PARAMETRIC
ADVANCED

Desktop PCs

NEC Electronics offers a variety of small, low on-resistance Power MOSFETs mounted on motherboards. Lower on-resistance and a smaller gate electric charge than conventional products has been achieved by adopting the 0.25 µm process "UMOS4". Mounted on small packages TO-251 and TO-252, the Power MOSFETs are suitable for CPU power supplies on motherboards.
ESD measures are becoming indispensable in the desktop and PC area, where the trend for high-clock CPUs and high-speed interfaces is accelerating every year. NEC Electronics offers the NSDA and NNCD series as ESD protective devices. The NSDA series is suitable for use in high-speed interfaces, and its low terminal capacitance gives ESD protection without affecting high-speed data transfer. The NNCD series that employs a flat lead package is suitable for ESD protection for small devices that require high-density mounting. The maximum height of the package is 0.5 mm. Mounting area can be reduced by 50% for two pins and by 38% for five pins (our super small-sized mold ratio).

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Roadmap and Circuit Diagram

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Power MOSFET

Type No. Config MOSFET VD SS [V] VG SS [V] ID (DC) [A] PT (W) Tc=25° Ron1 (mohm) typ /max at 10V Ron2 (mohm) typ /max at 4.5V Ciss (pF) typ QG (nC) typ 2SK3573 TO-220 TO=263 20 ±20 ±83 105 2.9/4.0 3.8/6.0 4000 68 2SK3572 20 ±20 ±80 52 4.4/5.7 7.4/9.9 1700 32 2SK3571 20 ±20 ±48 40 7/9 10/16 1100 21 2SK3570 20 ±20 ±48 29 8.2/12 12.3/22 930 23 2SK3295 20 ±20 ±35 35 13/18 21/27 720 16 2SK3575 30 ±20 ±83 105 3.3/4.5 4.3/6.4 3700 70 2SK3574 30 ±20 ±48 29 10.1/13.5 15/24 940 22 2SK3659 Iso.TO-220 20 ±20 ±65 25 4.6/5.7 7.1/9.9 1700 32 2SK3991 TO-251 TO=252 2025 ±20 ±30 21 10.3/13 17.4/30.2* 830 17 2SK3992 25 ±20 ±64 38 3.4/4.8 5.9/10.2* 2900 56 2SK3993 25 ±20 ±64 40 2.7/3.8 4.1/7.8* 4770 88 2SK3918 25 ±20 ±48 29 5.9/7.5 11.1/22.2* 1300 28 2SK3919 25 ±20 ±64 36 4.5/5.6 6.8/13.7* 2050 42 2SK3507 TO=252 30 ±16 ±22 20 28/45 46/76 360 8.5 2SK3638 TO-252 20 ±20 ±64 36 6.8/8.5 10/15 1100 22 2SK3639 20 ±20 ±64 40 4.4/5.5 5.8/8.5 2400 45 2SK3640 30 ±16 ±64 20 15/21 24/40 570 14.0 2SK3641 30 ±20 ±64 29 11/14 17/25 930 22 2SK3642 30 ±20 ±64 36 7.6/9.5 10.8/16 1100 23 2SK3643 30 ±20 ±64 40 4.7/6 6.3/9 2400 48

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Surge Absorber Devices for ESD (electro-static discharge) Protection

Part number	NSAD500F	NSAD500S	NSAD500H
Elements	2 diodes	2 diodes	4 diodes
Package	SC-59	SC-70	SC-88A

Maximum Rating (TA=25℃)

Item	Symbol	Rrating	Unit	Remark
Power dissipation	P	200 (S-type:150)	mW	total
Junction temperature	Tj	150	°C	-
Strage temperature	Tstg	-55～ +150	°C	-

Electrical Characteristics (TA=25℃ (A to K1, K2, K3, K4))

Break over Voltage VBO (V)		Capacitance Ct (pF)		Reverse Current IF (uA)		ESD [*1] (kV)		<reference> Forward Break over Voltage
Min	TYP	TYP	Condition	MAX	VF(V)	MIN	Condition
5.3	8	3.5	VR=0V f=1MHz	0.1	3.0	8	C=150pF R=330Ω Contact discharge	10V TYP

[*1] Biased upon with IEC 61000-4-2.

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Noise Clipping Diodes (NNCD) for ESD Protection

Guarantee an ESD withstand capability of not less than 15 kV and feature low terminal capacitance that allows protection of high-speed signal lines.

Type		Surface Mounting Type
Allowable loss		200mW
ESD withstand capability		8kVmin			30kVmin
Capacity		10pFtyp			20pFtyp
Series		NNCD[　]LG	NNCD[　]LH	NNCD[　]RL	NNCD[　]MF	NNCD[　]MG
Breakdown voltage	5.6V	NNCD5.6LG	NNCD5.6LH	-	-	NNCD5.6MG
	6.2V	NNCD6.2LG	NNCD6.2LH	-	NNCD6.2MF	NNCD6.2MG
	6.8V	NNCD6.8RG	NNCD6.8RH	NNCD6.8RL	-	NNCD6.8MG
Package		SC-74A (Quad)	SC-88A (Quad)	5pin×SOF (Quad)	SC-59 (Dual)	SC-74A (Quad)

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Applications

USB2.0[480Mbps]	IEEE1394a[400Mbps]
Specifications of input data Cin=CDr+Ct<10pF Voltage Low level=-50mV High level=+600mV	Specifications of input data Cin=4pF(max) Voltage Low level=0 to 0.7V High level=2.4V to Vcc+10%

Introduction to Key Devices