Delta Electronics H48SR manual Thermal Curves, Hot spot location unit in mm

THERMAL CURVES

		H48SR1R880(Standard) Output Current vs. Ambient Temperature and Air Velocity
Output Current(A)				@ Output Voltage 0.8V (Either Orientation)
88
80									600LFM
72
										500LFM
64
56		Natural								400LFM
	Convection
48
40			100LFM
32
24				200LFM
16						300LFM
8
0
0	10	20	30	40	50	60	70	80	90	100	110
									Ambient Temperature (℃)

Figure 18: Hot spot location (unit in mm)	Figure 19: Output current vs. ambient temperature and air
	velocity (Vin=48V / 75V, Vout=0.8V )

	H48SR1R880(Standard) Output Current vs. Ambient Temperature and Air Velocity
Output Current(A)			@ Output Voltage 1.8V (Either Orientation)
88
80									600LFM
72
									500LFM
64
56	Natural								400LFM
	Convection
48
40			100LFM
32
24				200LFM
16					300LFM
8
0
0	10	20	30	40	50	60	70	80	90	100
									Ambient Temperature (℃)

		H48SR1R880(Standard) Power Dissipation vs. Ambient Temperature and Air Velocity
Power Dissipation (Watts)					(Either Orientation)
24
21									600LFM
18										500LFM
15
		Natural								400LFM
	Convection
12
9			100LFM
6					200LFM
3						300LFM
0
0	10	20	30	40	50	60	70	80	90	100	110
									Ambient Temperature (℃)

Figure 20: Output current vs. ambient temperature and air velocity (Vin=48V / 75V, Vout=1.8V )

Figure 21: Power dissipation vs. ambient temperature and air velocity (Vin=48V / 75V, Vout=0.8V~1.8V )

7

DS_H48SR1R880_06272006