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Specifications
Tolerance:
±25%
Temperature Coefficient:
±250ppm/℃
Power(Watts):
150mW
Resistance:
30kΩ
Mfr. Part #:
VGF39NCHXT-B303
Package:
SMD-3P,3.8x3.7mm
Key Attributes
Model Number:
VGF39NCHXT-B303
Product Description
HOKURIKU ELECTRIC INDUSTRY CO., LTD. - VGF39NCHXT HDK Type Variable Resistor
Product Overview
The HOKURIKU ELECTRIC INDUSTRY CO., LTD. VGF39NCHXT is a 3mm chip trimmer potentiometer featuring a Metal-Glaze-Resistor, designed for general electronic equipment applications. It offers a wide operating temperature range and various resistance values, making it suitable for precise adjustments in electronic circuits. This product conforms to RoHS Directives.
Product Attributes
- Brand: HOKURIKU ELECTRIC INDUSTRY CO., LTD.
- Type: HDK VGF39NCHXT
- Resistor Type: Metal-Glaze-Resistor
- Origin: CHINA (Manufactured by DANDONG NEW LAND ELECTRONIC Co., Ltd.)
- Certifications: RoHS
Technical Specifications
| Specification | Details |
|---|---|
| Scope | 3 mm Chip trimmer potentiometer with Metal-Glaze-Resistor, used in electronic equipment. |
| Operating Temperature Range | -40 to +100 |
| Storage Temperature Range | -40 to +100 |
| Nominal Total Resistance Range | 100 to 1 M |
| Total Resistance Tolerance | 25 % |
| Power Rating | 0.15 W (up to +70 ) |
| Maximum Operating Voltage | 50 V |
| Total Mechanical Rotation | 270 20 |
| Rotational Torque | 0.98 mNm to 11.76 mNm |
| Push Load | 9.8 N (applied axially for 30 seconds) |
| End Stop Strength | 14.7 mNm (torsion moment applied for 5 seconds) |
| Soldering Strength | 9.8 N (lateral), 4.9 N (upward) applied for 30 seconds after soldering. |
| Contact Resistance (Total resistance 1 k) | 5 % of nominal total resistance |
| Contact Resistance (Total resistance > 1 k) | 2 % of nominal total resistance |
| Residual Resistance (1-2 or 2-3 terminals) | 20 (for total resistance 1 k) |
| Residual Resistance (1-2 or 2-3 terminals) | 5 % of nominal total resistance (for total resistance > 1 k) |
| Ineffective Rotation | 10 % of total mechanical rotation (at each end) |
| Temperature Coefficient (T.C.R.) | 250 ppm/ |
| Load Life (1000 h at 70) | Change in total resistance: Within 5 % of initial value. |
| Rotational Life (20 cycles) | Change in total resistance: Within 10 % of initial value. |
| Preset Position (Delivery) | Approx. center of rotation angle (50% 15% of total rotation angle) |
| Taping Quantity | 2,500 pcs/reel (excluding fractions) |
Marking
Marking uses two characters. The first digit indicates significant figures, and the second indicates the number of zeros that follow. For E series, significant digits are represented by specific alphabets (e.g., 1.5 is E, 2.2 is J).
Materials
| Part Name | Base Material | Plating |
|---|---|---|
| Board | Ceramic (Alumina) | - |
| Resistor | Metal Glaze Coating | - |
| Electrode | AgPd | - |
| 1st, 3rd Terminal | Steel | Under Plating Ni: 0.5-2 m, Surface Plating Sn: 2-4 m |
| 2nd Terminal | Steel | Under Plating Ni: 0.5-2 m, Surface Plating Sn: 2-4 m |
| Moving Contact | Stainless Steel | - |
| Sealing Resin | Acrylic | - |
| Terminal Joint | Steel | Solder (Lead-free: Sn-3Ag-0.5Cu) |
Application Notes
- Recommended soldering method: Reflow soldering. Flow soldering is not recommended.
- Handle with care to avoid excessive load or damage to the sliding part.
- Insert adjustment driver perpendicular to the sliding part.
- Avoid flux and solder scattering on the resistor surface and sliding contact during soldering.
- Product is not washable.
- Do not use adhesives for fixing the slider.
- Ensure proper solder amount and temperature during reflow soldering to avoid insufficient bonding strength or solder bridges.
- If wiring patterns are present directly under the product after mounting, ensure insulation measures (e.g., with resist).
- For applications requiring high reliability and safety, implement fail-safe designs (e.g., protective circuits, redundant circuits).
Product Storage Condition
- Recommended storage: Normal temperature (5 to 35 ) and normal humidity (45% to 85% RH).
- Storage period: 6 months from delivery.
- Store in original packaging without applying stress.
- Avoid direct sunlight and corrosive gas atmospheres.
2411220546_HDK-VGF39NCHXT-B303_C22461625.pdf
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