Catalog 1308242
Issued 3-03
P&B
T77 series
10 Amp Miniature
PC Board Relay
File E29244
File LR48471
Users should thoroughly review the technical data before selecting a product part
number. It is recommended that user also seek out the pertinent approvals files of
the agencies/laboratories and review them to ensure the product meets the
requirements for a given application.
Features
Coil Data @ 20°C
• Small size for high density PC board mounting.
• 1 Form A contact arrangements.
• Creepage spacings of 6.5mm between contact and coil.
• Ideal for appliance, office equipment.
• 4,000VAC dielectric strength between contact and coil.
• UL Class F (155°C) approved insulation system.
Voltage: 3 to 24VDC.
Nominal Coil Power:
Contact rating 3 = 200mW.
Contact rating 10 = 450mW.
Coil Temperature Rise: Contact rating 3 = 35°C max.
Contact rating 10 = 40°C max.
Max. Coil Power: 120% of nominal.
Duty Cycle: Continuous.
Coil Data @ 20°C
Contact Data @ 20°C
Arrangements: 1 Form A (SPST-NO).
Material: Contact rating 3 - Silver.
Contact rating 10 - Silver alloy.
Max. Switching Rate: 300 ops./min. (no load).
30 ops./min. (rated load).
Expected Mechanical Life: 10 million operations.
Expected Electrical Life: 100,000 operations.
Minimum Contact Load: 10mA @ 5VDC.
Initial Contact Resistance: 100 milliohms max. @ 100mA, 6VDC.
Rated
Coil
Voltage
(VDC)
3
5
12
24
Coil
Resistance
(Ohms) ±10%
Contact Rating 3 Contact Rating 10
45
20
125
55
720
320
2,800
1,280
Must
Operate
Voltage
(VDC)
Must
Release
Voltage
(VDC)
2.25
3.75
9.00
18.00
0.15
0.25
0.60
1.20
Contact Ratings @ 20°C with relay properly vented. Remove vent
nib after soldering and cleaning.
Contact
Rating
3
10
UL/CSA Ratings
Type
Operations
Operate Data @ 20°C
3A @ 277VAC
Resistive
10LRA/1.5FLA @ 120VAC
Motor
5.4LRA/0.9FLA @ 240VAC
Motor
3LRA/1.5FLA @ 120VAC
Motor
3A @ 250VAC
Resistive
3A @ 250VAC UL
General Purpose
3A @ 30VDC
Resistive
2A @ 120VAC
Gen. Purpose
3A @ 120VAC
Resistive
10LRA/1.5FLA @ 120VAC
Motor
5.4LRA/0.9FLA @ 240VAC
Motor
10A @ 250VAC
Resistive
10A @ 30VDC
Resistive
10A @ 250VAC UL
General Purpose
6,000
30,000**
30,000**
100,000*
100,000
100,000
100,000
100,000***
100,000***
30,000**
30,000**
100,000
100,000
200,000
*Denotes test at 70°C ambient temperature.
**Denotes test at 85°C ambient temperature.
***Denotes test at 105°C ambient temperature.
Operate Time: 10 ms, max. (excluding bounce).
Release Time: 4 ms, max. (excluding bounce).
Environmental Data
Temperature Range: Storage: -40°C to +130°C.
Operating: -30°C to +55°C.
Contact Rating 3: -40°C to +80°C.
Contact Rating 10: -40°C to +55°C.
Vibration: Mechanical: 10 to 55 Hz., 1.5mm double amplitude.
Operational: 10 to 55 Hz., 1.5mm double amplitude.
Shock: Mechanical: 100g min.
Operational: 10g min.
Operating Humidity: 45 to 85% RH.
Initial Dielectric Strength
Between Open Contacts: 750VAC 50/60 Hz. (1 minute).
Between Coil and Contacts: 4,000VAC 50/60 Hz. (1 minute).
Initial Insulation Resistance
Between Mutually Insulated Elements: 108 ohms, min. @ 500VDC.
Dimensions are shown for
420 reference purposes only.
Dimensions are in inches over
(millimeters) unless otherwise
specified.
Mechanical Data
Termination: Printed circuit board.
Enclosures (94V-0 Flammability Ratings):
T77S: Immersion cleanable.
T77V: Vented, flux-tight, plastic cover.
Weight: 0.36 oz. (9g).
Specifications and availability
subject to change.
www.tycoelectronics.com
Technical support:
Refer to inside back cover.
