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SMM02040C8250FB000
Vishay Beyschlag/Draloric/BC Components
RES 825 OHM 1% 1/4W MELF 0204
6235 Pcs New Original In Stock
825 Ohms ±1% 0.25W, 1/4W Chip Resistor MELF, 0204 Anti-Sulfur, Automotive AEC-Q200, Pulse Withstanding Thin Film
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5.0 / 5.0
- (429 Ratings)
SMM02040C8250FB000
Product Overview
13008279
DiGi Electronics Part Number
SMM02040C8250FB000-DGManufacturer
Vishay Beyschlag/Draloric/BC Components
SMM02040C8250FB000
Description
RES 825 OHM 1% 1/4W MELF 0204Inventory
6235 Pcs New Original In Stock
825 Ohms ±1% 0.25W, 1/4W Chip Resistor MELF, 0204 Anti-Sulfur, Automotive AEC-Q200, Pulse Withstanding Thin Film
Quantity
Minimum 1
Minimum 1
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SMM02040C8250FB000 Technical Specifications
Category
Chip Resistor - Surface Mount
Packaging
Tape & Reel (TR)
Series
SMM0204
Packaging
Tape & Reel (TR)
Part Status
Active
Resistance
825 Ohms
Tolerance
±1%
Power (Watts)
0.25W, 1/4W
Composition
Thin Film
Features
Anti-Sulfur, Automotive AEC-Q200, Pulse Withstanding
Temperature Coefficient
±50ppm/°C
Operating Temperature
-55°C ~ 125°C
Package / Case
MELF, 0204
Supplier Device Package
Mini MELF
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
SMM02040C8250FB000-DG
Alternative Parts
View DetailsPART NUMBER
MANUFACTURER
QUANTITY AVAILABLE
DiGi PART NUMBER
UNIT PRICE
SUBSTITUTE TYPE
MMA02040C8250FB300
Vishay Beyschlag/Draloric/BC Components
13931
MMA02040C8250FB300-DG
0.0091
MFR Recommended
SMM02040C8250FB300
Vishay Beyschlag/Draloric/BC Components
3131
SMM02040C8250FB300-DG
0.0092
Parametric Equivalent
Reviews
5.0/5.0-(Show up to 5 Ratings)
грудня 02, 2025
我第一次購買就對DiGi Electronics的專業程度留下了深刻印象，整個過程都很順利。
грудня 02, 2025
Fast processing and shipping, highly recommended for urgent orders.
грудня 02, 2025
Their prices are unbeatable for the level of quality and packaging they provide.
грудня 02, 2025
The service team is friendly, professional, and always eager to assist.
грудня 02, 2025
Post-sale assistance is thorough and highly effective.
грудня 02, 2025
I appreciated how quickly my orders were processed and shipped, showing their excellent logistics efficiency.
грудня 02, 2025
Post-purchase support has been outstanding, with knowledgeable and friendly staff.
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Frequently Asked Questions (FAQ)
What are the key reliability risks when using the SMM02040C8250FB000 in automotive under-the-hood applications, and how does its AEC-Q200 qualification mitigate them?
The SMM02040C8250FB000 is AEC-Q200 qualified, which means it has passed rigorous stress testing for temperature cycling, humidity, and mechanical shock—critical for automotive under-the-hood environments. Key reliability risks include sulfur contamination and thermal cycling fatigue. The SMM02040C8250FB000's anti-sulfur construction prevents sulfide formation on nickel barrier layers, common in engine compartments, while its thin film design and MELF packaging offer superior stability under thermal cycling. To further mitigate risks, ensure PCB layout allows for stress relief in high-vibration areas and avoid using non-AEC-Q200-compliant alternatives like standard thick-film MELFs in these applications.
How does the SMM02040C8250FB000 compare to the MMA02040C8250FB300 in high-pulse surge applications, and when should I choose one over the other?
Both the SMM02040C8250FB000 and MMA02040C8250FB300 are pulse-withstanding thin-film MELF resistors with similar electrical specs, but the SMM02040C8250FB000 offers tighter long-term stability and is preferred in high-reliability automotive systems. The MMA02040C8250FB300 is functionally equivalent but may differ in terminal plating or test flow. Choose the SMM02040C8250FB000 when AEC-Q200 compliance and sulfur resistance are mandatory—especially in safety-critical or long-lifecycle designs—while the MMA02040C8250FB300 can be considered for cost-sensitive, non-safety systems with similar pulse demands. Always verify pulse energy profiles using the manufacturer’s derating curves for reliable performance.
Can the SMM02040C8250FB000 replace a thick-film chip resistor in a high-precision voltage divider circuit, and what design trade-offs should I consider?
Yes, the SMM02040C8250FB000 can effectively replace thick-film chip resistors in precision voltage dividers due to its ±1% tolerance and ±50ppm/°C temperature coefficient—significantly better than typical thick-film resistors (±200ppm/°C or worse). However, MELF packaging requires specialized pick-and-place equipment and wave solder processes, increasing assembly complexity over flat chip resistors. Additionally, optical inspection is harder due to the cylindrical shape. To ensure stability, pair the SMM02040C8250FB000 with a matched MELF in the divider and minimize local heat sources to prevent thermal gradients that could unbalance the ratio.
What are the thermal management considerations when operating the SMM02040C8250FB000 near its 125°C maximum temperature in a sealed enclosure?
When operating the SMM02040C8250FB000 near 125°C in a sealed enclosure, derating is critical—its maximum 0.25W rating assumes ideal heat dissipation. In confined spaces, internal temperature rise can push the resistor beyond its limits even at moderate loads. To manage thermal risk, derate power to 50–60% of rated value (0.125–0.15W max), use thermal vias near pads if on a multilayer board, and orient the SMM02040C8250FB000 horizontally to promote natural convection. Monitor ambient temperature at the board level, not just enclosure air, as localized heating around power components can exceed measurements.
Why is the SMM02040C8250FB000 preferred over standard 0204 resistors in industrial sensor designs, and what failure modes does it prevent?
The SMM02040C8250FB000 is preferred in industrial sensor designs due to its thin-film precision, anti-sulfur construction, and AEC-Q200 reliability—key in harsh environments with high humidity, chemical exposure, or pollution. Standard 0204 resistors often lack sulfur resistance, leading to open-circuit failures from corroded internal electrodes. The SMM02040C8250FB000 mitigates this with a protective barrier layer. Additionally, its ±50ppm/°C TCR ensures stable gain or reference voltage over temperature, reducing sensor drift. Use conformal coating and avoid placing near high-sulfur materials like rubber gaskets to maximize lifetime.
Quality Assurance (QC)
DiGi ensures the quality and authenticity of every electronic component through professional inspections and batch sampling, guaranteeing reliable sourcing, stable performance, and compliance with technical specifications, helping customers reduce supply chain risks and confidently use components in production.
SMM02040C8250FB000 CAD Models
Vishay Beyschlag/Draloric/BC Components SMM02040C8250FB000 PCB symbols & footprints
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