COMPACT POWER RELAY
1 POLE - 25/30A (For automotive applications)
FBR51, 52 Series
1
(a) Relay type FBR51
FBR52
: FBR51-Series - Standard type (contact gap 0.3mm)
: FBR52-Series - Wide contact gap type (contact gap 0.6mm)
(b) Enclosure N : Plastic sealed type
(c) Coil rated voltage D12 : 6....12VDC
Coil rating table at page 3
(d) Contact material W1
WL
WF
: Silver-tin oxide indium (high power type, 1 form C)
: Silver-tin oxide indium (lamp loads, 1 form A, FBR51 only)
Actual marking does not carry the type name: “FBR”
E.g.: Ordering code: “FBR51ND12-W1”, actual marking: “51ND12-W1”
■ FEATURES
■ Part Numbers
• Compact and light weight structure
• High current contact capacity
(carrying current: 35 A/10 minutes, 30 A/1 hour)
• High resistance to vibration and shock
• Improved heat resistance and extended operation range
• Two contact gap options
(FBR51: 0.3 mm, FBR52: 0.6 mm)
• Three types of contact material
[Example] FBR51 - N D12 - W1
(a) (b) (c) (d)
Not for New Design
FBR51, 52 Series
■ Specications (for motor load)
Item Characteristics Remarks / conditions
W1 contact
Contact
data
Conguration 1 form C (SPDT)
Material AgSnO2In (high capacity type)
Voltage drop Max. 100mV At 1A/12VDC
Contact rating 25A, 14VDC At locked motor load
Max. carrying current 35A / 10 min., 30A 1hr
Max. inrush current 60A Reference
Max. switching voltage 16VDC Reference
Max. switching power 35A Reference
Min. switching load *1 1A 6VDC Reference
Coil Storage temperature
range
40°C ~ +100°C No frost
Operating temperature
range
-40°C ~ +85°C
(At long continuous carry current
conditions, refer to “operating
coil voltage range” on page 7)
No frost
Timing
data
Operate Max. 10ms At nominal voltage
No diode, excluding
bounce
Release Max. 5ms At nominal voltage
No diode, excluding
bounce
Life Mechanical AC contact
rating
Min. 10 x 10⁶ operations
Electrical (resistive) DC contact
rating
Min. 100 x 103 operations At contact rating,
locked motor load
Other Vibration resistance Misoperation 10 to 200Hz, acceleration 44m/s2(4.5G) constant
acceleration
Direction X, Y, Z,
contact ON/OFF total 6
cycles
Endurance 10 to 200Hz, acceleration 44m/s2(4.5G) constant
acceleration
Direction X, Y, Z, con-
tact OFF total 6 hours
Shock resistance Misoperation Min. 100m/s² (11 ± 1ms) Direction X, Y, Z, con-
tact ON/OFF total 36
times
Endurance Min. 1,000m/s² (6 ± 1ms) Direction X, Y, Z, con-
tact OFF total 18 times
Dimensions / weight 12.1 x 15.5 x 13.7 mm / approx. 6g
*1: Minimum switching loads mentioned above are reference values. Please perform the conrmation test with actual load before production
since reference values may vary according to switching frequencies, environmental conditions and expected reliability levels.
Care shall be taken on the heat generated on PC board when maximum carrying current exceeds 10A. Please perform the conrmation test with actual conditions.
2
Not for New Design
FBR51, 52 Series FBR51, 52 Series
3
■ Specications (for lamp load)
Item Characteristics Remarks / conditions
W1 contact WL Contact
Contact
data
Conguration 1 form C (SPDT)
Material AgSnO2In (for
asher)
AgSnO2In (for
lamp)
Voltage drop Max. 100mV At 2A/12VDC
Contact rating 14VDC, 80W 14VDC, 120W At lamp load
Max. carrying current 35A / 10 min., 30A 1hr At 25 °C with nominal coil
voltage
Max. inrush current 60A At lamp load, reference
Max. switching voltage 16VDC Reference
Max. switching power 35A Reference
Min. switching load *1 1A 6VDC Reference
Coil Storage temperature
range
40°C ~ +100°C No frost
Operating temperature
range
-40°C ~ +85°C
(At long continuous carry current
conditions, refer to "operating
coil voltage range" on page 7)
No frost
Timing
data
Operate Max. 10ms At nominal voltage
No diode, excluding bounce
Release Max. 5ms At nominal voltage
No diode, excluding bounce
Life Mechanical AC contact
rating
Min. 10 x 10⁶ operations
Electrical (resistive) DC contact
rating
Min. 2.5 x 106
operations at
inrush 11A 14VDC
(0.35 sec - ON/0.35
sec - OFF)
Min. 100 x 10³
operations
At contact rating, lamp load
Other Vibration resistance Misoperation 10 to 200Hz, acceleration 44m/s2(4.5G)
constant acceleration
Direction X, Y, Z, contact ON/
OFF total 6 cycles
Endurance 10 to 200Hz, acceleration 44m/s2(4.5G)
constant acceleration
Direction X, Y, Z, contact OFF
total 6 hours
Shock resistance Misoperation Min. 100m/s² (11 ± 1ms) Direction X, Y, Z, contact ON/
OFF total 36 times
Endurance Min. 1,000m/s² (6 ± 1ms) Direction X, Y, Z, contact OFF
total 18 times
Dimensions / weight 12.1 x 15.5 x 13.7 mm / approx. 6g
*1: Minimum switching loads mentioned above are reference values. Please perform the conrmation test with actual load before production
since reference values may vary according to switching frequencies, environmental conditions and expected reliability levels.
Care shall be taken on the heat generated on PC board when maximum carrying current exceeds 10A. Please perform the conrmation test with actual conditions.
Not for New Design
FBR51, 52 Series
■ Coil Data (FBR51 series)
Coil code Rated Coil Voltage Coil Resistance +/-10% Must Operate Voltage* Must Release Voltage*
(VDC) (Ω) (VDC) (VDC)
D06 6 60 3.6
4.5 (at 85°C)
0.5
0.7 (at 85ºC)
D09 6 135 5.4
6.8 (at 85°C)
0.7
0.9 (at 85ºC)
D10 9 180 6.3
7.9 (at 85°C)
0.8
1.0 (at 85ºC)
D12 12 240 7.3
9.2 (at 85°C)
1.0
1.3 (at 85ºC)
Coil Data (FBR52 series)
FBR51, 52 Series
4
Coil code Rated Coil Voltage Coil Resistance +/-10% Must Operate Voltage* Must Release Voltage*
(VDC) (Ω) (VDC) (VDC)
D06 6 45 3.6
4.5 (at 85°C)
0.5
0.7 (at 85ºC)
D09 6 100 5.4
6.8 (at 85°C)
0.7
0.9 (at 85ºC)
D10 9 135 6.3
7.9 (at 85°C)
0.8
1.0 (at 85ºC)
D12 12 180 7.3
9.2 (at 85°C)
1.0
1.3 (at 85ºC)
Note: All values in the table are valid at 20oC and zero contact current, unless otherwise specied.
*: Specied operated values are valid for pulse wave voltage.
Please use at rated coil voltage. Please refer to characteristic data and set up adequate voltage in case of use at over voltage.
Not for New Design
■ Characteristic Data (Reference)
* Characteristic data is not a guaranteed value, but measured values of samples from production line.
FBR51, 52 Series
5
FBR51, 52 Series
01000100 20010
20
40
60
80
100
　
　
　
　
（
RL-1
）
20 sec
25 A
0 A
25 A
0 A
（
RL-2
）
0.3 sec
10 sec 0.3 sec
　
1000100 20010
1000
100
10
M
RL-1
RL-2
N.O.
N.C.
N.O.
N.C.
01000100 20010
20
40
60
80
100
　
　
　
　
　
1000100 20010
1000
100
10
M
N.O.
N.C.
0 A 4 A
20 A
16 A
Percent of rated coil voltage(%)
Operations ( x 103 operations)
Operations ( x 103 operations)
Contact resistance (mΩ)
Operate/release voltage
Contact resistance
Initial
Initial
Operate
(measured at 6VDC 1A wet)
Operations ( x 103 operations)
Contact resistance (mΩ)
Contact resistance
Initial
(measured at 6VDC 1A wet)
Release
Percent of rated coil voltage(%)
Operations ( x 103 operations)
Operate/release voltage
Initial
Operate
Release
Break
Make
Break
Make
- Test item
25A 14VDC
motor lock 200,000
operations minimum
(FBR52N( )-W1 type)
- Test circuit
- Current wave form
- Test item
20A 14VDC
motor free 400,000
operations minimum
(FBR51N( )-W1 type)
- Test circuit
- Current wave form
Not for New Design
FBR51, 52 SeriesFBR51, 52 Series
• Life test (example)
6
01000100 20010
20
40
60
80
100
　
　
　
　
　
1000100 20010
1000
100
10
0 A 10 A
80 A
N.O.
0
20
40
60
80
100
1000100 200100.1
0.1
　
1000100 20010
100
10
1
　
　
　
　
0 A
11 A
7 A
60 A
Percent of rated coil voltage(%)
Operations ( x 103 operations)
Operations ( x 103 operations)
Contact resistance (mΩ)
Operate/release voltage
Operate/release voltage
Contact resistance
Initial
Initial
Operate
(measured at 6VDC 1A wet)
Release
- Test item
Inrush 80A 14VDC
lamp load (120W)
100,000 ops. minimum
(FBR51N( )-WL type)
- Test circuit
- Current wave form
Operations ( x 103 operations)
Contact resistance (mΩ)
Contact resistance
Initial
(measured at 6VDC 1A wet)
Percent of rated coil voltage(%)
Operations ( x 103 operations)
Initial
- Test item
Inrush 11A 14VDC
flasher, hazard lamp
(80W)load 2,500,000
operations minimum
(FBR51N( )-WF type)
- Test circuit
- Current wave form
N.O.
Operate
Release
(1st time)
Not for New Design
FBR51, 52 Series FBR51, 52 Series FBR51, 52 Series
7
Coil Temperature Rise
Coil Temperature Rise
Shock Resistance Characteristics
Operating Coil Voltage Range
－30 0 50 100
5
10
15
〔FBR51ND09-( )〕 〔FBR51ND12-( )〕
－
30 0 50 100
5
10
15
0
010 20 30
20
40
60
80
100
120
0.8 W
0.6 W
0.8 W
0.6 W
0.8 W
0.6 W
FBR51
Y
Z
X
10
50
100
10 50 100 500 1000 2000
5 1 0.5 0.1 0.01
44
m/s
2
0
200
400
600
800
1,000
X1 X2 Y1 Y2 Z1 Z2
FBR51
Z2
Z1
Y1
Y2
X2
X1
Coil temperature rise (degC)
Applied time (minutes)
Acceleration(m/s2)
Frequency (Hz)
Shock direction
Shock level (m/s2)
Automotive
electronics standard
Double amplitude (mm)
Frequency: 10 to 2000 Hz
Acceleration: 100m/s2 max.
Direction of vibration: see under diagram
Detection level: chatter >1ms.
Ambient temperature(degC)
Applied voltage to the coil (V)
Applied voltage to the coil (V)
Ambient temperature(degC)
(3) carrying current:20A
applied coil power
NOTE: Intermittent coil
operation is required in the
carrying current.
NOTE: Intermittent coil
operation is required in the
carrying current.
(2) carrying current:10A
applied coil power
(1) carrying current: 0A
applied coil power
at 20degC
Continuously
applicable
coil voltage range
Continuously
applicable
coil voltage range
Must operate voltage
Must operate voltage
N.O. contact
coil not energized
on X-direction
Range where
chattering occurs
: N.C.contact (coil de-energized)
N.O.contact: min. 1,000m/s2 in all directions
Shock application time: 6+/-1ms, half-sine wave
Test material: coil, energized and de-energized
Shock direction: set under diagram
Detection level: chatter > 1ms.
Not for New Design
FBR51, 52 SeriesFBR51, 52 Series FBR51, 52 Series
8
Maximum Switching Power Live Curve
Initial Distributions data
10
10
15
12
20
25
30
35
40
50
　
20
15 25 3530 40 50
FBR51
FBR52
10
50
100
200
300
2015 25 3530 40 50
100
80
60
20
40
012345678
0
100
80
60
20
40
0 10 20 30 40 50 60 70 80
0
80
60
40
20
010 20 30 40 50 60 70 80
0
Conatact voltage (VDC)
Conatact current (A)
Locked motor load 14VDC locked motor load
Locked motor current (A)
Life (10x103 operations)
W1 contact
Distribution of operate and release voltage Distribution of operate and release time Distribution of contact resistance
Distribution (%)
Distribution (%)
Distribution (%)
Time (ms) Contact Resistance (mΩ)Nominal voltage multiplying factor (%)
Operate Operate
Release Release
FBR52
n=100 FBR52
n=100 FBR52
n=100
Not for New Design
■ Dimensions
• Dimensions
FBR51, 52 Series
9
• Schematics
(BOTTOM VIEW)
• PC Board Mounting Hole Layout
(BOTTOM VIEW)
14.0 max.
13.7 typ.
0.3
2.5 10.2
1
t = 0.4
1(1.6)
(1.05)
3.5
10
5
1.2
t = 0.3
12.3 max.
12.1 typ.
15.7 max.
15.5 typ.
FBR50-WL
N.C.
N.O.
4
5
2
1
COM
(+)
(-)
FBR50-WF
N.C.
N.O.
4
5
23
1
COM
(+)
(-)
Refer to the test circuit at CHARACTERISTIC DATA
for connection, and polarity.
4
5
23
1
COM
FBR50-W1
N.O.
N.C.
4-φ1.3
5
10
10.22.5
φ1.4
* Dimensions of the terminals do not include thickness of pre-solder.
( ): Reference value
Unit: mm
* Tolerance of PC board mounting hole layout : ±0.1 unless otherwise specied.
Not for New Design
FBR51, 52 Series
GENERAL INFORMATION
1. ROHS Compliance
• All relays produced by Fujitsu Components are compliant with RoHS directive 2011/65/EU including amendments.
• Use of Cadmium in electrical contacts is exempted as per Annex III of the RoHS directive 2011/65/EU. Please consider
expiry date of exemption. Relays with Cadmium containing contacts are not to be used for new designs.
• All relays are lead-free. Please refer to Lead-Free Status Info for older date codes at:
http://www.fujitsu.com/downloads/MICRO/fcai/relays/lead-free-letter.pdf
• Characteristic data is not guaranteed values, but measured values of samples from production line.
2. Recommended lead free solder condition
• Lead free solder plating on relay terminals is Sn-3.0Ag-0.5Cu, unless otherwise specied. This material has been veri-
ed to be compatible with PbSn assembly process.
• Recommended solder for assembly: Sn-3.0Ag-0.5Cu.
3. Moisture Sensitivity
• Moisture Sensitivity Level standard is not applicable to electromechanical relays, unless otherwise indicated.
4. Tin Whiskers
• Dipped SnAgCu solder is known as presenting a low risk to tin whisker development. No considerable length whisker
was found by our in house test.
We highly recommend that you conrm your actual solder conditions
Flow Solder Condition:
Pre-Heating: maximum 120˚C
within 90 sec.
Soldering: dip within 5 sec. at
255˚C ± 5˚C solder bath
Relay must be cooled by air
immediately after soldering
Solder by Soldering Iron:
Soldering Iron: 30-60W
Temperature: maximum 350-360˚C
Duration: maximum 3 sec.
10
Cautions
• All values mentioned in this datasheet are provided under ideal conditions. Please perform the conrmation test
before actual use.
• Please connect relay coils according to specied polarity.
• Reow soldering is prohibited.
• Do not use relays in the atmosphere with sulde gas, chloride gas or nitric oxide. Contact resistance may increase.
• Do not use silicon or silicon-containing product or materials near relays. It may cause contact failure.
Not for New Design
FBR51, 52 Series FBR51, 52 Series
Fujitsu Components International Headquarter Ofces
©2019 Fujitsu Components Europe B.V. All rights reserved. All trademarks or registered trademarks are the property of their respective owners.
The contents, data and information in this datasheet are provided by Fujitsu Component Ltd. as a service only to its user and only for general
information purposes.
The use of the contents, data and information provided in this datasheet is at the users’ own risk.
Fujitsu has assembled this datasheet with care and will endeavor to keep the contents, data and information correct, accurate, comprehensive, complete and up
to date.
Fujitsu Components Europe B.V. and afliated companies do however not accept any responsibility or liability on their behalf, nor on behalf of its employees, for
any loss or damage, direct, indirect or consequential, with respect to this datasheet, its contents, data, and information and related graphics and the correctness,
reliability, accuracy, comprehensiveness, usefulness, availability and completeness thereof.
Nor do Fujitsu Components Europe B.V. and afliated companies accept on their behalf, nor on behalf of its employees, any responsibility or liability for any
representation or warrant of any kind, express or implied, including warranties of any kind for merchantability or tness for particular use, with respect to these
datasheets, its contents, data, information and related graphics and the correctness, reliability, accuracy, comprehensiveness, usefulness, availability and com-
pleteness thereof. Rev. January 11, 2019
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Email: fcal@sg.fujitsu.com
www.fujitsu.com/sg/products/devices/components/
11
Not for New Design