SERIES
ESTABLISHED RELIABILITY
TO-5 RELAYS
SENSITIVE SPDT
431
ESTABLISHED RELIABILITY
SERIES
DESIGNATION
431
431D
431DD
431T
SPDT basic relay
RELAY TYPE
SPDT relay with internal diode for coil suppression
SPDT relay with internal diodes for coil transient suppression and polarity
reversal protection
SPDT 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, its small size and low
coil power dissipation make the 431 relay one of the most versatile
ultraminiature relays available.
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 431D and 431DD relays have internal discrete silicon diodes for
coil suppression and polarity reversal protection. The hybrid 431T relay
features an internal silicon suppression diode and transistor driver. This hybrid
package reduces required PC board floor space by reducing the number of
external components needed to drive the relay.
By virtue of its inherently low intercontact capacitance and contact circuit
losses, the 431 relay has proven to be an 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 T-R switching (see Figure 1).
UNI-FRAME
UPPER
STATIONARY
CONTACT
ARMATURE
LOWER
STATIONARY
CONTACT
MOVING
CONTACT
ENVIRONMENTAL AND
PHYSICAL SPECIFICATIONS
Temperature
(Ambient)
Vibration
(General Note 1)
Shock
(General Note 1)
Acceleration
Enclosure
Weight
431 Page
1
–65°C to +125°C
30 g’s to 3000 Hz
75 g’s,
6 msec, half-sine
50 g’s
Hermetically sealed
0.109 oz. (3.09g) max.
SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE
www.teledynerelays.com
©2003 TELEDYNE RELAYS
431/1203/Q1
SERIES 431
GENERAL ELECTRICAL SPECIFICATIONS (–65°C to +125°C unless otherwise noted) (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)
1 Form C (SPDT)
Continuous
0.1 ohm max. before life; 0.2 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)
ESTABLISHED RELIABILITY
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
150 milliwatts typical at nominal rated voltage @ 25°C
Operate Time
431, 431D, 431DD Series: 4.0 msec max. at nominal rated coil voltage 431T: 3.5 msec (Note 8)
Release Time
431 Series: 2.5 msec max. 431D, 431DD, 431T: 7.5 msec max.
Contact Bounce
1.5 msec max.
Intercontact Capacitance
0.4 pf typical
Insulation Resistance
10,000 megohms min. between mutually isolated terminals
70,000 ft.: 300 Vrms/60Hz (431T: 125 Vrms/60 Hz)
Dielectric Strength
Atmospheric pressure: 500 Vrms/60Hz
Negative Coil Transient (Vdc)
431D, 431DD, 431T
1.0 max
Diode P.I.V. (Vdc)
431D, 431DD, 431T
100 min.
Base Turn Off Voltage (Vdc)
0.3 min.
431T
Transistor
Emitter-base breakdown Voltage (BV
EBO
) (@25°C) (Vdc)
6.0 min.
Characteristics
Collector-base breakdown Voltage (BV
EBO
) (@25°C & lc = 100 μA) (Vdc)
75 min.
DETAILED ELECTRICAL SPECIFICATIONS (–65°C to +125°C unless otherwise noted) (Note 3)
BASE PART
NUMBERS
(See Note 10 for full P/N example)
Nom.
Max.
431, 431D, 431T (Note 4)
Coil Resistance
(Ohms ±10% @25°C)
431DD (Note 4)
Min.
Coil Current (mAdc @25°C)
(431DD Series)
Max.
Min.
Coil Current (mAdc @25°C)
(Note 7)
(431T Series)
Max.
431, 431D
Pick-up Voltage (Vdc, Max.)
431DD
431T (Note 7)
Base Current to Turn On (mAdc, Max.)
(431T Series) (Note 7)
Min.
431, 431D,
431T (Note 7)
Max.
Drop-out Voltage (Vdc)
Min.
431DD
Max.
Coil Voltage (Vdc)
431-5
431D-5
431DD-5
431T-5
5.0
8.0
125
100
36.3
50.0
34.7
47.8
3.7
4.5
3.6
1.2
0.15
2.0
0.15
2.4
431-6
431D-6
431DD-6
431T-6
6.0
11.0
255
200
22.7
30.6
21.2
27.7
4.5
5.5
4.8
0.78
0.18
2.8
0.18
2.8
431-9
431D-9
431DD-9
431T-9
9.0
16.0
630
630
11.5
15.0
11.8
16.8
6.8
7.8
7.8
0.48
0.35
4.2
0.35
4.2
431-12
431D-12
431DD-12
431T-12
12.0
22.0
1025
1025
9.7
12.5
10.1
13.6
9.0
10.0
10.0
0.39
0.41
5.6
0.40
5.6
431-18
431D-18
431DD-18
431T-18
18.0
33.0
2300
2300
6.7
8.5
6.7
9.1
13.5
14.5
14.5
0.26
0.58
8.4
0.58
8.4
431-26
431D-26
431DD-26
431T-26
26.5
45.0
4000
4000
5.7
7.2
5.7
7.7
18.0
19.0
19.0
0.20
0.89
10.4
0.89
10.4
PERFORMANCE CURVES
0
(NOTE 2)
.1
.2
.3
.4
.5
.6
dB
TYPICAL RF PERFORMANCE
431T
TYPICAL DC CONTACT RATING (RESISTIVE)
431
, 43
1D,
431
DD
INS
300
LOAD VOLTAGE (VDC)
VSWR
ER
TIO
NL
OS
S
250
200
150
100
50
10
20
30
40
50
60
70
431, 431D
, 431DD
1.92
RETURN LOSS (VSWR)
1.22
1.07
1.02
1.01
1.00
1.00
.5
1.0
431T
431T
ISOL
,
31D
431D
D
N
ATIO
4
431,
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
FIGURE 1
©2003 TELEDYNE RELAYS
.01
0.5
.1
LOAD CURRENT (AMPS DC)
FREQUENCY (GHz)
FIGURE 2
431 Page
2
431/1203/Q1
SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE
www.teledynerelays.com
SERIES 431
OUTLINE DIMENSIONS
CASE DETAIL
.370
(9.40)
DIA.MAX.
.335
(8.51)
DIA.MAX.
LEAD & PIN LOCATIONS
(Viewed from Terminals)
.031 (.79)
±
.003 (0.08)
.200 (5.08)
±
.010 (.25) DIA.
PIN NUMBERS
(For reference only)
SCHEMATIC DIAGRAMS
9
8
7
6
431T
1
2
3
4
431T
431
431DD
.035 (.89)
±
.010 (0.25)
.375 (9.52) MAX.
5 LEADS
WIRE LEAD: .75 (19.05) MIN.
PIN: .187 (4.75)
±
. 010 (.25)
(See Note 6)
45°
±3°
TYP.
36°
±3°
TYP.
4
8 LEADS
1
5
2
431
431D
3
431T
431, 431D, 431DD
ESTABLISHED RELIABILITY
+.002(.05)
.017 (.43) ±.001(.03) DIA.
SCHEMATICS ARE VIEWED FROM TERMINALS
DIMENSIONS ARE SHOWN IN INCHES (MILLIMETERS)
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 at relay terminals due
to internal series semiconductor. 431DD and 431T only.
5. Unless otherwise specified, relays will be supplied with either gold-plated or
solder-coated leads.
6. The slash and characters appearing after the slash are not marked on the relay.
7. Limit Base Emitter current to 15 mAdc.
8. Applicable to all coil voltages. See Base current to turn on.
9. Screened HI-REL versions available. Contact factory.
10.
TYPICAL LOGIC INTERFACE
(See Note 8)
Vcc
Vr
Pin 1
Notes:
Logic 1 activates the relay.
Logic 0 de-activates the relay.
Vcc = logic bias power.
Vr = coil energization voltage.
Pin 4
Logic element
1 = 0.20 to 1.20mA
0 = 0.3Vdc min.
Pin 2
Pin 3
2
Teledyne Part Numbering System for
T R
® Established Reliability Relay
ER
431 Y
M3 - 26
A / S Q
Q= Solder Coated Leads
G= Gold Plated Leads
(Notes 5 and 6)
S= .187" leads
(Note 6)
Screening and Reliability
Level
Coil Voltage
Established Reliability
Designator
Relay Series
Optional Ground Pin
(See Appendix)
Pad Option
(See Appendix)
Teledyne Part Numbering System for Military Qualified (JAN) Relays
J
431
M3 - 26
P
L
Screening and Reliability
Level
Terminal Variant
P = 0.187"
Coil Voltage
Military (JAN)
Designator
Relay Series
Pad Option
(See Appendix)
431 Page
3
SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE
www.teledynerelays.com
©2003 TELEDYNE RELAYS
431/1203/Q1
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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