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
(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 sufx ““-OH””.
n ORDERING INFORMATION
RA4 L – D 12 W – K
[Example] (a) (b) (c) (d) (e) (f )
RA4 SERIES
MINIATURE RELAY
4 POLES—1 to 2 A (FOR SIGNAL SWITCHING)
1
RoHS compliant
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2
RA4 SERIES
Nominal Coil resistance Must operate Must release Nominal
MODEL voltage (±10%) voltage*1 voltage*1 power
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
n COIL DATA CHART
Standard Type
Note: *1 Specied values are subject to pulse wave voltage.
All values in the table are measured at 20°C.
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3
RA4 SERIES
Nominal Coil resistance Set Reset Nominal
MODEL voltage (±10%) voltage*1 voltage*1 power
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
Single Winding Latching TypeDouble Winding Latching Type
P: Primary coil S: Secondary coil
Note: *1 Specied values are subject to pulse wave voltage.
All values in the table are measured at 20°C.
n COIL DATA CHART
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4
RA4 SERIES
Standard Type
Single Winding Latching Type Double Winding Latching Type
Item
RA4-( ) W-K RA4L-( ) W-K RA4L-D ( ) W-K
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
Maximum Switching Voltage 250 VAC, 220 VDC
Maximum Switching Current 2 A
Minimum Switching Load*1 0.01 mA 10 mVDC
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 × 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 3.3 mm)
Resistance Endurance 10 to 55 Hz (double amplitude of 5.0 mm)
Shock Misoperation 300 m/s2 (11 ±1 ms)
Resistance Endurance 1,000 m/s2 ( 6 ±1 ms)
Weight Approximately 6.4 g
n SPECIFICATIONS
*1 Minimum switching loads mentioned above are reference values. Please perform the conrmation test with the actual load
before production since reference values may vary according to switching frequencies, environmental conditions and
expected reliability levels.
Item Standard Single latch Double latch
Isolation (initial) Minimum 1,000 MΩ (at 500VDC)
Dielectric
Strength
open contacts 1,500VAC 1 min.
coil and contacts/
adjacent contact
1,500VAC 1 min.
Surge Voltage 1500V (coil-contact) (10/160 µs standard wave)
n INSULATION
Type Compliance Contact rating
UL UL 478, UL 508
E 45026
Flammability: UL 94-V0 (plastics)
0.5A, 120VAC (resistive)
2A, 30VDC (resistive)
0.5A, 60VDC (resistive)
CSA C22.2 No. 14
LR 35579
n SAFETY STANDARDS
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5
RA4 SERIES
n CHARACTERISTIC DATA
n REFERENCE DATA
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6
RA4 SERIES
n DIMENSIONS
l Dimensions
l Schematics
(Bottom View)
l PC board mounting hole layout
(Bottom view)
RA4, RA4L type (Non-latching type, single winding latching type)
RA4L-D type (Double winding latching type)
Unit: mm
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7
RA4 SERIES
1. General Information
l Relays produced after the specic 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 veried that using lead-free relays in leaded assembly process will not cause any
problems (compatible).
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 ofce.
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 Prole
l Recommended solder paste Sn-3.0Ag-0.5Cu.
RoHS Compliance and Lead Free Relay Information
Reow Solder condtion
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.
We highly recommend that you conrm your actual solder conditions
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.
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8
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
Web: http://www.fujitsu.com/us/services/edevices/components/
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 Pacic
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/
Fujitsu Components International Headquarter Ofces
©2008 Fujitsu Components America, Inc. All rights reserved. All trademarks or registered trademarks are the property of their respective
owners.
Fujitsu Components America or its afliates 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 afliates reserve the right to change specications/datasheets without prior notice.
Rev. January 23, 2008.
DISCONTINUED (2009)