated for 100V drain-to-source voltage with 1.7A continuous drain current at 25°C. This device is housed in a PG-SOT223-4 surface mount package and is part of the SIPMOS® series. The part is classified as obsolete, making equivalent and substitute components necessary for new designs and ongoing production support. Substitute parts must maintain electrical compatibility across critical parameters including voltage rating, current capacity, on-resistance characteristics, and thermal performance while accommodating available packaging and product status options.

Key Parameters

Parameter	Value	Unit
Drain to Source Voltage (Vdss)	100	V
Continuous Drain Current (Id) @ 25°C	1.7	A
Rds On (Max) @ Id, Vgs	310	mOhm @ 1.7A, 5V
Gate Threshold Voltage (Vgs(th)) (Max)	2	V @ 1mA
Gate Source Voltage (Vgs) (Max)	±14	V
Input Capacitance (Ciss) (Max)	520	pF @ 25V
Power Dissipation (Max)	1.8	W
Operating Temperature Range	-55 to 150	°C (TJ)
Package Type	PG-SOT223-4	Surface Mount
Moisture Sensitivity Level	1	Unlimited

Substitute Part Grouping Explanation

Substitution eligibility for the BSP372L6327HTSA1 is determined by the following critical parameters:

Voltage Rating Compatibility: All substitute parts must maintain a Drain to Source Voltage (Vdss) rating of 100V or greater to ensure safe operation in the original application circuit.

Current Capacity: Substitute parts must support a continuous drain current (Id) at 25°C equal to or exceeding 1.7A to handle the original design load requirements.

On-Resistance Performance: The Rds On (Max) specification determines power dissipation and thermal behavior. Substitute parts with lower Rds On values provide improved efficiency and reduced heat generation.

Gate Threshold Voltage: Vgs(th) specifications must be compatible with the drive circuit voltage levels. Parts with threshold voltages between 1.8V and 2.5V are compatible with standard 5V logic drive circuits.

Gate Voltage Rating: Substitute parts must support gate voltage ratings of ±14V or greater to prevent gate oxide damage from transient overvoltages.

Package Compatibility: All substitute parts are specified in SOT-223 surface mount packages (PG-SOT223-4 or SOT-223-3/4 variants), maintaining mechanical and thermal interface compatibility.

Operating Temperature Range: All substitute parts maintain the -55°C to 150°C operating temperature range, ensuring thermal performance equivalence.

Moisture Sensitivity: All substitute parts are classified as MSL 1 (Unlimited), matching the original part's moisture handling requirements.

Parameter Comparison

Parameter	BSP372L6327HTSA1	BSP372NH6327XTSA1	DMN10H220LE-13	FQT7N10LTF	FQT7N10TF
Manufacturer	Infineon	Infineon	Diodes Inc.	onsemi	onsemi
Vdss (V)	100	100	100	100	100
Id @ 25°C (A)	1.7	1.8	2.3	1.7	1.7
Rds On (Max) (mOhm)	310 @ 1.7A, 5V	230 @ 1.8A, 10V	220 @ 1.6A, 10V	350 @ 850mA, 10V	350 @ 850mA, 10V
Vgs(th) (Max) (V)	2 @ 1mA	1.8 @ 218µA	2.5 @ 250µA	2 @ 250µA	4 @ 250µA
Vgs (Max) (V)	±14	±20	±20	±20	±25
Ciss (Max) (pF)	520 @ 25V	329 @ 25V	401 @ 25V	290 @ 25V	250 @ 25V
Power Dissipation (Max) (W)	1.8	1.8	1.8	2.0	2.0
Operating Temperature (°C)	-55 to 150	-55 to 150	-55 to 150	-55 to 150	-55 to 150
Package	PG-SOT223-4	PG-SOT223-4	SOT-223-3	SOT-223-4	SOT-223-4
Product Status	Obsolete	Active	Active	Active	Obsolete
RoHS Status	Not specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Primary Recommendation: BSP372NH6327XTSA1

The BSP372NH6327XTSA1 is the direct Infineon equivalent and represents the optimal substitution path. This part maintains the same manufacturer lineage (Infineon Technologies), identical voltage rating (100V), and compatible current capacity (1.8A, exceeding the 1.7A requirement). The device features improved on-resistance performance (230 mOhm vs. 310 mOhm), lower input capacitance (329 pF vs. 520 pF), and active product status with ROHS3 compliance. The PG-SOT223-4 package provides direct mechanical and thermal compatibility. This part is recommended for new designs and production transitions from the obsolete BSP372L6327HTSA1.

Secondary Recommendation: DMN10H220LE-13

The DMN10H220LE-13 from Diodes Incorporated provides superior current capacity (2.3A) and the lowest on-resistance specification (220 mOhm), delivering enhanced thermal performance and efficiency. This part maintains 100V voltage rating, active product status, and ROHS3 compliance. The SOT-223-3 package variant requires verification of pin configuration compatibility with the original SOT-223-4 layout, as the 3-pin configuration differs from the 4-pin original. This part is suitable for applications where improved thermal performance justifies package verification.

Tertiary Recommendation: FQT7N10LTF

The FQT7N10LTF from onsemi (QFET® series) matches the original 1.7A current specification and maintains 100V voltage rating with active product status and ROHS3 compliance. The SOT-223-4 package provides direct pin compatibility. On-resistance performance (350 mOhm) is higher than the original specification, resulting in increased power dissipation. This part is suitable for applications where pin-for-pin compatibility is prioritized and thermal margins are adequate.

Not Recommended: FQT7N10TF

The FQT7N10TF is classified as obsolete, eliminating its viability for new production designs. While it maintains electrical compatibility with the original part, its discontinued status contradicts the objective of transitioning away from obsolete components.

Frequently Asked Questions (FAQ)

Q: Can the BSP372NH6327XTSA1 directly replace the BSP372L6327HTSA1 without circuit modifications?

A: Yes. The BSP372NH6327XTSA1 maintains identical voltage rating (100V), exceeds current capacity (1.8A vs. 1.7A), and is housed in the same PG-SOT223-4 package. Gate threshold voltage (1.8V vs. 2V) and gate voltage rating (±20V vs. ±14V) are compatible with standard drive circuits. No circuit modifications are required.

Q: What is the significance of the lower on-resistance in substitute parts?

A: Lower on-resistance (Rds On) reduces power dissipation during conduction, decreasing heat generation and improving overall circuit efficiency. The BSP372NH6327XTSA1 (230 mOhm) and DMN10H220LE-13 (220 mOhm) dissipate less power than the original BSP372L6327HTSA1 (310 mOhm) at equivalent current levels, allowing for improved thermal performance or higher current capacity within the same power budget.

Q: Why does the DMN10H220LE-13 use a SOT-223-3 package instead of SOT-223-4?

A: The SOT-223-3 package eliminates one pin compared to the SOT-223-4 configuration. The fourth pin in the original part is typically a duplicate source connection for thermal enhancement. The SOT-223-3 variant consolidates this function into three pins. Pin configuration compatibility must be verified against the original circuit layout before substitution.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. The BSP372NH6327XTSA1, DMN10H220LE-13, and FQT7N10LTF are all specified as ROHS3 compliant. The original BSP372L6327HTSA1 does not specify RoHS status. All substitute parts meet current environmental compliance requirements for new production.

Q: What is the impact of higher input capacitance in substitute parts?

A: Input capacitance (Ciss) affects gate drive circuit requirements and switching speed. The original part specifies 520 pF, while substitutes range from 250 pF to 401 pF. Lower input capacitance reduces gate charge requirements and enables faster switching transitions. This generally improves circuit performance and reduces drive circuit power consumption.

Q: Can FQT7N10TF be used despite its obsolete status?

A: FQT7N10TF is not recommended for new designs due to its obsolete product status. While electrical parameters are compatible, using discontinued components contradicts the objective of transitioning to active, supported alternatives. Existing inventory may be used for legacy system maintenance only.

Q: What are the moisture sensitivity implications for all parts?

A: All parts, including the original and all substitutes, are classified as MSL 1 (Unlimited). This classification indicates no moisture sensitivity restrictions during storage, handling, or assembly. Standard PCB assembly processes and storage conditions are acceptable without special moisture control measures.

Q: How do gate threshold voltage differences affect circuit operation?

A: Gate threshold voltage (Vgs(th)) determines the gate voltage required to initiate conduction. The original part specifies 2V, while substitutes range from 1.8V to 4V. All values are compatible with standard 5V logic drive circuits. Lower threshold voltages (1.8V) enable operation with lower drive voltages, while higher values (4V) require higher drive voltages but provide greater noise immunity.

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