BSL211SPT P-Channel MOSFET Equivalent & Substitute Parts

Part Overview

The BSL211SPT is a P-Channel MOSFET manufactured by Infineon Technologies, rated for 20V drain-to-source voltage with 4.7A continuous drain current at 25°C. The device is packaged in PG-TSOP6-6 (SOT-23-6 Thin) surface mount configuration and is designed for low-power switching applications requiring compact form factors.

The BSL211SPT carries an Obsolete product status. Equivalent and substitute parts are necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications currently utilizing this component.

Key Parameters

Parameter	Value	Unit
Drain-to-Source Voltage (Vdss)	20	V
Continuous Drain Current (Id) @ 25°C	4.7	A
On-Resistance (Rds On) @ 4.7A, 4.5V	67	mOhm
Gate Threshold Voltage (Vgs(th)) @ 25µA	1.2	V
Gate Charge (Qg) @ 4.5V	12.4	nC
Maximum Gate Voltage (Vgs)	±12	V
Input Capacitance (Ciss) @ 15V	654	pF
Power Dissipation (Max)	2	W
Operating Temperature Range	-55 to 150	°C
Mounting Type	Surface Mount
Package Type	SOT-23-6 Thin (TSOT-23-6)
FET Type	P-Channel
Technology	MOSFET (Metal Oxide)

Substitute Part Grouping Explanation

Substitute parts for the BSL211SPT are selected based on strict electrical and mechanical parameter compatibility within the P-Channel MOSFET category. The following criteria determine substitution eligibility:

Primary Electrical Parameters:

Drain-to-Source Voltage (Vdss): Must equal or exceed 20V
Continuous Drain Current (Id): Must support minimum 4.7A at 25°C
On-Resistance (Rds On): Lower or equivalent values ensure compatible switching performance
Gate Threshold Voltage (Vgs(th)): Must fall within acceptable control voltage ranges
Maximum Gate Voltage (Vgs): Must support ±12V or greater

Mechanical Parameters:

Mounting Type: Surface Mount (required)
Package Type: SOT-23-6 Thin or equivalent footprint-compatible packages
Moisture Sensitivity Level: MSL 1 (Unlimited) preferred for reliability

Compliance Parameters:

Product Status: Active status preferred for long-term availability
RoHS Compliance: ROHS3 Compliant status ensures regulatory alignment
REACH Status: REACH Unaffected designation required

All substitute parts listed maintain P-Channel MOSFET technology and operate within the -55°C to 150°C temperature range.

Parameter Comparison

Parameter	BSL211SPT (Main)	DMP2033UVT-7	FDC640P	FDC642P	PMN48XP,115	Unit
Manufacturer	Infineon Technologies	Diodes Incorporated	onsemi	onsemi	Nexperia USA Inc.
Vdss	20	20	20	20	20	V
Id @ 25°C	4.7	4.2	4.5	4.0	4.1	A
Rds On (Max) @ Vgs 4.5V	67	65	53	65	55	mOhm
Vgs(th) (Max)	1.2	0.9	1.5	1.5	1.25	V
Qg (Max) @ 4.5V	12.4	10.4	13	16	13	nC
Vgs (Max)	±12	±8	±12	±8	±12	V
Ciss (Max) @ 10-15V	654	845	890	925	1000	pF
Power Dissipation (Max)	2	1.2	1.6	1.6	0.53 (Ta) / 6.25 (Tc)	W
Operating Temperature	-55 to 150	-55 to 150	-55 to 150	-55 to 150	-55 to 150	°C
Package Type	SOT-23-6 Thin (TSOT-23-6)	SOT-23-6 Thin (TSOT-23-6)	SOT-23-6 Thin (TSOT-23-6)	SOT-23-6 Thin (TSOT-23-6)	SC-74 / SOT-457
Product Status	Obsolete	Active	Active	Active	Active
RoHS Status	Not specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Inventory Status	961 Pcs	27300 Pcs	172946 Pcs	65400 Pcs	42400 Pcs

Engineering Selection Recommendations

Primary Substitute: FDC640P (onsemi)

The FDC640P is the preferred substitute for the BSL211SPT. This device meets all electrical requirements with 20V Vdss and 4.5A continuous drain current, exceeding the BSL211SPT's 4.7A specification. The FDC640P features superior on-resistance performance at 53mOhm versus 67mOhm, resulting in lower power dissipation during switching operations. The part carries Active product status with ROHS3 compliance and maintains the same SOT-23-6 Thin package footprint. Inventory availability is substantial at 172,946 pieces, ensuring supply chain continuity.

Secondary Substitute: DMP2033UVT-7 (Diodes Incorporated)

The DMP2033UVT-7 provides an alternative with 20V Vdss and 4.2A continuous drain current. This device exhibits competitive on-resistance at 65mOhm and lower gate charge (10.4nC) compared to the main part. The DMP2033UVT-7 is packaged in TSOT-26, which maintains SOT-23-6 Thin footprint compatibility. Active product status and ROHS3 compliance support long-term design viability. Inventory availability of 27,300 pieces provides adequate supply.

Tertiary Substitute: FDC642P (onsemi)

The FDC642P operates at 20V Vdss with 4.0A continuous drain current. While the current rating is slightly lower than the main part, the on-resistance of 65mOhm and SOT-23-6 Thin package compatibility maintain functional equivalence for applications not requiring the full 4.7A specification. Active product status and ROHS3 compliance are confirmed. Inventory of 65,400 pieces ensures availability.

Alternative Substitute: PMN48XP,115 (Nexperia USA Inc.)

The PMN48XP,115 meets 20V Vdss and 4.1A continuous drain current specifications with 55mOhm on-resistance. This device is packaged in SC-74/SOT-457 (6-TSOP), which differs from the SOT-23-6 Thin footprint but maintains electrical compatibility. The part features dual power dissipation ratings (530mW at Ta, 6.25W at Tc) and Active product status with ROHS3 compliance. Inventory of 42,400 pieces supports production requirements.

Selection Criteria Summary:

For direct footprint replacement: FDC640P or DMP2033UVT-7
For superior performance characteristics: FDC640P (lowest Rds On at 53mOhm)
For maximum current headroom: FDC640P (4.5A rating)
For alternative packaging: PMN48XP,115 (requires PCB layout modification)

All recommended substitutes maintain Active product status, ensuring long-term availability and manufacturer support beyond the Obsolete BSL211SPT.

Frequently Asked Questions (FAQ)

Q1: Can the FDC640P directly replace the BSL211SPT without PCB modifications?

A: Yes. The FDC640P is packaged in SOT-23-6 Thin (TSOT-23-6), which is footprint-compatible with the BSL211SPT's PG-TSOP6-6 package. No PCB layout changes are required for direct substitution.

Q2: What is the primary advantage of selecting FDC640P over other substitutes?

A: The FDC640P provides the lowest on-resistance specification at 53mOhm compared to 67mOhm for the BSL211SPT. This results in reduced power dissipation and improved thermal performance. Additionally, the 4.5A continuous drain current rating exceeds the BSL211SPT's 4.7A specification, providing current headroom for design margin.

Q3: Does the DMP2033UVT-7 require any design considerations due to its lower gate voltage rating?

A: The DMP2033UVT-7 specifies a maximum gate voltage of ±8V compared to ±12V for the BSL211SPT. If the application drives the gate with voltages exceeding ±8V, the DMP2033UVT-7 is not suitable. Verify gate drive voltage levels in the circuit design before selection.

Q4: Is the PMN48XP,115 package change from SOT-23-6 Thin to SC-74/SOT-457 acceptable?

A: Package change requires PCB layout modification. The SC-74/SOT-457 (6-TSOP) has different pin spacing and orientation compared to SOT-23-6 Thin. Electrical compatibility is maintained, but physical board redesign is necessary. This option is suitable only when PCB revision is feasible.

Q5: What is the significance of the lower gate charge in DMP2033UVT-7?

A: Gate charge (Qg) of 10.4nC in the DMP2033UVT-7 versus 12.4nC in the BSL211SPT indicates faster switching transitions. Lower gate charge reduces gate drive power requirements and enables higher switching frequencies. This is advantageous in high-frequency applications but requires verification that the gate driver can accommodate the faster switching characteristics.

Q6: Why is FDC640P recommended as the primary substitute despite higher input capacitance?

A: The FDC640P's input capacitance (Ciss) of 890pF at 10V is higher than the BSL211SPT's 654pF at 15V. However, the superior on-resistance (53mOhm vs. 67mOhm) and higher current rating (4.5A vs. 4.7A) provide better overall performance margin. The capacitance difference is acceptable in most switching applications and does not preclude substitution.

Q7: Are all substitute parts RoHS3 compliant?

A: Yes. All recommended substitute parts (DMP2033UVT-7, FDC640P, FDC642P, and PMN48XP,115) carry ROHS3 Compliant certification. The BSL211SPT's RoHS status is not specified in the provided data. Substitution with any recommended part ensures regulatory compliance for new designs.

Q8: What inventory considerations should guide part selection?

A: FDC640P offers the highest inventory availability at 172,946 pieces, followed by FDC642P at 65,400 pieces. DMP2033UVT-7 has 27,300 pieces available. All quantities support production requirements. Selection should prioritize FDC640P for maximum supply chain security and lead time assurance.

Q9: Can multiple substitute parts be used interchangeably within a single design?

A: No. Once a substitute part is selected and validated for a specific application, that part should be used consistently throughout production. Mixing substitute parts introduces variability in electrical characteristics (particularly on-resistance and gate charge) that may affect circuit performance. Design validation must be performed for each selected substitute part.

Q10: What is the impact of the BSL211SPT's Obsolete status on design decisions?

A: Obsolete status indicates that Infineon Technologies no longer manufactures or supports the BSL211SPT. Existing inventory (961 pieces) will eventually deplete. For new designs or production continuation, immediate transition to an Active substitute part is required. FDC640P, DMP2033UVT-7, FDC642P, and PMN48XP,115 all carry Active status, ensuring long-term availability and manufacturer technical support.

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