Series GRF300/GRF303
DPDT Non-Latching Electromechanical Relay
Signal Integrity up to 18Gbps
SURFACE MOUNT
HIGH REPEATABILITY,
BROADBAND TO-5 RELAYS
DPDT
SERIES
RELAY TYPE
GRF300
GRF300D
GRF300DD
GRF303
GRF303D
GRF303DD
DESCRIPTION
Repeatable, RF relay
Repeatable, RF relay with internal diode for coil transient suppression
Repeatable, RF relay with internal diodes for coil transient suppression and polarity reversal
protection
Sensitive, repeatable, RF relay
Sensitive, repeatable, RF relay with internal diode for coil transient suppression
Sensitive, repeatable, RF relay with internal diodes for coil transient suppression and polarity
reversal protection
• High isolation between control and signal paths
• High resistance to ESD
The following unique construction features and manufacturing techniques
provide excellent robustness to environmental extremes and overall high
reliability:
• Uniframe 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
The Series GRF300D/GRF303D and GRF300DD/GRF303DD relays have
internal discrete silicon diodes for coil suppression and polarity reversal
protection.This hybrid package reduces required PC board floor space
by reducing the number of external components needed to drive the relay.
The ultraminiature GRF300 and GRF303 relays are designed to provide a
practical surface-mount solution with improved RF signal repeatability over
the frequency range. GRF300 and GRF303 relays feature a unique ground
shield that isolates and shields each lead to ensure excellent contact-to-
contact and pole-to-pole isolation. The GRF300/GRF303 version with
the improved ground connections can push the performance up into the
10Gbps data rates for digital signal integrity applications. This ground
shield provides a ground interface that results in improved high-frequency
performance as well as parametric repeatability. The GRF300 and GRF303
extend performance advantages over similar RF devices that simply offer
formed leads for surface mounting. These relays are engineered for use in
RF attenuator, RF switch matrices, ATE and other applications that require
dependable high frequency signal fidelity and performance.
The GRF300 and GRF303 feature:
• High repeatability
• Broader bandwidth
• Metal enclosure for EMI shielding
ENVIRONMENTAL AND
PHYSICAL SPECIFICATIONS
Temperature
(Ambient)
Storage
Operating
–65°C to +125°C
–55°C to +85°C
10 g’s to 500 Hz
30 g’s,
6ms half sine
Hermetically sealed
GRF300
GRF303
0.09 oz. (2.55g) max.
0.16 oz. (4.5g) max.
INTERNAL CONSTRUCTION
Vibration
(General Note I)
Shock
(General Note I)
Enclosure
Weight
UPPER STATIONARY
CONTACT
MOVING CONTACT
UNIFRAME
ARMATURE
LOWER STATIONARY
CONTACT
GROUND SHIELD
© 2013 TELEDYNE RELAYS
(800) 284-7007 • www.teledynerelays.com
GRF300/GRF303 Page 1
GRF300GRF303\082013\Q3
Series GRF300/GRF303
DPDT Non-Latching Electromechanical Relay
Signal Integrity up to 18Gbps
SERIES GRF300/GRF303
TYPICAL RF CHARACTERISTICS (See RF Notes)
Isolation Across Contacts (RF Note 4)
0
0
-10
-20
Isolation Pole to Pole (RF Note 5)
-10
Isolation (dB)
Isolation (dB)
-20
-30
-40
-50
-30
-40
-50
-60
-70
0
500
1000
1500
2000
2500
3000
3500
4000
4500
5000
5500
6000
0
500
1000
1500
2000
2500
3000
3500
4000
4500
5000
5500
6000
-60
Frequency (MHz)
Frequency (MHz)
Insertion Loss (RF Note 6)
0
2.0
VSWR (RF Note 6)
Insertion Loss (dB)
-0.2
1.8
VSWR
-0.4
1.6
-0.6
1.4
-0.8
1.2
-1
0
500
1000
1500
2000
2500
3000
3500
4000
4500
5000
5500
6000
1.0
0
500
1000
1500
2000
2500
3000
3500
4000
4500
5000
5500
6000
Frequency (MHz)
Frequency (MHz)
GRF300 Time Response (RF Note 6)
1.1
0.9
90%
0.7
37ps reference
Volt
0.5
0.3
0.1
-0.1
-100
62.3ps propagation delay time
51.3ps pulse rise time
10%
0
100
200
300
400
500
600
700
800
900
Time (ps)
RF NOTES
1. Test conditions:
2.
3.
4.
5.
6.
7.
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.
Data presented herein represents typical characteristics and is not intended for use as specification limits.
Data is per pole, except for pole-to-pole data.
Data is the average from readings taken on all open contacts.
Data is the average from readings taken on poles with coil energized and de-energized.
Data is the average from readings taken on all closed contacts.
Test fixture effect de-embedded from frequency and time response data.
SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE
© 2013 TELEDYNE RELAYS
GRF300GRF303\082013\Q3
GRF300/GRF303 Page 2
Series GRF300/GRF303
DPDT Non-Latching Electromechanical Relay
Signal Integrity up to 18Gbps
SERIES GRF300 AND GRF303
TYPICAL RF INSERTION LOSS REPEATABILITY CHARACTERISTICS
(See RF Insertion Loss Repeatability Notes)
REPEATABILITY CHARACTERISTICS GRF300 RELAYS
Normally Closed
100%
100%
Normally Open
% Total Number of Recorded Test Cycles
% Total Number of Recorded Test Cycles
80%
80%
60%
60%
40%
40%
20%
20%
0%
0
0.02
0.04
0.06
0.08
0.1
0.12
0.14
0.16
0.18
0.2
Repeatability (dB)
0%
0
0.02
0.04
0.06
0.08
0.1
0.12
0.14
0.16
0.18
0.2
Repeatability (dB)
REPEATABILITY CHARACTERISTICS GRF303 RELAYS
Normally Closed
100%
100%
Normally Open
% Total Number of Recorded Test Cycles
% Total Number of Recorded Test Cycles
80%
80%
60%
60%
40%
40%
20%
20%
0%
0
0.02
0.04
0.06
0.08
0.1
0.12
0.14
0.16
0.18
0.2
Repeatability (dB)
0%
0
0.02
0.04
0.06
0.08
0.1
0.12
0.14
0.16
0.18
0.2
Repeatability (dB)
a.
Fixture: .031" copper clad, reinforced PTFE, RT/duroid
®
6002 with SMA connectors.
(RT/duroid
®
is a registered trademark of Rogers Corporation.)
b.
Test performed at room ambient temperature.
c.
Contact signal level: 20dBm.
2. Data presented herein represents typical characteristics and is not intended for use as specification limits.
3. Insertion loss repeatability measured over frequency range from 50MHz to 4GHz.
RF INSERTION LOSS REPEATABILITY NOTES
1. Test conditions:
© 2013 TELEDYNE RELAYS
(800) 284-7007 • www.teledynerelays.com
GRF300/GRF303 Page 3
GRF300GRF303\082013\Q3
Series GRF300/GRF303
DPDT Non-Latching Electromechanical Relay
Signal Integrity up to 18Gbps
SERIES GRF300/GRF303
TYPICAL RF REPEATABILITY PERFORMANCE (See RF Notes 1,2 and 3)
1 Million Cycle Repeatability
±0.1 dB from DC to 3GHz
0.12
0.10
.080
±dB
.060
.040
.020
0
Typical repeatability of attenuation during life (normally open contacts)
MAX
X
MIN.
1
2
3
4
5
6
6
7
8
9
10
Number of cycles X10
0.12
0.10
.080
±dB
.060
.040
.020
0
Typical repeatability of insertion loss during life (normally closed contacts)
MAX
X
MIN.
1
2
3
4
5
6
6
7
8
9
10
Number of cycles X10
RF NOTES
1. One million cycle repeatability data is based upon 396 observations with an average repeatability ±0.033 dB
and a range of ±0.093 dB.
2. Repeatability of attenuation values were obtained from tests conducted in a 20 dB attenuator network with a 0 dBm
input signal.
3. Relay operates at frequencies higher than 3 GHz with reduced RF performance characteristics.
4. Curves were developed from tests performed on a 0.031" copper clad, reinforced PTFE circuit board at 20°C (ref).
The unutilized contacts were terminated in 50 ohms; characteristic impedance of measuring equipment is 50 ohms.
The relays were mounted flush to the circuit board ground plane without the relay header soldered to the ground
plane.
GRF300/GRF303 Page 4
SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE
© 2013 TELEDYNE RELAYS
GRF300GRF303\082013\Q3
Series GRF300/GRF303
DPDT Non-Latching Electromechanical Relay
Signal Integrity up to 18Gbps
SERIES GRF300/GRF303
GENERAL ELECTRICAL SPECIFICATIONS (@25
°C)
Contact Arrangement
Rated Duty
Contact Resistance
Contact Load Rating
Contact Life Ratings
Coil Operating Power
Operate Time
Release Time
Intercontact Capacitance
Insulation Resistance
Dielectric Strength
Negative Coil Transient (Vdc)
Diode P.I.V. (Vdc)
2 Form C (DPDT)
Continuous
0.15
Ω
max.
Resistive: 1Amp/28Vdc
Low level: 10 to 50
μA
@ 10 to 50 mV
10,000,000 cycles (typical) at low level
GRF300-5: 500 mW @ nominal coil
GRF303-5: 250 mW @ nominal coil
GRF300: 4.0 mS max.
GRF303: 6.0 mS max.
GRF300: 3.0 mS max.
GRF303: 3.0 mS max.
0.4 pf typical
1,000 MΩ min. between mutually isolated terminals
350 Vrms (60 Hz) @ atmospheric pressure
GRF300D/GRF303D,
GRF300DD/GRF303DD
GRF300D/GRF303D,
GRF300DD/GRF303DD
1.0 max
100 min.
GRF300D, GRF300DD: 4.0 mS max.
GRF303D, GRF303DD: 7.5 mS max.
GRF300-12: 370 mW @ nominal coil
GRF303-12: 169 mW @ nominal coil
DETAILED ELECTRICAL SPECIFICATIONS (@25°C)
BASE PART NUMBERS (GRF300, GRF300D,
GRF300DD)
Coil Voltage, Nominal (Vdc)
Coil Resistance (Ohms
±20%)
Coil Current (mAdc@ 25
°C)(RF300DD Series)
Pick-up Voltage (Vdc
max.)
GRF300, GRF300D
GRF300DD (General
Note II)
Min.
Max.
GRF300, GRF300D,
GRF300DD
GRF300-5
GRF300D-5
GRF300DD-5
GRF300-12
GRF300D-12
GRF300DD-12
5.0
50
39
93.2
128.2
3.6
3.9
GRF303-5
GRF303D-5
GRF303DD-5
12.0
390
390
25.6
32.8
9.0
10.0
GRF303-12
GRF303D-12
GRF303DD-12
BASE PART NUMBERS (RF303, RF303D,
RF303DD)
Coil Voltage, Nominal (Vdc)
Coil Resistance (Ohms
±20%)
Coil Current (mAdc@ 25
°C)(RF303DD Series)
Pick-up Voltage (Vdc
max.)
GRF303, GRF303D
GRF303DD (General
Note II)
Min.
Max.
GRF303, GRF303D,
GRF303DD
5.0
100
64
56.8
78.1
3.6
3.7
12.0
850
850
11.7
15.0
9.0
11.0
© 2013 TELEDYNE RELAYS
(800) 284-7007 • www.teledynerelays.com
GRF300/GRF303 Page 5
GRF300GRF303\082013\Q3
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