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Specifications
Voltage Rating:
30V
Tolerance:
±20%
Power(Watts):
500mW
Resistance:
20kΩ
Mfr. Part #:
JER855VCR-203
Package:
Through Hole
Key Attributes
Model Number:
JER855VCR-203
Product Description
Product Overview
The JER855VCR series ceramic trimmer potentiometers offer high stability, compact size, and high precision, making them ideal for a wide range of applications. These potentiometers feature a rated power of 0.5 watts, a broad resistance range, and a metal glaze construction. They are designed for reliable performance with a nominal resistance tolerance of 20% and a linear resistance change characteristic.
Product Attributes
- Brand: JER
- Series: JER855VCR
- Type: Ceramic Trimmer Potentiometer
- Material: Metal Glaze
- Adjustment Type: Linear (B)
- Mounting Type: Vertical
- Sealing: Dustproof
- Standard Packaging: 200 pcs/bag
- Standards Compliance: IEC, JIS (B)
Technical Specifications
| Parameter | Specification |
|---|---|
| Electrical Characteristics | |
| Nominal Resistance Range | 300 - 2M |
| Nominal Resistance Tolerance | 20% |
| Resistance Change Characteristic | B (Linear) |
| Rated Power | 0.5W |
| Maximum Operating Voltage | 30VAC |
| Rotational Noise | 100mV |
| Zero Position Resistance (R 1K) | r01, r03 10 |
| Zero Position Resistance (R > 1K) | r01, r03 < 1%R |
| Physical Characteristics | |
| Total Mechanical Travel | 270 10 |
| Effective Travel | 240 10 |
| Rotational Torque | 3mNm ~ 30mNm |
| Stop Strength | 50mNm |
| Reliability | |
| Operating Temperature Range | -30 to +85 |
| Rotational Life (No Load) | Resistance change within 10% after 502 cycles |
| Temperature Characteristic (No Load) | Resistance change within 3% after 5 hours at 703 |
| Temperature Cycling (No Load) | Resistance change within 3% after 5 cycles |
| Long-term Heat Resistance (No Load) | Resistance change within 5% after 50010 hours at 703 |
| Damp Heat Resistance (No Load) | Resistance change within 5% after 50010 hours at 402, 90-95% humidity |
| Load Life Characteristic | Resistance change within 5% after 50010 hours at 402, 90-95% humidity with rated voltage |
| Solder Heat Resistance | Resistance change within 2% after immersion in solder at 26010 for 30.5 seconds |
| Temperature Coefficient | Within 250PPM/ |
| Soldering Conditions | |
| Temperature | 26010 |
| Time | Within 3 seconds (total time) |
Product Naming Rule
JER 855 V C R 102
- JER: Series
- 855: Model
- V: Mounting Type (Vertical)
- C: Sealing (Dustproof)
- R: Adjustment Type (Reverse Adjustment)
- 102: Resistance Code (e.g., 102 = 1K)
Usage Precautions
- Ensure flux is thoroughly dried before soldering to prevent quality degradation. Pay attention to flux application amount.
- Do not immerse potentiometers in solvents. Contact manufacturer for cleaning procedures if necessary.
- Avoid applying excessive force to terminals, center terminals, or wiper parts during PCB insertion and assembly to prevent deformation and poor contact. Exercise extra caution with open-type potentiometers, especially the wiper area.
- Store potentiometers away from high/low temperatures, high humidity, and corrosive gases. Pay special attention to long-term storage.
- Be mindful of stacking pressure on products during storage.
- Implement a first-in, first-out (FIFO) inventory management system.
2512081700_JIERR-JER855VCR-203_C52033434.pdf
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