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