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MMA0204MC1804FB300
Vishay Beyschlag/Draloric/BC Components
MMA 0204-50 1% HV BL 1M8
2604 Pcs New Original In Stock
Chip Resistor
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(Ships tomorrow)
*Quantity
Minimum 1
Minimum 1
5.0 / 5.0
- (323 Ratings)
MMA0204MC1804FB300
Product Overview
2032043
DiGi Electronics Part Number
MMA0204MC1804FB300-DGManufacturer
Vishay Beyschlag/Draloric/BC Components
MMA0204MC1804FB300
Description
MMA 0204-50 1% HV BL 1M8Inventory
2604 Pcs New Original In Stock
Chip Resistor
Quantity
Minimum 1
Minimum 1
Purchase and inquiry
Warranty & Returns
How to Order
Shipping & Delivery
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365 - Day Quality Guarantee - Every part fully backed.
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MMA0204MC1804FB300 Technical Specifications
Category
Chip Resistor - Surface Mount
Packaging
Tape & Reel (TR)
Series
*
Product Status
Active
Datasheet & Documents
HTML Datasheet
MMA0204MC1804FB300-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-MMA0204MC1804FB300TR
Standard Package
3,000
Reviews
5.0/5.0-(Show up to 5 Ratings)
Dec 02, 2025
Une excellente expérience client grâce à leur réactivité et leur suivi précis.
Dec 02, 2025
The reliability of DiGi’s logistics significantly boosts my operational confidence.
Dec 02, 2025
The customer support team was very responsive and helped me resolve an issue promptly.
Dec 02, 2025
I appreciate their consistent on-time delivery, which is crucial for my business timelines.
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Frequently Asked Questions (FAQ)
Can the Vishay MMA0204MC1804FB300 resistor be safely used in a high-voltage divider circuit operating at 800V DC, and what derating or layout precautions are necessary to avoid surface tracking or arcing?
The Vishay MMA0204MC1804FB300 is rated for high-voltage applications with a working voltage of up to 350V, as specified in its datasheet. Operating it at 800V DC exceeds its rated capability and introduces significant risk of surface tracking, especially in humid or contaminated environments. To safely handle 800V, you must use multiple resistors in series (e.g., three MMA0204MC1804FB300 units in series for ~540kΩ total) to distribute voltage stress, maintain adequate creepage distance (>8mm), and apply conformal coating. Always perform HASS testing under end-use conditions to validate reliability.
Is the MMA0204MC1804FB300 a suitable drop-in replacement for the Panasonic ERJ-3GEYJ185V in a precision current-sense application on a 48V automotive bus, considering TCR and long-term stability?
No, the MMA0204MC1804FB300 is not a direct performance-equivalent replacement for the Panasonic ERJ-3GEYJ185V in precision current sensing. While both are 1.8MΩ, 1% resistors, the ERJ-3GEYJ185V has a TCR of ±200 ppm/°C and is optimized for low-noise, stable performance in power applications. The MMA0204MC1804FB300, though RoHS-compliant and high-voltage capable, has a typical TCR of ±250 ppm/°C and is designed for general-purpose high-voltage use, not precision sensing. For accurate current measurement on a 48V bus, consider Vishay’s WSL or TNPV series instead, or verify system-level error budgets if substituting.
What are the risks of using the MMA0204MC1804FB300 in a compact PCB layout with adjacent high-voltage traces, and how can parasitic coupling affect signal integrity in a sensor interface?
In dense layouts, the MMA0204MC1804FB300’s 1.8MΩ value makes it highly susceptible to parasitic coupling from adjacent high-voltage traces (>100V), which can induce leakage currents or noise in low-level sensor signals. This is especially critical in analog front-ends or feedback networks. To mitigate risk, maintain at least 5mm clearance from high-potential nodes, use guard rings connected to a stable reference potential, and avoid routing sensitive signals parallel to high-voltage lines. Simulation with field solvers or empirical testing under worst-case bias and humidity is recommended to validate isolation integrity.
Can the MMA0204MC1804FB300 withstand repeated surge events in a telecom power supply input stage, and how does its pulse handling compare to metal oxide varistors or thick-film alternatives?
The MMA0204MC1804FB300 has limited surge capability typical of thin-film chip resistors and is not designed for repeated high-energy transients. While it can handle brief overloads within its pulse power rating (e.g., 100V for 10s), sustained or repetitive surges—common in telecom inputs—can cause resistance drift or open-circuit failure. Unlike metal oxide varistors (MOVs) or specialized surge-rated resistors (e.g., Vishay’s VSR series), it lacks nonlinear clamping behavior. For surge-prone environments, use the MMA0204MC1804FB300 only behind proper TVS protection and consider derating voltage by 50% in mission-critical designs.
How does the moisture sensitivity level (MSL 1) of the MMA0204MC1804FB300 impact assembly reliability in high-humidity environments, and should baking be performed before reflow even though it's labeled 'unlimited'?
Although the MMA0204MC1804FB300 is rated MSL 1 (unlimited floor life), this assumes standard ambient storage and handling. In high-humidity environments (>60% RH), prolonged exposure before assembly can still allow moisture absorption into the encapsulation, risking popcorning during reflow or long-term insulation degradation under high-voltage bias. While baking is not required per JEDEC standards, best practice in harsh environments includes dry storage (<10% RH), use of desiccant packs, and limiting exposure time to <8 hours. For automotive or outdoor applications, implement IPC-J-STD-033 controls to ensure long-term reliability despite the MSL 1 rating.
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.
MMA0204MC1804FB300 CAD Models
Vishay Beyschlag/Draloric/BC Components MMA0204MC1804FB300 PCB symbols & footprints
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