AS73 Series

 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.
PART NUMBERING SYSTEM
Recommend Land Pattern
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
F
2A
1001
F
C
G
±50
2A
0805
B
B
Bulk
1001
1KΩ
Resistance Tolerance
Code
A
Value
±0.05%
T
B
±0.1%
Type
1J (0603)
2A(0805)
5003
500KΩ
C
±0.25%
D
±0.5%
A Unit: mm
A
0.80
1.00
B
1.00
1.00
C
0.90±0.2
1.35±0.2
F
±1%
Construction
L
D1
W
 Alumina Substrate
 BottomElectrode (NiCr)
 Top Electrode (Cu)




T
D2
 
 Edge Electrode (NiCr)  Resistor Layer (NiCr)
 Barrier Layer (Ni)
 Overcoat (Epoxy)
External
Electrode
(Sn)

 Marking

Dimensions
Unit: mm
Type
Size
(Inch)
L
W
T
D1
D2
1J
2A
0603
0805
1.55±0.10
2.00±0.15
0.80±0.10
1.25±0.15
0.45±0.10
0.55±0.10
0.30±0.20
0.30±0.20
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
Power ratio(%)
100
80
60
40
20
0
0
20
40
60
80
100
120
140
160
180
Ambient Temperature(℃)
Standard Electrical Specifications
Item
Resistance Range
Power
Rating
at 70°C
Operating
Temp.
Range
Max.
Operating
Voltage
Max.
Overload
Voltage
1J (0603)
1/16W
-55 ~
+155°C
50V
100V
24.9Ω – 332K
±25
±50
2A (0805)
1/10W
-55 ~
+155°C
100V
200V
24.9Ω – 500KΩ
±25
±50
Type
±0.1%
±0.25%
±0.5%
±1%
TCR
(PPM/°C)
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
Power
Rating
at 70°C
Operating
Temp.
Range
1/16W
-55 ~
+155°C
Max.
Max.
Operating Overload
Voltage
Voltage
Type
1J (0603)
2A (0805)
1/10W
-55 ~
+155°C
50V
100V
100V
200V
Resistance Range
±0.05%
±0.1%
24.9Ω – 12KΩ
–
12.1KΩ – 332KΩ
24.9Ω – 15KΩ
–
15.1KΩ – 500KΩ
TCR
(PPM/°C)
±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
Item
Tol. ≦ 0.05%
MIL-STD-202F Method 304
+25/-55/+25/+125/+25C
Temperature Coefficient of Resistance
As Spec.
(T.C.R.)
Short Time Overload
Insulation Resistance
∆R±0.05%
Endurance
∆R±0.2%
∆R±0.2% for high power rating
∆R±0.2%
>7kΩ ∆R±0.5%
∆R±0.5% for high power rating
Damp Heat with Load
∆R±0.05%
∆R±0.3%
∆R±0.5% for high power rating
Bending Strength
∆R±0.05%
Solderability
95% min. coverage
Resistance to Soldering Heat
∆R±0.05%
Dielectric Withstand Voltage
By Type
Thermal Shock
∆R±0.05%
∆R±0.25%
∆R±0.05%
∆R±0.2%
Low Temperature Operation
JIS-C-5201-1 5.5
RCWV*2.5 or Max. overload voltage for 5 seconds
MIL-STD-202F Method 302
Apply 100VDC for 1 minute
>1000 MΩ
∆R±0.05%
Test Method
Tol. > 0.05%
∆R±0.2%
MIL-STD-202F Method 108A
702C, Max. working voltage for 1000 hrs with 1.5 hrs
“ON” and 0.5 hrs “OFF”
MIL-STD-202F Method 103B
402C, 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
2455C for 3 seconds
∆R±0.2%
MIL-STD-202F Method 210E
260±5C for 10 seconds
MIL-STD-202F Method 301
Max. overload voltage for 1 minute
∆R±0.5% for high power rating
MIL-STD-202F Method 107G
-55C ~150C, 100 cycles
JIS-C-5201-1 7.1
1 hour, -65C, followed by 45 minutes of RCWV
ASTM-B-809-95
Sulfur Test
 0.5%
3~5ppm H2S, 502C, 91~93% R.H., no power
rating for 1000 hrs
Storage Temperature: 25±3C; 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
14C
Marking Label
Code
E96
Code
E96
Code
E96
Code
E96
01
100
25
178
49
316
73
562
02
102
26
182
50
324
74
576
03
105
27
187
51
332
75
590
04
107
28
191
52
340
76
604
05
110
29
196
53
348
77
619
06
113
30
200
54
357
78
634
07
115
31
205
55
365
79
649
08
118
32
210
56
374
80
665
09
121
33
215
57
383
81
681
10
124
34
221
58
392
82
698
11
127
35
226
59
402
83
715
12
130
36
232
60
412
84
732
13
133
37
237
61
422
85
750
14
137
38
243
62
432
86
768
15
140
39
249
63
442
87
787
16
143
40
255
64
453
88
806
17
147
41
261
65
464
89
825
18
150
42
267
66
475
90
845
19
154
43
274
67
487
91
866
20
158
44
280
68
499
92
887
21
162
45
287
69
511
93
909
22
165
46
294
70
523
94
931
23
169
47
301
71
536
95
953
24
174
Code
A
Multiplier
10
48
B
0
10
1
10
0603 3digit marking for E24
E24
10
11
12
0805 4digit marking
13
309
C
D
2
10
16
18
20
Example
Resistance
marking
3
10
Example: 101=100Ω
15
72
E
22
24
549
F
4
10
G
5
10
96
H
6
10
976
X
7
10
Y
-1
10
Z
-2
10
-3
102=1KΩ
27
30
33
36
39
43
47
51
56
62
68
100Ω
2.2KΩ
10KΩ
49.9KΩ
100KΩ
1000
2201
1002
4992
1003
75
82
91
Rev. 7
Thin Film Anti-Sulfurated Chip Resistor
AS73 Series
MERITEK
Packaging
Unit : mm
Type
ØA
ØB
ØC
W
Paper
T
Tape (EA)
Emboss
Plastic
Tape (EA)
1J (0603) 178.0±1.0 60.0+1.0 13.5±0.7
9.5±1.0
11.5±1.0
5,000
-
2A(0805) 178.0±1.0 60.0+1.0 13.5±0.7
9.5±1.0
11.5±1.0
5,000
-
Paper Tape Specifications
T op T a p e
B ottom T ape
ψ D0
E
A
F
B
T
P1
R e sistor
P aper T ape
P2
P0
W
direction of unreeling
Unit: mm
Type
A
B
W
E
F
P0
P1
P2
ΦD0
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