RMCS1206FT2K49 Equivalent & Substitute Parts

Part Overview

The RMCS1206FT2K49 is a 2.49 kOhms ±1% 0.25W thick film chip resistor in 1206 (3216 Metric) package manufactured by Stackpole Electronics Inc. This anti-sulfur resistor operates across -55°C to 155°C and is RoHS3 compliant with unlimited moisture sensitivity rating. The part is currently active in production with 957 units in stock.

Substitute parts are necessary when the original RMCS1206FT2K49 becomes unavailable, when design requirements demand enhanced specifications such as automotive qualification or higher power ratings, or when supply chain optimization requires alternative qualified sources.

Substiute Parts

RMCS1206FT2K49

Stackpole Electronics IncIn Stock: 990RMCS1206FT2K49 Datasheet

Current PartRFQ

RMCF1206FT2K49

Stackpole Electronics IncIn Stock: 113663RMCF1206FT2K49 Datasheet

MFR RecommendedRFQ

AC1206FR-072K49L

YAGEOIn Stock: 933AC1206FR-072K49L Datasheet

MFR RecommendedRFQ

CR1206-FX-2491ELF

Bourns Inc.In Stock: 699872CR1206-FX-2491ELF Datasheet

MFR RecommendedRFQ

CRCW12062K49FKEA

Vishay DaleIn Stock: 34853CRCW12062K49FKEA Datasheet

MFR RecommendedRFQ

CRCW12062K49FKEAHP

Vishay DaleIn Stock: 43586CRCW12062K49FKEAHP Datasheet

MFR RecommendedRFQ

CRCW12062K49FKTA

Vishay DaleIn Stock: 13741CRCW12062K49FKTA Datasheet

MFR RecommendedRFQ

ERJ-8ENF2491V

Panasonic Electronic ComponentsIn Stock: 149113ERJ-8ENF2491V Datasheet

MFR RecommendedRFQ

RC1206FR-072K49L

YAGEOIn Stock: 10266RC1206FR-072K49L Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict adherence to the following parameters:

Core Electrical Parameters (Must Match):

• Resistance value: 2.49 kOhms
• Tolerance: ±1%
• Temperature coefficient: ±100ppm/°C
• Operating temperature range: -55°C to 155°C

Core Mechanical Parameters (Must Match):

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

Allowable Variations:

• Power rating: 0.25W minimum (higher ratings acceptable for drop-in replacement)
• Physical dimensions: Minor variations within package specification
• Features: Enhanced features (automotive qualification, moisture resistance, pulse withstanding) are allowable additions
• Compliance: RoHS3 compliance required; REACH status variations acceptable

Substitute parts are grouped by their alignment with these parameters and their product status classification.

Parameter Comparison

Engineering Selection Recommendations

Preferred Substitutes (Active Status, RoHS3 Compliant):

RMCF1206FT2K49 (Stackpole Electronics Inc) is the primary recommended substitute. It maintains identical electrical and mechanical specifications while adding automotive AEC-Q200 qualification. Same manufacturer ensures consistent design and performance characteristics.

CRCW12062K49FKEA (Vishay Dale) and AC1206FR-072K49L (YAGEO) are qualified alternatives with automotive AEC-Q200 certification and active production status. Both are RoHS3 compliant and suitable for direct replacement in standard applications.

CR1206-FX-2491ELF (Bourns Inc.) and RC1206FR-072K49L (YAGEO) provide moisture-resistant thick film construction with active product status and RoHS3 compliance. These are appropriate for applications requiring enhanced environmental protection.

CRCW12062K49FKEAHP (Vishay Dale) offers increased power rating (0.75W) while maintaining the 1206 package footprint. This variant is suitable for applications requiring higher pulse withstanding capability or thermal margin.

Conditional Substitutes:

CRCW12062K49FKTA (Vishay Dale) is electrically and mechanically equivalent but carries RoHS non-compliant status and REACH-affected designation. Use only in applications where RoHS3 compliance is not required.

ERJ-8ENF2491V (Panasonic Electronic Components) is electrically and mechanically equivalent with automotive AEC-Q200 qualification but carries "Not For New Designs" product status. Use only for legacy system maintenance or replacement applications where new design qualification is not applicable.

Frequently Asked Questions (FAQ)

Q: Can CRCW12062K49FKEAHP (0.75W) be used as a direct replacement for RMCS1206FT2K49 (0.25W)?

A: Yes. The higher power rating is a superset specification. The 0.75W variant will operate within all electrical and thermal parameters of the original 0.25W design. Physical dimensions remain within 1206 package tolerance.

Q: What is the difference between automotive AEC-Q200 qualified parts and non-qualified parts?

A: AEC-Q200 qualification indicates the part meets automotive industry reliability and performance standards. Parts with this certification are suitable for automotive applications; non-qualified parts are not. For non-automotive applications, both qualified and non-qualified parts meet the same electrical specifications.

Q: Why is ERJ-8ENF2491V marked "Not For New Designs"?

A: This designation indicates the manufacturer has discontinued active development for this part number. While electrically and mechanically equivalent, it should not be selected for new product designs. Use only for maintenance or replacement of existing systems.

Q: Are there compliance differences between substitute options?

A: CRCW12062K49FKTA is RoHS non-compliant and REACH-affected, while all other substitutes are RoHS3 compliant and REACH-unaffected. Select based on your product's compliance requirements.

Q: Do all substitutes have the same moisture sensitivity level?

A: Yes. All listed substitutes maintain MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions during storage or handling.

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

A: Yes. All substitutes meet identical electrical specifications (2.49 kΩ ±1%, ±100ppm/°C, -55°C to 155°C). Physical dimensions vary slightly within 1206 package specification. Verify PCB layout accommodates maximum stated dimensions for each part.