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235ER-R249-FT10

Description
Fixed Resistor, Wire Wound, 5W, 0.249ohm, 5V, 1% +/-Tol, 10ppm/Cel,
CategoryPassive components    The resistor   
File Size41KB,1 Pages
ManufacturerRCD Components Inc.
Websitehttp://www.rcdcomponents.com/
Download Datasheet Parametric View All

235ER-R249-FT10 Overview

Fixed Resistor, Wire Wound, 5W, 0.249ohm, 5V, 1% +/-Tol, 10ppm/Cel,

235ER-R249-FT10 Parametric

Parameter NameAttribute value
Objectid261741101
Reach Compliance Codecompliant
Country Of OriginMainland China, Saint Lucia, USA
ECCN codeEAR99
YTEOL7.2
structureCylindrical
Lead diameter0.8 mm
Number of terminals2
Maximum operating temperature350 °C
Minimum operating temperature-55 °C
Package diameter4.78 mm
Package length15.1 mm
Package shapeCYLINDRICAL PACKAGE
Package formAxial
method of packingTR
Rated power dissipation(P)5 W
resistance0.249 Ω
Resistor typeFIXED RESISTOR
series200
technologyWIRE WOUND
Temperature Coefficient10 ppm/°C
Tolerance1%
Operating Voltage5 V
MINIATURE WIREWOUND RESISTORS
1 WATT to 10 WATT
RESISTORS CAPACITORS COILS DELAY LINES
200 SERIES
RoHS
Term.W is
RoHS
compliant
& 260°C
compatible
Significant space savings!
Tolerance to +0.01%, TCR to 5ppm/°C
Wide resistance range: 0.005Ω to 250K
Available on exclusive
SWIFT
TM
delivery program
All sizes available on Tape & Reel
OPTIONS
Option X: Low Inductance
Option P: Increased Pulse Capability
Option F: Flameproof Coating
Option ER: 100-Hour Burn-In
Also available: low thermal emf (opt.E), matched sets, cut &
formed leads, special marking, 4-terminal, hi-rel screening,
hermetic seal, non-standard values, increased voltage, etc.
Customized components are an RCD speciality!
TYPICAL SIZE COMPARISON
2W carbon composition
2W wirewound (standard)
2W wirewound (type 210)
Typically half the size of conventional resistors! Type 202 is
world’s smallest wirewound resistor!
Series 200 resistors
offer the same MIL-grade construction as Series 100 resistors
except utilize proprietary materials and processing, enabling
significant size reductions. Series 200 resistors are ideal
when PCB real estate is at a premium! Highest grade
materials enable excellent stability and environmental
performance.
DERATING:
Power resistors reach elevated temperatures when
operated near full wattage, and therefore should be mounted
off the PCB and derated according to required stability levels.
% OF RATED POWER
100
80
60
40
20
0
25
50
75
100
125 150 175 200
AMBIENT TEMPERATURE (°C)
225
250
275
300
1.375” Min
3
A
Type 202 is 1.1”
B
D
C
DIMENSIONS
RCD
Type
Wattage
Rating
Maximum
Voltage
1
Resistance
Range
A
.150 ±.032
[ 3.81 ± .8]
.250 ±.040
[6.35 ±1]
.350 ±.040
[8.9 ±1]
.500 ±.040
[ 12.7 ±1]
.625 ±.040
[15.9 ±1]
1.040 ±.048
[26.4 ±1.2]
B (Max)
.200
[5.08]
.300
[7.62]
.480
[12.2]
.595
[15.1]
.765
[19.4]
1.125
[28.6]
C
2
.064 ±.02
[1.63 ± .5]
.093 ±.025
[2.36 ± .6]
.140 ±.032
[3.56 ± .8]
.188 ±.032
[4.78 ± .8]
.232 ±.032
[5.89 ± .8]
.350 ±.032
[8.89 ± .8]
Inch [mm]
D (Nominal Diameter)
Standard
.020
[0.5]
.020
[0.5]
.031
[0.8]
.031
[0.8]
.040
[1.0]
.040
[1.0]
Optional
N/A
.024 (Opt."22")
[0.6]
N/A
.040 (Opt."18")
[1.0]
N/A
N/A
202
210
232
235
255
272
1
2
1.0W
2.0W
3.0W
5.0W
7.0W
10W
30V
40V
60V
157V
210V
600V
.01
to 2K
.01
to 10K
.005
to 20K
.005
to 40K
.005
to 80K
.005
to
250K
Volt rating determined by E =
√(
PR), E not to exceed max. rating. Increased ratings available. Multiply by 0.7 for Opt. X
Allow .032” additional for Option X and values below 1.0Ω
3
Lead length applies to bulk packaged parts units, parts supplied on tape may be shorter (refer to taping specification)
SPECIFICATIONS:
Te m p e r a t u r e
C o e f f i c i e nt t yp .
( C o ns ul t f a c t o r y
fo r TC o n o p t. P )
.0 0 5 - .0 0 9 9
Ω :
6 0 0 p p m s td (2 0 0 , 3 0 0 p p m o p t.)
.0 1 - .0 4 9
Ω:
3 0 0 p p m s td (1 0 0 , 2 0 0 p p m o p t.)
.0 5 - .0 9 9
2 0 0 p p m s td (5 0 , 1 0 0 p p m o p t.)
.1 - .9 9
:
9 0 p p m s td (1 0 , 2 0 , 3 0 , 5 0 p p m o p t)
1 - 9 .9
:
5 0 p p m s td (1 0 , 2 0 , 3 0 p p m o p t.)
1 0
& a b o ve : 2 0 p p m s t d ( 5 , 1 0 p p m o p t . )
1 t o 5 0 µ H t yp i c a l , d e p e nd s o n s i ze & r e s i s t a nc e
va l ue . S p e c i f y O p t . X f o r no n- i nd uc t i ve
p e r f o r m a nc e ( s e e b e l o w ) .
50
>
50
Ty p e 2 0 2 X - 2 3 5 X : 0 . 2 µ H M a x 0 . 3 7 µ H M a x
Ty p e 2 5 5 X :
0 .3 µ H Ma x 0 .6 µ H Ma x
Ty p e 2 7 2 X :
0 .6 µ H Ma x 1 .0 µ H Ma x
5 X ra te d W 2 0 2 -2 3 5 , 1 0 X ra te d W 2 5 5 -2 7 2
P/N DESIGNATION:
RCD Type
Options:
X, P, F, ER, E, 22, 18
(leave blank if standard)
210
- 1001 - F B
W
In d u c t a n c e ,
S t a nd a r d
Resis. Code
:
1%:
3 signif. figures & multiplier,
e.g. R100= 0.1Ω, 1R00= 1Ω,1000= 100Ω, 1001= 1KΩ.
Resis. Code 2% - 10%:
2 signif. figures & multiplier,
e.g. R10= 0.1Ω, 1R0= 1Ω,100= 10Ω, 101=100Ω, 102= 1KΩ.
Use extra digits as needed: e.g. R005, R0075, R012
Tolerance:
K=10%, J=5%, H=3%,F=1%, D=0.5%,
C=0.25%, B=0.1%, A=0.05%, Q=0.02%, T=0.01%
Packaging:
B = Bulk, T = T&R
Optional TC:
5= 5ppm, 10= 10ppm, etc., if 100ppm & above use 3-digit
code: 101 = 100ppm, 201= 200ppm, etc. (leave blank if standard)
Termination:
W= Lead-free, Q= Tin/Lead (leave blank if either is acceptable,
in which case RCD will select based on lowest price and quickest delivery
In d u c t a n c e , O p t . X
( l e ve l s a s l o w a s
2 0 nH a va i l . )
O ve r l o a d , 5 S e c .
D i e l e c t r i c S t r e n g t h 5 0 0 V ( 3 0 0 V Ty p e 2 0 2 ) , 1 K V a v a i l a b l e ( O p t . 3 3 )
RCD Components Inc,
520 E.Industrial Park Dr, Manchester, NH, USA 03109
rcdcomponents.com
Tel: 603
-
669
-
0054 Fax: 603
-
669
-
5455 Email:sales@rcdcomponents.com
FA014D Sale of this product is in accordance with GF-061. Specifications subject to change without notice.
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