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Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [email protected] • www.alphaind.com 1
Specifications subject to change without notice. 8/99A
Low Capacitance High Voltage
Schottky Diode
Features
■ Silicon Schottky Diode for Detector
Applications
■ Ultra Small SC-79 Package
■ Designed for High Volume, Low Cost
Applications
■ Available in Tape and Reel Packaging
SMS3925-079
Description
The SMS3925-079 is a 40 V, 0.6 pF RF Schottky diode
designed for use as a level detector in wireless handsets
and for general purpose switching applications. The
SMS3925-079 is packaged in the surface mount
miniature SC-79 package and is designated for low cost,
high volume applications.
Characteristic Value
Reverse Voltage (VR) 40 V
Forward Current - 1 mS Pulse (IF)1 A
Forward Current - Steady State (IF) 50 mA
Power Dissipation (PD) 250 mW
Storage Temperature (TST) -65°C to +150°C
Operating Temperature (TOP) -65°C to +150°C
Junction Temperature (TJ) 150°C
Electrostatic Discharge (ESD) - Class 1B
Human Body Model (HBM)
Absolute Maximum Ratings
Preliminary
Parameter Condition Min. Typ. Max. Unit
Reverse Current (IR)V
R
= 40 V 10 uA
Capacitance (CT)
1
VR= 0 V, F = 1 MHz 0.48 0.6 pF
Forward Voltage (VF)I
F
= 1 mA 0.57 0.62 0.67 V
Electrical Specifications at 25°C
1. Capacitance is total capacitance (CT), junction capacitance (CJ) + package capacitance (CP).
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Low Capacitance High Voltage Schottky Diode SMS3925-079
2 Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [email protected] • www.alphaind.com
Specifications subject to change without notice. 8/99A
Total Capacitance vs. Reverse Voltage
Reverse Voltage (V)
Capacitance (pF)
0
0.1
0.2
0.3
0.4
0.5
0.6
0 5 10 15
Typical Performance Data
0.060 (1.50 mm) MIN.
0.067 (1.70 mm) MAX.
0.010
(0.25 mm) MIN.
0.014
(0.35 mm) MAX.
0.043 (1.10 mm) MIN.
0.051 (1.30 mm) MAX.
0.020
(0.50 mm) MIN.
0.028
(0.70 mm) MAX.
0.003
(0.07 mm) MIN.
0.008
(0.20 mm) MAX.
10˚ MAX.
10˚ MAX.
0.028
(0.70 mm) MIN.
0.035
(0.90 mm) MAX.
0.006 (0.15 mm) MIN.
CATHODE
INDICATOR
12
SC-79
Parameter Units SMS3925
IS A 1.8E-09
R
S
Ω 5.4
N - 1.7
TT S 8E-11
C
J0
pF 0.36
M - 0.24
E
G
eV 0.69
XTI - 2
F
C
- 0.5
B
V
V58
I
BV
A 1.00E-05
V
J
V 0.800
SPICE Model Parameters
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