SM31TA203 [ETC]

TRIMMER 20K OHM 0.125W SMD;


型号：	SM31TA203
厂家：	ETC
描述：	TRIMMER 20K OHM 0.125W SMD
文件：	总5页 (文件大小：847K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

SURFACE MOUNT CERMET TRIMMERS SM-3/31

INTERNAL STRUCTURE

RoHS compliant

Part name

Housing

Material

Flammability

■

FEATURES

Polyphenylenesulphide UL94V-0

Ceramic

● RoHS compliant

● Fine adjustment is possible

● Automatic mounting is possible (Taping)

● Reflow soldering is possible

● Sealed construction (Washable: Refer to page 698.)

Base element

Electrode

Resistive element

Adhesive

Ag-Pd cermet

RuO²cermet

—

Epoxy

Wiper

Multi metal alloy

Terminal pin

Rotor gear

Shaft

Copper alloy, Sn-Cu-plated

Polyamide

UL94V-0

—

Brass, Nickel-plated

■

PART NUMBER DESIGNATION

S M - 3

□

T W 1 k Ω ( 1 0 2 )

Series name

Electrical turn

Resistance code

Resistance value

Blank：11 turns

1：5 turns

Product shape (Shape of terminal)

A, W：J-hook

B：Gull wing

Form of packaging

T：Taping (Reel)

Blank：Bulk in plastic bag

※ Please refer to the LIST OF PART NUMBERS when placing orders.

SM-3/31

SURFACE MOUNT TRIMMERS

■

LIST OF PART NUMBERS

〈

Nominal resistance values〉

50 Ω 100 Ω 200 Ω 500 Ω 1 k Ω 2 k Ω 5 k Ω 10 k Ω

Form of packaging

Adjustment

position

Electrical turns

Shape of terminal

Taping (reel)

Plastic bag

20 kΩ 50 kΩ 100 kΩ 200 kΩ 500 kΩ 1 MΩ 2 MΩ

Fig. 1

Top adjustment

(J-hook)

SM-3TW

SM-3TA

SM-3W

SM-3A

SM-3B

Side adjustment

Top adjustment

Side adjustment

(Gull wing)

(J-hook)

SM-3TB

SM-31TW

SM-31TA

SM-31TB

500 pcs./reel

SM-31W

SM-31A

(J-hook)

※The above part numbers are all available with the respective combination

of <Nominal resistance values> (Fig. 1).

(Gull wing)

SM-31B

※ Verify the above part numbers when placing orders.

※

Pieces in package

50 pcs./pack

Taping specification is not sold separately and must be purchased in reel units.

■

ELECTRICAL CHARACTERISTICS

■ MECHANICAL CHARACTERISTICS

Nominal resistance range

Resistance tolerance

Power ratings

50 Ω ~ 2 M Ω

Operating torque

Mechanical stop

Rotational life

5 mN·m {51 gf·cm} maximum

± 20 %

Clutch action

0.125 W (70 °C) 0 W (150 °C)

200 cycles [ Δ R/R ≦ ± (2 Ω +3 %)]

5 N {0.51 kgf} minimum

245 ± 3 °C, 2 ~ 3 s

（B）

Linear law

Resistance law

Thrust to shaft

Solderability

Maximum input voltage DC200 V or power rating, whichever is smaller

Maximum wiper current 100 mA or power rating, whichever is smaller

Shear (Adhesion)

Substrate bending

Pull-off strength

5 N {0.51 kgf} 10 s

Effective electrical turn

End resistance

11 turns (SM-3) / 5 turns (SM-31)

1 % or 3 Ω , whichever is greater

3 % or 3 Ω , whichever is greater

− 65 ~ 150 °C

± 100 10^-6/°C maximum

100 M Ω minimum (DC500 V)

AC600 V, 60 s

Width 90 mm, bend 3 mm, 5 s, 1 time

5 N {0.51 kgf} 10 s

{

}：Reference only

C.R.V.

Operating temp. range

Temp. coefficient

Insulation resistance

Dielectric strength

Net weight

■

ENVIRONMENTAL CHARACTERISTICS

Test item

Test conditions

Specifications

[ Δ R/R ≦ 2 %]

[S.S. ≦ 2 %]

Thermal shock − 65 ~ 150 °C (0.5 h), 5 cycles

Approx. 0.10 g

− 10 ~ 65 °C (80 ~ 98 %),

Humidity

[ Δ R/R ≦ 3 %]

10 cycles, 240 h

981 m/s², 6 ms

Shock

6 directions for 3 times each

〈Reflow profile for soldering heat evaluation〉

[ Δ R/R ≦ 1 %]

[S.S. ≦ 1 %]

(Amplitude) 1.52 mm or

(Acceleration) 196 m/s²,

Vibration

10 ~ 2000 Hz, 3 directions, 12 times each

(℃)

250

Peak : 250 ⁺⁵

℃

[ Δ R/R ≦ 3 %]

[S.S. ≦ 2 %]

Load life

70 °C, 0.125 W, 1000 h

Over 230 ℃

Pre Heating Zone

[ Δ R/R ≦ 2 %]

[S.S. ≦ 2 %]

Low temp. operation

High temp. exposure

Immersion seal

− 65 °C, 2 h

200

150

180 ℃

150 ℃

[ Δ R/R ≦ 3 %]

[S.S. ≦ 2 %]

No leaks

150 °C, 250 h

90 ± 30 s

85 °C, 60 s

(No continuous bubbles)

100

30 ± 10 s

Soldering Zone

Reflow : Peak temperature 255 °C

(Please refer to the profile below.)

Manual soldering：350 ± 10 °C, 3 ~ 4 s

Soldering heat

[ Δ R/R ≦ 1 %]

Heating time

Reflow : two times maximum

Δ R/R：Change in total resistance

S.S. ：Setting stability

SM-3/31

SURFACE MOUNT TRIMMERS

■

MAXIMUM INPUT RATINGS

Nominal resistance values ( Ω )

Resistance code

Maximum input voltage (V) Maximum wiper current (mA)

500

101

201

501

2.50

3.53

5.00

7.91

50.0

35.4

25.0

15.8

100

200

500

1 k

2 k

5 k

10 k

20 k

50 k

102

202

502

103

203

503

11.2

15.8

25.0

35.4

50.0

79.1

11.2

7.91

5.00

3.54

2.50

1.58

100 k

200 k

500 k

1 M

104

204

504

105

205

112

158

200

1.12

0.79

0.40

0.20

0.10

2 M

■

RECOMMENDED P.C.B. PAD OUTLINE DIMENSIONS

(Unit : mm)

● SM-3W/31W

● SM-3A/31A

● SM-3B/31B

1.3

0.9

2.8

0.9

2.8

0.9

2.8

※

Also available to place as the

above.

Note) The zero point is the center of mounting.

■

OUTLINE DIMENSIONS

Unless otherwise specified, tolerance : ± 0.3 (Unit : mm)

● SM-3W/31W

Top adjustment

CW rotation

Resistance code & Production date code

0.8

※ Note the terminal position.

2.3

3.2

3.5

3.9

4.2

0.4W × 1.3L × 0.3D

SM-3/31

SURFACE MOUNT TRIMMERS

■

OUTLINE DIMENSIONS

Unless otherwise specified, tolerance : ± 0.3 (Unit : mm)

● SM-3A/31A

Side adjustment

● SM-3B/31B

Side adjustment

CW rotation

Resistance code &

Production date code

Resistance code &

Production date code

※

Note the terminal position.

0.4W × 1.3L × 0.3D

3.9

3.4

3 – 0.8

2 – 0.6

2.8

2 – 0.6

2.8

■

PACKAGING SPECIFICATIONS

● Taping version is packaged in 500 pcs. per reel.

Orders will be accepted for units of 500 pcs., i.e., 500,

1000, 1500 pcs., etc.

Maximum number of consecutive missing pieces = 2

Leader length and reel dimension are shown in the dia-

grams below.

● Taping version is boxed with one reel.

● EMBOSSED TAPE DIMENSIONS

● REEL DIMENSIONS

（Conforms to JIS C 0806-3）

（In accordance with EIAJ ET-7200A）

(Unit: mm)

Empty

Filled

Empty

13 ⁺¹

End

Head

21 0.8

2 0.5

40 mm min.

20 pitches min.

Leader

400 mm min.

Direction of feed

13 0.2

180 _–1.5

15.4 1

SM-3/31

SURFACE MOUNT TRIMMERS

● SM-3TW/31TW

0.1

0.05

0.4 0.1

Installation example

(SM-3W)

Cross section A-A

4.7

0.1

● SM-3TA/31TA

0.1

0.05

0.4 0.1

Installation example

(SM-3A)

3.9

Cross section A-A

0.1

● SM-3TB/31TB

0.1

0.05

0.4 0.1

Installation example

(SM-3B)

3.9

Cross section A-A

0.1

● Unit of bulk in a plastic bag is 50 pcs. per pack.

● Boxing of bulk in a plastic bag is performed with 200

pcs. per box.

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