EEWORLDEEWORLDEEWORLD

Part Number

Search

SF10U1210ATL

Description
Fixed Resistor, Metal Film, 0.25W, 121ohm, 200V, 0.05% +/-Tol, 25ppm/Cel, Surface Mount, 1210, CHIP
CategoryPassive components    The resistor   
File Size657KB,10 Pages
ManufacturerWalsin Technology Corporation
Environmental Compliance
Download Datasheet Parametric View All

SF10U1210ATL Overview

Fixed Resistor, Metal Film, 0.25W, 121ohm, 200V, 0.05% +/-Tol, 25ppm/Cel, Surface Mount, 1210, CHIP

SF10U1210ATL Parametric

Parameter NameAttribute value
Is it Rohs certified?conform to
Objectid145044259638
package instructionCHIP
Reach Compliance Codecompliant
Country Of OriginMainland China
ECCN codeEAR99
YTEOL7.95
Other featuresANTI-SULFUR, HIGH PRECISION
structureRectangular
Installation featuresSURFACE MOUNT
Number of terminals2
Maximum operating temperature155 °C
Minimum operating temperature-55 °C
Package height0.55 mm
Package length3.1 mm
Package formSMT
Package width2.6 mm
method of packingTR, PAPER, 7 INCH
Rated power dissipation(P)0.25 W
Rated temperature70 °C
resistance121 Ω
Resistor typeFIXED RESISTOR
size code1210
surface mountYES
technologyMETAL FILM
Temperature Coefficient25 ppm/°C
Terminal shapeWRAPAROUND
Tolerance0.05%
Operating Voltage200 V

SF10U1210ATL Preview

Approval Sheet
SF25U,SF20U,SF10U,SF12U,SF08U,
SF06U,SF04U
1.0%, 0.5%,
0.25%,
0.1%, 0.05%
TC25
High Precision Thin Film chip resistors
Size 2512, 2010, 1210, 1206, 0805, 0603,
0402
(Anti-Sulfuration )
*Contents in this sheet are subject to change without prior notice.
Page 1 of 10
ASC_SFxxU_V03
SEP - 2017
Approval Sheet
FEATURE
1. SMD metal film resistor
2. High reliability and stability of 0.5% and below per customer request
3. High performance of TCR: 25 ppm/K and below per customer request
4. Low current noise
5. Sulfuration resistant against ASTM B-809
6. RoHS compliant and Lead free products
APPLICATION
Medical equipment
Measuring instrument
Communication device
Computer
Printer
DESCRIPTION
The resistors are constructed in a high grade ceramic body (aluminum oxide). Internal metal electrodes are
added at each end and connected by a resistive layer that is applied to the top surface of the substrate. The
composition of the resistive layer is adjusted to give the approximate resistance required and the value is
trimmed to nominated value within tolerance which controlled by laser trimming of this resistive layer.
The resistive layer is covered with a protective coat. Finally, the two external end terminations are added. For
environmental soldering issue, the outer layer of these end terminations is a Lead-free solder .
Fig 1. Construction of Chip-R SFxxU
Page 2 of 10
ASC_SFxxU_V03
SEP - 2017
Approval Sheet
QUICK REFERENCE DATA
Item
Series No.
Size Code
SF25U
2512
(6432)
Resistance
Tolerance
Resistance Range
4.7 ~
3M
TCR
Max. Dissipation at
T
amb
=70C
Max. Operation
Voltage
Max. Overload
Voltage
Operation
Temperature
Note :
1.
2.
This is the maximum voltage that may be continuously supplied to the resistor element, see “IEC publication
60115-8”
Max. Operation Voltage : So called RCWV (Rated Continuous Working Voltage) is determined by
RCWV
½
Rated
Pow er
Resistance
Value
General Specification
SF20U
2010
(5025)
SF10U
1210
(3225)
SF12U
1206
( 3216 )
SF08U
0805
( 2012 )
SF06U
0603
( 1608 )
SF04U
0402
( 1005 )
1.0%, 0.5%, 0.25%, 0.1%, 0.05%
4.7 ~
3M
4.7 ~
2.49M
4.7 ~
2.49M
25
ppm/C
3/4W
200V
400V
1/2W
200V
400V
1/4W
200V
400V
1/8W
200V
400V
- 55~ +155’C
1/10W
100V
200V
1/16W
50V
100V
1/16W
25V
50V
4.7 ~
2M
4.7 ~
1M
10 ~
255K
or Max. RCWV listed above, whichever is lower.
3.
Tolerance :
0.01%
is upon requested
DIMENSIONS: (unit:mm)
Type
L
W
A
B
t
SF25U
6.35
0.10
3.20
0.15
0.60
0.20
0.90
0.25
0.55
0.10
SF20U
5.00
0.10
2.50
0.15
0.60
0.20
0.60
0.25
0.55
0.10
Protective coat
SF10U
3.10
0.10
2.60
0.15
0.50
0.20
0.50
0.20
0.55
0.10
SF12U
3.05
0.15
1.55
0.15
0.40
0.20
0.40
0.20
0.55
0.15
SF08U
2.00
0.10
1.25
0.10
0.25
0.20
0.40
0.20
0.50
0.15
SF06U
1.55
0.10
0.80
0.10
0.25
0.15
0.30
0.15
0.45
0.15
SF04U
1.00
0.10
0.50
0.05
0.15
0.10
0.25
0.10
0.30
0.05
t
B
A
End termination
Resistive layer
Ceramic Substrate
WT
1001
L
Page 3 of 10
ASC_SFxxU_V03
SEP - 2017
Approval Sheet
MARKING
3-digits marking for 0603 size
SFxxU has same marking rule as WRxx ±1%.
3-digits marking(1%
: 0603)
Nominal resistance
1.E-24 series
2.E-96 series
As
0603 WR06X
5%.
The 1st two digit codes are referring to the CODE on the table, the 3rd code is the index of resistance
value :
Y=10
-2
,X=10
-1
,A=10
0
,B=10
1
,C=10
2
,D=10
3
,E=10
4
,F=10
5
EX :
17.8Ω=25X,178Ω=25A,1K78 =25B
17K8=25C, 178K=25D, 1M78=25E
3. Remark
CODE
R_value
CODE
R_value
Description
There is no marking for the items are not under E-24 and E-96 series
CODE R_Value CODE
R_value
CODE
R_value
CODE
R_value
CODE
R_value
CODE
R_value
01
02
03
04
05
06
07
08
09
10
11
12
100
102
105
107
110
113
115
118
121
124
127
130
13
14
15
16
17
18
19
20
21
22
23
24
133
137
140
143
147
150
154
158
162
165
169
174
25
26
27
28
29
30
31
32
33
34
35
36
178
182
187
191
196
200
205
210
215
221
226
232
37
38
39
40
41
42
43
44
45
46
47
48
237
243
249
255
261
267
274
280
287
294
301
309
49
50
51
52
53
54
55
56
57
58
59
60
316
324
332
340
348
357
365
374
383
392
402
412
61
62
63
64
65
66
67
68
69
70
71
72
422
432
442
453
464
475
487
499
511
523
536
549
73
74
75
76
77
78
79
80
81
82
83
84
562
576
590
604
619
634
649
665
681
698
715
732
85
86
87
88
89
90
91
92
93
94
95
96
750
768
787
806
825
845
866
887
909
931
953
976
4-digits marking for 2512, 2010, 1210, 1206, 0805 size
For E24+E96, each resistor is marked with a four digits code on the protective coating to designate the
nominal resistance value. For values below 976 the R is used as a digit. For values of 100 or greater, the
first 3 digits are significant, the fourth digit indicates the number of multiple to follow.
Example
RESISTANCE
4-digits marking
10
10R0
12
12R0
100
1000
6800
6801
47000
4702
No marking code for 0402 size
Page 4 of 10
ASC_SFxxU_V03
SEP - 2017
Approval Sheet
FUNCTIONAL DESCRIPTION
Product characterization
Standard values of nominal resistance are taken from the E192 & E24 series for resistors with a tolerance of
0.5%, 0.25%, 0.1%.
The values of the E24/E192 series are in accordance with “IEC publication 60063”
Derating
The power that the resistor can dissipate depends on the operating temperature; see Fig.2
MOUNTING
Due to their rectangular shapes and small tolerances, Surface Mountable Resistors are suitable for handling by
automatic placement systems.
Chip placement can be on ceramic substrates and printed-circuit boards (PCBs).
Electrical connection to the circuit is by individual soldering condition.
The end terminations guarantee a reliable contact.
Page 5 of 10
ASC_SFxxU_V03
SEP - 2017
AC/DC voltage and current signal ADC acquisition
1. Current signal acquisitionThe current signal needs to be converted into a voltage signal for acquisition, as shown in the following figure:Figure 1 After the voltage collected by the MCU ADC is con...
fish001 Analogue and Mixed Signal
EEWORLD University Hall----Microelectronic Devices and IC Design (Huazhong University of Science and Technology)
Microelectronic Devices and IC Design (Huazhong University of Science and Technology) : https://training.eeworld.com.cn/course/6035Through the study of this course, students will master the basic theo...
桂花蒸 Analog electronics
Looking for QFN32/LQFP128 package PCB parts library
Looking for QFN32 and LQFP128 package PCB parts library...
zttian PCB Design
【Deep Learning】Free technical documentation download|Littelfuse Data Center Solutions Zone
Today’s data centers need to process massive amounts of data from millions of mobile devices and other items that make up the Internet of Things. To keep these facilities running properly, data center...
EEWORLD社区 Discrete Device
Analysis of film deformation problem in PCB process
1. Causes and solutions for film deformation:   Cause:  (1) Temperature and humidity control failure  (2) Exposure machine temperature rise is too high  Solution:  (1) Normally, the temperature is con...
ohahaha PCB Design
Amazing TI, the LaunchPad 28377s page no longer exists?
I have a 28377S board, and I also had a 28379D board that burned out when using ADC. Recently, I want to use a CAN bus, so I found the 28377S board and entered the product page of TMS320F28377S. There...
littleshrimp DSP and ARM Processors

EEWorld
subscription
account

EEWorld
service
account

Automotive
development
circle

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 © 2005-2024 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