ALPHA SMS3925-079 Datasheet

Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [e-mail] • 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).

Low Capacitance High Voltage Schottky Diode SMS3925-079

2 Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [e-mail] • 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