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
©2009 TELEDYNE RELAYS
712/0909/Q3
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
8
for full P/N example)
Nom.
Max.
Coil Resistance (Ohms ±20% @25°C) (712TN: See Note 4)
Pick-up Voltage (Vdc, Max.) Pulse Operated
712TN
Base Current to Turn On (mAdc, Min.)
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
©2009 TELEDYNE RELAYS
SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE
www.teledynerelays.com
712 Page 94
712/0909/Q3
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.
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
(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
6
and
7)
CENTIGRID
®
AND TO-5
S= 0.187" leads
(Note
6)
Coil Voltage
712 Page 95
SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE
www.teledynerelays.com
©2009 TELEDYNE RELAYS
712/0909/Q3
Appendix A: Spacer Pads
Pad designation and
bottom view dimensions
Ø.150
[3.81]
(REF)
Height
For use with the following:
ER411T
ER412, ER412D, ER412DD
712, 712D, 712TN,
RF300, RF310, RF320
ER420, ER422D, ER420DD, 421,
ER421D, ER421DD, ER422, ER422D,
ER422DD, 722, 722D, RF341
ER431T, ER432T,
ER432, ER432D, ER432DD
732, 732D, 732TN, RF303, RF313,
RF323
RF312
ER411, ER411D, ER411DD
Dim. H
Max.
.295 (7.49)
.300 (7.62)
.305 (7.75)
.400 (10.16)
.410 (10.41)
.350 (8.89)
.295 (7.49)
.400 (10.16)
.300 (7.62)
.410 (10.41)
.305 (7.75)
.300 (7.62)
Dim
H
MAX
“M4” Pad for TO-5
Dim
H
MAX
ER431, ER431D, ER431DD
RF311
“M4” Pad for TO-5
RF331
172, 172D
Dim
H
MAX
ER114, ER114D, ER114DD,
J114, J114D, J114DD
ER134, ER134D, ER134DD,
J134, J134D, J134DD
RF100
.400 (10.16)
.315 (8.00)
.420 (10.67)
.320 (8.13)
.300 (7.62)
.400 (10.16)
.325 (8.25)
.305 (7.75)
“M4” Pad for Centigrid
®
.156
[3.96]
(REF)
RF103
122C, A152
Dim
H
MAX
ER116C, J116C
ER136C, J136C
RF180
.256
[6.5]
(REF)
“M9” Pad for Centigrid
®
A150
Notes:
1. Spacer pad material: Polyester ¿lm.
2. To specify an “M4” or “M9” 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 speci¿ed, tolerance is ± .010 (.25).
5. Add 10 m to the contact resistance show in the datasheet.
6. Add 0.01 oz. (0.25 g) to the weight of the relay assembly shown in the datasheet.
© 2008 Teledyne Relays
SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE
Appendix A: Spreader Pads
Pad designation and
bottom view dimensions
.370 [9.4]
MAX SQ
.100
[2.54]
Height
For use with the following:
ER411T, J411T, ER412, ER412D
ER412DD, J412, J412D, J412DD
ER412T, J412T
712, 712D, 712TN
ER431T, J431T, ER432, ER432D
ER432DD, J432, J432D, J432DD
ER432T, J432T
732, 732D, 732TN
ER420, J420, ER420D, J420D
ER420DD, J420DD, ER421, J421
ER421D, J421D, ER421DD
J422D, ER422DD, J422DD, 722
ER411T
ER412, ER412D, ER412DD
J412, J412D, J412DD
Dim. H
Max.
.388 (9.86)
.393 (9.99)
.493 (12.52)
.503 (12.78)
.398 (10.11)
Dim
H
MAX
.150
[3.81]
.014
[0.36]
(REF)
.300
[7.62]
.100
[2.54]
.200
[5.08]
.370
[9.4]
MIN
“M” Pad 5/ 6/
.390 [9.91]
SQ
.100
[2.54]
.441 (11.20)
.451 (11.46)
.451 (11.46)
.546 (13.87)
.556 (14.12)
.100
[2.54]
.150
[3.81]
.300
[7.62]
Dim
H
MAX
.300
[7.62]
.150
[3.81]
.130
[3.3]
712, 712D
ER421, ER421D, ER421DD
722, 732D
ER431T
ER432, ER432D, ER432DD
732, 732D
ER411, ER411D, ER411DD
ER411TX
ER412X, ER412DX, ER412DDX
ER412TX
712X, 712DX, 712TNX
ER420X, ER420DX, ER420DDX
ER421X, ER421DX, ER421DDX
ER422X, ER422DX
ER422DDX, 722X, 722DDX
ER431, ER431D, ER431DD
ER431TX
ER432X, ER432DX, ER432DDX
ER432TX
732X, 732DX, 732TNX
“M2” Pad 7/ 8/
.370 [9.4]
MAX SQ
.100
[2.54]
.388 (9.86)
.393 (9.99)
.398 (10.11)
Dim
H
MAX
.150
[3.81]
.300
[7.62]
.100
[2.54]
.014
[0.36]
(REF)
.200
[5.08]
.370
[9.4]
MIN
.493 (12.52)
.503 (12.78)
“M3” Pad 5/ 6/ 9/
Notes:
1. Spreader pad material: Diallyl Phthalate.
2. To specify an “M”, “M2” or “M3” spreader pad, refer to the mounting variants portion of the part number example
in the applicable datasheet.
3. Dimensions are in inches (mm).
4. Unless otherwise speci¿ed, tolerance is ± .010” (0.25).
5/. Add 25 m to the contact resistance shown in the datasheet.
6/. Add .01 oz. (0.25 g) to the weight of the relay assembly shown in the datasheet.
7/. Add 50 m to the contact resistance shown in the datasheet.
8/. Add 0.025 oz (0.71 g) to the weight of the relay assembly shown in the datasheet.
9/. M3 pad to be used only when the relay has a center pin (e.g. ER411M3-12A, 722XM3-26.)
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© 2008 Teledyne Relays
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