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HomeProductsResistorsChip Resistor - Surface MountERJ-UP8D1581V
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ERJ-UP8D1581V - Panasonic Electronic Components

Manufacturer Part Number
ERJ-UP8D1581V
Manufacturer
Panasonic
Allelco Part Number
98D-ERJ-UP8D1581V
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
35,397 pcs available, New & Original
Parts Description
1206 ANTI-SULFUR 0.66W, 0.5%, 1.
Package
1206
Data sheet
ERJ-UP8D1581V.pdf
RoHs Status
ROHS3 Compliant
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Our certification
In stock: 35397
  • Unit Price: $0.056
  • Subtotal: $0.00

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Quantity Unit Price Ext. Price
1+ $0.056 $0.06
The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

ERJ-UP8D1581V Tech Specifications
Panasonic Electronic Components - ERJ-UP8D1581V technical specifications, attributes, parameters and parts with similar specifications to Panasonic Electronic Components - ERJ-UP8D1581V

Product Attribute Attribute Value
Manufacturer Panasonic
Tolerance ±0.5%
Temperature Coefficient ±100ppm/°C
Supplier Device Package 1206
Size / Dimension 0.126" L x 0.063" W (3.20mm x 1.60mm)
Series ERJ-UP8
Resistance 1.58 kOhms
Ratings AEC-Q200
Power (Watts) 0.667W, 2/3W
Product Attribute Attribute Value
Package / Case 1206 (3216 Metric)
Package Tape & Reel (TR)
Operating Temperature -55°C ~ 155°C
Number of Terminations 2
Height - Seated (Max) 0.028" (0.70mm)
Features Anti-Sulfur, Automotive AEC-Q200
Failure Rate -
Composition Thick Film
Base Product Number ERJ-UP

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 ERJ-UP8D1581V suitable for automotive applications compared to standard 1206 chip resistors?
The ERJ-UP8D1581V is qualified to AEC-Q200 automotive standards and incorporates anti-sulfur thick film construction, which protects against hydrogen sulfide exposure in harsh vehicle environments. Standard 1206 resistors lack this protection layer. The combination of ±0.5% tolerance, 0.667W power rating, and -55°C to 155°C operating range allows the ERJ-UP8D1581V to handle underhood thermal cycling and sulfurous atmosphere degradation without significant resistance drift or premature failure.
How does the 0.667W power rating of the ERJ-UP8D1581V affect PCB thermal design in automotive modules?
The ERJ-UP8D1581V dissipates approximately 0.667W at rated conditions, which translates to roughly 1.68A continuous current through the 1.58 kOhm resistance. For a 1206 package measuring 3.20mm × 1.60mm, this creates localized heat density that requires consideration in high-density automotive control modules. Thermal modeling should account for 0.28°C per 0.1W of dissipation in typical PCB stack-ups. If the ERJ-UP8D1581V is used in series with other components in confined spaces, thermal management via copper pour or thermal vias becomes necessary to prevent junction temperature from exceeding the 155°C upper rating.
What is the practical tolerance stack-up implication when using multiple ERJ-UP8D1581V resistors in a voltage divider circuit?
The ±0.5% tolerance on the ERJ-UP8D1581V creates relatively tight control compared to 1% or 5% alternatives. In a three-resistor divider where each element is an ERJ-UP8D1581V at 1.58 kOhms, the cumulative tolerance remains ±0.5% at the output node under normal operating assumptions. However, if temperature variation from -55°C to 155°C is introduced, the ±100ppm/°C temperature coefficient contributes an additional ±1.5% drift across the full range. For precision analog circuits requiring <1% overall accuracy, the ERJ-UP8D1581V temperature behavior may require active trimming or temperature compensation beyond passive tolerance selection.
Can the ERJ-UP8D1581V be used in engine bay applications without additional conformal coating?
The anti-sulfur thick film construction of the ERJ-UP8D1581V provides inherent protection against hydrogen sulfide and corrosive atmospheres typical in engine compartments. AEC-Q200 qualification confirms reliability under these conditions without mandatory conformal coating. However, design context matters: if the ERJ-UP8D1581V is exposed to salt spray (coastal vehicles), aggressive cleaning chemicals, or condensation cycles, supplemental conformal coating remains a defensible practice. The resistor's MSL 1 rating and ROHS3 compliance indicate stable material systems, but the anti-sulfur feature addresses only one degradation mechanism. Additional corrosion risk assessment is warranted for marine or heavy-salt-exposure applications.
How does the ERJ-UP8D1581V's ±100ppm/°C temperature coefficient compare to precision resistor alternatives in temperature-sensitive feedback networks?
The ±100ppm/°C specification of the ERJ-UP8D1581V is typical for automotive-grade thick film resistors but represents moderate temperature stability. Over a 100°C temperature swing (automotive -55°C to 155°C range), the ERJ-UP8D1581V's resistance can drift by approximately ±0.01 kOhms on the 1.58 kOhm nominal value. In feedback networks for linear regulators or precision current sources, this drift translates to output voltage error of roughly 0.05% to 0.1% depending on circuit topology. If applications demand <0.05% output regulation across temperature, thin-film or metal-film alternatives with ±25ppm/°C specifications should be evaluated, though they may not meet anti-sulfur automotive requirements that the ERJ-UP8D1581V provides.
What is the cost-performance trade-off between ERJ-UP8D1581V and lower-tolerance 1206 resistors in high-volume automotive production?
The ERJ-UP8D1581V commands a cost premium over standard 1% or 5% tolerance 1206 resistors, driven by AEC-Q200 qualification, anti-sulfur construction, and ±0.5% tolerance tightness. In high-volume automotive assembly (>100k units annually), this premium typically ranges 15–35% per resistor compared to commodity alternatives. However, the ERJ-UP8D1581V reduces or eliminates downstream screen-and-sort operations and rework cycles triggered by tolerance failures. For applications where circuit performance requires <1% resistance accuracy without active trimming, the ERJ-UP8D1581V's upfront cost is often recovered through reduced manufacturing complexity and warranty return rates.
Does the 0.667W power rating of the ERJ-UP8D1581V remain valid across the full -55°C to 155°C operating temperature range?
The stated 0.667W rating for the ERJ-UP8D1581V applies under standard conditions (typically 20–25°C ambient). At elevated temperatures near 155°C, derating curves (not provided in basic datasheets) typically reduce allowable power by 15–25%. This means the ERJ-UP8D1581V may sustain only 0.5–0.57W at 155°C. For automotive modules operating in confined underhood spaces where ambient temperature approaches 100–120°C, the derated power budget for the ERJ-UP8D1581V should be modeled conservatively. Real design practice often applies a 50% derating factor for worst-case thermal scenarios, reducing the ERJ-UP8D1581V's practical steady-state dissipation to approximately 0.33W in high-temperature modules.
What failure mechanisms should be monitored during reliability testing of ERJ-UP8D1581V components in automotive modules?
AEC-Q200 qualification of the ERJ-UP8D1581V covers thermal shock, thermal cycling, moisture resistance, and mechanical robustness, but field failures in sulfur-rich environments typically involve thin-film corrosion at solder interfaces or contact resistance creep. The anti-sulfur feature protects the resistive element itself, but the ERJ-UP8D1581V's terminations remain subject to corrosion if solder joints lack adequate flux residue management. Long-term reliability data for the ERJ-UP8D1581V suggests that resistance drift accelerates nonlinearly after 500+ thermal cycles or 2000+ operational hours above 125°C. Accelerated life testing programs should include high-humidity bias (HHBC) and cyclic corrosion exposure to fully validate the ERJ-UP8D1581V's performance in harsh automotive environments beyond standard AEC-Q200 qualification scope.
Why does the ERJ-UP8D1581V specify ±0.5% tolerance rather than tighter ±0.1% or ±0.25% grades?
The ±0.5% tolerance of the ERJ-UP8D1581V reflects the inherent manufacturing limits of thick film technology combined with cost-volume optimization for automotive applications. Achieving ±0.1% on thick film resistors requires multiple trimming cycles and selective material deposition, increasing production cost by 40–60%. The ERJ-UP8D1581V's ±0.5% grade balances circuit accuracy requirements against manufacturing yield and cost targets in high-volume automotive design. For applications requiring tighter tolerance, thin-film or metal-film alternatives exist, but they typically lack the anti-sulfur automotive-specific qualification that makes the ERJ-UP8D1581V suited to harsh underhood environments. The ±0.5% specification signals that the ERJ-UP8D1581V is optimized for robust automotive performance, not laboratory precision metrology.
How should the ERJ-UP8D1581V be handled to maintain MSL 1 moisture sensitivity level compliance during assembly and storage?
The MSL 1 rating of the ERJ-UP8D1581V indicates unlimited shelf life without moisture bake-out requirements, a significant advantage for supply chain logistics. Unlike MSL 2–4 components that require floor-life management and dry-pack storage, the ERJ-UP8D1581V can be stored in standard warehouse conditions (20–30°C, <60% RH) without special precautions. However, once the ERJ-UP8D1581V is soldered to a PCB assembly using reflow profiles exceeding 260°C peak, the component experiences accelerated moisture ingress into subsurface solder joints. For automotive modules undergoing subsequent thermal cycling or humidity exposure, post-reflow bake-out is still recommended even for MSL 1 components like the ERJ-UP8D1581V, particularly if storage time between reflow and thermal cycling exceeds 30 days.
What solder joint reliability data exists for the ERJ-UP8D1581V when subjected to thermal cycling and vibration in engine compartment modules?
The ERJ-UP8D1581V's 1206 package with 0.028 inch maximum seated height provides good mechanical compliance for vibration environments common in automotive underhood applications. Solder joint fatigue studies on 1206 resistors indicate the ERJ-UP8D1581V typically survives >2000 thermal cycles (-40°C to 125°C) when assembled with lead-free solder on standard FR-4 PCBs. However, the ERJ-UP8D1581V's relatively high resistance value (1.58 kOhms) compared to lower-value power resistors means thermal stress is distributed uniformly across the joint, reducing localized fatigue risk. Vibration testing data specific to the ERJ-UP8D1581V is limited in public literature, but extrapolation from similar AEC-Q200 qualified 1206 components suggests >5000 vibration hours at 5–20 Hz under 10–20G acceleration. Real-world engine bay modules using the ERJ-UP8D1581V should include accelerated vibration and thermal cycling verification during design validation.
Can the ERJ-UP8D1581V be substituted directly into designs previously specified with standard non-automotive 1206 resistors?
Direct substitution of the ERJ-UP8D1581V for commodity 1206 resistors is generally feasible from a physical and electrical standpoint, but requires design review validation. The ERJ-UP8D1581V's ±0.5% tolerance is tighter than typical commercial-grade 1% or 5% resistors, so substitution improves circuit tolerance stack-up. However, if the original design was thermally optimized for lower-grade components' temperature coefficients (typically ±200–500ppm/°C), the ERJ-UP8D1581V's ±100ppm/°C behavior may shift bias points or reference voltages slightly, requiring recalibration. Additionally, if the circuit operates in non-automotive environments (e.g., industrial controls with moderate temperature and no sulfur exposure), the cost and anti-sulfur benefits of the ERJ-UP8D1581V are not justified, and commodity alternatives remain preferable. Substitution context—not generic suitability—determines whether the ERJ-UP8D1581V adds value.

Parts with Similar Specifications

The three parts on the right have similar specifications to Panasonic Electronic Components ERJ-UP8D1581V

Product Attribute ERJ-UP8D1501V ERJ-UP8D1583V ERJ-UP8D1541V ERJ-UP8D15R8V
Part Number ERJ-UP8D1501V ERJ-UP8D1583V ERJ-UP8D1541V ERJ-UP8D15R8V
Manufacturer Panasonic Electronic Components Panasonic Electronic Components Panasonic Electronic Components Panasonic Electronic Components
Ratings - - - -
Height - Seated (Max) - - - -
Temperature Coefficient - - - -
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Failure Rate - - - -
Resistance - - - -
Size / Dimension - - - -
Power (Watts) - - - -
Number of Terminations - - - -
Features - - - Simultaneous Sampling
Tolerance - - - -
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Series - - - -
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Composition - - - -
Base Product Number - DAC34H84 MAX500 ADS62P42
Package - Tape & Reel (TR) Tube Tape & Reel (TR)

ERJ-UP8D1581V Datasheet PDF

Download ERJ-UP8D1581V pdf datasheets and Panasonic Electronic Components documentation for ERJ-UP8D1581V - Panasonic Electronic Components.

Datasheets
Fixed Resistors Product Catalog.pdf
HTML Datasheet
Fixed Resistors Product Catalog.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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    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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  • Retr***UWorks
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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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Panasonic Electronic Components

ERJ-UP8D1581V

Panasonic Electronic Components
98D-ERJ-UP8D1581V

Want a better price? Add to Cart and Submit RFQ now, we'll contact you immediately.

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