s422-18 Teledyne Technologies Incorporated., s422-18 Datasheet

s422-18

Manufacturer Part Number

s422-18

Description

Surface Mount Magnetic-latching To-5 Relays Dpdt

Manufacturer

Teledyne Technologies Incorporated.

Datasheet

1.S422-18.pdf (6 pages)

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DESCRIPTION

The magnetic-latching TO-5 relay, originally conceived and de-

veloped 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 surface mounting, its small size and low coil

power dissipation make the S422 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 ef¿ ciency and

• High force/mass ratios for resistance to shock and vibration.

• Advanced cleaning techniques provide maximum assurance of

• Precious metal alloy contact material with gold plating assures

PRINCIPAL OF OPERATION

Energizing Coil B produces a magnetic ¿ eld op-

posing the holding À ux of the permanent magnet in

Circuit B. As this net holding force decreases, the

attractive force in the air gap of Circuit A, which

also results from the À ux of the permanent mag-

net, becomes great enough to break the armature

free of Core B, and snap it into a closed position

against Core A. The armature then remains in this

position upon removal of power from Coil B, but

will snap back into position B upon energizing Coil

A. Since operation depends upon cancellation of a magnetic ¿ eld, 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 simulta-

neously. Coils should not be pulsed with less than rated coil voltage and the pulse width

should be a minimum of three times the speci¿ ed operate time of the relay. If these condi-

tions are not followed, it is possible for the relay to be in the magnetic neutral position.

mechanical rigidity.

internal cleanliness.

excellent high current and dry circuit switching capabilities.

DESIGNATION

S422DD

SERIES

S422D

(800) 284-7007 • www.teledynerelays.com • +44 (0) 1236 453124 • www.teledyne-europe.com

S422

SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE

DPDT Surface Mount Basic Relay

DPDT Surface Mount Relay with internal diode for coil transient suppression

and polarity reversal protection

MAGNETIC-LATCHING

SURFACE MOUNT

SOFT IRON

ARMATURE

TO-5 RELAYS

MAGNETIC CIRCUIT B

COIL B

PERMANENT MAGNET

DPDT

The Series S422D and S422DD utilize discrete diodes for

coil suppression and polarity reversal protection.

By virtue of its inherently low intercontact capacitance and contact

circuit losses, these TO-5 relays have proven to be excellent ultra-

miniature RF switches for frequency ranges well into the UHF spec-

trum. A typical RF application for these TO-5 relays is in

handheld radio receivers, wherein the combined features of good RF

performance, small size, very low coil power dissipation and high reli-

ability make it a preferred method of transmit-receive

switching (See Figure 1).

The Series S422 magnetic-latching relays are ideally suited for

applications where power dissipation must be minimized. The relays

can be operated with a short duration pulse. After the contacts have

transferred, no external holding power is required.

The magnetic latching feature of the Series S422 relays provide a

“memory” capability, since the relays will not reset upon removal of

coil power.

RELAY TYPE

MAGNETIC CIRCUIT A

SOFT IRON FRAME

MOVING

CONTACT

COIL A

SOFT IRON

COIL A

AIR GAP

STATIONARY

CONTACT

Temperature

(Ambient)

Vibration

(General Note 1)

Shock

(General Note 1)

Acceleration

Enclosure

Weight

PHYSICAL SPECIFICATIONS

ENVIRONMENTAL AND

SERIES

S422

–65°C to +125°C

30 g’s to 3000 Hz

100 g’s,

6msec, half sine

50 g’s

Hermetically sealed

0.10 oz. (2.84g) max.

S422 Page 1

Related parts for s422-18

s422-18 Summary of contents

Page 1

... Teledyne, has become one of the industry standards for low-level switching from dry circuit to 1 ampere. Designed for high-density PC board surface mounting, its small size and low coil power dissipation make the S422 relay one of the most versatile ultraminiature relays available. The following unique construction features and manufacturing ...

Page 2

... S422D-9 S422DD-5 S422DD-6 S422DD-9 5.0 6.0 6.0 8.0 61 120 48 97 75.8 46.9 104.2 63.0 3.5 4.5 4.5 5.5 300 250 200 1.92 1.22 150 1.07 100 1.02 1.01 50 1.00 1.00 .5 1.0 0 0.1 70,000 ft.: 125 Vrms/60 Hz 1.0 max 100 min. S422-12 S422-18 S422D-12 S422D-18 S422DD-12 S422DD-18 9.0 12.0 18.0 12.0 16.0 24.0 280 500 1130 280 500 1130 26.0 20.0 13.7 33.7 25.5 17.2 6.8 9.0 13.5 7.8 10.0 14.5 TYPICAL DC CONTACT RATING (RESISTIVE) 0.2 0.3 0.4 0.5 0.6 0.7 0.8 LOAD CURRENT (AMPS DC) FIGURE 2 S422-26 S422D-26 S422DD-26 26 ...

Page 3

... 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 diode. S422DD only. 5. Recommended solder paste thickness: 0.01” ...

Page 4

Pad designation and bottom view dimensions Ø.150 [3.81] (REF) “M4” Pad for TO-5 “M4” Pad for TO-5 ® “M4” Pad for Centigrid .156 [3.96] (REF) .256 [6.5] (REF) “M9” Pad for Centigrid ® Notes: 1. Spacer pad material: Polyester ﬁlm. ...

Page 5

Pad designation and bottom view dimensions .370 [9.4] MAX SQ .100 [2.54] .150 [3.81] .300 [7.62] .100 [2.54] .200 [5.08] "M" Pad 5/ 6/ .390 [9.91] SQ .100 [2.54] .100 .150 [2.54] [3.81] .300 [7.62] .150 [3.81] .300 [7.62] "M2" ...

Page 6

Appendix A: Ground Pin Positions Ø.200 [Ø5.08] 36° ±3° TO-5 Relays: ER411T, ER412, ER412T, ER420, ER421, ER422, ER431T, ER432, ER432T, 712, 712TN, 400H, 400K, 400V, RF300, RF303, RF341, RF312, RF310, RF313, RF320, RF323 .100 [2.54] .100 [2.54] .050 [1.27] .100 ...

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