PCAF-T18 datasheet, PDF - EEWORLD Datasheet

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PCAF-T18: DescriptionRF/Microwave Attenuator, 0 MHz - 12400 MHz RF/MICROWAVE FIXED ATTENUATOR; CategoryWireless rf/communication Radio frequency and microwave; File Size168KB，2 Pages; ManufacturerCobham PLC; Environmental Compliance

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PCAF-T18 Overview

RF/Microwave Attenuator, 0 MHz - 12400 MHz RF/MICROWAVE FIXED ATTENUATOR

PCAF-T18 Parametric

Parameter Name	Attribute value
Is it Rohs certified?	conform to
Maker	Cobham PLC
Reach Compliance Code	unknown
Nominal attenuation	18 dB
Characteristic impedance	50 Ω
structure	COMPONENT
Maximum input power (CW)	31.76 dBm
JESD-609 code	e4
Maximum operating frequency	12400 MHz
Minimum operating frequency
Maximum operating temperature	150 °C
Minimum operating temperature	-55 °C
RF/Microwave Device Types	FIXED ATTENUATOR
Terminal surface	Silver (Ag) - with Nickel (Ni) barrier
Maximum voltage standing wave ratio	1.35

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SERIES PCA, PCAA

ATTENUATORS, CHIP

Low Power – DC-18 GHz

FEATURES

•

Laser Trimmed

•

Temperature Stable

GENERAL INFORMATION

The PCA and PCAA Series consists of a laser trimmed distrib-

uted thin film element on an alumina ceramic substrate with

solderable terminals. Two sizes are available. The PCA size

operates to 12.4 GHz and the PCAA size operates to 18.0 GHz.

Both sizes are available with leads and wrap around conduc-

tors for ease of installation. The PCAF and PCAAF options are

designed for “flip-chip” application in lower frequency circuits.

PCA & PCAA SERIES DATA

•

Substrate: 96% Alumina

•

Solderable Terminals: Electroplated Silver over Nickel

•

Resistive Element: Proprietary Thin Film

•

Wrap around Ground Terminal available, “W” option

•

Wrap around-all terminals—“F” option

•

Standard values 1, 2, 3, 4, 5, 6, 10, 20 dB

•

Non-std. values available as special order

ORDERING INFORMATION

The attenuators listed are available in 1 dB increments from 1

through 20 dB. When ordering, to specify the correct part num-

ber for the desired attenuation value, select any of the series

listed and add the attenuation value desired to the basic series

designation.

Options (Note 4)

L = Lead/Tab (Gold Plated BeCu)

W = Wrap around ground only

F = Wrap around all terminals (flip-chip)

T = Tinned terminals (any terminal type) SN62

H = Tinned terminals ( any terminal type) SN96

G = Gold plated terminals

EXAMPLE:

PCA

PCAA

RoHS

GENERAL SPECIFICATIONS

Impedance

Operating Temperature

Attenuation Stability

50 Ohms

–55°C to +150°C

0.0001 dB/dB/°C

AVERAGE POWER DERATING CURVE

POWER DERATING

% OF RATED POWER

100

150°C

(x)

Option(s)

Value

Basic Option(s)

Series

EXAMPLES:

PCAW-T3

PCAAF-G3

NOTES

1. Performance of other dB values vary dependent on attenuation.

Contact factory for specifications for fractional dB values.

2. Performance is based on device mounted in matched 50 ohm line.

3. Rated power 1.5 watts input PCA, 100 mw PCAA.

4. Tinnning with SN96 “Lead Free” high temperature solder will maintain RoHS

compliance.

PERFORMANCE SPECIFICATIONS

Attenuation

Increments

(dB)

Note 1

1- 3

4-6

7 - 10

11 - 15

16 - 20

DC - 4 GHz

PCA, PCAA

Series

0.5

0.75

1.0

Attenuation Accuracy (dB) Note 2

4 - 8 GHz

8 - 12.4 GHz

12.4 - 18 GHz

PCA, PCAA

PCAA

Series

Series Only

0.5

+0.5

-3.0

+0.5

-4.0

0.5

0.75

+0.5

-4.0

—

0.5

0.75

1.0

—

DC - 4 GHz

PCA, PCAA

Series

1.25

VSWR (Typical) Note 2

4 - 8 GHz

8 - 12.4 GHz 12.4 - 18 GHz

PCA, PCAA

PCAA

Series

Series Only

1.35

1.50

—

1.50

—

KEY:

Inches [Millimeters] .XX ±.03 .XXX ±.010 [.X ±0.8 .XX ±0.25]

REV 10/10

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