AUTOMOTIVE RELAY
1 POLE – 40A

FBR53-LE Series
 FEATURES
The world smallest class* ultra compact high power 40A relay
Maximum inrush current 200A
Maximum carrying current 54A (at 20℃, 1 hour)
High temperature grade (-40℃ to +125℃）
Low coil power approx. 0.64W
This relay is able to replace the Mini ISO relay
Reflow capable (through hole reflow) type available
Plastic sealed* Per internal investigation (December 2023)

 APPLICATIONSElectric power steering, blower fan motor control, starter APPLICABLE LOADS
Resistive, Inductive, capacitive PARTNUMBER INFORMATION[Example]

FBR53ND12 - Y - LE - RW

(a)

(b)

(c)

(d)

(e)

(f)

(a)

Relay typeFBR53

: FBR53 Series(b)EnclosureN: Plastic sealed type(c)Coil rated voltage

D12: 12VDC(d)Contact materialY: Silver tin oxide(e)Contact rating

LE: 40A(f)

Soldering

NilRW: Standard (Flow soldering): Reflow capable (THR)

Note: Actual marking does not carry the type name “FBR”
E.g.: Ordering code: FBR52ND012Y-LE, actual marking: 53ND012-Y-LE1

FBR53-LE Series
 SPECIFICATIONS
ItemSpecification
Configuration

1 Form U

Material

Silver tin oxide

Construction

SingleRating

40A 14VDC
54A / 1 hour at 20℃

Fuse matching*1

54A / 30min at 20℃
50A / 30min at 85℃
47A / 30min at 125℃
80A / 1min at 20℃

Max. inrush current

200A

Min. switching load

1A 12VDC

Reference*2

Voltage drop

Max. 100mVAt 1A 12VDC, initial

Rated power consumption

640mW

At rated coil voltage, at 20℃

Operate coil power

237mW

At operate voltage, at 20℃

Operating temperature range-40℃ to +125℃*3

OperateMax. 10ms

At rated coil voltage, withoutbounce

ReleaseMax. 5ms

At rated coil voltage, withoutbounce, without diodeMechanicalMin. 1 x 106 operations

TimeLife

Electrical

Resistive

Min. 100 x 103 operations

14VDC, resistive load 50A

Inductive

Min. 100 x 103 operations

Inrush 47A, 14VDC, steady 10.5A

Capacitive

Min. 100 x 103 operations

inrush 120A, 13VDC, steady 20A

Insulation resistance
Insulation

Resistive

Max. carrying current*1
Contact
data

CoilRemarks

Dielectricwithstandingvoltage
Vibration
resistance

OthersShockresistanceMin. 100MΩ

At 500VDC initial

Open contacts

500VAC (50/60Hz), 1 minuteInitialCoil-contact

500VAC (50/60Hz), 1 minuteInitialMisoperation

10 to 200Hz, acceleration 44m/s2 (4.5G) Direction X, Y, Z, coil ON/OFF total
6 cyclesconstant acceleration

Endurance

10 to 200Hz, acceleration 44m/s2 (4.5G) Direction X, Y, Z, coil OFF total 6
constant accelerationhours

Misoperation

100m/s2 (11±1ms)

Direction X, Y, Z, coil ON/OFF total
36 times

Endurance

1,000m/s2 (6±1ms)

Direction X, Y, Z, coil OFF total 18times

Dimensions / weight

12.1 x 15.5 x 13.7 mm / Approx. 6g*1: The data for “Max. Carrying Current” and “Fuse matching” are based on an applied voltage of 14 VDC to the coil.
*2: Minimum switching loads mentioned above are reference values. Please perform the confirmation test with actual load before
production since reference values may vary according to switching frequencies, environmental conditions and expected
reliability levels.
*3: Relays shall be kept frost free.
Care shall be taken on the heat generated on PC board when maximum carrying current exceed 10A.

2FBR53-LE Series
 COIL DATA
CoilCodeRated Coil Voltage(VDC)

Coil Resistance±10% (Ω）

D1212225

Must Operate Voltage* Must Release Voltage*
(VDC)
(VDC)
7.3 (at 20℃)
10.4 (at 125℃)

1.0 (at 20℃)
1.5 (at 125℃）

Rated Power(W)
Approx. 0.64

Note: All values in the table are valid for 20℃ and zero contact current unless otherwise specified.
Note: Please use at rated coil voltage.
*: Specified operated values are valid for pulse voltage.

 DIMENSIONS

3.5

14.0 Max.
13.7 Typ.

 Dimensions

2.541012.3 Max.
12.1 Typ.

6

COM terminal: 2.2 x 0.25t
N.O. terminal: 2.2 x 0.4t
Coil terminal: 1.0 x 0.3t
torelance ±0.1

Dimensions of the terminals do no include thickness of pre-solder.
Dimensions do no include tolerances.

 Schematics(BOTTOM VIEW)

 PC Board Mounting Hole Layout(BOTTOM VIEW)
2.5

10.6

(1.25)+0.1

3

Pattern shall be designed to short-circuit#4 and #5 on the PC board.

A)
(R2.5
2-Φ1.3 +0.1-02-2.5x0.6 +0.1-0B

2-2.5x0.7 +0.1-0B)

6A+0.1
0.7 -05(R1461042•

1.2

0.6 -0••10.6
15.7 Max.
15.5 Typ.

2.5
Unit: mm3

FBR53-LE Series
CAUTIONS
・All values mentioned in this datasheet are provided under ideal conditions. Please perform the confirmation
test before actual use.
Reflow
soldering is prohibited for flow soldering type.
・・Do not use relays in the atmosphere with sulfide gas, chloride gas or nitric oxide. Contact resistance mayincrease.
・Do not use silicon or silicon-containing product or materials near relays. It may cause contact failure.

GENERAL INFORMATION
1. ROHS Compliance• All relays produced by FCL Components are compliant with RoHS directive 2011/65/EU, including
commission delegated directive 2015/863.

2. Recommended lead free solder condition• Lead free solder plating on relay terminals is Sn-3.0Ag-0.5Cu, unless otherwise specified. This material has
been verified to be compatible with PbSn assembly process.

• Recommended solder for assembly: Sn-3.0Ag-0.5Cu.
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 aftersoldering

Solder by Soldering Iron:

Soldering Iron: 30-60W
Temperature: maximum 340-360˚CDuration:maximum 3 sec.

Refow Solder Condition:(Applicable only for reflow capable type)

Recommended reflow soldering profile
IRS (infrated reflow soldering)Temperature (°C)

Flow Solder Condition:

Pre-Heating:250

Peak temperature: Max.250°C

220
170
130

Pre-heating

Air cooling90 to 120 sec. 20 to 30 sec.
Max.120 sec.

(Time)

We highly recommend that you confirm your actual solder conditions
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.

4ContactJapan
FCL COMPONENTS LIMITED
Shinagawa Seaside Park Tower
12-4, Higashi-shinagawa 4-chome,
Tokyo 140 0002, Japan
Tel: +81-3-3450-1682
Email: fcl-contact@cs.fcl-components.com

North and South America
FCL COMPONENTS AMERICA, INC.
2055 Gateway Place Suite 480,
San Jose, CA 95110 USATel: +1-408-745-4900
Email: fcai.components@fcl-components.com

EuropeFCL COMPONENTS EUROPE B.V.
Diamantlaan 25
2132 WV Hoofddorp, Netherlands
Tel: +31-23-556-0910
Email: info.fceu@cs.fcl-components.com

Asia Pacific
FCL COMPONENTS ASIA PTE LTD.
No. 20 Harbour Drive, #07-01B
Singapore 117612
Tel: +65-6375-8560
Email: fcal@fcl-components.com

China
FCL COMPONENTS (SHANGHAI) CO.,LTD.
Unit 1105, Central Park - Jing An,
No.329 Heng Feng Road, Shanghai
200070, China
Tel: +86-21-3253 0998
Email: fcsh@fcl-components.comHong Kong
FCL COMPONENTS HONG KONG CO., LIMITED
Unit 2313, Seapower Tower, Concordia
Plaza, No.1 Science Museum Road,TST, Kowloon, Hong Kong
Tel: +852-2881-8495
Email: fcal@fcl-components.com

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FCL Products are intended for general use, including without limitation, in personal, household and office environments, in buildings
and for ordinary use in the industry. FCL Products are not intended to be used in applications where extremely high safety is required(”High Safety Required Applications”), such as, but not limited to, applications in nuclear facilities, in aircraft automatic flight control, in airtraffic control, in mass transit system control, in missile launch system, in weapon systems, in medical equipment for life support or any
application involving a direct serious risk of physical injury or death.
Please do not use FCL Products without securing the sufficient safety and reliability required for the High Safety Required Applications.
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and workmanship for twelve months from delivery.
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general information purposes. The use of the contents, data and information provided in this datasheet is at the users’ own risk.
FCL has assembled this datasheet with care and will endeavor to keep the contents, data and information correct, accurate, comprehensive, complete and up to date.
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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 FCL Components Limited and affiliated companies accept on their behalf, nor on behalf of its employees, any responsibility orliability with respect to these datasheets, its contents, data, information and related graphics and the correctness, reliability, accuracy,comprehensiveness, usefulness, availability and completeness thereof. Rev. June 25, 2024.