SURFACE MOUNT,
HIGH REPEATABILITY,
BROADBAND
TO-5 RELAYS
DPDT
SERIES
DESIGNATION
SGRF300
SGRF303
RELAY TYPE
Repeatable, RF TO-5 relay
Sensitive, repeatable, RF TO-5 relay
DESCRIPTION
SERIES
SGRF300
SGRF303
INTERNAL CONSTRUCTION
UNIFRAME
UPPER
STATIONARY
CONTACT
MOVING
CONTACT
ARMATURE
LOWER
STATIONARY
CONTACT
The ultraminiature SGRF300 and SGRF303 relays are
designed to provide a practical surface-mount solution with
improved RF signal repeatability over the frequency range.
SGRF300 and SGRF303 relays feature a unique ground
shield that isolates and shields each lead to ensure excellent
contact-to-contact and pole-to-pole isolation. This ground
shield provides a ground interface that results in improved high-
frequency performance as well as parametric repeatability. The
SGRF300 and SGRF303 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 SGRF300 and SGRF303 feature:
• High repeatability
• Broader bandwidth
• Metal enclosure for EMI shielding
• 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
SGRF300/SGRF303 Page
SGRF300SGRF303\052007\Q
SHOWN WITHOUT GROUND SHIELD
ENVIRONMENTAL AND
PHYSICAL SPECIFICATIONS
Temperature
(Ambient)
Storage
Operating
–65°C to +25°C
–55°C to +85°C
0 g’s to 500 Hz
30 g’s,
6ms half sine
Hermetically sealed
SGRF300
SGRF303
0.09 oz. (2.55g) max.
0.6 oz. (4.5g) max.
Vibration
(General Note )
Shock
(General Note )
Enclosure
Weight
© 2007 TELEDYNE RELAYS
(800) 284-7007 • www.teledynerelays.com
SERIES SGRF300 AND SGRF303
TYPICAL RF CHARACTERISTICS (See RF Notes)
Isolation Across Contacts (RF Note 4)
0
0
-10
-20
Energized
De-energized
Isolation Pole to Pole (RF Note 5)
-10
Normally Closed
Normally Open
Isolation (dB)
Isolation (dB)
-20
-30
-40
-50
-60
-70
-30
-40
-50
-60
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
Frequency (MHz)
Frequency (MHz)
Insertion Loss (RF Note 6)
0
2.0
VSWR (RF Note 6)
-0.2
Insertion Loss (dB)
Normally Closed
Normally Open
VSWR
1.8
Normally Closed
Normally Open
-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)
SGRF300 Time Response (RF Note 6)
1.1
0.9
0.7
90%
37ps reference
62.3ps propagation delay time
51.3ps pulse rise time
Volt
0.5
0.3
0.1
-0.1
-100
10%
0
100
200
300
400
500
600
700
800
900
Time (ps)
RF NOTES
. Test conditions:
2.
3.
4.
5.
6.
7.
a.
Fixture: .03" 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: –0 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.
SGRF300/SGRF303 Page 2
SPECIFICATIONS ARE SUBjECT TO CHANGE wITHOUT NOTICE
© 2007 TELEDYNE RELAYS
SGRF300SGRF303\052007\Q
SERIES SGRF300 AND SGRF303
GENERAL ELECTRICAL SPECIFICATIONS (@25°C unless otherwise noted) (Notes 2 & 3)
Contact Arrangement
Rated Duty
Contact Resistance
Contact Load Rating
Contact Life Ratings
Coil Operating Power
2 Form C (DPDT)
Continuous
0.5
Ω
max.
Resistive: Amp/28Vdc
Low level: 0 to 50
μA
@ 0 to 50 mV
0,000,000 cycles (typical) at low level
SGRF300-5: 500 mw typical @ nominal rated voltage
SGRF300-2: 370 mw typical @ nominal rated voltage
SGRF303-5: 250 mw typical @ nominal rated voltage
SGRF303-2: 69 mw typical @ nominal rated voltage
SGRF300: 4.0 mS max.
SGRF303: 6.0 mS max.
SGRF300: 3.0 mS max.
SGRF303: 3.0 mS max.
0.4 pf typical
,000 MΩ min. between mutually isolated terminals
350 Vrms (60 Hz) @ atmospheric pressure
Operate Time
Release Time
Intercontact Capacitance
Insulation Resistance
Dielectric Strength
DETAILED ELECTRICAL SPECIFICATIONS (@25°C)
BASE PART NUMBERS
Coil Voltage, Nominal (Vdc)
Coil Resistance (Ohms ±20%)
Pick-up Voltage (Vdc max.)
SGRF300
SGRF303
SGRF300-5/SGRF303-5
SGRF300-12/SGRF303-12
5.0
50
00
3.6
2.0
390
850
9.0
GENERAL NOTES
. Relays will exhibit
no contact chatter in
excess of 0 µsec or
transfer in excess of
µsec.
2. Unless otherwise
specified, parameters
are initial values.
3. Relays may be
subjected to 260°C,
peak solder reflow
temperature, minute, 3
passes.
4. Butt-lead ends are
coplanar within
.003" (0.08).
5. Application notes
available for PCB
layout and mounting
information.
OUTLINE DIMENSIONS
Ø .335 MAX
(8.51)
SRGF300
.340 MAX
(8.64)
SRGF303
.440 MAX
(11.18)
.063 REF
(1.6)
.370 MAX
(9.4)
.031 REF
(0.79)
.035 REF
(0.89)
(8) LEADS
Ø.017
–.001
+.002
+0.05
(0.43
–0.025
)
BEFORE
LASER WELD
Ø .200 ±.010
(5.08 ±0.254)
+.030
4X .397
–.020
9
8
1
2
3
36° ±3° TYP
7
6
4
RF GROUND
SHIELD
(SEE NOTE 2)
U.S. PATENT PENDING
(10.08
+0.76
)
–0.51
SCHEMATIC – TERMINAL VIEW
Pin numbers for reference only;
not marked on display
NOTES
1. Dimensions are in inches. Metric equivalents shown in parentheses.
2. For best RF performance, solder bottom of RF ground shield to PCB RF ground plane.
© 2007 TELEDYNE RELAYS
(800) 284-7007 • www.teledynerelays.com
SGRF300/SGRF303 Page 3
SGRF300SGRF303\052007\Q
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