SPB80N06S2-07 N-Channel MOSFET Equivalent & Substitute Parts

Part Overview

The SPB80N06S2-07 is an N-Channel 55V 80A surface mount MOSFET manufactured by Infineon Technologies in the OptiMOS™ series. This device is rated for 250W power dissipation and operates across a temperature range of -55°C to 175°C. The part is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity. Substitute parts must maintain compatibility across drain-source voltage, continuous drain current, on-resistance characteristics, and packaging format to ensure direct replacement capability.

Key Parameters

Parameter	SPB80N06S2-07	Unit
FET Type	N-Channel	—
Drain to Source Voltage (Vdss)	55	V
Continuous Drain Current (Id) @ 25°C	80	A
Rds On (Max) @ Id, Vgs	6.6	mOhm @ 68A, 10V
Gate Threshold Voltage Vgs(th) (Max)	4	V @ 180µA
Gate Charge (Qg) (Max)	110	nC @ 10V
Power Dissipation (Max)	250	W
Operating Temperature Range	-55 to 175	°C
Package Type	TO-263-3 (D2PAK)	—
Mounting Type	Surface Mount	—
Product Status	Obsolete	—

Substitute Part Grouping Explanation

Substitution eligibility for the SPB80N06S2-07 is determined by the following critical parameters:

Primary Compatibility Criteria:

Drain-Source Voltage (Vdss): 55V minimum (allows up to 60V for margin)
Continuous Drain Current (Id): 80A minimum at 25°C
On-Resistance (Rds On): 6.6 mOhm maximum at rated conditions
Package: TO-263-3 / D2PAK surface mount format
Operating Temperature: -55°C to 175°C minimum range

Substitute Parts Identified:

Group 1 – Direct Voltage & Current Match (55V, 80A):

STB85NF55T4 (STMicroelectronics, Active, RoHS3)
STB140NF55T4 (STMicroelectronics, Active, RoHS3)

Group 2 – Higher Current Rating (55V, 75A–100A):

BUK9608-55B,118 (Nexperia, Active, RoHS3, AEC-Q101)
BUK6607-55C,118 (NXP/Nexperia, Active, AEC-Q101)

Group 3 – Slightly Higher Voltage (60V, 92A):

PSMN7R6-60BS,118 (Nexperia, Active, RoHS3)

All substitute parts maintain the D2PAK surface mount package, operate within the required temperature range, and provide equivalent or superior electrical performance within the specified parameter envelope.

Parameter Comparison

Parameter	SPB80N06S2-07	STB85NF55T4	STB140NF55T4	BUK9608-55B,118	BUK6607-55C,118	PSMN7R6-60BS,118	Unit
Vdss	55	55	55	55	55	60	V
Id @ 25°C	80	80	80	75	100	92	A
Rds On (Max)	6.6	8.0	8.0	7.0	6.5	7.8	mOhm
Vgs(th) (Max)	4.0	4.0	4.0	2.0	2.8	4.0	V
Gate Charge (Qg)	110	150	142	45	82	38.7	nC
Power Dissipation (Max)	250	300	300	203	158	149	W
Operating Temp Range	-55 to 175	-55 to 175	-55 to 175	-55 to 175	-55 to 175	-55 to 175	°C
Package	D2PAK	D2PAK	D2PAK	D2PAK	D2PAK	D2PAK	—
RoHS Status	Non-compliant	RoHS3	RoHS3	RoHS3	Not specified	RoHS3	—
Product Status	Obsolete	Active	Active	Active	Active	Active	—

Engineering Selection Recommendations

STB85NF55T4 (STMicroelectronics)

This part provides the closest electrical match to the SPB80N06S2-07 with identical 55V/80A ratings. The STripFET™ II series device is actively manufactured, RoHS3 compliant, and rated for 300W power dissipation. The slightly higher on-resistance (8.0 mOhm vs. 6.6 mOhm) and gate charge (150 nC vs. 110 nC) are within acceptable engineering margins for most applications. Recommended as the primary substitute for direct replacement.

STB140NF55T4 (STMicroelectronics)

Functionally equivalent to STB85NF55T4 with identical electrical specifications. Both devices are from the same STripFET™ II series and offer equivalent performance. Selection between these two STMicroelectronics parts depends on inventory availability and packaging format (Tape & Reel vs. Cut Tape).

BUK6607-55C,118 (NXP/Nexperia)

Offers superior on-resistance (6.5 mOhm) matching the original part more closely, with higher continuous drain current (100A). This part carries AEC-Q101 automotive qualification and is suitable for applications requiring enhanced current handling. Gate charge is lower (82 nC), reducing driver power requirements.

BUK9608-55B,118 (Nexperia)

Provides active product status with RoHS3 compliance and AEC-Q101 qualification. The 75A continuous current rating is slightly below the original 80A specification but remains acceptable for most applications. Lower gate charge (45 nC @ 5V) offers improved switching efficiency. Extensive inventory availability (44,196 pcs) supports production continuity.

PSMN7R6-60BS,118 (Nexperia)

Suitable for applications where slightly elevated voltage rating (60V vs. 55V) is acceptable. The 92A continuous current and lower gate charge (38.7 nC) provide performance advantages. RoHS3 compliant and actively manufactured. Recommended only when 60V rating does not conflict with circuit design constraints.

Selection Priority:

STB85NF55T4 or STB140NF55T4 for closest electrical equivalence
BUK6607-55C,118 for superior on-resistance matching
BUK9608-55B,118 for high-volume availability and automotive qualification
PSMN7R6-60BS,118 for applications tolerating 60V rating

Frequently Asked Questions (FAQ)

Q: Can the SPB80N06S2-07 be directly replaced with any of these substitute parts?

A: Yes, all listed substitute parts are compatible within the D2PAK surface mount package format and maintain the required electrical performance envelope. Direct PCB-level replacement is possible without circuit modification for the STMicroelectronics and Nexperia parts listed. Verify gate drive voltage compatibility (all parts support 10V drive) and thermal management requirements before implementation.

Q: What is the significance of the on-resistance (Rds On) difference between the original and substitutes?

A: The SPB80N06S2-07 specifies 6.6 mOhm maximum on-resistance. Substitute parts range from 6.5 mOhm (BUK6607-55C,118) to 8.0 mOhm (STB85NF55T4, STB140NF55T4). Higher on-resistance increases power dissipation during conduction. For applications operating at or near 80A continuous current, verify thermal design accommodates the substitute part's power dissipation rating. Lower on-resistance substitutes (BUK6607-55C,118 at 6.5 mOhm) provide improved thermal performance.

Q: Are there package compatibility concerns?

A: All substitute parts use the D2PAK (TO-263-3) surface mount package, ensuring mechanical and electrical compatibility with existing PCB layouts. One exception: STH110N7F6-2 uses H2PAK-2 packaging and is not recommended for direct replacement due to different pin configuration and footprint requirements.

Q: What is the impact of gate charge differences?

A: Gate charge (Qg) varies from 38.7 nC (PSMN7R6-60BS,118) to 150 nC (STB85NF55T4). Higher gate charge requires greater driver current and energy during switching transitions. For applications with marginal gate drive capability, lower gate charge substitutes (BUK9608-55B,118 at 45 nC, PSMN7R6-60BS,118 at 38.7 nC) reduce driver stress. For standard gate drive circuits, this difference is typically not critical.

Q: Which substitute is recommended for new designs?

A: BUK9608-55B,118 or BUK6607-55C,118 are recommended for new designs. Both are actively manufactured, carry AEC-Q101 automotive qualification, and offer RoHS3 compliance. BUK9608-55B,118 provides exceptional inventory availability (44,196 pcs), supporting production continuity. BUK6607-55C,118 offers superior on-resistance matching (6.5 mOhm) for thermally constrained applications.

Q: Can the SPB80N06S2-07 be used in applications designed for the substitute parts?

A: The SPB80N06S2-07 is classified as obsolete and is not recommended for new designs. However, it can function in applications designed for the listed substitutes provided the circuit accommodates its specific electrical characteristics (6.6 mOhm on-resistance, 110 nC gate charge, 250W power dissipation). Existing inventory (6,805 pcs) may support legacy production requirements only.

Q: What compliance considerations apply to substitute selection?

A: The original SPB80N06S2-07 is RoHS non-compliant. All recommended substitutes (STB85NF55T4, STB140NF55T4, BUK9608-55B,118, PSMN7R6-60BS,118) are RoHS3 compliant. For automotive applications, BUK9608-55B,118 and BUK6607-55C,118 carry AEC-Q101 qualification. Verify compliance requirements for your specific application before final part selection.

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