UniOhm
Feature
• Small size and light weight
• Reduction of assembly costs and matching with placement machines
• Suitable for both flow & re-flow soldering
Thick Film Chip Resistors
RoHS Compliant
Figures
Derating Curve & Specification
Ambient temperature (°C)
Type
Max. working Voltage
Max. Overload Voltage
Dielectric withstanding Voltage
Operating Temperature
Type
Power Rating at 70°C
L (mm)
W (mm)
0402
50V
100V
100V
0603
50V
100V
300V
0805
150V
300V
500V
1206
200V
400V
500V
1210
200V
400V
500V
2010
200V
400V
500V
2512
200V
400V
500V
-55~+125°C -55~+125°C -55~+125°C -55~+125°C -55~+125°C -55~+125°C -55~+125°C
0402
1/16W
1.00 ± 0.10
0.50 ± 0.05
0.35 ± 0.05
0.20 ± 0.10
0.25 ± 0.10
0603
1/16W
(1/10W-S)
1.60 ± 0.10
0.80
+0.15
-0.10
0805
1/10W
(1/8W-S)
2.00 ± 0.15
1.25
+0.15
-0.10
1206
1/8W
(1/4W-S)
3.10 ± 0.15
1.55
+0.15
-0.10
1210
1/4W
(1/3W-S)
3.10 ± 0.10
2.60
+0.15
-0.10
2010
1/2W
(3/4W-S)
5.00 ± 0.10
2.50
+0.15
-0.10
2512
1W
6.35 ± 0.10
3.20
+0.15
-0.10
Dimension
H (mm)
A (mm)
B (mm)
0.45 ± 0.10
0.30 ± 0.20
0.30 ± 0.20
0.55 ± 0.10
0.40 ± 0.20
0.40 ± 0.20
0.55 ± 0.10
0.45 ± 0.20
0.45 ± 0.20
0.55 ± 0.10
0.50 ± 0.25
0.50 ± 0.20
0.55 ± 0.10
0.60 ± 0.25
0.50 ± 0.20
0.55 ± 0.10
0.60 ± 0.25
0.50 ± 0.20
Resistance Value of Jumper
Jumper Rated Current
Resistance Range of 0.5% (E-96)
Resistance Range of 1% (E-96)
Resistance Range of 2% (E-24)
Resistance Range of 5% (E-24)
1A
1A
2A
2A
2A
2A
2A
2
Thick Film Chip Resistors
Marking on the Resistors Body:
UniOhm
• For 0402 size, no marking on the body due to the small size of the resistor.
• ±5% tolerance product. The marking is 3 digits, the first 2 digits are the significant figures of the resistance and the 3rd digit denotes
number of zeros following:
153
6R8
• ±1% tolerance of 0805,1206 sizes. The marking is 4 digits, the first 3 digits are the significant figures of the Resistance and the 4th digit
denotes number of zeros following:
2372
3R24
• Standard E-96 series values (±1% tolerance) of 0603 size. Due to the small size of the resistor’s body, 3 digits marking will be used to
indicate the accurate resistance value by using the following Multiplier & Resistance Code.
Multiplier Code (for 0603 1% marking)
Code
Multiplier
A
10
0
B
10
1
C
10
2
D
10
3
E
10
4
F
10
5
G
10
6
H
10
7
X
10
-1
Y
10
-2
Z
10
-3
Standard E-96 Series Resistance Value Code (for 0603 1% marking)
Value
100
102
105
107
110
113
115
118
121
124
127
130
133
137
140
143
Code
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
Value
147
150
154
158
162
165
169
174
178
182
187
191
196
200
205
210
Code
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Value
215
221
226
232
237
243
249
255
261
267
274
280
287
294
301
309
Code
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
Value
316
324
332
340
348
357
365
374
383
392
402
412
422
432
442
453
Code
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
Value
464
475
487
499
511
523
536
549
562
576
590
604
619
634
649
665
Code
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
Value
681
698
715
732
750
768
878
806
825
845
866
887
909
931
953
976
Code
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
So the resistance value are marked as the following examples:
1
-1
29B
10X
= 10X
• Standard E-24 and not belong to E-96 series values (in ±1% tolerance) of 0603 size. The marking is the same as 5% tolerance but marking
as underline.
122
680
3
UniOhm
Performance Specifications
Temperature coefficient
Short-time overload
Insulation resistance
Dielectric withstanding voltage
Terminal bending
Soldering heat
Solderability
Temperature cycling
Humidity (Steady State)
Load life in humidity
Load life
Thick Film Chip Resistors
No evidence of flashover, mechanical damage, arcing or insulation breakdown.
Min. 95% coverage.
• The values which are not of standard E-24 series (2% & 5%) and not of E-96 series (1%) could be offered on a case to case basis.
1 2 0 6 S 4 J 0 1 2 J T 5 E
Product Type:
Fill-in 4 digits with the Chip resistor type
as follow:
0402, 0603, 0805, 1206, 1210,
2010, 2512, 2D02, 4D02, 4D03,
16P8, 10P8, 10S8, 10T8, 10E9.
Wattage:
Fill-in 2 digits
with the codes as
follow:
Normal size:
WG=1/16W,
WA=1/10W,
W8=1/8W,
WH=1/32W
Small size:
SA=1/10W-S,
S8=1/8W-S,
S4=1/4W-S,
S3=1/3W-S,
07=3/4W-S
Resistance Value:
E-24 series:
the 1
st
digit is “0”, the 2
nd
& 3
rd
digits
are for the significant figures of the resis-
tance and the 4
th
indicate the numbers of
E-96 series:
the 1
st
to 3
rd
digits are for the significant
figures of the resistance and the 4
th
digit
indicate the numbers of zeros following
Packing Type:
T = T/R packing
B = Bulk in Poly-bag
C = Bulk in cassette
Packing Quantity:
1=1,000pcs
2=2,000pcs
3=3,000pcs
4=4,000pcs,
5=5,000pcs
C=10,000pcs
D=20,000pcs
Tolerance:
F = ±1%
G = ±2%
J = ±5%
Special Feature:
E = Lead Free Plating type.
4
Test/Measurement
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