SMR003RXJ000 ROHM Semiconductor Resistor (Other) In Stock
The ROHM Semiconductor SMR003RXJ000 is an ultra-compact 0.05 Ω fixed chip resistor in a 0.3 mm x 0.15 mm SMT package with 0.11 mm height. Designed for high-density current sensing applications, it delivers precision resistance in an extremely small footprint. Available from authorized distributors with worldwide shipping.
- Manufacturer
- ROHM Semiconductor
- Package
- Other
- Pin Count
- 2
- Lifecycle
- OBSOLETE
- Datasheet
- SMR003RXJ000 Datasheet PDF
- Category
- Resistor
- Temp Range
- -55.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of SMR003RXJ000?
- Ultra-low 0.05 Ω resistance in a miniature 0.3 mm x 0.15 mm x 0.11 mm SMT chip package enables dense PCB placement for current sensing
- Fixed resistor chip construction with SMT package style and 7-inch embossed tape reel packaging supports automated high-volume pick-and-place assembly
- REACH-compliant materials and precision chip construction ensure reliable performance in consumer, industrial, and portable electronic designs
What is SMR003RXJ000 used for?
The SMR003RXJ000 is designed for precision current sensing and power management circuits in ultra-compact portable devices such as wearables, IoT sensors, and mobile accessories. Its 0.05 Ω resistance and tiny 0.3 mm x 0.15 mm footprint allow integration into high-density PCB layouts where space is at a premium. It is also used in battery management systems and DC-DC converter feedback networks requiring low-resistance, surface-mount components.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| Country of Origin | Philippines, Thailand |
Where can I find the SMR003RXJ000 datasheet?
SMR003RXJ000 Datasheet DownloadOfficial datasheet from ROHM Semiconductor
What are equivalent replacements for SMR003RXJ000?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How does the 0.05 Ω resistance value of the SMR003RXJ000 support current sensing circuit design?
A 0.05 Ω shunt resistance produces a measurable voltage drop, such as 50 mV at 1 A, while minimizing power dissipation in the sensing path. This makes the SMR003RXJ000 ideal for current monitoring in battery chargers, motor controllers, and power management ICs where accuracy and low thermal impact across the 0.3 mm x 0.15 mm chip are both required.
What PCB assembly method does the SMR003RXJ000 use, and what reel format is it supplied in?
The SMR003RXJ000 uses SMT (surface-mount technology) assembly and is supplied in 7-inch embossed tape reel (TR) packaging. Its 0.3 mm x 0.15 mm x 0.11 mm dimensions require fine-pitch pick-and-place equipment, and the embossed reel format supports automated assembly lines handling high-volume production runs efficiently.
When should a designer consider the SMR003RXJ000 over a larger 0402 or 0201 shunt resistor?
The SMR003RXJ000's package at 0.3 mm x 0.15 mm is smaller than a standard 0201 (0.6 mm x 0.3 mm), making it preferable when PCB real estate is critically limited, such as in wearable health monitors or hearing aids. Designers choose it when the 0.05 Ω value and ultra-small footprint take priority over the easier solderability of larger packages.
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Why Buy from FindMyChip
About ROHM Semiconductor
ROHM Semiconductor is a leading electronic component manufacturer. FindMyChip sources ROHM Semiconductor ICs directly from authorized China distributors, offering competitive pricing and reliable stock.
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“Their engineering team helped us find a pin-compatible alternative when our original MCU went EOL.”
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