PRA 100, 135, 182 (CNW)
Vishay Sfernice
High Precision Resistor Chip Arrays
FEATURES
• High stability passivated nichrome resistive
layer 0.02 % on ratio, 1000 h at Pn at + 70 °C
• Tight TCR (10 ppm/°C) and TCR tracking
(to 1 ppm/°C)
• Very low noise < 35 dB and voltage coefficient
< 0.01 ppm/V
• Ratio tolerance to 0.01 % (R ≥ 200R)
• Pre-tinned terminations over nickel barrier
• High temperature option (200 °C)
• SMD wraparound chip resistor array
• Compliant to RoHS directive 2002/95/EC
PRA arrays can be used in most applications requiring a
matched pair (or set) of resistor elements. The networks
provide 1 ppm/°C TCR tracking, a ratio tolerance as tight as
0.01 % and outstanding stability. They are available in 1 mm,
1.35 mm and 1.82 mm pitch.
TYPICAL PERFORMANCE
ABS
10 ppm/°C
ABS
TRACKING
TCR
TOL
2 ppm/°C
RATIO
0.1 %
0.05 %
DIMENSIONS
Suggested Land Pattern
I: Independent resistors
Electrical diagram
R
R1
R2
R7
R8
Termination
E
S
R
Q
A
P
F
PRA 100
PRA 135
PRA 182
D
B
G
Number of resistors:
2 to 8
R1 = R2 = ... R8
DIM.
F
C
mm
mil
mm
mil
72
mm
mil
+ 0.2
- 0.1
+ 0.2
- 0.1
+ 0.2
- 0.1
A
B
C
1.6
63 1.85
3.0
118
+ 0.2
- 0.2
+ 0.2
- 0.2
+ 0.2
- 0.2
0.4
16
0.4
16
0.4
1.3
16
+ 0.15
- 0.15
+ 0.15
- 0.15
+ 0.35
- 0.15
0.65
25.5 1.05
10
E = (N x F) 0.2 mm
41
10
51
10
D
0.25
0.25
0.25
E (1)
F
E = (N x F) 8 mil
53.1 1.82 72
C: One common point N resistors
R1
R2
R7
R8
1
40
15
1.35
E
+ 0.1
- 0
+ 0.1
- 0
+ 0.1
- 0
G
0.4
0.4
15
0.4
15
P
Q
R
S
0.7
0.3
1
27.5
12
1.05
41.3
12
1.52
59.8
12
A
0.3
1
0.3
1
40
40
40
D
B
Number of resistors:
2 to 8
G
0.6
23.5
0.8
31.5
1.8
70.8
F
C
Note
(1) E depends on number of resistors
R1 = R2 = ... R8
* Pb containing terminations are not RoHS compliant, exemptions may apply
** Please see document “Vishay Material Category Policy”: www.vishay.com/doc?99902
www.vishay.com
66
For technical questions, contact: sfer@vishay.com
Document Number: 53033
Revision: 17-Aug-09