Panasonic LK-T Relays specifications Dimensions, Reference Data

LK-T

TYPES AND COIL DATA (at 20°C 68°F)

		Pick-up voltage,	Drop-out		Nominal	Nominal	Maximum
Part No.	Nominal voltage,		voltage,	Coil resistance,	operating		allowable
	V DC	V DC (max.)	V DC (min.)	Ω (±10%)	current, mA	operating power,	voltage, V DC
		(Initial)				mW
			(Initial)		(±10%)		(at 20°C 68°F)
LKT1aF-5V	5	(Initial) 3.5	(Initial) 0.5	100	50	250	6.5
LKT1aF-9V	9	(Initial) 6.3	(Initial) 0.9	324	27.8	250	11.7
LKT1aF-12V	12	(Initial) 8.4	(Initial) 1.2	576	20.8	250	15.6
LKT1aF-24V	24	(Initial) 16.8	(Initial) 2.4	2,304	10.4	250	31.2

DIMENSIONS

mminch

0.5 dia.	0.3
.020 dia.		.012

1.65

.065 Max. 24.0

.945

16.5

.650

Max. 25.0

.984

0.5

.020

4

.157

0.4

.016

1.0

.039

Max. 11.0

.433

PC board pattern (Bottom view)

2-0.9 dia.	16.5	2-1.3 dia.
2-.035 dia.	.650	2-.051 dia.
		7.5
		.295
	20.0
	.787

Tolerance: ±0.1 ±.004

Schematic (Bottom view)

20.0

.787

	Dimension:	General tolerance
7.5
.295	Max. 1mm .039 inch:	±0.1	±.004
	1 to 3mm .039 to .118 inch: ±0.2		±.008
	Min. 3mm .118 inch:	±0.3	±.012

REFERENCE DATA

1. Max. switching power (AC resistive load)	2. Coil temperature rise	3. Ambient temperature characteristics and coil
	Sample: LKT1aF-12V, 6 pcs.	applied voltage
	Point measured: coil inside
	Contact current: 0 A, 5A

Contact current, A

100

10

5

1

010 100 Contact voltage, V

Temperature rise, °C

30

20°C 5A

20°C 0A

25

70°C 5A

70°C 0A

20

15

10

5
00	80	100	120
		Coil applied voltage, %V

Coil applied voltage, %V

500
400
	Allowable	ambient		temperatures
	against	% coil voltages
300	(max. inside the coil temperature
	set as 115°C 239°F)
			Carrying current: 5A
200

Coil & contact no carrying current

100

Pick-up voltage

00	10	20				60	70	80
			30	40	50
			Ambient temperature, °C

4-(1). Electrical life test

(5 A 277 V AC, resistive load)

Sample: LKT1aF-12V, 6 pcs.

Operation frequency: 20 times/min.

(ON/OFF = 1.5s: 1.5s)

Ambient temperature: 20°C 68°F

Circuit:

	Contact
	welding
	detection
277V AC	and Mis-
12V DC	contacting
	detection
	circuit

Change of pick-up and drop-out voltage

	12
V		Pick-up voltage
voltage,	10
out	8		Max.
			x
-
drop	6		Min.
up and
	4
Pick-	2	Drop-out voltage	Max.
			x
			Min.
	00	5	10
		No. of operations, ⋅104

Change of contact resistance

	50
	45
mΩ	40
resistance,	35
	30
	25		Max.
Contact
	20
	15
			x
	10
	5		Min.
	00	5	10

No. of operations, ⋅104

2 ds_61113_0004_en_lkt: 091008J