RR1220Q-180-D Equivalent & Substitute Parts

Part Overview

The RR1220Q-180-D is an 18 Ohm ±0.5% thin film chip resistor manufactured by Susumu in the 0805 (2012 Metric) package format. This component is rated for 0.1W (1/10W) power dissipation and is designed for surface mount applications requiring precision resistance values. The part is currently in active production status with 1266 units available in inventory. Substitute parts are identified to provide alternative sourcing options when the primary part is unavailable or when design requirements necessitate enhanced performance characteristics such as improved tolerance or extended operating temperature range.

Substiute Parts

RR1220Q-180-D

SusumuIn Stock: 1357RR1220Q-180-D Datasheet

Current PartRFQ

CPF0805B18RE1

TE Connectivity Passive ProductIn Stock: 9462CPF0805B18RE1 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RR1220Q-180-D is determined by the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 18 Ohms
• Package format: 0805 (2012 Metric)
• Power rating: 0.1W (1/10W) minimum
• Composition: Thin film construction
• Number of terminations: 2

Allowable Variation Parameters:

• Tolerance: Equal to or tighter than ±0.5%
• Temperature coefficient: Equal to or lower absolute value
• Operating temperature range: Equal to or exceeding -55°C to 125°C
• Regulatory compliance: ROHS3 and REACH status maintained

The substitute part CPF0805B18RE1 meets all mandatory matching criteria and provides enhanced specifications in tolerance (±0.1% versus ±0.5%) and temperature coefficient (±25ppm/°C versus ±50ppm/°C), making it suitable for applications requiring higher precision.

Parameter Comparison

Engineering Selection Recommendations

RR1220Q-180-D Selection Criteria: The RR1220Q-180-D is appropriate for applications where standard tolerance (±0.5%) and moderate temperature coefficient performance are acceptable. This part maintains active production status and is ROHS3 compliant with unlimited moisture sensitivity rating, suitable for standard manufacturing environments.

CPF0805B18RE1 Selection Criteria: The CPF0805B18RE1 substitute provides enhanced precision with ±0.1% tolerance and improved temperature stability (±25ppm/°C). The extended operating temperature range to 155°C accommodates applications requiring higher thermal performance. This part is also ROHS3 compliant with MSL 1 rating. The maximum seated height of 0.026" (0.65mm) versus 0.020" (0.50mm) for the main part requires verification of PCB layout clearance in space-constrained designs.

Both parts maintain identical regulatory compliance status (ROHS3, REACH Unaffected, ECCN EAR99) and are suitable for equivalent circuit applications where the specified parameters are met.

Frequently Asked Questions (FAQ)

Q: Can CPF0805B18RE1 be used as a direct replacement for RR1220Q-180-D?

A: Yes, CPF0805B18RE1 is electrically and mechanically compatible. Both components share identical resistance value (18 Ohms), power rating (0.1W), package format (0805), and composition (thin film). The substitute provides tighter tolerance and lower temperature coefficient. Physical height difference (0.026" versus 0.020" maximum seated height) requires PCB layout verification for clearance-critical applications.

Q: What are the key differences between these parts?

A: The primary differences are tolerance specification (±0.1% versus ±0.5%), temperature coefficient (±25ppm/°C versus ±50ppm/°C), maximum operating temperature (155°C versus 125°C), and seated height (0.65mm versus 0.50mm). The substitute part offers enhanced precision and thermal performance.

Q: Are both parts RoHS compliant?

A: Yes, both RR1220Q-180-D and CPF0805B18RE1 are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating and REACH Unaffected status.

Q: Does the height difference affect PCB assembly?

A: The CPF0805B18RE1 has a maximum seated height of 0.026" (0.65mm) compared to 0.020" (0.50mm) for the RR1220Q-180-D. This 0.006" (0.15mm) difference is minimal for most applications but should be verified in designs with tight vertical clearance constraints or specific assembly requirements.

Q: Can the RR1220Q-180-D be used in applications requiring the CPF0805B18RE1 specifications?

A: The RR1220Q-180-D meets the basic functional requirements but does not provide the enhanced tolerance and temperature coefficient performance of the CPF0805B18RE1. Applications requiring ±0.1% tolerance or ±25ppm/°C temperature coefficient stability should specify the CPF0805B18RE1.

Q: What is the operating temperature range difference?

A: RR1220Q-180-D operates from -55°C to 125°C, while CPF0805B18RE1 extends to 155°C maximum. Applications requiring operation above 125°C must use the substitute part.