WCR0402-1K8FI Welwyn Components, WCR0402-1K8FI Datasheet - Page 2

• Manufacturer Part Number: WCR0402-1K8FI
• Description: RESISTOR, 0402, 1K8, RL 10000
• Manufacturer: Welwyn Components
• Series: WCRr

Specifications of WCR0402-1K8FI

• Resistance: 1.8kohm
• Resistance Tolerance: ± 1%
• Power Rating: 63mW
• Voltage Rating: 50V
• Resistor Element Material: Thick Film
• Resistor Case Style: 0402
• No.: RoHS Compliant
• Temperature Coefficient: ± 100ppm/°C

General Purpose Surface
Mounted Resistors
WCR Series
Construction
The chips have a high alumina substrate (96% minimum) with
a ruthenium oxide resistance element and silver palladium,
nickel and tin plated terminations. A glazed protection coat
is applied to the resistive element (See Fig.1)
Terminations
Solderability
Strength
Marking
All resistors are individually marked with 3 digits. The first two
digits are the significant figures and the third defines the
number of added zeros. Jumpers are marked 000. Types 0201
and 0402 have no marking.
E96 1% components that can not be marked with 4 digits
will be marked with a standard 3 digit code. Details can be
supplied upon request.
Solvent Resistance
The protective epoxy lacquer and marking are resistant to all
normal industrial cleaning fluids suitable for printed circuits.
Performance Data
Packaging
Packaging
All chips are tape mounted and supplied on standard 8mm
All chips are tape mounted and supplied on standard 8mm
tape reel, as IEC publication 286-3.
tape reel, as IEC publication 286-3.
180mm (7 inch) reel is standard
180mm (7 inch) reel is standard carries 5,000 pieces.
250mm (10 inch) reel carrying double the standard quantity
(Except 0402 carries 10,000 pieces)
can be supplied by agreement.
250mm (10 inch) reel carrying double the standard quantity
can be supplied by agreement.
Note: For zero ohm jumper chips use the dummy value & tolerance code R005J
© Welwyn Components Limited
Telephone: [phone] · Facsimile: [phone] · Email: [e-mail] · Website: www.welwyn-tt.com
Load: 1000 hrs at 70°C
Shelf life: 12 months at room temp.
Derate linearly to zero from 70°C
Short term overload (6.25 x rated power)
Max voltage
Climatic
Climatic Catagory
Long term damp heat
Temperature rapid change
Resistance to solder heat
Vibration and bump
Noise
Insulation resistance
Voltage proof
The terminations meet the requirements of
IEC 115-1, Clause 4.17.3.2.
The terminations meet requirements of
IEC 68.2.21.
Bedlington, Northumberland NE22 7AA, UK
ohms
volts
volts
R%
R%
R%
R%
R%
R%
R%
R%
10R-100K : 1
>100K : 2
0201
0.2
2.5
50
2
3
1
1
4R7-100K : 1
>100K : 2
0402
100
100
0.2
2.5
2
3
1
1
1R-100K : 1
>100K : 2
Chip Resistor Labstock For Designers
Chip Resistor Labstock For Designers
WCR chip resistors are available in a special package of the most
WCR chip resistors are available in a special package of the most
popular sizes containing 50 each of the E24 values.
popular sizes containing 50 each of the E24 values.
Please contact the sales desk for full details of this excellent
Please contact the sales desk for full details of this excellent
solution for designers and your prototype build requirements.
solution for designers and your prototype build requirements.
0603
100
500
0.2
2.5
2.5
Figure 1
Table 1
3
1
1
1R-100K : 1
>100K : 2
< 1% tol: 1, > 2% tol: 3
>100K,
>10K,
Maximum Change
0805
Tin Plating
>100R,
v
200
500
R
0.2
2.5
2.5
Nickel Barrier
a
3
1
1
zero @ 125 °C
s e
Dipped Conductor
u l
>
see table 1
55/125/56
s i
1
e
1
0
Silver
Palladium
M
a t
> 1G
o
0
96% min Alumina Substrate
1
h
0
n
R
1
1
0
1R-100K : 1
e c
m
M
>100K : 2
0
0
s
K
K
0
1206
400
500
0.2
2.5
2.5
3
1
1
Welwyn Components
1R-100K : 1
>100K : 2
Epoxy Melamine
Protection
1210
400
500
0.2
2.5
2.5
3
1
1
Glass Dielectric
Resistance Element
1R-100K : 1
>100K : 2
N
2010
400
500
0.2
2.5
2.5
+
+
+
1 -
i o
d
3
1
1
0
1
2
3
B
0
e s
5
0
0
Issue D · 07.03
3% + 0.1R
2512
400
500
0.2
2.5
5
3
1
1
05.08