First three digits are significant, fourth digit represents number of zeroes to follow (example: 8252 = 82.5K ohms)
Packaging
G = Paper tape (10K pcs.) on 7 ” plastic reel (CRT0402-AS)
E = Paper tape (5K pcs.) on 7 ” plastic reel (CRT0603-AS, CRT0805-AS, CRT1206-AS)
Special Design and Termination
AS = Sulfur-resistant version, Tin-plated (RoHS compliant)
* RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011.
**Bourns
®
products have not been specifically designed and tested for FDA Class III applications (or equivalent foreign applications) and their use in such applications is neither
recommended nor supported.
Specifications are subject to change without notice.
The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time.
Users should verify actual device performance in their specific applications.
CRT-AS Series -
Sulfur-Resistant Thin Film Precision Chip Resistors
Value - TCR Table
Model
(PPM/°C)
±10
±15
±25
±50
±10
±15
±25
±50
±10
±15
±25
±50
±10
±15
±25
±50
TCR
(Code)
(W)
(X)
(Y)
(Z)
(W)
(X)
(Y)
(Z)
(W)
(X)
(Y)
(Z)
(W)
(X)
(Y)
(Z)
±0.05 %
(A)
49.9 to 10K Ω
Resistance Tolerance (Code)
±0.1 %
±0.25 %
±0.5 %
(B)
(C)
(D)
49.9 to 10K Ω
49.9 to 69.8K Ω
10 to 100K Ω
10 to 332K Ω
10 to 511K Ω
10 to 100K Ω
10 to 1M Ω
±1 %
(F)
CRT0402-AS
CRT0603-AS
49.9 to 10K Ω
CRT0805-AS
CRT1206-AS
10 to 200K Ω
10 to 1M Ω
Typical Part Marking
CRT0402-AS
No marking.
CRT0603-AS
3-Digit Marking
E-96
Code
E96
Code
E96
Code
E96
Code
E96
52C
Examples:
• 52C = 34K
Ω,
• 11C = 12.7K
Ω
102
2401
Multiplier
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
A
10
0
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
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
D
10
3
178
182
187
191
196
200
205
210
215
221
226
232
237
243
249
255
261
267
274
280
287
294
301
309
E
10
4
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
10
F
5
G
10
6
316
324
332
340
348
357
365
374
383
392
402
412
422
432
442
453
464
475
487
499
511
523
536
549
H
10
7
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
10
X
-1
Y
10
-2
562
576
590
604
619
634
649
665
681
698
715
732
750
768
787
806
825
845
866
887
909
931
953
976
Z
10
-3
Specifications are subject to change without notice.
The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time.
Users should verify actual device performance in their specific applications.
CRT-AS Series -
Sulfur-Resistant Thin Film Precision Chip Resistors
52C
Typical Part Marking (Continued)
CRT0603-AS
3-Digit Marking
E-24
102
52C
2401
Code
First two digits are significant;
third digit represents number of
zeroes to follow.
Examples:
• 102 = 1K
Ω,
• 181 = 180
Ω
10
11
12
13
15
16
18
20
22
24
27
30
33
36
39
43
47
51
56
62
68
75
82
91
102
CRT0805-AS
CRT1206-AS
4-Digit Marking
2401
Resistance
200
Ω
2.4K
Ω
5.36K
Ω
Examples
Marking
2000
2401
5361
First three digits are significant;
fourth digit represents number of
zeroes to follow.
Soldering Profile
275
<1>
Maximum of 20 seconds between
+255 °C and +260 °C
Derating Curve
260 °C peak
<1>
255 °C
Rated power in percentage (%)
225
220 °C
Temperature (°C)
190 °C
175
150 °C
60 - 90
seconds
Ramp Down
6 °C/second
60 - 120 seconds
10 seconds minimum
75
Ramp Up
3 °C/second maximum
25
100
80
60
40
20
0
-55
0
70
155
125
0
50
100
150
Time (seconds)
200
250
300
(°C) Ambient temperature
Specifications are subject to change without notice.
The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time.
Users should verify actual device performance in their specific applications.
CRT-AS Series -
Sulfur-Resistant Thin Film Precision Chip Resistors
Chip Dimensions
Dimension
Model
CRT0402-AS
1.00 ± 0.10
(0.040 ± 0.004)
0.50 ± 0.05
(0.020 ± 0.002)
0.30 ± 0.05
(0.012 ± 0.002)
0.20 ± 0.10
(0.008 ± 0.004)
0.20 ± 0.10
(0.008 ± 0.004)
Model
CRT0603-AS
1.55 ± 0.10
(0.061 ± 0.004)
0.80 ± 0.10
(0.031 ± 0.004)
0.45 ± 0.15
(0.018 ± 0.006)
0.30 ± 0.20
(0.012 ± 0.008)
0.30 ± 0.20
(0.012 ± 0.008)
Model
CRT0805-AS
2.00 ± 0.15
(0.079 ± 0.006)
1.25 ± 0.15
(0.049 ± 0.006)
0.55 ± 0.10
(0.022 ± 0.004)
0.30 ± 0.20
(0.012 ± 0.008)
0.40 ± 0.25
(0.016 ± 0.010)
Model
CRT1206-AS
3.05 ± 0.15
(0.120 ± 0.006)
1.55 ± 0.15
(0.061 ± 0.006)
0.55 ± 0.10
(0.022 ± 0.004)
0.42 ± 0.20
(0.017 ± 0.008)
0.35 ± 0.25
(0.014 ± 0.010)
I
2
L
I
2
W
H
Dimensional Drawings
I1
I1
L
W
H
I1
I2
DIMENSIONS:
MM
(INCHES)
Recommended Land Pattern
Dimension
A
B
C
Model
CRT0402-AS
0.50
(0.020)
0.50
(0.020)
0.60 ± 0.20
(0.024 ± 0.008)
Model
CRT0603-AS
0.80
(0.031)
1.00
(0.039)
0.90 ± 0.20
(0.035 ± 0.008)
Model
CRT0805-AS
1.00
(0.039)
1.00
(0.039)
1.35 ± 0.20
(0.053 ± 0.008)
Model
CRT1206-AS
2.00
(0.079)
1.15
(0.045)
1.70 ± 0.20
(0.067 ± 0.008)
C
B
A
Packaging Dimensions - Tape
Dimension
A
B
Model
CRT0402-AS
1.16 ± 0.05
(0.046 ± 0.002)
0.70 ± 0.05
(0.028 ± 0.002)
2.00 ± 0.05
(0.079 ± 0.002)
Model
CRT0603-AS
1.90 ± 0.05
(0.075 ±0.002)
1.10 ± 0.05
(0.043 ± 0.002)
4.00 ± 0.10
(0.157 ± 0.004)
Model
CRT0805-AS
2.37 ± 0.05
(0.094 ± 0.002)
1.60 ± 0.05
(0.063 ± 0.002)
4.00 ± 0.10
(0.157 ± 0.004)
11.5 ± 1.0
(.453 ± .039)
Model
CRT1206-AS
3.55 ± 0.05
(0.140 ± 0.002)
2.00 ± 0.05
(0.079 ± 0.002)
4.00 ± 0.10
(0.157 ± 0.004)
C
C
B
A
3.5 ± 0.05
(.138 ± .002)
8.0 ± 0.2
(.315 ± .008)
13.5 ± 0.7
(.531 ± .028)
2.0
(.080)
2.0 ± 0.05
(.079 ± .002)
4.0 ± 0.1
(.157 ± .004)
1.55 ± 0.05
(.061 ± .002)
1.75 ± 0.1
(.059 ± .004)
60.0 ± 0.5
(2.36 ± .020)
DIMENSIONS:
MM
(INCHES)
20.5
(.807)
178.0 ± 2.0
(7.008 ± .080)
REV. 11/16
Specifications are subject to change without notice.
The device characteristics and parameters in this data sheet can and do vary in different
applications and actual device performance may vary over time.
Users should verify actual device performance in their specific applications.
随着人脸识别应用越来越广泛，用它来做智能锁也是再适合不过。 硬件连接 在这个项目中，我们计划拍照并识别其中的人脸，然后在屏幕上显示识别结果。如果是已认证面孔，打开门，并通过短信将开门的人发送到指定的电话号码。 因此，您需要将摄像头连接到 Raspberry Pi 的摄像头接口，并将天线和 Grove - Relay 安装到 LTE Pi HAT，然后将 HAT 插入您的 Pi。屏幕可...[详细]
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