Datasheet
Table Of Contents
- 1 Characteristics
- Table 1. Absolute ratings (Tamb = 25 C)
- Table 2. Thermal resistances
- Table 3. Electrical characteristics - parameter definitions (Tamb = 25 C)
- Table 4. Electrical characteristics - parameter values (Tamb = 25 C)
- Figure 1. Definition of IPP pulse
- Figure 2. Peak power dissipation versus initial junction temperature
- Figure 3. Peak pulse power versus exponential pulse duration (Tj initial = 25 C)
- Figure 4. Clamping voltage versus peak pulse current (exponential waveform, maximum values)
- Figure 5. Junction capacitance versus reverse applied voltage (typical values)
- Figure 6. Peak forward voltage drop versus peak forward current (typical values)
- Figure 7. Relative variation of thermal impedance junction to ambient versus pulse duration (printed ciruit board FR4, SCu = 1 cm2)
- Figure 8. Thermal resistance junction to ambient versus copper surface under each lead (printed circuit board FR4, eCu = 35 µm)
- Figure 9. Leakage current versus junction temperature (typical values)
- 2 Ordering information scheme
- 3 Package information
- 4 Ordering information
- 5 Revision history
SMM4F Characteristics
3/10
Figure 1. Definition of I
PP
pulse
Table 4. Electrical characteristics - parameter values (T
amb
= 25 °C)
Type
I
RM
max@V
RM
V
BR
@I
R
(1)
V
CL
@I
PP
10/1000 µs
R
D
(2)
10/1000 µs
V
CL
@I
PP
8/20 µs
R
D
(2)
8/20 µs
αT
(3)
25 °C 85 °C min typ max max max max
µA V V mA V A Ω VA Ω 10-4/°C
SMM4F5.0A 10 50 5.0 6.46 6.80 7.14 10 9.2 43.5 0.047 13.4 174 0.04 5.7
SMM4F6.0A 10 50 6.0 6.65 7.00 7.35 10 10.3 38.8 0.076 13.7 170 0.04 5.9
SMM4F6.5A 10 50 6.5 7.13 7.50 7.88 10 11.2 37.5 0.093 14.5 160 0.04 6.1
SMM4F8.5A 10 50 8.5 9.5 10.0 10.5 1 14.4 27.7 0.141 19.5 124 0.07 7.3
SMM4F10A 0.2 1 10 11.4 12.0 12.6 1 17.0 23.5 0.187 21.7 106 0.09 7.8
SMM4F12A 0.2 1 12 13.3 14.0 14.7 1 19.9 20.1 0.259 25.3 91 0.12 8.3
SMM4F13A 0.2 1 13 14.3 15.0 15.8 1 21.5 18.6 0.309 27.2 85 0.13 8.4
SMM4F15A 0.2 1 15 17.1 18.0 18.9 1 24.4 16.4 0.335 32.5 71 0.19 8.8
SMM4F18A 0.2 1 18 20.9 22.0 23.1 1 29.2 14.0 0.436 39.3 59 0.27 9.2
SMM4F20A 0.2 1 20 22.8 24.0 25.2 1 32.4 12.0 0.600 42.8 54 0.33 9.4
SMM4F24A 0.2 1 24 26.6 28.01 29.4 1 38.9 9.5 1.00 50 46 0.47 9.6
SMM4F26A 0.2 1 26 28.5 30.0 31.5 1 42.1 9.0 1.18 53.5 43 0.51 9.7
SMM4F28A 0.2 1 28 31.4 33.0 34.7 1 45.4 8.0 1.34 59.0 39 0.62 9.8
SMM4F33A 0.2 1 33 37.1 39.0 41.0 1 53.3 7.0 1.76 69.7 33 0.87 10.0
1. Pulse test: t
p
<50ms.
2. To calculate maximum clamping voltage at other surge currents, use the following formula V
CLmax
= R
D
x I
PP
+ V
BRmax
3. To calculate V
BR
versus junction temperature, use the following formula: V
BR
@ T
j
= V
BR
@ 25 °C x (1 + αT x (T
j
- 25))
100
50
%I
PP
t
r
t
p
0
t
Repetitive peak pulse current
tr = rise time (µs)
tp = pulse duration time (µs)