Silicon Step Recovery Diodes (SRD)
The Aeroflex / Metelics Silicon Mesa Beam Lead Step Recovery diodes provide
low capacitance, very fast transition times, and low inductance along with low parasitic capacitance compared to packaged or chip devices.
The fast transition times make these devices useful for fast sampling gate
drivers, frequency multipliers and comb generators to 40 GHz and beyond.
- Low Inductance
- Rugged Beam Lead construction
- Transition times down to 30
picoseconds in 50 system
- Oxide and polymide passivation
Spice Model
Beam Lead
|
Model
|
VBR
Volts
|
CT pF
|
t nS
|
TT pS
|
Package
|
MIN
|
MAX
|
TYP
|
MAX
|
TYP
|
TYP
|
MAX
|
MMDB30-B11
|
14
|
25
|
0.15
|
0.25
|
4
|
30
|
38
|
B11 |
MMDB35-B11
|
16
|
30
|
0.13
|
0.20
|
4
|
35
|
45
|
B11
|
MMDB45-B11
|
25
|
40
|
0.11
|
0.20
|
8
|
45
|
58
|
B11
|
Test Conditions
|
IR = 10 A
|
VR = 6V
F = 1 MHz
|
IF= 10 mA
IR = 6 mA
|
IF= 3 mA
VR = 7 V
|
|
Packaged
|
Model
|
VBR
Volts
|
CT pF
|
t nS
|
TT pS
|
Cp pF
|
Lp nH
|
Package
|
MIN
|
MIN
|
MAX
|
MIN
|
TYP
|
TYP
|
MAX
|
TYP
|
TYP
|
MMDB30-E28 / 28X
|
14
|
0.28
|
0.36
|
1.0
|
4.0
|
30
|
38
|
0.08
|
0.4
|
E28 / 28X
|
MMDB30-0402
|
14
|
0.25
|
0.32
|
1.0
|
4.0
|
30
|
38
|
0.05
|
0.2
|
0402
|
MMDB30-0805-2
|
14
|
0.26
|
0.33
|
1.0
|
4.0
|
30
|
38
|
0.06
|
0.4
|
0805-2
|
MMDB35-E28 / 28X
|
16
|
0.25
|
0.31
|
1.0
|
4.0
|
35
|
45
|
0.08
|
0.4
|
E28 / 28X
|
MMDB35-0402
|
16
|
0.22
|
0.28
|
1.0
|
4.0
|
35
|
45
|
0.05
|
0.2
|
0402
|
MMDB35-0805-2
|
16
|
0.23
|
0.29
|
1.0
|
4.0
|
35
|
45
|
0.06
|
0.4
|
0805-2
|
MMDB45-E28 / 28X
|
25
|
0.24
|
0.31
|
3.0
|
8.0
|
45
|
58
|
0.08
|
0.4
|
E28 / 28X
|
MMDB45-0402
|
25
|
0.21
|
0.28
|
3.0
|
8.0
|
45
|
58
|
0.05
|
0.2
|
0402
|
MMDB45-0805-2
|
25
|
0.22
|
0.29
|
3.0
|
8.0
|
45
|
58
|
0.06
|
0.4
|
0805-2
|
Test Conditions
|
IR = 10 A
|
VR = 6V
F = 1 MHz
|
If= 10 mA
IR = 6 mA measured at 50% recovery
|
If= 3 mA
VR = 7 V
|
|
|
| |
|
