MAGNETIC-LATCHING, BROADBAND RF RELAYS DPDT DESCRIPTION RF180 The Series RF180 relay is an ultraminiature, hermetically sealed, magnetic-latching relay featuring extremely low intercontact capacitance for exceptional RF performance over the full UHF spectrum. Its low profile height and .100" grid spaced terminals make it ideal for applications where extreme packaging density and/or close PC board spacing are required. • All welded construction. • 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 d.c. switching from dry-circuit to 1/4 amp, as well as low and stable insertion loss in RF applications. The RF180 design has been optimized for use in RF attenuators, RF switch matrices, and other applications requiring magnetic latching, high isolation, low insertion loss and low VSWR. The RF180 relay is ideally suited for applications where power dissipation must be minimized. The relays can be operated with a short-duration coil voltage pulse. After the contacts have transferred, no coil power is required. Unique construction features and manufacturing techniques provide high reliability and excellent robustness to environmental extremes. The magnetic-latching feature of the RF180 provides a nonvolatile memory capability, since the relays will not reset upon removal of coil power. 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 STATIONARY B, which also results from the CONTACT magnetic field of the permanent magnet, becomes MOVING great enough to break the 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 –65°C to +125°C Temperature Storage (Ambient) Operating –55°C to +85°C Vibration (General Note 1) 30 g’s to 3000 Hz Shock (General Note 1) 100 g’s, 6 msec, half-sine Enclosure Hermetically sealed Weight 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. RF180 Page 23 SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE www.teledynerelays.com ©2003 TELEDYNE RELAYS RF180/1203/Q1 RF & MICROWAVE SERIES Isolation Across Contacts (RF Note 4) Isolation Pole to Pole (RF Note 5) 0 0 -10 -10 -20 Isolation (dB) Isolation (dB) -20 -30 -40 -50 -30 -40 -50 -60 -60 -70 -80 -70 0 500 1000 1500 2000 2500 3000 3500 4000 4500 5000 5500 0 6000 500 1000 1500 2000 2500 3000 3500 4000 4500 5000 5500 6000 Frequency (MHz) Frequency (MHz) VSWR (RF Note 6) Insertion Loss (RF Note 6) 0 3 -0.2 2.5 -0.4 -0.6 2 -0.8 VSWR Insertion Loss (dB) -1 -1.2 1.5 1 -1.4 0.5 -1.6 -1.8 0 0 500 1000 1500 2000 2500 3000 3500 4000 4500 5000 5500 0 6000 500 1000 1500 2000 Frequency (MHz) 2500 3000 3500 4000 4500 5000 5500 6000 Frequency (MHz) RF180 Time Response (RF Note 6) 1.1 0.9 90% 0.7 Volt RF & MICROWAVE SERIES RF180 TYPICAL RF CHARACTERISTICS CURVES (SEE RF NOTES) 37ps reference 0.5 62ps propagation delay time 0.3 60ps pulse rise time 10% 0.1 -0.1 -100 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. Relay header is in contact with, but not soldered to, ground plane or connected to ground via ground pin. c. Test performed at room ambient temperature. d. Terminals not tested were terminated with 50-ohm load. e. Contact signal level: –10 dBm. 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. ©2003 TELEDYNE RELAYS SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE www.teledynerelays.com RF180 Page 24 RF180/1203/Q1 Contact Arrangement Rated Duty Contact Resistance Contact Load Rating (DC) 2 Form C (DPDT) Continuous 0.15Ω maximum before life; 0.25Ω maximum after life at 0.25A/28Vdc (measured 1/8" from header) Resistive: 0.25A/28Vdc Low Level: 10 to 50 µA/10 to 50 mV 10,000,000 cycles characteristic life (General Note 3) 100,000 cycles minimum at all other loads specified above 0.5A/28Vdc Resistive (100 cycles minimum) Contact factory 290 milliwatts typical at nominal rated voltage @25°C 2.0 msec. maximum at nominal rated coil voltage 6.0 msec. width at rated voltage 0.02 pf typical 1,000 MΩ minimum between mutually isolated terminals Atmospheric pressure: 350 Vrms (60 Hz) 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 DETAILED ELECTRICAL SPECIFICATIONS (–65°C to +125°C, unless otherwise noted) (General Note 2) BASE PART NUMBERS Coil Voltage (Vdc) Nom. Max. Coil Resistance (Ohms ±20%, @25°C) Set & Reset Voltage (Vdc max.) RF180-5 RF180-12 RF180-26 5.0 6.0 61 4.6 12.0 16.0 500 11.0 26.5 32.0 2000 22.0 GENERAL NOTES 1. Relays will exhibit no contact chatter in excess of 10 µsec or transfer in excess of 1 µsec. 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. OUTLINE DIMENSIONS .335 MAX. (8.51) .435 MAX. (11.05) .300 MAX. (7.62) .75 MIN. (19.05) .375 MAX. (9.53) .031 REF. (0.79) .017 + .002 – .001 DIA. (0.43) + (0.051) – (0.025) 10 LEADS 10 9 .100 (2.54) TYP. .035 REF. (0.89) 1 COIL B 8 2 7 3 .475 MAX. (12.06) 4 6 COIL A 5 PIN NUMBERS FOR REF. ONLY .200 (5.08) SCHEMATIC (TERMINAL VIEW) (GENERAL NOTE 4) DIMENSIONS ARE SHOWN IN INCHES (MILLIMETERS) RF180 Page 25 SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE www.teledynerelays.com ©2003 TELEDYNE RELAYS RF180/1203/Q1 RF & MICROWAVE SERIES RF180 GENERAL ELECTRICAL SPECIFICATIONS (–65°C to +125°C, unless otherwise noted) (General Note 2)