RMC1/8-4R99FTP Equivalent & Substitute Parts

Part Overview

The RMC1/8-4R99FTP is a 4.99 Ohm ±1% 0.25W thick film chip resistor manufactured by Kamaya Inc. in 1206 (3216 Metric) package format. This component is classified as Active product status with 846 pieces currently in stock. The RMC1/8-4R99FTP serves as a precision resistive element in electronic circuits requiring stable resistance values across industrial and commercial temperature ranges. Substitute parts are identified when equivalent electrical specifications, mechanical dimensions, and environmental ratings align with the original component's performance envelope.

Substiute Parts

RMC1/8-4R99FTP

Kamaya Inc.In Stock: 872RMC1/8-4R99FTP Datasheet

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RC1206FR-074R99L

YAGEOIn Stock: 60017RC1206FR-074R99L Datasheet

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RMCF1206FT4R99

Stackpole Electronics IncIn Stock: 117928RMCF1206FT4R99 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RMC1/8-4R99FTP are qualified based on the following criteria:

Electrical Parameters (Critical):

• Resistance value: 4.99 Ohms
• Tolerance: ±1%
• Power rating: 0.25W (1/4W)

Mechanical Parameters (Critical):

• Package type: 1206 (3216 Metric)
• Number of terminations: 2
• Composition: Thick Film

Environmental Parameters (Critical):

• Operating temperature range: -55°C to 155°C
• Moisture Sensitivity Level: 1 (Unlimited)
• REACH Status: REACH Unaffected

Packaging Parameters (Critical):

• Format: Tape & Reel (TR)

The identified substitute parts RC1206FR-074R99L (YAGEO) and RMCF1206FT4R99 (Stackpole Electronics Inc) meet all critical electrical, mechanical, and environmental parameters. Variations in temperature coefficient and additional certifications (Moisture Resistant, AEC-Q200) represent enhanced features rather than deviations from core specifications.

Parameter Comparison

Engineering Selection Recommendations

RC1206FR-074R99L (YAGEO): This substitute part is qualified for applications requiring moisture-resistant thick film construction. The RC_L series designation indicates enhanced moisture resistance characteristics. YAGEO RC1206FR-074R99L maintains identical electrical specifications and operating temperature range as the RMC1/8-4R99FTP. Temperature coefficient is ±200 ppm/°C, which represents tighter tolerance than the original part's -200/+500 ppm/°C specification. RoHS3 compliance is provided. Inventory availability is 59,986 pieces. This part is suitable for direct substitution in applications where moisture resistance is beneficial.

RMCF1206FT4R99 (Stackpole Electronics Inc): This substitute part is qualified for automotive and high-reliability applications through AEC-Q200 certification. The RMCF series is designed for automotive-grade performance. RMCF1206FT4R99 maintains identical electrical specifications and operating temperature range as the RMC1/8-4R99FTP. Temperature coefficient is ±200 ppm/°C. RoHS3 compliance is provided. Inventory availability is 117,865 pieces. Physical dimensions show minor variation: length 0.126" (3.20mm) versus 0.122" (3.10mm) and height 0.028" (0.70mm) versus 0.025" (0.65mm). This part is suitable for direct substitution in applications requiring automotive-grade reliability or where AEC-Q200 certification is specified.

Both substitute parts are Active product status with REACH Unaffected and EAR99 ECCN classification, matching the original component's regulatory profile.

Frequently Asked Questions (FAQ)

Q: Can RC1206FR-074R99L replace RMC1/8-4R99FTP in all applications?

A: RC1206FR-074R99L meets all critical electrical and mechanical specifications for direct substitution. The primary difference is enhanced moisture resistance in the RC_L series. Temperature coefficient is ±200 ppm/°C compared to the original -200/+500 ppm/°C, representing improved stability. Physical dimensions are identical. Substitution is valid for all applications where the original part is specified.

Q: Can RMCF1206FT4R99 replace RMC1/8-4R99FTP in all applications?

A: RMCF1206FT4R99 meets all critical electrical and mechanical specifications for direct substitution. Physical dimensions show minor variation: length increases from 3.10mm to 3.20mm and height increases from 0.65mm to 0.70mm. These dimensional differences must be evaluated against circuit board layout constraints. Temperature coefficient is ±200 ppm/°C. AEC-Q200 certification provides automotive-grade reliability. Substitution is valid when dimensional tolerances accommodate the slightly larger package footprint.

Q: What is the difference between temperature coefficient specifications?

A: RMC1/8-4R99FTP specifies -200/+500 ppm/°C, indicating asymmetrical temperature behavior. RC1206FR-074R99L and RMCF1206FT4R99 specify ±200 ppm/°C, indicating symmetrical temperature behavior. The substitute parts provide tighter and more predictable temperature coefficient performance across the -55°C to 155°C operating range.

Q: Are all three parts RoHS compliant?

A: RMC1/8-4R99FTP does not specify RoHS status in provided data. RC1206FR-074R99L and RMCF1206FT4R99 are both RoHS3 compliant. If RoHS3 compliance is required, substitute parts are recommended.

Q: What is the significance of AEC-Q200 certification on RMCF1206FT4R99?

A: AEC-Q200 is an automotive industry standard qualification for passive components. RMCF1206FT4R99 carries this certification, indicating the part meets automotive reliability and performance requirements. This certification is relevant only for applications requiring automotive-grade components.

Q: Are there inventory considerations for part selection?

A: RMC1/8-4R99FTP has 846 pieces in stock. RC1206FR-074R99L has 59,986 pieces in stock. RMCF1206FT4R99 has 117,865 pieces in stock. Substitute parts offer significantly higher inventory availability for high-volume procurement scenarios.

Q: Do all three parts use identical packaging format?

A: All three parts use Tape & Reel (TR) packaging format. This ensures compatibility with automated assembly equipment and standard component handling procedures.