CENTIGRID
®
MAGNETIC-LATCHING
COMMERCIAL RELAYS
DPDT
CMOS COMPATIBLE
SERIES
DESIGNATION
122C
RELAY TYPE
DPDT general-purpose magnetic-latching relay with internal power
MOSFET driver and diode coil transient suppression
SERIES
122C
DESCRIPTION
The 122C Centigrid
®
magnetic-latching relay is an ultraminiature,
hermetically sealed, armature relay capable of being directly driven
by most IC logic families. Its low profile height and .100” grid spaced
terminals, which precludes the need for spreader pads, make it ideal
for applications where extreme packaging density and/or close PC
board spacing are required.
The basic operating function and internal structure are similar to
Teledyne’s TO-5, 422 relay series. The 122C is capable of meeting
Teledyne Relays’ T
2
R
®
requirements. The following unique
construction features and manufacturing techniques provide overall
high reliability and excellent resistance to environmental extremes:
• All welded construction.
• Unique uni-frame design providing high magnetic efficiency and
mechanical rigidity.
• High force/mass ratios to withstand 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 122C relay has internal silicon diodes for coil
suppression, Zener diodes to protect the MOSFET gate inputs, and
N-channel enhancement-mode MOSFET chips, which enable direct
relay interfacing with most microprocessor and IC logic families
(CMOS, TTL and MOS).
The 122C magnetic-latching relay is ideally suited for applications
where coil operating power must be minimized. The relays can be
operated with a short-duration pulse. After the contacts have
transferred, no external coil power is required.
The magnetic-latching feature of the Series 122C relay provides a
“memory” capability, since the relays will not reset upon removal of
coil power.
By virtue of its inherently low intercontact capacitance and contact
circuit losses, the 122C relay has proven to be an excellent
ultraminiature RF switch for frequency ranges well into the UHF
spectrum. A typical RF application for this Centigrid
®
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).
CENTIGRID
®
AND TO-5
PRINCIPLE OF OPERATION
PERMANENT MAGNET
MAGNETIC CIRCUIT B
MAGNETIC CIRCUIT A
SOFT IRON CORE A
SOFT IRON FRAME
Energizing Coil B produces a magnetic field
COIL A
COIL B
opposing the holding flux of the permanent
magnet in Circuit B. As this net holding force
decreases, the attractive force in the air gap of
AIR GAP
STATIONARY
Circuit A, which also results from the flux of the
CONTACT
permanent magnet, becomes great enough to
break the armature free of Core B, and snap it
SOFT IRON
MOVING
ARMATURE
CONTACT
into a closed position against Core A. The
armature then remains in this position upon removal of energy from Coil B, but will snap
back to position B upon energizing Coil A. Since operation depends upon cancellation
of a magnetic field, it is necessary to apply the correct polarity to the relay coils as
indicated on the relay schematic. When latching relays are installed in equipment, the
latch and reset coils should not be pulsed simultaneously. Coils should not be pulsed
with less than rated coil voltage and the pulse width should be a minimum of three times
the specified operate time of the relay. If these conditions are not followed, it is possible
for the relay to be in the magnetically neutral position.
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)
Acceleration
Enclosure
Weight
30 g’s to 3000 Hz
100 g’s,
6 msec, half-sine
50 g’s
Hermetically sealed
0.10 oz. (2.75g) max.
122C Page
122C/1203/Q1
©2003 TELEDYNE RELAYS
SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE
www.teledynerelays.com
SERIES 122C
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
Contact Overload Rating
Contact Carry Rating
Operate Time
Contact Bounce
Minimum Operate Pulse
Intercontact Capacitance
Insulation Resistance (Note 4)
Dielectric Strength (Note 4)
Negative Coil Transient (Vdc)
Diode P.I.V. (Vdc)
Zener Voltage (Vdc)
Zener Leakage Current @ 15.2 Vdc (µA)
Gate Voltage to Turn Off (Vdc)
Power FET
Characteristics
Gate Voltage to Turn On (Vdc)
–65°C to +125°C
Drain-Source (Vdc)
BASE PART
NUMBERS
(See Notes 3, 10)
Coil Voltage (Vdc)
Coil Current (mAdc @25°C)
(Note 9)
Coil Operating Power @25°C
and Rated Voltage (mW)
Latch and Reset Voltage
(Vdc)
Nom.
Max.
Max.
Min.
Nom.
Max.
2 Form C (DPDT)
Continuous
0.125 ohm max. before life; 0.225 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
2A/28Vdc Resistive (100 cycles min.)
Contact factory
1.5 msec max. at nominal rated coil voltage @ 25°C
2.0 msec max.
4.5 msec width @ rated voltage
0.4 pf typical
10,000 megohms min. between mutually isolated terminals
Atmospheric pressure: 500 Vrms/60Hz
70,000 ft.: 125 Vrms/60Hz
1.0 max.
100 min.
17 min. to 23 max.
2.5 max.
0.5 max.
3.8 min (Note 8)
55 max.
122C-5
5.0
5.6
114.9
82.2
505
3.5
122C-6
6.0
8.0
57.0
41.6
296
4.5
122C-9
9.0
12.0
37.2
27.4
288
6.8
122C-12
12.0
16.0
27.8
20.5
287
9.0
122C-18
18.0
24.0
18.2
13.7
286
13.5
122C-26
26.5
32.0
15.2
11.4
351
CENTIGRID
®
AND TO-5
18.0
PERFORMANCE CURVES
(NOTE 2)
0
.1
.2
.3
.4
dB
TYPICAL RF PERFORMANCE
TYPICAL DC CONTACT RATING (RESISTIVE)
INSERT
ION LO
SS
300
LOAD VOLTAGE (VDC)
250
200
150
100
50
10
20
30
40
50
60
70
.01
1.92
)
(VSWR
1.07
N LOSS
RETUR
ACTS
1.02
NT
S CO
ROS
1.01
N AC
ATIO
LES
ISOL
SS PO
1.00
CRO
TION A
ISOLA
1.22
VSWR
1.00
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)
0.5
.1
.5
1.0
FREQUENCY (GHz)
FIGURE 1
122C Page
FIGURE 2
SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE
www.teledynerelays.com
©2003 TELEDYNE RELAYS
122C/1203/Q1
SERIES 122C
OUTLINE DIMENSIONS
CASE DETAIL
.335 MAX.
(8.51)
.435 MAX.
(11.05)
TERMINAL LOCATIONS
(Viewed
from
Terminals; Numbers
for
Reference Only)
.035 ±.010
.375 MAX.
(.89 ±.25)
(9.53)
.031 ±.003
(.79 ±.08)
10
9
8
7
5
1
2
.475 MAX.
3
(12.07)
4
.200 ±.010
(5.08 ±0.25)
SCHEMATIC IS VIEWED FROM TERMINALS.
CONTACTS SHOWN IN POSITION RESULTING
WHEN COIL A LAST ENERGIZED.
COIL A
INPUT
SCHEMATIC DIAGRAMS
COIL B
OUTPUT
PIN 10: +SUPPLY
PIN 5: –SUPPLY
PINS 4 & 9: GATE
.295 MAX.
(7.49)
.75 MIN.
(19.05)
+.002
.017 –.001
(+.051)
(.43)
(–.025)
10 LEADS
.100 ±.010
(2.54 ±.25)
TYP
6
DIMENSIONS ARE SHOWN
IN INCHES (MILLIMETERS)
DIA.
TYPICAL CMOS INTERFACE CIRCUIT
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. Pins 4, 5 and 9 must be shorted when tested for Insulation
Resistance and Dielectric Withstanding Voltage.
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. Screened HI-REL versions available. Contact factory.
8. Maximum rated gate voltage = 15 VDC.
9. Measured for 5 sec max. Includes allowance for “on”
resistance of MOSFET.
10.
Notes:
Logic 1 activates the coil.
Logic 1 must not be applied to
A and B simultaneously
Vcc = logic bias power.
Vr = coil energization voltage.
Vcc
Vr
Pin 10
Logic element
A
1 = 3.8 to 15Vdc B
0 = 0.5Vdc min.
Pin 9
Pin 4
Pin 5
Teledyne Part Numbering System for Relays
122C Z
M9 - 26 / S
Q
CENTIGRID
®
AND TO-5
Relay Series
Optional Ground Pin
(See Appendix)
Pad Option
(See Appendix)
Q= Solder Coated Leads
G= Gold Plated Leads
(Notes 5 and 6)
S= .187" leads
(Note 6)
Coil Voltage
©2003 TELEDYNE RELAYS
SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE
www.teledynerelays.com
122C Page
122C/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)
.400 (10.16)
.315 (8.00)
.420 (10.67)
.320 (8.13)
.300 (7.62)
.400 (10.16)
.325 (8.25)
.305 (7.75)
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
“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
fi
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 specified, tolerance is ± .010 (.25).
5. Add 10 mΩ 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
.150
[3.81]
.300
[7.62]
.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
“M ” 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]
.014
[0.36]
(REF)
.300
[7.62]
.100
[2.54]
.200
[5.08]
.370
[9.4]
MIN
.493 (12.52)
.503 (12.78)
“M ” 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 specified, tolerance is ± .010” (0.25).
5/. Add 25 mΩ 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 mΩ 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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♦
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© 2008 Teledyne Relays
