Sanyo 2SK1578 Specifications

Ordering number:EN4178A

N-Channel Junction FET

2SK1578

Capacitor Microphone Applications

Features

Package Dimensions

·Especially suited for use in audio, telephone capacitor microphones.

·Excellent voltage characteristics.

·Excellent transient characteristics.

·Adoption of FBET process.

Specifications

Absolute Maximum Ratings at Ta = 25˚C

unit:mm

2034A

[2SK1578]

4.0

2.2

		3.0
0.4		1.8
0.5
		0.6
0.4		15.0
		0.4
1	2	3
1.3		1.3
0.7		0.7
	3.0
	3.8nom

1 : Source

2 : Gate

3 : Drain

SANYO : SPA

Parameter	Symbol	Conditions	Ratings	Unit
Gate-to-Drain Voltage	VGDO		–20	V
Gate Current	IG		10	mA
Drain Current	ID		1	mA
Allowable Power Dissipation	PD		100	mW
Channel Temperature	Tj		150	˚C
Storage Temperature	Tstg		–55 to +150	˚C

Electrical Characteristics at Ta = 25˚C

	Parameter	Symbol	Conditions		Ratings		Unit
				min	typ	max
	Gate-to-Drain Breakdown Voltage	V(BR)GDO	IG=–100µA	–20			V
	Cutoff Voltage	VGS(off)	VDS=5V, ID=1µA	–0.2	–0.6	–1.5	V
	Zero-Gate Votlage Drain Current	IDSS	VDS=5V, VGS=0	100*		800*	µA
	Forward Transfer Admittance	| yfs |	VDS=5V, VGS=0, f=1MHz	0.4	1.2		mS
	Input Capacitance	Ciss	VDS=5V, VGS=0, f=1MHz		4.1		pF
	Reverse Transfer Capacitance	Crss	VDS=5V, VGS=0, f=1MHz		0.88		pF

* : The 2SK1578 is classified by IDSS as follows : (unit : A)

100 A 170 150 B 240 210 C 350 320 D 480 440 E 800

Any and all SANYO products described or contained herein do not have specifications that can handle applications that require extremely high levels of reliability, such as life-support systems, aircraft’s control systems, or other applications whose failure can be reasonably expected to result in serious physical and/or material damage. Consult with your SANYO representative nearest you before using any SANYO products described or contained herein in such applications.

SANYO assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges,or other parameters) listed in products specifications of any and all SANYO products described or contained herein.

SANYO Electric Co.,Ltd. Semiconductor Company

TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN

61599TH (KT)/72297TS (KOTO)/12094TH (KOTO) 8-7215 No.4178–1/4

2SK1578

Parameter	Symbol	Conditions		Ratings		Unit
			min	typ	max
[Ta=25°C, VCC=4.5V, RL=1kΩ, CIN=15pF, See specified Test Circuit.]
Voltage Gain	GV	VIN=10mV, f=1kHz		–3.0		dB
Reduced Voltage Characteristics	GVV	VIN=10mV, f=1kHz, VCC=4.5 → 1.5V		–1.2	–3.5	dB
Frequency Characteristics	GVf	f=1kHz to 110Hz			–1.0	dB
Input Resistance	ZIN	f=1kHz	25			mΩ
Output Resistance	ZO	f=1kHz			700	Ω
Total Harmonic Distortion	THD	VIN=10mV, f=1kHz		1.0		%
Output Noise Voltage	VNO	VIN=0, A curve			–110	dB

Test Circuit

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