S422 TELEDYNE | Alldatasheet

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© 2022 TELEDYNE RELAYS (800) 284-7007 • www.teledynedefenseelectronics.com Page 1 Series S422 SMT, DPDT Latching Commercial Electromechanical Relay S422_2022 SURFACE MOUNT MAGNETIC-LATCHING TO-5 RELAYS DPDT SERIES DESIGNATION RELAY TYPE S422 SMT-J mounted, Magnetic -latching DPDT Relay S422D SMT-J mounted, Magnetic -latching DPDT Relay with internal diode for coil transient suppression S422DD SMT-J mounted, Magnetic -latching DPDT Relay with internal diode for coil transient suppression and polarity reversal protection

DESCRIPTION

The magnetic-latching TO-5 relay, originally conceived and developed by Teledyne, has become one of the industry standards for low-level switching from dry circuit to 1 ampere. Designed for high-density PC board surface mounting, its small size and low coil power dissipation make the S422 relay one of the most versatile ultraminia- ture relays available. S422 Features:

  • All welded construction.
  • Unique uni-frame design providing 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.
  • Precious metal alloy contact material with gold plating assures excellent high current and dry circuit switching capabilities. The Series S422D and S422DD utilize discrete diodes for coil suppression and polarity reversal protection. By virtue of its inherently low intercontact capacitance and contact circuit losses, these TO-5 relays have proven to be excellent ultraminiature RF switches for frequency ranges well into the UHF spectrum. A typical RF applica- tion for these TO-5 relays is in handheld radio receivers, wherein the combined features of good RF performance, small size, very low coil power dissipation and high reli- ability make it a preferred method of transmit-receive switching. The Series S422 magnetic-latching relays are ideally suited for applications where power dissipation must be minimized. The relays can be operated with a short dura- tion pulse. After the contacts have transferred, no external holding power is required. The magnetic latching feature of the Series S422 relays provide a “memory” capability, since the relays will not reset upon removal of coil power. MAGNETIC CIRCUIT A SOFT IRON FRAME COIL A SOFT IRON COIL A AIR GAP STATIONARY CONTACT PERMANENT MAGNET MAGNETIC CIRCUIT B COIL B SOFT IRON COIL B SOFT IRON ARMATURE MOVING CONTACT ENVIRONMENTAL AND PHYSICAL SPECIFICATIONS Temperature (Operating) –55°C to +85°C Vibration (Note 1) 10 g’s to 500 Hz Shock (Note 1) 30 g’s, 6ms half sine Acceleration 50 g’s Enclosure Hermetically sealed Weight 0.10 oz. (2.84g) max. Reflow Temperature 260°C max. temp. 1 min. max INTERNAL CONSTRUCTION

Page 2 SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE © 2022 TELEDYNE RELAYS Series S422 SMT, DPDT Latching Commercial Electromechanical Relay S422_2022 Contact Arrangement 2 Form C (DPDT) Rated Duty Continuous Contact Load Rating (DC) (See Fig. 2 for other DC resis - tive voltage/current ratings) Resistive: 1A / 28Vdc Inductive: 200 mA / 28Vdc (320 mH) Lamp: 100 mA / 28Vdc Low level: 10 to 50 μA, 10 to 50 mV Contact Load Rating (AC) Resistive: 250 mA/115Vac, 60 Hz and 400 Hz (Case not grounded) 100 mA/115Vac, 60 Hz and 400 Hz (Case grounded) Contact Life Ratings 10,000,000 cycles (typical) at low level 1,000,000 cycles (typical) at 0.5 A / 28Vdc resistive 100,000 cycles min. at all other loads specified above Contact Overload Rating 2A / 28Vdc Resistive (100 cycles min.) Contact Carry Rating Contact Factory Coil Operating Power 290 mW typical @ nominal rated voltage @ 25 °C Operate Time S422/S422D: 1.5 ms max. at nominal rated coil voltage S422DD: 2.0 ms max. at nominal rated coil voltage Contact Bounce 2.0 ms max. Minimum Operate Pulse 4.5 ms width @ rated voltage Intercontact Capacitance 0.4 pF typical Insulation Resistance 10,000 MΩ min. between mutually isolated terminals Dielectric Strength 500 Vrms (60 Hz) @ atmospheric pressure; 70,000 ft.: 125 Vrms/60 Hz Negative Coil Transient (Vdc) S422D, S422DD 1.0 max Diode P.I.V. (Vdc) S422D, S422DD 100 min. DETAILED ELECTRICAL SPECIFICATIONS (-55 °C to 85 °C unless otherwise noted. See note 3.) BASE PART NUMBERS S422-5 S422D-5 S422DD-5 S422-12 S422D-12 S422DD-12 S422-26 S422D-26 S422DD-26 Coil Voltage, Nominal (Vdc) Nom. 5.0 12.0 26.5 Max. 6.0 16.0 32.0 Coil Resistance (Ohms ±10% @25°C) S422 & S422D 61 500 2000 S422DD (Note 4) 48 500 2000 Coil Current (mAdc @ 25 °C) (S422DD Series only) Min. 75.8 20.0 11.6 Max. 104.2 25.5 14.4 Set & Reset Voltage (Vdc, Max.) S422 & S422D 3.5 9.0 18.0 S422DD 4.5 10.0 19.0 GENERAL ELECTRICAL SPECIFICATIONS (-55 °C to 85 °C unless otherwise noted. See notes 2 & 3.) S422 - 26 / R Relay Series S422 S422D S422DD Lead Finish Q = Solder-Coated Leads (Sn60/Pb40) R = RoHS Compliant Solder (Sn99.3/Cu0.7) Coil Voltage 5 = 5V 12 = 12V 26 = 26.5 V Part Numbering System (Notes 7 & 8)