IRLR110ATM N-Channel MOSFET Equivalent & Substitute Parts

Part Overview

The IRLR110ATM is an N-Channel MOSFET manufactured by onsemi, rated for 100V drain-to-source voltage with 4.7A continuous drain current at 25°C. The device is housed in a TO-252AA (DPAK) surface mount package and is classified as obsolete. Due to its obsolete status, equivalent and substitute parts are necessary for ongoing design support, production continuity, and component sourcing.

Key Parameters

Parameter	Value	Unit
Drain-to-Source Voltage (Vdss)	100	V
Continuous Drain Current (Id) @ 25°C	4.7	A (Tc)
On-Resistance (Rds On) @ Id, Vgs	440 mOhm @ 2.35A, 5V	mOhm
Gate Threshold Voltage (Vgs(th)) @ Id	2	V @ 250µA
Gate Charge (Qg) @ Vgs	8	nC @ 5V
Input Capacitance (Ciss) @ Vds	235	pF @ 25V
Power Dissipation (Max)	2.5 (Ta), 22 (Tc)	W
Operating Temperature Range	-55 to 150	°C (TJ)
Package Type	TO-252-3, DPAK	Surface Mount
Vgs (Max)	±20	V

Substitute Part Grouping Explanation

Substitution of the IRLR110ATM is determined by the following critical parameters:

Primary Substitution Criteria:

Drain-to-Source Voltage (Vdss): Must be equal to or greater than 100V
Continuous Drain Current (Id): Must support the application's current requirements
Package Type: TO-252-3 (DPAK) surface mount configuration
On-Resistance (Rds On): Lower values indicate improved performance; higher values require thermal analysis
Gate Threshold Voltage (Vgs(th)): Must be compatible with drive circuitry
Operating Temperature Range: Must encompass application requirements

Substitution Groups:

Group 1: Direct Equivalents (100V, 4.3A-4.7A) These parts share identical voltage ratings and comparable current ratings with the IRLR110ATM. They are pin-compatible and functionally interchangeable in most applications.

Group 2: Higher Current Capability (100V, 21.7A) The BUK7275-100A,118 provides significantly higher current capacity while maintaining the 100V voltage rating. This part is suitable for applications requiring higher current handling or thermal margin.

Group 3: Higher Voltage Rating (200V, 1.5A-6A) The AOD4504 operates at 200V, providing voltage margin above the IRLR110ATM specification. Current rating is lower, limiting its use to lower-current applications.

Parameter Comparison

Parameter	IRLR110ATM (Main)	IRLR110PBF	IRLR110TRPBF	BUK7275-100A,118	AOD4504
Manufacturer	onsemi	Vishay Siliconix	Vishay Siliconix	Nexperia USA Inc.	Alpha & Omega Semiconductor Inc.
Vdss (V)	100	100	100	100	200
Id @ 25°C (A)	4.7 (Tc)	4.3 (Tc)	4.3 (Tc)	21.7 (Tc)	1.5 (Ta), 6 (Tc)
Rds On (mOhm)	440 @ 2.35A, 5V	540 @ 2.6A, 5V	540 @ 2.6A, 5V	75 @ 13A, 10V	400 @ 3A, 10V
Vgs(th) (V)	2 @ 250µA	2 @ 250µA	2 @ 250µA	4 @ 1mA	3.7 @ 250µA
Qg (nC)	8 @ 5V	6.1 @ 5V	6.1 @ 5V	115 @ 10V	115 @ 10V
Ciss (pF)	235 @ 25V	250 @ 25V	250 @ 25V	1210 @ 25V	328 @ 100V
Power Dissipation (W)	2.5 (Ta), 22 (Tc)	2.5 (Ta), 25 (Tc)	2.5 (Ta), 25 (Tc)	89 (Tc)	2.5 (Ta), 42.5 (Tc)
Operating Temp (°C)	-55 to 150	-55 to 150	-55 to 150	-55 to 175	-55 to 175
Package	TO-252-3, DPAK	TO-252-3, DPAK	TO-252-3, DPAK	TO-252-3, DPAK	TO-252-3, DPAK
Product Status	Obsolete	Active	Active	Obsolete	Active
RoHS Status	REACH Unaffected	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	REACH Unaffected

Engineering Selection Recommendations

For Direct Replacement (Preferred): The IRLR110PBF, IRLR110TRPBF, IRLR110TRL, IRLR110TRLPBF, and IRLR110TRR are functionally equivalent to the IRLR110ATM. These Vishay Siliconix variants share identical electrical specifications and package configuration. IRLR110PBF and IRLR110TRPBF carry ROHS3 compliance, making them suitable for applications with environmental or regulatory requirements. These parts are classified as active products, ensuring long-term availability.

For Higher Current Applications: The BUK7275-100A,118 from Nexperia provides 21.7A continuous drain current at the same 100V rating. This part is suitable for applications requiring higher current capacity or improved thermal performance. The significantly lower on-resistance (75 mOhm vs. 440 mOhm) reduces power dissipation. However, this part is classified as obsolete and carries automotive qualification (AEC-Q101). Higher gate charge (115 nC) and input capacitance (1210 pF) require verification of drive circuit compatibility.

For Higher Voltage Margin: The AOD4504 operates at 200V, providing voltage headroom above the 100V specification. This part is suitable for applications where voltage transients or design margin are critical. The lower continuous drain current (1.5A at Ta, 6A at Tc) limits its use to lower-current circuits. This part is classified as active and carries ROHS3 compliance.

Compliance Considerations:

IRLR110PBF and IRLR110TRPBF: ROHS3 compliant, recommended for new designs
BUK7275-100A,118: ROHS3 compliant but obsolete; use only if current availability is confirmed
AOD4504: Active product with ROHS3 compliance; suitable for new designs requiring higher voltage rating

Frequently Asked Questions (FAQ)

Q: Can IRLR110PBF directly replace IRLR110ATM? A: Yes. Both parts share identical electrical specifications (100V, 4.3A-4.7A), gate threshold voltage, and DPAK package configuration. The primary difference is packaging format (tube vs. standard) and RoHS compliance status. IRLR110PBF is ROHS3 compliant and classified as active.

Q: What is the difference between IRLR110TRPBF and IRLR110TRL? A: Both parts have identical electrical specifications and package type. The primary difference is packaging format: IRLR110TRPBF is supplied in Cut Tape (CT) and Digi-Reel format, while IRLR110TRL uses standard packaging. IRLR110TRPBF is ROHS3 compliant.

Q: Can BUK7275-100A,118 be used in place of IRLR110ATM? A: BUK7275-100A,118 is pin-compatible and shares the same 100V voltage rating and DPAK package. However, it provides significantly higher current capacity (21.7A vs. 4.7A) and lower on-resistance (75 mOhm vs. 440 mOhm). The higher gate charge (115 nC vs. 8 nC) and input capacitance (1210 pF vs. 235 pF) require verification that the drive circuit can supply adequate gate current and switching speed. This part is obsolete.

Q: Is AOD4504 suitable as a substitute? A: AOD4504 is pin-compatible and shares the DPAK package. However, it operates at 200V (vs. 100V) and provides lower continuous current (1.5A at Ta, 6A at Tc vs. 4.7A). Use AOD4504 only in applications where the higher voltage rating is beneficial and current requirements do not exceed 6A at Tc. This part is active and ROHS3 compliant.

Q: What are the key differences in gate charge between these parts? A: Gate charge directly affects switching speed and drive circuit requirements. IRLR110ATM has 8 nC at 5V, while Vishay equivalents (IRLR110PBF, IRLR110TRPBF) have 6.1 nC at 5V. BUK7275-100A,118 and AOD4504 both have 115 nC at 10V, requiring significantly more gate current for equivalent switching speed. Higher gate charge increases switching losses and may require drive circuit redesign.

Q: Are all substitute parts available in the same package? A: Yes. All listed substitute parts use TO-252-3 (DPAK) surface mount package with identical pinout. No PCB layout changes are required for direct substitution.

Q: Which substitute part is recommended for new designs? A: IRLR110PBF or IRLR110TRPBF are recommended for new designs. Both are active products, ROHS3 compliant, and functionally equivalent to IRLR110ATM. IRLR110TRPBF offers the advantage of Cut Tape and Digi-Reel packaging for automated assembly.

Q: What is the impact of higher on-resistance in BUK7275-100A,118? A: Lower on-resistance (75 mOhm vs. 440 mOhm) reduces conduction losses and heat generation. In applications where the IRLR110ATM operates near its current limit, BUK7275-100A,118 provides improved thermal performance and reduced power dissipation. However, higher gate charge increases switching losses, requiring overall thermal analysis.

Q: Can these parts be used interchangeably in existing designs? A: Direct equivalents (IRLR110PBF, IRLR110TRPBF, IRLR110TRL, IRLR110TRLPBF, IRLR110TRR) are interchangeable without design changes. BUK7275-100A,118 and AOD4504 require verification of drive circuit compatibility due to differences in gate charge and threshold voltage. Thermal analysis is recommended when substituting with higher-current parts.

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