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RNF14FTC180K Equivalent & Substitute Parts
Part Overview
The RNF14FTC180K is a 180 kOhms ±1% metal film through-hole resistor rated at 0.25W (1/4W) in axial package configuration. Manufactured by Stackpole Electronics Inc, this component features flame retardant coating and safety construction suitable for industrial and commercial applications. The part maintains Active product status with full RoHS3 compliance and REACH unaffected designation. Substitute parts are identified when equivalent electrical specifications, mechanical compatibility, and regulatory compliance are maintained across alternative packaging or series variants.
Substiute Parts
Key Parameters
| Parameter | Specification |
|---|---|
| Resistance Value | 180 kOhms |
| Tolerance | ±1% |
| Power Rating | 0.25W (1/4W) |
| Composition | Metal Film |
| Package Type | Axial |
| Temperature Coefficient | ±50ppm/°C |
| Operating Temperature Range | -55°C to 155°C |
| Features | Flame Retardant Coating, Safety |
| RoHS Status | ROHS3 Compliant |
| Terminations | 2 |
Substitute Part Grouping Explanation
Substitution eligibility for the RNF14FTC180K is determined by strict equivalence across the following parameters:
- Resistance value: 180 kOhms (exact match required)
- Tolerance: ±1% (exact match required)
- Power rating: 0.25W / 1/4W (exact match required)
- Composition: Metal Film (exact match required)
- Package configuration: Axial (exact match required)
- Temperature coefficient: ±50ppm/°C (exact match required)
- Operating temperature range: -55°C to 155°C (exact match required)
- Regulatory compliance: RoHS3 Compliant, REACH Unaffected (exact match required)
The RNMF14FTC180K qualifies as a manufacturer-recommended substitute based on identical electrical specifications and regulatory status. Variation in physical dimensions and packaging format (Cut Tape versus Tape & Reel) does not affect functional equivalence in circuit applications.
Parameter Comparison
| Parameter | RNF14FTC180K | RNMF14FTC180K | Match Status |
|---|---|---|---|
| Resistance | 180 kOhms | 180 kOhms | Equivalent |
| Tolerance | ±1% | ±1% | Equivalent |
| Power Rating | 0.25W | 0.25W | Equivalent |
| Composition | Metal Film | Metal Film | Equivalent |
| Package | Axial | Axial | Equivalent |
| Temperature Coefficient | ±50ppm/°C | ±50ppm/°C | Equivalent |
| Operating Temperature | -55°C to 155°C | -55°C to 155°C | Equivalent |
| Features | Flame Retardant, Safety | Flame Retardant, Safety | Equivalent |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | Equivalent |
| Size / Dimension | 0.093" Dia x 0.250" L (2.35mm x 6.35mm) | 0.070" Dia x 0.130" L (1.78mm x 3.30mm) | Different |
| Packaging Format | Tape & Reel (TR) | Cut Tape (CT) | Different |
Engineering Selection Recommendations
The RNMF14FTC180K is a valid substitute for the RNF14FTC180K based on identical electrical performance specifications and regulatory compliance status. Both components maintain Active product status with full RoHS3 compliance and REACH unaffected designation.
Physical dimension differences (standard versus mini form factor) and packaging format variations (Tape & Reel versus Cut Tape) do not affect electrical functionality. Selection between these parts should be based on:
- PCB layout constraints and available board space
- Automated assembly equipment compatibility with packaging format
- Inventory availability and supply chain requirements
- Cost considerations associated with packaging and form factor
Both parts are suitable for direct substitution in circuit designs where the specified electrical parameters are required.
Frequently Asked Questions (FAQ)
Q: Can the RNMF14FTC180K replace the RNF14FTC180K in existing designs?
A: Yes. The RNMF14FTC180K provides identical electrical specifications including resistance value, tolerance, power rating, temperature coefficient, and operating temperature range. Both components meet RoHS3 compliance and REACH requirements. Substitution is electrically valid.
Q: What are the physical differences between these parts?
A: The RNF14FTC180K measures 0.093" diameter by 0.250" length (2.35mm x 6.35mm). The RNMF14FTC180K measures 0.070" diameter by 0.130" length (1.78mm x 3.30mm). The RNMF series uses a compact mini form factor. Both maintain axial package configuration.
Q: Does the smaller size of the RNMF14FTC180K affect performance?
A: No. Reduced physical dimensions do not alter electrical performance. Resistance value, tolerance, power dissipation capability, temperature coefficient, and operating temperature range remain identical. Size reduction reflects design optimization within the same electrical specification class.
Q: Are packaging format differences significant for substitution?
A: Packaging format differences (Tape & Reel versus Cut Tape) affect supply chain logistics and assembly process compatibility, not electrical function. Selection depends on manufacturing equipment capabilities and inventory management requirements.
Q: Do both parts meet the same regulatory standards?
A: Yes. Both the RNF14FTC180K and RNMF14FTC180K are RoHS3 compliant and REACH unaffected. Regulatory compliance is equivalent across both parts.
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