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RF & MICROWAVE
SURFACE MOUNT, MAGNETIC-LATCHING BROADBAND RF RELAYS DPDT
DESCRIPTION
The Series GRF180 relay is the first hermetically sealed, ultraminiature RF relay designed from inception for surface mount applications. This magnetic-latching relay features extremely low internal circuit losses for exceptional time and frequency domain response characteristics through and beyond the UHF spectrum and into the S band. The GRF180 features a unique ground shield that isolates and shields each lead to ensure excellent contact-to-contact and pole-topole isolation. This ground shield provides a ground interface that results in improved high-frequency performance as well as parametric repeatability. The GRF180 extends performance advantages over similar RF devices that simply offer formed leads for surface mounting. The GRF180 is robust to shock, vibration and temperature extremes for use in space applications and other demanding environments. It is engineered for use in RF attenuators, RF
SERIES
GRF180
switch matrices, automated test equipment, spacecraft and other applications that require dependable high-frequency signal fidelity and performance. Its low profile and .100" grid spaced terminals make the GRF180 ideal for applications where extreme packaging density and/or close PC board spacing are required. Unique features and manufacturing techniques include: * Positive mounting means to RF ground plane. * Unique uniframe design provides high magnetic efficiency and mechanical rigidity. * High force/mass ratios for resistance to shock and vibration. * Advanced cleaning techniques provide maximum assurance of internal cleanliness. * Gold-plated precious metal alloy contacts ensure reliable dc and RF signal switching, as well as low and stable insertion loss. * Robust to high temperature solder reflow environments.
PRINCIPLE OF OPERATION
PERMANENT MAGNET MAGNETIC CIRCUIT A Energizing Coil A produces a SOFT IRON CORE A magnetic field opposing the MAGNETIC CIRCUIT B SOFT IRON FRAME magnetic field of the permanent magnet in Circuit COIL A COIL B A. As the net holding force decreases, the attractive force in the air gap of Circuit AIR GAP B, which also results from the STATIONARY CONTACT magnetic field of the permanent magnet, becomes great enough to break the MOVING ARMATURE CONTACT armature free of Core A, and snap it into a closed position against Core B. The armature remains in this position upon removal of power from Coil A, but will snap back into position A upon energizing Coil B. Since operation depends upon cancellation of a magnetic field, it is necessary to apply the correct polarity to the relay coils as indicated on the relay schematic.
ENVIRONMENTAL AND PHYSICAL SPECIFICATIONS
-65C to +125C Temperature Storage (Ambient) Operating -55C to +85C Vibration (General Note 1) Shock (General Note 1) Enclosure Weight 30 g's to 500 Hz 100 g's, 6 msec, half-sine Hermetically sealed 0.10 oz. (2.9g) max.
When latching relays are installed in equipment, the latch and reset coils should not be pulsed simultaneously. Coils should not be pulsed with less than rated coil voltage and the pulse width should be a minimum of three times the specified operate time of the relay. If these conditions are not followed, it is possible for the relay to be in the magnetic neutral position.
(c)2003 TELEDYNE RELAYS
SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE www.teledynerelays.com
GRF180 Page 12
GRF180/1203/Q1
RF & MICROWAVE
SERIES GRF180 TYPICAL RF CHARACTERISTICS (See RF Notes)
Isolation Contact to Contact (RF Note 4)
0 -10 -20
Isolation (dB) Isolation (dB)
Isolation Pole to Pole (RF Note 5)
0 -10 -20 -30 -40 -50 -60 -70
-30 -40 -50 -60 -70 0 1000 2000 3000 Frequency (MHz) 4000 5000 6000
0
1000
2000
3000 Frequency (MHz)
4000
5000
6000
Insertion Loss (RF Note 6)
0 -0.2 -0.4
Insertion Loss (dB)
VSWR (RF Note 6)
3 2.8 2.6 2.4
VSWR
-0.6 -0.8 -1 -1.2 -1.4 -1.6 -1.8 0 1000 2000 3000 Frequency (MHz) 4000 5000 6000
2.2 2 1.8 1.6 1.4 1.2 1 0 1000 2000 3000 Frequency (MHz) 4000 5000 6000
Time Domain Reponse
1.1 0.9 0.7
Volt
90%
37ps reference
0.5 0.3 0.1 -0.1 -100
67ps propagation delay time
60ps pulse rise time
10%
0
100
200
300
400 Time, ps
500
600
700
800
900
RF NOTES
1. Test conditions: a. Fixture: .031" copper clad, reinforced PTFE, RT/duroid(R) 6002 with SMA connectors. (RT/duroid(R) 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: 3. 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 after Coil A is energized then Coil B is 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 www.teledynerelays.com (c)2003 TELEDYNE RELAYS
GRF180/1203/Q1
2. 3. 4. 5. 6. 7.
GRF180 Page 13
RF & MICROWAVE
SERIES GRF180 GENERAL ELECTRICAL SPECIFICATIONS (-65C to +125C unless otherwise noted) (General Note 2)
Contact Arrangement Rated Duty Contact Resistance Contact Load Rating (DC) Characteristic Contact Life Ratings (General Note 3) Contact Overload Rating Contact Carry Rating Coil Operating Power Operate Time Minimum Operate Pulse Interconnect Capacitance Insulation Resistance Dielectric Strength 2 Form C (DPDT) Continuous .15 maximum before life; 0.25 maximum after life at 0.25A/28Vdc Resistive: 0.25A/28Vdc Low Level: 10 to 50 A/10 to 50 mV 10,000,000 cycles characteristic life at low level (General Note 3) 100,000 cycles minimum at all other loads specified above 0.5A/28Vdc Resistive (100 cycles minimum) Contact factory GRF180-5: 410 mW typical @ nominal rated voltage GRF180-12: 288 mW typical @ nominal rated voltage GRF180-26: 351 mW typical @ nominal rated voltage 2.0 msec. maximum at nominal rated coil voltage 6.0 msec. width at rated voltage 0.02 pf typical 1,000 M minimum between mutually isolated terminals Atmospheric pressure: 350 Vrms (60 Hz)
DETAILED ELECTRICAL SPECIFICATIONS (-65C to +125C unless otherwise noted) (General Note 2)
BASE PART NUMBERS Coil Voltage (Vdc) Coil Resistance (Ohms 20%, @25C) Set & Reset Voltage (Vdc max.) Nom. Max. GRF180-5 5.0 6.0 61 4.6 GRF180-12 12.0 16.0 500 11.0 GRF180-26 26.5 32.0 2000 22.0
GENERAL NOTES
1. Relays will exhibit no contact chatter in excess of 10 sec or transfer in excess of 1 sec. 2. Unless otherwise specified, parameters are initial values. 3. For extended contact life ratings, contact factory. 4. Contacts shown in position resulting when Coil B last energized. 5. For hi-rel applications, contact factory at (800) 284-7007. 6. Relays may be subjected to 260C, peak solder reflow temperature, 1 minute, 3 passes. 7. Butt-lead ends are coplanar within .003" (0.08). 8. Application notes available for PCB layout and mounting information.
OUTLINE DIMENSIONS
.335 MAX (8.51) .435 MAX (11.05)
.340 MAX (8.64)
.035 REF (0.89)
.375 MAX (9.53) .031 REF (0.79)
.035 REF (0.89)
10 LEADS LENGTH DIA. +.002 .017 -.001 .033 (0.84) REF +0.05 (0.43) -0.03
.100 TYP (2.54) .475 MAX (12.06) 9 8 + .100 TYP (2.54) 7 6
COIL B
10 - 1 2 3 + 4 5 - COIL A
SEE NOTE 3.
SCHEMATIC-TERMINAL VIEW
(SHOWN - COIL B LAST ENERGIZED CONDITION)
U.S. PATENT PENDING
PIN NUMBERS ARE FOR REFERENCE ONLY, NOT MARKED ON RELAY
NOTES: 1. DIMENSIONS ARE IN INCHES. METRIC EQUIVALENTS IN MILLIMETERS ARE SHOWN IN ( ). 2. UNLESS OTHERWISE SPECIFIED, TOLERANCES ON DIMENSIONS ARE .010 INCH (0.025 mm). 3. FOR OPTIMAL RF PERFORMANCE, SOLDER BOTTOM OF GROUND SHIELD TO PCB RF GROUND PLANE.
(c)2003 TELEDYNE RELAYS
SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE www.teledynerelays.com
GRF180 Page 14
GRF180/1203/Q1

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