SERIES
GRF311
SURFACE MOUNT
HIGH REPEATABILITY
8 GHz
TO-5 RELAYS
SIGNAL INTEGRITY TO 12 Gbps
SPDT
INTERNAL CONSTRUCTION
SERIES
DESIGNATION RELAY TYPE
GRF311 Repeatable, RF TO-5 relay
PERFORMANCE FEATURES
The GRF311 offers monotonic insertion loss to 8 GHz. This
improvement in RF insertion loss over the frequency range
makes these relays highly suitable for use in attenuator and other
RF circuits. The GRF311 features:
• High repeatability.
• Broader bandwidth.
• Metal enclosure for EMI shielding.
• High isolation between control and signal paths.
• Highly resistant to ESD.
CONSTRUCTION FEATURES
The following unique construction features and manufacturing
techniques provide excellent resistance to environmental
extremes and overall high reliability.
• Uni-frame motor design provides high magnetic efficiency
and mechanical rigidity.
• Minimum mass components and welded construction provide
maximum resistance to shock and vibration.
• Advanced cleaning techniques provide maximum assurance
of internal cleanliness.
• Gold-plated precious metal alloy contacts ensure reliable
switching.
• Hermetically sealed.
• Solderable leads.
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 0.09 oz. (2.55g) max.
UNIFRAME
ARMATURE
GROUND SHIELD
UPPER
STATIONARY
CONTACT
MOVING CONTACT
LOWER
STATIONARY
CONTACT
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SERIES GRF311
TYPICAL RF CHARACTERISTICS (See RF Notes)
RF NOTES
1. Test conditions: a. Fixture: .031" copper clad, reinforced PTFE, RT/duroid® 6002 with SMA connectors.
(RT/duroid
® is a registered trademark of Rogers Corporation.)
b. RF ground shield is soldered to PCB RF ground plane.
c. Room ambient temperature.
d. Terminals not tested were terminated with 50-ohm load.
e. Contact signal level: –10 dBm.
f. No. of test samples: 2.
2. Data presented herein represents typical characteristics and is not intended for use as specification limits.
3. Data is the average from readings taken on all open contacts.
4. Data is the average from readings taken on all closed contacts.
5. Test fixture effect de-embedded from frequency and time response data.
Pulse Response Characteristic
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
1.1
-50 0 50 100 150 200 250 300 350
Time (ps)
Volts (V)
Reference
NC
NO
Propagation Delay Time:
- NC : 56 ps
- NO : 61 ps
Pulse Rise Time:
- NC : 48 ps
- NO : 47 ps
Input Pulse Rise Time: 37 ps
GRF311 Isolation Across Contacts (RF Note 3)
-60
-50
-40
-30
-20
-10
0
0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000
Frequency (MHz)
Isolation (dB)
Normally Closed
Normally Open
GRF311 Insertion Loss (RF Note 4)
-2.5
-2
-1.5
-1
-0.5
0
0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000
Frequency (MHz)
Insertion Loss (dB)
Normally Closed
Normally Open
1
1.2
1.4
1.6
1.8
2
2.2
2.4
2.6
2.8
0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000
Frequency (MHz)
VSWR
Normally Closed
Normally Open
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SERIES GRF311
GENERAL ELECTRICAL SPECIFICATIONS (@ 25 ºC unless otherwise noted)
Contact Arrangement 1 Form C (SPDT)
Rated Duty Continuous
Contact Resistance 0.15 Ω max. initial (measured 1/8" from the header)
Contact Load Rating Resistive: 1Amp/28Vdc
Low level: 10 to 50 μA, 10 to 50 mV
Contact Life Ratings 10,000,000 cycles (typical) at low level
Coil Operating Power 350 mW typical @ nominal rated voltage
Operate Time 4.0 mS max.
Release Time 3.0 mS max.
Intercontact Capacitance 0.4 pF typical
Insulation Resistance 1,000 MΩ min. between mutually isolated terminals
Dielectric Strength 350 Vrms (60 Hz) @ atmospheric pressure
DETAILED ELECTRICAL SPECIFICATIONS (@25°C)
BASE PART NUMBERS GRF311-5 GRF311-12 GRF311-26
Coil Voltage, Nominal (Vdc) 5.0 12.0 26.5
Coil Resistance (Ohms ±20%) 63 500 2000
Pick-up Voltage (Vdc max.) 3.6 9.0 18.0
GENERAL NOTES
1. Relays will exhibit no contact chatter in excess of 10 μsec or transfer in excess of 1 μsec.
2. Relays may be subjected to 260 ºC peak solder reflow temperature, 1 minute, 3 passes.
3. Butt-lead ends are coplanar within .003” (0.08 mm).
4. Application notes available for PCB mounting information.
OUTLINE DIMENSIONS
.031
[0.79]
REF
.035
[0.89]
REF
Ø.200
[Ø5.08] 45°±3°
TYP
.315
[8] MAX
Ø.370
[9.4]
MAX RF GROUND SHIELD
(SEE NOTE 3)
32
14
SCHEMATIC - TERMINAL VIEW
5
PIN NUMBERS ARE FOR
REFERENCE ONLY;
NOT MARKED ON RELAY
© 2009 Teledyne Relays SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE GRF311 Page 3
(800) 284-7007 • www.teledynerelays.com • +44 (0) 1236 453124 • www.teledyne-europe.com