ST4ETA503 Copal Electronics Inc, ST4ETA503 Datasheet - Page 2

• Manufacturer Part Number: ST4ETA503
• Description: POT 50K OHM 4MM CERM SQ TOP SMD
• Manufacturer: Copal Electronics Inc
• Series: ST4r

Specifications of ST4ETA503

• Resistance (ohms): 50K
• Power (watts): 0.25W, 1/4W
• Taper: Linear
• Tolerance: ±20%
• Temperature Coefficient: ±100ppm/°C
• Number Of Turns: Single
• Adjustment Type: Top Adjustment
• Mounting Type: Surface Mount
• Resistive Material: Cermet
• Package / Case: Square - 0.197" L x 0.177" W x 0.091" H (5.00mm x 4.50mm x 2.30mm)
• Resistance In Ohms: 50.0K
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: ST-4ETA503; ST4ETA503TR

■
A
The products indicated by A mark are manufactured upon receipt of order basis.
※ C slot : ST-4E□, B slot : ST-42E□
■
Reflow profile for soldering heat evaluation
■ Specifications are subject to change without notice. Specifications in this catalog are for reference. The formal specification sheets will be submitted upon request.
Pieces in package
Nominal resistance range
Resistance tolerance
Power ratings
Resistance law
Maximum input voltage
Maximum wiper current
Effective electrical angle
End resistance
C.R.V.
Operating temp. range
Temp. coefficient
Insulation resistance
Dielectric strength
Net weight
Adjustment
adjustment
adjustment
adjustment
印の型式、 公称抵抗値は受注生産と な り ます 。
position
Rear
Side
LIST OF PART NUMBERS
Top
ELECTRICAL CHARACTERISTICS
250
200
150
100
( C)
50
Shape of terminal
A (
B (
C (
D (
F (
G (
H (
Through hole pins
J-hook
Gull wing
Through hole pins
Gull wing
J-hook
Gull wing
180 C
150 C
)
)
)
)
)
)
)
Pre Heating Zone
Approx. 0.12 g (ST-4EA, EB, EC, ED, EF)
Approx. 0.22 g (ST-4EG, EH)
Peak : 250
DC200 V or power rating, whichever is smaller
Heating time
Reflow : two times maximum
100 mA or power rating, whichever is smaller
100
10
Over 230 C
90 30 s
A ST-4/42ETD
1 % or 2 , whichever is greater
1 % or 3 , whichever is greater
Taping (reel)
1000 M minimum (DC500 V)
500 pcs./reel
ST-4/42ETA
ST-4/42ETB
ST-4/42ETG
ST-4/42ETH
0.25 W (70 °C) 0 W (125 °C)
~ 50
~ 2 M : 100 10
30 10 s
+5
0
Linear law (B)
AC500 V, 60 s
10
210° (1 turn)
Form of packaging
C
: 250 10
55 ~ 125 °C
Soldering Zone
20 %
~ 2 M
-6
-6
/°C maximum
/°C maximum
A ST-4/42ED
A ST-4/42EF
100 pcs./pack
Plastic bag
ST-4/42EA
ST-4/42EB
ST-4/42EC
ST-4/42EG
ST-4/42EH
〉
〈
※ The above part numbers are all available with the respective combination of
※ Verify the above part numbers when placing orders.
※ Taping specification is not sold separately and must be purchased in reel units.
※ Cross slot available : ST-42E¤
■
■
A
Mechanical angle
Operating torque
Stop strength
Rotational life
Thrust to rotor
Solderability
Shear (Adhesion)
Substrate bending
Pull-off strength
Thermal shock
Humidity
Shock
Vibration
Load life
Low temp. operation
High temp. exposure
Immersion seal
Soldering heat
10 k
Nominal resistance values
：
10
<Nominal resistance values> (Fig. 1).
Test item
Not manufactured
MECHANICAL CHARACTERISTICS
ENVIRONMENTAL CHARACTERISTICS
A
20 k
20
50 k
50
SURFACE MOUNT TRIMMERS
Flow : 260 3 °C as the temperature in a pot of
molten solder, immersion from head of terminal to
backside of board, 5 ~ 6 s, two times maximum
Reflow : Peak temperature 255 °C
(Please refer to the profile below.)
Manual soldering：350 10 °C, 3 ~ 4 s
10 ~ 2000 Hz, 3 directions, 12 times each
6 directions for 3 times each
65 ~ 125 °C (0.5 h), 5 cycles
100 k
100
10 ~ 65 °C (80 ~ 98 %),
Amplitude 1.52 mm or
Acceleration 196 m/s
70 °C, 0.25 W 1000 h
COPAL ELECTRONICS
Test conditions
981 m/s
10 cycles, 240 h
125 °C, 250 h
200 k
85 °C, 60 s
200
55 °C, 2 h
Width 90 mm, bend 3 mm, 5 s, 1 time
100 cycles [ Δ R/R ≦
2
500 k
, 6 ms
10 mN·m {102 gf·cm} maximum
500
30 mN·m {306 gf·cm} minimum
Δ R/R：Change in total resistance
S.S. ：Setting stability
5 N {0.51 kgf} minimum
245 3 °C, 2 ~ 3 s
5 N {0.51 kgf} 10 s
5 N {0.51 kgf} 10 s
1 M
2
〉
1 k
,
240° (1 turn)
2 M
2 k
No leaks (No continuous bubbles)
{ }
[ Δ R/R ≦ 2 %]
[ Δ R/R ≦ 2 %]
[ Δ R/R ≦ 1 %]
[ Δ R/R ≦ 2 %]
[ Δ R/R ≦ 3 %]
[ Δ R/R ≦ 1 %]
Specifications
[ Δ R/R ≦ 3 %]
[S.S. ≦ 1 %]
[S.S. ≦ 1 %]
[S.S. ≦ 2 %]
[S.S. ≦ 2 %]
(2
5 k
[S.S. ≦ 1 %]
：
Reference only
ST-4
Fig. 1
3 %)]