RMC1/8K1803FTP Equivalent & Substitute Parts

Part Overview

The RMC1/8K1803FTP is a 180 kOhms ±1% 0.25W thick film chip resistor manufactured by Kamaya Inc. in 1206 (3216 Metric) surface mount package format. This component is classified as Active product status with unlimited moisture sensitivity level (MSL 1) and is supplied in Tape & Reel packaging.

Substitute parts are necessary when the primary part becomes unavailable due to supply constraints, inventory depletion, or when alternative manufacturers' components offer equivalent electrical and mechanical performance within the same package specification.

Substiute Parts

RMC1/8K1803FTP

Kamaya Inc.In Stock: 793RMC1/8K1803FTP Datasheet

Current PartRFQ

CRG1206F180K

TE Connectivity Passive ProductIn Stock: 1046CRG1206F180K Datasheet

DirectRFQ

ERJ-8ENF1803V

Panasonic Electronic ComponentsIn Stock: 7974ERJ-8ENF1803V Datasheet

DirectRFQ

KTR18EZPF1803

Rohm SemiconductorIn Stock: 25617KTR18EZPF1803 Datasheet

DirectRFQ

MCR18ERTF1803

Rohm SemiconductorIn Stock: 1520MCR18ERTF1803 Datasheet

DirectRFQ

RC1206FR-07180KL

YAGEOIn Stock: 30271RC1206FR-07180KL Datasheet

DirectRFQ

RC3216F184CS

Samsung Electro-MechanicsIn Stock: 902RC3216F184CS Datasheet

DirectRFQ

RMCF1206FT180K

Stackpole Electronics IncIn Stock: 28703RMCF1206FT180K Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RMC1/8K1803FTP is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Resistance Value: 180 kOhms (exact match required)
• Tolerance: ±1% (exact match required)
• Power Rating: 0.25W / 1/4W (exact match required)
• Package / Case: 1206 (3216 Metric) (exact match required)
• Composition: Thick Film (exact match required)
• Temperature Coefficient: ±100ppm/°C (exact match required)
• Operating Temperature Range: -55°C ~ 155°C (exact match required)
• Number of Terminations: 2 (exact match required)

All seven substitute parts listed below meet these mandatory criteria and are therefore electrically and mechanically interchangeable with the RMC1/8K1803FTP in standard applications.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Active Status, Highest Availability):

CRG1206F180K (TE Connectivity), KTR18EZPF1803 (Rohm Semiconductor), RC1206FR-07180KL (YAGEO), RC3216F184CS (Samsung Electro-Mechanics), and RMCF1206FT180K (Stackpole Electronics Inc) are all Active products with current manufacturing status. These five parts offer the most reliable long-term supply continuity and are suitable for new design implementations.

Secondary Substitute (Automotive-Qualified, Active Status):

KTR18EZPF1803 and RMCF1206FT180K both carry AEC-Q200 automotive qualification ratings. These components are appropriate for applications requiring automotive-grade reliability and environmental performance specifications.

Moisture-Resistant Variants:

RC1206FR-07180KL (YAGEO) and RC3216F184CS (Samsung Electro-Mechanics) are specified with moisture-resistant features, providing enhanced protection in humid or moisture-prone environments.

Discontinued Part (Limited Use):

MCR18ERTF1803 (Rohm Semiconductor) is discontinued at DiGi Electronics and should not be selected for new designs. This part is listed for reference only in legacy system maintenance scenarios.

Not For New Designs:

ERJ-8ENF1803V (Panasonic Electronic Components) carries "Not For New Designs" status and should be avoided in new product development.

Frequently Asked Questions (FAQ)

Q: Can I substitute any of these parts directly into a circuit designed for RMC1/8K1803FTP?

A: Yes. All seven substitute parts listed meet identical electrical specifications (180 kOhms ±1%, 0.25W, ±100ppm/°C, -55°C ~ 155°C) and physical package requirements (1206 / 3216 Metric, 2 terminations). Direct substitution is electrically and mechanically valid.

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

A: Tape & Reel packaging supplies components on continuous carrier tape suitable for automated pick-and-place assembly. Cut Tape & Digi-Reel packaging provides components in shorter tape segments or alternative reel formats. Both formats contain identical components; packaging selection depends on assembly equipment compatibility and order quantity requirements.

Q: Why are some parts marked "Not For New Designs" or "Discontinued"?

A: Product status reflects manufacturer lifecycle decisions. "Not For New Designs" indicates the manufacturer is transitioning away from the product line. "Discontinued at DiGi Electronics" indicates supply channel discontinuation. These parts remain electrically equivalent but carry supply risk and should not be selected for new product development.

Q: Do the automotive-qualified parts (AEC-Q200) cost more?

A: Automotive qualification typically involves additional testing and documentation. Cost comparison is not provided in this technical reference. Consult supplier pricing for specific cost analysis.

Q: Are there dimensional differences between substitute parts?

A: Minor dimensional variations exist within the 1206 package specification. Length ranges from 0.120" to 0.126" (3.05mm to 3.20mm), width from 0.061" to 0.063" (1.55mm to 1.60mm), and height from 0.025" to 0.028" (0.65mm to 0.70mm). These variations remain within standard 1206 package tolerances and do not affect circuit board layout or assembly compatibility.

Q: Which substitute offers the best inventory availability?

A: RC1206FR-07180KL (YAGEO) shows 30,200 pieces in stock, representing the highest documented inventory level among all listed substitutes.

Q: Can I mix different manufacturers' parts in the same circuit?

A: Yes. All substitute parts meet identical electrical and mechanical specifications. Mixing manufacturers within a single circuit board is electrically valid and commonly practiced in production environments.