Fairchild BSS84 Typical Characteristics, Gate Charge Characteristics, Maximum Safe Operating Area

Typical Characteristics

BSS84

	5			VDS = -8V
(V)		ID = -0.10A			-25V
VOLTAGE	4				-30V
	3
SOURCE
	2
, GATE-	1
GS
-V
	0
	0	0.2	0.4	0.6	0.8	1

Qg, GATE CHARGE (nC)

Figure 7. Gate Charge Characteristics.

	1		100us
		RDS(ON) LIMIT
			1ms
(A)
			10ms
CURRENT	0.1		100ms
		1s	10s
		DC
,DRAIN	0.01	VGS = -5V
		SINGLE PULSE
D
-I		Rθ JA = 350oC/W
		TA = 25oC
	0.001
	1	10	100

-VDS, DRAIN-SOURCE VOLTAGE (V)

Figure 9. Maximum Safe Operating Area.

	100					f = 1 MHz
						VGS = 0 V
	80		CISS
(pF)
CAPACITANCE	60
	40
	20		COSS
	0		CRSS
	0	10	20	30	40	50

-VDS, DRAIN TO SOURCE VOLTAGE (V)

Figure 8. Capacitance Characteristics.

	5
(W)				SINGLE PULSE
				Rθ JA = 350°C/W
POWER	4
				TA = 25°C
TRANSIENT	3
	2
PEAK	1
P(pk),
	0
	0.01	0.1	1	10	100
			t1, TIME (sec)

Figure 10. Single Pulse Maximum

Power Dissipation.

NORMALIZED EFFECTIVETRANSIENT		1
			D = 0.5					Rθ JA(t) = r(t) * Rθ JA
	THERMAL RESISTANCE
		0.1	0.2					Rθ JA = 350oC/W
			0.1
			0.05					P(pk)
			0.02					t1
		0.01	0.01					t2
								TJ - TA = P * Rθ JA(t)
			SINGLE PULSE					Duty Cycle, D = t1 / t2
r(t),		0.001
		0.0001	0.001	0.01	0.1	1	10	100	1000
						t1, TIME (sec)

Figure 11. Transient Thermal Response Curve.

Thermal characterization performed using the conditions described in Note 1a.

Transient thermal response will change depending on the circuit board design.

BSS84 Rev B(W)