Series 172 DPDT Non-Latching Commercial Electromechanical Relay
CESSNA 172H · Specifications
Overview
This document provides specifications for the Series 172 DPDT Non-Latching Commercial Electromechanical Relay. It details the relay's design, features, and performance characteristics, making it suitable for various commercial applications. The document is intended for engineers and technicians involved in the selection and implementation of relays in electronic systems. Key specifications include environmental ratings, electrical performance, and mechanical characteristics, ensuring users can assess the relay's suitability for their specific needs.
- Operating temperature range: -65°C to +125°C
- Maximum weight: 0.15 oz (4.3 g)
- Contact load rating: 1 A at 28 Vdc (resistive)
- Coil voltage options: 5V, 12V, 26.5V
- Contact life rating: 5,000,000 cycles at low level
Document
Source
Originally published by www.teledynedefenseelectronics.com. Sprinkle hosts a reference copy with an added summary, specifications and searchable full text.
Document details
- Type
- Specifications
- Year
- 2021
- Pages
- 5
- File size
- 588 KB
- Publisher
- www.teledynedefenseelectronics.com
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Most owners only have the POH. Here's the essential set for the CESSNA 172H.
- Pilot's Operating Handbook / AFM
- Checklist
- Maintenance ManualNot on file
- Parts Catalog (IPC)
- Systems & Wiring
- Service BulletinsNot on file
- Type Certificate (TCDS)
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In this document
Relay Description
The Series 172 relay is an ultraminiature, hermetically sealed, armature relay designed for commercial applications. It features a low profile height of 0.280 inches and .100 inch grid spaced terminals, making it ideal for high-density packaging. The relay is constructed with all welded components and a unique uni-frame design for enhanced reliability and resistance to environmental extremes.
Electrical Specifications
The relay operates within a temperature range of -65°C to +125°C and can withstand vibrations of up to 10 g's at 500 Hz. It has a maximum weight of 0.15 oz (4.3 g) and can handle a continuous rated duty with a contact resistance of 0.15 Ω max. The contact load ratings include 1 A at 28 Vdc for resistive loads and 200 mA at 28 Vdc for inductive loads.
Coil Specifications
The Series 172 relay is available in various coil voltages, including 5V, 12V, and 26.5V. The coil resistance varies by voltage, with 64 ohms for 5V, 400 ohms for 12V, and 1600 ohms for 26.5V. The maximum pick-up voltage for pulse operation is 3.8V for 5V coils, 9.0V for 12V coils, and 18.0V for 26.5V coils.
Contact Life Ratings
The relay is rated for 5,000,000 cycles at low levels and 500,000 cycles at 0.5 A / 28 Vdc resistive loads. It can handle a contact overload rating of 2 A / 28 Vdc for a minimum of 100 cycles.
Outline Dimensions
The document includes detailed outline dimensions for the relay, with maximum height specifications and terminal locations. The dimensions are provided in inches and millimeters, ensuring compatibility with various mounting configurations.
Safety notes
- Relay contacts will exhibit no chatter in excess of 10 μs or transfer in excess of 1 μs.
- Specifications are subject to change without notice.
Full document text
© 2021 TELEDYNE RELAYS (800) 284-7007 • www.teledynedefenseelectronics.com Page 1 Series 172 DPDT Non-Latching Commercial Electromechanical Relay 172\092021 SERIES RELAY TYPE 172 DPDT basic relay, non-latching 172D DPDT relay with internal diode for coil transient suppression, non-latching DESCRIPTION The 172 Centigrid® relay is an ultraminiature, hermetically sealed, armature relay for commercial applications. Its low profile height (.280”) and .100” grid spaced terminals, which preclude the need for spreader pads, make it an ideal choice where extreme packaging density and/or close PC board spacing are required. The basic operating concept 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 172 feature: • 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 172 relay has an internal discrete silicon diode for coil transient suppression. By virtue of its inherently low intercontact capacitance and contact circuit losses, the 172 relay is an excellent submin- iature RF switch for frequencies well into the UHF spectrum. Applications include telecommunications, test instruments, mobile communications, attenuators, and automatic test equipment. ENVIRONMENTAL AND PHYSICAL SPECIFICATIONS Temperature (Ambient) –65°C to +125°C Vibration (Note 1) 10 g’s to 500 Hz Shock (Note 1) 30 g’s, 6 ms, half sine Enclosure Hermetically sealed Weight 0.15 oz. (4.3g) max. Reflow Temperature 260°C max. temp. 1 min. max INTERNAL CONSTRUCTION INTERNAL CONSTRUCTION UPPER STATIONARY CONTACT LOWER STATIONARY CONTACT UNI-FRAME ARMATURE MOVING CONTACT CENTIGRID® COMMERCIAL RELAYS DPDT Page 2 SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE © 2021 TELEDYNE RELAYS Series 172 DPDT Non-Latching Commercial Electromechanical Relay 172\092021 172 Z M4 - 26 / S Q Relay Series Ground Pin Option (See Appendix A) Pad Option (See Appendix A) Lead Finish Q = Solder-Coated Leads (Sn60/Pb40) R = RoHS Compliant Solder (Sn99.3/Cu0.7) No Suffix = Gold-plated Leads Lead legth S = 0.187” Leads No Suffix = 0.75” Leads Nominal Coil Voltage 26 = 26.5V 12 = 12V 5 = 5V Part Numbering System (Notes 4 & 5) NOTES: 1. Relay contacts will exhibit no chatter in excess of 10 μs or transfer in excess of 1 μs. 2. “Typical” characteristics are based on available data and are best estimates. No on-going verification tests are performed. 3. Unless otherwise specified, parameters are initial values. 4. Unless otherwise specified, relays will be supplied with gold-plated leads. 5. The slash and characters appearing after the slash are not marked on the relay. © 2021 TELEDYNE RELAYS (800) 284-7007 • www.teledynedefenseelectronics.com Page 3 Series 172 DPDT Non-Latching Commercial Electromechanical Relay 172\092021 BASE PART NUMBERS (172, 172D) 172-5 172D-5 172-12 172D-12 172-26 172D-26 Coil Voltage Nom. 5.0 12.0 26.5 Max. 5.8 16.0 32.0 Coil Resistance (Ohms ±20%) 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 (-65 °C to 125 °C unless otherwise noted. See note 3.) TYPICAL DC CONTACT RATING (RESISTIVE) LOADVOLTAGE(VDC) 0 .1 .2 .3 .4 10 20 30 40 50 60 70 .01 0.5 .1 .5 1.0 FREQUENCY (GHz) FIGURE 1 TYPICAL RF PERFORMANCE 1.92 1.22 1.07 1.02 1.01 1.00 1.00 VSWR dB RETURN LOSS (VSWR) ISOLATION ACROSS CONTACTS ISOLATION ACROSS POLES 300 250 200 150 100 50 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 LOAD CURRENT (AMPS DC) FIGURE 2 INSERTION LOSS GENERAL NOTES 1. Relay contacts will exhibit no chatter in excess of 10 μsec or transfer in excess of 1 μsec. 2. “Typical” characteristics are based on available data and are best estimates. No on-going verification tests are performed. 3. Unless otherwise specified, parameters are initial values. 4. Relays can be supplied with a spacer pad. See appendix. PERFORMANCE CURVES (Note 2) GENERAL ELECTRICAL SPECIFICATIONS (-65 °C to 125 °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 specified above Contact Overload Rating 2 A / 28 Vdc Resistive (100 cycles min.) Contact Carry Rating Contact Factory Operate Time 6.0 ms max. @ nominal rated coil voltage Release Time 172: 3.0 ms max. 172D: 6.0 ms 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. Page 4 SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE © 2021 TELEDYNE RELAYS Series 172 DPDT Non-Latching Commercial Electromechanical Relay 172\092021 OUTLINE DIMENSIONS SCHEMATIC DIAGRAMS 172 172D (Viewed From Terminals) SCHEMATIC (Bottom View) SCHEMATIC (Bottom View) 1 2 3 4 5 6 7 8 34 8 7 6 2 1 5 SCHEMATIC (Bottom View) SCHEMATIC (Bottom View) 1 2 3 4 5 6 7 8 34 8 7 6 2 1 5 TYPICAL DC CONTACT RATING (RESISTIVE) LOADVOLTAGE (VDC) 0 .1 .2 .3 .4 10 20 30 40 50 60 70 .01 0.5 .1 .5 1.0 FREQUENCY (GHz) FIGURE 1 TYPICAL RF PERFORMANCE 1.92 1.22 1.07 1.02 1.01 1.00 1.00 V S W R d B R E T U R N L O S S ( V S W R ) I S O L A T I O N
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A C R O S S C O N T A C T S I S O L A T I O N A C R O S S P O L E S 300 250 200 150 100 50 0 0 . 1 0 . 2 0 . 3 0 . 4 0 . 5 0 . 6 0 . 7 0 . 8 0 . 9 1.0 L O A D C U R R E N T ( A M P S D C ) FIGURE 2 I N S E R T I O N L O S S 7 8 1 6 2 5 4 3 .750 MIN. (19.05) .280 MAX (7.11) .335 SQ MAX. (8.51) CASE DETAIL TERMINAL LOCATIONS (Viewed from Terminals, Numbers for Reference Only) DIMENSIONS ARE SHOWN IN INCHES (MILLIMETERS) .017 DIA +.002 –.001 (.43 ) +.05 –.03 .375 SQ MAX. (8.51) .100 ±.010 TYP (2.54 ±.25) .035 REF (.89) .031 REF (.79) OUTLINE DIMENSIONS (Note 4) PERFORMANCE CURVES (Note 2) (9.52) © 2021 TELEDYNE RELAYS (800) 284-7007 • www.teledynedefenseelectronics.com Page 5 Series 172 DPDT Non-Latching Commercial Electromechanical Relay 172\092021 Pad designation and bottom view dimen- sions Height For use with the following: Dim. H Max. “M4” Spacer Pad for Centigrid® 172 .305 (7.75) Notes: 1. Spacer pad material: Polyester film. 2. To specify an “M4” spacer pad, refer to the mounting variants portion of the part numbering example in the applicable datasheet. 3. Dimensions are in inches (mm). 4. Unless otherwise specified, tolerance is ± .010” (.25 mm). 5. Add 10 mΩ to the contact resistance shown in the datasheet. 6. Add 0.01 oz. (0.25 g) to the weight of the relay assembly shown in the datasheet. .156 [3.96] (REF) .256 [6.5] (REF) Dim H MAX Dim H MAX Dim H MAX Dim H MAX .156 [3.96] (REF) .256 [6.5] (REF) Dim H MAX Dim H MAX Dim H MAX Dim H MAX APPENDIX A : Spacer Pads NOTES 1. Terminal views shown 2. Dimensions are in inches (mm) 3. Tolerances: ± .010 (±.25) unless otherwise specified 4. Ground pin positions are within .015 (0.38) dia. of true position 5. Ground pin head dia., 0.035 (0.89) ref: height 0.010 (0.25) ref. 6. Lead dia. 0.017 (0.43) nom. Indicates ground pin position Indicates glass insulated lead position Indicates ground pin or lead position depending on relay type APPENDIX A : Ground Pin Positions
What's in the CESSNA 172H TCDS
A Type Certificate Data Sheet (TCDS) is the FAA's record of what an aircraft type was approved as. It is the source of truth for weights, seating, fuel and the rules the design was certified against. Expand any line to see what it means.
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