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Specifications
Voltage Rating:
30V
Tolerance:
±20%
Power(Watts):
250mW
Resistance:
20kΩ
Mfr. Part #:
JER805HM-203
Package:
Through Hole
Key Attributes
Model Number:
JER805HM-203
Product Description
Product Overview
The JER805HM series Ceramic Trimmer Potentiometer offers high stability, a compact size, and high precision, making it suitable for various electronic applications. Featuring a rated power of 0.5 Watts and a wide resistance range, this potentiometer utilizes a metal-glass glaze construction. It is designed for precise adjustments with a linear resistance change characteristic.
Product Attributes
- Brand: JER
- Series: JER805HM
- Type: Ceramic Trimmer Potentiometer
- Adjustment Type: Micro Adjustment
- Mounting Style: Horizontal
- Material: Metal-glass glaze
- Resistance Change Characteristic: B (Linear)
- Standard Packaging: 200 pcs/bag
- Certifications: Meets JIS standards (B)
Technical Specifications
| Parameter | Specification |
|---|---|
| Electrical Characteristics | |
| Nominal Resistance | 300 - 2M |
| Tolerance of Nominal Resistance | 20% |
| 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 |
| Detent Strength | 50mNm |
| Reliability | |
| Operating Temperature Range | -30 to +85 |
| Rotational Life (No Load) | Resistance change within 10% after 502 cycles at 90% of effective angle, 1 cycle/6 sec. |
| Temperature Characteristics (No Load) | Resistance change within 3% after 5 hours at 703. |
| Temperature Cycling (No Load) | Resistance change within 3% after 5 cycles (-30 to +85) and 2 hours at room temp/humidity. |
| Long-term Heat Resistance (No Load) | Resistance change within 5% after 50010 hours at 703 and 2 hours at room temp/humidity. |
| Damp Heat Resistance (No Load) | Resistance change within 5% after 50010 hours at 402, 90-95% humidity and 5 hours at room temp/humidity. |
| Load Life Characteristics | Resistance change within 5% after 50010 hours (1.5h rated voltage, 0.5h cut-off cycle) at 402, 90-95% humidity and 5 hours at room temp/humidity. |
| Solder Heat Resistance | Resistance change within 2% after 30.5 seconds immersion in solder at 26010 and 1 hour at room temp/humidity. |
| Temperature Coefficient | Within 250PPM/ |
| Soldering Condition | 26010, within 3 seconds (total time) |
| Product Naming Rule | |
| Format | JER - 805 - H - M - [Resistance Code] |
| JER | Series |
| 805 | Model |
| H | Mounting Style (Horizontal) |
| M | Adjustment Type (Micro Adjustment) |
| Resistance Code | e.g., 101 (100), 102 (1K), 103 (10K), etc. |
Usage Precautions
- When performing dip soldering, ensure flux is fully dried to prevent quality degradation. Pay attention to the amount of flux applied.
- Do not immerse the semi-adjustable resistors in solvents. Contact us if cleaning is necessary.
- Avoid applying excessive force to terminals, center terminals, and sliders after insertion into PCBs and assembly, as this can cause deformation and poor contact. Exercise particular caution with the moving parts of open-type potentiometers.
- Store semi-adjustable resistors away from high/low temperatures, high humidity, and corrosive gases. Exercise extra caution for long-term storage.
- Be mindful of the stacking weight of products during storage.
- Implement a First-In, First-Out (FIFO) system for inventory management.
2512081700_JIERR-JER805HM-203_C52033440.pdf
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