RK73B2ATTD912J KOA Speer Resistor (Resistor Chip) In Stock
RK73B2ATTD912J is a KOA thick-film surface-mount resistor in an 0805 case with a 9.1 kΩ resistance value, ±5% tolerance, 0.25 W rated power, and ±200 ppm/°C temperature coefficient. It measures 2 mm x 0.5 mm and meets RoHS and REACH compliance requirements. Available in tape-and-reel packaging for automated PCB assembly with worldwide shipping.
- Manufacturer
- KOA Speer
- Package
- Resistor Chip
- Pin Count
- 2
- Lifecycle
- ACTIVE
- Datasheet
- RK73B2ATTD912J Datasheet PDF
- Category
- Resistor
- Price
- From $0.0069(MOQ 1)
- Temp Range
- -55.0°C to 155.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of RK73B2ATTD912J?
- 9.1 kΩ thick-film resistor in compact 0805 (2 mm x 0.5 mm) surface-mount package for high-density PCBs
- 0.25 W power rating with ±5% tolerance suitable for general-purpose signal conditioning and biasing
- ±200 ppm/°C temperature coefficient ensuring stable resistance across typical -55°C to +155°C operating ranges
- RoHS and REACH compliant Pb-free construction for global regulatory compliance
What is RK73B2ATTD912J used for?
The RK73B2ATTD912J is a general-purpose thick-film chip resistor well-suited for pull-up/pull-down networks, voltage dividers, and current limiting in consumer electronics, industrial control PCBs, and IoT sensor modules. Its 0805 footprint and 0.25 W rating accommodate automated SMT assembly lines at high placement speeds. The ±200 ppm/°C drift makes it appropriate for non-precision biasing applications where temperature variation from -55°C to +155°C is expected.
What are the specifications of RK73B2ATTD912J?
| Pbfree Code | Yes |
| Reach Compliance Code | Compliant |
| YTEOL | 12 |
| Construction | Rectangular |
| JESD-609 Code | e3 |
| Mounting Feature | SURFACE MOUNT |
| Package Height | 0.5mm |
| Package Length | 2mm |
| Package Shape | RECTANGULAR PACKAGE |
| Package Style | SMT |
| Package Width | 1.25mm |
| Packing Method | TR, Punched Paper, 7 Inch |
| Rated Power Dissipation (P) | 0.25W |
| Rated Temperature | 70°C |
| Reference Standard | AEC-Q200, IEC60115-8 |
| Resistance | 9100Ω |
| Resistor Type | FIXED RESISTOR |
| Size Code | 0805 |
| 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 | 150V |
| 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 |
Where can I find the RK73B2ATTD912J datasheet?
RK73B2ATTD912J Datasheet DownloadOfficial datasheet from KOA Speer
What are equivalent replacements for RK73B2ATTD912J?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How does the ±200 ppm/°C temperature coefficient of the RK73B2ATTD912J affect resistance in a wide-temperature industrial design?
At ±200 ppm/°C, the RK73B2ATTD912J 9.1 kΩ resistor drifts by up to ±1.82 Ω per degree Celsius. Over a 100°C operating range from -40°C to +85°C, the total resistance shift can reach ±182 Ω, which is a 2% change on top of the ±5% initial tolerance. Designers should account for this in precision voltage divider or bias network calculations for industrial-grade circuits.
For a 3.3 V logic pull-up network, how much current does the RK73B2ATTD912J source when the line is pulled low?
With a 9.1 kΩ resistance and a 3.3 V pull-up supply, the RK73B2ATTD912J sources approximately 0.36 mA when the driven line is pulled to ground. Power dissipation in this state is about 1.2 mW, well within the 0.25 W (250 mW) rated limit, providing a large safety margin for standard I2C or GPIO pull-up applications.
When should an engineer select the 0805 package of the RK73B2ATTD912J over a smaller 0402 resistor for a PCB layout?
The 0805 package (2 mm x 1.25 mm) of the RK73B2ATTD912J is preferred over 0402 when manual rework or hand soldering is required, as its larger pad area and 0.5 mm height improve pick-and-place reliability at speeds below 30,000 CPH. It also handles 0.25 W power dissipation versus the typical 0.063 W of a 0402, making it suitable for resistors in higher-current bias paths of 5 mA or more.
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Why Buy from FindMyChip
About KOA Speer
KOA Speer is a leading electronic component manufacturer. FindMyChip sources KOA Speer ICs directly from authorized China distributors, offering competitive pricing and reliable stock.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.0184 | $0.02 |
| 250+ | $0.0115 | $2.88 |
| 273+ | $0.0115 | $3.14 |
| 500+ | $0.0097 | $4.84 |
| 1000+ | $0.0080 | $8.00 |
| 1740+ | $0.0069 | $12.01 |
In Stock · 24h Response · Worldwide Shipping
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