Alpha Industries, Inc. [781] 935-5150

• Fax [617] 824-4579 • Email sales@alphaind.com • www.alphaind.com

1

Specifications subject to change without notice. 6/01A

Surface Mount Schottky

Quad Mixer Diodes

Features

s Tight Parameter Distribution

s Available as Ring Quads, Crossover

Quads, Bridge Quads and Octoquads

s 100% DC Tested

s Designed for High Volume Commercial

Applications

s Available in Tape and Reel Packaging

Description

Alpha Industries offers a series of low cost devices in a

SOT-143 package. They cover low, medium and high

barrier junctions as ring quads, crossover quads and

bridge quads. An octoquad ring is also offered for high

dynamic range applications. These devices are

constructed utilizing Alpha’s monolithic chip technology,

assuring uniformity of electrical characteristics for each

junction. The low capacitance of Alpha’s ring and

crossover quads are designed for double balanced mixer

applications covering wireless frequencies into C-band.

The bridge quads are designated for modulators and

frequency multiplier applications. These diodes are 100%

DC tested and deliver tight parameter distribution,

minimizing performance variability. They compliment

Alpha’s product line of Schottky singles and pairs available

in SC-70, SC-79, SOD-323, SOT-23 and SOT-143

packages. Available in tape and reel for pick and

place manufacturing.

Characteristic

Value

50 mA

75 mW

-65°C to +150°C

-65°C to +150°C

150°C

Soldering Temperature

260°C for 5 Seconds

ESD Human Body Model

Class 1B

Absolute Maximum Ratings

∆∆ V

F

@ 10

µµAC

J

@ 1 mA

@ 10 mA

Barrier

(V)

@ 0 V

@ 1 mA

(mV)

(

Ω

Ω)

(pF)

(mV)

SOT-143

Min.

Max.

Max.

Ring Quad

Crossover Quad

Bridge Quad

Octoquad

Low

2

0.3-0.5

200-270

10

8

o SMS3926-022 o SMS3926-023 o SMS3929-021

Marking: SE4

Marking: SE5

Marking: SQE

Medium

3

0.3-0.5

310-370

10

8

o SMS3927-023 o SMS3930-021

Marking: SJ5

Marking: SRE

High

4

0.3-0.5

520-580

10

8

o SMS3928-023 o SMS3931-021 o SMS3940-026

Marking: SK5

Marking: SSE

Marking: STG

Electrical Specifications at 25°C (Per Junction)

o Available through distribution.

All parameters are based upon a single junction.