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Features  
■ Compact design, long life and high  
reliability  
■ Vertical and horizontal mount versions  
■ Flatted and knurled shaft styles  
■ Variety of LED colors available  
PEL12S - 12 mm Encoder with Illuminated Shaft  
Electrical Characteristics  
Output ............................................................................................................................................................................................. 2-bit gray code  
Closed Circuit Resistance...........................................................................................................................................................3 ohms maximum  
Contact Rating .............................................................................................................................................................................. 0.5 mA @ 5 VDC  
Insulation Resistance .....................................................................................................................................................100 megohms @ 250 VDC  
Dielectric Withstanding Voltage  
Sea Level ................................................................................................................................................................................300 VAC minimum  
Electrical Travel...................................................................................................................................................................................... Continuous  
Contact Bounce (15 RPM).........................................................................................................................................................2.0 ms. maximum**  
RPM (Operating)............................................................................................................................................................................. 100 maximum**  
Environmental Characteristics  
Operating Temperature Range .......................................................................................................................-10 °C to +70 °C (+14 °F to +158 °F)  
Storage Temperature Range .......................................................................................................................... -40 °C to +85 °C (-40 °F to +185 °F)  
Operating Humidity ................................................................................................................................................................... 25 % to 85 % R.H.  
Rotational Life ....................................................................................................................................................................30,000 cycles minimum  
IP Rating.......................................................................................................................................................................................................... IP 40  
Mechanical Characteristics  
Mechanical Angle......................................................................................................................................................................... 360 ° continuous  
Detent Torque.................................................................................................................................................30 to 200 g-cm (0.42 to 2.77 oz.-in.)  
Running Torque ......................................................................................................................................................50 g-cm (0.69 oz-in.) maximum  
Shaft Strength (Push-Pull)............................................................................................................................................................... 5 kgf (11.0 lbs.)  
Weight ............................................................................................................................................................................... 3 gm (0.1 oz.) maximum  
Terminals ................................................................................................................................................................. Printed circuit board terminals  
Soldering Condition  
Wave Soldering....................................................................Sn95.5/Ag2.8/Cu0.7 solder with no-clean ?ux: 260 °C max. for 5 1 seconds  
Hand Soldering..................................................................................................................................................................Not recommended  
Hardware.............................................................................................................................................................................. No hardware supplied  
How To Order  
PEL12S - 4 0 20 F - N 1 024  
Model  
Terminal Con?guration  
2 = Vertical Mount/Side Exit PC Pin  
4 = Horizontal Mount/Rear Exit PC Pin  
Detent Option  
0 = No Detents  
2 = 24 Detents  
Standard Shaft Length  
Flatted:  
15 =15.0 mm  
17 =17.5 mm  
20 =20.0 mm  
Knurled:  
24 = 24.0 mm  
25 = 25.0 mm  
30 = 30.0 mm  
Shaft Style  
F = Insulated Flatted Shaft  
S = Insulated Knurled Shaft (18 Teeth)  
Switch Con?guration  
N = No Switch  
LED Color  
Single:  
1 = Red  
3 = Blue  
4 = Orange  
5 = White  
2 = Green  
Resolution  
024 = 24 Pulses per 360 ° Rotation  
*RoHS Directive 2002/95/EC Jan 27, 2003 including Annex.  
**Devices are tested using standard noise reduction ?lters. For optimum performance, designers should use noise reduction ?lters in their circuits.  
Speci?cations are subject to change without notice.  
Customers should verify actual device performance in their speci?c applications.  
Applications  
Level control, tuning and timer settings in:  
■ Audio-visual equipment  
■ Consumer electric appliances  
■ Musical instrumentation  
■ Communications equipment  
PEL12S - 12 mm Encoder with Illuminated Shaft  
Product Dimensions  
PEL12S-4xxxS-Nxxxx (Horizontal Mount w/Single LED, No Switch)  
MOUNTING  
24.0  
(.945)  
18.0  
(.709)  
5.0  
(.197)  
SURFACE  
14.0  
(.551)  
6.0  
(.236)  
12.4  
(.488)  
13.2 0.1  
(.520 .004)  
LED  
8.2  
(.323)  
5.0 0.1  
(.197 .004)  
3.5  
(.138)  
0.8  
(.031)  
7.0  
(.276)  
2 PLCS.  
2.1 +0.1/-0  
(.083 +.004/-0)  
2.0 0.1  
(.079 .004)  
7.0 0.1  
(.276 .004)  
13.2  
(.520)  
10.2  
(.402)  
18 TEETH  
7.5 0.1  
(.295 .004)  
2.0 +0.1/-0  
(.079 +.004/-0)  
2 PLCS.  
6.0  
(.236)  
DIA.  
6.8  
(.268)  
DIA.  
A
C
B
3.5  
(.138)  
A
C
B
5.0 0.1  
(.197 .004)  
5.0  
(.197)  
1.1 +0.2/-0  
(.043 +.008/-0)  
DIA. 5 PLCS.  
0.9 0.1  
(.035 .004)  
TERMINAL DETAIL  
PEL12S-4xxxF-Nxxxx (Horizontal Mount w/Single LED, No Switch)  
MOUNTING  
SURFACE  
LM  
14.0  
(.551)  
L1  
LM  
6.0  
12.4  
(.488)  
(.236)  
3
15  
(.591)  
5.0  
L1  
(.197)  
(.118)  
8.2  
(.323)  
3.5  
0.8  
5
17.5  
(.689)  
1.5  
(.591)  
(.138)  
(.031)  
(.197)  
0.5  
(.020)  
2.0 0.1  
(.079 .004)  
7
20  
(.787)  
(.276)  
13.2  
10.2  
(.520)  
(.402)  
12  
25  
(.472)  
(.984)  
6.8  
4.5 0.05  
(.268)  
DIA.  
(.177 .002)  
12  
(.472)  
30  
(1.181)  
A
C
B
3.5  
(.138)  
6.0 0.1  
DIA.  
5.0  
(.197)  
(.236 .004)  
MM  
(INCHES)  
DIMENSIONS:  
Single LED Circuit  
TOLERANCES:  
0.3  
10.0 ~ 100  
(.394) ( .012) (.394 ~ 3.937) ( .020)  
10.0  
0.5  
=
=
UNDER  
( + )  
( - )  
Speci?cations are subject to change without notice.  
Customers should verify actual device performance in their speci?c applications.  
PEL12S - 12 mm Encoder with Illuminated Shaft  
Product Dimensions  
PEL12S-2xxxS-Nxxxx (Vertical Mount w/Single LED, No Switch)  
24.0  
(.945)  
6.0  
(.236)  
18.0  
(.709)  
3.5 0.1  
(.138 .004)  
12.4  
(.488)  
5.0  
(.197)  
2.5 0.1  
2.4  
8.2  
(.323)  
(.098 .004)  
(.094)  
0.8  
(.031)  
7.0  
(.276)  
LED  
5.0 0.1  
(.197 .004)  
B
C
A
10.8 0.1  
(.425 .004)  
13.2  
(.520)  
10.2  
(.402)  
18 TEETH  
10.0  
(.394)  
6.0  
(.236)  
DIA.  
6.8  
(.268)  
1.1 +0.2/-0  
(.043 +.008/-0)  
DIA. 5 PLCS.  
DIA.  
2.0 +0.1/-0  
(.079 +.004/-0)  
2 PLCS.  
2.1 +0.1/-0  
(.083 +.004/-0)  
2 PLCS.  
A
C
B
3.5  
(.138)  
10.0  
(.394)  
2.0  
(.079)  
5.1  
(.201)  
PEL12S-2xxxF-Nxxxx (Vertical Mount w/Single LED, No Switch)  
LM  
6.0  
(.236)  
12.4  
(.488)  
L1  
L1  
LM  
5.0  
(.197)  
2.4  
(.094)  
8.2  
(.323)  
3
15  
(.591)  
0.8  
(.031)  
1.5  
(.591)  
(.118)  
0.5  
5
17.5  
(.689)  
(.020)  
(.197)  
13.2  
(.520)  
10.2  
(.402)  
7
20  
(.787)  
(.276)  
10.0  
(.394)  
6.8  
(.268)  
DIA.  
4.5 0.05  
(.177 .002)  
12  
(.472)  
25  
(.984)  
6.0 0.1  
(.236 .004)  
DIA.  
12  
30  
(.472)  
(1.181)  
A
C
B
3.5  
10.0  
(.138)  
(.394)  
2.0  
(.079)  
5.1  
(.201)  
MM  
(INCHES)  
DIMENSIONS:  
TOLERANCES:  
10.0  
0.3  
10.0 ~ 100  
0.5  
=
=
UNDER  
(.394) ( .012) (.394 ~ 3.937) ( .020)  
Speci?cations are subject to change without notice.  
Customers should verify actual device performance in their speci?c applications.  
PEL12S - 12 mm Encoder with Illuminated Shaft  
Quadrature Output Table  
LED Characteristics (Single)  
CW  
DC  
Forward Voltage  
(V)  
Power  
Dissipation  
(mW)  
Forward  
Current  
(mA)  
OFF  
ON  
A Signal  
LED Color  
Red  
Typ.  
1.8  
2.0  
3.5  
2.2  
3.4  
Max.  
2.3  
58  
53  
25  
25  
20  
30  
30  
B Signal  
Green  
Blue  
2.5  
D
80  
4.0  
Suggested Filter Circuit  
Orange  
White  
100  
120  
2.6  
5 VDC  
4.0  
10K OHMS  
10K OHMS  
10K OHMS  
Notes:  
Reverse Current:  
Reverse Voltage:  
10K OHMS  
TERMINAL B  
0.01 μF  
10 μA  
5 VDC  
TERMINAL A  
Test Condition (IF): 20 mA  
0.01 μF  
ENCODER  
TERMINAL C  
Asia-Paci?c:  
Tel: +886-2 2562-4117  
Fax: +886-2 2562-4116  
Europe:  
Tel: +41-41 768 5555  
Fax: +41-41 768 5510  
The Americas:  
Tel: +1-951 781-5500  
Fax: +1-951 781-5700  
www.bourns.com  
11/10  
Speci?cations are subject to change without notice.  
Customers should verify actual device performance in their speci?c applications.