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HomeProductsResistorsChip Resistor - Surface MountAT0805BRD07820KL
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AT0805BRD07820KL - YAGEO

Manufacturer Part Number
AT0805BRD07820KL
Manufacturer
Yageo
Allelco Part Number
98D-AT0805BRD07820KL
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
44,952 pcs available, New & Original
Parts Description
RES 820K OHM 0.1% 1/8W 0805
Package
0805
Data sheet
AT0805BRD07820K.pdf
RoHs Status
 
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In stock: 44952
  • 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

AT0805BRD07820KL Tech Specifications
YAGEO - AT0805BRD07820KL technical specifications, attributes, parameters and parts with similar specifications to YAGEO - AT0805BRD07820KL

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 820 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
Moisture Sensitivity Level (MSL) 1 (Unlimited)
ECCN EAR99
HTSUS 8533.21.0030

Frequently Asked Questions(FAQ)

What makes the AT0805BRD07820KL suitable for automotive applications versus standard 0805 resistors?
The AT0805BRD07820KL is qualified to AEC-Q200 automotive standards and incorporates anti-sulfur coating, which protects against corrosion in harsh underhood environments where hydrogen sulfide exposure can degrade conventional resistor films. The thin-film construction combined with moisture resistance (MSL 1) ensures stable operation across the full automotive temperature range of -55°C to 155°C, making it suitable for engine control modules, sensor conditioning circuits, and power distribution networks where reliability under thermal cycling is critical.
How does the ±0.1% tolerance of the AT0805BRD07820KL impact precision analog circuit design compared to standard ±1% resistors?
The AT0805BRD07820KL tolerance of ±0.1% reduces the initial accuracy spread from ±8.2 kOhms (at ±1%) to ±820 Ohms across a production batch. This tighter tolerance eliminates the need for post-assembly trimming in gain-setting networks, transimpedance amplifiers, and precision current-sense applications. For a transimpedance amplifier where the AT0805BRD07820KL sets feedback impedance, the tolerance directly translates to ±0.1% gain error without requiring laser trimming or component selection.
Why is the temperature coefficient of ±25ppm/°C specified for the AT0805BRD07820KL, and how does it affect circuit stability?
The ±25ppm/°C temperature coefficient of the AT0805BRD07820KL reflects thin-film resistor technology's inherent drift with temperature. Over the -55°C to 155°C operating range, the 820 kOhm resistance will shift by approximately ±4.1 kOhms total. This is critical for integrator time constants, filter cutoff frequencies, and bias networks where 0.5% resistance change can noticeably alter circuit behavior. Applications requiring drift below 25ppm/°C should consider zero-TCR networks or temperature-compensated designs using the AT0805BRD07820KL as the primary element.
Can the AT0805BRD07820KL be used in high-reliability medical or aerospace applications, or is it limited to automotive use?
While the AT0805BRD07820KL meets AEC-Q200 automotive qualification, it is not certified to aerospace (AS9100) or medical device (ISO 13485) standards. Aerospace applications typically require MIL-PRF-55182 or equivalent qualification with documented failure rates and extended temperature screening. Medical applications may require biocompatibility documentation and traceability not provided by automotive qualification. However, the AT0805BRD07820KL's MSL 1 rating and thin-film stability make it suitable for industrial measurement and control systems requiring high accuracy without aerospace-specific reliability demands.
What is the practical power dissipation limit for the AT0805BRD07820KL in a 3.3V logic gate signal conditioning circuit?
The AT0805BRD07820KL is rated at 0.125W (1/8W) continuous power dissipation. At 3.3V logic levels, a DC current of approximately 4 microamps flows through the 820 kOhm resistor, dissipating only 13.2 microWatts—well below the rated capacity. However, if the AT0805BRD07820KL is used in a 5V signal path with continuous current, dissipation reaches 30.5 microWatts, still safe. The concern arises in high-frequency transient circuits or current-limiting applications where peak power can briefly exceed steady-state calculations; thermal modeling with PCB copper area and ambient temperature is required when approaching 50+ milliwatts in confined layouts.
How does the thin-film construction of the AT0805BRD07820KL differ functionally from thick-film or wirewound alternatives at 820 kOhms?
Thin-film technology used in the AT0805BRD07820KL deposits a resistive metal-alloy layer on a ceramic substrate, enabling tight tolerances (±0.1%) and low parasitic inductance. Wirewound 820 kOhm resistors offer superior power handling but exhibit inductance that degrades high-frequency performance above 1 MHz, making them unsuitable for precision integrators or transimpedance stages. Thick-film 820 kOhm resistors are cheaper but typically ±5% tolerance with higher noise (200 µV/V typical). The AT0805BRD07820KL balances accuracy, frequency response, and package density—critical for mixed-signal boards where high-impedance bias networks occupy minimal board area.
Is the AT0805BRD07820KL susceptible to electrostatic discharge (ESD) or latch-up concerns in gate-drive or sensor interface circuits?
The AT0805BRD07820KL, as a passive resistor, has no semiconductor junctions and therefore no ESD latch-up risk inherent to the component itself. However, when used as a series protection element in sensor inputs or gate-drive paths, the AT0805BRD07820KL provides series impedance that limits discharge current but does not suppress voltage spikes. For ESD-sensitive interfaces, the AT0805BRD07820KL should be paired with a parallel TVS diode or clamp to ground, with the combined impedance determining protection effectiveness. A 820 kOhm series resistor alone is inadequate for direct I/O protection; it functions as a current-limiting element in a protective network design.
What solder reflow profile and MSL drying requirements apply to the AT0805BRD07820KL in high-volume manufacturing?
The AT0805BRD07820KL carries MSL 1 (Moisture Sensitivity Level 1), meaning unlimited floor life without drying requirements—the component can be exposed to ambient humidity indefinitely without moisture uptake risk. Standard SAC305 lead-free reflow profiles (peak 260°C for 10–20 seconds) are appropriate. However, extended time above 150°C (>60 seconds) in humid environments can still cause internal corrosion; best practice is to bake the reel at 125°C for 24 hours after extended storage in tropical climates. The anti-sulfur coating of the AT0805BRD07820KL also resists corrosion during reflow, reducing the risk of opens or shifts during thermal cycling.
How does the AT0805BRD07820KL compare in cost and performance to the more common ±1% 0805 resistor for precision divider networks?
A standard ±1% 0805 resistor costs approximately 40–60% less per unit than the AT0805BRD07820KL, but precision divider networks (e.g., 10:1 attenuators or reference scaling) require matched pair selection or laser trimming when using ±1% parts. The AT0805BRD07820KL eliminates this secondary selection cost and simplifies assembly—a 820 kOhm divider using AT0805BRD07820KL paired resistors requires no binning or calibration. Over a production run of 10,000 units, the labor saved in eliminator trimming or matched-pair screening often offsets the per-unit cost premium of AT0805BRD07820KL thin-film resistors.
What noise performance should be expected from the AT0805BRD07820KL in ultra-low-noise transimpedance amplifier (TIA) designs?
The AT0805BRD07820KL, being a thin-film resistor, exhibits noise levels of approximately 50–80 nV/√Hz at 1 kHz—significantly lower than thick-film equivalents (200+ nV/√Hz). In a transimpedance configuration where the AT0805BRD07820KL serves as feedback, Johnson noise alone contributes √(4kTR) ≈ 5.7 pV/√Hz RMS at room temperature across the 820 kOhm value. However, at high impedance, dielectric absorption in the capacitance associated with the AT0805BRD07820KL footprint becomes comparable to resistor noise; careful PCB layout with low-ESR bypass capacitance and shielded traces is necessary to realize the theoretical noise advantage.
Can the AT0805BRD07820KL withstand rapid thermal cycling from -55°C to 155°C without mechanical failure or resistance shift?
The AT0805BRD07820KL is designed for automotive thermal cycling but not screened for accelerated thermal cycling beyond normal use. Standard reliability testing (AEC-Q200) includes cycling from -40°C to 125°C, not the full -55°C to 155°C range. Extended cycling (500+ cycles) at the extremes may cause micro-cracking in the substrate or lead frame, particularly if thermal ramp rates exceed 5°C/minute. In aerospace-grade applications requiring verified thermal cycling data to -55°C/+155°C, the AT0805BRD07820KL should be qualified in-house or a military-specified resistor should be selected instead.
What is the leakage current behavior of the AT0805BRD07820KL at elevated temperatures, and does it affect high-impedance bias networks?
Thin-film resistors like the AT0805BRD07820KL exhibit minimal leakage current (typically <1 pA) because they lack semiconductor junctions. However, surface contamination or moisture bridging between terminations can introduce microleakage paths. At 155°C, the AT0805BRD07820KL substrate resistance may drop slightly, but the effect is negligible compared to organic insulation degradation. In high-impedance bias networks (e.g., op-amp input biasing using 820 kOhm pull-ups), the PCB contamination and humidity become the dominant leakage source, not the AT0805BRD07820KL itself. Maintaining PCB cleanliness with conformal coating is more critical than resistor selection in these circuits.
How should the AT0805BRD07820KL be specified in a bill of materials (BOM) to ensure correct sourcing and prevent substitution with incompatible alternatives?
The full part number AT0805BRD07820KL must be specified in the BOM with explicit callout of the ±0.1% tolerance, thin-film construction, and AEC-Q200 rating. Simply specifying '820K 0805 resistor' risks receiving thick-film alternatives with ±5% tolerance that fail precision circuit requirements. Supplier notes should reference 'YAGEO AT series, thin-film, AEC-Q200 qualified' to block generic substitutions. In design-in documentation, specify tolerance and temperature coefficient ranges explicitly: 820 kOhm ±0.1%, ±25ppm/°C maximum, to ensure procurement avoids cheaper alternatives that appear functionally equivalent but degrade circuit performance.

Parts with Similar Specifications

The three parts on the right have similar specifications to YAGEO AT0805BRD07820KL

Product Attribute AT0805BRD0782KL AT0805BRD07806KL AT0805BRD0782K5L AT0805BRD07820RL
Part Number AT0805BRD0782KL AT0805BRD07806KL AT0805BRD0782K5L AT0805BRD07820RL
Manufacturer YAGEO YAGEO YAGEO YAGEO
Series - - - -
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Size / Dimension - - - -
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Tolerance - - - -
Features - - - Simultaneous Sampling
Height - Seated (Max) - - - -
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Composition - - - -
Power (Watts) - - - -
Resistance - - - -
Temperature Coefficient - - - -
Number of Terminations - - - -
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Failure Rate - - - -
Ratings - - - -

AT0805BRD07820KL Datasheet PDF

Download AT0805BRD07820KL pdf datasheets and YAGEO documentation for AT0805BRD07820KL - YAGEO.

Datasheets
AT Series, Automotive.pdf

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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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    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.

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    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
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    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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2.00kg-3.00kg USD$50.00 - USD$100.00
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YAGEO

AT0805BRD07820KL

YAGEO
98D-AT0805BRD07820KL

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