Space Applications Only
PRA HR (CNW HR)
www.vishay.com
Vishay Sfernice
ESCC 4001/025 ( ) Qualified High Precision
Thin Film Chip Resistor Arrays
FEATURES
• Thin film technology
• 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 (3 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
• ESA/ESCC qualified
• ESCC 4001 (generic specification)
• ESCC 4001/025 (detailed specification)
• SMD wraparound chip resistor array
• Up to eight different ohmic values (CNW HR)
• Suitable for military use
• Material categorization: for definitions of compliance
please see
www.vishay.com/doc?99912
LINKS TO ADDITIONAL RESOURCES
D
D
3
3
3D Models
Vishay Sfernice Thin Film division holds ESCC QML
qualification (ESCC technology flow qualification). PRA
Hi-Rel arrays can be used in most applications requiring a
matched pair (or set) of resistor elements. The networks
provide 3 ppm/°C TCR tracking, a ratio tolerance as tight as
0.05 % and outstanding stability. They are available in
1 mm, 1.35 mm, and 1.82 mm pitch.
TYPICAL PERFORMANCE
ABSOLUTE
TCR
TOL.
10 ppm/°C
ABSOLUTE
0.1 %
TRACKING
3 ppm/°C
RATIO
0.05 %
DIMENSIONS
Land Pattern
R
S
R
P
Q
F
TC tracking: 3 ppm/°C if all resistors of the array are:
Rn > 250
Ω
TC tracking: 5 ppm/°C if one or more resistors of the array
is in the range: 100
Ω
to 250
Ω
included
I: Independent resistors
E
Termination
Electrical diagram
R1
R2
R7
R8
DIM.
A
B
C
D
E
F
G
P
Q
R
S
(1)
PRA HR 100
mm
1.6
+ 0.2
- 0.1
PRA HR 135
mm
1.85
+ 0.2
- 0.1
PRA HR 182
mm
3.0
+ 0.2
- 0.1
A
mil
63
13
25.5
10
40
mil
72
13
41
10
53.1
15
41.3
12
40
31.5
mil
118
13
51
10
72
15
59.8
12
40
70.8
B
C
D
A
B
C
D
F
0.34 ± 0.17
0.65
+ 0.15
- 0.15
0.34 ± 0.17
1.05
+ 0.15
- 0.15
0.34 ± 0.17
1.3
+ 0.35
- 0.15
G
Number of resistors:
2 to 8
R1 = R2 = ... R8
0.25
1
0.38
+ 0.2
-0
0.25
1.35
0.38
+ 0.2
-0
0.25
1.82
0.38
+ 0.2
-0
E = (N x F) ± 0.2 mm
E = (N x F) ± 8 mil
C: One common point N resistors
R1
E
15
27.5
12
40
23.5
R2
R7
R8
0.7
0.3
1
0.6
1.05
0.3
1
0.8
1.52
0.3
1
1.8
Note
(1)
E depends on number of resistors
F
G
Number of resistors:
2 to 8
R1 = R2 = ... R8
Revision: 29-Mar-2021
Document Number: 53043
1
For technical questions, contact:
sferthinfilm@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT
www.vishay.com/doc?91000
Space Applications Only
PRA HR (CNW HR)
www.vishay.com
Vishay Sfernice
GLOBAL PART NUMBER INFORMATION
New Global Part Numbering: PRAHR100I4-10K2BWBT
P
GLOBAL
MODEL
R
A
H
R
1
0
0
I
4
-
1
0
K
2
B
W
B
T
CONFIGURATION
I:
Independent
NUMBERS OF
RESISTORS
2
to
8
OHMIC VALUE
IN CLEAR
(1)
Decimal
R, K or M
ABS. TOL.
B
= 0.1 %
D
= 0.5 %
F
=1%
RATIO TOL.
W
= 0.05 %
B
= 0.1 %
TERMINATION
SnPb over
nickel barrier
PACKAGING
For more
information see
“Codification
of packaging”
table
PRA HR 100
PRA HR 135
PRA HR 182
For different ohmic values on a given network a specific number is used
CNW HR
1368
CUSTOM NETWORK
REFERENCE
T
For more information see
“Codification of packaging” table
GLOBAL MODEL
Notes
• Part number is limited to 18 digits, so packing must be omitted and mentioned in comment on order. Otherwise ESCC code should be used
for ordering
(1)
When the last digit(s) of the ohmic value is (are) 0, it (they) must be omitted.
E.g.:PRAHR100I4-2K20BWN
→
must be ordered under PRAHR100I4-2K2BWN
PRAHR100I4-2K00BWN
→
must be ordered under PRAHR100I4-2KBWN
ESCC CODE
4
DETAILED SPEC.
NUMBER
0
0
VARIANT
NUMBER
01
to
21
1
0
2
5
0
1
1
0
0
1
B
W
1
ABSOLUTE
TCR
1
= 10 ppm/°C
RESISTANCE
VALUE
The first three digits are significant
figures and the last digit specifies
the number of zeros to follow.
Example:
3901
= 3900
Ω
1004
= 1 MΩ
ABSOLUTE
TOLERANCE
B
= 0.1 %
D
= 0.5 %
F
=1%
RATIO
TOLERANCE
W
= 0.05 %
B
= 0.1 %
4
DETAILED SPEC.
NUMBER
0
0
VARIANT
NUMBER
22
to
42
1
0
2
5
2
2
1
2
2
9
B
W
1
ABSOLUTE
TCR
1
= 10 ppm/°C
CUSTOM NETWORK REFERENCE
Four digits number defined per
Vishay Sfernice
ABSOLUTE
TOLERANCE
B
= 0.1 %
D
= 0.5 %
F
=1%
RATIO
TOLERANCE
W
= 0.05 %
B
= 0.1 %
CODIFICATION OF PACKAGING
CODE 18
WAFFLE PACK
W
PLASTIC TAPE (Standard for all sizes.)
T
TA
TB
TC
TD
TE
TF
PACKAGING
25 min., 1 mult.
50 min., 1 mult.
100 min., 100 mult.
250 min., 250 mult.
500 min., 500 mult.
1000 min., 1000 mult.
2500 min., 2500 mult.
Full tape (quantity depending on size of chips)
Revision: 29-Mar-2021
Document Number: 53043
2
For technical questions, contact:
sferthinfilm@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT
www.vishay.com/doc?91000
Space Applications Only
PRA HR (CNW HR)
www.vishay.com
Vishay Sfernice
EXAMPLES OF CROSS REFERENCE BETWEEN ESA PART NUMBER AND VISHAY PART NUMBER
ESA
PART NUMBER
4001025011001BW1
VISHAY
PART NUMBER
4001025 =
PRAHR100I2-1K00BWB PRAHR or
CNWHR
CNWHR1229
01 = 100I2 with
2 identical values
and B termination
EXPLANATIONS
1001 = 1K00
1229 = Vishay
custom
reference
number
BW = BW
BW =
Tolerances
mentioned in
custom file
1 = TCR 10 ppm
abs: not mentioned
in Vishay P/N
1 = TCR 10 ppm
abs: not mentioned
in Vishay P/N
4001025221229BW1
4001025 = 22 = 100I2 with 2
PRAHR or different values, B
CNWHR
terminations
CROSS REFERENCE ESA PART NUMBER AND PRAHR PART NUMBER
VARIANT
ESA
01
02
03
04
05
06
07
08
09
10
11
12
13
14
VISHAY MODELS
PRAHR100I2 same value
PRAHR100I3 same value
PRAHR100I4 same value
PRAHR100I5 same value
PRAHR100I6 same value
PRAHR100I7 same value
PRAHR100I8 same value
PRAHR135I2 same value
PRAHR135I3 same value
PRAHR135I4 same value
PRAHR135I5 same value
PRAHR135I6 same value
PRAHR135I7 same value
PRAHR135I8 same value
VARIANT
ESA
15
16
17
18
19
20
21
22
23
24
25
26
27
28
VISHAY MODELS
PRAHR182I2 same value
PRAHR182I3 same value
PRAHR182I4 same value
PRAHR182I5 same value
PRAHR182I6 same value
PRAHR182I7 same value
PRAHR182I8 same value
PRAHR100I2 different value
PRAHR100I3 different value
PRAHR100I4 different value
PRAHR100I5 different value
PRAHR100I6 different value
PRAHR100I7 different value
PRAHR100I8 different value
VARIANT
ESA
29
30
31
32
33
34
35
36
37
38
39
40
41
42
VISHAY MODELS
PRAHR135I2 different value
PRAHR135I3 different value
PRAHR135I4 different value
PRAHR135I5 different value
PRAHR135I6 different value
PRAHR135I7 different value
PRAHR135I8 different value
PRAHR182I2 different value
PRAHR182I3 different value
PRAHR182I4 different value
PRAHR182I5 different value
PRAHR182I6 different value
PRAHR182I7 different value
PRAHR182I8 different value
TRACEABILITY DEFINITIONS
The two major traceability elements are defined as:
• The primary process lot number named Front End lot (FE lot). One “FE lot” is composed of several wafers issued from the
same thin film deposition sequence.
• The date code named Batch Number (BN). The “BN” is defined after completion of the end of production testing sequence.
The lot homogeneity is given by the “FE lot” and not by the “BN”.
According to the applied rules validated by the ESCC through the product qualification, the following situations are agreed:
• Parts coming from different “FE lost” might have the same “BN”.
• A maximum of two different “BN” might be applied to the same “FE lot” to enable the use of overruns from a previous PO.
• Unless requested / approved by the customer the “BN” will be 2 years old maximum.
SPECIFIC TRACEABILITY REQUIREMENTS
The following specific requirements have to be treated as:
• A customer who requires “Lot Homogeneity” has to mention it on the PO as “SINGLE PRODUCTION LOT”.
• A customer who requires “Lot Homogeneity” in addition to a “Single Batch Number” has to mention it on the PO as “SINGLE
PRODUCTION LOT AND OPTION R0101”.
END OF PRODUCTION TESTING
Mandatory testing performed at the end of the production process:
• 100 % overload: voltage
(
6.25
P
n
x
R
n
)
or 2 UL whichever is less - duration 2 s
• 100 % burn in: 168 h at
P
n
at 70 °C
Revision: 29-Mar-2021
Document Number: 53043
3
For technical questions, contact:
sferthinfilm@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT
www.vishay.com/doc?91000
Space Applications Only
PRA HR (CNW HR)
www.vishay.com
OPTIONS
LOT VALIDATION TESTING
For procurement of qualified components, lot validation testing is not required and shall only be performed if specifically
stipulated in the purchase order.
For procurement of unqualified components, lot validation testing shall be performed as stipulated in the purchase order. The
need for lot validation testing shall be determined by the orderer.
When lot validation testing is required, it shall consist of the performance of one or more of the tests or subgroup test sequences
of chart F4 indicated in the ESA Generic Specification ESCC 4001. The testing to be performed and the sample size shall be as
stipulated in the purchase order. When procurement of more than one component type is involved from a family, range or series,
the selection of representative samples shall also be stipulated in the purchase order.
Lot validation testing will be composed of one LVT charges and LVT samples:
Lot validation test charges has to be ordered separately on purchase order.
Lot validation samples have to be ordered separately on purchase order.
FINAL INSPECTION
If requested by the orderer a final inspection can be performed on site.
Final inspection has to be stipulated separately on purchase order.
Vishay Sfernice
STANDARD ELECTRICAL SPECIFICATIONS
MODEL
PRA HR 100
PRA HR 135
PRA HR 182
SIZE
100
135
182
RESISTANCE
RANGE
Ω
100 to 200K
100 to 250K
100 to 1M
POWER
RATING
(1)
W
0.100
0.100
0.100
ABSOLUTE
TOLERANCE
±%
0.1, 0.5, 1
0.1, 0.5, 1
0.1, 0.5, 1
RATIO
TOLERANCE
%
0.05, 0.1
0.05, 0.1
0.05, 0.1
ABSOLUTE
TCR
(2)
± ppm/°C
10
10
10
RATIO
TCR
(3)
± ppm/°C
3
3
3
Notes
(1)
Per resistor at +70 °C
(2)
At -40 °C +155 °C
(3)
If all resistors of the array are: Rn > 250
Ω
at -40 °C to +155 °C
PEFORMANCES
TEST
Soldering temperature
PRA HR 100
Limiting voltage
PRA HR 135
PRA HR 182
PRA HR 100
Insulation voltage
PRA HR 135
PRA HR 182
SPECIFICATIONS
260 °C
35 V
75 V
100 V
70 V
RMS
150 V
RMS
200 V
RMS
CONDITION
Max.
CLIMATIC SPECIFICATIONS
Operating temperature range
Storage temperature range
-65 °C to +155 °C
-65 °C to +155 °C
SPECIAL FEATURES
Resistance values can be different on a given network
(R max./R min. as high as 300). Tooling charges might
be required depending on the ohmic values in the
same network. Please, consult Vishay Sfernice for ohmic
values, tolerances and also temperature coefficient outside
the standard range.
MECHANICAL SPECIFICATIONS
Substrate
Technology
Film
Terminations
Alumina
Thin Film
Nickel chromium with mineral passivation
B type:
SnPb over nickel barrier
Revision: 29-Mar-2021
Document Number: 53043
4
For technical questions, contact:
sferthinfilm@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT
www.vishay.com/doc?91000
Space Applications Only
PRA HR (CNW HR)
www.vishay.com
POWER RATING
Axis Title
120
100
2nd line
Rated Power (%)
80
60
40
20
0
0
20
40
60 70 80
100 120 140 155
Ambient Temperature (°C)
10
100
1000
1st line
2nd line
10000
Vishay Sfernice
PACKAGING
Several types of packaging are available: Waffle-pack and tape and reel.
NUMBER OF PIECES PER PACKAGE
SIZE
PRA100 x 2
PRA100 x 3
PRA100 x 4
PRA100 x 5
PRA100 x 6
PRA100 x 7
PRA100 x 8
PRA135 x 2
PRA135 x 3
PRA135 x 4
PRA135 x 5
PRA135 x 6
PRA135 x 7
PRA135 x 8
PRA182 x 2
PRA182 x 3
PRA182 x 4
PRA182 x 5
PRA182 x 6
PRA182 x 7
PRA182 x 8
Note
(1)
Other sizes upon request
50
in tape and reel
25
in waffle pack
50
in tape and reel
25
in waffle pack
50
in tape and reel
25
in waffle pack
MOQ
WAFFLE PACK MAX. QUANTITY PER BOX
100
140
60
50
50
50
28
140
60
60
50
28
24
24
60
60
50
21
24
24
20
50
50
50
50
2000
4000
2000
1500
50
4000
50
2500
50
50
4000
4000
50
3000
TAPE AND REEL
(1)
MIN.
50
50
50
MAX.
4000
4000
4000
Revision: 29-Mar-2021
Document Number: 53043
5
For technical questions, contact:
sferthinfilm@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT
www.vishay.com/doc?91000
