BSL307SPT P-Channel MOSFET 30V 5.5A Equivalent & Substitute Parts

Part Overview

The BSL307SPT is a P-Channel Metal Oxide Semiconductor Field Effect Transistor (MOSFET) manufactured by Infineon Technologies, rated for 30V drain-to-source voltage with 5.5A continuous drain current at 25°C. This device is packaged in a PG-TSOP6-6 (SOT-23-6 Thin) surface mount configuration and is part of the OptiMOS™ series. The BSL307SPT is currently discontinued at DiGi Electronics, making equivalent substitute parts necessary for ongoing design support and production requirements. Substitute devices must maintain electrical compatibility across voltage ratings, current handling, gate charge characteristics, and thermal performance while accommodating available packaging options.

Key Parameters

Parameter	Value	Unit
FET Type	P-Channel	—
Drain-to-Source Voltage (Vdss)	30	V
Continuous Drain Current (Id) @ 25°C	5.5	A
On-State Resistance (Rds On) @ 5.5A, 10V	43	mOhm
Gate Threshold Voltage (Vgs(th)) @ 40µA	2	V
Gate Charge (Qg) @ 10V	29	nC
Input Capacitance (Ciss) @ 25V	805	pF
Maximum Gate-Source Voltage (Vgs)	±20	V
Power Dissipation (Max)	2	W
Operating Temperature Range	-55 to 150	°C
Package Type	SOT-23-6 Thin (TSOT-23-6)	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution eligibility for the BSL307SPT is determined by the following critical parameters:

Voltage Rating Compatibility: All substitute parts must maintain a Vdss rating of 30V or greater to ensure safe operation in circuits designed for the BSL307SPT.

Current Handling: Substitute devices must support continuous drain current (Id) at or above 5.5A at 25°C ambient temperature. Devices rated below this threshold cannot reliably replace the BSL307SPT in applications requiring full current capacity.

On-State Resistance (Rds On): The maximum Rds On specification at the rated gate voltage (10V) must not exceed 50mOhm to maintain acceptable power dissipation and thermal performance. The BSL307SPT specifies 43mOhm at 5.5A and 10V.

Gate Charge (Qg): Gate charge must remain within acceptable switching speed parameters. The BSL307SPT specifies 29nC at 10V; substitute parts with significantly higher gate charge may impact circuit switching frequency and efficiency.

Package Compatibility: All substitute parts must be surface mount devices in SOT-23-6 or equivalent thin-profile packages to ensure mechanical and electrical compatibility with existing PCB layouts.

Thermal Performance: Power dissipation rating must support the thermal requirements of the application. The BSL307SPT is rated at 2W (Ta).

Compliance: All substitute parts must maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating to meet manufacturing and environmental standards.

Parameter Comparison

Parameter	BSL307SPT (Infineon)	CPH6350-TL-W (onsemi)	DMP3050LVT-7 (Diodes Inc.)	FDC658P (onsemi)
Manufacturer	Infineon Technologies	onsemi	Diodes Incorporated	onsemi
FET Type	P-Channel	P-Channel	P-Channel	P-Channel
Vdss (V)	30	30	30	30
Id @ 25°C (A)	5.5	6	4.5	4
Rds On (Max) @ 10V (mOhm)	43 @ 5.5A	43 @ 3A	50 @ 4.5A	50 @ 4A
Vgs(th) (Max) (V)	2 @ 40µA	Not specified	2 @ 250µA	3 @ 250µA
Qg @ 10V (nC)	29	13	10.5	12 @ 5V
Ciss (Max) (pF)	805 @ 25V	600 @ 10V	620 @ 15V	750 @ 15V
Vgs (Max) (V)	±20	±20	±25	±20
Power Dissipation (Max) (W)	2	1.6	1.8	1.6
Operating Temperature (°C)	-55 to 150	to 150	-55 to 150	-55 to 150
Package	SOT-23-6 Thin (TSOT-23-6)	SOT-23-6	SOT-23-6 Thin (TSOT-23-6)	SOT-23-6 Thin (TSOT-23-6)
Product Status	Discontinued	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

CPH6350-TL-W (onsemi): This device is the primary recommended substitute. It exceeds the BSL307SPT current rating at 6A continuous drain current and maintains identical 30V Vdss and 43mOhm Rds On specifications at comparable gate voltages. The CPH6350-TL-W features lower gate charge (13nC) and reduced input capacitance (600pF), resulting in improved switching performance. Product status is Active with full manufacturing support. RoHS3 compliance and MSL 1 rating match the original specification. Available inventory is 17,645 pieces. Packaging is 6-CPH (SOT-23-6 compatible).

DMP3050LVT-7 (Diodes Incorporated): This substitute is suitable for applications where the 4.5A continuous drain current rating is sufficient. The device maintains 30V Vdss and 50mOhm Rds On at 4.5A and 10V, representing a 7mOhm increase compared to the BSL307SPT. Gate charge is significantly lower at 10.5nC, supporting faster switching operation. The DMP3050LVT-7 supports extended gate voltage range (±25V) and maintains full temperature range operation (-55°C to 150°C). Product status is Active. RoHS3 compliance and MSL 1 rating are confirmed. Available inventory is 155,400 pieces. Package is TSOT-26 (SOT-23-6 Thin compatible).

FDC658P (onsemi): This substitute is applicable for designs where continuous drain current requirements are 4A or lower. The device maintains 30V Vdss and 50mOhm Rds On at 4A and 10V. Gate charge is 12nC at 5V, supporting efficient switching. The FDC658P is part of the PowerTrench® series and features the SuperSOT™-6 package (SOT-23-6 Thin compatible). Product status is Active with full manufacturing support. RoHS3 compliance and MSL 1 rating are confirmed. Available inventory is 17,300 pieces. Operating temperature range is -55°C to 150°C.

Selection Criteria: Choose CPH6350-TL-W for applications requiring maximum current capacity and improved switching characteristics. Select DMP3050LVT-7 for designs with 4.5A current requirements and extended gate voltage tolerance. Use FDC658P only when continuous drain current does not exceed 4A. All three substitutes are Active products with established supply chains and full compliance certifications.

Frequently Asked Questions (FAQ)

Q: Can the CPH6350-TL-W directly replace the BSL307SPT in all applications?

A: The CPH6350-TL-W is electrically compatible with the BSL307SPT for applications requiring up to 5.5A continuous drain current. The device exceeds the original specification at 6A rating and maintains identical voltage and resistance characteristics. Mechanical compatibility is confirmed through SOT-23-6 package equivalence. Verify gate drive voltage compatibility (both support ±20V Vgs maximum) and thermal management capacity before implementation.

Q: What is the impact of lower gate charge in substitute devices?

A: Lower gate charge (Qg) in the CPH6350-TL-W (13nC) and DMP3050LVT-7 (10.5nC) compared to the BSL307SPT (29nC) results in faster switching transitions and reduced gate drive power requirements. This improves overall circuit efficiency and allows operation at higher switching frequencies. Gate drive circuits designed for the BSL307SPT will function correctly with these substitutes; no circuit modifications are required.

Q: Are package dimensions identical between BSL307SPT and substitute parts?

A: All substitute parts are packaged in SOT-23-6 or TSOT-23-6 (thin) configurations, which are mechanically and electrically compatible. The BSL307SPT uses PG-TSOP6-6 (SOT-23-6 Thin). The CPH6350-TL-W uses 6-CPH (SOT-23-6), the DMP3050LVT-7 uses TSOT-26 (SOT-23-6 Thin), and the FDC658P uses SuperSOT™-6 (SOT-23-6 Thin). All devices are surface mount with identical pin configurations and PCB footprints.

Q: What is the significance of the DMP3050LVT-7 supporting ±25V Vgs maximum?

A: The DMP3050LVT-7 supports ±25V maximum gate-source voltage compared to ±20V for the BSL307SPT and other substitutes. This extended rating provides additional design margin in applications with gate drive voltage transients or overshoot conditions. The device remains fully compatible with standard ±20V gate drive circuits.

Q: How do power dissipation ratings affect substitute selection?

A: The BSL307SPT is rated at 2W (Ta), while substitutes range from 1.6W to 1.8W. Lower power dissipation ratings indicate improved thermal efficiency at equivalent current levels. For applications operating near thermal limits, verify that the substitute device's power dissipation rating is sufficient for the specific current and duty cycle. The CPH6350-TL-W at 1.6W is suitable for continuous operation at rated current with proper thermal management.

Q: Are all substitute parts RoHS3 compliant and MSL 1 rated?

A: Yes. All three substitute parts (CPH6350-TL-W, DMP3050LVT-7, and FDC658P) are confirmed RoHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity ratings, matching the BSL307SPT specification. These devices meet environmental and manufacturing standards for lead-free soldering and unlimited shelf life storage.

Q: What is the difference between the CPH6350-TL-W and FDC658P for low-current applications?

A: Both devices are suitable for applications below 4A continuous drain current. The CPH6350-TL-W provides higher current capacity (6A rating) with lower gate charge (13nC), making it the preferred choice for designs requiring future current scaling or improved switching efficiency. The FDC658P is optimized for 4A operation with 12nC gate charge and is part of the PowerTrench® series. Select based on current requirements and available inventory.

Q: Can substitute parts be used in high-frequency switching applications?

A: Yes. All substitute parts feature lower gate charge than the BSL307SPT, supporting higher switching frequencies with reduced gate drive power loss. The CPH6350-TL-W (13nC) and DMP3050LVT-7 (10.5nC) are particularly suitable for high-frequency applications. Verify that the gate drive circuit can supply the required charge at the target frequency.

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