SERIES
ESTABLISHED RELIABILITY
TO-5 RELAYS
DPDT
412
ESTABLISHED RELIABILITY
SERIES
DESIGNATION
412
412D
412DD
412T
DPDT basic relay
RELAY TYPE
DPDT relay with internal diode for coil suppression
DPDT relay with internal diodes for coil transient suppression and polarity
reversal protection
DPDT relay with internal transistor driver and coil transient suppression
diode
INTERNAL CONSTRUCTION
UNI-FRAME
UPPER
STATIONARY
CONTACT
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 expressly for high-density PC board mounting, its small size
and low coil power dissipation make the 412 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 412D and 412DD relays have internal discrete silicon diodes for
coil suppression and polarity reversal protection. The hybrid 412T 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 412 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).
ARMATURE
LOWER
STATIONARY
CONTACT
MOVING
CONTACT
ENVIRONMENTAL AND
PHYSICAL SPECIFICATIONS
Temperature
(Ambient)
Vibration
(General Note 1)
Shock
(General Note 1)
Acceleration
Enclosure
Weight
©2003 TELEDYNE RELAYS
–65°C to +125°C
30 g’s to 3000 Hz
75 g’s,
6 msec, half-sine
50 g’s
Hermetically sealed
0.09 oz. (2.55g) max.
SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE
www.teledynerelays.com
412 Page 56
412/1203/Q1
SERIES 412
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)
Contact Life Ratings
2 Form C (DPDT)
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)
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
ESTABLISHED RELIABILITY
Contact Overload Rating
2A/28Vdc Resistive (100 cycles min.)
Contact Carry Rating
Contact factory
Coil Operating Power
450 milliwatts typical at nominal rated voltage @ 25°C
Operate Time
2.0 msec max. at nominal rated coil voltage
Release Time
412 Series: 1.5 msec max. 412D, 412DD Series: 4.0 msec max. 412T Series: 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
Dielectric Strength
Atmospheric pressure: 500 Vrms/60Hz
70,000 ft.: 125 Vrms/60Hz
Negative Coil Transient (Vdc)
412D, 412DD, 412T
1.0 max
Diode P.I.V. (Vdc)
412D, 412DD, 412T
100 min.
Base Turn Off Voltage (Vdc)
0.3 min.
412T
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.
412, 412D, 412T (Note 4)
Coil Resistance
(Ohms ±10% @25°C)
412DD (Note 4)
Min.
Coil Current (mAdc @25°C)
(412DD Series)
Max.
Min.
Coil Current (mAdc @25°C)
(Note 7)
(412T Series)
Max.
412, 412D
Pick-up Voltage (Vdc, Max.)
412DD
412T (Note 7)
Base Current to Turn On (mAdc, Max.)
(412T Series) (Note 7)
Min.
412, 412D, 412T
Max.
Drop-out Voltage (Vdc)
Min.
412DD
Max.
Coil Voltage (Vdc)
412-5
412D-5
412DD-5
412T-5
5.0
5.8
50
39
93.2
128.2
82.2
112.1
3.5
3.9
3.5
3.00
0.14
2.3
0.6
2.8
412-6
412D-6
412DD-6
412T-6
6.0
8.0
98
78
58.3
78.3
52.9
69.9
4.5
5.2
4.5
2.04
0.18
3.2
0.7
3.4
412-9
412D-9
412DD-9
412T-9
9.0
12.0
220
220
33.0
42.9
35.3
47.4
6.8
7.8
6.8
1.36
0.35
4.9
0.8
5.3
412-12
412D-12
412DD-12
412T-12
12.0
16.0
390
390
25.6
32.8
26.6
35.8
9.0
10.0
9.0
1.03
0.41
6.5
0.9
6.5
412-18
412D-18
412DD-18
412T-18
18.0
24.0
880
880
17.5
22.1
17.9
24.0
13.5
14.5
13.5
0.68
0.59
10.0
1.1
10.0
412-26
412D-26
412DD-26
412T-26
26.5
32.0
1560
1560
14.8
18.5
14.7
19.8
18.0
19.0
18.0
0.50
0.89
13.0
1.4
13.0
PERFORMANCE CURVES
TYPICAL RF PERFORMANCE
(NOTE 2)
0
.1
.2
.3
.4
dB
INS
ER
TIO
N
LO
S
TYPICAL DC CONTACT RATING (RESISTIVE)
300
S
LOAD VOLTAGE (VDC)
250
200
150
100
50
10
20
30
40
50
60
70
.01
0.5
.1
.5
1.0
R)
S (VSW
N LOS
CTS
NTA
S
S CO
OLE
ROS
SS P
N AC
CRO
ATIO
NA
ISOL
ATIO
ISOL
RETUR
1.92
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
FIGURE 1
412 Page 57
FREQUENCY (GHz)
FIGURE 2
LOAD CURRENT (AMPS DC)
SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE
www.teledynerelays.com
©2003 TELEDYNE RELAYS
412/1203/Q1
SERIES 412
OUTLINE DIMENSIONS
.370
(9.40)
DIA. MAX.
.335
(8.51)
DIA. MAX.
.035 (.89)
±
.010 (0.25)
.270 (6.86) MAX.
7
WIRE LEAD: .75 (19.05) MIN.
PIN: .187 (4.75)
±.010
(.25)
(See Note 6)
.200 (5.08)
±
.010 (.25) DIA.
36°
±3°
TYP.
6
5
4
412D
412T
TERMINAL LOCATIONS AND PIN NUMBERING (REF. ONLY)
(Viewed from Terminals)
.031 (.79)
±
.003 (0.08)
TRANSISTOR BASE
CONNECTION FOR
412T ONLY
8
10
9
1
2
3
SCHEMATIC DIAGRAMS
412
412DD
ESTABLISHED RELIABILITY
+.002 (.05)
.017 (.43) –.001 (.03) DIA.
DIMENSIONS ARE SHOWN IN INCHES (MILLIMETERS)
SCHEMATICS ARE VIEWED
FROM TERMINALS
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. 412DD and 412T 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.
Logic element
1 = 0.50 to 3.00mA
0 = 0.3Vdc min.
Pin 10
Pin 9
2
Teledyne Part Numbering System for
T R
® Established Reliability Relay
ER
412 Y
M - 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
412 Y
M - 26 P
L
Screening and Reliability
Level
Terminal Variant
P = 0.187"
Coil Voltage
Military (JAN)
Designator
Relay Series
Optional Ground Pin
(See Appendix)
Spreader Option
(See Appendix)
©2003 TELEDYNE RELAYS
SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE
www.teledynerelays.com
412 Page 58
412/1203/Q1
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APPENDIX
Relay Options Page 119
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ROP/1203/Q1
Spreader Pads
APPENDIX
©2003 TELEDYNE RELAYS
SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE
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ROP/1203/Q1
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