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RSMF2JTR270 Equivalent & Substitute Parts
Part Overview
The RSMF2JTR270 is a 270 mOhms ±5% 2W through-hole resistor manufactured by Stackpole Electronics Inc. This axial metal oxide film resistor features flame-proof construction and safety certification, designed for applications requiring precision current-sensing and load-balancing circuits. The part is currently in active production status with 753 units available in tape and reel packaging. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained across the allowed parameter range.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Resistance | 270 mOhms |
| Tolerance | ±5% |
| Power Rating | 2W |
| Composition | Metal Oxide Film |
| Temperature Coefficient | ±200ppm/°C |
| Operating Temperature Range | -55°C to 235°C |
| Package Type | Axial |
| Number of Terminations | 2 |
| RoHS Status | ROHS3 Compliant |
Substitute Part Grouping Explanation
Substitution eligibility for the RSMF2JTR270 is determined by strict equivalence in the following parameters:
- Resistance value: 270 mOhms
- Tolerance: ±5%
- Power rating: 2W
- Composition: Metal Oxide Film
- Temperature coefficient: ±200ppm/°C
- Operating temperature range: -55°C to 235°C
- Package configuration: Axial through-hole
- Termination count: 2
- Regulatory compliance: ROHS3 Compliant, REACH Unaffected
The RSF2JTR270 meets all electrical and mechanical substitution criteria. Packaging format differences (tape and reel versus cut tape) do not affect functional equivalence and represent logistical variations only.
Parameter Comparison
| Parameter | RSMF2JTR270 | RSF2JTR270 |
|---|---|---|
| Manufacturer | Stackpole Electronics Inc | Stackpole Electronics Inc |
| Resistance | 270 mOhms | 270 mOhms |
| Tolerance | ±5% | ±5% |
| Power Rating | 2W | 2W |
| Composition | Metal Oxide Film | Metal Oxide Film |
| Temperature Coefficient | ±200ppm/°C | ±200ppm/°C |
| Operating Temperature | -55°C to 235°C | -55°C to 235°C |
| Package Type | Axial | Axial |
| Number of Terminations | 2 | 2 |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant |
| REACH Status | REACH Unaffected | REACH Unaffected |
| Product Status | Active | Active |
| Packaging Format | Tape & Reel (TR) | Cut Tape (CT) |
| Physical Dimensions | 0.177" Dia x 0.433" L (4.50mm x 11.00mm) | 0.217" Dia x 0.591" L (5.50mm x 15.00mm) |
Engineering Selection Recommendations
Both the RSMF2JTR270 and RSF2JTR270 are active production components from Stackpole Electronics Inc with identical electrical specifications and regulatory compliance. Selection between these parts is determined by packaging requirements and physical dimensions. The RSMF2JTR270 in tape and reel format is suitable for automated assembly processes. The RSF2JTR270 in cut tape format accommodates manual assembly or lower-volume production workflows. Both parts maintain ROHS3 compliance and REACH unaffected status, meeting current environmental and safety standards.
Frequently Asked Questions (FAQ)
Q: Can RSF2JTR270 replace RSMF2JTR270 in existing designs?
A: Yes. Both parts share identical electrical parameters: 270 mOhms resistance, ±5% tolerance, 2W power rating, and ±200ppm/°C temperature coefficient. The operating temperature range and metal oxide film composition are equivalent. Substitution is electrically valid.
Q: What is the difference between tape and reel versus cut tape packaging?
A: Tape and reel (TR) packaging is optimized for automated pick-and-place assembly equipment. Cut tape (CT) packaging provides individual component access for manual assembly or lower-volume applications. Both formats contain identical components with no functional difference.
Q: Are there physical dimension differences between these parts?
A: Yes. The RSMF2JTR270 measures 0.177" diameter by 0.433" length. The RSF2JTR270 measures 0.217" diameter by 0.591" length. These dimensional variations must be verified against PCB layout and mechanical clearance requirements before substitution.
Q: Do both parts meet the same regulatory standards?
A: Yes. Both RSMF2JTR270 and RSF2JTR270 are ROHS3 compliant and REACH unaffected, meeting current environmental and safety regulations.
Q: Which part should be selected for new designs?
A: Selection depends on assembly methodology and packaging logistics. For automated assembly, RSMF2JTR270 in tape and reel format is standard. For manual assembly or component-level procurement, RSF2JTR270 in cut tape format is appropriate. Both are active production parts with equivalent electrical performance.
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