LESHAN RADIO COMPANY, LTD.
G19–1/2
1
3
2
MMBD914LT1
MAXIMUM RATINGS
Rating Symbol Value Unit
Reverse Voltage V R100 Vdc
Forward Current I F200 mAdc
Peak Forward Surge Current I FM(surge) 500 mAdc
THERMAL CHARACTERISTICS
Characteristic Symbol Max Unit
Total Device Dissipation FR– 5 Board (1) P D 225 m W
T A = 25°C
Derate abo ve 25°C 1.8 mW/°C
Thermal Resistance, Junction to Ambient R θ JA 556 °C/W
Total Device Dissipation P D300 mW
Alumina Substrate, (2) T A = 25°C
Derate above 25°C 2.4 mW/°C
Thermal Resistance, Junction to Ambient R θ JA 417 °C/W
Junction and Storage Temperature T J , T stg –55 to +150 °C
DEVICE MARKING
MMBD914L T1 = 5D
ELECTRICAL CHARACTERISTICS (T A = 25°C unless otherwise noted)
Characteristic Symbol Min Max Unit
OFF CHARACTERISTICS
Reverse Breakdown Voltage V (BR) 100 — Vdc
(I R = 100 µAdc)
Reverse Voltage Leakage Current I R
(V R = 20 Vdc) — 25 nAdc
(V R = 75 Vdc) — 5.0 µAdc
Diode Capacitance C T— 4.0 pF
(V R = 0, f = 1.0 MHz)
Forward Voltage V F — 1.0 Vdc
(I F = 10 mAdc)
Reverse Recovery Time t rr — 4.0 ns
(I F = I R = 10 mAdc) (Figure 1)
1. FR–5 = 1.0 x 0.75 x 0.062 in.
2. Alumina = 0.4 x 0.3 x 0.024 in. 99.5% alumina.
High-Speed Switching Diode
3
CATHODE 1
ANODE
CASE 318–08, STYLE 8
SOT– 23 (TO–236AB)
LESHAN RADIO COMPANY, LTD.
G19–2/2
Notes: 1. A 2.0 kΩ variable resistor adjusted for a Forward Current (I F ) of 10mA.
Notes: 2. Input pulse is adjusted so I R(peak) is equal to 10mA.
Notes: 3. t p » t rr
Figure 1. Recovery Time Equivalent Test Circuit
+10 V 2.0 k
820 Ω
100 µH0.1µF
DUT
0.1 µF
50 Ω OUTPUT
PULSE
GENERATOR
t r
50 Ω INPUT
SAMPLING
OSCILLOSCOPE
t pt
10%
90%
I F
I R
t rr t
i R(REC) = 1.0 mA
OUTPUT PULSE
(I F = I R = 10 mA; MEASURED
at i R(REC) = 1.0 mA)
INPUT SIGNAL
I F
V R
MMBD914LT1
I F , FORWARD CURRENT (mA)
I R, REVERSE CURRENT ( µA)
10
1.0
0.1
0.01
0.001 01020304050
100
10
1.0
0.1 0.2 0.4 0.6 0.8 1.0 1.2
V R , REVERSE VOLT AGE (VOLTS)
Figure 3. Leakage Current
V F , FOR WARD VOLTAGE (VOLTS)
Figure 2. Forward Voltage
T
A
= –40°C
T
A
= 85°C
T
A
= 25°C
T
A
=125°C
T
A
=150°C
T
A
=85°C
T
A
=55°C
T
A
=25°C
0.68
0.64
0.60
0.56
0.520 2.0 4.0 6.0 8.0
V R , REVERSE VOLT AGE (VOLTS)
Figure 4. Capacitance
C D , DIODE CAP ACIT ANCE (pF)
