FDMC8327L-L701 Equivalent & Substitute Parts

Part Overview

The FDMC8327L-L701 is an N-Channel MOSFET manufactured by onsemi, designed for surface mount applications in the 8-MLP (3.3x3.3) package. This device operates at 40V drain-to-source voltage with continuous drain current ratings of 12A (Ta) and 14A (Tc), delivering power dissipation capabilities of 2.3W (Ta) and 30W (Tc). The part is currently designated as Last Time Buy, indicating discontinued production status. Identification of equivalent substitute components is necessary to ensure design continuity and procurement availability for applications requiring this specific performance profile.

Key Parameters

Parameter	Value	Unit
Drain to Source Voltage (Vdss)	40	V
Continuous Drain Current @ 25°C (Ta)	12	A
Continuous Drain Current @ 25°C (Tc)	14	A
On-State Drain Resistance (Rds On Max) @ 12A, 10V	9.7	mOhm
Gate Threshold Voltage (Vgs(th) Max) @ 250µA	3	V
Gate Charge (Qg Max) @ 10V	26	nC
Input Capacitance (Ciss Max) @ 20V	1850	pF
Power Dissipation (Ta)	2.3	W
Power Dissipation (Tc)	30	W
Operating Temperature Range	-55 to 150	°C
Package Type	8-PowerWDFN (3.3x3.3)	Surface Mount
Gate Voltage (Vgs Max)	±20	V
Drive Voltage (Max Rds On)	10	V
Drive Voltage (Min Rds On)	4.5	V

Substitute Part Grouping Explanation

Substitution of the FDMC8327L-L701 is determined by electrical and mechanical parameter equivalence within the N-Channel MOSFET category. The critical parameters establishing substitution eligibility are:

Electrical Parameters:

Drain to Source Voltage (Vdss): 40V
Continuous Drain Current: 12A (Ta) / 14A (Tc)
On-State Drain Resistance (Rds On): 9.7 mOhm @ 12A, 10V
Gate Threshold Voltage: 3V @ 250µA
Gate Charge: 26 nC @ 10V
Input Capacitance: 1850 pF @ 20V
Operating Temperature Range: -55°C to 150°C

Mechanical Parameters:

Package Type: 8-PowerWDFN (3.3x3.3)
Mounting Type: Surface Mount

Substitute parts must match all specified electrical parameters and maintain identical package geometry to ensure direct board-level compatibility without design modification.

Parameter Comparison

Parameter	FDMC8327L-L701 (onsemi)	FDMC8327L (Fairchild Semiconductor)
Manufacturer	onsemi	Fairchild Semiconductor
FET Type	N-Channel	N-Channel
Technology	MOSFET (Metal Oxide)	MOSFET (Metal Oxide)
Drain to Source Voltage (Vdss)	40 V	40 V
Continuous Drain Current (Ta)	12 A	12 A
Continuous Drain Current (Tc)	14 A	14 A
Rds On (Max) @ 12A, 10V	9.7 mOhm	9.7 mOhm
Vgs(th) (Max) @ 250µA	3 V	3 V
Gate Charge (Qg Max) @ 10V	26 nC	26 nC
Vgs (Max)	±20 V	±20 V
Input Capacitance (Ciss Max) @ 20V	1850 pF	1850 pF
Power Dissipation (Ta)	2.3 W	2.3 W
Power Dissipation (Tc)	30 W	30 W
Operating Temperature Range	-55°C to 150°C	-55°C to 150°C
Package Type	8-PowerWDFN (3.3x3.3)	8-PowerWDFN (3.3x3.3)
Mounting Type	Surface Mount	Surface Mount
Series	PowerTrench®	PowerTrench®
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected
Product Status	Last Time Buy	Active

Engineering Selection Recommendations

The FDMC8327L manufactured by Fairchild Semiconductor is a direct parametric equivalent to the FDMC8327L-L701. Both devices share identical electrical specifications across all measured parameters and are housed in the same 8-PowerWDFN (3.3x3.3) surface mount package.

Selection Basis:

The primary distinction between these parts is product status. The FDMC8327L-L701 (onsemi) is designated Last Time Buy, indicating end-of-life status with no future production. The FDMC8327L (Fairchild Semiconductor) maintains Active product status, ensuring continued availability and supply chain reliability.

Both parts maintain ROHS3 compliance and REACH Unaffected status, satisfying regulatory requirements for new designs and production environments. The electrical performance, thermal characteristics, and mechanical compatibility are identical, permitting direct substitution without circuit redesign or board layout modification.

Frequently Asked Questions (FAQ)

Q: Can the FDMC8327L (Fairchild Semiconductor) be used as a direct replacement for the FDMC8327L-L701 (onsemi)?

A: Yes. Both devices are electrically and mechanically identical. All electrical parameters, including Vdss, drain current, Rds On, gate charge, and input capacitance, match exactly. The 8-PowerWDFN (3.3x3.3) package geometry is identical, enabling direct board-level substitution without design modification.

Q: Why is the FDMC8327L-L701 designated as Last Time Buy?

A: Last Time Buy status indicates that onsemi has discontinued production of this part number. Existing inventory is available for final orders, but no future manufacturing is planned. Transition to an active equivalent part number is recommended for long-term supply assurance.

Q: Are there any compliance or certification differences between these parts?

A: No. Both the FDMC8327L-L701 and FDMC8327L maintain identical RoHS3 compliance and REACH Unaffected status. Both are suitable for applications requiring these regulatory certifications.

Q: What is the significance of the PowerTrench® series designation?

A: PowerTrench® is a proprietary MOSFET technology platform used by both onsemi and Fairchild Semiconductor. This designation indicates the use of advanced trench-based gate structure, which contributes to the low on-state resistance (9.7 mOhm) and efficient switching characteristics of both devices.

Q: Are the thermal characteristics identical between these parts?

A: Yes. Both devices specify identical power dissipation ratings of 2.3W (Ta) and 30W (Tc), as well as the same operating temperature range of -55°C to 150°C. Thermal management requirements and heat sink calculations remain unchanged when substituting between these parts.

Q: Does the package designation 8-PowerWDFN differ from 8-MLP?

A: The designations refer to the same physical package. 8-PowerWDFN (Power Wide Dual Flat No-Lead) and 8-MLP (Micro Lead Package) are equivalent nomenclature for the 3.3x3.3mm surface mount package used by both devices. No package conversion is required.

Q: What inventory status should be considered when selecting between these parts?

A: The FDMC8327L-L701 (onsemi) has 4139 pieces in stock with Last Time Buy status, indicating limited future availability. The FDMC8327L (Fairchild Semiconductor) has 3508 pieces in stock with Active product status, ensuring continued supply. For new designs or long-term production requirements, the Fairchild part is recommended.

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