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RC2012F3744CS Equivalent & Substitute Parts
Part Overview
The RC2012F3744CS is a 3.74 MOhms ±1% 0.125W chip resistor manufactured by Samsung Electro-Mechanics in the 0805 (2012 Metric) package. This thick film, moisture-resistant component operates across -55°C to 155°C and is ROHS3 compliant. The part is currently active in production with 883 pieces available in stock. Substitute parts are identified to provide alternative sourcing options when the primary manufacturer part becomes unavailable or when supply chain requirements necessitate qualified alternatives.
Substiute Parts
Key Parameters
| Parameter | Value | Significance for Substitution |
|---|---|---|
| Resistance Value | 3.74 MOhms | Must match exactly |
| Tolerance | ±1% | Must match or be tighter |
| Power Rating | 0.125W (1/8W) | Must match or exceed |
| Package Type | 0805 (2012 Metric) | Must match for PCB compatibility |
| Composition | Thick Film | Determines electrical characteristics |
| Temperature Coefficient | ±100ppm/°C | Must match or be lower |
| Operating Temperature Range | -55°C to 155°C | Must meet or exceed application requirements |
| Moisture Sensitivity Level | MSL 1 (Unlimited) | Determines handling and storage requirements |
| RoHS Compliance | ROHS3 Compliant | Required for regulated applications |
Substitute Part Grouping Explanation
Substitution eligibility for the RC2012F3744CS is determined by strict equivalence across the following critical parameters:
Electrical Parameters (Non-negotiable):
- Resistance value: 3.74 MOhms (exact match required)
- Tolerance: ±1% (substitute must not exceed this tolerance)
- Power rating: 0.125W minimum (equal or higher acceptable)
- Temperature coefficient: ±100ppm/°C (equal or lower acceptable)
- Operating temperature range: -55°C to 155°C (must encompass or exceed)
Mechanical Parameters (Non-negotiable):
- Package: 0805 (2012 Metric) - required for PCB footprint compatibility
- Composition: Thick Film - determines frequency response and noise characteristics
- Terminations: 2 (standard for chip resistors)
Compliance Parameters:
- RoHS3 compliance required
- MSL 1 rating acceptable
- REACH unaffected status acceptable
The CRCW08053M74FKEA from Vishay Dale meets all substitution criteria and is qualified as a direct equivalent.
Parameter Comparison
| Parameter | RC2012F3744CS (Samsung) | CRCW08053M74FKEA (Vishay Dale) | Match Status |
|---|---|---|---|
| Resistance | 3.74 MOhms | 3.74 MOhms | Exact Match |
| Tolerance | ±1% | ±1% | Exact Match |
| Power Rating | 0.125W (1/8W) | 0.125W (1/8W) | Exact Match |
| Package | 0805 (2012 Metric) | 0805 (2012 Metric) | Exact Match |
| Composition | Thick Film | Thick Film | Exact Match |
| Temperature Coefficient | ±100ppm/°C | ±100ppm/°C | Exact Match |
| Operating Temperature | -55°C to 155°C | -55°C to 155°C | Exact Match |
| Moisture Sensitivity Level | MSL 1 (Unlimited) | MSL 1 (Unlimited) | Exact Match |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | Compliant |
| Size / Dimension | 0.079" L x 0.049" W (2.00mm x 1.25mm) | 0.079" L x 0.049" W (2.00mm x 1.25mm) | Exact Match |
| Height - Seated (Max) | 0.026" (0.66mm) | 0.020" (0.50mm) | Compatible (Vishay lower profile) |
| Number of Terminations | 2 | 2 | Exact Match |
Engineering Selection Recommendations
Primary Part: RC2012F3744CS (Samsung Electro-Mechanics)
Use this part when Samsung supply is available and cost is not a primary constraint. The part is active in production with adequate inventory (883 pieces in stock).
Substitute Part: CRCW08053M74FKEA (Vishay Dale)
This part qualifies as a direct substitute based on electrical and mechanical parameter equivalence. The CRCW08053M74FKEA carries AEC-Q200 automotive qualification, which provides additional reliability assurance for applications requiring automotive-grade components. The lower seated height (0.020" vs 0.026") is mechanically compatible with standard 0805 PCB layouts. Inventory availability is significantly higher (20,055 pieces), supporting supply chain continuity. Both parts are ROHS3 compliant and carry MSL 1 ratings.
Selection between these parts should be based on:
- Availability and lead time requirements
- Cost differential
- Automotive qualification requirements (AEC-Q200 preferred for automotive applications)
- Supplier relationship and logistics considerations
Frequently Asked Questions (FAQ)
Q: Can CRCW08053M74FKEA replace RC2012F3744CS in all applications?
A: Yes. Both parts are electrically and mechanically equivalent across all critical parameters: 3.74 MOhms ±1%, 0.125W power rating, 0805 package, ±100ppm/°C temperature coefficient, and -55°C to 155°C operating range. The CRCW08053M74FKEA has a lower seated height (0.020" vs 0.026"), which is compatible with standard 0805 PCB designs.
Q: What is the significance of AEC-Q200 qualification on the Vishay part?
A: AEC-Q200 is an automotive industry standard qualification that certifies component reliability under automotive operating conditions. This qualification is relevant only if your application requires automotive-grade components. For non-automotive applications, both parts are functionally equivalent.
Q: Are there any moisture sensitivity concerns with these parts?
A: No. Both parts carry MSL 1 (Unlimited) ratings, indicating they have unlimited shelf life and require no special moisture control during storage or handling.
Q: Will the lower height of the Vishay part cause PCB assembly issues?
A: No. The Vishay part's seated height of 0.020" is within standard 0805 component tolerances and is compatible with automated PCB assembly equipment designed for 0805 packages.
Q: Are both parts RoHS compliant?
A: Yes. Both RC2012F3744CS and CRCW08053M74FKEA are ROHS3 compliant and suitable for applications requiring lead-free components.
Q: What is the tolerance difference between these parts?
A: There is no tolerance difference. Both parts are specified at ±1%, meeting identical precision requirements.
Q: Can I mix these parts in the same production batch?
A: Yes. Since both parts are electrically and mechanically equivalent with identical electrical specifications, they can be used interchangeably in the same circuit design and PCB layout.
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