HR Datasheet, PDF (2/2 Pages) Welwyn Components Limited – High Value Surface Mounted Resistors

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Welwyn Components
Performance Data
Load at rated power: 1000 hours at 70°C
Overload
Shelf life: 12 months at room temperature
Temperature rapid change
Change on Wave Soldering
Voltage proof
Voltage coefficient of resistance (10V - 25V)
∆R%
∆R%
∆R%
∆R%
∆R%
volts
%/V
0805
1005
1206
Maximum
2
1
2
1
1
0503 : 100
Typical
1
0.2
1
0.3
0.5
0805 to 1206 : 500
1
0.4
0.8
0.3
0.2
0.05
Application Notes
Mounting
This chip resistor is ideally suited for handling by automatic
methods due to its rectangular shape and the small
dimensional tolerances. Electrical connection to a ceramic
substrate or to a printed circuit board can be made by wire
bonding to planar terminations or by reflow soldering of
wrap-around terminations. The ‘F’ terminations provide good
leach properties and ensure reliable contact. Due to the
robust construction the resistor chip can be immersed in the
solder bath for 30 seconds at 260°C. This enables the resistor
to be mounted on one side of a printed circuit and wire-
leaded components on the other side. The resistor must be
kept dry during use to avoid leakage. The presence of
moisture will not damage the resistor in any way.
Packaging
Resistor chips are supplied taped and reeled on standard
8mm tape to IEC 286-3.
Quantity per reel 3000 max.
Planar Terminations
Resistor chips are supplied in waffle packs.
Ordering Procedure
Example: HR1206 with solderable wraparound terminations at 10 gigohms and 50% tolerance
on a reel of up to 3000 pieces -
HR1206F– 10GYI
Type
Size
Termination
F Solderable wraparound
G Gold pad planar
0805, 1206 only
All sizes
Value (use IEC62 code)
Tolerance (use IEC62 code)
J 5%
5 25%
K 10%
Y 50%
Packing
I
Tape
Waffle
0805F, 1206F
G Termination
Up to 3000/reel _Standard
General Note
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Issue B · 03.02
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