IRFR3910TRLPBF N-Channel 100V 16A MOSFET Equivalent & Substitute Parts

Part Overview

The IRFR3910TRLPBF is an N-Channel MOSFET manufactured by Infineon Technologies, rated for 100V drain-to-source voltage and 16A continuous drain current in a surface mount DPAK package. This device belongs to the HEXFET® series and is classified as "Not For New Designs," indicating it has been superseded in Infineon's product portfolio. Due to its obsolete status, equivalent and substitute parts from active product lines are necessary for ongoing production, maintenance, and new application development where the electrical and mechanical specifications remain compatible.

Key Parameters

Parameter	Value	Unit
Drain-to-Source Voltage (Vdss)	100	V
Continuous Drain Current (Id) @ 25°C	16	A (Tc)
On-Resistance (Rds On) @ 10A, 10V	115	mOhm
Gate Threshold Voltage (Vgs(th)) @ 250µA	4	V
Gate Charge (Qg) @ 10V	44	nC
Power Dissipation (Max)	79	W (Tc)
Operating Temperature Range	-55 to 175	°C (TJ)
Package Type	TO-252-3 DPAK	Surface Mount
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the IRFR3910TRLPBF is determined by strict equivalence across the following critical parameters:

Primary Substitution Criteria:

Drain-to-Source Voltage (Vdss): Must equal or exceed 100V
Package Type: Must be TO-252-3 DPAK (surface mount, identical footprint)
FET Type: N-Channel MOSFET technology
Mounting: Surface mount only
Compliance: RoHS3 compliant, REACH unaffected

Secondary Compatibility Parameters:

Continuous Drain Current (Id): Minimum 16A at 25°C
On-Resistance (Rds On): Lower values indicate improved performance but do not disqualify substitutes
Gate Threshold Voltage (Vgs(th)): Must be compatible with 10V drive voltage
Operating Temperature: Must support -55°C to 175°C range
Moisture Sensitivity Level: MSL 1 (Unlimited)

Substitutes are grouped into two categories: Parametric Equivalents (identical electrical specifications) and Performance Upgrades (enhanced current handling or reduced on-resistance while maintaining full backward compatibility).

Parameter Comparison

Part Number	Manufacturer	Vdss (V)	Id @ 25°C (A)	Rds On @ 10V (mOhm)	Vgs(th) (V)	Qg @ 10V (nC)	Power Diss. (W)	Temp Range (°C)	Status
IRFR3910TRLPBF	Infineon	100	16	115 @ 10A	4 @ 250µA	44 @ 10V	79 (Tc)	-55 to 175	Not For New Designs
IRFR3910TRPBF	Infineon	100	16	115 @ 10A	4 @ 250µA	44 @ 10V	79 (Tc)	-55 to 175	Active
STD10NF10T4	STMicroelectronics	100	13	130 @ 5A	4 @ 250µA	21 @ 10V	50 (Tc)	-55 to 175	Active
FQD19N10LTM	onsemi	100	15.6	100 @ 7.8A	2 @ 250µA	18 @ 5V	50 (Tc)	-55 to 150	Active
NTD6416ANLT4G	onsemi	100	19	74 @ 19A	2.2 @ 250µA	40 @ 10V	71 (Tc)	-55 to 175	Active
STD15NF10T4	STMicroelectronics	100	23	65 @ 12A	4 @ 250µA	40 @ 10V	70 (Tc)	-55 to 175	Active
BUK7275-100A,118	Nexperia USA Inc.	100	21.7	75 @ 13A	4 @ 1mA	—	89 (Tc)	-55 to 175	Obsolete
ZXMN10A25KTC	Diodes Incorporated	100	4.2	125 @ 2.9A	4 @ 250µA	17.16 @ 10V	2.11 (Ta)	-55 to 150	Active

Engineering Selection Recommendations

Direct Parametric Equivalent (Recommended Primary Substitute):

IRFR3910TRPBF is the direct parametric equivalent to IRFR3910TRLPBF. Both devices share identical electrical specifications (100V, 16A, 115mOhm Rds On, 79W power dissipation) and are housed in the TO-252-3 DPAK package. The critical distinction is product status: IRFR3910TRPBF is classified as Active, making it the preferred choice for new designs and ongoing production. This part maintains full backward compatibility with existing circuit designs and PCB layouts. Both parts are ROHS3 compliant with MSL 1 rating.

Performance-Enhanced Substitutes (Active Status):

NTD6416ANLT4G (onsemi) provides enhanced performance with 19A continuous drain current and reduced on-resistance (74mOhm @ 19A, 10V) compared to the original 16A/115mOhm specification. This device maintains 100V Vdss, operates across -55°C to 175°C, and is housed in the identical DPAK package. The lower on-resistance results in reduced power dissipation and improved thermal performance in high-current applications.

STD15NF10T4 (STMicroelectronics) offers 23A continuous drain current with 65mOhm on-resistance (@ 12A, 10V), representing a significant performance upgrade. This device maintains 100V Vdss, full temperature range compatibility (-55°C to 175°C), and DPAK packaging. The STripFET™ II series technology provides improved switching characteristics.

Partial Compatibility Substitutes (Current Derating Required):

STD10NF10T4 (STMicroelectronics) is rated for 13A continuous drain current, which is below the original 16A specification. This device is suitable only for applications where the actual operating current does not exceed 13A. It features reduced on-resistance (130mOhm @ 5A, 10V) and lower power dissipation (50W Tc), making it appropriate for lower-current variants of the original design.

FQD19N10LTM (onsemi) is rated for 15.6A continuous drain current, marginally below the 16A specification. This device operates at a reduced maximum temperature of 150°C (versus 175°C for the original), which may limit suitability in high-temperature environments. The improved on-resistance (100mOhm @ 7.8A, 10V) and lower gate charge (18nC @ 5V) offer switching performance benefits.

Not Recommended for Direct Substitution:

ZXMN10A25KTC (Diodes Incorporated) is rated for only 4.2A continuous drain current and 2.11W power dissipation, making it unsuitable for applications requiring the original 16A specification. This device is fundamentally different in current-handling capability despite matching voltage and package specifications.

BUK7275-100A,118 (Nexperia USA Inc.) is classified as Obsolete, which disqualifies it from new design consideration. Although it offers enhanced current (21.7A) and reduced on-resistance (75mOhm), its obsolete status creates supply chain risk.

Frequently Asked Questions (FAQ)

Q: Can IRFR3910TRPBF be used as a direct replacement for IRFR3910TRLPBF?

A: Yes. IRFR3910TRPBF is the direct parametric equivalent with identical electrical specifications (100V, 16A, 115mOhm Rds On, 79W power dissipation) and package type (TO-252-3 DPAK). The only difference is product status: IRFR3910TRPBF is Active, while IRFR3910TRLPBF is Not For New Designs. No circuit modifications are required.

Q: What is the difference between Tc and Ta power dissipation ratings?

A: Tc (case temperature) represents power dissipation when the device case is maintained at 25°C, typically used for junction-to-case thermal calculations. Ta (ambient temperature) represents power dissipation in free air at 25°C ambient. Tc ratings are generally higher and more relevant for applications with active thermal management (heatsinks). When comparing devices, use the same rating type for accurate comparison.

Q: Can I use NTD6416ANLT4G or STD15NF10T4 as substitutes if my circuit only draws 12A?

A: Yes. Both devices are rated for higher continuous drain current (19A and 23A respectively) than the original 16A specification. At 12A operating current, both devices operate well within their ratings and provide improved performance characteristics (lower on-resistance, reduced power dissipation). No circuit modifications are required. These are performance upgrades suitable for direct substitution.

Q: Why is STD10NF10T4 listed as a substitute if it is only rated for 13A?

A: STD10NF10T4 is included as a partial compatibility option for applications where the actual operating current does not exceed 13A. If your circuit design operates at or below 13A, this device is suitable. However, if your application requires the full 16A capability of the original part, STD10NF10T4 is not appropriate. Verify your actual current requirements before selecting this substitute.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed in this document are RoHS3 compliant and REACH unaffected, matching the compliance status of the original IRFR3910TRLPBF. All devices carry MSL 1 (Unlimited) moisture sensitivity rating.

Q: What is the significance of the DPAK package designation?

A: DPAK (also designated TO-252-3 or SC-63) is a three-lead surface mount package consisting of two signal leads and one tab lead for thermal connection. All substitute parts in this document use the identical DPAK package, ensuring PCB footprint compatibility and no layout modifications are required. This package standardization is critical for direct substitution.

Q: Can FQD19N10LTM be used in applications operating at 175°C?

A: No. FQD19N10LTM is rated for a maximum operating temperature of 150°C, while the original IRFR3910TRLPBF and most other substitutes support -55°C to 175°C. If your application requires operation at temperatures above 150°C, FQD19N10LTM is not suitable. Select NTD6416ANLT4G, STD15NF10T4, or IRFR3910TRPBF instead.

Q: What does "Not For New Designs" mean for the IRFR3910TRLPBF?

A: "Not For New Designs" indicates that Infineon has discontinued active development and marketing of this part. While existing inventory may be available, the manufacturer recommends using alternative parts for new circuit designs. IRFR3910TRPBF is the recommended replacement from Infineon's active product line.

Q: How do I determine which substitute is best for my application?

A: Evaluate based on three criteria: (1) Current requirement—select a device rated for at least your maximum operating current; (2) Temperature range—ensure the device supports your operating temperature limits; (3) Product status—prefer Active status devices for supply chain reliability. If your application operates at 16A or higher, use NTD6416ANLT4G or STD15NF10T4. If current is lower, IRFR3910TRPBF is the direct equivalent.

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