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HomeProductsResistorsChip Resistor - Surface MountPE2512FKM7W0R04L
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PE2512FKM7W0R04L - YAGEO

Manufacturer Part Number
PE2512FKM7W0R04L
Manufacturer
Yageo
Allelco Part Number
98D-PE2512FKM7W0R04L
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
49,965 pcs available, New & Original
Parts Description
RES 0.04 OHM 1% 2W 2512
Package
2512
Data sheet
-
RoHs Status
ROHS3 Compliant
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Our certification
In stock: 49965
  • Unit Price: $0.234
  • Subtotal: $0.00

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Quantity Unit Price Ext. Price
1+ $0.234 $0.23
The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

PE2512FKM7W0R04L Tech Specifications
YAGEO - PE2512FKM7W0R04L technical specifications, attributes, parameters and parts with similar specifications to YAGEO - PE2512FKM7W0R04L

Product Attribute Attribute Value
Manufacturer Yageo
Tolerance ±1%
Temperature Coefficient ±75ppm/°C
Supplier Device Package 2512
Size / Dimension 0.250" L x 0.125" W (6.35mm x 3.18mm)
Series PE
Resistance 40 mOhms
Ratings AEC-Q200
Power (Watts) 2W
Product Attribute Attribute Value
Package / Case 2512 (6432 Metric)
Package Tape & Reel (TR)
Operating Temperature -55°C ~ 170°C
Number of Terminations 2
Height - Seated (Max) 0.035" (0.89mm)
Features Automotive AEC-Q200, Current Sense, Moisture Resistant
Failure Rate -
Composition Metal Foil

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 PE2512FKM7W0R04L suitable for automotive current sensing applications compared to standard resistors?
The PE2512FKM7W0R04L is specifically designed for current sensing in automotive environments through its metal film construction and AEC-Q200 qualification. The 40 mOhm resistance combined with ±1% tolerance enables precise current measurement across a wide operating range of -55°C to 170°C. Unlike general-purpose resistors, the PE2512FKM7W0R04L's metal film composition delivers stable resistance behavior under temperature variations (±75ppm/°C), which is critical for accurate current-to-voltage conversion in battery management systems, motor controllers, and power distribution modules where measurement accuracy directly affects system safety and performance.
How does the 2W power rating of the PE2512FKM7W0R04L impact thermal design in high-current automotive circuits?
The PE2512FKM7W0R04L is rated for 2W continuous power dissipation, which determines the maximum safe current it can handle without exceeding thermal limits. At 40 mOhms, this translates to approximately 7 amperes RMS continuous current capacity (calculated as √(2W / 0.04Ω) ≈ 7A). In automotive applications like DC/DC converter bypass or motor phase sensing, the PE2512FKM7W0R04L requires careful PCB thermal coupling through copper pour and via stitching to distribute heat. The 0.250" × 0.125" (2512) footprint provides moderate thermal contact; exceeding 2W dissipation causes resistance drift and potential device failure. Designers must account for pulse current peaks during transient events, which may temporarily exceed the 7A continuous rating.
Why is the ±1% tolerance specification of the PE2512FKM7W0R04L critical for battery management and load-sharing circuits?
Current sensing networks in multi-module battery packs and parallel power stages require matched resistor tolerance to ensure equal current distribution. The PE2512FKM7W0R04L's ±1% tolerance (compared to ±5% standard film resistors) ensures individual sense resistors measure current within 0.4 mOhms of nominal 40 mOhms across production batches. In a 4-module parallel configuration, ±5% tolerance would allow worst-case current imbalance of ~20%, causing uneven aging and thermal stress. The PE2512FKM7W0R04L maintains imbalance under 4% across multiple units, which is acceptable for automotive load-sharing where firmware-based compensation can trim remaining variation. This tolerance grade is essential in systems where resistor mismatch directly translates to cell-to-cell voltage or power imbalance.
What temperature coefficient behavior should designers account for when the PE2512FKM7W0R04L operates across automotive environmental extremes?
The PE2512FKM7W0R04L exhibits ±75ppm/°C temperature coefficient, meaning resistance changes by ±0.0003 mOhms per °C from the 40 mOhm nominal value. Over the full -55°C to 170°C automotive range (225°C span), resistance can drift by approximately ±0.0675 mOhms, or roughly ±0.17% of nominal. While seemingly small, this drift in a 100A sense circuit (with five PE2512FKM7W0R04L devices in parallel) accumulates to ~0.85 mOhms of total error at temperature extremes. Automotive current-sense analog-to-digital converters typically compensate by measuring a temperature reference and applying software correction factors. The PE2512FKM7W0R04L's ±75ppm/°C specification is moderate compared to wirewound resistors (±100ppm/°C) but requires firmware offset adjustment for thermal transient events in underhood or battery enclosure environments.
How does the PE2512FKM7W0R04L's metal film construction differ from thick-film alternatives in high-reliability automotive sensing?
The PE2512FKM7W0R04L employs metal film deposition over ceramic substrate, which delivers superior frequency response, noise characteristics, and long-term stability compared to thick-film paste-based resistors. Metal film construction reduces current noise by approximately 10× over thick-film equivalents, making the PE2512FKM7W0R04L preferable for low-level current sensing where transducer noise must be minimized below the system ADC noise floor. The metal film also exhibits negligible frequency dependence (inductance effects) up to several MHz, unlike thick-film variants that may show ±2–5% resistance variation at switching frequencies. For automotive applications requiring AEC-Q200 reliability (automotive grade qualification), the PE2512FKM7W0R04L's metal film design provides superior performance margins during thermal cycling and vibration exposure.
What is the effective current measurement range when using the PE2512FKM7W0R04L with a 12-bit automotive ADC converter?
Using the PE2512FKM7W0R04L in a 50 mV sense-amplifier configuration yields approximately 1.25A full-scale measurement at unity gain (50mV / 40mOhm = 1.25A). A 12-bit ADC provides 4,096 digital steps, resulting in approximately 0.3 mA per LSB resolution. At lower currents (e.g., 10 mA), quantization error becomes significant relative to the sense voltage (0.4 mV across the PE2512FKM7W0R04L), requiring gain amplification of 10–20× to utilize ADC resolution effectively. Many automotive current-sense ICs use integrated 20–50V/V gain stages to amplify the PE2512FKM7W0R04L voltage drop, extending practical resolution to 1–2 mA levels. Designers must account for amplifier input-referred noise (typically 100–200 µV RMS) when dimensioning the PE2512FKM7W0R04L sense network, as excessive noise obscures the ADC's theoretical resolution advantage.
How should PCB layout be structured to minimize measurement errors introduced by parasitic effects in the PE2512FKM7W0R04L sensing path?
The PE2512FKM7W0R04L's 40 mOhm value and 2512 (6.35mm × 3.18mm) footprint create a low-impedance node susceptible to parasitic coupling. Layout best practices include: (1) kelvin sense connection from the far ends of the PE2512FKM7W0R04L pads to the ADC input, avoiding direct connection through high-current traces where magnetic coupling introduces offset errors; (2) locating the PE2512FKM7W0R04L far from switching nodes and gate-drive circuits to minimize capacitive noise coupling into sense traces; (3) routing sense traces on inner layers or shielded beneath ground planes, as the ±1% tolerance of the PE2512FKM7W0R04L can be undermined by EMI-induced measurement noise exceeding ±0.4 mOhms; (4) ensuring symmetric current distribution through the PE2512FKM7W0R04L by placing via fanning directly beneath both termination pads rather than routing all current through a single trace. Failure to implement kelvin sensing effectively introduces 1–5 mOhms of systematic error, equivalent to 2.5–12% of the nominal PE2512FKM7W0R04L resistance.
What is the expected lifetime and failure mode of the PE2512FKM7W0R04L under sustained 2W dissipation in high-temperature automotive enclosures?
The PE2512FKM7W0R04L is AEC-Q200 qualified, indicating reliability testing at 170°C for 1,000 hours with less than 5% resistance shift. Under continuous 2W operation (junction temperature estimated at ~120°C above ambient in a 50°C underhood environment = 170°C), the PE2512FKM7W0R04L experiences accelerated aging following Arrhenius kinetics. Empirical data suggests approximately 1–2% resistance change per 10,000 operating hours at maximum rated conditions. Primary failure modes include (1) metal film migration or oxidation under temperature cycling, increasing resistance over time; (2) solder joint recrystallization on vibration exposure, causing intermittent contact; (3) subtle delamination of the ceramic substrate from the lead frame in high-humidity storage preceding thermal stress. The PE2512FKM7W0R04L does not exhibit sudden failure but progressive resistance drift, which automotive firmware should monitor through periodic self-test measurements comparing sense readings against known reference circuits.
Can multiple PE2512FKM7W0R04L resistors be reliably paralleled to create lower resistance values for higher-current applications?
Parallel connection of multiple PE2512FKM7W0R04L units for lower resistance (e.g., two units in parallel = 20 mOhms) requires careful attention to current distribution uniformity. The ±1% tolerance of each individual PE2512FKM7W0R04L unit translates to ±1% variation in current division; two units with tolerance spread (39.6 mOhms and 40.4 mOhms) will share current inversely proportional to resistance, introducing ±0.4% imbalance. More critically, temperature coefficient mismatch creates long-term drift: if one PE2512FKM7W0R04L experiences higher thermal coupling to a nearby power stage than another, differential ±75ppm/°C coefficient can introduce >1% current mismatch over thermal transients. Practical designs parallelize two or four PE2512FKM7W0R04L units with individual gate-resistor-driven MOSFET pairs per resistor (rather than direct parallel connection) to enforce active current balancing through firmware control of gate drive timing. Direct paralleling is acceptable only when current mismatch within ±1–2% is tolerable for the specific application.
What distinguishes the PE2512FKM7W0R04L from precision automotive current-sense integrated circuits in terms of cost, flexibility, and system integration trade-offs?
The PE2512FKM7W0R04L as a discrete current-sense resistor costs approximately $0.10–0.25 per unit, compared to $1–5 for integrated current-sense ICs (which include amplification, filtering, and diagnostics). However, the PE2512FKM7W0R04L requires external amplification (operational amplifier ~$0.30–0.50), ADC multiplexing channel (shared or dedicated), and firmware implementation of temperature compensation and error correction. For single or dual-channel sensing in cost-optimized designs, discrete PE2512FKM7W0R04L + op-amp solutions offer flexibility and lower total cost. Conversely, integrated current-sense ICs provide built-in gain, temperature compensation, and fault detection, reducing firmware complexity and PCB area. The PE2512FKM7W0R04L approach suits applications with existing analog signal-conditioning infrastructure and software development resources; integrated solutions are preferred when rapid time-to-market, minimal firmware effort, or multi-channel integration (>4 channels) justify the per-unit cost premium.
How should the PE2512FKM7W0R04L be handled and stored to maintain AEC-Q200 reliability and prevent performance degradation?
The PE2512FKM7W0R04L carries Moisture Sensitivity Level (MSL) 1 rating, indicating unlimited shelf life and moisture immunity—the device can be stored indefinitely at room temperature without desiccant storage or baking requirements. However, automotive manufacturing environments demand electrostatic discharge (ESD) precautions during handling despite the resistor's inherent robustness; shipping in conductive tape-and-reel packaging with grounded component feeder systems prevents latent ESD damage to PCB trace insulation or nearby sensitive components. The PE2512FKM7W0R04L's solder joints are susceptible to corrosion in humid environments if flux residue is not adequately cleaned post-reflow; residual halogenated flux can accelerate tin whisker formation or ionic migration over years of operation. For long-term stock management, the PE2512FKM7W0R04L should be stored in component-grade dry boxes (relative humidity <10%) with silica gel desiccant replaced monthly, even though MSL 1 classification technically permits ambient storage. This precaution protects solder pad oxide films from atmospheric degradation, maintaining solderability margins for manufacturing windows exceeding 12 months.
What measurement compensation techniques should be implemented in firmware when using the PE2512FKM7W0R04L across variable automotive load and thermal conditions?
Real-time software compensation for the PE2512FKM7W0R04L involves (1) temperature-based offset correction: acquire a reference ADC reading at known ambient temperature and apply linear scaling coefficient derived from the ±75ppm/°C specification; (2) offset calibration at system startup: measure zero-current baseline while the PE2512FKM7W0R04L is unpowered or when high-side and low-side current paths are disabled, storing this value as the ADC reference; (3) dynamic gain adjustment: monitor system voltage rail and scale sense current readings by (actual voltage / nominal voltage) to account for resistor temperature changes driven by supply voltage variations. In systems with redundant current sensing, cross-channel correlation checks can detect single-point PE2512FKM7W0R04L failures (resistance open-circuit or parametric drift exceeding ±5% over nominal). Many automotive microcontrollers implement these corrections within 50–100 lines of firmware code executed during periodic current-measurement cycles, making the software overhead minimal relative to the cost savings achieved by using discrete PE2512FKM7W0R04L resistors instead of integrated current-sense ICs.

Parts with Similar Specifications

The three parts on the right have similar specifications to YAGEO PE2512FKM7W0R04L

Product Attribute PE2512FKM7W0R043L PE2512FKM7W0R047L PE2512FKM7W0R045L PE2512FKM7W0R068L
Part Number PE2512FKM7W0R043L PE2512FKM7W0R047L PE2512FKM7W0R045L PE2512FKM7W0R068L
Manufacturer YAGEO YAGEO YAGEO YAGEO
Failure Rate - - - -
Temperature Coefficient - - - -
Number of Terminations - - - -
Tolerance - - - -
Ratings - - - -
Series - - - -
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
Composition - - - -
Size / Dimension - - - -
Height - Seated (Max) - - - -
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Power (Watts) - - - -
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Resistance - - - -
Features - - - Simultaneous Sampling

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PE2512FKM7W0R04L Image

PE2512FKM7W0R04L

YAGEO
98D-PE2512FKM7W0R04L

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

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