ZXMP10A18K P-Channel MOSFET Equivalent & Substitute Parts

Part Overview

The ZXMP10A18K is a P-Channel MOSFET manufactured by Diodes Incorporated, rated for 100V drain-to-source voltage with 3.8A continuous drain current at 25°C. The device is packaged in TO-252-3 (DPAK) surface mount configuration and is designed for general-purpose switching and amplification applications requiring moderate current handling in compact form factors.

The ZXMP10A18K is classified as Obsolete. Equivalent and substitute parts are necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements. Direct substitutes and manufacturer-recommended alternatives are available from active product lines with identical or enhanced electrical characteristics.

Key Parameters

Parameter	Value	Unit
FET Type	P-Channel	—
Drain to Source Voltage (Vdss)	100	V
Current - Continuous Drain (Id) @ 25°C	3.8	A (Ta)
Rds On (Max) @ Id, Vgs	150	mOhm @ 2.8A, 10V
Vgs(th) (Max) @ Id	4	V @ 250µA
Gate Charge (Qg) (Max) @ Vgs	26.9	nC @ 10V
Vgs (Max)	±20	V
Input Capacitance (Ciss) (Max) @ Vds	1055	pF @ 50V
Power Dissipation (Max)	2.17	W (Ta)
Operating Temperature	-55 to 150	°C (TJ)
Mounting Type	Surface Mount	—
Package / Case	TO-252-3, DPAK (2 Leads + Tab), SC-63	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the ZXMP10A18K is determined by the following critical parameters:

Mandatory Matching Criteria:

FET Type: P-Channel
Drain to Source Voltage (Vdss): 100V minimum
Package / Case: TO-252-3 (DPAK) surface mount configuration
Mounting Type: Surface Mount
Gate Voltage (Vgs Max): ±20V

Performance Compatibility Criteria:

Continuous Drain Current (Id): Equal to or greater than 3.8A
Rds On (Max): Equal to or less than 150mOhm (lower values acceptable)
Vgs(th) (Max): Equal to or less than 4V (lower values acceptable)
Gate Charge (Qg): Equal to or less than 26.9nC (lower values acceptable)
Operating Temperature Range: Minimum -55°C to 150°C

Substitute parts meeting these criteria maintain electrical and mechanical compatibility while providing equivalent or superior performance characteristics. Parts exceeding these specifications in current capacity, gate charge, or thermal performance are acceptable as direct replacements.

Parameter Comparison

Parameter	ZXMP10A18K	ZXMP10A18KTC	RSD131P10TL	SPD15P10PLGBTMA1	SUD09P10-195-GE3
Manufacturer	Diodes Inc.	Diodes Inc.	Rohm Semi.	Infineon Tech.	Vishay Siliconix
Product Status	Obsolete	Active	Active	Active	Active
FET Type	P-Channel	P-Channel	P-Channel	P-Channel	P-Channel
Vdss (V)	100	100	100	100	100
Id @ 25°C (A)	3.8 (Ta)	3.8 (Ta)	13 (Tc)	15 (Tc)	8.8 (Tc)
Rds On (Max) (mOhm)	150 @ 2.8A, 10V	150 @ 2.8A, 10V	200 @ 6.5A, 10V	200 @ 11.3A, 10V	195 @ 3.6A, 10V
Vgs(th) (Max) (V)	4 @ 250µA	4 @ 250µA	2.5 @ 1mA	2 @ 1.54mA	2.5 @ 250µA
Gate Charge (Qg) (nC)	26.9 @ 10V	26.9 @ 10V	40 @ 10V	62 @ 10V	34.8 @ 10V
Vgs (Max) (V)	±20	±20	±20	±20	±20
Ciss (Max) (pF)	1055 @ 50V	1055 @ 50V	2400 @ 25V	1490 @ 25V	1055 @ 50V
Power Dissipation (Max) (W)	2.17 (Ta)	2.17 (Ta)	0.85 (Ta), 20 (Tc)	128 (Tc)	2.5 (Ta), 32.1 (Tc)
Operating Temperature (°C)	-55 to 150	-55 to 150	to 150	-55 to 175	-55 to 150
Package / Case	TO-252-3	TO-252-3	TO-252-3	TO-252-3	TO-252-3
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Direct Equivalent (Recommended for Pin-for-Pin Replacement):

ZXMP10A18KTC is the direct equivalent to ZXMP10A18K. Both parts are manufactured by Diodes Incorporated with identical electrical specifications, gate charge characteristics, and input capacitance. ZXMP10A18KTC is classified as Active product status, ensuring long-term availability and supply chain continuity. This part is supplied in Cut Tape (CT) and Digi-Reel® packaging formats. Selection of ZXMP10A18KTC eliminates obsolescence risk while maintaining 100% electrical and mechanical compatibility.

Enhanced Performance Alternatives:

SPD15P10PLGBTMA1 (Infineon Technologies) provides superior current handling capacity (15A versus 3.8A) within the same TO-252-3 package footprint. This part features lower gate threshold voltage (2V versus 4V), reduced gate charge (62nC versus 26.9nC), and extended operating temperature range (-55°C to 175°C). The part is classified as Active with extensive inventory availability (637,975 units). Selection is appropriate for applications requiring higher current capacity or improved thermal performance.

RSD131P10TL (Rohm Semiconductor) offers 13A continuous drain current with lower gate threshold voltage (2.5V) and enhanced thermal performance (20W at Tc). This part is classified as Active and suitable for applications requiring current capacity between the original specification and the Infineon alternative.

SUD09P10-195-GE3 (Vishay Siliconix) provides 8.8A continuous drain current with matched input capacitance (1055pF) to the original part. This TrenchFET® technology device is classified as Active with substantial inventory (23,400 units). REACH Status is listed as Affected; compliance verification is required for applications subject to REACH regulations.

All substitute parts maintain ROHS3 compliance, MSL Level 1 (Unlimited), and TO-252-3 package compatibility. Selection among alternatives depends on application current requirements, thermal management capabilities, and regulatory compliance obligations.

Frequently Asked Questions (FAQ)

Q: Can ZXMP10A18KTC be used as a direct replacement for ZXMP10A18K?

A: Yes. ZXMP10A18KTC is manufactured by Diodes Incorporated with identical electrical specifications, including Vdss (100V), Id (3.8A), Rds On (150mOhm), gate charge (26.9nC), and input capacitance (1055pF). Both parts use TO-252-3 packaging. The primary difference is product status: ZXMP10A18K is Obsolete while ZXMP10A18KTC is Active. ZXMP10A18KTC is the recommended direct replacement.

Q: What is the difference between the substitute parts in terms of current capacity?

A: The substitute parts offer varying current ratings: ZXMP10A18KTC (3.8A), SUD09P10-195-GE3 (8.8A), RSD131P10TL (13A), and SPD15P10PLGBTMA1 (15A). All parts maintain 100V Vdss rating and TO-252-3 packaging. Selection depends on application current requirements. Higher-rated parts are suitable for applications exceeding 3.8A continuous drain current.

Q: Are all substitute parts compatible with the same PCB layout?

A: Yes. All substitute parts use TO-252-3 (DPAK) surface mount packaging with identical pin configuration and footprint dimensions. PCB layout modifications are not required for mechanical compatibility. Electrical circuit verification is necessary to confirm suitability based on gate charge, threshold voltage, and Rds On characteristics.

Q: What is the significance of gate charge (Qg) differences among substitute parts?

A: Gate charge affects switching speed and driver circuit requirements. The original ZXMP10A18K specifies 26.9nC at 10V. ZXMP10A18KTC matches this specification exactly. SUD09P10-195-GE3 specifies 34.8nC, RSD131P10TL specifies 40nC, and SPD15P10PLGBTMA1 specifies 62nC. Higher gate charge requires increased driver current or extended switching times. Driver circuit compatibility must be verified when selecting parts with higher gate charge values.

Q: Does operating temperature range affect part selection?

A: Operating temperature range is specified as -55°C to 150°C for ZXMP10A18K, ZXMP10A18KTC, and SUD09P10-195-GE3. SPD15P10PLGBTMA1 extends to -55°C to 175°C. RSD131P10TL specifies maximum temperature of 150°C without lower limit specification. Applications requiring operation above 150°C require SPD15P10PLGBTMA1. Applications with standard temperature requirements (-55°C to 150°C) are compatible with all alternatives.

Q: What is the impact of Rds On variation on circuit performance?

A: Rds On (on-resistance) directly affects power dissipation and switching losses. The original ZXMP10A18K specifies 150mOhm maximum at 2.8A, 10V. ZXMP10A18KTC matches this specification. SUD09P10-195-GE3 specifies 195mOhm, RSD131P10TL specifies 200mOhm, and SPD15P10PLGBTMA1 specifies 200mOhm. Higher Rds On values increase power dissipation proportionally. Circuit thermal analysis is required when selecting parts with higher Rds On specifications.

Q: Are there packaging format differences among substitute parts?

A: ZXMP10A18KTC is supplied in Cut Tape (CT) and Digi-Reel® formats. SPD15P10PLGBTMA1 is supplied in Cut Tape (CT) and Digi-Reel® formats. SUD09P10-195-GE3 is supplied in Cut Tape (CT) and Digi-Reel® formats. RSD131P10TL packaging format is not specified in available data. All parts use TO-252-3 surface mount package. Packaging format selection depends on assembly process requirements and volume specifications.

Q: What compliance certifications apply to all substitute parts?

A: All substitute parts are ROHS3 Compliant, MSL Level 1 (Unlimited), and classified under ECCN EAR99. ZXMP10A18K, ZXMP10A18KTC, RSD131P10TL, and SPD15P10PLGBTMA1 are listed as REACH Unaffected. SUD09P10-195-GE3 is listed as REACH Affected. Applications subject to REACH regulations require verification of SUD09P10-195-GE3 compliance status before selection.

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