RMCS1206FT8R66 Equivalent & Substitute Parts

Part Overview

The RMCS1206FT8R66 is an 8.66 Ohm ±1% 0.25W thick film chip resistor in 1206 (3216 Metric) package manufactured by Stackpole Electronics Inc. This component features anti-sulfur coating and is designed for applications requiring precision resistive elements in compact form factors. The part maintains active product status with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified when original inventory is unavailable or when equivalent electrical and mechanical specifications are required for production continuity.

Substiute Parts

RMCS1206FT8R66

Stackpole Electronics IncIn Stock: 746RMCS1206FT8R66 Datasheet

Current PartRFQ

RC1206FR-078R66L

YAGEOIn Stock: 1205RC1206FR-078R66L Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RMCS1206FT8R66 is determined by strict equivalence across the following parameters:

• Resistance value: 8.66 Ohms (exact match required)
• Tolerance: ±1% (exact match required)
• Power rating: 0.25W (exact match required)
• Package: 1206 (3216 Metric) (exact match required)
• Composition: Thick Film (exact match required)
• Temperature coefficient: ±200ppm/°C (exact match required)
• Operating temperature range: -55°C to 155°C (exact match required)
• RoHS compliance: ROHS3 (minimum requirement)
• MSL rating: 1 (minimum requirement)

The RC1206FR-078R66L from YAGEO meets all substitution criteria. Both parts share identical electrical specifications, package dimensions, and environmental compliance ratings. Dimensional variations (width: 1.55mm vs 1.60mm) remain within standard PCB layout tolerances for 1206 components.

Parameter Comparison

Engineering Selection Recommendations

Both the RMCS1206FT8R66 and RC1206FR-078R66L are active products with ROHS3 compliance and REACH unaffected status. Selection between these parts should be based on:

• Availability: YAGEO RC1206FR-078R66L currently maintains higher inventory (1165 pcs vs 712 pcs)
• Coating specification: RMCS1206FT8R66 features anti-sulfur coating; RC1206FR-078R66L features moisture resistant coating
• Supply chain continuity: Either part provides equivalent electrical performance for direct substitution in 1206 footprint designs

Both parts carry identical ECCN (EAR99) and HTSUS (8533.21.0030) classifications, supporting equivalent procurement and logistics handling.

Frequently Asked Questions (FAQ)

Q: Can RC1206FR-078R66L replace RMCS1206FT8R66 in existing designs?

A: Yes. Both parts meet identical electrical specifications (8.66 Ohms ±1%, 0.25W, ±200ppm/°C) and operate across the same temperature range (-55°C to 155°C). Package dimensions are equivalent for 1206 footprint PCB layouts.

Q: What is the difference between anti-sulfur and moisture resistant coatings?

A: Anti-sulfur coating protects against sulfur-containing atmospheric contaminants. Moisture resistant coating provides protection against humidity ingress. Selection depends on environmental exposure conditions in the application.

Q: Are there dimensional differences between these parts?

A: Width specification differs slightly (1.55mm vs 1.60mm). This 0.05mm variation is within standard PCB layout tolerances for 1206 components and does not affect footprint compatibility.

Q: Do both parts require identical reflow profiles?

A: Both parts are thick film 1206 components with identical termination specifications and MSL 1 rating. Standard 1206 reflow profiles apply to both parts.

Q: What is the significance of MSL 1 rating?

A: MSL 1 indicates unlimited shelf life without moisture baking requirements. Both parts can be stored and handled without time-dependent moisture sensitivity constraints.