RK73B1ETTP511J KOA Speer Resistor (Resistor Chip) In Stock
The RK73B1ETTP511J is a surface-mount thick film chip resistor from KOA Speer with a resistance of 510 ohms and ±5% tolerance, rated at 1/16 W power dissipation. It features a compact 0402 package (1.0 mm × 0.5 mm), RoHS-compliant construction, and is suited for general-purpose signal conditioning, voltage divider, and current-limiting circuits in consumer and industrial electronics.
- Manufacturer
- KOA Speer
- Package
- Resistor Chip
- Pin Count
- 2
- Lifecycle
- ACTIVE
- Datasheet
- RK73B1ETTP511J Datasheet PDF
- Category
- Resistor
- Temp Range
- -55.0°C to 155.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 510 ohm thick film resistor with ±5% tolerance for cost-effective general-purpose circuit design
- Ultra-compact 0402 SMD package (1.0 mm × 0.5 mm × 0.35 mm) enabling high-density PCB layouts
- 1/16 W power rating suitable for low-power signal and logic-level applications
- RoHS-compliant and REACH-compliant materials meeting global environmental regulations
- Rectangular chip construction with surface-mount terminations for automated reflow soldering
Applications
The RK73B1ETTP511J is widely used in signal conditioning circuits, pull-up and pull-down resistor networks, and voltage divider chains on consumer electronics and IoT device PCBs. Its compact 0402 footprint makes it a preferred choice for space-constrained designs such as wearables, smartphones, and miniaturized sensor modules. Industrial control boards and communication interface circuits also rely on this part for current limiting and impedance matching at low signal power levels.
Specifications
| Pbfree Code | Yes |
| Reach Compliance Code | Compliant |
| YTEOL | 13 |
| Construction | Rectangular |
| JESD-609 Code | e3 |
| Mounting Feature | SURFACE MOUNT |
| Package Height | 0.35mm |
| Package Length | 1mm |
| Package Shape | RECTANGULAR PACKAGE |
| Package Style | SMT |
| Package Width | 0.5mm |
| Packing Method | TR, Punched Paper, 7 Inch |
| Rated Power Dissipation (P) | 0.1W |
| Rated Temperature | 70°C |
| Reference Standard | AEC-Q200, IEC60115-8 |
| Resistance | 510Ω |
| Resistor Type | FIXED RESISTOR |
| Size Code | 0402 |
| Surface Mount | YES |
| Technology | METAL GLAZE/THICK FILM |
| Temperature Coefficient | 200ppm/°C |
| Terminal Finish | MATTE TIN OVER NICKEL |
| Terminal Shape | WRAPAROUND |
| Tolerance | 5% |
| Working Voltage | 75V |
| Package | Resistor Chip |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8533.21.00.30 |
| Country of Origin | Japan, Mainland China, Malaysia |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the resistance value and tolerance of the RK73B1ETTP511J, and how does this affect circuit accuracy?
The RK73B1ETTP511J has a resistance of 510 ohms with a ±5% tolerance, meaning the actual resistance can range from 484.5 ohms to 535.5 ohms. For precision voltage dividers or bias networks where accuracy matters, designers should consider tighter-tolerance variants such as ±1% (J-suffix to F-suffix). For general pull-up, pull-down, and current-limiting roles at signal levels below 50 mA, the ±5% tolerance is fully adequate.
How much power can the RK73B1ETTP511J safely dissipate in continuous operation?
The RK73B1ETTP511J is rated for 1/16 W (62.5 mW) of continuous power dissipation at 70°C ambient. At 510 ohms and 1/16 W, the maximum continuous current is approximately 11 mA, and the maximum voltage across the resistor is about 5.6 V. Designs that exceed either limit risk thermal degradation of the thick film element, reducing long-term reliability.
Which PCB pad dimensions are recommended for soldering the RK73B1ETTP511J in a reflow process?
The RK73B1ETTP511J uses a standard 0402 footprint with a chip body of 1.0 mm length and 0.5 mm width. IPC-7351 recommends land pads of approximately 0.5 mm × 0.6 mm separated by a 0.5 mm gap for reflow solder assembly. Using a Type 3 solder paste with a peak reflow temperature of 260°C for up to 10 seconds is consistent with the component's rated J-STD-020 reflow profile.
Can the RK73B1ETTP511J replace the Vishay CRCW0402511RFKED or other 0402 510-ohm resistors in a BOM substitution?
Yes, the RK73B1ETTP511J is electrically and mechanically compatible with other 0402-package 510-ohm ±5% thick film resistors such as the Vishay CRCW0402511RFKED and Yageo RC0402JR-07511RL. All share the same 1.0 mm × 0.5 mm footprint, 1/16 W power rating, and J-code ±5% tolerance. Verify the maximum working voltage (typically 50 V for 0402) and temperature coefficient (KOA specifies ±200 ppm/°C) match your application before substituting.
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