Series RF424 Magnetic-Latching Electromechanical Relay Signal Integrity up to 10Gbps, MAGNETIC-LATCHING DC-8 GHz TO-5 RELAYS 4PST SERIES RELAY TYPE RF424 4PST RF Relay RF424D 4PST RF Relay with internal diodes for coil transient suppression DESCRIPTION The RF424 series relay is an ultraminiature, hermetically sealed, magnetic-latching relay featuring low intercontact capacitance for exceptional RF performance from DC-8 GHz. It’s low profile and small size make it ideal for applications where extreme packaging density and/or close PC board spacing are required. Due to its minimal mass, many relays may be used to configure replacements for bulkier switching solutions at a substantial savings in weight.These design features make these unique relays the perfect choice for use in RF attenuators, RF switching matrices and other RF applications requiring low insertion loss and low VSWR. The basic operating mechanism is similar to the TO-5 422 series relay. The following unique construction features and manufacturing techniques provide overall high reliability and excellent resistance to environmental extremes: PRINCIPAL OF OPERATION PERMANENT MAGNET MAGNETIC CIRCUIT B • 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 contacts ensure reliable, lowlevel switching. The RF424 relay is ideally suited for applications where power dissipation must be minimized. The relays can be operated with a short duration pulse. After the contacts have transferred, no external holding power is required. The magnetic latching feature of the RF424 series provides a nonvolatile “memory” capability since the relays will not reset upon removal of coil power. The 424D series utilizes discrete diodes for coil suppression. MAGNETIC CIRCUIT A SOFT IRON FRAME Energizing Coil B produces a + + magnetic field opposing the holdCOIL A COIL B ing flux of the permanent magnet SOFT IRON SOFT IRON COIL A COIL B in Circuit B. As this net holding AIR GAP SOFT IRON force decreases, the attractive ARMATURE STATIONARY CONTACT force in the air gap of Circuit A, which also results from the flux of the MOVING permanent magnet, becomes great CONTACT enough to break the armature free of Core B, and snap it into a closed position against Core A. The armature then remains in this position upon removal of power from Coil B, but will snap back into position B upon energizing Coil A. 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. 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. © 2013 TELEDYNE RELAYS (800) 284-7007 • www.teledynerelays.com ENVIRONMENTAL AND PHYSICAL SPECIFICATIONS Temperature Storage Operating –65°C to +125°C –55°C to +85°C Vibration 10 g’s to 500 Hz (General Note 1) Shock 30 g’s, for 6 msec (General Note 1) half sine Enclosure Hermetically Sealed Weight 0.1 oz. (2.9g) max. RF424 Page 1 RF424\062013\Q2 Series RF424 Magnetic-Latching Electromechanical Relay Signal Integrity up to 10Gbps, SERIES RF424/RF424D TYPICAL RF CHARACTERISTICS (See RF Notes) Isolation Across Contacts (RF Note 4) Isolation Pole to Pole (RF Note 5) -20 0 -10 -30 -40 -30 Isolation ( dB ) Isolation ( dB ) -20 -40 -50 -60 -50 -60 -70 -70 Path: 1-2 or 8-9 -80 Path: 1-2 or 8-9 -80 Path: 3-4 or 6-7 Path: 3-4 or 6-7 -90 -90 0 1 2 3 4 5 6 7 8 0 1 2 3 Frequency, GHz 4 5 6 7 8 6 7 8 Frequency, GHz Insertion Loss (RF Note 6) VSWR (RF Note 6) 4 0 -0.2 Path: 1-2 or 8-9 3.5 Path: 3-4 or 6-7 -0.6 3 VSWR Insertion Loss ( dB ) -0.4 -0.8 -1 2.5 -1.2 2 -1.4 -1.6 1.5 Path: 1-2 or 8-9 Path: 3-4 or 6-7 -1.8 -2 1 0 1 2 3 4 Frequency, GHz 5 6 7 8 0 1 2 3 4 5 Frequency, GHz RF NOTES 1. Test conditions: 2. 3. 4. 5. 6. 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 soldered to ground plane. c. Room ambient temperature. d. All 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 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. RF424 Page 2 SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE © 2013 TELEDYNE RELAYS RF424\062013\Q2 Series RF424 Magnetic-Latching Electromechanical Relay Signal Integrity up to 10Gbps, SERIES RF424A/RF424D GENERAL ELECTRICAL SPECIFICATIONS (@25°C unless otherwise noted) (Note 2) Contact Arrangement Bi-Stable (4PST) 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 100,000 cycles min. at all other loads specified above Coil Operating Power RF424-5: 410 mW typical @ nominal rated voltage RF424-12: 288 mW typical @ nominal rated voltage RF424-26: 351 mW typical @ nominal rated voltage Operate Time 1.5 mS max. @ nominal rated voltage Contact Bounce 3.0 mS max. Intercontact Capacitance 0.4 pf typical Insulation Resistance 10,000 MΩ min. between mutually isolated terminals Dielectric Strength 350 Vrms (60 Hz) @ atmospheric pressure 125 Vrms (60 Hz) @ 70,000 ft Negative Coil Transient (Vdc) RF424D: 1.0 max. Diode P.I.V. (Vdc) RF424D: 100 min. DETAILED ELECTRICAL SPECIFICATIONS (@25°C) RF424-5 RF424D-5 RF424-12 RF424D-12 RF424-26 RF424D-26 Nom. 5.0 12.0 26.5 BASE PART NUMBERS Coil Voltage, Nominal (Vdc) Max. 6.5 16.0 32.0 Coil Resistance (Ohms ±20% @ 25°C) (Note 4) 61 500 2000 Set & Reset Voltage (Vdc, Max.) Pulse Operated 4.0 9.6 19.0 Teledyne Part Numbering System for RF424 RF424D - 5 / S Q Q = Solder Coated Leads1 G = Gold Plated Leads (RoHS Compliant) R = RoHS Compliant Solder2 Relay Series D= Internal diode for transient suppression S = 0.187” Leads W = 1.5” Leads No Suffix = 0.75” Leads Nominal Coil Voltage General Note: Parts ordered without suffix may be supplied with Solder-Coated or Gold-Plated leads 1 Parts ordered with Solder-Coated leads will have (Sn60/Pb40) 2 Parts ordered with RoHS Solder-Coated leads will have (Sn99.3/Cu0.7) © 2013 TELEDYNE RELAYS (800) 284-7007 • www.teledynerelays.com RF424 Page 3 RF424\062013\Q2 Series RF424 Magnetic-Latching Electromechanical Relay Signal Integrity up to 10Gbps, SERIES RF424/RF424D OUTLINE DIMENSIONS RF424D COIL B + 10 9 1 2 8 7 3 6 COIL A + 5 4 SCHEMATIC (Coil B Last Energized) (Bottom View) RF424 9 COIL B + 10 1 2 8 7 COIL A 3 6 + 5 4 SCHEMATIC (Coil B Last Energized) (Bottom View) NOTES: 1. DIMENSIONS ARE IN INCHES, METRIC EQUIVALENTS SHOWN IN [ ]. GENERAL NOTES 1. 2. 3. 4. Relays will exhibit no contact chatter in excess of 10 μsec or transfer in excess of 1 μsec. Unless otherwise specified, parameters are initial values. For extended contact life ratings, contact factory. Contacts shown in position resulting when Coil B last energized. RF424 Page 4 SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE © 2013 TELEDYNE RELAYS RF424\062013\Q2 Series RF424 Magnetic-Latching Electromechanical Relay Signal Integrity up to 10Gbps, SERIES RF424/RF424D TYPICAL SIGNAL INTEGRITY CHARACTERISTICS Typical Path +150 mV 0V -150 mV 0 ps 40 ps 80 ps 120 ps 160 ps Eye Height Eye Width SNR JitterP-P 254.0 mV 90.27 ps 15.61 8.89 ps PATTERN GENERATOR SETTINGS • • • • • 10 Gbps Random Pulse Pattern Generator 231 - 1 PRBS signal PRBS output of 300 mVP-P (nominal) RF PCB effect (negligible) not removed from measurement Data shown is typical of both poles © 2013 TELEDYNE RELAYS (800) 284-7007 • www.teledynerelays.com RF424 Page 5 RF424\062013\Q2