712 Page 93 SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE ©2009 TELEDYNE RELAYS
www.teledynerelays.com 712/0909/Q3
CENTIGRID®AND TO-5
SERIES
712
COMMERCIAL
TO-5 RELAYS
DPDT
DESCRIPTION
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 for high-density PC board mounting, the Series 712 relays
are some of the most versatile ultraminiature relays available because of their
small size and low coil power dissipation.
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 Series 712D relay has an internal discrete silicon diode for coil transient
suppression. The hybrid Series 712TN relay has an internal silicon diode and
transistor driver. The integrated packaging of the relay with its associated
semiconductor devices greatly reduces PC board floor space requirements as
well as component installation costs.
By virtue of its inherently low intercontact capacitance and contact circuit
losses, the 712 has proven to be excellent ultraminiature RF switch for
frequency ranges well into the UHF spectrum. A typical RF application for the
TO-5 relay is in handheld 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 Transmit-Receive switching (see Figure 1).
INTERNAL CONSTRUCTION
UPPER
STATIONARY
CONTACT
LOWER
STATIONARY
CONTACT
UNI-FRAME
ARMATURE
MOVING
CONTACT
SERIES
DESIGNATION RELAY TYPE
712 DPDT basic relay
712D DPDT relay with internal diode for coil transient suppression
712TN DPDT relay with internal transistor driver and coil transient suppression diode
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 0.09 oz. (2.6g) max.
©2009 TELEDYNE RELAYS SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE 712 Page 94
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CENTIGRID®AND TO-5
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
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
TYPICAL DC CONTACT RATING (RESISTIVE)
LOAD VOLTAGE (VDC)
dB
RETURN LOSS (VSWR)
INSERTION LOSS
ISOLATION ACROSS CONTACTS
ISOLATION ACROSS POLES
SERIES 712
GENERAL ELECTRICAL SPECIFICATIONS (@25°C) (Notes 2 & 3)
DETAILED ELECTRICAL SPECIFICATIONS (@25°C) (Note 3)
Contact Arrangement 2 Form C (DPDT)
Rated Duty Continuous
Contact Resistance 0.15 ohm max. before life; 0.25 ohm max. after life at 1A/28Vdc (measured 1/8" from header)
Contact Load Ratings (DC)
(See Fig. 2 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 Load Ratings (AC) Resistive: 250 mA/115Vac, 60 and 400 Hz (Case not grounded)
100 mA/115Vac, 60 and 400 Hz (Case grounded)
Contact Life Ratings 10,000,000 cycles (typical) at low level
1,000,000 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
Coil Operating Power 450 milliwatts typical at nominal rated voltage
Operate Time 4.0 msec max. at nominal rated coil voltage
Release Time 712: 3.0 msec max. 712D, 712TN: 6.0 msec max.
Intercontact Capacitance 0.4 pf typical
Insulation Resistance 1,000 megohms min. between mutually isolated terminals
Dielectric Strength Atmospheric pressure: 350 Vrms/60Hz
Negative Coil Transient (Vdc) 712D, 712TN 2.0 max
Diode P.I.V. (Vdc) 712D, 712TN 60 min.
712TN Transistor
Characteristics
Base Voltage to Turn Off (Vdc) 0.3 min
Emitter-base breakdown Voltage (BVEBO) (Vdc) 6.0 min
Collector-base breakdown Voltage (BVCBO) (@25°C & lc = 100 µA) (Vdc) 60 min
PERFORMANCE CURVES (Note 2)
BASE PART
NUMBERS
(See Note 8 for full P/N example)
712-5
712D-5
712TN-5
712-6
712D-6
712TN-6
712-9
712D-9
712TN-9
712-12
712D-12
712TN-12
712-18
712D-18
712TN-18
712-26
712D-26
712TN-26
Coil Voltage (Vdc) Nom. 5.0 6.0 9.0 12.0 18.0 26.5
Max. 5.8 8.0 12.0 16.0 24.0 32.0
Coil Resistance (Ohms ±20% @25°C) (712TN: See Note 4) 50 98 220 390 880 1560
Pick-up Voltage (Vdc, Max.) Pulse Operated 3.6 4.2 6.5 8.4 13.0 17.0
712TN Base Current to Turn On (mAdc, Min.)3.00 2.04 1.36 1.03 0.68 0.50
712 Page 95 SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE ©2009 TELEDYNE RELAYS
www.teledynerelays.com 712/0909/Q3
CENTIGRID®AND TO-5
10
1
2
3
4
5
6
7
8
9
DIMENSIONS ARE SHOWN IN INCHES (MILLIMETERS)
.370
(9.40)
DIA. MAX.
.335
(8.51)
DIA. MAX.
.275 (6.99) MAX.
+.002 (.05)
.017 (.43) –.001 (.03) DIA.
TRANSISTOR BASE
CONNECTION FOR
712TN ONLY
WIRE LEAD: .75 (19.05) MIN.
TERMINAL LOCATIONS AND PIN NUMBERING (REF. ONLY)
(Viewed from Terminals)CASE DETAIL
.035 (.89)
± .010 (0.25)
.031 (.79)
± .003 (0.08)
36° ±3°
TYP.
.200 (5.08)
± .010 (.25) DIA.
712
712D
SCHEMATICS ARE VIEWED FROM TERMINALS
712TN
SERIES 712
OUTLINE DIMENSIONS SCHEMATIC DIAGRAM
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. For Reference Only. Coil resistance not directly measurable on 712TN relays.
5. Circuit is typical for all Series 712TN. Values shown are for 712TN-5 relay and
apply for full temperature range. Limit base-emitter current to 15 mADC
6. The slash and characters appearing after the slash are not marked on the relay.
7. Unless otherwise specified, relays will be supplied with either gold-plated or
solder-coated leads.
8.
Vcc Vr
Notes:
Logic 1 activates the relay.
Logic 0 de-activates the relay.
Vcc = logic bias power.
Vr = coil energization voltage.
Pin 10
Pin 9
Pin 1
Logic element
1 = 0.50 to 3.00mA
0 = 0.3Vdc min.
TYPICAL LOGIC INTERFACE
(See Note 5)
Teledyne Part Numbering System for Commercial Relays
712 X M - 26 / S Q
Pad Option
(See Appendix)
Relay Series
Optional Ground Pin
(See Appendix )
Coil Voltage
Q= Solder Coated Leads
G= Gold Plated Leads
(Notes 6 and 7)
S= 0.187" leads
(Note 6)
