SERIES RELAY TYPE
722 DPDT basic
The Series 722 magnetic-latching relays are ideally suited for applications
The magnetic-latching TO-5 relay, originally conceived and developed by
where coil power dissipation must be minimized. The relays can be
Teledyne, has become one of the industry standards for low-level switching
operated with a short duration pulse and after the contacts have
from dry circuit to 1 ampere. Designed for high-density PC board mounting,
transferred, no external coil power is required. The magnetic-latching
the 722 relay has become one of the most versatile ultraminiature relays
feature of the Series 722 provides a memory capability, since the relays
available because of its small size and low coil power dissipation.
will not reset upon removal of coil power.
Unique construction features and manufacturing techniques provide
By virtue of its inherently low intercontact capacitance and contact circuit
excellent resistance to environmental extremes and overall high reliability.
losses, the 722 relay has proven to be an excellent ultraminiature RF
switch for frequency ranges well into the UHF spectrum. A typical RF
The 722 feature:
application for the TO-5 relay is in handheld radio transceivers, wherein
the combined features of good RF performance, small size, low coil power
All welded construction.
dissipation and high reliability make it a preferred method of Transmitter-
Unique uni-frame design providing high magnetic efficiency and
Receive switching (see Figure 1).
High force/mass ratios for resistance to shock and vibration.
Advanced cleaning techniques provide maximum assurance of internal
Precious metal alloy contact material with gold plating assures excellent
high current and dry circuit switching capabilities.
65C to +125C
10 gs to 500 Hz
(General Note I)
Shock 30 gs,
(General Note I) 6ms half sine
Enclosure Hermetically sealed
Weight 0.1 oz. (2.9g) max.
2019 TELEDYNE RELAYS (800) 284-7007 www.teledynerelays.com 722 Page 1
GENERAL ELECTRICAL SPECIFICATIONS (@25C)
Contact Arrangement 2 Form C (DPDT)
Rated Duty Continuous
Contact Resistance 0.15 max.; 0.25 max. afterlife at A / 28 Vdc
Resistive: 1 A/ 28 Vdc
Inductive: 200 mA/ 28 Vdc (320mH)
Contact Load Rating (DC)
Lamp: 100 mA / 28 Vdc (320mH)
Low level: 10 to 50 A @ 10 to 50 mV
Resistive: 250 mA / 115Vac, 60 and 400 Hz (Case not grounded)
Contact Load Rating (AC)
100 mA / 115 Vac, 60 and 400 Hz (Case grounded)
10,000,000 cycles (typical) at low level
Contact Life Ratings 1,000,000 cycles (typical) at 0.5 A / 28 Vdc resistive
100,000 cycles min. at all other loads speci ed above
Contact Overload Rating 2 A / 28 Vdc Resistive (100 cycles min.)
Coil Operating Power 290 mW typical at nominal rated voltage
Contact Carry Rating Contact Factory
Operate Time 2.0 msec max. at nominal rated coil voltage
Minimum Operatue Pulse 6.0 ms width @ rated voltage
Intercontact Capacitance 0.4 pf typical
Insulation Resistance 1,000 M min. between mutually isolated terminals
Dielectric Strength 350 Vrms (60 Hz) @ atmospheric pressure
Negative Coil Transient (Vdc) 2.0 Vdc Max.
Diode P.I.V. (Vdc) 60 Vdc Min.
DETAILED ELECTRICAL SPECIFICATIONS (@25C)
722-12 722D-12 722-26 722D-26
BASE PART NUMBERS (722, 722D)
5.0 12.0 26.5
Coil Voltage (Vdc)
Max. 6.0 16.0 32.0
Coil Resistance (Ohms 20%) 61 500 2000
Latch and Reset
3.5 9.0 18.0
722 Page 2 SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE 2019 TELEDYNE RELAYS