Thin Film Anti-Sulfurated Chip Resistor
AS73 Series
MERITEK
Feature and Applications
Special passivation for moisture sensitive applications
Special materials, design, and processing for high sulfur applications
Tolerances as low as 0.05% and TCR’s as low as 10 ppm.
Test proven immunity to humidity, moisture, and sulfur
RoHS Compliant / Lead Free
Precision automotive and industrial motor controls, pump controls, dispensing systems
Welding equipment
Audio / video amplifiers
Notebook and laptop motherboard
Handheld instruments such as printers, scanners, and test instruments
Base station and remote telecom applications
Medical test and monitoring equipment.
P
ART
N
UMBERING
S
YSTEM
AS73
Thin Film Anti-sulfurated Precision Resistors
TCR (PPM/°C)
C
D
F
±10
±15
±25
Size
Code
1J
Size
0603
Packaging Code
Code
T
Packaging
Tape and Reel
Resistance Value
24R9
24.9Ω
Resistance Tolerance
Code
A
Value
±0.05%
B
±0.1%
G
±50
2A
0805
B
Bulk
F
2A
T
1001
F
Recommend Land Pattern
C
B
Type
1J (0603)
2A(0805)
A
Unit: mm
A
0.80
1.00
B
1.00
1.00
C
0.90±0.2
1.35±0.2
1001
1KΩ
C
±0.25%
D
±0.5%
5003
500KΩ
F
±1%
Construction
L
D1
W
T
D2
Alumina Substrate
BottomElectrode (NiCr)
Top Electrode (Cu)
Edge Electrode (NiCr)
Resistor Layer (NiCr)
Barrier Layer (Ni)
Overcoat (Epoxy)
External Electrode (Sn)
Marking
Dimensions
Unit: mm
Type
1J
2A
Size
(Inch)
0603
0805
L
1.55±0.10
2.00±0.15
W
0.80±0.10
1.25±0.15
T
0.45±0.10
0.55±0.10
D1
0.30±0.20
0.30±0.20
D2
0.30±0.20
0.40±0.25
Weight
(g)
(1000pcs)
1.83
4.71
Rev. 7
Thin Film Anti-Sulfurated Chip Resistor
AS73 Series
MERITEK
Derating Curve
100
Power ratio(%)
80
60
40
20
0
0
20
40
60
80
100
120
140
160
180
Ambient Temperature(℃
)
Standard Electrical Specifications
Item
Resistance Range
±0.1%
±0.25%
±0.5%
±1%
Power
Rating
at 70°C
Operating
Temp.
Range
-55 ~
+155°C
-55 ~
+155°C
Max.
Operating
Voltage
Max.
Overload
Voltage
TCR
(PPM/°C)
Type
1J (0603)
2A (0805)
1/16W
1/10W
50V
100V
100V
200V
24.9Ω – 332K
24.9Ω – 500KΩ
±25
±50
±25
±50
Operating Voltage=√(P*R) or Max. operating voltage listed above, whichever is lower.
Overload Voltage=2.5*√(P*R) or Max. overload voltage listed above, whichever is lower.
Special Electrical Specifications
Item
Resistance Range
±0.05%
24.9Ω – 12KΩ
–
–
12.1KΩ – 332KΩ
24.9Ω – 15KΩ
15.1KΩ – 500KΩ
±0.1%
Power
Rating
at 70°C
Operating
Temp.
Range
-55 ~
+155°C
-55 ~
+155°C
Max.
Max.
Operating Overload
Voltage
Voltage
TCR
(PPM/°C)
Type
1J (0603)
2A (0805)
1/16W
1/10W
50V
100V
100V
200V
±10
±15
±10
±15
Operating Voltage=√(P*R) or Max. operating voltage listed above, whichever is lower.
Overload Voltage=2.5*√(P*R) or Max. overload voltage listed above, whichever is lower.
Rev. 7
Thin Film Anti-Sulfurated Chip Resistor
AS73 Series
MERITEK
Environmental Characteristics
Requirement
Tol.
≦
0.05%
Temperature Coefficient of Resistance
As Spec.
(T.C.R.)
Short Time Overload
Insulation Resistance
∆R±0.05%
∆R±0.2%
Item
Test Method
MIL-STD-202F Method 304
+25/-55/+25/+125/+25C
JIS-C-5201-1 5.5
RCWV*2.5 or Max. overload voltage for 5 seconds
MIL-STD-202F Method 302
Apply 100V
DC
for 1 minute
Tol. > 0.05%
∆R±0.2%
for high power rating
>1000 MΩ
∆R±0.05%
∆R±0.2%
Endurance
>7kΩ
∆R±0.5%
∆R±0.5%
for high power rating
MIL-STD-202F Method 108A
702C, Max. working voltage for 1000 hrs with 1.5 hrs
“ON” and 0.5 hrs “OFF”
MIL-STD-202F Method 103B
402C, 90~95% R.H. Max. working voltage for 1000
hrs with 1.5 hrs “ON” and 0.5 hrs “OFF”
JIS-C-5201-1 6.1.4
Bending amplitude 3 mm for 10 seconds
MIL-STD-202F Method 208H
2455C for 3 seconds
Damp Heat with Load
Bending Strength
Solderability
Resistance to Soldering Heat
Dielectric Withstand Voltage
Thermal Shock
Low Temperature Operation
∆R±0.05%
∆R±0.3%
∆R±0.5%
for high power rating
∆R±0.05%
95% min. coverage
∆R±0.05%
By Type
∆R±0.05%
∆R±0.05%
∆R±0.25%
∆R±0.2%
∆R±0.2%
∆R±0.2%
MIL-STD-202F Method 210E
260±5C for 10 seconds
MIL-STD-202F Method 301
Max. overload voltage for 1 minute
MIL-STD-202F Method 107G
-55C ~150C, 100 cycles
JIS-C-5201-1 7.1
1 hour, -65C, followed by 45 minutes of RCWV
ASTM-B-809-95
∆R±0.5%
for high power rating
0.5%
Sulfur Test
3~5ppm H2S, 502C, 91~93% R.H., no power
rating for 1000 hrs
Storage Temperature: 25±3C; Humidity < 80%RH
Reflow
Rev. 7
Thin Film Anti-Sulfurated Chip Resistor
AS73 Series
MERITEK
Marking
0603 3digit marking
3digit marking for Example: 14C=13K7Ω 13C=13K3Ω
68B=4K99Ω 68X=49.9Ω
Marking Label
Code
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
Code
Multiplier
A
10
0
14C
Code
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
E
F
4
E96
100
102
105
107
110
113
115
118
121
124
127
130
133
137
140
143
147
150
154
158
162
165
169
174
B
10
1
Code
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
C
10
2
E96
178
182
187
191
196
200
205
210
215
221
226
232
237
243
249
255
261
267
274
280
287
294
301
309
D
10
3
E96
316
324
332
340
348
357
365
374
383
392
402
412
422
432
442
453
464
475
487
499
511
523
536
549
G
H
10
7
Code
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
X
10
-1
E96
562
576
590
604
619
634
649
665
681
698
715
732
750
768
787
806
825
845
866
887
909
931
953
976
Y
10
-2
Z
10
-3
10
10
5
10
6
0603 3digit marking for E24
E24
10
11
12
13
15
Example: 101=100Ω
16
18
20
22
24
102=1KΩ
27
30
33
36
39
43
47
51
56
62
68
75
82
91
0805 4digit marking
Example
Resistance
marking
100Ω
1000
2.2KΩ
2201
10KΩ
1002
49.9KΩ
4992
100KΩ
1003
Rev. 7
Thin Film Anti-Sulfurated Chip Resistor
AS73 Series
MERITEK
Packaging
Unit : mm
Type
ØA
ØB
ØC
W
9.5±1.0
9.5±1.0
T
11.5±1.0
11.5±1.0
Paper
Tape (EA)
1J (0603) 178.0±1.0 60.0+1.0 13.5±0.7
2A(0805) 178.0±1.0 60.0+1.0 13.5±0.7
5,000
5,000
Emboss
Plastic
Tape (EA)
-
-
Paper Tape Specifications
B ottom T ape
T op T a p e
ψ
D
0
A
B
E
F
W
T
P aper T ape
R e sistor
P
1
P
2
P
0
direction of unreeling
Unit: mm
Type
A
B
W
E
F
P
0
P
1
P
2
ΦD
0
T
1J (0603) 1.10±0.05 1.90±0.05 8.00±0.10 1.75±0.05 3.5±0.05 4.00±0.10 4.00±0.10 2.00±0.05 1.55±0.05 0.60±0.03
2A(0805) 1.60±0.05 2.37±0.05 8.00±0.10 1.75±0.05 3.5±0.05 4.00±0.10 4.00±0.10 2.00±0.05 1.55±0.05 0.75±0.05
Peel force of top cover tape
The peel speed shall be about 300mm/min±5%
The peel force of top cover tape shall be between 8g to 40g
Top Cover Tape
8~40g
165~180
Rev. 7
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