■ FEATURES
●Ultra high sensitivity
●High reliability-bifurcated contacts
●Conforms to FCC rules and regulations Part 68
—
Dielectric strength 1,500 VAC between coil and contacts
—Surge strength 1,500 V
●UL, CSA recognized
●Wide operating range
●DIL pitch terminals
●Plastic sealed type
●Latching type available
●Dial-pulse relay available
(a) Series Name RA : RA Series
(b) Operation Function Nil : Standard type
L : Latching type
(c) Number of Coil Nil : Single winding type
D : Double winding type
(d) Nominal Voltage Refer to the COIL DATA CHART
(e) Contact W : Bifurcated type
(f) Enclosure K : Plastic sealed type
Note: Actual marking omits the hyphen (-) of (*)
For movable and stationary contact with gold overlay type, add suffix ““-OH””.
■ SAFETY STANDARD AND FILE NUMBERS
UL478, 508 (File No. E45026)
C22.2 No. 14 (File No. LR35579)
Please request when the approval markings are required on the cover.
■ ORDERING INFORMATION
RA L – D 12 W – K
[Example] (a) (b) (*) (c) (d) (e) (f)
RA SERIES
MINIATURE RELAY
2 POLES—1 to 2 A (FOR SIGNAL SWITCHING)
Nominal voltage Contact rating
0.5 A 120 V AC
1.5 to 48 VDC 2 A 30 VDC resistive
0.5 A 60 VDC
1
2
RA SERIES
■ SPECIFICATIONS
Standard Type
Single Winding Latching Type Double Winding Latching Type
Item RA-( ) W-K RAL-( ) W-K RAL-D ( ) W-K
Contact Arrangement 2 form C (DPDT)
Material Gold overlay silver alloy
Style Bifurcated
Resistance (initial) Maximum 100 mΩ (at 1 A 6 VDC)
Rating (resistive) 0.5 A 120 VAC or 1 A 24 VDC
Maximum Carrying Current 2 A
Maximum Switching Power 60 VA, 24 W
Maximum Switching Voltage 250 VAC, 220 VDC
Maximum Switching Current 2 A
Minimum Switching Load*10.01 mA 10 mVDC
Capacitance Approximately 1.5 pF (between open contacts), 1.0 pF (adjacent contacts)
(10 MHz) Approximately 1.7 pF (between coil and contacts)
Coil Nominal Power (at 20°C) 0.15 to 0.2 W 0.075 to 0.2 W 0.15 to 0.2 W
Operate Power (at 20°C) 0.07 to 0.09 W 0.04 to 0.05 W 0.07 to 0.09 W
Operating Temperature –40°C to +80°C (no frost) (refer to the CHARACTERISTIC DATA)
Time Value Operate (at nominal voltage) Maximum 6 ms Maximum 6 ms (set)
Release (at nominal voltage) Maximum 4 ms Maximum 6 ms (reset)
Insulation Resistance (at 500 VDC) Minimum 1,000 MΩ
between open contacts
1,000 VAC 1 minute
Dielectric
between adjacent contacts
1,500 VAC 1 minute
Strength
between coil and contacts
1,500 VAC 1 minute
Surge Strength 1,500 V
Life Mechanical 2 × 107 operations minimum
Electrical 2 × 105 ops. min. (0.5 A 120 VAC), 5 × 105 ops. min. (1 A 24 VDC)
Other Vibration Misoperation 10 to 55 Hz (double amplitude of 5.0 mm)
Resistance Endurance 10 to 55 Hz (double amplitude of 5.0 mm)
Shock Misoperation 500 m/s2 (11 ±1 ms)
Resistance Endurance 1,000 m/s2 ( 6 ±1 ms)
Weight Approximately 3.7 g
*1 Minimum switching loads mentioned above are reference values. Please perform the confirmation test with the actual
load before production since reference values may vary according to switching frequencies, environmental conditions
and expected reliability levels.
3
RA SERIES
Nominal Coil resistance Must operate Must release Nominal
MODEL voltage (±10%) voltage*1voltage*1power
RA-1.5 W-K 1.5 VDC 15Ω +1.0 VDC +0.15 VDC 150 mW
RA- 3 W-K 3 VDC 60Ω +2.0 VDC +0.3 VDC 150 mW
RA-4.5 W-K 4.5 VDC 135Ω +3.1 VDC +0.45 VDC 150 mW
RA- 5 W-K 5 VDC 167Ω +3.4 VDC +0.5 VDC 150 mW
RA- 6 W-K 6 VDC 240Ω +4.0 VDC +0.6 VDC 150 mW
RA- 9 W-K 9 VDC 540Ω +6.1 VDC +0.9 VDC 150 mW
RA- 12 W-K 12 VDC 960Ω +8.1 VDC +1.2 VDC 150 mW
RA- 18 W-K 18 VDC 2,160Ω+12.3 VDC +1.8 VDC 150 mW
RA- 24 W-K 24 VDC 2,880Ω+16.1 VDC +2.4 VDC 200 mW
RA- 48 W-K 48 VDC 11,520Ω+32.2 VDC +4.8 VDC 200 mW
■ COIL DATA CHART
Standard Type
Note: *1 Specified values are subject to pulse wave voltage.
All values in the table are measured at 20°C.
Nominal Coil resistance Set Reset Nominal
MODEL voltage (±10%) voltage*1voltage*1power
RAL-1.5 W-K 1.5 VDC 30Ω +1.0 VDC –1.0 VDC 75 mW
RAL- 3 W-K 3 VDC 120Ω +2.1 VDC –2.1 VDC 75 mW
RAL-4.5 W-K 4.5 VDC 270Ω +3.1 VDC –3.1 VDC 75 mW
RAL- 5 W-K 5 VDC 335Ω +3.4 VDC –3.4 VDC 75 mW
RAL- 6 W-K 6 VDC 480Ω +4.1 VDC –4.1 VDC 75 mW
RAL- 9 W-K 9 VDC 1,080Ω +6.3 VDC –6.3 VDC 75 mW
RAL- 12 W-K 12 VDC 1,920Ω +8.3 VDC –8.3 VDC 75 mW
RAL- 18 W-K 18 VDC 4,320Ω+12.5 VDC –12.5 VDC 75 mW
RAL- 24 W-K 24 VDC 5,760Ω+16.6 VDC –16.6 VDC 100 mW
RAL -48 W-K 48 VDC 11,520Ω+21.0 VDC –21.0 VDC 200 mW
RAL-D1.5 W-K 1.5 VDC P 15Ω +1.0 VDC 150 mW
S 15Ω +1.0 VDC
RAL-D 3 W-K 3 VDC P 60 Ω +2.0 VDC 150 mW
S 60Ω +2.0 VDC
RAL-D4.5 W-K 4.5 VDC P 135Ω +3.1 VDC 150 mW
S 135Ω +3.1 VDC
RAL-D 5 W-K 5 VDC P 167 Ω +3.4 VDC 150 mW
S 167Ω +3.4 VDC
RAL-D 6 W-K 6 VDC P 240Ω +4.0 VDC 150 mW
S 240Ω +4.0 VDC
RAL-D 9 W-K 9 VDC P 540Ω +6.1 VDC 150 mW
S 540Ω +6.1 VDC
RAL-D 12 W-K 12 VDC P 960Ω +8.1 VDC 150 mW
S 960Ω +8.1 VDC
RAL-D 18 W-K 18 VDC P 2,160Ω+12.3 VDC 150 mW
S 2,160Ω+12.3 VDC
RAL-D 24 W-K 24 VDC P 2,880Ω+16.1 VDC 200 mW
S 2,880Ω+16.1 VDC
RAL-D 48 W-K 48 VDC P 11,520Ω+32.2 VDC 200 mW
S 11,520Ω+32.2 VDC
Single Winding Latching Type
Double Winding Latching T ype
P: Primary coil S: Secondary coil
Note: *1 Specified values are subject to pulse wave voltage.
All values in the table are measured at 20°C.
4
RA SERIES
■ CHARACTERISTIC DATA
5
RA SERIES
■ REFERENCE DATA
6
RA SERIES
■ DIMENSIONS
●Dimensions ●Schematics
(Bottom View) ●PC board mounting
hole layout
(Bottom View)
RA, RAL type (Non-latching type, single winding latching type)
RAL-D type (Double winding latching type)
Unit: mm
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of their respective owners. Rev. 02/12/2003
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