Equivalent & Substitute Parts Reference: RMEF0805FT1K21

Part Overview

Manufacturer part number RMEF0805FT1K21 from Stackpole Electronics Inc is a 1.21 kOhm ±1% 0.125W, 1/8W Chip Resistor in the 0805 (2012 Metric) package. It features automotive AEC-Q200 compliance and thick film technology suitable for environments with a temperature range of -55°C to 155°C. The device is classified as active and is RoHS3 compliant with REACH uninterrupted status. The need to identify alternative and equivalent models arises from production, inventory, or packaging requirements when direct substitution within identical parametric limits is necessary.

Substiute Parts

RMEF0805FT1K21

Stackpole Electronics IncIn Stock: 924RMEF0805FT1K21 Datasheet

Current PartRFQ

RMCF0805FT1K21

Stackpole Electronics IncIn Stock: 229452RMCF0805FT1K21 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute selection is strictly based on matching the key electrical and mechanical parameters: resistance value, tolerance, rated power, temperature coefficient, automotive AEC-Q200 compliance, package size and format, composition, environmental ratings (RoHS, REACH), moisture sensitivity, and physical layout. Only substitutes with identical values across these parameters are considered equivalent for direct replacement within the 0805 chip resistor category.

Parameter Comparison

Engineering Selection Recommendations

Both RMEF0805FT1K21 and RMCF0805FT1K21 are active and present in inventory. Each part is RoHS3 compliant, AEC-Q200 rated, and unaffected by REACH regulation. Moisture Sensitivity Level is identical at 1 (Unlimited), supporting use in environments with unrestricted handling. All substitute selection criteria are fulfilled as per the provided certifications and product statuses.

Frequently Asked Questions (FAQ)

Q: What criteria are used for chip resistor substitution in the 0805 category?
A: The key criteria are resistance value, tolerance, power rating, temperature coefficient, package size, automotive AEC-Q200 compliance, composition type, environmental ratings (RoHS, REACH), and moisture sensitivity level.

Q: Are there differences in physical or electrical specifications between RMEF0805FT1K21 and RMCF0805FT1K21?
A: All parameters required for substitution are matched, including package, resistance, tolerance, rated power, and compliance certifications.

Q: Is packaging method relevant for substitution?
A: Packaging method (bulk vs. tape & reel) may be considered for automated assembly processes; however, it does not affect the electrical or mechanical compatibility between the main and substitute parts.

Q: Do both parts support automotive applications?
A: Yes, both RMEF0805FT1K21 and RMCF0805FT1K21 are rated for automotive use with AEC-Q200 compliance.

Q: Is MSL (Moisture Sensitivity Level) compatibility guaranteed?
A: Both parts feature MSL 1 (Unlimited), ensuring identical handling requirements.

Q: Can either part be used without concern for REACH or RoHS regulations?
A: Both parts are RoHS3 compliant and REACH unaffected, meeting standard environmental compliance requirements.