SERIES
COMMERCIAL
TO-5 RELAYS
DPDT
712
SERIES
DESIGNATION
712
712D
712TN
DPDT basic relay
RELAY TYPE
DPDT relay with internal diode for coil transient suppression
DPDT relay with internal transistor driver and coil transient suppression diode
INTERNAL CONSTRUCTION
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).
UNI-FRAME
UPPER
STATIONARY
CONTACT
LOWER
STATIONARY
CONTACT
ARMATURE
MOVING
CONTACT
CENTIGRID
®
AND TO-5
ENVIRONMENTAL AND
PHYSICAL SPECIFICATIONS
–65°C to +125°C
Temperature Storage
(Ambient)
Operating
–55°C to +85°C
Vibration
(General Note 1)
Shock
(General Note 1)
Enclosure
Weight
712 Page 93
10 g’s to 500 Hz
30 g’s,
6 msec, half-sine
Hermetically sealed
0.09 oz. (2.6g) max.
SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE
www.teledynerelays.com
©2003 TELEDYNE RELAYS
712/1203/Q1
SERIES 712
GENERAL ELECTRICAL SPECIFICATIONS (@25°C) (Notes 2 & 3)
Contact Arrangement
Rated Duty
Contact Resistance
Contact Load Ratings (DC)
(See Fig. 2 for other DC
resistive voltage/current ratings)
Contact Load Ratings (AC)
2 Form C (DPDT)
Continuous
0.15 ohm max. before life; 0.25 ohm max. after life at 1A/28Vdc (measured 1/8" from header)
Resistive:
Inductive:
Lamp:
Low Level:
Resistive:
1 Amp/28Vdc
200 mA/28Vdc (320 mH)
100 mA/28Vdc
10 to 50 µA/10 to 50mV
250 mA/115Vac, 60 and 400 Hz (Case not grounded)
100 mA/115Vac, 60 and 400 Hz (Case grounded)
Contact Life Ratings
Contact Overload Rating
Contact Carry Rating
Coil Operating Power
Operate Time
Release Time
Intercontact Capacitance
Insulation Resistance
Dielectric Strength
Negative Coil Transient (Vdc)
Diode P.I.V. (Vdc)
712TN Transistor
Characteristics
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
2A/28Vdc Resistive (100 cycles min.)
Contact factory
450 milliwatts typical at nominal rated voltage
4.0 msec max. at nominal rated coil voltage
712: 3.0 msec max. 712D, 712TN: 6.0 msec max.
0.4 pf typical
1,000 megohms min. between mutually isolated terminals
Atmospheric pressure: 350 Vrms/60Hz
712D, 712TN
712D, 712TN
Base Voltage to Turn Off (Vdc)
Emitter-base breakdown Voltage (BV
EBO
) (Vdc)
Collector-base breakdown Voltage (BV
CBO
) (@25°C & lc = 100 µA) (Vdc)
2.0 max
60 min.
0.3 min
6.0 min
60 min
DETAILED ELECTRICAL SPECIFICATIONS (@25°C) (Note 3)
BASE PART
NUMBERS
(See Note 7 for full P/N example)
Nom.
Max.
Coil Resistance (Ohms ±20% @25°C) (712TN: See Note 4)
Pick-up Voltage (Vdc, Max.) Pulse Operated
Base Current to Turn On (mAdc, Min.) (See Note 5)
Coil Voltage (Vdc)
712-5
712D-5
712TN-5
5.0
5.8
50
3.6
3.00
712-6
712D-6
712TN-6
6.0
8.0
98
4.2
2.04
712-9
712D-9
712TN-9
9.0
12.0
220
6.5
1.36
712-12
712D-12
712TN-12
12.0
16.0
390
8.4
1.03
712-18
712D-18
712TN-18
18.0
24.0
880
13.0
0.68
712-26
712D-26
712TN-26
26.5
32.0
1560
17.0
0.50
PERFORMANCE CURVES (Note 2)
CENTIGRID
®
AND TO-5
TYPICAL RF PERFORMANCE
TYPICAL DC CONTACT RATING (RESISTIVE)
0
.1
.2
.3
.4
dB
INS
ERT
ION
LOS
S
300
LOAD VOLTAGE (VDC)
250
200
150
100
50
10
20
30
40
50
60
70
.01
0.5
.1
.5
1.0
FREQUENCY (GHz)
1.92
R)
S (VSW
N LOS
S
TACT
CON
OSS
R
ES
N AC
POL
ATIO
OSS
ISOL
ACR
N
ATIO
ISOL
R
RETU
1.22
1.02
1.01
1.00
1.00
VSWR
1.07
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 1
FIGURE 2
©2003 TELEDYNE RELAYS
SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE
www.teledynerelays.com
712 Page 94
712/1203/Q1
SERIES 712
OUTLINE DIMENSIONS
CASE DETAIL
.370
(9.40)
DIA. MAX.
.335
(8.51)
DIA. MAX.
TERMINAL LOCATIONS AND PIN NUMBERING (REF. ONLY)
(Viewed from Terminals)
.031 (.79)
± .003 (0.08)
TRANSISTOR BASE
CONNECTION FOR
712TN ONLY
SCHEMATIC DIAGRAM
10
9
1
2
3
6
5
4
712
.035 (.89)
± .010 (0.25)
.275 (6.99) MAX.
.200 (5.08)
± .010 (.25) DIA.
WIRE LEAD: .75 (19.05) MIN.
8
7
36° ±3°
TYP.
712D
712TN
+.002 (.05)
.017 (.43) –.001 (.03) DIA.
DIMENSIONS ARE SHOWN IN INCHES (MILLIMETERS)
SCHEMATICS ARE VIEWED FROM TERMINALS
TYPICAL LOGIC INTERFACE
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. Applicable to all coil voltages. See Base current to turn on.
6. Circuit is typical for all Series 712TN. Values shown are for 712TN-5 relay and
apply for full temperature range.
7. The slash and characters appearing after the slash are not marked on the relay.
8. Unless otherwise specified, relays will be supplied with either gold-plated or
solder-coated leads.
9.
Vcc
(See Note 5)
Vr
Pin 1
Notes:
Logic 1 activates the relay.
Logic 0 de-activates the relay.
Vcc = logic bias power.
Vr = coil energization voltage.
Logic element
1 = 0.50 to 3.00mA
0 = 0.3Vdc min.
Pin 10
Pin 9
Teledyne Part Numbering System for Commercial Relays
712 X
M - 26 / S
Q
Relay Series
Optional Ground Pin
(See Appendix )
Pad Option
(See Appendix)
Q= Solder Coated Leads
G= Gold Plated Leads
(Notes 7 and 8)
CENTIGRID
®
AND TO-5
S= 0.187" leads
(Note 7)
Coil Voltage
712 Page 95
SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE
www.teledynerelays.com
©2003 TELEDYNE RELAYS
712/1203/Q1
Spacer Pads
APPENDIX
Relay Options Page 119
SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE
www.teledynerelays.com
©2003 TELEDYNE RELAYS
ROP/1203/Q1
Spreader Pads
APPENDIX
©2003 TELEDYNE RELAYS
SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE
www.teledynerelays.com
Relay Options Page 120
ROP/1203/Q1
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