EKI04036 Equivalent & Substitute Parts Reference Page

Part Overview

The EKI04036 (Manufacturer: Sanken Electric USA Inc.) is a N-Channel MOSFET with a Drain to Source voltage rating of 40 V and a continuous drain current of 80A (Tc), offered in a TO-220-3 through-hole package. This transistor, previously RoHS compliant and listed as original stock, is currently classified as Obsolete. As a result, identifying equivalent and substitute MOSFETs with strictly compatible electrical and mechanical parameters is required to ensure seamless integration in existing designs and inventory management.

Key Parameters

Parameter	Value
FET Type	N-Channel
Technology	MOSFET (Metal Oxide)
Drain to Source Voltage (Vdss)	40 V
Current - Continuous Drain (Id) @ 25°C	80A (Tc)
Drive Voltage (Max Rds On, Min Rds On)	4.5V, 10V
Rds On (Max) @ Id, Vgs	3.8mOhm @ 58.5A, 10V
Vgs(th) (Max) @ Id	2.5V @ 1mA
Gate Charge (Qg) (Max) @ Vgs	63.2 nC @ 10 V
Vgs (Max)	±20V
Input Capacitance (Ciss) (Max) @ Vds	3910 pF @ 25 V
Power Dissipation (Max)	116W (Tc)
Operating Temperature	150°C (TJ)
Mounting Type	Through Hole
Package / Case	TO-220-3
RoHS Status	RoHS Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute candidates for the EKI04036 are selected based strictly on matching the following key electrical and mechanical parameters, ensuring form, fit, and function compatibility:

FET Type: N-Channel
Technology: MOSFET (Metal Oxide)
Drain to Source Voltage (Vdss): 40 V
Current - Continuous Drain (Id) @ 25°C: ≥ 80A (Tc)
Drive Voltage (Max Rds On, Min Rds On): 4.5V, 10V
Package / Case: TO-220-3 or compatible
Mounting Type: Through Hole
Vgs (Max): ±20V or as specified
RoHS and MSL Compliance for environmental and handling compatibility

Parameters not explicitly matching between main and substitute parts have not been considered for suitability.

Parameter Comparison

Part Number	Manufacturer	Vdss	Id (Tc)	Drive Voltage	Rds On (Max)	Vgs(th) (Max)	Gate Charge (Qg)	Vgs (Max)	Input Capacitance (Ciss) (Max)	Power Dissipation (Max)	Operating Temp (TJ)	Mounting Type	Package / Case	RoHS Status	MSL
EKI04036	Sanken Electric USA Inc.	40 V	80A	4.5V, 10V	3.8mOhm @ 58.5A, 10V	2.5V @ 1mA	63.2 nC @ 10 V	±20V	3910 pF @ 25 V	116W	150°C	Through Hole	TO-220-3	RoHS	1 (Unlimited)
CSD18503KCS	National Semiconductor	40 V	100A	4.5V, 10V	4.5mOhm @ 75A, 10V	2.3V @ 250µA	36 nC @ 10 V	±20V	3150 pF @ 20 V	188W	-55°C ~ 150°C	Through Hole	TO-220-3	--	--
IPP80N04S404AKSA1	Infineon Technologies	40 V	80A	10V	4.6mOhm @ 80A, 10V	4V @ 35µA	43 nC @ 10 V	±20V	3440 pF @ 25 V	71W	-55°C ~ 175°C	Through Hole	TO-220-3	ROHS3	1 (Unlimited)
IPP80N04S4L04AKSA1	Infineon Technologies	40 V	80A	4.5V, 10V	4.3mOhm @ 80A, 10V	2.2V @ 35µA	60 nC @ 10 V	+20V, -16V	4690 pF @ 25 V	71W	-55°C ~ 175°C	Through Hole	TO-220-3	ROHS3	1 (Unlimited)

Engineering Selection Recommendations

The EKI04036 is no longer in production (obsolete). The listed substitutes—CSD18503KCS, IPP80N04S404AKSA1, and IPP80N04S4L04AKSA1—are direct alternatives with active or last-time-buy availability. All substitutes feature through-hole mounting and TO-220-3 compatible packages, supporting device replacement from a mechanical perspective. RoHS compliance and MSL 1 status are present for the Infineon Technologies substitutes, facilitating straightforward inventory and handling alignment for compliant manufacturing or service requirements.

Frequently Asked Questions (FAQ)

Q1: Which key parameters must match when replacing EKI04036 with a substitute MOSFET?
A1: The essential parameters for substitution include FET Type (N-Channel), Drain to Source Voltage (Vdss), Current - Continuous Drain (Id), Drive Voltage, Package / Case, Mounting Type, Vgs(Max), and compliance features such as RoHS status and MSL.

Q2: Are all substitutes physically compatible with the original TO-220-3 footprint?
A2: The substitute components provided are listed with TO-220-3 package or compatible variants and are designated for through-hole mounting, matching the physical installation requirements.

Q3: Is RoHS compliance or MSL status required for all substitutions?
A3: RoHS status and Moisture Sensitivity Level (MSL) affect component handling and environmental compliance. Substitute parts with ROHS3 and MSL 1 compatibility are suitable for compliant applications. Always select substitutes with matching compliance for quality assurance.

Q4: Can differences in Rds On, Gate Charge, or Input Capacitance affect substitution?
A4: Only substitute parts with explicitly compatible key parameters are listed. For applications requiring strict adherence to these minor parameters, compare the specified values for suitability.

Q5: Does product status (active, obsolete, last time buy) impact substitution choice?
A5: Product status determines long-term availability. Active substitutes ensure ongoing supply, while last time buy parts provide short-term continuity for legacy designs. Obsolete status requires immediate review and selection of current alternatives.

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