RFSP4TA0018G
Absorptive Coaxial SP4T Switch
0.02GHz-18GHz
Product Description
The RFSP4TA0018G is an absorptive coaxial single pole four throw switch
with a frequency range of 0.02 to 18GHz.
The power input of this switch is 30dBm Max. The Insertion Loss is 3.0dB
max with a typical isolation of 70dB
The product features fast switching speed, low insertion loss and highisolation. The working temperature of this product is between - 40 ℃ and +85 ℃Features••••••

Typical Applications•••••••••

TTL compatible driver included
Fast Switching Speed
Low Power Cold Switching
Insertion Loss 3.0dB
Isolation 70dB
50 Ohm Matched

Wireless Infrastructure
Military and Aerospace Applications
Test Instrumentation
Radar Systems
5G Wireless Communications
Microwave Radio Systems
TR Modules
Research and Development
Cellular Base Stations

Electrical Specifications, TA = +25°C, Vdd = +5V/5V, TTL = 0 / +5V
Parameter

Min

TypFrequency Range

0.02-6

Insertion Loss

1.8

Insertion Loss Temperature Coefficient

0.003

Isolation

60

MaxMinTypMaxMin6-12
2.5

3.060

Max12-18
3.5

4.10.003

75

Typ7060UnitsGHz4.5dB0.003

dB/ °C

65dB

Input VSWR

1.8

2.0

1.6

1.8

1.6

1.8:1

Output VSWR

1.8

2.0

1.6

1.8

1.6

1.8:130dBm

RF Input Power

3030

DC Power Dissipation

0.8

0.8

0.8

W

0.1dB Compression Point( P0.1dB )

30

30

30

dBm

IIP34140

39dBm

Switching Speed

250 Max.

ns

Bias Current (+5V/-5V)

160/50 Max.

mA

Weight0.07 Max.

Ibs

Impedance

50ΩInput / Output Connectors

SMA - Female
Epoxy Sealed (Standard)

Package
Hermetically Sealed (Optional)

Rev 3. 04-21-2022 | Subject to change without notice

RF-LAMBDA USA LLC: www.rflambda.com
Sales: sales@rflambda.com Technical: support@rflambda.com

RFSP4TA0018G
Absolute Maximum Ratings
Parameter

Rating

Biasing+5V±10%/-5V±10%* TTL pins cannot be connected to the negative voltage otherwise the internal driver will be damaged.

Environmental Specifications and Test Standards
Parameter

Description

Operational Temperature-40⁰C to +85⁰C(Case Temperature)

Storage Temperature-50⁰C to +105⁰C

Thermal Shock-40⁰C → +85⁰C(5 Cycles / 10 hours)**Random Vibration

MIL-STD-202G
Table 214-I, Test Condition Letter C
1.5 Hours Per Axis

High Temperature Burn In

Temperature +85⁰C for 72 HoursShock

1. Weight >20g, 50g half sine wave for 11ms, Speed variation 3.44m/s
2. Weight <=20g, 100g Half sine wave for 6ms, Speed variation 3.75m/s
3. Total 18 times (6 directions, 3 repetitions per direction).

AltitudeStandard: 30,000 Ft (Epoxy Sealed Controlled Environment)
Optional: Hermetically Sealed (60,000 ft. 1.0 PSI min)

Hermetically Sealed(Optional)

MIL-STD-883 (For Hermetically Sealed Units)*For vibration testing details please see additional information section.

Rev 3. 04-21-2022 | Subject to change without notice

RF-LAMBDA USA LLC: www.rflambda.com
Sales: sales@rflambda.com Technical: support@rflambda.com

8-40

6-50

5-60

2

M2-80
M3

M4-90

Input VSWR @+25℃

Ch1 Base Freq StartBase
10 MHzPwr 0 dBm
Trc3 S21 dB Mag 4.5 dB / Ref 0 dB

Stop 19 GHz
Cal

Ch1 Base Freq StartBase
10 MHzPwr 0 dBm

313.5
9.0

4.5
M210 dB / Ref 0 dB M3CalM1
M2
1 M1
Trc2 S12 dB Mag
M4 2
M3
0.00
M4
1.4630 UM1 20.000000 MHz -2.4688 dB
S12-4.5-10
1.4265 U
M2 6.000000 GHz -1.7258 dB
1.2020 U
M3 12.000000 GHz -3.0292 dB-20-9.01.2284 U
M4 18.000000 GHz -4.0710 dB-30-13.5

M1-40-18.0-50
Ch1 Base Freq StartBase
10 MHzPwr 0 dBm-60m
Cal

3

M4-50

5-60

44-70

33

2

M1

M2

2-80

M3

M2

M4

M3

M4-90

1
Ch1 Base Freq StartBase
10 Ch1MHzPwr Base0 dBm
Stop19 GHzFreq StartBase
10 MHzPwr0 dBm-70

Trc3 S21 dB Mag 4.5 dB / Ref 0 dB-80

S2118.0

Isolation
@+25℃
13.5
Stop 19 GHz

Stop 19 GHz

Ch1 Base Freq StartB

3Trc4 S22 SWR 1 U /Cal

M1 20.000000 MHz -2.4631 dB
M2 6.000000 GHz -1.7115 dB
M3 12.000000 GHz -3.0238 dB
M4 18.000000 GHz -4.0838 dB

S221099.08
M1
Trc1 S11 SWR 1 U / Ref 1 U Cal
1 Trc24.5S12 dB Mag 10 dB / Ref 0 dB Cal
27Trc4 S22 SWR 1 U / Ref 1 U
Cal40M2
M1 20.000000 MHz 11.624 U M1 S12
M1 20.000000
MHz -75.180 dB
M3S110.06M4
M120.000000
MHz1.3977
US2210-10
M2 6.000000 GHz 4.5430 U
M2 6.000000 GHz -94.625 dB
10M2 6.000000 GHz 1.3310 U-4.55
M3 12.000000
GHz 4.0207 U
M3 12.000000 GHz -74.017 dB
9 12.000000 GHz 1.1636
-20
M3
U9
•
M4
18.000000
GHz3.0185
U
M4
18.000000
GHz-62.850
dB-9.04
M4
8 18.000000 GHz 1.1089 U-30
8-13.537-407M1 2M2-18.0
Trc1 S11 SWR 800 mU/ Ref 1 U Cal
1 M1
Trc2 S12 dB MagM210 dB / Ref 0 dB Cal
M3 26-5060M4
1
M1 20.000000M2MHz 1.3999 U
M1 20.000000 MHz -2.7039 dB
S11S12Ch110 MHzPwr 0 dBm
Stop 19 GHz Ch1 Base Freq StartB
5-60Base Freq StartBase
58200
M2 6.000000 GHz 1.5307 U M3 -10
M2 6.000000 GHz -1.6502 dB
M1
11/17/2017,
12:58
AM-3.9899 dB M3
4
M3
18.000000
GHz1.4168
UM3
18.000000
GHz4-70
M47400-2036600
M1

Stop 19 GHz-40

5Output VSWR @+25℃

0000 MHz -2.4631 dB
0000 GHz -1.7115 dB
0000 GHz -3.0238 dB0000 GHz -4.0838 dB-301

Stop 19 GHz

Ch1 Base Freq StartBase
10 MHzPwr 0 dBm-206-90

Stop 19 GHz

1 M1
Trc2 S12 dB MagM210
0S12-101.4630 U
1.4265 U
1.2020 U
1.2284 U

611/17/2017, 12:58 AM

M4

Stop 19 GHz

Trc4 S22 SWR 1 U / Ref 1 U Cal
4
Trc1 S11 SWR 1 U / Ref 1 U Cal
M1 20.000000 MHz 1.3977 U
S22
M1 20.000000 MHz
S1110M2
U10 6.000000 GHz 1.3310
M2 6.000000 GHz
M312.000000
GHz1.1636
U9M312.000000 GHz
9 18.000000 GHz 1.1089 U
M4•
M418.000000 GHz
8877M1 20.000000 MHz -2.4631 dB
M2 6.000000 GHz -1.7115 dB
M3 12.000000 GHz -3.0238 dB
M4 18.000000 GHz -4.0838 dB

S2118.0

RFSP4TA0018G-70Insertion
Loss @+25℃
1M3m-30

73M1

M3 12.000000 GHz -3.0292 dB
M4 18.000000 GHz -4.0710 dB-20

4Typical Performance
Plots

00000 MHz00000 GHz00000 GHz00000 GHz

M3

M3 12.000000 GHz 1.2020 U• M4 18.000000 GHz 1.2284 U

925800

3M22M3

M4-30-80-40-90

15000-50
1Ch1 Base Freq StartBase
10Ch1MHzPwrBase
0 dBmStop19 GHzFreq StartBase
10 MHzPwr
0 dBm
4200
-603400

Trc3 S21 dB Mag 4.5 dB / Ref 0 dB

2600

S2118.0
M21800 Loss @-40℃
Insertion
13.51000
Ch1 Base Freq StartBase
10 MHzPwr
9.0 0 dBm

13.5

Stop 19 GHz
41.2961 U
1.2066 U
1.0385 U
1.0471 U

Trc1Ref
S111 M1
Trc2 S12 dB MagM210 d
7 1 U SWR
Trc4 S22 SWR 800 mU/
Cal 800 mU/ Ref 1 U 4 Cal0
M1 20.000000
MHz 1.3999 U
S11S12M16 20.000000 MHz 1.4156
US228200-10M2 6.000000
GHz 1.5307 U8200M2 6.000000 GHz 1.4097
U5
M3 18.000000
GHz 1.4168 U
M3 18.000000 GHz 1.2410
U7400-207400

46600
35800
5800
M1 2M2-18.0
M3
M1
M2
M3 5000
M45000
M3
14200
4200Base Freq StartBase
Ch1 Base Freq StartBase
10 MHzPwr 0 dBm
Stop 19 GHz Ch110 MHz
Pwr 0 dBm
3400
3400
11/17/2017, 12:58 AM

-30

6600

-13.5

4.50.0

3-9.0

9.0
M1

Cal0.020.000000 MHz -2.2756 dB•M1
M2 6.000000 GHz -1.6363 dB-4.5
M3 18.000000 GHz -3.9965 dB

S2118.0

Ch1 Base Freq StartBase
10 MHzPwr 0 dBm

Cal3 Trc4 S22 SWR 1 U / Ref 1 U Cal-70
M1 20.000000
M1 20.000000 MHz
S22-80MHz -76.374 dB
10M2 M36.000000 GHz -93.737 dB
M2 6.000000 GHz-90
M3 12.000000 GHz -74.199 dBInput 9VSWR @-40℃ M3 12.000000 GHz
M4 18.000000 GHz -62.886 dB
M4 18.000000 GHz
Stop 19 GHz Ch1 Base Freq StartBase
10 MHzPwr8 0 dBm
Stop 19 GHz

M1

4.5 0 dB
Trc3 S21 dB Mag 4.5 dB / Ref

Stop 19 GHz

M2

M2-4.5-9.0-13.52600
M1-18.0
Ch1 Base Freq StartBase
10 MHzPwr 0 dBm

Stop 19 GHz

1800-40

M4
Stop 19 GHz

1800-60-70

2600
M2 M1-50-80
M2M3M31000
1000
Ch1 Base Freq StartBase
10MHzPwr0 dBm
StopCh1BaseFreq StartBase
10MHz
Pwr19 0GHzdBm-90

Stop 19 GHz

Ch1 Base Freq StartBas
1

3

Trc4 S22 SWR 800 mU

9/29/2017, 6:56 AM
Trc3 S21 dB Mag 4.5 dB / Ref 0 dB
S21
18.0
13.5
9.0

Rev 3. 04-21-2022 | Subject to change without notice

4.5Cal•M1 20.000000 MHz -2.2756 dB
M2 6.000000 GHz -1.6363 dB
M3 18.000000 GHz -3.9965 dB

S228200
7400
6600

RF-LAMBDA USA LLC: www.rflambda.com

5800
M2
Technical: support@rflambda.com
M1 Sales: sales@rflambda.com
0.05000
M3

6.000000 GHz 1.5307 U
8.000000 GHz 1.4168 U

M2 6.000000 GHz -1.6502 dB
M3 18.000000 GHz -3.9899 dB-20-30-40

RFSP4TA0018G-50-60

Typical Performance
Plots-70-80
M3

Output VSWR @-40℃dBm
dB-90

Stop 19 GHz
Cal3.000000 MHz -2.2756 dB.000000 GHz -1.6363 dB.000000 GHz -3.9965 dB

1 Trc2 S12 dB Mag 10 dB / Ref 0 dB Cal20
M1 20.000000
MHz 16.187 U
M1 20.000000 MHz -73.973 dB
M1 20.000000 MHz 1.4156
US11S128200 6.000000 GHz 1.4097-10
M2 U6.000000 GHz 5.7821 U
M2 6.000000 GHz -86.915 dB
M2
M3 18.000000
GHz 3.0316 U
M3 18.000000 GHz -62.900 dB
M3
U740018.000000 GHz 1.2410-207400
Trc1 S11 SWR 1 U / Ref 1 U Cal
1 M1
Trc2 S12 dB MagM210 dB / Ref 0 dB Cal
M3 26600-306600
M20M1 20.000000 MHz 1.3780 U
M1 20.000000 MHz -2.8856 dB
S11S125800
5800-4010-10
M2 6.000000 GHz 1.4837 U
M2 6.000000 GHz -1.8604 dB
5000
5000-50 18.000000 GHz -4.1968 dB
M318.000000
GHz1.4832
U
M3
9-20
M34200
4200
-60
8-30
M3 M13400
3400
-70
7-40
2600
M22600
-80
6-50
M1
M2
M3
1800
1800
-90
5-60
S228200

M310001000-70
Ch1 4Base Freq StartBase
10Ch1MHzPwrBase
0 dBm
Stop19 GHz
Freq StartBase
10 MHzPwr0 dBm
Stop 19 GHz Ch1 Base Freq StartBase
10 MHzPwr 0 dBm
Stop 19 GHz
3-80
Trc3 S21 dB Mag 4.5 dB / RefM30 dB Cal3 Trc4 S22 SWR 800 mU/ Ref 1 U Cal4M2
M1 2-90•M1 20.000000 MHz -71.741 dB
M1 20.000000 MHz 1.2944 U
S21S22118.08200
6.000000dBInput
6.000000 GHz 1.1444 U
Insertion@+85℃
Ch1 Base Loss
Freq Start
Base
10 MHzPwr 0 dBm
StopM219 GHz
Ch1 GHz
Base-86.272
Freq Start
Base
10 MHzPwrVSWR0 dBm @+85℃
Stop M219 GHz
M3 18.000000 GHz -63.024 dB
M3 18.000000 GHz 1.1298 U
13.57400
Trc3 S21 dB Mag 4.5 dB / Ref 0 dB Cal
3 Trc4 S22 SWR 1 U / Ref
1 US11Cal
4Trc1
SWR 1 U / Ref 1 U Cal
1 M1
Trc2 S12 dB MagM
9.066000•M1 20.000000 MHz -2.5164 dB
M1 20.000000 MHz 1.3946
US21S22
M120.000000
MHz1.3780
US11S1218.0
104.5 6.000000 GHz -1.8457 dB
5800 6.000000 GHz 1.3684
M2M2
U10-10M2 6.000000 GHz 1.4837 U
M3 18.000000 GHz -4.2025 dB
M3 18.000000 GHz 1.2226
UM3 18.000000
GHz 1.4832 U
13.5
90.0
5000
9-20dBm

Stop 19 GHz

9.0-4.5-9.00 dB Cal
1 M1
Trc24.5
S12 dB MagM210 dB / Ref
M3 2M2M1 00.00.000000 MHz 1.3780 U
M120.000000
MHz-2.8856dB
M3-13.5S12-106.000000 GHz 1.4837 U
M2 6.000000 GHz -1.8604 dB-4.5-18.018.000000 GHz
M1 M3
M2 -4.1968 dB
8.000000 GHz 1.4832 U-20Cal-9.0-30-40-18.0

M1-50-60 Base Freq StartBase
Ch110 MHzPwr 0 dBm

84200-30

773400-40662600-505

M1 1800
5Stop 19 GHz

32M3Trc3 S21 dB Mag 4.5 dB / Ref 0 dB
S2118.0-90

Output VSWR @+85℃
Stop 19 GHz
Cal3-70

Stop 19 GHz-80

M3-90

Stop 19 GHz

Ch1 Base Freq St

3Trc4 S22 SWR 1Cal•M1 20.000000 MHz -2.5164 dB
M2 6.000000 GHz -1.8457 dB
M3 18.000000 GHz -4.2025 dB

S22
10Isolation
@+85℃
13.5
Ch1 Base Freq StartBase
10 MHzPwr 0 dBm
Stop 19 GHz
9.0
M1
Trc1
1 Trc2 S12 dB Mag 10 dB / Ref 0 dB Cal
2
Trc4 S22 SWR 1 U / Ref
1 U S11CalSWR 1 U / Ref 1 U Cal
404.5
M120.000000
MHz11.046
UM120.000000
MHz-70.616
dBS11M1 20.000000 MHz 1.3946 U
M2S22
M1S1210-100.0
M2 U6.000000 GHz 5.1289 U
M2 6.000000 GHz -87.451M3dB10
M2 6.000000 GHz 1.3684
M3 18.000000
GHz 3.0714 U
M3 18.000000 GHz -62.718 dB-20
M39 18.000000 GHz 1.2226
U-4.5
98-30-9.08

M3

M1
Stop 19 GHz-60

M3

11Freq StartBase
10MHzPwr0 dBm
Ch1 Base Freq StartBase
10Ch1MHzPwrBase
0 dBm
Stop19 GHz-80
M3

M241000
Stop 19 GHz Ch1 Base Freq StartBase
10 MHzPwr 0 dBm
3M2
M2 M1 2M3-70
9/29/2017,7:46 AM.000000 MHz -2.5164 dB.000000 GHz -1.8457 dB.000000 GHz -4.2025 dBdBm

9/29/2017, 6:56 AM84

Ch1 Base Freq StartBase
10 MHzPwr 0 dBm-13.5dBm

dBIsolation @-40℃

Ch1 Base Freq StartBase
10 MHzPwr 0 dBm
Stop 19 GHz
M1
Trc4 S22 SWR 800 mU/Trc1
Ref S11
1 U SWR
Cal 800 mU/ Ref 1 U4 Cal

77665544332

M229.0Rev 3. 04-21-2022 | Subject to change without notice
4.576543-50-18.0

M2

M1

M3

M1 -60Ch1 Base Freq StartBase
10 MHzPwr 0 dBm-70

M3Stop 19 GHz

2-80-90

Stop 19 GHzCal3•M1 20.000000 MHz -92.545 dB
M2 6.000000 GHz -87.313 dB
M3 18.000000 GHz -62.766 dB

Ch1 Base Freq StartBase
10 MHzPwr 0 dBm
Trc4 S22 SWR 1 U / Ref 1 U
S22
1098CalM

1
Ch1 Base Freq St

9/29/2017, 7:46 M2AM

M3

Trc3 S21 dB Mag 4.5 dB / Ref 0 dB

13.58-40-13.5

1
1Freq StartBase
10 MHzPwr0 dBm
Ch1 Base Freq StartBase
10Ch1MHzPwrBase
0 dBm
Stop19 GHzS2118.09Stop 19 GHz
4M1 20.000000 MHz 1.3024 U
M2 6.000000 GHz 1.1515 U
M3 18.000000 GHz 1.0850 U

RF-LAMBDA USA LLC: www.rflambda.com

Sales:7 sales@rflambda.com Technical: support@rflambda.com

RFSP4TA0018G
Typical Performance Plots

Insertion Loss Temperature Coefficient

Insertion Loss vs. Temperature

IIP3

Switching Speed

Switching Speed

Rev 3. 04-21-2022 | Subject to change without notice

RF-LAMBDA USA LLC: www.rflambda.com
Sales: sales@rflambda.com Technical: support@rflambda.com

RFSP4TA0018G
Outline Drawing[X401]

52 [2.05]12.5 [0.49]

18 [0.71]
9 [0.35]

48 [1.89]

GND

C4C3C22 [0.08]

C1 -5V +5V

J0RF-Lambda

2- 2.8[0.11]
THRU

RFSP4TA0018G
F:0.02-18GHz
SN:XXXXXXXXXX

J4J3J2J1

3 [0.12]

13 [0.51]
39 [1.54]

Truth Table
Low(0)=0~0.8V

TTL Control Voltage
THRESHOLD

High(1)=2.8~5V

Control Input TTL

Signal Path StateC4C3C2C11111OFF

1110J0-J11101J0-J21011J0-J30111J0-J40000Not UsedControl Pin Customization Available Upon Request

Notes:
1. Package Material: Aluminum2.
Plating: Gold Plated
3. All dimensions are in millimeters [inches].
4. Housing Tolerances±0.1 [0.004]unless otherwise specified.
5. Standard torque wrench must be used to secure RF connectors.

Additional Information
Documentation

Webpage

ESD Policy

https://rflambda.com/pdf/rflambda_esd_control.pdf

Connector Torque Specifications

https://www.rflambda.com/pdf/Torque_Specifications.pdf

Random Vibration Test Standard

https://www.rflambda.com/pdf/rflambda_random_vibration_MIL-STD-202G.pdf

Rev 3. 04-21-2022 | Subject to change without notice

RF-LAMBDA USA LLC: www.rflambda.com
Sales: sales@rflambda.com Technical: support@rflambda.com

RFSP4TA0018G
Ordering Information
Part Number

Modification

Description

RFSP4TA0018G

Standard

0.02-18GHz SP4T PIN Diode Switch

Important Notice
The information contained herein is believed to be reliable. RF-Lambda makes no warranties regarding the information contained herein.
RF-Lambda assumes no responsibility or liability whatsoever for any of the information contained herein. RF-Lambda assumes no responsibility orliability whatsoever for the use of the information contained herein. The information contained herein is provided "AS IS, WHERE IS" and with all faults,
and the entire risk associated with such information is entirely with the user. All information contained herein is subject to change without notice.
Customers should obtain and verify the latest relevant information before placing orders for RF-Lambda products. The information contained herein or
any use of such information does not grant, explicitly or implicitly, to any party any patent rights, licenses, or any other intellectual property rights,
whether with regard to such information itself or anything described by such information.
RF-Lambda products are not warranted or authorized for use as critical components in medical, life-saving, or life sustaining applications, or otherapplications where a failure would reasonably be expected to cause severe personal injury or death.

Rev 3. 04-21-2022 | Subject to change without notice

RF-LAMBDA USA LLC: www.rflambda.com
Sales: sales@rflambda.com Technical: support@rflambda.com