MCH6436-TL-E N-Channel MOSFET 30V 6A Equivalent & Substitute Parts

Part Overview

The MCH6436-TL-E is an N-Channel MOSFET manufactured by onsemi, rated for 30V drain-to-source voltage with 6A continuous drain current at 25°C. This device is designed for surface mount applications in the 6-MCPH package configuration. The part is discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives that maintain electrical and mechanical compatibility within specified parameter tolerances.

Key Parameters

Parameter	Value	Unit
FET Type	N-Channel	—
Drain to Source Voltage (Vdss)	30	V
Current - Continuous Drain (Id) @ 25°C	6	A (Ta)
Rds On (Max) @ Id, Vgs	34	mOhm @ 3A, 4.5V
Gate Charge (Qg) (Max) @ Vgs	7.5	nC @ 4.5V
Vgs (Max)	±12	V
Input Capacitance (Ciss) (Max) @ Vds	710	pF @ 10V
Power Dissipation (Max)	1.5	W (Ta)
Operating Temperature (TJ)	150	°C
Mounting Type	Surface Mount	—
Package / Case	6-SMD, Flat Leads	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the MCH6436-TL-E is determined by equivalence across the following critical parameters:

Electrical Compatibility Requirements:

FET Type: N-Channel topology
Drain to Source Voltage (Vdss): 30V minimum rating
Gate-Source Voltage (Vgs): ±12V maximum rating
Operating Temperature: 150°C (TJ) maximum
RoHS3 Compliance and REACH Unaffected status

Mechanical Compatibility Requirements:

Mounting Type: Surface Mount
Package Configuration: 6-SMD, Flat Leads format

Performance Considerations:

Continuous Drain Current (Id): Minimum 4.5A at 25°C
On-State Resistance (Rds On): Maximum 34mOhm specification
Gate Charge (Qg): Maximum 8.1nC at 4.5V
Input Capacitance (Ciss): Maximum 900pF at specified voltage

The RF6E045AJTCR from Rohm Semiconductor meets all electrical and mechanical substitution criteria while maintaining compliance certifications. The substitute part operates within the same voltage and temperature envelope with compatible package geometry.

Parameter Comparison

Parameter	MCH6436-TL-E (onsemi)	RF6E045AJTCR (Rohm)	Unit
FET Type	N-Channel	N-Channel	—
Drain to Source Voltage (Vdss)	30	30	V
Current - Continuous Drain (Id) @ 25°C	6	4.5	A (Ta)
Rds On (Max) @ Id, Vgs	34 @ 3A, 4.5V	23.7 @ 4.5A, 4.5V	mOhm
Gate Charge (Qg) (Max) @ Vgs	7.5 @ 4.5V	8.1 @ 4.5V	nC
Vgs (Max)	±12	±12	V
Input Capacitance (Ciss) (Max) @ Vds	710 @ 10V	900 @ 15V	pF
Power Dissipation (Max)	1.5 (Ta)	1.0 (Tc)	W
Operating Temperature (TJ)	150	150	°C
Mounting Type	Surface Mount	Surface Mount	—
Package / Case	6-SMD, Flat Leads	6-SMD, Flat Leads	—
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	—

Engineering Selection Recommendations

MCH6436-TL-E (onsemi):

Product Status: Discontinued at DiGi Electronics
RoHS3 Compliant
REACH Unaffected
Inventory Status: 9430 pieces available

RF6E045AJTCR (Rohm Semiconductor):

Product Status: Active
RoHS3 Compliant
REACH Unaffected
Inventory Status: 6100 pieces available
Packaging: Cut Tape (CT) & Digi-Reel® options

The RF6E045AJTCR is a direct substitute for the discontinued MCH6436-TL-E. Both devices share identical voltage ratings (30V Vdss), matching gate-source voltage limits (±12V), and equivalent operating temperature ranges (150°C TJ). Both maintain ROHS3 compliance and REACH unaffected status. The substitute part is currently in active production status, ensuring long-term availability and supply chain continuity.

The primary design consideration is the continuous drain current specification: the MCH6436-TL-E is rated for 6A while the RF6E045AJTCR is rated for 4.5A. Applications requiring continuous current above 4.5A at 25°C require thermal management analysis or circuit redesign. The RF6E045AJTCR exhibits superior on-state resistance (23.7mOhm versus 34mOhm), resulting in lower conduction losses in applications operating within the 4.5A continuous current envelope.

Frequently Asked Questions (FAQ)

Q: Can the RF6E045AJTCR directly replace the MCH6436-TL-E in all applications?

A: The RF6E045AJTCR is electrically and mechanically compatible with the MCH6436-TL-E for applications where continuous drain current does not exceed 4.5A at 25°C. Both devices operate at identical voltage ratings (30V Vdss) and share the same 6-SMD, flat leads package geometry. Applications requiring continuous current above 4.5A require circuit redesign or thermal management modifications.

Q: What are the package compatibility considerations?

A: Both the MCH6436-TL-E (6-MCPH) and RF6E045AJTCR (TUMT6) are 6-SMD surface mount packages with flat leads. The physical footprint and pin configuration are compatible for PCB layout purposes. The RF6E045AJTCR is available in Cut Tape (CT) and Digi-Reel® packaging formats.

Q: How do the on-state resistance specifications compare?

A: The MCH6436-TL-E specifies 34mOhm maximum on-state resistance at 3A and 4.5V gate-source voltage. The RF6E045AJTCR specifies 23.7mOhm maximum on-state resistance at 4.5A and 4.5V gate-source voltage. The lower on-state resistance of the substitute part results in reduced conduction losses within its rated current envelope.

Q: Are both parts RoHS3 compliant?

A: Yes. Both the MCH6436-TL-E and RF6E045AJTCR are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for electronic component manufacturing and distribution.

Q: What is the moisture sensitivity level for both parts?

A: Both devices are rated MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage, handling, or assembly processes.

Q: Why is the MCH6436-TL-E discontinued?

A: The MCH6436-TL-E is discontinued at DiGi Electronics. The RF6E045AJTCR from Rohm Semiconductor is an active product with current manufacturing and distribution support, providing supply chain continuity for new designs and production requirements.

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