RP2012T-R47-F Equivalent & Substitute Parts

Part Overview

The RP2012T-R47-F is a 470 mOhms ±1% metal film chip resistor in 0805 (2012 Metric) package rated for 0.333W (1/3W) power dissipation. This component is manufactured by Susumu and is currently classified as obsolete. The part operates across a temperature range of -55°C to 125°C with a temperature coefficient of 0/+350ppm/°C. Due to its obsolete status, identifying equivalent substitute components is necessary to maintain design continuity and ensure supply chain availability for new production runs and field replacements.

Substiute Parts

RP2012T-R47-F

SusumuIn Stock: 1054RP2012T-R47-F Datasheet

Current PartRFQ

RL1220S-R47-F

SusumuIn Stock: 350819RL1220S-R47-F Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RP2012T-R47-F is determined by strict equivalence across the following critical parameters:

• Resistance Value: 470 mOhms (exact match required)
• Tolerance: ±1% (exact match required)
• Power Rating: 0.333W / 1/3W (exact match required)
• Package / Case: 0805 (2012 Metric) (exact match required)
• Physical Dimensions: 0.079" L x 0.049" W (2.00mm x 1.25mm) (exact match required)
• Operating Temperature Range: -55°C to 125°C (exact match required)
• Termination Count: 2 (exact match required)
• Compliance Standards: ROHS3 Compliant, REACH Unaffected, MSL 1 (exact match required)

The substitute part RL1220S-R47-F meets all critical electrical and mechanical parameters. While the composition differs (thin film versus metal film) and the temperature coefficient is improved (0/+200ppm/°C versus 0/+350ppm/°C), these variations remain within acceptable substitution criteria for this resistor category. The substitute part is manufactured by the same supplier (Susumu) and maintains active product status, ensuring continued availability.

Parameter Comparison

Engineering Selection Recommendations

The RL1220S-R47-F is a direct functional equivalent to the RP2012T-R47-F for applications requiring a 470 mOhms ±1% resistor in 0805 package format. Selection of the substitute part is supported by the following factors:

Product Status: The RP2012T-R47-F is classified as obsolete, making the active-status RL1220S-R47-F the appropriate choice for ongoing production and procurement.

Electrical Equivalence: Both parts maintain identical resistance value, tolerance, power rating, and operating temperature range. The improved temperature coefficient of the substitute part (0/+200ppm/°C) provides enhanced stability compared to the original specification (0/+350ppm/°C).

Compliance Alignment: Both parts satisfy ROHS3 compliance, REACH unaffected status, and MSL 1 moisture sensitivity requirements, ensuring regulatory and environmental compatibility.

Physical Compatibility: Identical package dimensions, footprint, and termination configuration ensure direct PCB-level substitution without design modification.

Supply Continuity: The substitute part maintains significantly higher inventory availability (350,746 pieces in stock versus 1,010 pieces for the original part), supporting both immediate and long-term supply requirements.

Frequently Asked Questions (FAQ)

Q: Can the RL1220S-R47-F be used as a direct replacement for the RP2012T-R47-F in existing designs?

A: Yes. Both parts share identical electrical specifications (470 mOhms ±1%, 0.333W, -55°C to 125°C), package format (0805), and physical dimensions. Direct PCB substitution is supported without circuit modification.

Q: What is the difference between metal film and thin film composition in these resistors?

A: The RP2012T-R47-F uses metal film construction, while the RL1220S-R47-F uses thin film construction. Both compositions meet the specified tolerance (±1%) and power rating (0.333W). The thin film variant in the substitute part provides a lower temperature coefficient (0/+200ppm/°C versus 0/+350ppm/°C), resulting in improved temperature stability.

Q: Are there packaging differences between these parts?

A: The RP2012T-R47-F is supplied in bulk packaging, while the RL1220S-R47-F is supplied in Tape & Reel (TR) format. Both are compatible with standard pick-and-place assembly equipment. Tape & Reel packaging is standard for high-volume production environments.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the RP2012T-R47-F and RL1220S-R47-F are ROHS3 compliant, REACH unaffected, and classified as MSL 1 (unlimited moisture sensitivity level). Regulatory and environmental requirements are identical.

Q: Why is the RP2012T-R47-F marked as obsolete?

A: The RP2012T-R47-F has been discontinued by the manufacturer. The RL1220S-R47-F represents the active equivalent from the same manufacturer (Susumu) and is the recommended replacement for new designs and ongoing production.

Q: Is the improved temperature coefficient of the substitute part a concern for my application?

A: The lower temperature coefficient of the RL1220S-R47-F (0/+200ppm/°C) represents an improvement over the original specification (0/+350ppm/°C). This provides better performance stability across the operating temperature range (-55°C to 125°C) and is not a limiting factor for substitution.