© 2019 TELEDYNE RELAYS (800) 284-7007 • www.teledynerelays.com S172 Page 1
Series S172
DPDT Non-Latching
Commercial Electromechanical Relay
S172\112019/Q4
SERIES RELAY TYPE
S172 DPDT basic relay
S172D DPDT relay with internal diode for coil transient suppression
DESCRIPTION
The S172 surface mount Centigrid® relay is an ultraminiature, hermetically
sealed, armature relay for commercial applications. Its low profile height
(.470) and .100” grid spaced terminals make it an ideal choice where
extreme packaging density and/or close PC board spacing are required.
The specially formed leads are pre-tinned to make the relays ideal for all
types of surface- mount solder reflow processes.
The basic design and internal structure are similar to Teledyne’s DPDT
114 Centigrid® relay. Unique construction features and manufacturing
techniques provide overall high reliability and excellent resistance to
environmental extremes:
The S172 feature:
• All welded construction.
• High force/mass ratios for resistance to shock and vibration.
• Unique uni-frame design providing high magnetic efficiency and
mechanical rigidity.
• 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 S172D relay has an internal discrete silicon diode for coil transient
suppression.
INTERNAL CONSTRUCTION
CENTIGRID®
SURFACE MOUNT
COMMERCIAL RELAYS
DPDT
ENVIRONMENTAL AND
PHYSICAL SPECIFICATIONS
Temperature
(Operating) –55°C to +85°C
Vibration
(General Note I) 10 g’s to 500 Hz
Shock
(General Note I)
30 g’s,
6ms half sine
Enclosure Hermetically sealed
Weight 0.15 oz. (4.3g) max.
Reflow Temperature 260°C max. temp.
1 min. max
Part Numbering System
S172 - 26 / R
Relay Series
Q = Solder-Coated Leads1
(Surface Mount Relays are
Solder-Coated by default)
R = RoHS Compliant Solder2
Nominal Coil Voltage
(26 = 26.5 V,
See Page 2 for more Voltages)
S172 Page 2 SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE © 2019 TELEDYNE RELAYS
Series S172
DPDT Non-Latching
Commercial Electromechanical Relay
S172\112019/Q4
SERIES S172
GENERAL ELECTRICAL SPECIFICATIONS (-55 °C to 85 °C unless otherwise noted. See notes 2 & 3.)
Contact Arrangement 2 Form C (DPDT)
Rated Duty Continuous
Contact Resistance 0.15 Ω max.
Contact Load Rating
Resistive: 1 A/ 28 Vdc
Inductive: 200 mA/ 28 Vdc (320mH)
Lamp: 100 mA / 28 Vdc (320mH)
Low level: 10 to 50 μA @ 10 to 50 mV
Contact Life Ratings
5,000,000 cycles (typical) at low level
500,000 cycles (typical) at 0.5 A / 28 Vdc resistive
100,000 cycles min. at all other loads specifi ed above
Contact Overload Rating 2 A / 28 Vdc Resistive (100 cycles min.)
Contact Carry Rating Contact Factory
Operate Time 6.0 msec max. at nominal rated coil voltage
Release Time S172: 3.0 ms max. S172D: 6.0 ms max.
Contact Bounce 1.5 msec max.
Intercontact Capacitance 0.4 pf typical
Insulation Resistance 1,000 MΩ min. between mutually isolated terminals
Dielectric Strength 300 Vrms (60 Hz) @ atmospheric pressure
Negative Coil Transient (Vdc) 2.0 Vdc Max.
Diode P.I.V. (Vdc) 60 Vdc Min.
BASE PART NUMBERS (S172, S172D) S172-5
S172D-5
S172-12
S172D-12
S172-26
S172D-26
Coil Voltage Nom. 5.0 12.0 26.5
Max. 5.8 16.0 32.0
Coil Resistance (Ohms ±25%) 64 400 1600
Pick-up Voltage (Vdc, Max.) Pulse Operation 3.8 9.0 18.0
Coil Operating Power at Nominal Voltage (mW) 405 360 440
DETAILED ELECTRICAL SPECIFICATIONS (-55 °C to 85 °C unless otherwise noted. See note 2.)
© 2019 TELEDYNE RELAYS (800) 284-7007 • www.teledynerelays.com S172 Page 3
Series S172
DPDT Non-Latching
Commercial Electromechanical Relay
S172\112019/Q4
SERIES S172
OUTLINE DIMENSIONS
NOTES:
1. DIMENSIONS ARE IN INCHES, METRIC EQUIVALENTS SHOWN IN [ ].
2. POSITIONS 5 AND 10 ARE FOR UNINSULATED CASE GROUND OPTIONS.
3. NO PROTRUSION BELOW BOTTOM OF HEADER WHEN GROUND PINS ARE INSTALLED
4. TO ORDER THE CASE GROUND OPTION, AFTER THE SERIES DESIGNATOR, ADD “Y” TO THE PART NUMBER FOR POSITION
5 OR “Z” TO THE PART NUMBER FOR POSITION 10.
5. UNLESS OTHERWISE SPECIFIED, TOLERANCES ON DIMENSIONS ARE ± .010 INCH (0.025 MM)
SCHEMATIC DIAGRAMS
S172 S172D
(Viewed From Terminals)
