SMP1321-085LF Datasheet, PDF (1/7 Pages) Skyworks Solutions Inc. – Surface-Mount PIN Diode for Switch and Attenuator Applications

DATA SHEET
SMP1321-085LF: Surface-Mount PIN Diode for Switch and
Attenuator Applications
Applications
 Low-loss, high-power switches
 Low-distortion attenuators
Anode
(Pin 1)
Anode
(Pin 3)
Features
 Low thermal resistance: 59 °C/W
 Suitable component for RF switches or attenuators
 Low capacitance: 0.27 pF typical @ 30 V
 Low distortion performance
 QFN (3-pin, 2 x 2 mm) package
(MSL1, 260 C per JEDEC J-STD-020)
Skyworks Green^TM products are compliant with
all applicable legislation and are halogen-free.
For additional information, refer to Skyworks
Definition of Green^TM, document number
SQ04–0074.
Cathode
(Pin 2, Exposed Paddle)
Figure 1. SMP1321-085LF Block Diagram
Description
The SMP1321-085LF is a surface-mountable, low-capacitance
silicon PIN diode designed as a shunt connected PIN diode for
high-power, high-volume switch and attenuator applications from
10 MHz to beyond 6 GHz.
Maximum resistance at 10 mA is 1.5 Ω, and maximum
capacitance at 30 V is 0.35 pF. The combination of low junction
capacitance, low parasitic inductance, low thermal resistance,
and nominal 15 μm I-region width, makes the SMP1321-085LF
useful in large signal switches and attenuator applications.
The device has a 1.4 W dissipation power rating, making it
capable of handling more than 35 W continuous wave (CW) and
350 W peak (1 μs pulse, 1 percent duty cycle, TC = 85 °C) in a
shunt-connected transmit/receive (T/R) switch.
Design information for high-power switches can be found in the
Skyworks Application Note, Design With PIN Diodes (document
number 200312).
A block diagram of the SMP1321-085LF is shown in Figure 1.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [e-mail] • www.skyworksinc.com
203498A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • March 12, 2015
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