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MMA02040C5109FB300
Vishay Beyschlag/Draloric/BC Components
RES 51 OHM 1% 2/5W MELF 0204
3406 Pcs New Original In Stock
51 Ohms ±1% 0.4W, 2/5W Chip Resistor MELF, 0204 Anti-Sulfur, Automotive AEC-Q200 Thin Film
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5.0 / 5.0
- (165 Ratings)
MMA02040C5109FB300
Product Overview
1084494
DiGi Electronics Part Number
MMA02040C5109FB300-DGManufacturer
Vishay Beyschlag/Draloric/BC Components
MMA02040C5109FB300
Description
RES 51 OHM 1% 2/5W MELF 0204Inventory
3406 Pcs New Original In Stock
51 Ohms ±1% 0.4W, 2/5W Chip Resistor MELF, 0204 Anti-Sulfur, Automotive AEC-Q200 Thin Film
CAD Models - PCB Symbols & Footprints
Quantity
Minimum 1
Minimum 1
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MMA02040C5109FB300 Technical Specifications
Category
Chip Resistor - Surface Mount
Packaging
Tape & Reel (TR)
Series
MMA - Professional
Product Status
Active
Resistance
51 Ohms
Tolerance
±1%
Power (Watts)
0.4W, 2/5W
Composition
Thin Film
Features
Anti-Sulfur, Automotive AEC-Q200
Temperature Coefficient
±50ppm/°C
Operating Temperature
-55°C ~ 155°C
Package / Case
MELF, 0204
Supplier Device Package
0204
Ratings
AEC-Q200
Size / Dimension
0.055" Dia x 0.142" L (1.40mm x 3.60mm)
Height - Seated (Max)
-
Number of Terminations
2
Failure Rate
-
Datasheet & Documents
HTML Datasheet
MMA02040C5109FB300-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
1 (Unlimited)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8533.21.0040
Additional Information
Other Names
749-1459-1
749-1459-2
749-1459-6
Standard Package
3,000
Reviews
5.0/5.0-(Show up to 5 Ratings)
de desembre 02, 2025
Les produits sont fiables et leur prix est très accessible, un vrai plus.
de desembre 02, 2025
DiGi Electronics’ logistics team demonstrated professionalism with swift updates and reliable delivery.
de desembre 02, 2025
Transparent pricing policies demonstrate their commitment to customer satisfaction.
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Frequently Asked Questions (FAQ)
When designing with the Vishay MMA02040C5109FB300 MELF resistor in a high-temperature automotive environment, what are the practical risks of exceeding its 155°C operating limit and how can the anti-sulfur feature mitigate related failures?
Operating the Vishay MMA02040C5109FB300 MELF resistor above 155°C can lead to premature aging of the thin-film element, potentially causing resistance drift beyond its ±1% tolerance and reducing its overall lifespan. While the AEC-Q200 qualification indicates robust design, exceeding thermal limits is not recommended for guaranteed performance. The anti-sulfur feature is crucial for preventing the formation of resistive sulfide layers, which can occur in environments with sulfur compounds. Even at elevated temperatures, the anti-sulfur composition in the MMA02040C5109FB300 helps maintain stable resistance by inhibiting this degradation mechanism, thus improving reliability in harsh automotive applications.
For automotive circuit protection applications where a 51 Ohm, 0.4W resistor is needed, how does the Vishay MMA02040C5109FB300 MELF resistor compare in terms of surge handling and long-term stability against a standard thick-film chip resistor like a Vishay TNPW060351R0BETA?
The Vishay MMA02040C5109FB300 MELF resistor, with its thin-film construction and MELF package, generally offers superior long-term stability and better tolerance over temperature compared to a typical thick-film chip resistor such as the Vishay TNPW060351R0BETA. While both have the same resistance and power rating, the MMA02040C5109FB300's thin-film technology provides a more predictable response to transient surges and less drift over time. For critical automotive applications requiring high precision and reliability under varying conditions, the MMA02040C5109FB300 is the preferred choice due to its inherent material properties and AEC-Q200 qualification, which specifically targets automotive stress levels.
What specific design considerations are critical when integrating the Vishay MMA02040C5109FB300 MELF resistor into a high-frequency circuit to avoid parasitic effects that could impact signal integrity?
When integrating the Vishay MMA02040C5109FB300 MELF resistor into high-frequency circuits, it's essential to minimize parasitic inductance and capacitance. The MELF package itself has lower lead inductance compared to surface-mount components, which is advantageous. However, ensure proper PCB layout by keeping trace lengths connecting to the resistor as short as possible. Also, consider the dielectric properties of the PCB substrate and the proximity of ground planes. For optimal performance above hundreds of MHz, the inherent characteristics of the MMA02040C5109FB300, such as its stable thin-film composition, become crucial for maintaining predictable impedance and minimizing signal reflections or distortions.
In a scenario where a Vishay BC Components CAY16-510J4LF (51 Ohm, 1/4W thick film) resistor needs replacement in a temperature-sensitive automotive sensor circuit, what are the advantages and potential integration challenges of using the Vishay MMA02040C5109FB300 MELF resistor instead?
Replacing a Vishay BC Components CAY16-510J4LF with the Vishay MMA02040C5109FB300 MELF resistor offers significant advantages, especially in temperature-sensitive applications. The MMA02040C5109FB300 boasts a ±50ppm/°C temperature coefficient, far superior to typical thick-film resistors, ensuring greater accuracy across varying temperatures. Its anti-sulfur and AEC-Q200 features also enhance long-term reliability. The primary integration challenge will be the package type: the CAY16 is a standard chip resistor, while the MMA02040C5109FB300 is a MELF (Metal Electrode Leadless Face) resistor. You will need to ensure your PCB has appropriate footprint accommodations for the MELF package, which is cylindrical and typically requires different solder joint geometries than a rectangular chip resistor.
What potential failure modes should design engineers proactively mitigate when using the Vishay MMA02040C5109FB300 MELF resistor in a high-power pulsed application, even though its power rating is 0.4W?
While the Vishay MMA02040C5109FB300 is rated at 0.4W continuous power, high-power pulsed applications introduce different stresses. The primary concern is peak power dissipation during the pulse, which can far exceed the continuous rating, leading to localized overheating and thermal runaway, even if the average power remains within limits. To mitigate this, carefully analyze the pulse width and duty cycle to calculate the peak instantaneous power. Ensure that the thermal management of the PCB around the MMA02040C5109FB300 is sufficient to dissipate this peak energy quickly. Consider over-specifying the resistor or implementing protective circuitry like fast-acting fuses if the pulse energy is a significant risk to the thin-film element's integrity.
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MMA02040C5109FB300 CAD Models
Vishay Beyschlag/Draloric/BC Components MMA02040C5109FB300 PCB symbols & footprints
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