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Specifications
Voltage Rating:
30V
Tolerance:
±20%
Power(Watts):
250mW
Resistance:
300Ω
Mfr. Part #:
JER805HM-301
Package:
Through Hole
Key Attributes
Model Number:
JER805HM-301
Product Description
Product Overview
The JER805HM series ceramic trimmer potentiometer offers high stability, a compact size, and high precision. Designed with a metal glaze resistive element, these potentiometers feature a rated power of 0.5W and a wide resistance range from 300 to 2M. They are suitable for various applications requiring precise resistance adjustments.
Product Attributes
- Brand: JER (implied by product series naming convention)
- Series: JER805HM
- Resistive Element Material: Metal glaze
- Adjustment Type: Trimmer potentiometer
- Mounting Style: Horizontal (implied by naming convention 'H')
- Standard Packaging: 200 pcs/bag
- Certifications: Meets JIS standards (indicated by 'B' for Japanese Standard)
Technical Specifications
| Parameter Name | Specification |
|---|---|
| Rated Power | 0.5W |
| Resistance Range | 300 - 2M |
| Resistance Tolerance | 20% |
| Resistance Change Characteristic | B (Linear) |
| Max. Operating Voltage | 30VAC |
| Rotary Noise | 100mV |
| Zero Resistance (R1K) | r01, r03 10 |
| Zero Resistance (R1K) | r01, r03 < 1%R |
| Total Mechanical Travel | 270 10 |
| Effective Travel | 240 10 |
| Rotational Torque | 3mNm ~ 30mNm |
| Stopping Strength | 50mNm |
| Operating Temperature Range | -30 ~ +85 |
| Solder Heat Resistance (Terminal) | 2% within 1 hour after immersion in solder bath at 26010 for 30.5 seconds. |
| Soldering Condition (Temperature) | 26010 |
| Soldering Condition (Time) | Within 3 seconds (total time) |
| Temperature Coefficient | Within 250PPM/ |
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 |
Reliability Tests
| Test Item | Test Method | Specification |
|---|---|---|
| Rotary Life Test | Under no load, move wiper at 90% of effective angle at a speed of once every 6 seconds for 502 cycles. | Resistance change within 10%. |
| Temperature Characteristic | Under no load, place in a 703 oven for 5 hours. | Resistance change within 3%. |
| Temperature Cycling | 5 cycles of: No load -30 (30 min) Normal Temp/Humidity (15 min) 85 (30 min) Normal Temp/Humidity (15 min). After 5 cycles, place in normal temp/humidity for over 2 hours. | Resistance change within 3%. |
| Long-term Heat Resistance | Under no load, place in a 703 oven for 50010 hours. After placing in normal temp/humidity for over 2 hours. | Resistance change within 5%. |
| Damp Heat Resistance | Under no load, place in a 402, 90-95% humidity chamber for 50010 hours. After placing in normal temp/humidity for over 5 hours. | Resistance change within 5%. |
| Load Life Test | In a 402, 90-95% humidity chamber, apply rated voltage for 1.5 hours, then cut off for 0.5 hours. Repeat this cycle for 50010 hours. After placing in normal temp/humidity for over 5 hours. | Resistance change within 5%. |
Product Naming Convention
| Component | Description |
|---|---|
| JER | Series Prefix |
| 805 | Model Number |
| H | Mounting Style (Horizontal) |
| M | Adjustment Type (Micro Adjustment) |
| 101-105 | Resistance Code |
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 the semi-adjustable resistor in solvents. Contact us if cleaning is necessary.
- When inserting into a PCB or during assembly, avoid applying excessive force to the terminals, center terminal, or wiper to prevent deformation and poor contact. Exercise particular caution with the wiper in open-type models.
- Store semi-adjustable resistors away from high/low temperatures, high humidity, and corrosive gases. Pay extra attention to long-term storage.
- When storing, be mindful of the stacking pressure on the products.
- Implement a First-In, First-Out (FIFO) system for inventory management.
2512081700_JIERR-JER805HM-301_C52033437.pdf
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