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MINIATURE RELAY
To be DisconTinueD
4 POLES—1 to 2 A (FOR SIGNAL SWITCHING)
RA4 SERIES
n FEATURES
l Ultra high sensitivity
l High reliability-bifurcated contacts
l Conforms to FCC rules and regulations Part 68
—
Dielectric strength 1,500 VAC between coil and contacts
—Surge strength 1,500 V
l UL, CSA recognized
l Wide operating range
l DIL pitch terminals
l Plastic sealed type
l Latching type available
l RoHS compliant since date code: 0418H
Please see page 7 for more information
n ORDERING INFORMATION
RA4 L – D 12 W – K
[Example] (a) (b) (c) (d) (e) (f )
RoHS compliant
(a) Series Name RA4 : RA4 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: For movable and stationary contact with gold overlay type, add sufx ““-OH””.
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n COIL DATA CHART
RA4 SERIES
Nominal Coil resistance Must operate Must release Nominal
RA4-1.5 W-K 1.5 VDC 11Ω +1.0 VDC +0.15 VDC 200 mW
RA4- 3 W-K 3 VDC 45Ω +2.1 VDC +0.3 VDC 200 mW
RA4-4.5 W-K 4.5 VDC 100Ω +3.1 VDC +0.45 VDC 200 mW
RA4- 5 W-K 5 VDC 125Ω +3.5 VDC +0.5 VDC 200 mW
RA4- 6 W-K 6 VDC 180Ω +4.2 VDC +0.6 VDC 200 mW
RA4- 9 W-K 9 VDC 405Ω +6.3 VDC +0.9 VDC 200 mW
RA4- 12 W-K 12 VDC 720Ω +8.4 VDC +1.2 VDC 200 mW
RA4- 18 W-K 18 VDC 1,620Ω +12.6 VDC +1.8 VDC 200 mW
RA4- 24 W-K 24 VDC 2,880Ω +16.8 VDC +2.4 VDC 200 mW
RA4- 48 W-K 48 VDC 11,520Ω +33.6 VDC +4.8 VDC 200 mW
Note: *
All values in the table are measured at 20°C.
Standard Type
MODEL
voltage (±10%) voltage*
1
voltage*
1
To be DisconTinueD
1
Specied values are subject to pulse wave voltage.
power
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RA4 SERIES
n COIL DATA CHART
Nominal Coil resistance Set Reset Nominal
RA4L-1.5 W-K 1.5 VDC 25Ω +1.0 VDC –1.0 VDC 90 mW
RA4L- 3 W-K 3 VDC 100Ω +2.1 VDC –2.1 VDC 90 mW
RA4L-4.5 W-K 4.5 VDC 225Ω +3.1 VDC –3.1 VDC 90 mW
RA4L- 5 W-K 5 VDC 278Ω +3.5 VDC –3.5 VDC 90 mW
RA4L- 6 W-K 6 VDC 400Ω +4.2 VDC –4.2 VDC 90 mW
RA4L- 9 W-K 9 VDC 900Ω +6.3 VDC –6.3 VDC 90 mW
RA4L- 12 W-K 12 VDC 1,600Ω +8.4 VDC –8.4 VDC 90 mW
RA4L- 18 W-K 18 VDC 3,600Ω +12.6 VDC –12.6 VDC 90 mW
RA4L- 24 W-K 24 VDC 6,400Ω +16.8 VDC –16.8 VDC 90 mW
RA4L- 48 W-K 48 VDC 25,600Ω +33.6 VDC –33.6 VDC 90 mW
RA4L-D1.5 W-K 1.5 VDC P 12.5Ω +1.0 VDC 180 mW
S 12.5Ω +1.0 VDC
RA4L-D 3 W-K 3 VDC P 50Ω +2.1 VDC 180 mW
S 50Ω +2.1 VDC
RA4L-D4.5 W-K 4.5 VDC P 113Ω +3.1 VDC 180 mW
S 113Ω +3.1 VDC
RA4L-D 5 W-K 5 VDC P 139Ω +3.5 VDC 180 mW
S 139Ω +3.5 VDC
RA4L-D 6 W-K 6 VDC P 200Ω +4.2 VDC 180 mW
S 200Ω +4.2 VDC
RA4L-D 9 W-K 9 VDC P 450Ω +6.3 VDC 180 mW
S 450Ω +6.3 VDC
RA4L-D 12 W-K 12 VDC P 800Ω +8.4 VDC 180 mW
S 800Ω +8.4 VDC
RA4L-D 18 W-K 18 VDC P 1,800Ω +12.6 VDC 180 mW
S 1,800Ω +12.6 VDC
RA4L-D 24 W-K 24 VDC P 3,200Ω +16.8 VDC 180 mW
S 3,200Ω +16.8 VDC
RA4L-D 48 W-K 48 VDC P 12,800Ω +33.6 VDC 180 mW
S 12,800Ω +33.6 VDC
MODEL
voltage (±10%) voltage*
1
voltage*
1
To be DisconTinueD
Single Winding Latching TypeDouble Winding Latching Type
power
1
Note: *
All values in the table are measured at 20°C.
Specied values are subject to pulse wave voltage.
P: Primary coil S: Secondary coil
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n SPECIFICATIONS
RA4 SERIES
Standard Type
Item
Contact Arrangement 4 form C (4PDT)
Material Gold overlay silver palladium
Style Bifurcated (cross bar)
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
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Maximum Switching Voltage 250 VAC, 220 VDC
Maximum Switching Current 2 A
1
Minimum Switching Load*
Capacitance Approximately 1.4 pF (between open contacts), 1.3 pF (adjacent contacts)
(10 MHz) Approximately 2.4 pF (between coil and contacts)
Coil Nominal Power (at 20°C) 200 mW 90 mW 180 mW
Operate Power (at 20°C) 100 mW 45 mW 90 mW
Operating Temperature –40°C to +80°C (no frost) (refer to the CHARATERISTIC 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)
Life Mechanical 2 × 10
Electrical 2 × 10
Other Vibration Misoperation 10 to 55 Hz (double amplitude of 3.3 mm)
Shock Misoperation 300 m/s
Weight Approximately 6.4 g
*1 Minimum switching loads mentioned above are reference values. Please perform the conrmation test with the actual load
before production since reference values may vary according to switching frequencies, environmental conditions and
expected reliability levels.
Resistance
Resistance
Endurance 10 to 55 Hz (double amplitude of 5.0 mm)
Endurance 1,000 m/s
0.01 mA 10 mVDC
RA4-( ) W-K RA4L-( ) W-K RA4L-D ( ) W-K
7
operations minimum
5
ops. min. (0.5 A 120 VAC), 5 × 105 ops. min. (1 A 24 VDC)
2
(11 ±1 ms)
2
( 6 ±1 ms)
Single Winding Latching Type Double Winding Latching Type
n INSULATION
Item Standard Single latch Double latch
Isolation (initial) Minimum 1,000 MΩ (at 500VDC)
Dielectric
Strength
Surge Voltage 1500V (coil-contact) (10/160 µs standard wave)
open contacts 1,500VAC 1 min.
coil and contacts/
1,500VAC 1 min.
adjacent contact
n SAFETY STANDARDS
Type Compliance Contact rating
UL UL 478, UL 508
E 45026
CSA C22.2 No. 14
LR 35579
Flammability: UL 94-V0 (plastics)
0.5A, 120VAC (resistive)
2A, 30VDC (resistive)
0.5A, 60VDC (resistive)
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RA4 SERIES
n CHARACTERISTIC DATA
To be DisconTinueD
n REFERENCE DATA
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RA4 SERIES
To be DisconTinueD
n DIMENSIONS
l Dimensions
RA4, RA4L type (Non-latching type, single winding latching type)
RA4L-D type (Double winding latching type)
l Schematics
(Bottom View)
l PC board mounting hole layout
(Bottom view)
Unit: mm
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RA4 SERIES
RoHS Compliance and Lead Free Relay Information
1. General Information
l Relays produced after the specic date code that is indicated on each data sheet are lead-free
now. Most of our signal and power relays are lead-free. Please refer to Lead-Free Status Info.
(http://www.fujitsu.com/us/downloads/MICRO/fcai/relays/lead-free-letter.pdf)
l Lead free solder paste currently used in relays is Sn-3.0Ag-0.5Cu.
l All signal and most power relays also comply with RoHS. Please refer to individual data
sheets. Relays that are RoHS compliant do not contain the 5 hazardous materials that
are restricted by RoHS directive (lead, mercury, chromium IV, PBB, PBDE).
l
It has been veried that using lead-free relays in leaded assembly process will not cause any
problems (compatible).
To be DisconTinueD
l “LF” is marked on each outer and inner carton. (No marking on individual relays).
l To avoid leaded relays (for lead-free sample, etc.) please consult with area sales ofce.
l We will ship leaded relays as long as the leaded relay inventory exists.
Note: Cadmium was exempted from RoHSon October 21, 2005. (Amendment to Directive 2002/95/EC)
2. Recommended Lead Free Solder Prole
l Recommended solder paste Sn-3.0Ag-0.5Cu.
Reow Solder condtion
Flow Solder condtion:
Pre-heating: maximum 120˚C
Soldering: dip within 5 sec. at
260˚C soler bath
Solder by Soldering Iron:
Soldering Iron
Temperature: maximum 360˚C
Duration: maximum 3 sec.
We highly recommend that you conrm your actual solder conditions
3. Moisture Sensitivity
l Moisture Sensitivity Level standard is not applicable to electromechanical realys.
4. Tin Whisker
l Dipped SnAgCu solder is known as low risk tin whisker. No considerable length whisker was found by our in
house test.
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Fujitsu Components International Headquarter Ofces
RA4 SERIES
Japan
Fujitsu Component Limited
Gotanda-Chuo Building
3-5, Higashigotanda 2-chome, Shinagawa-ku
Tokyo 141, Japan
Tel: (81-3) 5449-7010
Fax: (81-3) 5449-2626
Email: promothq@ft.ed.fujitsu.com
Web: www.fcl.fujitsu.com
North and South America
Fujitsu Components America, Inc.
250 E. Caribbean Drive
Sunnyvale, CA 94089 U.S.A.
Tel: (1-408) 745-4900
Fax: (1-408) 745-4970
Email: components@us.fujitsu.com
To be DisconTinueD
Web: http://www.fujitsu.com/us/services/edevices/components/
©2009 Fujitsu Components America, Inc. All rights reserved. All trademarks or registered trademarks are the property of their respective
owners.
Fujitsu Components America or its afliates do not warrant that the content of datasheet is error free. In a continuing effort to improve our
products Fujitsu Components America, Inc. or its afliates reserve the right to change specications/datasheets without prior notice.
Rev. June 30, 2009.
Europe
Fujitsu Components Europe B.V.
Diamantlaan 25
2132 WV Hoofddorp
Netherlands
Tel: (31-23) 5560910
Fax: (31-23) 5560950
Email: info@fceu.fujitsu.com
Web: emea.fujitsu.com/components/
Asia Pacic
Fujitsu Components Asia Ltd.
102E Pasir Panjang Road
#01-01 Citilink Warehouse Complex
Singapore 118529
Tel: (65) 6375-8560
Fax: (65) 6273-3021
Email: fcal@fcal.fujitsu.com
Web: http://www.fujitsu.com/sg/services/micro/components/
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