© 2009 TELEDYNE RELAYS (800) 284-7007 • www.teledynerelays.com GA152 Page 1
GA152\102009\Q4
SERIES
GA152
HIGH REPEATABILITY
ULTRAMINIATURE
BROADBAND
ATTENUATOR RELAYS
DESCRIPTION
The Series GA152 highly repeatable ultraminiature
attenuator relays are designed for attenuating RF signals in
50-ohm systems over a frequency range from DC to 5 GHz.
Their low profile and small grid spacing makes them ideal
for use when packaging density is a prime consideration.
The GA152 relays eliminate the need for additional external
resistors/attenuators.
These single section, switchable attenuator relays have
an internal matched thin film attenuator pad in a “Pi”
configuration. Relays are available in a fixed increment
of 20 dB.
The GA152 attenuator relay features:
• High repeatability.
• Unique uni-frame motor design which provides high
magnetic efficiency and mechanical rigidity.
• Minimum mass components and welded construction
for maximum resistance to shock and vibration.
• Advanced cleaning techniques which assures internal
cleanliness.
• Gold plated, precious metal contacts, which provide
excellent intermodulation performance.
• Flat amplitude vs. frequency response.
• High isolation between control and signal path.
• Stable attenuation vs. temperature.
• Excellent phase linearity.
• Highly resistant to ESD.
Patent No. 5,315,273
SERIES
DESIGNATION RELAY TYPE
GA152 Attenuator relay series
ENVIRONMENTAL AND
PHYSICAL SPECIFICATIONS
Temperature
(Ambient)
Storage –65°C to +125°C
Operating –55°C to +85°C
Vibration
(General Note 1) 10 g’s to 500 Hz
Shock
(General Note 1)
30 g’s,
6ms half sine
Enclosure Hermetically sealed
Weight 0.11 oz. (3.2g) max.
SCHEMATIC DIAGRAM
3
2
1
5
6
7
Terminal view. Case ground.
GA152 Page 2 SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE © 2009 TELEDYNE RELAYS
GA152\102009\Q4
TELEDYNE RELAYS PART NUMBERING SYSTEM
FOR GA152 ATTENUATOR RELAYS
GA152 – 20* – XX
PARAMETER MINIMUM TYPICAL MAXIMUM UNITS
Operating Frequency (Note 2) 0.0 5.0 GHz
Power (Notes 5 and 6) 1.0 Watt
Impedance 50 Ohms
SERIES GA152
GENERAL PERFORMANCE (–55°C to + 85°C, unless otherwise speci ed)
ELECTRICAL SPECIFICATION (–55°C to +85°C, unless otherwise speci ed)
PART NUMBER (Note 7) GA152-dB-5 GA152-dB-12 GA152-dB-15 GA152-dB-26
Coil Voltage Vdc (Note 6) Nom. 5121526.5
Max. 5.8 16.0 20.0 32.0
Coil Resistance Ohms ±20% @25°C 50 390 610 1560
Pick-up Voltage Vdc Max. @25°C 3.8 9.0 11.3 18.0
Switching Time ms (Note 8) Max. 4.0
Typ. 2.0
Insulation Resistance 1,000 MΩ typical (all mutually isolated points)
Dielectric Strength 300 VRMS / 60 Hz typical (at sea level)
OUTLINE DIMENSIONS
GENERAL NOTES
1. Contacts will exhibit no contact chatter in excess of
10 μs or transfer in excess of 1 μs.
2. Relays may be operated at higher frequencies with
reduced RF performance.
3. For optimal RF performance, solder case to RF ground
plane.
4. Attenuation values shown are with reference to the
through path (low loss state).
5. Power handling for case temperatures of –55°C to
+55°C is 1 Watt. Derate power handling 25 mW/°C
above +55°C. Case measurement point is adjacent to
the relay tab.
6. Do not operate coil at maximum coil voltage
continuously.
7. Insert attenuation value, see part numbering system.
8. Switching time includes bounce.
9. The slash and characters appearing after the slash are
not marked on the relay.
10. Unless otherwise speci ed, relays will be supplied with
either gold-plated or solder-coated leads.
Series
Designator
Attenuation
Value (dB)
Nominal
Coil Voltage
*Contact factory for additional
attenuation values
.475 MAX
[ 12.06 ]
.335 MAX
[ 8.51 ]
© 2009 TELEDYNE RELAYS (800) 284-7007 • www.teledynerelays.com GA152 Page 3
GA152\102009\Q4
SERIES GA152
TYPICAL RF PERFORMANCE (Notes 3 and 4)
RF PERFORMANCE (–55°C to +85°C, unless otherwise speci ed) (Notes 2, 3 and 4)
PARAMETER MINIMUM TYPICAL MAXIMUM UNITS CONDITION
Insertion Loss
0.1 0.25 dB DC–1 GHz
0.2 0.35 dB 1–2 GHz
0.3 .055 dB 2–3 GHz
See graph 3–5 GHz
VSWR (Through path)
1.10 1.20 DC–1 GHz
1.20 1.25 1–2 GHz
1.25 1.30 2–3 GHz
See graph 3–5 GHz
VSWR (Attenuated path)
1.20 1.25 DC–1 GHz
1.30 1.35 1–2 GHz
1.40 1.45 2–3 GHz
See graph 3–5 GHz
ATTENUATION MINIMUM TYPICAL MAXIMUM UNITS CONDITION
20
19.8 20.0 20.2 dB DC–1 GHz
19.6 20.0 20.4 dB 1–2 GHz
19.0 20.0 21.0 dB 2–3 GHz
See graph 3–5 GHz
Contact factory for additional attenuation values
-20.5
-20.0
-19.5
-19.0
-18.5
-17.5
-18.0
0 1 2 3 4 5
A152 Attenuated Path Insertion Loss
Frequency (GHz)
Attenuation (dB)
1.0
1.1
1.2
1.4
012345
A152 Attenuated Path Reflection
VSWR
Frequency (GHz)
-0.8
-0.6
-0.4
-0.2
0
012345
A152 Through-Path Insertion Loss
Frequency (GHz)
Insertion Loss (dB)
1.0
1.1
1.2
1.3
1.4
1.6
1.5
012345
A152 Through-Path Reflection
VSWR
Frequency (GHz)
GA152 Page 4 SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE © 2009 TELEDYNE RELAYS
GA152\102009\Q4
SERIES GA152
TYPICAL RF INSERTION LOSS REPEATABILITY CHARACTERISTICS (Notes 1, 3 and 4)
RF INSERTION LOSS REPEATABILITY NOTES
1. RF Performance shown is for A152. GA152 RF Data is TBD. RF Performance is the same or better than A152.
2. Test conditions: a. Fixture: Custom plug-in test  xture.
b. Relay header is in contact with, but not soldered to, ground plane.
c. Test performed at room ambient temperature.
d. Contact signal level: 10 dBm.
3. Data presented herein represents typical characteristics and is not intended for use as speci cation limits.
4. Insertion loss repeatability measured over frequency range from 3 MHz to 5 GHz.
-0.1
0
0.1
0.2
0.0 0.3 0.6 0.9 1.2 1.5 1.8 2.1 2.4 2.7 3.0 3.3 3.6 3.9 4.2 4.5 4.8 5.0
A152 Insertion Loss Repeatability
(Through Path)
Frequency (GHz)
IL Repeatability (dB)
• Data represents 1 sample of A152-20-5
• Relay was cycled at 5 Hz and IL was measured at every 10K cycles
up to 1M cycles. Data presented is with respect to the first sweep.
• Relay was tested on a fixture made by Microtest Inc.
• HP 8719D VNA was used for measurements
• Test was performed at room temperature.
• RF input power level 10dBm
A152 Insertion Loss Repeatability
(Attenuated Path)
-0.2
-0.1
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
0.0 0.3 0.6 0.9 1.2 1.5 1.8 2.1 2.4 2.7 3.0 3.3 3.6 3.9 4.2 4.5 4.8 5.0
Frequency (GHz)
IL Repeatability (dB)
• Data represents 1 sample of A152-20-5
• Relay was cycled at 5 Hz and IL was measured at every 10K cycles
up to 1M cycles. Data presented is with respect to the first sweep.
• Relay was tested on a fixture made by Microtest Inc.
• HP 8719D VNA was used for measurements
• Test was performed at room temperature.
• RF input power level 10dBm