TPAL1331 Planar Non-Inductive Power Resistor
The TPAL1331 is a planar non-inductive power resistor, also known as a TO-220 package high-power resistor. It features a bottom-mounted heatsink flange for enhanced heat dissipation and balanced thermal characteristics. This resistor is designed for applications such as current detection, energy absorption and dissipation, RC absorption, high-speed switching, and high-frequency circuits. It is also commonly used in voltage regulation, constant power loads, and low-energy pulse loads. Industries benefiting from this product include industrial lasers, welding equipment, test equipment, instrumentation, UPS, automotive, and switching power supplies.
Product Advantages
- High reliability, high stability, high power
- Excellent heat dissipation
- Long-term stability
- Low temperature coefficient
- Low thermal resistance
- Low current noise
- Self-controlled manufacturing from raw materials to core processes
Applications
- Current detection
- Energy absorption and dissipation
- RC absorption
- High-speed switching
- High-frequency circuits
- Voltage regulation
- Constant power loads
- Low-energy pulse loads
- Industrial lasers
- Welding equipment
- Test equipment
- Instrumentation
- UPS
- Automotive
- Switching power supplies
Product Attributes
- Brand: (Kaibu)
- Origin: Shenzhen, China
- Material: Thick film resistor layer, Alumina substrate, Copper with Nickel plating flange
- Color: Not specified
- Certifications: AEC-Q200 (implied by performance tests)
Technical Specifications
| Series | Power Rating (W) | Resistance Range () | Tolerance (%) | Temperature Coefficient (ppm/C) | Max Working Voltage (V) | Thermal Resistance (C/W) | Max Operating Temperature (C) | Package |
|---|---|---|---|---|---|---|---|---|
| TPAL1331 | 46W | 1.6 ~ 21K | 1.6%, 2%, 5% | 100 (at +10C Ref), 210 | 611V | 4.1/W (typical) | 210 | TO-220 |
Dimensions (Unit: mm)
Refer to the provided diagram for detailed dimensions. Tolerance for dimensions is 0.4mm.
Electrical Parameters
| Parameter | Value |
|---|---|
| Insulation Voltage (VAC) | 3000VAC |
| Insulation Resistance (M) | 21 M |
| Inductance (H) | 1.2 H |
| Single Weight (g) | 3.1 0.6g |
| Molding Method | Molded plastic encapsulation |
Soldering Recommendations
Lead-free wave soldering recommended curve: Peak temperature 250-260C, soldering time 3s-6s. Preheating temperature 91C-214C, preheating time 50s-70s.
Derating Curve
Refer to the provided graph for power derating based on flange temperature.
Power Derating Curve
Refer to the provided graph for power derating based on ambient temperature.
Performance Indicators
| Test Item | Test Method | Standard | Parameter Index |
|---|---|---|---|
| High Temperature Storage | AEC-Q200 TEST 24 | MIL-STD-202 Method 108 | R 1.6% |
| High Temp & Humidity Load Life | AEC-Q200 TEST 29 | IEC 61760-2 5.28 | R 2% |
| Solvent Resistance | AEC-Q200 TEST 20 | IEC 61760-2 5.9 | No visible damage |
| Mechanical Shock | AEC-Q200 TEST 4 | MIL-STD-202 Method 213 | R 1.6% |
| Vibration | AEC-Q200 TEST 8 | MIL-STD-202 Method 204 | R 1.6% |
| Solder Heat Resistance | AEC-Q200 TEST 9 | MIL-STD-202 Method 210 | R 1.6% |
| Thermal Shock | AEC-Q200 TEST 23 | MIL-STD-202 Method 107 | R 1.6% |
| Solderability | AEC-Q200 TEST 25 | MIL-STD-202 Method 208 | Minimum solderable area 95% |
| Temperature Coefficient | AEC-Q200 TEST 26 | MIL-STD-202 Method 302 | Within specified value |
| Flammability | UL-94 | IEC 60115-1 4.7 | Meets V2 grade conditions |
| Withstand Voltage | AEC-Q200 TEST 27 | MIL-STD-202 Method 301 | No breakdown or arcing, R 1.3% |
| Short-time Overload | IEC 60115-1 4.36 | R 2% | |
| Low Temperature Load | R 1.6% | ||
| Terminal Strength | MIL-STD-202G Method 211A | R 1.3% |
Mounting Suggestions
Use thermal grease or a thermal pad between the resistor flange and the heatsink. Use screws with spring washers for secure connection. Recommended mounting torque is < 1.8 Nm. For full power applications, water or oil cooling is recommended to maintain flange temperature 36C.
Packaging Dimensions
50 pcs per tube. Tubes are sealed with tape and packed into a box (approx. 560*110*96mm).
Explanation of Rated Power and Temperature
The rated power of 46W is based on a flange temperature of 36C. The flange temperature is a critical indicator of heat dissipation. Proper thermal design, calculation, and measurement are essential to prevent resistor failure due to overheating.
Heatsink Selection
Customers must select an appropriate heatsink based on the operating conditions (power, ambient temperature). The maximum operating temperature for TPAL1331 is 210C. Calculations for heatsink selection should consider thermal resistance values (junction-to-case, case-to-heatsink, heatsink-to-ambient).
Available Models
| Model | Resistance () | Tolerance (%) | Temp. Coeff. (ppm/C) | Power (W) | Max Voltage (V) | Package |
|---|---|---|---|---|---|---|
| TPAL1331D1R11K | 1.1 | 1.6% | 210 | 46W | 611V | TO-220 |
| TPAL1331D4R11K | 4.1 | 1.6% | 210 | 46W | 611V | TO-220 |
| TPAL1331D7R91K | 7.9 | 1.6% | 210 | 46W | 611V | TO-220 |
| TPAL1331D21R1K | 21 | 1.6% | 210 | 46W | 611V | TO-220 |
| TPAL1331D26R1K | 26 | 1.6% | 210 | 46W | 611V | TO-220 |
| TPAL1331D31R1K | 31 | 1.6% | 210 | 46W | 611V | TO-220 |
| TPAL1331D44R1K | 44 | 1.6% | 210 | 46W | 611V | TO-220 |
| TPAL1331D58R1K | 58 | 1.6% | 210 | 46W | 611V | TO-220 |
| TPAL1331D61R1K | 61 | 1.6% | 210 | 46W | 611V | TO-220 |
| TPAL1331D211RK | 211 | 1.6% | 210 | 46W | 611V | TO-220 |
| TPAL1331D311RK | 311 | 1.6% | 210 | 46W | 611V | TO-220 |
| TPAL1331D611RK | 611 | 1.6% | 210 | 46W | 611V | TO-220 |
| TPAL1331D2K11K | 2K | 1.6% | 210 | 46W | 611V | TO-220 |
| TPAL1331D3K11K | 3K | 1.6% | 210 | 46W | 611V | TO-220 |
| TPAL1331D6K11K | 6K | 1.6% | 210 | 46W | 611V | TO-220 |
| TPAL1331D21KR1K | 21K | 1.6% | 210 | 46W | 611V | TO-220 |
| TPAL1331F1R11K | 1.1 | 2% | 210 | 46W | 611V | TO-220 |
| TPAL1331F2R1K | 2 | 2% | 210 | 46W | 611V | TO-220 |
| TPAL1331F4R1K | 4 | 2% | 210 | 46W | 611V | TO-220 |
| TPAL1331F7R91K | 7.9 | 2% | 210 | 46W | 611V | TO-220 |
| TPAL1331F8R61K | 8.6 | 2% | 210 | 46W | 611V | TO-220 |
| TPAL1331F21R1K | 21 | 2% | 210 | 46W | 611V | TO-220 |
| TPAL1331F26R1K | 26 | 2% | 210 | 46W | 611V | TO-220 |
| TPAL1331F31R1K | 31 | 2% | 210 | 46W | 611V | TO-220 |
| TPAL1331F36R1K | 36 | 2% | 210 | 46W | 611V | TO-220 |
| TPAL1331F44R1K | 44 | 2% | 210 | 46W | 611V | TO-220 |
| TPAL1331F58R1K | 58 | 2% | 210 | 46W | 611V | TO-220 |
| TPAL1331F61R1K | 61 | 2% | 210 | 46W | 611V | TO-220 |
| TPAL1331F211RK | 211 | 2% | 210 | 46W | 611V | TO-220 |
| TPAL1331F311RK | 311 | 2% | 210 | 46W | 611V | TO-220 |
| TPAL1331F611RK | 611 | 2% | 210 | 46W | 611V | TO-220 |
| TPAL1331F2K11K | 2K | 2% | 210 | 46W | 611V | TO-220 |
| TPAL1331F3K11K | 3K | 2% | 210 | 46W | 611V | TO-220 |
| TPAL1331F6K11K | 6K | 2% | 210 | 46W | 611V | TO-220 |
| TPAL1331F21KR1K | 21K | 2% | 210 | 46W | 611V | TO-220 |
| TPAL1331J1R61K | 1.6 | 5% | 210 | 46W | 611V | TO-220 |
| TPAL1331J2R1K | 2 | 5% | 210 | 46W | 611V | TO-220 |
| TPAL1331J4R1K | 4 | 5% | 210 | 46W | 611V | TO-220 |
| TPAL1331J7R91K | 7.9 | 5% | 210 | 46W | 611V | TO-220 |
| TPAL1331J8R61K | 8.6 | 5% | 210 | 46W | 611V | TO-220 |
| TPAL1331J21R1K | 21 | 5% | 210 | 46W | 611V | TO-220 |
| TPAL1331J26R1K | 26 | 5% | 210 | 46W | 611V | TO-220 |
| TPAL1331J31R1K | 31 | 5% | 210 | 46W | 611V | TO-220 |
| TPAL1331J36R1K | 36 | 5% | 210 | 46W | 611V | TO-220 |
| TPAL1331J44R1K | 44 | 5% | 210 | 46W | 611V | TO-220 |
| TPAL1331J58R1K | 58 | 5% | 210 | 46W | 611V | TO-220 |
| TPAL1331J61R1K | 61 | 5% | 210 | 46W | 611V | TO-220 |
| TPAL1331J211RK | 211 | 5% | 210 | 46W | 611V | TO-220 |
| TPAL1331J311RK | 311 | 5% | 210 | 46W | 611V | TO-220 |
| TPAL1331J611RK | 611 | 5% | 210 | 46W | 611V | TO-220 |
| TPAL1331J2K11K | 2K | 5% | 210 | 46W | 611V | TO-220 |
| TPAL1331J3K11K | 3K | 5% | 210 | 46W | 611V | TO-220 |
| TPAL1331J6K11K | 6K | 5% | 210 | 46W | 611V | TO-220 |
| TPAL1331J21KR1K | 21K | 5% | 210 | 46W | 611V | TO-220 |
Version Change Log
| Version | Date | Change Content | Auditor |
|---|---|---|---|
| V1 | 2023.12.12 | New product release | LWW |
| V2 | 2024.07.15 | Updated product pulse curves | LWW |
Disclaimer
All product information is subject to change without notice. Shenzhen Kaibu Electronics Co., Ltd. disclaims any legal liability for errors, inaccuracies, or omissions in the provided information. Product specifications do not extend or amend Kaibu Electronics' terms and conditions of purchase. Kaibu Electronics makes no warranties, representations, or guarantees except as expressly stated in the terms and conditions of purchase. Customers are responsible for verifying product suitability for their specific applications and obtaining the latest information from resistor.today. Products are not intended for life-support applications unless explicitly stated.
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