BUK7Y3R5-40H PCB Symbol, Footprint & ECAD Model

N-channel 40 V, 3.5 mΩ standard level MOSFET in LFPAK56

Automotive qualified N-channel MOSFET using the latest Trench 9 low ohmic superjunction technology, housed in a robust LFPAK56 package. This product has been fully designed and qualified to meet AEC-Q101 requirements delivering high performance and endurance.

N-channel 40 V, 3.5 mΩ standard level MOSFET in LFPAK56

Buy from Nexperia

SKU	Stock*	MOQ	Price per unit**	Quantity

Buy from distributors

Seller	SKU	Stock	MOQ		1	10	100	1,000	10,000	Purchase

Seller	SKU	Stock	MOQ		1	10	100	1,000	10,000	Purchase

Seller	SKU	Stock	MOQ		1	10	100	1,000	10,000	Purchase

Seller	SKU	Stock	MOQ		1	10	100	1,000	10,000	Purchase

* Stock values are subject to change
** Displayed price per unit is based on small quantity orders
*** Authorized resellers for overstock, mature, and discontinued products which are warranted for reliability by the reseller, no longer by Nexperia

Features

Fully automotive qualified to AEC-Q101:
- 175 °C rating suitable for thermally demanding environments
Trench 9 Superjunction technology:
- Reduced cell pitch enables enhanced power density and efficiency with lower R_DSon in same footprint
- Improved SOA and avalanche capability compared to standard TrenchMOS
- Tight V_GS(th) limits enable easy paralleling of MOSFETs
LFPAK Gull Wing leads:
- High Board Level Reliability absorbing mechanical stress during thermal cycling, unlike traditional QFN packages
- Visual (AOI) soldering inspection, no need for expensive x-ray equipment
- Easy solder wetting for good mechanical solder joint
LFPAK copper clip technology:
- Improved reliability, with reduced R_th and R_DSon
- Increases maximum current capability and improved current spreading

Target applications

12 V automotive systems
Motors, lamps and solenoid control
Start-Stop micro-hybrid applications
Transmission control
Ultra high performance power switching

Parametrics

Type number	Package version	Package name	Product status	Channel type	Number of transistors	V_DS [max] (V)	R_DSon [max] @ V_GS = 10 V (mΩ)	T_j [max] (°C)	I_D [max] (A)	Q_GD [typ] (nC)	Q_G(tot) [typ] @ V_GS = 10 V (nC)	P_tot [max] (W)	Q_r [typ] (nC)	V_GSth [typ] (V)	Automotive qualified	C_iss [typ] (pF)	C_oss [typ] (pF)	Date
BUK7Y3R5-40H	SOT669	LFPAK56; Power-SO8	Production	N	1	40	3.5	175	120	6	31	115	16	3	Y	2294	682	2017-07-04

Package

Type number	Orderable part number, (Ordering code (12NC))	Status	Marking	Package	Outline version	Reflow-/Wave soldering	Packing
BUK7Y3R5-40H	BUK7Y3R5-40HX ( 9346 600 66115 )	Active	73H540	LFPAK56; Power-SO8 (SOT669)	SOT669		Reel 7" Q1/T1

Quality, reliability & chemical content

Type number	Orderable part number	Chemical content	RoHS / RHF	MSL	MSL leadfree
BUK7Y3R5-40H	BUK7Y3R5-40HX	BUK7Y3R5-40H		1	1

Quality and reliability disclaimer

Documentation (18)

File name	Title	Type	Date
BUK7Y3R5-40H	N-channel 40 V, 3.5 mΩ standard level MOSFET in LFPAK56	Data sheet	2018-05-11
AN10273	Power MOSFET single-shot and repetitive avalanche ruggedness rating	Application note	2015-12-10
AN10874	LFPAK MOSFET thermal design guide	Application note	2018-04-24
AN11113	LFPAK MOSFET thermal design guide - Part 2	Application note	2018-04-24
AN11158	Understanding power MOSFET data sheet parameters	Application note	2014-02-04
AN11160	Designing RC Snubbers	Application note	2012-10-01
AN11156	Using Power MOSFET Zth Curves	Application note	2012-10-10
AN11243	Failure signature of Electrical Overstress on Power MOSFETs	Application note	2017-12-21
AN11261	Using RC Thermal Models	Application note	2019-11-05
AN11599	Using power MOSFETs in parallel	Application note	2016-07-13
AN90001	Designing in MOSFETs for safe and reliable gate-drive operation	Application note	2017-05-05
Nexperia_document_leaflet_LFPAK56_201805	The automotive Power-SO8 that packs a punch	Leaflet	2018-07-03
BUK7Y3R5-40H	BUK7Y3R5-40H	SPICE model	2017-08-11
TN00008	Power MOSFET frequently asked questions and answers	Technical note	2018-09-12
BUK7Y3R5-40H_RCthermal	BUK7Y3R5-40H_RCthermal	Thermal design	2017-08-11
nexperia-engineers-handbook	The Power MOSFET Application Handbook	User manual	2017-04-04
SOT669_115	LFPAK56; Reel pack; SMD, 7" Q1/T1 standard product orientation Orderable part number ending ,115 or X Ordering code (12NC) ending 115	Packing	2016-09-09
SOT669	plastic, single-ended surface-mounted package; 4 terminals	Outline drawing	2018-07-10

Support

If you are in need of design/technical support, let us know and fill in the answer form, we'll get back to you shortly.

Models

File name	Title	Type	Date
BUK7Y3R5-40H	BUK7Y3R5-40H	SPICE model	2017-08-11
BUK7Y3R5-40H_RCthermal	BUK7Y3R5-40H_RCthermal	Thermal design	2017-08-11

Ordering, pricing & availability

Type number	Orderable part number	Ordering code (12NC)	Packing	Buy online
BUK7Y3R5-40H	BUK7Y3R5-40HX	934660066115	Reel 7" Q1/T1	Order product

Sample

As a Nexperia customer you can order samples via our sales organization or directly via our Online Sample Store: https://extranet.nexperia.com.

Sample orders normally take 2-4 days for delivery.

If you do not have a direct account with Nexperia our network of global and regional distributors is available and equipped to support you with Nexperia samples.