SERIES
412
ESTABLISHED RELIABILITY
TO-5 RELAYS
DPDT
SERIES
RELAY TYPE
DESIGNATION
412 DPDT basic relay
412D DPDT relay with internal diode for coil suppression
DPDT relay with internal diodes for coil transient suppression and polarity
412DD
reversal protection
DPDT relay with internal transistor driver and coil transient suppression
412T
diode
INTERNAL CONSTRUCTION DESCRIPTION
The TO-5 relay, originally conceived and developed by Teledyne, has become
UNI-FRAME
UPPER
one of the industry standards for low-level switching from dry circuit to 1
STATIONARY
CONTACT
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
ARMATURE
ultraminiature relays available.
LOWER
STATIONARY
CONTACT
The following unique construction features and manufacturing techniques
provide excellent resistance to environmental extremes and overall high
reliability.
MOVING
CONTACT
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.
ENVIRONMENTAL AND
The Series 412D and 412DD relays have internal discrete silicon diodes for
PHYSICAL SPECIFICATIONS
coil suppression and polarity reversal protection. The hybrid 412T relay
Temperature
features an internal silicon suppression diode and transistor driver. This hybrid
65C to +125C
(Ambient)
package reduces required PC board floor space by reducing the number of
external components needed to drive the relay.
Vibration
30 gs to 3000 Hz
(General Note 1)
By virtue of its inherently low intercontact capacitance and contact circuit
Shock 75 gs,
losses, the 412 relay has proven to be an excellent ultraminiature RF switch
(General Note 1) 6 msec, half-sine
for frequency ranges well into the UHF spectrum. A typical RF application for
Acceleration 50 gs
the TO-5 relay is in handheld radio transceivers, wherein the combined
features of good RF performance, small size, low coil power dissipation and
Enclosure Hermetically sealed
high reliability make it a preferred method of T-R switching (see Figure 1).
Weight 0.09 oz. (2.55g) max.
2003 TELEDYNE RELAYS SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE 412 Page 1
www.teledynerelays.com 412/1203/Q1
ESTABLISHED RELIABILITYESTABLISHED RELIABILITY
INSERTION LOSS
SERIES 412
GENERAL ELECTRICAL SPECIFICATIONS (65C to +125C unless otherwise noted) (Notes 2 & 3)
Contact Arrangement 2 Form C (DPDT)
Rated Duty Continuous
Contact Resistance 0.1 ohm max. before life; 0.2 ohm max. after life at 1A/28Vdc (measured 1/8" from header)
Resistive: 1 Amp/28Vdc
Contact Load Ratings (DC)
Inductive: 200 mA/28Vdc (320 mH)
(See Fig. 2 for other DC
Lamp: 100 mA/28Vdc
resistive voltage/current ratings)
Low Level: 10 to 50 A/10 to 50mV
Resistive: 250 mA/115Vac, 60 and 400 Hz (Case not grounded)
Contact Load Ratings (AC)
100 mA/115Vac, 60 and 400 Hz (Case grounded)
10,000,000 cycles (typical) at low level
Contact Life Ratings 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 @ 25C
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 (BVEBO) (@25C) (Vdc) 6.0 min.
Characteristics
Collector-base breakdown Voltage (BVEBO) (@25C & lc = 100 A) (Vdc) 75 min.
DETAILED ELECTRICAL SPECIFICATIONS (65C to +125C unless otherwise noted) (Note 3)
412-5 412-6 412-9 412-12 412-18 412-26
BASE PART
412D-5 412D-6 412D-9 412D-12 412D-18 412D-26
NUMBERS
412DD-5 412DD-6 412DD-9 412DD-12 412DD-18 412DD-26
(See Note 10 for full P/N example)
412T-5 412T-6 412T-9 412T-12 412T-18 412T-26
Nom. 5.0 6.0 9.0 12.0 18.0 26.5
Coil Voltage (Vdc)
Max. 5.8 8.0 12.0 16.0 24.0 32.0
412, 412D, 412T (Note 4) 50 98 220 390 880 1560
Coil Resistance
(Ohms 10% @25C)
412DD (Note 4) 39 78 220 390 880 1560
Min. 93.2 58.3 33.0 25.6 17.5 14.8
Coil Current (mAdc @25C)
(412DD Series)
Max. 128.2 78.3 42.9 32.8 22.1 18.5
Min. 82.2 52.9 35.3 26.6 17.9 14.7
Coil Current (mAdc @25C)
(Note 7)
(412T Series)
Max. 112.1 69.9 47.4 35.8 24.0 19.8
412, 412D 3.5 4.5 6.8 9.0 13.5 18.0
Pick-up Voltage (Vdc, Max.)
412DD 3.9 5.2 7.8 10.0 14.5 19.0
412T (Note 7) 3.5 4.5 6.8 9.0 13.5 18.0
Base Current to Turn On (mAdc, Max.) (412T Series) (Note 7) 3.00 2.04 1.36 1.03 0.68 0.50
Min. 0.14 0.18 0.35 0.41 0.59 0.89
412, 412D, 412T
Max. 2.3 3.2 4.9 6.5 10.0 13.0
Drop-out Voltage (Vdc)
Min. 0.6 0.7 0.8 0.9 1.1 1.4
412DD
Max. 2.8 3.4 5.3 6.5 10.0 13.0
PERFORMANCE CURVES
TYPICAL DC CONTACT RATING (RESISTIVE)
TYPICAL RF PERFORMANCE
(NOTE 2)
0
.1
300
.2
250
.3
.4
200
10 1.92
20 1.22
150
30 1.07
100
40 1.02
50 1.01
50
60 1.00
70 1.00
.01 0.5 .1 .5 1.0 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
FREQUENCY (GHz) LOAD CURRENT (AMPS DC)
FIGURE 1 FIGURE 2
412 Page 2 SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE 2003 TELEDYNE RELAYS
www.teledynerelays.com 412/1203/Q1
RETURN LOSS (VSWR)
ISOLATION ACROSS CONTACTS
ISOLATION ACROSS POLES
dB
VSWR
LOAD VOLTAGE (VDC)