EEWORLDEEWORLDEEWORLD

Part Number

Search

FN4-R43MI

Description
Fixed Resistor - Fusible, 0.4W, 0.43ohm, 20% +/-Tol, Through Hole Mount, AXIAL LEADED
CategoryPassive components    The resistor   
File Size364KB,3 Pages
ManufacturerTT Electronics plc
Websitehttp://www.ttelectronics.com/
Environmental Compliance
Download Datasheet Parametric View All

FN4-R43MI Overview

Fixed Resistor - Fusible, 0.4W, 0.43ohm, 20% +/-Tol, Through Hole Mount, AXIAL LEADED

FN4-R43MI Parametric

Parameter NameAttribute value
Is it Rohs certified?conform to
Objectid1580885205
package instructionAXIAL LEADED
Reach Compliance Codecompliant
ECCN codeEAR99
YTEOL0
Other featuresFLAME PROOF; FUSING POWER: 1.5W
fuse time30 s
JESD-609 codee3
Manufacturer's serial numberFN
Installation featuresTHROUGH HOLE MOUNT
Maximum operating temperature155 °C
Minimum operating temperature-55 °C
Package shapeTUBULAR PACKAGE
method of packingAMMO PACK
Rated power dissipation(P)0.4 W
Rated temperature70 °C
resistance0.43 Ω
Resistor typeFIXED RESISTOR - FUSIBLE
surface mountNO
Terminal surfaceTin (Sn)
Terminal shapeWIRE
Tolerance20%

FN4-R43MI Preview

Fusible Nickel
Film Resistors
FN Series
Welwyn Components
Predictable fusing characteristics
Constant current fusing
Flameproof
Electrical Data
FN4
Power rating at 70°C
Resistance range
TCR
Resistance tolerance*
Standard values
Thermal impedance
Ambient temperature range
°C/watt
°C
watts
ohms
ppm/°C
%
0.4
0R1 to 20R
See Figure 1
5, 10, 20
E24 preferred
215
-55 to 155
* Below 1R, 10 and 20% only.
Physical Data
Dimensions (mm) & Weight (g)
PCB
mounting
Type
FN4
L Max
6.2
D Max
2.5
f min
21.0
d nom
0.6
centres
10.2
Min.
bend
radius
0.6
Wt.
nom
0.3
d
D
L
f
Construction
The nickel film is deposited on a high purity ceramic rod. End
caps are force fitted and termination wires welded to the
caps. The resistive film is adjusted to the required value by a
helical cut; finally the flame retardant lacquer protection is
applied to the resistor body and the resistor is marked with an
indelible ink.
Marking
Resistors are colour coded with five bands. Four of the bands
are used to indicate value and tolerance, with IEC 62 colours
being used. A fifth black band denotes constant current
fusibility.
Solvent Resistance
The body protection and marking are resistant to all normal
industrial cleaning solvents suitable for printed circuits.
Terminations
Material
Strength
Solder-coated copper wire.
The terminations meet the requirements of
IEC 68.2.21
Flammability
The resistors will not burn or emit encandescent particles
under any condition of applied temperature or power
overload.
Solderability
The terminations meet the requirements of
IEC 115-1, Clause 4.17.3.2
General Note
Welwyn Components reserves the right to make changes in product specification without notice or liability.
All information is subject to Welwyn’s own data and is considered accurate at time of going to print.
A subsidiary of
TT electronics plc
Issue B · 03.02
© Welwyn Components Limited
· Bedlington, Northumberland NE22 7AA, UK
Telephone: +44 (0) 1670 822181 · Facsimile: +44 (0) 1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com
168
Fusible Nickel
Film Resistors
FN Series
Welwyn Components
Performance Data
Maximum
Load: 1000 hours at 70°C
Shelf life: 12 months at room temperature
Derating from rated power at 70°C
Long term damp heat
Resistance to solder heat
Fusing characteristics
∆R%
∆R%
∆R%
∆R%
1
0.5
zero at 155°C
1
0.5
See Figure 2
Packaging
All FN resistors are supplied tape packed ready for loading on
to automatic sequencing and insertion machines.
Component wires will not protrude beyond the outside edge
of the tapes.
Alternative packaging available by request.
A detailed Packaging Data Sheet is available upon request.
Lead Formed resistors can also be supplied. Standard options
of Lancet, Radial and Goalpost forming are shown in Lead
Form Information section
Fusing
After fusing the final resistance value will be
≥10
times the
initial value.
Standard Quantities Per Package
Type
Large ammo pack
FN4
5000
5
f
1
6
52
f
2
6
Body location f
1
– f
2
1.4 mm
© Welwyn Components Limited
Bedlington, Northumberland NE22 7AA, UK
Telephone: +44 (0) 1670 822181 · Facsimile: +44 (0) 1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com
Issue B · 03.02
169
Fusible Nickel
Film Resistors
FN Series
Welwyn Components
Ordering Procedure
Example: FN4 at 0.33 ohms and 10% tolerance in ammo pack box of 5000 pieces -
FN4
R33 K
I
Type
Value (use IEC62 code)
Tolerance (use IEC62 code)
J
K
M
5%
10%
20%
Packing
I
Ammo
5000/box
Standard
© Welwyn Components Limited
Bedlington, Northumberland NE22 7AA, UK
Telephone: +44 (0) 1670 822181 · Facsimile: +44 (0) 1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com
Issue B · 03.02
169
Help, joint debugging problem between 2812 and AD7732!
Using 2812's SPI to communicate with AD7732, the current problem is: 1. The data of each register of AD7732 can be read through SPI, but it cannot be modified. The flag bit RDY of AD conversion comple...
远方的牛 DSP and ARM Processors
Graduation Project Advice
Dear heroes: My graduation project has been determined. The platform is pxa255+wince4.2. My core board has been realized, including 128M SDRAM and 32M Nor FLASH (EBOOT and kernel). The main functions ...
shi991 Embedded System
STM32 realizes wireless transmission and reception through cc1020
In the process of using the serial port of STM32 to realize wireless transmission and reception through cc1020, how can we reduce the bit error rate when transmitting and receiving a large amount of d...
qrsgcslqg stm32/stm8
AP6212 Firmware
This file contains various versions of AP6212 firmware, AP6212 (A0) AP6212 (A1) AP6212A Our company is the agent of this brand. If you need other Zhengji technical information, please leave a message...
QQ507014762 Linux and Android
BMW ASF active steering system1
Consumers who are addicted to the charm of the BMW brand but have always complained about its overly conservative body shape can finally make a move this time! Under the revolutionary design aesthetic...
frozenviolet Automotive Electronics
Countdown! The 15th Automechanika Shanghai is coming soon
On September 2, Messe Frankfurt and China Machinery International held the launch event for the 15th Automechanika Shanghai (AMS) in Shanghai.More than 180 industry associations, long-term partners an...
eric_wang Automotive Electronics

EEWorld
subscription
account

EEWorld
service
account

Automotive
development
circle

Robot
development
community

Index Files: 648  1462  2067  2292  1051  14  30  42  47  22 
Datasheet   0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Room 1530, 15th Floor, Building B, No. 18 Zhongguancun Street, Haidian District, Beijing Telephone: (010) 82350740 Postal Code: 100190
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved 京ICP证060456号 京ICP备10001474号-1 电信业务审批[2006]字第258号函 京公网安备 11010802033920号