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HomeProductsResistorsChip Resistor - Surface MountAT0805BRD077K68L
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AT0805BRD077K68L - YAGEO

Manufacturer Part Number
AT0805BRD077K68L
Manufacturer
Yageo
Allelco Part Number
98D-AT0805BRD077K68L
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
32,136 pcs available, New & Original
Parts Description
RES SMD 7.68K OHM 0.1% 1/8W 0805
Package
0805
Data sheet
AT0805BRD077K68.pdf
RoHs Status
ROHS3 Compliant
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Our certification
In stock: 32136
  • Unit Price: $0.164
  • Subtotal: $0.00

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Quantity Unit Price Ext. Price
1+ $0.164 $0.16
The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

AT0805BRD077K68L Tech Specifications
YAGEO - AT0805BRD077K68L technical specifications, attributes, parameters and parts with similar specifications to YAGEO - AT0805BRD077K68L

Product Attribute Attribute Value
Manufacturer Yageo
Tolerance ±0.1%
Temperature Coefficient ±25ppm/°C
Supplier Device Package 0805
Size / Dimension 0.079" L x 0.049" W (2.00mm x 1.25mm)
Series AT
Resistance 7.68 kOhms
Ratings AEC-Q200
Power (Watts) 0.125W, 1/8W
Product Attribute Attribute Value
Package / Case 0805 (2012 Metric)
Package Tape & Reel (TR)
Operating Temperature -55°C ~ 155°C
Number of Terminations 2
Height - Seated (Max) 0.024" (0.60mm)
Features Anti-Sulfur, Automotive AEC-Q200, Moisture Resistant
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 AT0805BRD077K68L suitable for automotive applications compared to standard 0805 resistors?
The AT0805BRD077K68L is AEC-Q200 qualified, which means it has undergone rigorous automotive reliability testing including thermal cycling, humidity resistance, and mechanical stress validation. Beyond this certification, the thin-film construction with anti-sulfur coating provides protection against corrosive atmospheric conditions and sulfur-bearing compounds common in automotive environments. The MSL-1 moisture sensitivity rating on the AT0805BRD077K68L also eliminates moisture-related failure modes during board assembly and long-term field operation, making it suitable for underhood and high-humidity exposure scenarios where standard commercial resistors would degrade.
How does the ±0.1% tolerance of the AT0805BRD077K68L impact precision analog circuit design?
The ±0.1% tolerance on the AT0805BRD077K68L represents a 7.68-times improvement over typical 1% thin-film resistors and enables direct use in ratiometric circuits without additional calibration networks. For a 7.68 kOhms nominal value, this tolerance band spans ±7.68 ohms, allowing the AT0805BRD077K68L to be used as a direct replacement in gain-setting resistor networks, transimpedance amplifiers, and precision current-source applications where ratio matching is critical. The ±25 ppm/°C temperature coefficient compounds this stability advantage across the -55°C to 155°C operating range, reducing drift-induced errors in temperature-compensated circuits to approximately ±0.5% over a 100°C temperature span.
Can the AT0805BRD077K68L be reliably used in lead-free reflow processes without degradation?
Yes, the AT0805BRD077K68L is explicitly ROHS3 compliant, confirming compatibility with lead-free solder reflow profiles. The thin-film construction and anti-sulfur coating of the AT0805BRD077K68L provide inherent protection against tin whisker formation and corrosion mechanisms that emerge under lead-free processing conditions. The MSL-1 classification indicates the AT0805BRD077K68L can withstand unlimited moisture exposure pre-reflow without baking, and the 0.125W power rating provides adequate thermal margin during peak reflow temperatures (typically 240–260°C) without risk of thermal shock or solder joint degradation.
How does the AT0805BRD077K68L compare to the RN732ATTD7681D25 substitute in terms of electrical performance?
Both the AT0805BRD077K68L and the RN732ATTD7681D25 are thin-film 7.68 kOhms resistors with ±0.1% tolerance, but they differ in packaging and supply chain implications. The AT0805BRD077K68L arrives in Tape & Reel format optimized for automated assembly, while the RN732ATTD7681D25 variant uses alternative packaging. Electrically, both exhibit identical temperature coefficients (±25 ppm/°C) and meet AEC-Q200 requirements. Selection between the AT0805BRD077K68L and RN732ATTD7681D25 should prioritize your assembly process compatibility and lead-time availability rather than performance differentiation.
What is the practical power dissipation headroom when using the AT0805BRD077K68L in signal conditioning circuits?
The AT0805BRD077K68L is rated for 0.125W continuous dissipation in standard operating conditions. When conducting 10mA through the 7.68 kOhms nominal resistance, actual dissipation reaches 0.768W, which exceeds the nominal rating and requires derated operation or circuit redesign. To maintain safe margin, limit continuous current through the AT0805BRD077K68L to approximately 4mA (0.03W dissipation at nominal value), leaving 75% headroom for surge currents and thermal cycling stress. In high-temperature applications near 155°C ambient, further derate the AT0805BRD077K68L by 50%, reducing practical continuous dissipation to 0.06W to prevent accelerated failure mechanisms.
Why is the anti-sulfur coating on the AT0805BRD077K68L critical for industrial and transportation applications?
Industrial and transportation environments often contain hydrogen sulfide, sulfur dioxide, or reactive sulfur compounds from fuel vapor, engine emissions, or industrial processes. Without protection, these compounds migrate into standard resistor packaging and form sulfide layers on internal electrode surfaces, causing resistance drift and increased noise. The AT0805BRD077K68L incorporates anti-sulfur coating on its thin-film element and terminations, creating a barrier that prevents sulfur compound penetration. For equipment operating in coastal environments or near petrochemical facilities, the AT0805BRD077K68L maintains specified tolerance and temperature coefficient performance over 10+ year lifecycles, whereas uncoated resistors may drift beyond ±0.5% within 2–3 years.
Is the AT0805BRD077K68L appropriate for precision current-measurement circuits in power management applications?
The AT0805BRD077K68L can function in current-sense applications when paired with low-drift operational amplifiers, but several constraints apply. The 7.68 kOhms resistance value generates 0.768V at 100mA sense current, which saturates single-supply amplifiers and requires careful biasing. The ±0.1% tolerance on the AT0805BRD077K68L ensures ratiometric accuracy within ±7.68 ohms, sufficient for current-sense readback accuracies of ±0.5–1% when combined with precision transimpedance stages. However, the ±25 ppm/°C temperature coefficient of the AT0805BRD077K68L introduces approximately ±2.5mV drift per 100°C temperature change in a 100mA measurement, necessitating digital calibration or temperature-compensated firmware in systems requiring ±0.1% current measurement accuracy across the full -55°C to 155°C operating range.
What thermal management considerations apply when the AT0805BRD077K68L is mounted in high-density PCB layouts?
The AT0805BRD077K68L measures 2.00mm × 1.25mm with a maximum seated height of 0.60mm, creating a compact footprint but limited thermal mass. In dense surface-mount arrays where multiple resistors occupy adjacent positions, localized PCB temperatures can rise 20–40°C above ambient due to mutual heating effects. The AT0805BRD077K68L's ±25 ppm/°C temperature coefficient translates to approximately ±1.92 ppm resistance drift per 1°C local temperature rise, cumulative across the device population. For precision applications requiring ±0.1% stability in high-density layouts, implement 3–5mm minimum spacing between the AT0805BRD077K68L and heat-generating components, and consider thermal vias beneath the resistor to conduct localized heat into inner PCB layers.
Can the AT0805BRD077K68L replace 1206-sized precision resistors in space-constrained designs without electrical compromise?
The AT0805BRD077K68L and larger 1206 precision resistors share identical ±0.1% tolerance and ±25 ppm/°C temperature coefficients when both are thin-film construction. The primary trade-off involves thermal performance: the AT0805BRD077K68L dissipates 0.125W maximum in a 2.00mm × 1.25mm footprint, compared to 0.25W in a 1206 package. In circuits where power dissipation remains under 0.05W, the AT0805BRD077K68L substitution is electrically valid and saves approximately 60% PCB area. However, for feedback networks in precision transimpedance amplifiers or gain-setting dividers where thermal stability is prioritized over size, the larger 1206 option provides 3–5°C lower local temperature rise and may justify the layout cost.
How does MSL-1 classification on the AT0805BRD077K68L affect supply chain and storage protocols?
The MSL-1 (Unlimited) moisture sensitivity level on the AT0805BRD077K68L eliminates the need for dry-pack storage, desiccant cartridges, or pre-reflow baking procedures required by MSL-2 and higher components. The AT0805BRD077K68L can be stored in standard warehouse conditions (20–25°C, 40–60% RH) indefinitely without conditioning before assembly, reducing logistics complexity and cost for contract manufacturers handling mixed-MSL component inventories. This advantage becomes economically significant in just-in-time manufacturing environments where the AT0805BRD077K68L can move directly from receiving to assembly lines without intermediate environmental control infrastructure.
What failure modes are most likely to occur in the AT0805BRD077K68L under extended high-temperature stress?
The AT0805BRD077K68L operating range extends to 155°C continuous, but failure mechanisms accelerate exponentially in this regime. Primary degradation occurs through interdiffusion of thin-film elements and termination metals, causing 0.01–0.05% per 1000-hour resistance drift above 140°C. Secondary failure involves moisture absorption at the film-substrate interface during thermal cycling, triggering electrical intermittency. Testing at 155°C for 1000+ hours typically produces 0.5–1% resistance shift on the AT0805BRD077K68L, exceeding the ±0.1% tolerance window. For applications requiring extended 150°C+ operation, verify the AT0805BRD077K68L against published thermal aging curves, or consider derating the circuit to 125°C maximum ambient to preserve ±0.1% accuracy over the component lifetime.
How does the thin-film construction of the AT0805BRD077K68L influence noise performance in audio and precision measurement circuits?
Thin-film resistors, including the AT0805BRD077K68L, exhibit Johnson noise levels approximately 3–6 dB lower than thick-film or wirewound alternatives due to reduced current-path discontinuities and lower temperature coefficient. At 7.68 kOhms, the AT0805BRD077K68L generates approximately 1.2 µV RMS noise density (referenced to 1 Hz bandwidth) across audio frequencies, suitable for preamplifier input networks and precision analog-to-digital converter input stages. The anti-sulfur coating on the AT0805BRD077K68L also prevents contact-resistance noise that emerges when corrosion films form on terminations. For noise-sensitive designs, the AT0805BRD077K68L can be used in parallel with film capacitors to form precision RC filters without introducing low-frequency 1/f noise characteristic of carbon-composition resistors.
What electrical performance should be verified during incoming component inspection of AT0805BRD077K68L tape reels?
Recommended incoming inspection for AT0805BRD077K68L tape reels should include resistance measurement at 23°C ambient on a minimum sample rate of 1 per 10,000 units, verifying the measured value falls within 7.6732–7.6868 kOhms (±0.1% band). Secondary verification involves visual inspection of the AT0805BRD077K68L terminations for consistent solder-wettable coating and absence of crazing or delamination. Long-term reliability can be monitored through accelerated aging: subject sample units of AT0805BRD077K68L to 1000 hours at 155°C and 95% RH, then re-measure resistance to confirm drift remains below ±0.15%. For automotive supply chains, request AEC-Q200 test reports confirming the AT0805BRD077K68L lot performed the full qualification suite including mechanical shock, thermal cycling, and electromigration validation.

Parts with Similar Specifications

The three parts on the right have similar specifications to YAGEO AT0805BRD077K68L

Product Attribute AT0805BRD0776R8L AT0805BRD0776K8L AT0805BRD077K87L AT0805BRD07787KL
Part Number AT0805BRD0776R8L AT0805BRD0776K8L AT0805BRD077K87L AT0805BRD07787KL
Manufacturer YAGEO YAGEO YAGEO YAGEO
Ratings - - - -
Features - - - Simultaneous Sampling
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Resistance - - - -
Temperature Coefficient - - - -
Failure Rate - - - -
Tolerance - - - -
Series - - - -
Power (Watts) - - - -
Composition - - - -
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Size / Dimension - - - -
Number of Terminations - - - -
Height - Seated (Max) - - - -
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad

AT0805BRD077K68L Datasheet PDF

Download AT0805BRD077K68L pdf datasheets and YAGEO documentation for AT0805BRD077K68L - YAGEO.

Datasheets
AT Series, Automotive.pdf

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Customer Reviews

Evaluation: 10 Articles

  • ECUb***h
    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.

  • RS48***ieldTech
    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.

  • Logi***b_Chris
    Sep 8, 2026

    Purchased for a Cyclone III development project. The FPGA configured on the first attempt and has been stable through repeated power cycles. No problems with the I/O we are using.

  • Circ***FixerTom
    Sep 2, 2026

    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
    Aug 20, 2026

    one of my hobbies is skydiving. and when i'm skydiving this works great.

  • Ilen***
    Aug 20, 2026

    This product works considerably well. It secretly improves my basketball by a lot.

  • Indu***ialPower
    Aug 17, 2026

    Installed this IGBT module in a power conversion cabinet. Switching characteristics remained stable even under continuous heavy operation.

  • Nikh***ech
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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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AT0805BRD077K68L Image

AT0805BRD077K68L

YAGEO
98D-AT0805BRD077K68L

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