T-21 21mm Carbon

Potentiometer
FEATURES
– Carbon resistive element.
– High mechanical endurance.
– Upon request:
Detents.
Stereo matching.
Switch.
Nut & washer.
Custom assemblies with wires and connectors.
ELECTRICAL SPECIFICATIONS
– Range of values*
MECHANICAL SPECIFICATIONS
– Mechanical rotation angle: – Standard tolerance*: ± 20%
310° ± 5°
± 30%
– Electrical rotation angle: 290° ± 20°
– Torque: – Max. Voltage: 250 VDC (lin) 150 VDC (no lin)
0.5 to 1.5 Ncm.
(0.7 to 2.1 in-oz) – Nominal Power 50°C (122°F) (see power rating curve)
– Stop torque: > 80 Ncm. ( > 112 in-oz) 0.25 W (lin) 0.12 W (no lin)
– Taper* (Log. & Alog. only Rn > 1K) Lin ; Log; Alog.
– Residual resistance*:
– Equivalent Noise Resistance:
* Others upon request.
** Up to 85°C depending on application. – Operating temperature**: –25°C + 70°C (–13°F + 158°F)

HOW TO ORDER
STANDARD OPTIONAL EXTRAS
T-21 A C M06 07 223 A 2020 0

Series Terminals Bushings Taper Shafts spec. length Stereo matching

T-21 C= Solder Lugs Code Shaft ØA Bushing Ø B Length C A= linear XX.X 3D = 3dB
H= Horiz. PCB B= Log. (See note 6) 4D = 4dB
07 6 M10 x 0.75 9
L= Horiz. in Line PCB C= Alog. 6D = 6dB
08 6 M10 x 0.75 12
V= Vert. PCB Detents (See note 8)
09 6 M10 x 0.75 19 (See note 10)
Other tapers
11 6 "U" 3/8" x 32 h. 9 on request 01P= 1 detent
Models Shafts 12 6 "U" 3/8" x 32 h. 12 11P= 11 detents Nut & washer
41P= 41 "
Metal shaft Plastic shaft Metal Plastic Value -TA = Loose nut & washer
13 6.35 "U" 3/8" x 32 h. 9 (See note 7)
A X M06 P01
M07 MTA= Assembled nut &
D W 14 6.35 M10 x 0.75 9 Switch washer
T Y M08 P12
M11 00 For models pot. X,W, S Tolerance F01 = Mod. F1 MT- = Assembled nut
S Z
(See note 3) 1010= ± 10% 112 = Mod. F2 -T- = Loose nut
(See note 1) "" ""
M16 2020= ± 20%
744 = Mod. F2
(See note 2) 3030= ± 30%
(See note 9)
(See note 4) (See note 5)
NOTES: (1) MODELS : Models D y T are not available with "V" terminals.
(2) SHAFTS: The codes indicate diameter and length. M08: Code for the double potentiometer.
(3) BUSHINGS ; The codes types 11, 12 and 13 have an antirotation lug (at 90°CW). Plastic shaft and double model are only available with Ø6 bushing.
(4) VALUE: Code: 10 1
Number of zeros
2 first digits of the value.
In models "D" and "T" with different values, order under special drawing number.
(5) Tolerance (special), upon request. Example : +7% Code : 07 05
-5% negative tolerance
positive tolerance
(6) Shafts special length:
Only for special length and plain shafts (not knurled). Example: Shaft Ø6 L= 24.5 M06 ....... 24.5
Flatted and slotted shafts, etc. will need drawing. special length
shafts
Shaft M08 (T-21D) with other length, order under special drawing number.
Recomendation : Shaft L > 60 ..... bushing C = 19
(7) DETENTS : - Not available in models with plastic shaft X, W, Y, Z.
- Detents and switch are not compatible.
(8) Stereo matching: Only available in tandem models and upon request.

(9) SWITCHES : Two types of switches are offered: F1 and F2.

F1 = The code is "F01"
Plastic shafts are only available if they are code P10, P11 or P12
F2 = (Only with metal shaft) Indicate the corresponding I-21 switch code.

(10) Switch option not available with antilog taper.

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 STANDARD OPTIONS
Shaft length .................................. 0 standard Switch ............................................ No switch
Detents ......................................... Without Nut & washer ................................ Without nut and washer
Stereo matching ............................ Only for model "T" and upon request Wiper position ............................................... Initial

MODELS WITH METALIC SHAFTS

10
T-21 A T-21 T

7
7
M 10 x 0.75 M 10 x 0.75

26

26
2.5
6

6
9 9
60 + 0.5 10 21.5 60 + 0.5 20 21.5

S
T-21 D T-21 S 4
E A

7
M 10 x 0.75
6

4
26
2.5
4

26
6

ÑA
PI H
ER

A
P
9 ES
S (wiper) 5 0.7
50 + 0.5 10 21.5
(final) E A (initial)
60 + 0.5 20 60 + 0.5 9 22.5

MODELS WITH PLASTIC SHAFTS

1
T-21 X + 0.1 T-21 W
9 1

7
7

1.5

0.1
7.5
7

1.2
1.2
0.1

26
26
6

ÑA
ÑA

PI H
PI H

ER ER

A
A

P P
4.6

ES ES
K 5 0.7 5 K 0.7

L + 0.5 9 22.5 22.5 9 L + 0.5 22.5

T-21 Y T-21 Z
7

7
M 10 x 0.75 M 10 x 0.75
1.2

1.2
0.1
0.1

26

26
2.5

2.5
6

K 9 K
+ 0.5 + 0.5
L 10 21.5 9 10 L 21.5

TERMINALS
10 1.3 10 5 5
T-21 C T-21 H + 0.1
1.3
2

+ 0.1
2.5 2.5 1
2.5
22.3

4
16

10

5 5
20 21.5

10 5 5 10
T-21 L 1.3
+ 0.1 T-21 V
+ 0.1
2.5 1 5 5 4 5 5
2.5
2.5
4

+ 0.1
1.3
13.5
16

16
10

5 5 + 0.1
10.1

81
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 PLASTIC SHAFTS
T-21 X / Y S/ I T-21YT-21
w/Sw
Y C / I F01
F01
T-21 X/Y without Switch Knurling length T-21 Y CODE
Knurling length T-21 X T-21 Y CODE K= 5 L = 16 P10
K= 0 L= 2 / P01 K = 14.6 L = 25 P11
K=6 L = 10 / P02 K = 35 L = 46 P12
K = 12 L = 16 L = 15 P03
T-21 W/Z without Switch
K = 12 L = 26 L = 25 P04
Knurling length T-21 W T-21 Z CODE
K = 12 L = 36 L = 35 P05
K = 12 L = 26 L=
L=26 P07
K = 35 L = 46 L = 45 P06
K = 12 L = 36 L=
2636 P08
K = 12 L = 46 L=
L=46 P09

METALIC SHAFTS
PLAIN SHAFT UNDER DRAWING
+ 0.5
A L CODE
L
6 60 M06 FLATTED SHAFT

5 O
+
O
6.35 60 M07

90
4/6 50/60 M08

A
A

+ 0.5
L
L A B C CODE
KNURLED SHAFT 15 2 6 7 M11
L
SLOTTED SHAFT
18 tooth B A 20 2 10 11 M12
25 4 12 14 M13

+5O
A
30 4 12 14 M14
O6

0O
35 4 12 14 M15
1

C + 0.5
40 4 12 14 M16 L

BUSHINGS
NON ROTARY PAWL
STANDARD
B (Thread)

2
B (Thread)

+ 0.1
10.1

3
2.5

CODE A B C
A

4
07 6 M10 x 0.75 9
08 6 M10 x 0.75 12 C 9.5 21.5 10.7
09 6 M10 x 0.75 19
14 6.35 M10 x 0.75 9
CODE A B C
C 10 21.5
11 6 3/8" x 32 h. 9
12 6 3/8" x 32 h. 12
13 6.35 3/8" x 32 h. 9

DETENTS TAPERS POWER RATING CURVE

W (%)
7

100
M 10 x 0.75
80 100 %
C
% Rn

60 A: Lin.
26
2.5

A B: Log.
6

40 C: Alog. 40 %
B
20
9
A E C
0 25 50 75 100 50 70
60 + 0.5 13.5 21.5
% Mechanical rotation

TESTS TYPICAL VARIATIONS

ELECTRICAL LIFE 1.000 h. 50°C; 0.25 W ±5 %
MECHANICAL LIFE* : 25.000 (10-15 CPM) ±3 % (Rn < 1 M)
TEMPERATURE COEFFICIENT –25°C; +70°C ±300 ppm (Rn < 100 K)
THERMAL CYCLING 16 h. @ 85°C; 2h. @ –25°C ±2.5 %
DAMP HEAT 500 h. 40°C 95% HR ±5 %
VIBRATION (for each plane X,Y,Z) 2 h. @ 10 Hz – 55 Hz. ±2 %
NOTE: Out of range values may not comply these results.
(*) only applicable to values 1K. For lower values please consult.

PACKAGING
Boxes of 150 / 200 pieces (160 x 110 x 85 mm.)

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 SWITCH F1

22
11.4 MECHANICAL & ELECTRICAL
F1
SPECIFICATIONS
5.9
OPERATING ANGLE 50° ±5°
OPERATING TORQUE 3 -7 Ncm (4.2- 9.8 in-oz)
MAXIMUM AXIAL CHARGE 80 N; 17 pounds
NOMINAL CURRENT 1A; 250 VAC
CONTACT RESISTANCE 25m
TEST VOLTAGE (DIELECTRIC STRENGTH) 2000 V (50 Hz)
16.5

SWITCH F2

ELECTRICAL SPECIFICATIONS F2
SWITCH RATING 2 or 4A; 250 VAC
CONTACT RESISTANCE 25 m
DIELECTRIC STRENGTH 2000 V
INSULATION RESISTANCE 100 M
MECHANICAL
MECHANICALSPECIFICATIONS
SPECIFICATIONS F2
OPERATING ANGLE (ROTARY) 35° ± 5°
PUSH / PUSH OPERATING TRAVEL 4 mm.
PUSH / PULL OPERATING TRAVEL 2.5 mm.
OPERATING TORQUE (ROTARY) 2 to 9 Ncm. (2.8 to 12.7oz/in)
OPERATING FORCE (Push/Push ; Push/Pull) 4 to 7 N (14 to 27 oz)
MECHANICAL LIFE 10.000 cycles
STOP TORQUE > 100 Ncm. (142 oz/in)

R O T A R Y P U S H

12.5 5 5 + 0.1
T-21 ... F2 2.5 13.5 5 T- 21 ... F2 2.5 1
E S A
7

PUSH / PUSH

4
M 10 x 0.75
4.5
17.5

M10 x 0.75

16
26
6

2.5
9 11.2 9 10
60 + 0.5 29.5 21.5
60 + 0.5 26 21.5
PUSH / PULL

2.5 2.5 O1.5 2.5 2.5

O1.5
A 1 A
5 5

5 5

5 5

5 5

S 2 2 S
2 3 1 2 3
E 3 3 E
Cod.: 512 Cod.: 522 2.5 17.5 5 O1.5 2.5 12.5 5 5 O1.5
2.5 12.5 2.5 12.5
514 524
1 SPDT Cod.: 712 Cod.: 722 1
SPST SPDT
2 SPST
2 714 2 3 724 2
3 3 612 622 3
614 624

2.5 2.5 O1.5 2.5 2.5

O1.5
1 4
5 6 4 5 6
5 5

5 5

5 5

5 5

Terminals pot. 2 5 2 5 Terminals pot.

2 3 1 2 3
3 6 3 6
O1.5 O1.5
Terminals switch 2.5 12.5 5 5
2.5 12.5 5 2.5 12.5 5 2.5 17.5 5
Terminals switch
Cod.: 742
Cod.: 532 Cod.: 542 Cod.: 732 744
534 544 734 642
4 632 DPST 6 DPDT 644
5 6 DPST 5 6 DPDT
634 5 5 4
1 6 1
2 3 2 3 2 3 2 3

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 I-21 HOW TO ORDER (only switch)

STANDARD OPTIONAL

I- 21 2 3 4 M06 0

Switch Shafts
Series Code model Circuits Shaft spec. length

1 1 1 M04; L= 40 XX.X
I - 21
2 2 1 M06; L= 60
3 1 2 (See note 3)
(See note 1) (See note 2)
4 2 2

Nut & washer

Code Switch model Terminals - TA = Loose nut & washer
MTA = Assembled nut & washer
1 rotary switch Solder lugs
Code Current Voltage MT - = Assembled nut
2 push/ push switch Solder lugs
3 push/ pull switch Solder lugs - T - = Loose nut
2 2 A 250 V
5 rotary switch PCB
4 4 A 250 V
6 push/ push switch PCB
7 push/ pull switch PCB

NOTES:
(1) When only the switch is ordered (without potentiometer), it will be called "I -21" followed by the respective code.
(2) The shaft and bushing for "I -21" is:
COD. A B L
M06 6 M10 x 0.75 60

(3) Only for special length and plain shaft (not knurled).
Example: E: Ø6 L= 24.5 M06 24.5
special length
Flatted and slotted shafts, etc. will need drawing.

HOW TO ORDER CUSTOM DRAWING STANDARD OPTIONS

(Max. 16 digits) Shaft length ........................................... See note 2

I-21 + DRAWING NUMBER
This way of ordering should be used for options which are not included Nut & washer .................................... Without nut
in the "How to order" standard and optional extras. and washer

R O T A R Y P U S H
10.5 5 5 5 11.5 5 5 5 5
I -21 ... I- 21 ... + 0.1
1+0.1 3 2 1 4 5 6 1
1 4 PUSH / PUSH 1 4
4

M10 x 0.75 4
4.5
M10 x 0.75
16
16
Ø6

Ø6
2.5

2.5

2.5
9 9
+ 0.5 26 21.5
L 60
+ 0.5
L 60 21.5 21.5
PUSH / PULL

NUT & WASHER

2.5 10 0.7 2.5 13 0.7 2.5 14 0.7

7.5 9.8 10.5

M7 x 0.75 14 W 3/8 x 32 18 M10 x 0.75 18

PACKAGING

Boxes of 100 pieces ( 160 x 110 x 85 mm.).

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 OPEN CIRCUIT FEATURE (CUT TRACK)

PCI PCF
Cut track at the beginning Cut track at the end
of the travel. of the travel

A S E A S E
A E A E
S S

CCW on-off (A) CW on-off (E)

A = Initial S = Wiper E = Final.

PCI, PCF and other configurations available upon request. Check the ordering code with Piher.

RECOMMENDED CONNECTIONS

VCC

Piher potentiometer’s recommended S

connection circuit for a position sensor or R AD
control application.
(voltage divider circuit electronic design).
A RL C
Noise filter.

Ground.

RL 100 x R

Disclaimer
Contact
The product information in this catalogue is for reference purposes. Please consult for the most up to date and
accurate design information.
Piher Sensors & Controls SA
Piher Sensors & Controls S.A., its affiliates, agents, and employees, and all persons acting on its or their behalf Polígono Industrial Municipal
(collectively, “Piher”), disclaim any and all liability for any errors, inaccuracies or incompleteness contained herein
Vial T2, 22,
or in any other disclosure relating to any product described herein.
31500 Tudela - Spain.
Piher disclaims any and all liability arising out of the use or application of any product described herein or of any t. +34-948-820450
information provided herein to the maximum extent permitted by law. The product specifications do not expand or f. +34-948-824050
otherwise modify Piher’s terms and conditions of sale, including but not limited to the warranty expressed therein,
which apply to these products. sales@piher.net

No licence, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document
or by any conduct of Piher. www.piher.net

The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications unless
otherwise expressly indicated. Customers using or selling Piher products not expressly indicated for use in such
applications do so entirely at their own risk and agree to fully indemnify Piher for any damages arising or resulting
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ISO 14001
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Certification

All Piher products can be adapted to meet customer´s requirements.

Due to continuous process improvement, specifications are subject to change without notice.
Please always use the latest updated datasheets and 3D models published at our website www.piher.net.
v060721