TELEDYNE RELAYS SERIES 431 ESTABLISHED RELIABILITY TO-5 RELAY SENSITIVE SPDT Actual Size SERIES DESIGNATION RELAY TYPE 431 SPDT basic relay 431D SPDT relay with internal diode for coil suppression 431DD SPDT relay with internal diodes for coil transient suppression and polarity reversal protection 431T SPDT relay with internal transistor driver and coil transient suppression diode DESCRIPTION INTERNAL CONSTRUCTION The 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 expressly for high density PC Board mounting, its small size, low coil power dissipation make the TO-5 relay one of the most versatile ultraminiature relays available. UNI-FRAME UPPER STATIONARY CONTACT ARMATURE LOWER STATIONARY CONTACT MOVING CONTACT ENVIRONMENTAL AND PHYSICAL SPECIFICATIONS Temperature (Ambient) -65°C to +125°C Vibration 30 g’s to 3000 Hz (Note 1) Shock 75 g’s for 6 msec. (Note 1) half-sine Acceleration 50 g’s (Note 1) Enclosure All welded, hermetically sealed Weight 0.109 oz (3.09 gms.) max. The following unique construction features and manufacturing techniques provide excellent resistance to environmental extremes and overall high reliability: • • • • • 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 431D and 431DD Series utilizes internal discrete silicon diodes for coil suppression and polarity reversal protection. The hybrid 431T features an internal silicon suppression diode and transistor driver. This hybrid package reduces PC board floor space by reducing the number of external components needed to drive the relay. By virtue of its inherently low intercontact capacitance and contact circuit losses, the TO-5 relay has shown itself to be an excellent ultraminiature RF switch for frequency ranges well into the UHF spectrum. A typical RF application for the TO-5 relay is in hand held radio transceivers, wherein the combined features of good RF performance, small size, low coil power dissipation and high reliability make it a preferred method of T-R switching (see Figure 1). 47 SERIES 431 GENERAL ELECTRICAL SPECIFICATIONS (-65°C to +125°C unless otherwise noted) (Notes 2 & 8) Contact Arrangement Rated Duty Contact Resistance Contact Load Rating (DC) (See Fig. 2 for other DC resistive voltage/current ratings) 1 Form C (SPDT) Continuous 0.1 ohm max. before life; 0.2 ohm max. after life at 1A/28VDC, (measured 1/8” from header) Resistive: 1 Amp/28VDC Inductive: 200 mA/28VDC (320 mH) Lamp: 100 mA/28VDC Low Level: 10 to 50 µA/10 to 50 mV Contact Load Ratings (AC) Resistive: 250 mA/115VAC, 60 and 400Hz (Case not grounded) 100 mA/115VAC, 60 and 400Hz (Case grounded) Contact Life Ratings 10,000,000 cycles (typical) at low level 01,000,000 cycles (typical) at 0.5A/28VDC resistive 00,100,000 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 150 milliwatts typical at nominal rated voltage @ 25°C Operate Time 431, 431D, 431DD Series: 4.0 msec max. at nominal rated coil voltage 431T: 3.5 msec (Note 7) Release Time 431 Series: 2.5 msec max. 431D, 431DD, 431T Series: 7.5 msec max. Contact Bounce 1.5 msec max. lntercontact Capacitance 0.4 pf typical Insulation Resistance 10,000 megohms min. between mutually isolated terminals Dielectric Strength Atmospheric pressure: 500 VRMS/60 Hz 70,000 ft.: 300 VRMS/60Hz (431T: 125 VRMS/60 Hz) 1.0 max. Negative Coil Transient (VDC) (431D, 431DD, 431T) 100 min. Diode P.I.V. (VDC) (431D, 431DD, 431T) Base Turn Off Voltage (VDC) 0.3 min. 431T Emitter-base breakdown Voltage (BVEBO) (@ 25°C) (VDC) 6.0 min. Transistor Characteristics Collector-base breakdown Voltage (BVCBO) (@ 25°C & Ic = 100 µA) (VDC) 75 min. DETAILED ELECTRICAL SPECIFICATIONS (-65°C to +125°C unless otherwise noted) (Note 8) BASE PART NUMBERS (See Note 11 for full P/N Example ➧ 431-5 431D-5 431DD-5 431T-5 431-6 431D-6 431DD-6 431T-6 431-9 431D-9 431DD-9 431T-9 431-12 431D-12 431DD-12 431T-12 431-18 431D-18 431DD-18 431T-18 431-26 431D-26 431DD-26 431T-26 5.0 8.0 125 100 36.3 50.0 34.7 47.8 3.7 4.5 3.6 1.2 0.15 2.0 0.15 2.4 6.0 11.0 255 200 22.7 30.6 21.2 27.7 4.5 5.5 4.8 0.78 0.18 2.8 0.18 2.8 9.0 16.0 630 630 11.5 15.0 11.8 16.8 6.8 7.8 7.8 0.48 0.35 4.2 0.35 4.2 12.0 22.0 1025 1025 9.7 12.5 10.1 13.6 9.0 10.0 10.0 0.39 0.41 5.6 0.40 5.6 18.0 33.0 2300 2300 6.7 8.5 6.7 9.1 13.5 14.5 14.5 0.26 0.58 8.4 0.58 8.4 26.5 45.0 4000 4000 5.7 7.2 5.7 7.7 18.0 19.0 19.0 0.20 0.89 10.4 0.89 10.4 Coil Voltage (VDC) Nom. Max. Coil Resistance 431, 431D, 431T (Note 3) (Ohms ±10% @ 25°C) 431DD (Note 3) Coil Current (mADC @ 25°C) Min. (431DD Series) Max. Coil Current (mADC @ 25°C) Min. (Note 7) (431T Series) Max. Pick-up Voltage (VDC, Max.) 431, 431D 431DD 431T (Note 7) Base Current to Turn On (mADC, Max.) (431T Series) (Note 7) Drop-out Voltage (VDC) Min. 431, 431D, 431T (Note 7) Max. Min. 431DD Max. PERFORMANCE CURVES 0 (NOTE 2) TYPICAL RF PERFORMANCE TYPICAL DC CONTACT RATING (RESISTIVE) 431T .1 431 , 43 .2 1D, 431 DD 300 INS ERT .3 ION LOS LOAD VOLTAGE (VDC) S .4 .5 10 1.92 RETURN LOSS (VSWR) 20 30 , 431DD 1.07 431, 431D 40 ION AT ISOL 431T 50 431, 70 .01 1.02 1.01 431T 60 FIGURE 1 1.22 DD , 431 VSWR dB .6 .1 .5 150 100 0 1.00 0.5 200 50 1.00 431D 250 0.1 0.2 0.3 0.4 0.5 0.6 LOAD CURRENT (AMPS DC) 1.0 FIGURE 2 FREQUENCY (GHz) 48 0.7 0.8 0.9 1.0 SERIES 431 OUTLINE DIMENSIONS CASE DETAIL 2 8 .200 (5.08) ± .010 (.25) DIA. .335 (8.51) DIA. MAX. 1 9 .031 (.79) ± .003 (0.08) .370 (9.40) DIA. MAX. SCHEMATIC DIAGRAMS PIN NUMBERS (For reference only) LEAD & PIN LOCATIONS (Viewed from Terminals) 7 3 6 .035 (.89) ± .010 (0.25) 431DD 431 4 431T 431T .375 (9.52) MAX. 4 5 LEADS WIRE LEAD: .75 (19.05) MIN. PIN: .187 (4.75) ± .010 (.25) (See Note 5) 45° ±3° TYP. 36° ±3° TYP. 431, 431D, 431DD +.002 (.05) .017 (.43) –.001 (.03) DIA. 1 5 8 LEADS 3 431T 2 431D 431 SCHEMATICS ARE VIEWED FROM TERMINALS DIMENSIONS ARE SHOWN IN INCHES (MILLIMETERS) SPACER PAD NOTES: Relays can be supplied with a spacer pad attached to the relay header. The pad permits the relay to be spaced away from the mounting surface facilitating solder joint inspection. To order add M4 to the part number (e.g.: ER431M4-26A). 1. Material: Polyester film. 2. Increase contact resistance by 0.01 ohm. TYPICAL TTL INTERFACE CIRCUIT (See Note 9) VT Vcc RELAY COIL A 750Ω 1N914 B 5458 3 KΩ .400 MAX (10.16) (A) Internal Suppression Diode (B) Internal Driver Transistor NOTES: 1. 2. 3. 4. 5. Relays contacts will exhibit no chatter in excess of 10 µsec or transfer in excess of 1 µsec. “Typical” characteristics are based on available data and are best estimates. No on-going verification tests are performed. For reference only. Coil resistance not directly measurable at relays terminals due to internal series semiconductor. 431DD and 431T only. Screened HI-REL versions available. Contact factory. Unless otherwise specified, relays will be supplied with leads as follows: Length will be standard 0.75” (19.05) minimum and will be either gold plated or solder coated. Contact your local representative for ordering information. 6. The slash and characters appearing after the slash are not marked on the relay. 7. Limit Base Emitter current to 15 mADC. 8. Unless otherwise specified, parameters are initial values. 9. Circuit is typical for all 431T Series. Values shown are for the 5 volt series and apply over the full operating temperature range. 10. FAILURE RATE %/10,000 CYCLES RELIABILITY LEVEL A 1.5 B 0.75 11. Teledyne Part Numbering System for Established Reliability Relays (See T2R® Program Introduction) EXAMPLE: ER 431 D Z M4 – 26 A / SQ Established Reliability Designator Termination Variant Q = Solder Coated Leads (Notes 5 and 6) S = .187” Leads (Notes 5 and 6) Relay Series Reliability and Screening Level (Note 10) D = Diode Suppression DD = Diode Suppression and Polarity Protection T = Transistor Driver Coil Voltage Mounting Variant Ground Pin (See page 112) M4 = Spacer Pad ©1996 TELEDYNE RELAYS 49 12525 Daphne Avenue Hawthorne, California 90250