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RG2012N-3243-C-T5 Equivalent & Substitute Parts
Part Overview
The RG2012N-3243-C-T5 is a 324 kOhms ±0.25% thin film chip resistor in 0805 (2012 Metric) package rated for 0.125W (1/8W) power dissipation. This component is designed for automotive applications with AEC-Q200 qualification and anti-sulfur construction. The part is currently classified as obsolete, necessitating identification of equivalent active alternatives that maintain electrical and mechanical compatibility while meeting automotive reliability standards.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Resistance | 324 kOhms |
| Tolerance | ±0.25% |
| Power Rating | 0.125W (1/8W) |
| Package | 0805 (2012 Metric) |
| Composition | Thin Film |
| Temperature Coefficient | ±10ppm/°C |
| Operating Temperature Range | -55°C to 155°C |
| Automotive Rating | AEC-Q200 |
| Features | Anti-Sulfur |
| RoHS Status | ROHS3 Compliant |
Substitute Part Grouping Explanation
Substitution of the RG2012N-3243-C-T5 is determined by the following critical parameters that must remain constant across all equivalent parts:
Fixed Parameters (Non-Negotiable):
- Resistance value: 324 kOhms
- Package type: 0805 (2012 Metric)
- Power rating: 0.125W (1/8W)
- Composition: Thin Film
- Temperature coefficient: ±10ppm/°C
- Operating temperature range: -55°C to 155°C
- Automotive rating: AEC-Q200
- Anti-sulfur construction
- RoHS3 compliance
Variable Parameters (Substitution Basis):
- Tolerance: The main part specifies ±0.25%. Substitute parts with tighter tolerances (±0.1% or ±0.05%) are electrically compatible and represent performance upgrades.
- Product status: The main part is obsolete; active alternatives are required for new designs and ongoing production.
- Packaging format: The main part uses cut tape; substitutes use tape and reel (TR) format, which is standard for production environments.
All three substitute parts maintain identical electrical performance characteristics and mechanical compatibility while offering improved tolerance specifications and active product status.
Parameter Comparison
| Parameter | RG2012N-3243-C-T5 (Main) | RG2012N-3243-B-T5 | RG2012N-3243-W-T1 | RG2012N-3243-W-T5 |
|---|---|---|---|---|
| Manufacturer | Susumu | Susumu | Susumu | Susumu |
| Resistance | 324 kOhms | 324 kOhms | 324 kOhms | 324 kOhms |
| Tolerance | ±0.25% | ±0.1% | ±0.05% | ±0.05% |
| Power Rating | 0.125W | 0.125W | 0.125W | 0.125W |
| Package | 0805 (2012 Metric) | 0805 (2012 Metric) | 0805 (2012 Metric) | 0805 (2012 Metric) |
| Composition | Thin Film | Thin Film | Thin Film | Thin Film |
| Temperature Coefficient | ±10ppm/°C | ±10ppm/°C | ±10ppm/°C | ±10ppm/°C |
| Operating Temperature | -55°C to 155°C | -55°C to 155°C | -55°C to 155°C | -55°C to 155°C |
| AEC-Q200 Rating | Yes | Yes | Yes | Yes |
| Anti-Sulfur | Yes | Yes | Yes | Yes |
| Product Status | Obsolete | Active | Active | Active |
| RoHS3 Compliant | Yes | Yes | Yes | Yes |
| Packaging Format | Cut Tape | Tape & Reel (TR) | Tape & Reel (TR) | Tape & Reel (TR) |
Engineering Selection Recommendations
For Direct Replacement (Obsolete Part Transition):
The RG2012N-3243-B-T5 provides the most direct functional equivalent to the RG2012N-3243-C-T5. Both parts maintain identical electrical specifications with the exception of tolerance, where the substitute offers improved precision (±0.1% versus ±0.25%). This part is active in production and available in standard tape and reel packaging suitable for manufacturing environments.
For Enhanced Precision Applications:
The RG2012N-3243-W-T1 and RG2012N-3243-W-T5 represent precision upgrades with ±0.05% tolerance, providing superior accuracy for circuits requiring tighter resistance control. Both parts are active and comply with all automotive and environmental standards applicable to the original component. The distinction between these two parts relates to packaging tape specifications (T1 versus T5 designations), which do not affect electrical performance or mechanical compatibility.
Compliance and Certification:
All substitute parts maintain AEC-Q200 automotive qualification, anti-sulfur construction, RoHS3 compliance, and identical thermal characteristics. Selection among the three substitutes should be based on tolerance requirements of the specific application and packaging format compatibility with production equipment.
Frequently Asked Questions (FAQ)
Q: Can RG2012N-3243-B-T5 be used as a direct replacement for RG2012N-3243-C-T5?
A: Yes. Both parts share identical resistance value (324 kOhms), power rating (0.125W), package type (0805), composition (thin film), temperature coefficient (±10ppm/°C), operating temperature range (-55°C to 155°C), and AEC-Q200 automotive qualification. The RG2012N-3243-B-T5 offers improved tolerance (±0.1% versus ±0.25%), making it a compatible upgrade.
Q: What is the difference between RG2012N-3243-W-T1 and RG2012N-3243-W-T5?
A: Both parts are electrically identical with ±0.05% tolerance and identical mechanical specifications. The difference lies in the tape specification designation (T1 versus T5), which relates to packaging tape characteristics. Both are compatible with standard 0805 component placement equipment.
Q: Are all substitute parts suitable for automotive applications?
A: Yes. All three substitute parts carry AEC-Q200 qualification and anti-sulfur construction, meeting automotive reliability and environmental requirements equivalent to the original RG2012N-3243-C-T5.
Q: Why is the original part listed as obsolete?
A: The RG2012N-3243-C-T5 is classified as obsolete, indicating it is no longer in active production. The three substitute parts are all active products with current inventory availability, making them suitable for new designs and ongoing production requirements.
Q: Can I use a substitute part with tighter tolerance in a circuit designed for ±0.25% tolerance?
A: Yes. A component with tighter tolerance (±0.1% or ±0.05%) will perform within the specifications of a circuit designed for ±0.25% tolerance. The substitute will provide equal or superior performance in terms of resistance accuracy.
Q: Are the physical dimensions identical across all parts?
A: Yes. All parts use the 0805 (2012 Metric) package with identical dimensions: 0.079" L × 0.049" W (2.00mm × 1.25mm) and maximum seated height of 0.020" (0.50mm). They are mechanically interchangeable on PCBs designed for 0805 components.
Q: What is the difference between cut tape and tape and reel packaging?
A: Cut tape is supplied in shorter lengths for manual or small-quantity applications. Tape and reel (TR) format is supplied on continuous reels suitable for automated pick-and-place equipment in production environments. Both formats contain identical components; the difference is packaging only.
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