Fairchild PN4117, PN4118, PN4119, MMBF4117, MMBF4118 service manual

									MMBF4117
							PN4117
							PN4118		MMBF4118
							PN4119		MMBF4119

	G
		S
G	TO-92
S D	SOT-23	D

Mark: 61A / 61C / 61E

NOTE: Source & Drain

are interchangeable

N-Channel Switch

This device is designed for low current DC and audio applications. These devices provide excellent performance as input stages for sub-picoamp instrumentation or any high impedance signal sources. Sourced from Process 53.

Absolute Maximum Ratings* TA = 25°C unless otherwise noted

Symbol	Parameter	Value	Units
VDG	Drain-Gate Voltage	40	V
VGS	Gate-Source Voltage	- 40	V
IGF	Forward Gate Current	50	mA
TJ ,Tstg	Operating and Storage Junction Temperature Range	-55 to +150	° C

*These ratings are limiting values above which the serviceability of any semiconductor device may be impaired.

NOTES:

1)These ratings are based on a maximum junction temperature of 150 degrees C.

2)These are steady state limits. The factory should be consulted on applications involving pulsed or low duty cycle operations.

Thermal Characteristics TA = 25°C unless otherwise noted

Symbol	Characteristic		Max		Units
		PN4117-4119		*MMBF4117-4119
PD	Total Device Dissipation	350		225	mW
	Derate above 25° C	2.8		1.8	mW/° C
Rθ JC	Thermal Resistance, Junction to Case	125			° C/W
Rθ JA	Thermal Resistance, Junction to Ambient	357		556	° C/W

*Device mounted on FR-4 PCB 1.6" X 1.6" X 0.06."

4119 / 4118 / MMBF4117 / 4119 / 4118 / PN4117

1997 Fairchild Semiconductor Corporation

N-Channel Switch

(continued)

Electrical Characteristics TA = 25°C unless otherwise noted

Symbol	Parameter	Test Conditions		Min	Max	Units
OFF CHARACTERISTICS
V(BR)GSS	Gate-Source Breakdown Voltage	IG = - 1.0 A, VDS = 0		- 40		V
IGSS	Gate Reverse Current	VGS = - 20 V, VDS = 0			- 10	pA
		VGS = - 20 V, VDS = 0, TA = 150° C			- 25	nA
VGS(off)	Gate-Source Cutoff Voltage	VDS = - 10 V, ID = 1.0 nA	4117	- 0.6	- 1.8	V
			4118	- 1.0	- 3.0	V
			4119	- 2.0	- 6.0	V
ON CHARACTERISTICS
IDSS	Zero-Gate Voltage Drain Current*	VDS = 10 V, VGS = 0	4117	30	90	A
			4118	80	240	A
			4119	200	600	A
SMALL-SIGNAL CHARACTERISTICS
gfs	Common-Source Forward	VDS = 10 V VGS = 0, f= 1.0 kHz		70	210
	Transconductance		4117			mhos
			4118	80	250	mhos
			4119	100	330	mhos
goss	Common-Source Output	VDS = 10 V VGS = 0, f= 1.0 kHz			3.0
	Conductance		4117			mhos
			4118		5.0	mhos
			4119		10	mhos
Re(yfs)	Common-Source Forwad	VDS = 10 V, VGS = 0, f= 30 MHz		60
	Transconductance		4117			mhos
			4118	70		mhos
			4119	90		mhos
Ciss	Input Capacitance	VDS = 10 V, VGS = 0, f= 1.0 kHz			3.0	pF
Crss	Reverse Transfer Capacitance	VDS = 10 V, VGS = 0, f= 1.0 MHz,			1.5	pF

*Pulse Test: Pulse Width ≤ 300 s, Duty Cycle ≤ 1.0%

4119 / 4118 / MMBF4117 / 4119 / 4118 / PN4117