Surface-mount
Table S2-B.Thermal Derating for
Lead-free
Surface-mount Devices [Hold Current (A) at Ambient Temperature (°C)]
continued
Maximum Ambient Temperature
Part Number
Lead-free SMD Series
Size 5050 mm/2018 mils
SMD030F-2018
SMD050F-2018
SMD100F-2018
SMD150F-2018
SMD200F-2018
Lead-free SMD Series
Size 7555 mm/2920 mils
SMD030F
SMD050F
SMD075F
SMD075F/60
SMD100F
SMD100F/33
SMD125F
SMD260F
SMD300F
Lead-free SMD2 Series
Size 8763 mm/3425 mils
SMD150F
SMD150F/33
SMD185F
SMD200F
SMD250F
0.48
0.86
1.59
2.21
2.81
0.42
0.77
1.43
1.97
2.54
0.35
0.70
1.20
1.70
2.27
0.30
0.55
1.10
1.50
2.00
0.28
0.53
1.03
1.43
1.93
0.24
0.48
0.94
1.26
1.73
0.21
0.43
0.85
1.15
1.59
0.17
0.38
0.72
1.00
1.46
0.15
0.36
0.69
0.91
1.32
0.12
0.29
0.61
0.79
1.19
0.10
0.26
0.57
0.73
1.12
—
—
—
—
—
-40˚C
-20˚C
0˚C
20˚C
25˚C
40˚C
50˚C
60˚C
70˚C
80˚C
85˚C
125˚C
0.44
0.73
1.11
1.11
1.59
1.48
1.89
3.82
4.13
0.39
0.65
0.99
0.99
1.43
1.35
1.68
3.41
3.75
0.32
0.55
0.84
0.84
1.20
1.20
1.50
2.90
3.30
0.30
0.50
0.75
0.75
1.10
1.10
1.25
2.60
3.00
0.28
0.47
0.71
0.71
1.03
1.06
1.21
2.45
2.87
0.26
0.43
0.63
0.63
0.94
0.98
1.04
2.19
2.62
0.23
0.39
0.57
0.57
0.85
0.91
0.93
1.99
2.43
0.19
0.33
0.49
0.49
0.72
0.83
0.85
1.70
2.25
0.18
0.31
0.45
0.45
0.69
0.79
0.71
1.58
2.00
0.17
0.28
0.39
0.39
0.61
0.73
0.61
1.38
1.87
0.15
0.26
0.36
0.36
0.57
0.69
0.55
1.28
1.78
—
—
—
—
—
—
—
—
—
2.30
2.30
2.54
3.01
3.72
2.04
2.04
2.29
2.67
3.31
1.80
1.80
2.20
2.30
2.80
1.50
1.50
1.85
2.00
2.50
1.45
1.45
1.80
1.90
2.35
1.23
1.23
1.55
1.66
2.09
1.10
1.10
1.43
1.50
1.89
0.99
0.99
1.31
1.30
1.60
0.83
0.83
1.19
1.16
1.48
0.70
0.70
1.06
0.99
1.28
0.63
0.63
1.00
0.91
1.18
—
—
—
—
—
4
Thermal Derating Curves for Surface-mount Devices*
A = nanoSMD/microSMD/miniSMD & SMD
B = miniSMDE190
C = SMDH160
Figure S1. Thermal Derating Curve
Figure S1. Thermal Derating Curve
200
Percent of rated hold and trip current
180
160
140
120
100
80
60
40
20
0
– 60
– 40
– 20
0
20
40
60
80
B
C
A
B
A
C
100
Ambient Temperature (°C)
*Refer to Telecom and Networking section for thermal derating of Telecom parts.
Raychem Circuit Protection
PolySwitch Surface-mount Resettable Devices
195
RAYTHEON [ RAYTHEON COMPANY ]
