78SSBWR500KLF [TTELEC]

1-1/4 Rectangular Multiturn Cermet Trimming Potentiometer; 1-1 / 4矩形多圈金属陶瓷微调电位器


型号：	78SSBWR500KLF
厂家：	TT Electronics
描述：	1-1/4 Rectangular Multiturn Cermet Trimming Potentiometer 1-1 / 4矩形多圈金属陶瓷微调电位器电位器微调电位器
文件：	总4页 (文件大小：63K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

MODEL 78

1-1/4” Rectangular

Multiturn

Cermet Trimming

Potentiometer

ELECTRICAL

Standard Resistance Range, Ohms

Standard Resistance Tolerance

Input Voltage, Maximum

Slider Current, Maximum

Power Rating, Watts

End Resistance, Maximum

Actual Electrical Travel, Turns, Nominal

Dielectric Strength

10 to 2Meg

10ꢀ ꢁ(100 Ohms ꢂ 20ꢀꢃ

300 Vdc or rms not to exceed power rating

100mA or within rated power, whichever is less

1.0 at 70°C derating to 0 at 125°C

2 Ohms

500 Vrms

Insulation Resistance, Minimum

Resolution

1,000 Megohms

Essentially infinite

Contact Resistance Variation, Maximum

1ꢀ or 1 Ohm, whichever is greater

ENVIRONMENTAL

Seal

85°C Fluorinert® ꢁNo Leaksꢃ

100ppmꢄ°C

Temperature Coefficient, Maximum

Operating Temperature Range

Thermal Shock

Moisture Resistance

Shock, 6ms Sawtooth

Vibration

–55°C to +125°C

5 cycles, –55°C to +125°C ꢁ1ꢀ ∆RT, 1ꢀ ∆VRꢃ

Ten 24 hour cycles ꢁ1ꢀ ∆RT, IR 1,000 Megohms Min.ꢃ

100G’s ꢁ1ꢀ ∆RT, 1ꢀ ∆VRꢃ

20G’s, 10 to 2,000 Hz ꢁ1ꢀ ∆RT, 1ꢀ ∆VRꢃ

250 hours at 125°C ꢁ2ꢀ ∆RT, 2ꢀ ∆VRꢃ

200 cycles ꢁ3ꢀ ∆RTꢃ

High Temperature Exposure

Rotational Life

Load Life at 0.5 Watts

Resistance to Solder Heat

1,000 hours at 70°C ꢁ2ꢀ ∆RTꢃ

260°C for 10 sec. ꢁ1ꢀ ∆RTꢃ

MECHANICAL

Mechanical Stops

Torque, Starting Maximum

Weight, Nominal

Clutch Action, both ends

5oz.-in. ꢁ0.035 N-mꢃ

.09 oz. ꢁ2.6 gramsꢃ

Fluorinert® is a registered trademark of 3M Company.

Specifications subject to change without notice.

Model 78

1-61

SIDE ADJUSTMENT (Inch/mm)

Model 78P

Circuit Diagram

Marked On This Surface

Housing

Molded Plastic

Metal

Adjustment Screw

.110ꢄ2.794 ± 0.127 Dia. With .025ꢄ0.635

± 0.127 Wide X .031ꢄ0.787 ± 0.127 Deep Slot

Model No. &

Resistance

0.07

1.78

Value Marked

On This Surface

1.25

31.75

1.000 ± .005

25.400 ± 0.127

.125 ± .005

3.175 ± 0.127

.105

.195 ± .005

4.953 ± 0.127

2.667

.32

8.13

.015 ± .003

0.127 ± 0.076

3 Terminals Pins

Solderable

.135

.50 ± .03

12.70 ± 0.76

.028 ± .003

0.711 ± 0.076

ꢁ1ꢃ

ꢁ2ꢃ ꢁ3ꢃ

3.429

Dia.

2 Mounting Holes

.093 ± .005

2.362 ± 0.127

I.D.

.05

1.27

.10

.30

7.62

.70

17.78

.260 ± .015

6.604 ± 0.381

2.54

Note: Model 78P dimensions applicable to all other models except as noted.

Model 78L

.062ꢄ1.575 Max.

Meniscus

3 Electrical Leads – 6ꢄ152 Min. Length

No. 30 AWG Teflon Insulated Stranded Wire

Yellow ꢁ1ꢃ

Red ꢁ2ꢃ

Green ꢁ3ꢃ

.187 ± .031

4.750 ± 0.787

Model 78S

3 Terminals Pins

Solderable

.028 ± .003

0.711 ± 0.075

.05 ± .02

1.27 ± 0.51

.10 ± .02

2.54 ± 0.51

ꢁ1ꢃ

ꢁ3ꢃ

ꢁ2ꢃ

Dia.

.156 ± .031

.30 ± .02

7.62 ± 0.51

Dia.

3.962 ± 0.787

ꢁ3 Placesꢃ

.26 ± .02

6.60 ± 0.51

.70 ± .02

17.78 ± 0.51

Model 78

1-62

PANEL MOUNT ADAPTER (Inch/mm)

Model 56BW (Adapter Only)

Metal Bushing Mount

Brass-Nickel Plated

Mounting Surface

.125 ± .005

Dia. Hole

3.175 ± 0.127

Use .22ꢄ5.613 Dia. Min. Mounting Hole

Lock Washer, Panel Nut, Sealing Washer

& Mounting Screws Provided

1.56

3.962

Max.

.312 ± .015

7.925 ± 0.381

.437

11.100

Model 78LBW (Adapter Pre-Assembled with Trimmer)

1.344

34.138

.250 ± .015

6.350 ± 0.381

0.94

2.388

Max.

12-28 UNF-2A Thread

Model 78SBW (Adapter Pre-Assembled with Trimmer)

1.344

34.138

.250 ± .015

6.350 ± 0.381

0.94

Max.

2.388

Max.

12-28 UNF-2A Thread

.344 ± .031

ꢁ1ꢃ

ꢁ3ꢃ

ꢁ2ꢃ

8.738 ± 0.787

Model 78

1-63

STANDARD RESISTANCE VALUES, OHMS

200

500

10K

20K

25K

50K

100K

200K

250K

500K

1Meg

2Meg

100

PACKAGING

Standard:

Boxes

Capacity

ꢂ

25 Units

ORDERING INFORMATION

78 P BW R 10K LF

RoHS Compliant Code - optional

Resistance Value

Resistance Prefix

Model Series

Pin Style

Optional Panel

Mount Adapter

Note: Use ‘56BW’ to order panel mount adapter without trimmer

CIRCUIT DIAGRAM

NOTES

Metric equivalents, based on 1 inch ꢂ 25.4mm are

rounded to the same number of significant figures

as in the original English units and are provided for

general information only.

(2)

INCH

(1)

(3)

Tolerances unless otherwise specified:

Linear ꢂ .01 inches ꢁ.25mmꢃ

Angular ꢂ 2 degrees

Model 78

1-64

相关型号：