Product Overview
The TPAL1331 is a planar non-inductive power resistor designed to address customer design and manufacturing challenges in various electronic applications. It features a TO-220 package with an integrated flange for enhanced heat dissipation, offering high reliability, stability, and power handling capabilities. This resistor is suitable for current detection, energy absorption and discharge, RC absorption, high-speed switching, and high-frequency circuits, finding applications in industrial lasers, welding equipment, test equipment, instruments, UPS, automotive electronics, and switching power supplies.
Product Attributes
- Brand: (KAI BU)
- Origin: (Shenzhen Kai Bu Electronics Co., Ltd.)
- Material: Thick Film, Molded Plastic Seal
- Certifications: AEC-Q200 (implied by test methods)
Technical Specifications
| Series | Power (W) | Resistance Range (Ω) | Resistance Tolerance (%) | Temperature Coefficient (ppm/°C) | Max Operating Voltage (VAC) | Thermal Resistance (°C/W) | Operating Temperature Range (°C) | Package | Inductance (µH) |
|---|---|---|---|---|---|---|---|---|---|
| TPAL1331 | 46 | 1.6 ~ 21K | ±1.6, ±2, ±5 | ±100 (+10°C Ref) | 611 | 4.1 | -55 ~ +275 | TO-220 | ≤1.2 |
| TPAL1331 (with heatsink) | 46 | 1.6 ~ 21K | ±1.6, ±2, ±5 | ±100 (+10°C Ref) | 611 | (Refer to heatsink) | -55 ~ +275 | TO-220 | ≤1.2 |
Detailed Specifications
| Parameter | Specification | Notes |
|---|---|---|
| Rated Power (No Heatsink) | 31.3W | At flange temperature ≤130°C |
| Rated Power (With Heatsink) | 46W | At flange temperature ≤130°C |
| Resistance Standard | E15 | |
| Single Unit Weight | 3.1±1.6g | |
| Molding Method | Molded Plastic Seal | |
| Resistor Technology | Thick Film | |
| Insulation Voltage | 3000VAC | |
| Insulation Resistance | ≥21MΩ | |
| Test Frequency Range (1.6Ω ~ 2KΩ) | 2KHz ~ 2MHz | |
| Test Frequency Range (2KΩ ~ 21KΩ) | 2KHz ~ 211KHz | |
| Dimensions (Unit: mm) | Refer to diagram | Tolerance ±0.4mm |
Ordering Example
TPAL1331F21R1K (TPAL1331 Series, ±2% Tolerance, 21Ω Resistance, ±100ppm/°C Temperature Coefficient, Standard Product)
Marking Description
The product marking consists of: Brand Logo + Product Series Specification + Tolerance Code + Resistance Code + Temperature Coefficient Code.
Soldering Recommendations
Lead-free wave soldering recommended curve provided. Peak temperature: 250-260°C, soldering time: 3s-6s. Preheating temperature: 150-240°C, time: 50s-70s.
Derating Curve
Power derating curve based on flange temperature is provided.
Power Temperature Rise Curve
Curve showing surface temperature rise versus applied power.
Pulse Energy and Power Curves
Pulse energy and pulse power curves are provided for various pulse durations.
Performance Indicators
| Test Item | Test Method | Standard | Parameter Index | Notes |
|---|---|---|---|---|
| High Temperature Storage | AEC-Q200 TEST 24 | MIL-STD-202 Method 108 | ΔR≤±1.36% | |
| High Temp & High Humidity Load Life | AEC-Q200 TEST 29 | IEC 61760-2 5.28 | ΔR≤±2% | 1000 hours @ +275°C, rated power |
| Solvent Resistance | AEC-Q200 TEST 20 | IEC 61760-2 5.9 | No visible damage | Immersion in 4 solvents, 2 min, scrubbed 10 times, 3 cycles |
| Mechanical Shock | AEC-Q200 TEST 21 | MIL-STD-202 Method 213 | ΔR≤±1.36% | Half sine wave, peak acceleration 100g's, pulse duration 6ms, 6 directions, 3 axes |
| Vibration | AEC-Q200 TEST 22 | MIL-STD-202 Method 204 | ΔR≤±1.36% | 10Hz-2KHz, 5g's, 10 min per cycle, 23 cycles each on X, Y, Z axes |
| Solder Heat Resistance | AEC-Q200 TEST 23 | MIL-STD-202 Method 204 | ΔR≤±1.36% | +260°C tin bath, hold for 3 seconds |
| Thermal Shock | AEC-Q200 TEST 25 | MIL-STD-202 Method 107 | ΔR≤±1.36% | -55°C (25 min) to +275°C (25 min), 1000 cycles |
| Solderability | AEC-Q200 TEST 26 | MIL-STD-202 Method 208 | Minimum solderable area 95% | +245°C tin bath, hold for 3 seconds |
| Temperature Coefficient | AEC-Q200 TEST 27 | MIL-STD-202 Method 103 | Within specified value | Measured at -55°C and +275°C, reference +25°C |
| Flammability | UL-94 | Complies with V2 level | Two 10-second burns on sample | |
| Withstand Voltage | IEC 60115-1 4.7 | No breakdown or arcing | 1000VAC applied between terminals and flange, hold for 60s | |
| Short-time Overload | IEC 60115-1 4.36 | ΔR≤±2% | 1.5x rated power, not exceeding 2.6x max operating voltage, for 5 seconds | |
| Low Temperature Load | AEC-Q200 TEST 28 | MIL-STD-202 Method 105 | ΔR≤±1.36% | -55°C, 2 hours no load; rated voltage load 30 min, no load 10 min |
| Terminal Strength | MIL-STD-202G Method 211A | ΔR≤±1.36% | Apply 10N tensile force, hold for 6-10 seconds |
Mounting Suggestions
For TO-220 package resistors, apply 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 <1.8N·m. For full power applications, water or oil cooling is recommended to maintain flange temperature ≤130°C.
Packaging Dimensions
Products are packed in tubes (50PCS/tube), sealed with tape, bundled (30 tubes/bundle), and placed in an outer box (approx. 560*110*96mm).
Rated Power and Temperature Explanation
The maximum rated power of 46W is based on a flange temperature of 130°C. Flange temperature is a critical indicator of heatsink performance. Proper thermal design, calculation, and measurement are essential to prevent overheating and ensure product longevity.
Heatsink Selection
Customers must select an appropriate heatsink based on operating conditions (power, ambient temperature). The calculation for required heatsink thermal resistance (RTH(c-h) + RTH(h-a)) is provided.
Available Models
| Model | Resistance (Ω) | Tolerance (%) | Temperature Coefficient (ppm/°C) | Power (W) | Max Operating Voltage (V) | Package |
|---|---|---|---|---|---|---|
| TPAL1331D1R1K | 1.6 | ±1.6% | ±100 | 46 | 611 | TO-220 |
| TPAL1331D4R1K | 4 | ±1.6% | ±100 | 46 | 611 | TO-220 |
| TPAL1331D4R4K | 4.4 | ±1.6% | ±100 | 46 | 611 | TO-220 |
| TPAL1331D7R9K | 7.9 | ±1.6% | ±100 | 46 | 611 | TO-220 |
| TPAL1331D8R6K | 8.6 | ±1.6% | ±100 | 46 | 611 | TO-220 |
| TPAL1331D21R1K | 21 | ±1.6% | ±100 | 46 | 611 | TO-220 |
| TPAL1331D26R1K | 26 | ±1.6% | ±100 | 46 | 611 | TO-220 |
| TPAL1331D31R1K | 31 | ±1.6% | ±100 | 46 | 611 | TO-220 |
| TPAL1331D36R1K | 36 | ±1.6% | ±100 | 46 | 611 | TO-220 |
| TPAL1331D44R1K | 44 | ±1.6% | ±100 | 46 | 611 | TO-220 |
| TPAL1331D58R1K | 58 | ±1.6% | ±100 | 46 | 611 | TO-220 |
| TPAL1331D61R1K | 61 | ±1.6% | ±100 | 46 | 611 | TO-220 |
| TPAL1331D211RK | 211 | ±1.6% | ±100 | 46 | 611 | TO-220 |
| TPAL1331D311RK | 311 | ±1.6% | ±100 | 46 | 611 | TO-220 |
| TPAL1331D611RK | 611 | ±1.6% | ±100 | 46 | 611 | TO-220 |
| TPAL1331D2KR1K | 2K | ±1.6% | ±100 | 46 | 611 | TO-220 |
| TPAL1331D3KR1K | 3K | ±1.6% | ±100 | 46 | 611 | TO-220 |
| TPAL1331D6KR1K | 6K | ±1.6% | ±100 | 46 | 611 | TO-220 |
| TPAL1331D21KR1K | 21K | ±1.6% | ±100 | 46 | 611 | TO-220 |
| TPAL1331F1R6K | 1.6 | ±2% | ±100 | 46 | 611 | TO-220 |
| TPAL1331F2R1K | 2 | ±2% | ±100 | 46 | 611 | TO-220 |
| TPAL1331F2R6K | 2.6 | ±2% | ±100 | 46 | 611 | TO-220 |
| TPAL1331F3R1K | 3 | ±2% | ±100 | 46 | 611 | TO-220 |
| TPAL1331F4R1K | 4 | ±2% | ±100 | 46 | 611 | TO-220 |
| TPAL1331F4R4K | 4.4 | ±2% | ±100 | 46 | 611 | TO-220 |
| TPAL1331F7R9K | 7.9 | ±2% | ±100 | 46 | 611 | TO-220 |
| TPAL1331F8R6K | 8.6 | ±2% | ±100 | 46 | 611 | TO-220 |
| TPAL1331F21R1K | 21 | ±2% | ±100 | 46 | 611 | TO-220 |
| TPAL1331F26R1K | 26 | ±2% | ±100 | 46 | 611 | TO-220 |
| TPAL1331F31R1K | 31 | ±2% | ±100 | 46 | 611 | TO-220 |
| TPAL1331F36R1K | 36 | ±2% | ±100 | 46 | 611 | TO-220 |
| TPAL1331F44R1K | 44 | ±2% | ±100 | 46 | 611 | TO-220 |
| TPAL1331F58R1K | 58 | ±2% | ±100 | 46 | 611 | TO-220 |
| TPAL1331F61R1K | 61 | ±2% | ±100 | 46 | 611 | TO-220 |
| TPAL1331F211RK | 211 | ±2% | ±100 | 46 | 611 | TO-220 |
| TPAL1331F311RK | 311 | ±2% | ±100 | 46 | 611 | TO-220 |
| TPAL1331F611RK | 611 | ±2% | ±100 | 46 | 611 | TO-220 |
| TPAL1331F2KR1K | 2K | ±2% | ±100 | 46 | 611 | TO-220 |
| TPAL1331F3KR1K | 3K | ±2% | ±100 | 46 | 611 | TO-220 |
| TPAL1331F6KR1K | 6K | ±2% | ±100 | 46 | 611 | TO-220 |
| TPAL1331F21KR1K | 21K | ±2% | ±100 | 46 | 611 | TO-220 |
| TPAL1331J1R6K | 1.6 | ±5% | ±100 | 46 | 611 | TO-220 |
| TPAL1331J2R1K | 2 | ±5% | ±100 | 46 | 611 | TO-220 |
| TPAL1331J2R6K | 2.6 | ±5% | ±100 | 46 | 611 | TO-220 |
| TPAL1331J3R1K | 3 | ±5% | ±100 | 46 | 611 | TO-220 |
| TPAL1331J4R1K | 4 | ±5% | ±100 | 46 | 611 | TO-220 |
| TPAL1331J4R4K | 4.4 | ±5% | ±100 | 46 | 611 | TO-220 |
| TPAL1331J7R9K | 7.9 | ±5% | ±100 | 46 | 611 | TO-220 |
| TPAL1331J8R6K | 8.6 | ±5% | ±100 | 46 | 611 | TO-220 |
| TPAL1331J21R1K | 21 | ±5% | ±100 | 46 | 611 | TO-220 |
| TPAL1331J26R1K | 26 | ±5% | ±100 | 46 | 611 | TO-220 |
| TPAL1331J31R1K | 31 | ±5% | ±100 | 46 | 611 | TO-220 |
| TPAL1331J36R1K | 36 | ±5% | ±100 | 46 | 611 | TO-220 |
| TPAL1331J44R1K | 44 | ±5% | ±100 | 46 | 611 | TO-220 |
| TPAL1331J58R1K | 58 | ±5% | ±100 | 46 | 611 | TO-220 |
| TPAL1331J61R1K | 61 | ±5% | ±100 | 46 | 611 | TO-220 |
| TPAL1331J211RK | 211 | ±5% | ±100 | 46 | 611 | TO-220 |
| TPAL1331J311RK | 311 | ±5% | ±100 | 46 | 611 | TO-220 |
| TPAL1331J611RK | 611 | ±5% | ±100 | 46 | 611 | TO-220 |
| TPAL1331J2KR1K | 2K | ±5% | ±100 | 46 | 611 | TO-220 |
| TPAL1331J3KR1K | 3K | ±5% | ±100 | 46 | 611 | TO-220 |
| TPAL1331J6KR1K | 6K | ±5% | ±100 | 46 | 611 | TO-220 |
| TPAL1331J21KR1K | 21K | ±5% | ±100 | 46 | 611 | TO-220 |
Version Change Log
| Version | Date | Change Content | Auditor |
|---|---|---|---|
| V1 | 2023/12/16 | New product release | LWW |
| V2 | 2024/07/15 | Updated product pulse curves | LWW |
Disclaimer
All product information is subject to change without notice. Shenzhen Kai Bu Electronics Co., Ltd. disclaims all liability for errors, inaccuracies, or omissions. Product specifications do not extend or amend purchase terms and conditions. Kai Bu Electronics makes no warranties, representations, or guarantees except as expressly stated. To the maximum extent permitted by law, Kai Bu Electronics disclaims all liability for product use, including special, indirect, or incidental damages, and all implied warranties. Product recommendations are based on typical needs; customers are responsible for verifying suitability for specific applications. Always obtain the latest version of product information from resistor.today. This agreement does not grant any license to intellectual property. Products are not intended for life-support applications unless explicitly stated. Trademarks mentioned may belong to third parties.
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