Datasheet

CENTIGRID®
MAGNETIC-LATCHING
COMMERCIAL RELAYS
SERIES
122C
DPDT
CMOS COMPATIBLE
SERIES
DESIGNATION
122C
RELAY TYPE
DPDT general-purpose magnetic-latching relay with internal power
MOSFET driver and diode coil transient suppression
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.
CENTIGRID® AND TO-5
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’ T2R® 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.
PRINCIPLE OF OPERATION
PERMANENT MAGNET
MAGNETIC CIRCUIT B
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).
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.
©2003 TELEDYNE RELAYS
ENVIRONMENTAL AND
PHYSICAL SPECIFICATIONS
–65°C to +125°C
Temperature Storage
(Ambient)
Operating –55°C to +85°C
Vibration
(General Note 1)
30 g’s to 3000 Hz
Shock
(General Note 1)
100 g’s,
6 msec, half-sine
Acceleration
50 g’s
Enclosure
Hermetically sealed
Weight
0.10 oz. (2.75g) max.
SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE
www.teledynerelays.com
122C Page 88
122C/1203/Q1
SERIES 122C
GENERAL ELECTRICAL SPECIFICATIONS (–65°C to +125°C unless otherwise noted) (Notes 2 & 3)
Contact Arrangement
Rated Duty
2 Form C (DPDT)
Continuous
Contact Resistance
0.125 ohm max. before life; 0.225 ohm max. after life at 1A/28Vdc
(measured 1/8" from header)
Contact Load Ratings (DC)
(See Fig. 2 for other DC
resistive voltage/current ratings)
Resistive:
Inductive:
Lamp:
Low Level:
1 Amp/28Vdc
200 mA/28Vdc (320 mH)
100 mA/28Vdc
10 to 50 µA/10 to 50mV
Resistive:
250 mA/115Vac, 60 and 400 Hz (Case not grounded)
100 mA/115Vac, 60 and 400 Hz (Case grounded)
Contact Load Ratings (AC)
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
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)
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.
BASE PART
NUMBERS
(See Notes 3, 10)
122C-6
122C-9
122C-12
122C-18
122C-26
Nom.
Max.
Max.
Min.
5.0
5.6
114.9
82.2
6.0
8.0
57.0
41.6
9.0
12.0
37.2
27.4
12.0
16.0
27.8
20.5
18.0
24.0
18.2
13.7
26.5
32.0
15.2
11.4
Coil Operating Power @25°C
and Rated Voltage (mW)
Nom.
505
296
288
287
286
351
Latch and Reset Voltage
(Vdc)
Max.
3.5
4.5
6.8
9.0
13.5
18.0
Coil Voltage (Vdc)
Coil Current (mAdc @25°C)
(Note 9)
PERFORMANCE CURVES
(NOTE 2)
TYPICAL RF PERFORMANCE
CENTIGRID® AND TO-5
122C-5
TYPICAL DC CONTACT RATING (RESISTIVE)
0
INSERT
ION LO
.1
SS
300
.3
10
1.92
20
1.22
)
(VSWR
N LOSS
RETUR
S
T
C
NTA
S CO
ROS
N AC
30
40
50
IO
OLAT
IS
60
122C Page 89
0.5
1.02
1.01
.1
.5
ES
S POL
CROS
TION A
ISOLA
70
.01
1.07
1.00
VSWR
dB
.4
LOAD VOLTAGE (VDC)
.2
250
200
150
100
50
1.00
1.0
0
0.1
0.2
0.3
0.4
0.5
0.6
FREQUENCY (GHz)
LOAD CURRENT (AMPS DC)
FIGURE 1
FIGURE 2
SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE
www.teledynerelays.com
0.7
0.8
0.9
1.0
©2003 TELEDYNE RELAYS
122C/1203/Q1
SERIES 122C
OUTLINE DIMENSIONS
SCHEMATIC DIAGRAMS
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)
1
9
8
.100 ±.010 7
(2.54 ±.25)
TYP
6
.75 MIN.
(19.05)
(+.051)
(.43)
(–.025)
PIN 10: +SUPPLY
PIN 5: –SUPPLY
PINS 4 & 9: GATE
10
.295 MAX.
(7.49)
+.002
.017 –.001
COIL B
OUTPUT
DIA.
2 .475 MAX.
(12.07)
3
5
4
COIL A
INPUT
.200 ±.010
(5.08 ±0.25)
DIMENSIONS ARE SHOWN
IN INCHES (MILLIMETERS)
SCHEMATIC IS VIEWED FROM TERMINALS.
CONTACTS SHOWN IN POSITION RESULTING
WHEN COIL A LAST ENERGIZED.
10 LEADS
TYPICAL CMOS INTERFACE CIRCUIT
Vr
Vcc
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.
Pin 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.
Logic element
Pin 9
Pin 4
A
1 = 3.8 to 15Vdc B
0 = 0.5Vdc min.
Pin 5
Teledyne Part Numbering System for Relays
CENTIGRID® AND TO-5
122C Z
M9 - 26 / S
Q
Q= Solder Coated Leads
G= Gold Plated Leads
(Notes 5 and 6)
Relay Series
Optional Ground Pin
(See Appendix)
S= .187" leads
(Note 6)
Pad Option
(See Appendix)
Coil Voltage
©2003 TELEDYNE RELAYS
SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE
www.teledynerelays.com
122C Page 90
122C/1203/Q1
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