ERA-14EB121U Panasonic - ECG, ERA-14EB121U Datasheet - Page 3
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ERA-14EB121U
Manufacturer Part Number
ERA-14EB121U
Description
RES 120 OHM 1/4W .1% 1210
Manufacturer
Panasonic - ECG
Series
ERA-14r
Datasheet
1.ERA-14HD620U.pdf
(4 pages)
Specifications of ERA-14EB121U
Resistance (ohms)
120
Power (watts)
0.25W, 1/4W
Composition
Metal Film
Temperature Coefficient
±25ppm/°C
Tolerance
±0.1%
Size / Dimension
0.126" L x 0.098" W (3.20mm x 2.50mm)
Height
0.024" (0.60mm)
Lead Style
Surface Mount (SMD - SMT)
Package / Case
1210 (3225 Metric)
Resistance In Ohms
120
Case
1210 (3225 metric)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Features
-
Other names
ERA14EB121U
P120QTR
P120QTR
■
In case of fl ow soldering, the land width must be small er than the Chip Resistor width to properly control the sol der amount
properly. Generally, the land width should be 0.7 to 0.8 times (W) of the width of chip resistor. In case of refl ow soldering,
solder amount can be adjusted, there fore the land width should be set to 1.0 to 1.3 times chip resistor width (W).
■
The following are precautions for individual products. Please also refer to the precautions common to Fixed Resistors
shown on page ER3 of this catalog.
1. Keep the rated power and ambient temperature within the specifi ed derating curve.
2. If a transient load (heavy load in a short time) like a pulse is expected to be applied, check and evaluate the operations
3. Do not use halogen-based or other high-activity fl ux. Otherwise, the residue may impair the resistors' per for mance
4. When soldering with a soldering iron, never touch the resistors' bodies with the tip of the soldering iron. When using a
5. As the amount of applied solder becomes larger, the mechanical stress applied to the resistors increases, causing
6. When the resistors' protective coatings are chipped, fl awed, or removed, the characteristics of the resistors may be
7. Do not apply shock to the resistors or pinch them with a hard tool (e.g. pliers and tweezers). Otherwise, the resistors'
8. Avoid excessive bending of printed circuit boards in order to protect the resistors from abnormal stress.
9. Do not immerse the resistors in solvent for a long time. Before using solvent, carefully check the effects of im mer sion.
Design and specifi cations are each subject to change without notice. Ask factory for the current technical specifi cations before purchase and/or use.
Should a safety concern arise regarding this product, please be sure to contact us immediately.
Recommended Land Pattern
Recommended Soldering Conditions
Recommendations and precautions are described below.
* When positioning and mounting Metal Film Chip Resistors (hereafter called the resistors), make allowance for the
of the resistors when installed in your products before use.
When applying pulses to the resistors, keep the pulse peak within the rated voltage.
and/or reliability.
soldering iron with a high temperature tip, fi nish soldering as quickly as possible (within three seconds at 350 °C max.).
problems such as cracks and faulty characteristics. Avoid applying an excessive amount of solder.
impaired. Take special care not to apply mechanical shock during automatic mounting or cause damage during
handling of the boards with the resistors mounted.
protective coatings and bodies may be chipped, affecting their performance.
● Recommended soldering conditions for refl ow
● Recommended soldering conditions for fl ow
· Refl ow soldering shall be performed a maximum of
· Please contact us for additional information when
· Please measure the temperature of the terminals
Safety Precautions
effect of heat generated through close contact between the resistors and neigh bor ing components and for the
temperature rise of adjacent heat-generating components.
two times.
used in conditions other than those specifi ed.
and study every kind of solder and printed circuit
board for solderability be fore ac tu al use.
Preheating
Soldering
Preheating
Peak
b
Time
a
140 °C to 180 °C
Temperature
245 ± 5 °C
Chip Resistor
Heating
For soldering
60 s to 120 s
20 s to 30 s
Time
Metal Film Chip Resistors, Rectangular Type
For soldering (Example : Sn/Pb)
For lead-free soldering (Example : Sn/Ag/Cu)
Preheating
Main heating
Peak
Preheating
Main heating
Peak
(inches)
ERA3Y
ERA6Y
ERA14
(0603)
(0805)
(1210)
Type
150 °C to 180 °C
Temperature
max. 260 °C
140 °C to 160 °C
150 °C to 180 °C
0.7 to 0.9
For lead-free soldering
Above 200 °C
Above 230 °C
1 to 1.4
2 to 2.4
Temperature
Temperature
max. 260 °C
235 ± 5 °C
a
Dimensions (mm)
3.2 to 3.8
4.4 to 5.0
2 to 2.2
60 s to 120 s
b
max. 10 s
60 s to 120 s
60 s to 120 s
30 s to 40 s
30 s to 40 s
max. 10 s
Time
max. 10 s
Time
Time
0.9 to 1.4
1.8 to 2.8
0.8 to 1
Feb. 2006
c