RK73B1ETTP104J KOA Speer Resistor (Resistor Chip) In Stock
KOA Speer RK73B1ETTP104J is a thick film SMD chip resistor with 100k ohm resistance and 5% tolerance rated at 1/16W. Its ultra-compact 0402 package (1.0 x 0.5 mm) and RoHS-compliant Pb-free construction suit high-density PCB designs. Ideal for pull-up/pull-down networks, voltage dividers, and bias circuits in mobile, IoT, and consumer electronics.
- Manufacturer
- KOA Speer
- Package
- Resistor Chip
- Pin Count
- 2
- Lifecycle
- ACTIVE
- Datasheet
- RK73B1ETTP104J 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
- 100k ohm thick film resistor in miniature 0402 SMD package (1.0 mm x 0.5 mm x 0.35 mm) for high-density PCB layouts
- 1/16W power rating with 5% tolerance providing reliable high-impedance signal path performance in low-power designs
- RoHS-compliant, Pb-free, REACH-compliant construction meeting global environmental and safety regulations
Applications
The KOA Speer RK73B1ETTP104J 100k ohm SMD resistor is extensively used in smartphone motherboards, wearable devices, and IoT sensor nodes where high-impedance pull-up and pull-down networks are required in minimal board space. Its 0402 footprint enables dense component placement on multilayer PCBs for audio amplifiers, MEMS sensor bias circuits, and digital input conditioning. The Pb-free construction makes it suitable for consumer and industrial applications demanding strict compliance with RoHS and REACH environmental standards.
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 | 100000Ω |
| Resistor Type | FIXED RESISTOR |
| Size Code | 0402 |
| Surface Mount | YES |
| Technology | METAL GLAZE/THICK FILM |
| Temperature Coefficient | 200ppm/°C |
| Terminal Finish | Matte Tin (Sn) - with Nickel (Ni) barrier |
| 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 resistance value and power rating does the KOA Speer RK73B1ETTP104J offer for high-impedance circuit applications?
The KOA Speer RK73B1ETTP104J provides a 100k ohm resistance with 5% tolerance and a 1/16W power rating. This high-impedance value is well suited for pull-up resistors on I2C buses, voltage divider networks for ADC input scaling, and bias resistors in MEMS sensor circuits where minimal current draw and compact 0402 footprint are equally important.
How does the 0402 package of the RK73B1ETTP104J compare to 0603 resistors for space-constrained designs?
The RK73B1ETTP104J in a 0402 package measures only 1.0 mm x 0.5 mm x 0.35 mm, compared to the 1.6 mm x 0.8 mm footprint of a 0603 resistor. This roughly 4x smaller land area allows engineers to increase component density significantly on multilayer PCBs, critical for miniaturized wearables, smartphones, and IoT modules where every square millimeter of board space matters.
When should a designer choose the RK73B1ETTP104J over a 1% tolerance variant for pull-up resistor applications?
For standard digital pull-up applications on I2C or SPI buses, the 5% tolerance of the RK73B1ETTP104J is entirely adequate since the exact resistance value between roughly 95k ohm and 105k ohm does not affect logic-level signaling. Choosing this 5% part over a 1% precision variant reduces per-unit cost while maintaining full functional performance, making it the preferred choice for high-volume consumer electronics production.
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