CMF556K8100FKRE Equivalent & Substitute Parts

Part Overview

The CMF556K8100FKRE is a 6.81 kOhms ±1% metal film through-hole resistor rated at 0.5W (1/2W) in axial package configuration. Manufactured by Vishay Dale, this component features flame retardant coating and moisture resistance suitable for industrial and commercial applications. The part maintains active product status with 962 units in current inventory. Substitute parts are identified to address packaging format preferences, tolerance requirements, or inventory availability while maintaining electrical and mechanical compatibility.

Substiute Parts

CMF556K8100FKRE

Vishay DaleIn Stock: 1036CMF556K8100FKRE Datasheet

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CMF556K8100DHR6

Vishay DaleIn Stock: 1123CMF556K8100DHR6 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CMF556K8100FKRE is determined by the following critical parameters:

• Resistance Value: Must be 6.81 kOhms (exact match required)
• Power Rating: Must be 0.5W minimum (1/2W)
• Package Configuration: Must be Axial through-hole
• Physical Dimensions: Must be 0.090" Dia × 0.240" L (2.29mm × 6.10mm)
• Composition: Must be Metal Film
• Operating Temperature Range: Must support -55°C to 175°C minimum
• Protective Features: Must include Flame Retardant Coating and Moisture Resistance

The CMF556K8100DHR6 qualifies as a direct substitute based on matching all critical electrical and mechanical parameters. Variations in tolerance (±0.5% vs ±1%), temperature coefficient (±50ppm/°C vs ±100ppm/°C), and packaging format (Cut Tape vs Tape & Reel) represent improvements or alternative delivery methods that do not compromise functional compatibility.

Parameter Comparison

Engineering Selection Recommendations

Both CMF556K8100FKRE and CMF556K8100DHR6 maintain active product status from Vishay Dale and share identical RoHS non-compliance and REACH Affected compliance classifications. Selection between these parts should be based on:

Packaging Requirements: The CMF556K8100FKRE is supplied in Tape & Reel format suitable for automated assembly processes. The CMF556K8100DHR6 is supplied in Cut Tape format, appropriate for manual assembly or lower-volume applications.

Tolerance Specification: The CMF556K8100DHR6 provides ±0.5% tolerance compared to ±1% for the main part, offering improved precision where circuit design requires tighter resistance values.

Temperature Stability: The CMF556K8100DHR6 exhibits ±50ppm/°C temperature coefficient versus ±100ppm/°C for the main part, providing superior stability across the full operating temperature range.

Both parts are electrically and mechanically interchangeable within the specified operating parameters.

Frequently Asked Questions (FAQ)

Q: Can CMF556K8100DHR6 be used as a direct replacement for CMF556K8100FKRE?

A: Yes. Both parts share identical resistance value (6.81 kOhms), power rating (0.5W), package configuration (Axial), physical dimensions (0.090" Dia × 0.240" L), and operating temperature range (-55°C to 175°C). The substitute part offers improved tolerance and temperature coefficient specifications.

Q: What is the difference between Tape & Reel and Cut Tape packaging?

A: Tape & Reel (TR) packaging supplies components on continuous tape wound on reels, optimized for high-speed automated pick-and-place assembly. Cut Tape (CT) packaging supplies components on tape segments cut to specific lengths, suitable for manual assembly or lower-volume production runs.

Q: Does the ±0.5% tolerance of CMF556K8100DHR6 affect circuit compatibility?

A: No. The ±0.5% tolerance is a tighter specification than the ±1% tolerance of the main part. Any circuit designed to accept ±1% tolerance will function correctly with the ±0.5% substitute part.

Q: Are there compliance differences between these parts?

A: Both parts share identical RoHS non-compliance and REACH Affected status. No compliance advantage exists between the two options.

Q: What does the temperature coefficient difference mean for circuit performance?

A: The CMF556K8100DHR6 exhibits lower resistance drift across temperature variations (±50ppm/°C vs ±100ppm/°C). This provides improved circuit stability in applications subject to wide temperature fluctuations within the -55°C to 175°C operating range.