| Image | Part Number | Description / PDF | Quantity | Rfq |
|---|---|---|---|---|
 |
J.W. Miller / Bourns |
TRIMMER 50KOHM 0.25W J LEAD SIDE |
0 |
|
 |
Panasonic |
TRIMMER 200 OHM 0.3W PC PIN TOP |
2348 |
|
 |
Nidec Copal Electronics |
TRIMMER 200 OHM 0.5W PC PIN SIDE |
0 |
|
 |
J.W. Miller / Bourns |
TRIMMER 1K OHM 0.25W J LEAD SIDE |
0 |
|
 |
TT Electronics / BI Technologies |
TRIMMER 10 OHM 0.25W PC PIN TOP |
108 |
|
 |
J.W. Miller / Bourns |
TRIMMER 1.2M OHM 0.5W PC PIN TOP |
0 |
|
 |
Nidec Copal Electronics |
TRIMMER 500K OHM 0.75W SLDR HOOK |
0 |
|
 |
J.W. Miller / Bourns |
TRIMMER 200K OHM 0.25W J LEAD |
0 |
|
 |
TT Electronics / BI Technologies |
TRIMMER 5K OHM 0.25W SMD TOP ADJ |
765 |
|
 |
J.W. Miller / Bourns |
TRIMMER 10 OHM 0.5W PC PIN SIDE |
121 |
|
 |
J.W. Miller / Bourns |
TRIMMER 100 OHM 0.5W PC PIN TOP |
161 |
|
 |
J.W. Miller / Bourns |
TRIMMER 200K OHM 0.75W PC PIN |
0 |
|
 |
Nidec Copal Electronics |
TRIMMER 50 OHM 0.5W PC PIN TOP |
0 |
|
 |
Amphenol |
POT 1M OHM LINEAR |
87 |
|
 |
J.W. Miller / Bourns |
TRIMMER 200 OHM 0.5W PC PIN TOP |
0 |
|
 |
J.W. Miller / Bourns |
TRIMMER 50K OHM 0.5W PC PIN TOP |
0 |
|
 |
J.W. Miller / Bourns |
TRIMMER 2M OHM 0.5W PC PIN SIDE |
0 |
|
 |
J.W. Miller / Bourns |
TRIMMER 15KOHM 0.25W J LEAD SIDE |
0 |
|
 |
J.W. Miller / Bourns |
TRIMMER 2K OHM 0.25W PC PIN TOP |
0 |
|
 |
Nidec Copal Electronics |
TRIMMER 20 OHM 0.25W PC PIN SIDE |
0 |
|
Trimmer potentiometers (trimpots) are adjustable resistors designed for infrequent calibration and tuning of electronic circuits. Unlike standard potentiometers, trimpots are optimized for precision adjustments during device manufacturing or maintenance. They play a critical role in modern electronics by enabling fine-tuning of voltage division, signal levels, and circuit parameters in compact spaces.
| Type | Functional Characteristics | Application Examples |
|---|---|---|
| Rotary Trimmer | Adjustment via rotational knob (single-turn -turn) | Power supply calibration, amplifier gain control |
| Slide Trimmer | Linear slider mechanism for resistance adjustment | Audio equipment balance control, sensor signal trimming |
| Surface Mount (SMD) Trimmer | Miniaturized design for PCB surface mounting | Mobile devices, IoT sensors |
| Digital Trimmer | Electronic adjustment via digital interface (I2C/PWM) | Smart instrumentation, automated calibration systems |
Typical trimpot construction includes:
| Parameter | Description | Importance |
|---|---|---|
| Resistance Range | 10 to 5M standard values | Determines adjustment resolution and circuit compatibility |
| Tolerance | 5% to 20% depending on material | Impacts initial calibration accuracy |
| Power Rating | 0.1-0.5W typical | Limits maximum current/voltage handling |
| Temperature Coefficient | 100 to 200 ppm/ C | Defines stability across operating temperatures |
| Mechanical Life | 500-5000 adjustment cycles | Determines maintenance interval requirements |
| Manufacturer | Key Products | Technical Highlights |
|---|---|---|
| Bourns Inc. | 3296 series (Precision Cermet) | 0.5% tolerance, 20-turn adjustment |
| Vishay Precision Group | Vishay Dale S1A series | Hermetically sealed, MIL-STD-202 qualified |
| TT Electronics | PVH series (High-Voltage) | 500V rating, 10M maximum resistance |
| Ohmite Mfg. Co. | 789 series (High-Power) | 2W rating, aluminum heatsink design |
Key considerations include:
Emerging trends shaping trimpot development: