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Specifications
Voltage Rating:
30V
Tolerance:
±20%
Power(Watts):
500mW
Resistance:
500kΩ
Mfr. Part #:
JER825VR-504
Package:
Through Hole
Key Attributes
Model Number:
JER825VR-504
Product Description
Product Overview
The JER825VR series ceramic trimmer potentiometers are designed for high stability, small size, and high precision. These potentiometers feature a rated power of 0.5W and a wide resistance range, utilizing a metal-glass glaze construction. They are suitable for applications requiring precise resistance adjustments.
Product Attributes
- Brand: JER
- Series: 825VR
- Material: Ceramic, Metal-glass glaze
- Type: Trimmer Potentiometer
- Adjustment Type: Vertical, Reverse Adjustment
- Standard Packaging: 500 pcs/bag
- Applicable Standards: JIS (Japan Standard)
Technical Specifications
| Parameter Name | Parameter Index | Details |
|---|---|---|
| Rated Power | 0.5W | |
| Resistance Range | 300 - 2M | |
| Nominal Resistance Tolerance | 20% | |
| Resistance Change Characteristic | B (Linear) | |
| Maximum Operating Voltage | 30VAC | |
| Wiper Noise | 100mV | |
| Zero Position Resistance | R 1K: r01, r03 10 R > 1K: r01, r03 < 1%R | |
| Total Mechanical Travel | 270 10 | |
| Effective Travel | 240 10 | |
| Rotational Torque | 3mNm ~ 30mNm | |
| Detent Strength | 50mNm | |
| Operating Temperature Range | -30 to +85 | |
| Rotary Life Test (No Load) | Resistance change within 10% after 502 cycles | At >90% of effective angle, 1 cycle/6 seconds |
| Temperature Characteristic (No Load) | Resistance change within 3% | After 5 hours at 703 |
| Thermal Cycling (No Load) | Resistance change within 3% | After 5 cycles of -30 (30min) -> Room Temp/Humidity (15min) -> 85 (30min) -> Room Temp/Humidity (15min), followed by 2 hours at room temp/humidity |
| Long-Term Heat Resistance (No Load) | Resistance change within 5% | After 50010 hours at 703, followed by 2 hours at room temp/humidity |
| Damp Heat Resistance (No Load) | Resistance change within 5% | After 50010 hours at 402, 90-95% humidity, followed by 5 hours at room temp/humidity |
| Load Life Test | Resistance change within 5% | After 50010 hours of cycle at 402, 90-95% humidity with rated voltage applied for 1.5 hours, then cut for 0.5 hours, followed by 5 hours at room temp/humidity |
| Solder Heat Resistance | Resistance change within 2% | After immersion in solder bath at 26010 for 30.5 seconds, followed by 1 hour at room temp/humidity |
| Temperature Coefficient | Within 250PPM/ | During placement at 25 (30min) -> -30 (30min) -> 25 (30min) -> 85 (30min) |
| Soldering Condition | Temperature: 26010 Time: Within 3 seconds (total time) |
Product Naming Convention
JER 825 V R 102
- JER: Series
- 825: Model
- V: Mounting Style (Vertical)
- R: Adjustment Type (Reverse Adjustment)
- 102: Resistance Code (e.g., 102 = 1K)
Nominal Resistance Code Table
| Resistance () | Resistance Code | Resistance () | Resistance Code |
|---|---|---|---|
| 100 | 101 | 20000 (20K) | 203 |
| 200 | 201 | 50000 (50K) | 503 |
| 500 | 501 | 100000 (100K) | 104 |
| 1000 (1K) | 102 | 200000 (200K) | 204 |
| 2000 (2K) | 202 | 500000 (500K) | 504 |
| 5000 (5K) | 502 | 1000000 (1M) | 105 |
| 10000 (10K) | 103 |
Precautions for Use:
- When performing dip soldering, ensure flux is fully dried to prevent quality degradation. Pay attention to the amount of flux applied.
- Do not immerse trimmer potentiometers in solvents. Contact us if cleaning is necessary.
- When inserting into PCBs and during assembly, avoid applying excessive force to terminals, the center terminal, or the wiper to prevent deformation and poor contact. Exercise particular caution with the wiper in open-type designs.
- Store trimmer potentiometers away from high/low temperatures, high humidity, and corrosive gases. Pay extra attention to long-term storage conditions.
- When storing, be mindful of the stacking weight on the products.
- Implement a First-In, First-Out (FIFO) inventory management system for stock.
2512081700_JIERR-JER825VR-504_C52033429.pdf
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