# General Purpose Relay, 172 Series, Power, DPDT, 12 VDC, 1 A
**URL**: https://novapart.co/products/172-12/general-purpose-relay-172-series-power-dpdt-12-vdc
**SKU**: 172-12
**Manufacturer**: TELEDYNE
**Category**: Switches & Relays || Relays || Power Relays
**Price**: €24.2400
**Stock**: 10+
## Specifications
| Parameter | Value |
|---|---|
| Coil Type | DC |
| Coil Voltage | 12VDC |
| Product Range | 172 |
| Relay Mounting | Through Hole |
| Coil Resistance | 400ohm |
| Contact Current | 1A |
| Relay Terminals | Solder |
| Contact Material | Gold |
| Contact Voltage Vdc | 28VDC |
| Contact Configuration | DPDT |
## Datasheet
📄 [Download PDF](https://novapart.co/datasheet/farnell:9906908/)
## **CENTIGRID[®] COMMERCIAL RELAYS DPDT**
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SERIES
172
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|**SERIES**
**DESIGNATION**|**RELAY TYPE**|
|---|---|
|172|DPDT basic relay|
|172D|DPDT relay with internal diode for coil transient suppression|
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INTERNAL CONSTRUCTION
UPPER
STATIONARY UNI-FRAME
CONTACT
bagaatl ARMATURE
NN Lm
LOWER
STATIONARY
CONTACT
MOVING
CONTACT
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## **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:
- 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.
## **ENVIRONMENTAL AND PHYSICAL SPECIFICATIONS**
|**ENVIRONMENTAL AND**
**PHYSICAL SPECIFICATIONS**|**ENVIRONMENTAL AND**
**PHYSICAL SPECIFICATIONS**|**ENVIRONMENTAL AND**
**PHYSICAL SPECIFICATIONS**|
|---|---|---|
|**Temperature**
(Ambient)|**Storage**|–65°C to +125°C|
||**Operating**|–55°C to +85°C|
|**Vibration**
(General Note 1)||10 g’s to 500 Hz|
|**Shock**
(General Note 1)||30 g’s,
6 msec, half-sine|
|**Enclosure**||Hermetically sealed|
|**Weight**||0.15 oz. (4.3g) max.|
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 subminiature RF switch for frequencies well into the UHF spectrum (see Figure 1). Applications include telecommunications, test instruments, mobile communications, attenuators, and automatic test equipment.
SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE www.teledynerelays.com
©2003 TELEDYNE RELAYS 172/1203/Q1
172 Page 91
## **SERIES 172**
## **GENERAL ELECTRICAL SPECIFICATIONS (@25°C) (Notes 2 & 3)**
|**Contact Arrangement**|2 Form C (DPDT)|
|---|---|
|**Rated Duty**|Continuous|
|**Contact Resistance**|0.15 ohm max. before life; 0.3 ohm max. after life at 1A/28Vdc (measured 1/8" from header)|
|**Contact Load Ratings (DC)**
(See Fig. 1 for other DC
resistive voltage/current ratings)|Resistive:
1 Amp/28Vdc
Inductive:
200 mA/28Vdc (320 mH)
Lamp:
100 mA/28Vdc
Low Level:
10 to 50 µA/10 to 50mV|
|**Contact Life Ratings**|5,000,000 cycles (typical) at low level
500,000 cycles (typical) at 0.5A/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|
|**Operate Time**|6.0 msec max. at nominal rated coil voltage|
|**Release Time**|172: 3.0 msec max.
172D: 6.0 msec max.|
|**Intercontact Capacitance**|0.4 pf typical|
|**Insulation Resistance**|1,000 megohms min. between mutually isolated terminals|
|**Dielectric Strength**|Atmospheric pressure: 300 Vrms/60Hz|
|**Negative Coil Transient**172|2.0 Vdc Max.|
|**Diode P.I.V.** 172D|60 Vdc Min.|
## **DETAILED ELECTRICAL SPECIFICATIONS (@25°C) (Note 3)**
||**BASE PART**
**NUMBERS**|**172-5**
**172D-5**|**172-12**
**172D-12**|**172-26**
**172D-26**|
|---|---|---|---|---|
|**Coil Voltage (Vdc)**|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 (Milliwatts)**||405|360|440|
## **OUTLINE DIMENSIONS (Note 4)**
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CASE DETAIL TERMINAL LOCATIONS
(Viewed from Terminals, Numbers for Reference Only)
.750 MIN. . 280 MAX* .031 REF .035 REF
(19.05) (7.11) (.79) (.89)
7 8 1
.335 SQ MAX. 6 2
(8.51) .100 .010 TYP
5 4 3 (2.54 .25)
+.002
.017 DIA–.001 .335
+.05 SQ MAX.
(.43 )–.03 (8.51)
DIMENSIONS ARE SHOWN IN INCHES (MILLIMETERS)
*Unless otherwise specified, 0.280 (7.11) or 0.380 (9.65) height may be supplied. To order the lower profile
exclusively, add /28 to the part number, e.g. 172-26/28 (Note: /28 not marked on part).
PERFORMANCE CURVES (Note 2)
TYPICAL RF PERFORMANCE TYPICAL DC CONTACT RATING (RESISTIVE)
0
.1
.2 300
.3
250
.4
10 1.92 200
20 1.22 150
30 1.07
40 1.02 100
50 1.01 50
60 1.00
70 1.00 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
.01 0.5 .1 .5 1.0
FREQUENCY (GHz) LOAD CURRENT (AMPS DC)
FIGURE 1 FIGURE 2
RETURN LOSS (VSWR)
ISOLATION ACROSS POLES
INSERTION LOSS
ISOLATION ACROSS CONTACTS
dB
VSWR LOAD VOLTAGE (VDC)
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SCHEMATIC DIAGRAM
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172
172D
SCHEMATIC IS VIEWED FROM TERMINALS
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## **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.
©2003 TELEDYNE RELAYS
SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE www.teledynerelays.com
172 Page 92 172/1203/Q1
## Links
- [View this product on Novapart](https://novapart.co/products/172-12/general-purpose-relay-172-series-power-dpdt-12-vdc)
- [Request a quote for this part](https://novapart.co/quote/)
- [Supplier page](https://es.farnell.com/en-ES/teledyne/172-12/relay-dpdt-28vdc-1a/dp/9906908)
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