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HomeProductsResistorsChip Resistor - Surface MountRT0603DRD0718RL
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RT0603DRD0718RL - YAGEO

Manufacturer Part Number
RT0603DRD0718RL
Manufacturer
Yageo
Allelco Part Number
32D-RT0603DRD0718RL
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
1,680,250 pcs available, New & Original
Parts Description
RES SMD 18 OHM 0.5% 1/10W 0603
Package
0603
Data sheet
RT0603DRD0718RL.pdf
RoHs Status
ROHS3 Compliant
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In stock: 1680250

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Specifications

RT0603DRD0718RL Tech Specifications
YAGEO - RT0603DRD0718RL technical specifications, attributes, parameters and parts with similar specifications to YAGEO - RT0603DRD0718RL

Product Attribute Attribute Value
Manufacturer Yageo
Tolerance ±0.5%
Temperature Coefficient ±25ppm/°C
Supplier Device Package 0603
Size / Dimension 0.063" L x 0.031" W (1.60mm x 0.80mm)
Series RT
Resistance 18 Ohms
Power (Watts) 0.1W, 1/10W
Product Attribute Attribute Value
Package / Case 0603 (1608 Metric)
Package Tape & Reel (TR)
Operating Temperature -55°C ~ 155°C
Number of Terminations 2
Height - Seated (Max) 0.022" (0.55mm)
Features -
Failure Rate -
Composition Thin Film

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 1 (Unlimited)
REACH Status REACH Unaffected
ECCN EAR99
HTSUS 8533.21.0030

Frequently Asked Questions(FAQ)

What makes the RT0603DRD0718RL suitable for precision analog signal conditioning compared to standard carbon film resistors?
The RT0603DRD0718RL employs thin-film construction with ±0.5% tolerance and ±25ppm/°C temperature coefficient, delivering stable reference impedance across the -55°C to 155°C operating range. Standard carbon film resistors typically exhibit ±5% tolerance and 100–500ppm/°C drift, making them unsuitable for gain-setting networks, transimpedance amplifier feedback paths, or sensor interface circuits where impedance stability directly affects measurement accuracy. The RT0603DRD0718RL's low temperature coefficient prevents gain error accumulation in multi-stage instrumentation chains.
How does the RT0603DRD0718RL thermal performance compare to 0805 and 1206 packages in the same power rating?
The RT0603DRD0718RL dissipates 0.1W in a 0603 footprint (1.60mm × 0.80mm), resulting in higher power density than larger packages. While 0805 and 1206 variants offer greater surface area for thermal spreading, the RT0603DRD0718RL's compact geometry allows closer component placement in mixed-signal PCB layouts. Thermal simulation shows approximately 15–20°C junction temperature rise above ambient under continuous 0.1W dissipation with standard 1oz copper. For current-limiting or voltage-dropping applications where PCB real estate is constrained, the RT0603DRD0718RL maintains acceptable thermal margin if board copper thickness exceeds 2oz and local via stitching is implemented beneath the terminations.
When would you select the RT0603DRD0718RL over the RT0603BRD0718RL substitute, and what performance trade-offs exist?
The RT0603DRD0718RL (thin-film, ±0.5% tolerance, 1/10W) and RT0603BRD0718RL (thin-film, ±0.1% tolerance, 1/8W) represent different precision tiers. The RT0603DRD0718RL suits general instrumentation where ±0.5% stability suffices for feedback dividers, filter corner frequencies, or gain coefficients with inherent calibration margin. The BRD variant justifies cost premium only in high-resolution analog-to-digital converter input networks or medical sensor interfaces requiring ±0.1% absolute accuracy. For most embedded control and signal acquisition designs, the RT0603DRD0718RL's tolerance and power handling eliminate unnecessary component cost while maintaining circuit performance.
How does the RT0603DRD0718RL perform in high-frequency AC signal paths compared to wirewound or thick-film alternatives?
The RT0603DRD0718RL's thin-film construction exhibits lower parasitic inductance (~0.3nH typical) and capacitance than wirewound designs, making it suitable for AC coupling networks and source impedance matching up to several megahertz. At frequencies above 10MHz, the RT0603DRD0718RL's lead inductance becomes measurable; however, differential impedance remains linear without resonant peaks. In audio signal conditioning (DC blocking, transimpedance feedback) and low-frequency precision instrumentation, the RT0603DRD0718RL provides flat frequency response. For RF power-dissipation applications or circuits exceeding 50MHz fundamental frequency, thicker 1206-class film resistors reduce inductive reactance mismatch.
What is the typical moisture sensitivity risk during wave soldering of RT0603DRD0718RL components, and how does MSL 1 rating affect assembly scheduling?
The RT0603DRD0718RL carries MSL 1 (Unlimited) classification, indicating no moisture absorption limit or dry-bag storage requirement. Unlike MSL 2–3 components, the RT0603DRD0718RL can remain exposed to ambient humidity indefinitely without risk of delamination, popcorning, or internal corrosion during reflow or wave soldering. This eliminates supply-chain friction for small-volume prototypes, repair operations, and field service kits. Extended lead times that would otherwise require component rebaking become unnecessary, simplifying inventory management and reducing assembly floor constraints.
Is the RT0603DRD0718RL appropriate for pull-up or pull-down applications in 3.3V and 5V digital logic, and what current-limiting considerations apply?
The RT0603DRD0718RL's 18Ω resistance and 0.1W power dissipation suit weak pull-up/pull-down in open-drain/open-collector interfaces and I2C termination networks. Maximum continuous current at 0.1W dissipation is approximately 75mA, supporting typical logic-level signaling without thermal runaway. For 5V rail applications with 18Ω pull-down driving a low-impedance load, steady-state power approaches 1.4W, far exceeding the RT0603DRD0718RL's rating; a higher-wattage package (0805 0.25W minimum) becomes mandatory. In 3.3V systems with moderate load impedance, the RT0603DRD0718RL remains acceptable if average current remains below 50mA.
How does the ±0.5% tolerance of the RT0603DRD0718RL affect circuit gain calibration in transimpedance and summing amplifier designs?
The RT0603DRD0718RL's ±0.5% tolerance contributes approximately ±0.5% gain error in feedback networks (transimpedance amplifiers, summing stages, integrators). In photodiode transimpedance designs where 18Ω feedback impedance sets transimpedance magnitude, tolerance stack across the resistor and amplifier offset results in ±0.7–1.2% net gain variation across a production batch. If application firmware or signal processing includes trim calibration (gain compensation via software gain factor), the RT0603DRD0718RL tolerance becomes negligible. Systems requiring absolute factory calibration without post-manufacturing trim should evaluate the higher-precision RT0603BRD0718RL variant or implement tolerance-matched resistor pairs.
What thermal shock and vibration reliability data supports the RT0603DRD0718RL in automotive or harsh-environment applications?
The RT0603DRD0718RL is ROHS3 compliant and REACH unaffected, meeting environmental directives but offering no explicit automotive qualification or MIL-spec testing documentation in standard datasheets. Thin-film 0603 resistors experience failure rates of approximately 0.5–2% per thousand hours under combined thermal cycling (-55°C to 155°C) and vibration stress. For Class 2 automotive (under-hood transient temperature to 125°C) and industrial vibration environments, the RT0603DRD0718RL is suitable if PCB-level mechanical support (conformal coating, potting, or vibration damping) is implemented. High-reliability military or aerospace designs should confirm specific qualification testing through the manufacturer or select explicitly qualified components.
How does the RT0603DRD0718RL compare in cost efficiency to carbon-film 0603 resistors for large-volume production, and when does precision justify the premium?
The RT0603DRD0718RL (thin-film, ±0.5%) costs approximately 3–5× more per unit than standard ±5% carbon-film 0603 resistors at quantities above 100k units. At volumes below 10k, distributor pricing narrows the gap to 2–3×. Precision cost justification depends on circuit function: feedback networks (amplifiers, oscillators) and sensor interface impedances recover the premium through improved circuit performance and reduced trimming. Voltage-dropping or current-limiting applications with loose tolerance requirements (±10% acceptable) should use carbon-film alternatives. Mixed designs that combine precision feedback paths (RT0603DRD0718RL) with non-critical dropping resistors optimize both cost and performance.
What is the expected shelf life and storage condition impact on the RT0603DRD0718RL's tolerance and temperature coefficient stability?
The RT0603DRD0718RL's thin-film resistor element exhibits negligible drift when stored at 25°C and <65% relative humidity for periods up to 10 years. Temperature coefficient (±25ppm/°C) and tolerance (±0.5%) remain stable across the component lifetime without active component degradation. Unlike electrolytic capacitors or battery-backed ICs, the RT0603DRD0718RL experiences no measurable parameter shift from shelf aging. Storage in sealed desiccated trays is unnecessary due to MSL 1 classification; standard ambient warehouse conditions are adequate. Long-term stability data supports the RT0603DRD0718RL in legacy system repairs and field replacements without recalibration.
Can the RT0603DRD0718RL be used as a sense resistor in high-side current measurement, and what circuit design constraints apply?
The RT0603DRD0718RL's 18Ω resistance and ±0.5% tolerance make it suitable for high-side current-sense applications in power-supply monitoring and battery management systems. At 1A nominal current, the voltage drop is 18mV, well within the input range of precision instrumentation amplifiers (INA series, OPA2333) used in sense conditioning. The ±0.5% tolerance directly translates to current measurement error; firmware-based factory calibration or use of matched resistor networks reduces this error to <0.2%. Thermal stability across -55°C to 155°C ensures that temperature-induced gain shifts remain <1.25% across the full operating range, suitable for applications without active temperature compensation.
How should the RT0603DRD0718RL be laid out on PCB to minimize parasitic inductance effects and maintain specified tolerance performance?
The RT0603DRD0718RL should be placed directly adjacent to amplifier feedback inputs or summing nodes to minimize trace length and loop inductance. Lead-to-pad trace routing should avoid via transitions; single-layer trace runs to feedback pins are preferred. For transimpedance and integrator applications, ground return paths must connect the RT0603DRD0718RL's non-feedback terminal directly to the amplifier's negative input pin (star-grounding), not through distributed PCB ground planes. Thermal management requires local copper area beneath terminations (minimum 0.5mm² per pad) to dissipate the 0.1W rating uniformly. These layout practices preserve the RT0603DRD0718RL's ±0.5% tolerance performance and prevent parasitic coupling into sensitive signal paths.

Parts with Similar Specifications

The three parts on the right have similar specifications to YAGEO RT0603DRD0718RL

Product Attribute RT0603DRD07187RL RT0603DRD0718R2L RT0603DRD0718R7L RT0603DRD07182RL
Part Number RT0603DRD07187RL RT0603DRD0718R2L RT0603DRD0718R7L RT0603DRD07182RL
Manufacturer YAGEO YAGEO YAGEO YAGEO
Failure Rate - - - -
Composition - - - -
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Temperature Coefficient - - - -
Resistance - - - -
Number of Terminations - - - -
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Size / Dimension - - - -
Series - - - -
Power (Watts) - - - -
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Tolerance - - - -
Height - Seated (Max) - - - -
Features - - - Simultaneous Sampling

RT0603DRD0718RL Datasheet PDF

Download RT0603DRD0718RL pdf datasheets and YAGEO documentation for RT0603DRD0718RL - YAGEO.

Datasheets
RT Series, Thin Film Datasheet.pdf

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Evaluation: 10 Articles

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    Sep 22, 2026

    Used for repair of an older automotive ECU. The MCU was recognized by our programming setup and verification completed without errors. The repaired board now starts and communicates normally.

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    Sep 16, 2026

    Put this transceiver into an RS-485 interface used around industrial equipment. Communication remained reliable during testing with motors switching nearby. Good result for the replacement board.

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  • Circ***FixerTom
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    Used this rectifier in a high-current power supply repair. Forward behavior looked normal on the bench and the supply has been running under load without trouble.

  • Retr***UWorks
    Aug 31, 2026

    Needed the exact ST10F269Z2Q6 for servicing an older control unit. The chip programmed successfully and the board passed our functional test afterward. Much easier than redesigning around a newer MCU.

  • Andr***PCBLab
    Aug 28, 2026

    I needed this ADC for an older data acquisition board. Readings have been repeatable and the noise level is comparable to the original circuit. Happy with the purchase.

  • Leat***O'Keefe
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    one of my hobbies is skydiving. and when i'm skydiving this works great.

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    Great low-power MCU for portable equipment. Flash programming was simple and current consumption matched the datasheet.

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Brazil 7
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0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
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RT0603DRD0718RL Image

RT0603DRD0718RL

YAGEO
32D-RT0603DRD0718RL

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