VDE
IC DRIVABLE PC BOARD
RELAY FOR FIELD LOAD
SWITCHING
ST-RELAYS
FEATURES
• Sealed to meet the combination pro-
cess of automatic wave soldering
and cleaning needs
14
31
1.220
.551
• High switching capacity and high
sensitivity in subminiature size
150 mW pick-up, 8 A inrush capacity:
51 A for 1a1b, 35 A for 2a
11.3
.445
• Latching types available
• High shock and vibration resistance
Shock: 20 G,Vibration: 10 to 55 Hz at
double amplitude of 2 mm
mm inch
SPECIFICATIONS
Contacts
Characteristics (at 25°C 77°F 50% Relative humidity)
1 Form A
1 Form B
Max. operating speed
Initial insulation resistance*1
20 cpm (at rated load)
1,000 MΩ (at 500 V DC)
2,000 Vrms
Arrangement
2 Form A
Contact material
Gold flash over silver alloy
30 mΩ
Between contact sets
Initial
Initial contact resistance, max.
Max. switching power
breakdown Between open contacts
1,200 Vrms
2,000 VA, 150 W
380 V AC, 30 V DC
8 A
voltage*2
Between contacts and coil
3,750 Vrms
Rating
(resistive)
Max. switching current
HP rating
Max. switching voltage
Surge voltage between coil and
contact*3
Operate time*4
(at nominal voltage)
Release time (without diode)*4
(at nominal voltage)
Set time*4 (latching)
(at nominal voltage)
Reset time*4 (latching)
(at nominal voltage)
Min. 6,000 V
1/4 HP 125, 250 V AC
Max. 15 ms (Approx. 10 ms)
Max. 10 ms (Approx. 8 ms)
Max. 10 ms (Approx. 8 ms)
Max. 10 ms (Approx. 8 ms)
51 A (TV-3 equivalence) for 1a1b
35 A (TV-1 equivalence) for 2a
Inrush current capability
Mechanical (at 180 cpm)
107
105
8 A 250 V AC (resistive)
Expected
life (min.
operations)
5 A 30 V DC (resistive)
Electrical
2 × 105
3 A 100 V AC (lamp)
3 × 104
—
3 × 104
1 A 100 V AC (lamp)
—
Temperature rise
Max. 55°C with nominal coil voltage
(at 60°C)
and at 8 A switching current
Coil (polarized) (at 25°C 77°F)
Functional*5
Min. 196 m/s2 {20 G}
Min. 980 m/s2 {100 G}
117.6 m/s2 {12 G}, 10 to 55 Hz
at double amplitude of 2 mm
176.4 m/s2 {18 G}, 10 to 55 Hz
at double amplitude of 3 mm
Shock
resistance
Single side stable Nominal operating power
Approx. 240 mW
Approx. 240 mW
Destructive*6
Functional*7
Latching
Nominal set and reset power
Remarks
Vibration
resistance
* Specifications will vary with foreign standards certification ratings.
*1 Measurement at same location as "Initial breakdown voltage" section
*2 Detection current: 10 mA
Destructive
*3 Wave is standard shock voltage of ±1.2 × 50µs according to JEC-212-1981
*4 Excluding contact bounce time
Conditions for operation, Ambient
–40°C to +60°C
–40°Fto +140°F
transport and storage*8
(Not freezing and condens-
ing at low temperature)
temp.
*5 Half-wave pulse of sine wave: 11ms; detection time: 10µs
*6 Half-wave pulse of sine wave: 6ms
Humidity
5 to 85% R.H.
*7 Detection time: 10µs
*8 Refer to 5. Conditions for operation, transport and storage mentioned in
AMBIENT ENVIRONMENT (Page 61).
Unit weight
Approx. 10g .353 oz
TYPICAL APPLICATIONS
Sequence controllers, facsimiles, telephone controls, remote
control security devices and security equipment.
ORDERING INFORMATION
Ex. ST
1
L2
DC48V
Contact arrangement
Operating function
Coil voltage
1: 1 Form A 1 Form B
2: 2 Form A
Nil: Single side stable
L2: 2 coil latching
DC 3, 5, 6, 9, 12,
24, 48 V
(Note) Standard packing: Carton; 50 pcs., Case; 500 pcs.
249