RMC1/10K4992FTP Equivalent & Substitute Parts

Part Overview

The RMC1/10K4992FTP is a 49.9 kOhms ±1% 0.125W thick film chip resistor in 0805 (2012 Metric) surface mount package manufactured by Kamaya Inc. This component is classified as Active status and is supplied in Tape & Reel packaging. Equivalent and substitute parts are identified based on matching electrical specifications, mechanical dimensions, and packaging requirements to ensure direct interchangeability in circuit applications.

Key Parameters

Parameter	Value
Resistance	49.9 kOhms
Tolerance	±1%
Power Rating	0.125W (1/8W)
Package / Case	0805 (2012 Metric)
Composition	Thick Film
Temperature Coefficient	±100ppm/°C
Operating Temperature Range	-55°C ~ 155°C
Terminations	2
Moisture Sensitivity Level	1 (Unlimited)
Packaging Type	Tape & Reel (TR)

Substitute Part Grouping Explanation

Substitute parts for the RMC1/10K4992FTP are qualified based on the following critical parameters:

Electrical Specifications:

Resistance value: 49.9 kOhms
Tolerance: ±1%
Power rating: 0.125W (1/8W)
Temperature coefficient: ±100ppm/°C
Operating temperature range: -55°C ~ 155°C

Mechanical Specifications:

Package type: 0805 (2012 Metric)
Physical dimensions: 0.079" L x 0.049" W (2.00mm x 1.25mm)
Maximum seated height: 0.026" (0.65mm)
Number of terminations: 2

Environmental & Compliance:

Moisture sensitivity level: 1 (Unlimited)
Packaging: Tape & Reel (TR)

All identified substitute parts match these parameters exactly, ensuring functional and mechanical interchangeability without circuit redesign or board layout modification.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff (ppm/°C)	Op. Temp Range (°C)	Composition	MSL	Product Status
RMC1/10K4992FTP	Kamaya Inc.	49.9 kOhms	±1%	0.125	0805	±100	-55 ~ 155	Thick Film	1	Active
CRG0805F49K9	TE Connectivity Passive Product	49.9 kOhms	±1%	0.125	0805	±100	-55 ~ 155	Thick Film	1	Active
KTR10EZPF4992	Rohm Semiconductor	49.9 kOhms	±1%	0.125	0805	±100	-55 ~ 155	Thick Film	1	Active
RMCF0805FT49K9	Stackpole Electronics Inc	49.9 kOhms	±1%	0.125	0805	±100	-55 ~ 155	Thick Film	1	Active
RMEF0805FT49K9	Stackpole Electronics Inc	49.9 kOhms	±1%	0.125	0805	±100	-55 ~ 155	Thick Film	1	Active

Engineering Selection Recommendations

All identified substitute parts maintain identical electrical and mechanical specifications to the RMC1/10K4992FTP. Selection among these alternatives is based on the following factors:

Standard Industrial Applications: CRG0805F49K9 (TE Connectivity Passive Product) provides a direct equivalent with ROHS3 compliance and REACH Affected status.

Automotive Applications: KTR10EZPF4992 (Rohm Semiconductor) and RMCF0805FT49K9 (Stackpole Electronics Inc) both carry AEC-Q200 automotive qualification. KTR10EZPF4992 includes high voltage features. RMCF0805FT49K9 offers the largest inventory availability (351,923 pieces).

Automotive with Enhanced Compliance: RMEF0805FT49K9 (Stackpole Electronics Inc) combines AEC-Q200 automotive rating with 7C1 RoHS without exemption (100% Pb-Free) certification and REACH Unaffected status.

All substitute parts are Active status components with MSL 1 (Unlimited) moisture sensitivity rating, suitable for standard storage and handling conditions.

Frequently Asked Questions (FAQ)

Q: Can I substitute RMC1/10K4992FTP with any of the listed parts without circuit modification?

A: Yes. All listed substitute parts match the critical electrical parameters (49.9 kOhms ±1%, 0.125W), temperature characteristics (±100ppm/°C, -55°C ~ 155°C), and mechanical specifications (0805 package, 2.00mm x 1.25mm dimensions). Direct substitution is possible without circuit redesign or board layout changes.

Q: What is the difference between standard and automotive-qualified substitutes?

A: KTR10EZPF4992, RMCF0805FT49K9, and RMEF0805FT49K9 carry AEC-Q200 automotive qualification, indicating compliance with automotive reliability and testing standards. These parts are suitable for automotive applications where such certification is required. CRG0805F49K9 and the original RMC1/10K4992FTP do not carry automotive ratings.

Q: Are there inventory considerations when selecting a substitute?

A: Yes. RMCF0805FT49K9 has the highest inventory availability at 351,923 pieces. KTR10EZPF4992 has 5,419 pieces available. RMEF0805FT49K9 has 25,923 pieces. CRG0805F49K9 has 813 pieces. The original RMC1/10K4992FTP has 714 pieces in stock. Inventory levels may influence lead time and procurement strategy.

Q: What does MSL 1 (Unlimited) mean for handling and storage?

A: MSL 1 indicates the component has unlimited shelf life and does not require special moisture control during storage or handling. Standard industrial storage conditions are acceptable without desiccant packaging or controlled humidity environments.

Q: Are all substitute parts RoHS compliant?

A: CRG0805F49K9, KTR10EZPF4992, RMCF0805FT49K9, and RMEF0805FT49K9 are all ROHS3 compliant. The original RMC1/10K4992FTP does not specify RoHS status in the provided data.

Q: What is the significance of REACH status differences?

A: CRG0805F49K9 is REACH Affected, indicating it may contain substances of concern under REACH regulations. KTR10EZPF4992, RMCF0805FT49K9, RMEF0805FT49K9, and the original RMC1/10K4992FTP are REACH Unaffected, indicating no substances of concern under current REACH regulations.

Q: Can I use these parts interchangeably in high-temperature applications?

A: Yes. All parts share the same operating temperature range of -55°C ~ 155°C and identical temperature coefficient of ±100ppm/°C, ensuring consistent performance across the full temperature spectrum.

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