RC1608F1241CS Equivalent & Substitute Parts Reference

Part Overview

The RC1608F1241CS is a 1.24 kOhms ±1% thick film chip resistor manufactured by Samsung Electro-Mechanics in 0603 (1608 Metric) package format. This component is rated for 0.1W (1/10W) power dissipation with moisture-resistant construction and operates across the temperature range of -55°C to 155°C. The part maintains Active product status and is ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating.

Equivalent and substitute parts are identified when component availability is limited, supply chain disruptions occur, or design flexibility is required for manufacturing optimization. The parts listed below maintain electrical and mechanical compatibility within the specified parameter tolerances.

Substiute Parts

RC1608F1241CS

Samsung Electro-MechanicsIn Stock: 814RC1608F1241CS Datasheet

Current PartRFQ

CR0603-FX-1241ELF

Bourns Inc.In Stock: 49295CR0603-FX-1241ELF Datasheet

DirectRFQ

RC0603FR-071K24L

YAGEOIn Stock: 38513RC0603FR-071K24L Datasheet

DirectRFQ

AC0603FR-071K24L

YAGEOIn Stock: 7248AC0603FR-071K24L Datasheet

SimilarRFQ

CRCW06031K24FKEA

Vishay DaleIn Stock: 28401CRCW06031K24FKEA Datasheet

SimilarRFQ

ERJ-2RKF1241X

Panasonic Electronic ComponentsIn Stock: 49558ERJ-2RKF1241X Datasheet

SimilarRFQ

ERJ-3EKF1241V

Panasonic Electronic ComponentsIn Stock: 117296ERJ-3EKF1241V Datasheet

SimilarRFQ

RMCF0603FT1K24

Stackpole Electronics IncIn Stock: 133904RMCF0603FT1K24 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 1.24 kOhms
• Tolerance: ±1%
• Power rating: 0.1W (1/10W)
• Temperature coefficient: ±100ppm/°C
• Operating temperature range: -55°C to 155°C
• Composition: Thick Film
• Number of terminations: 2
• RoHS compliance: ROHS3 Compliant
• MSL rating: 1 (Unlimited)

Package Compatibility: Substitute parts are grouped into two categories based on package format:

Category A - Direct Package Match (0603/1608 Metric): Parts maintaining identical 0603 (1608 Metric) package dimensions are fully interchangeable with the RC1608F1241CS without PCB layout modification.

Category B - Similar Package (0402/1005 Metric): Parts in smaller 0402 package format require PCB footprint adjustment but maintain all electrical specifications. These are suitable for space-constrained applications.

Automotive Qualification: Several substitute parts carry AEC-Q200 automotive qualification, which exceeds the base specification of the RC1608F1241CS but does not preclude substitution in non-automotive applications.

Parameter Comparison

Engineering Selection Recommendations

Direct Substitution (0603 Package, No PCB Modification Required):

The following parts are electrically and mechanically equivalent to RC1608F1241CS and require no design changes:

• CR0603-FX-1241ELF (Bourns Inc.): Maintains identical specifications with 49,251 units in stock. Suitable for applications requiring standard industrial-grade thick film resistors.

• RC0603FR-071K24L (YAGEO): Equivalent performance with 38,477 units available. RC_L series provides consistent moisture-resistant construction.

• AC0603FR-071K24L (YAGEO): Includes AEC-Q200 automotive qualification with 7,167 units in stock. Acceptable for non-automotive applications where automotive-grade components are available.

• CRCW06031K24FKEA (Vishay Dale): AEC-Q200 qualified with 28,380 units in inventory. CRCW series maintains automotive reliability standards.

• ERJ-3EKF1241V (Panasonic Electronic Components): AEC-Q200 automotive-grade 0603 package with highest inventory availability at 117,263 units. Suitable for applications requiring enhanced reliability margins.

• RMCF0603FT1K24 (Stackpole Electronics Inc): AEC-Q200 qualified with 133,871 units in stock. RMCF series provides automotive-grade performance for standard applications.

Conditional Substitution (0402 Package, PCB Footprint Modification Required):

• ERJ-2RKF1241X (Panasonic Electronic Components): 0402 (1005 Metric) package format with AEC-Q200 qualification and 49,532 units available. This part requires PCB layout redesign to accommodate smaller footprint dimensions (1.00mm L x 0.50mm W versus 1.60mm L x 0.80mm). Use only when space constraints justify redesign effort.

Product Status and Compliance:

All listed substitute parts maintain Active product status and ROHS3 compliance. All parts carry MSL 1 (Unlimited) moisture sensitivity rating, matching the original specification. Selection among equivalent parts should prioritize inventory availability and supply chain reliability for the target application timeline.

Frequently Asked Questions (FAQ)

Q1: Can I substitute RC1608F1241CS with any of the listed parts without circuit redesign?

A: Yes, for all parts listed except ERJ-2RKF1241X. The six 0603-package substitutes (CR0603-FX-1241ELF, RC0603FR-071K24L, AC0603FR-071K24L, CRCW06031K24FKEA, ERJ-3EKF1241V, and RMCF0603FT1K24) are direct footprint replacements. ERJ-2RKF1241X requires PCB redesign due to 0402 package format.

Q2: What is the difference between standard and AEC-Q200 qualified parts?

A: AEC-Q200 qualification indicates the part meets automotive industry reliability and testing standards. Parts carrying this qualification (AC0603FR-071K24L, CRCW06031K24FKEA, ERJ-2RKF1241X, ERJ-3EKF1241V, RMCF0603FT1K24) exceed base specifications but are fully compatible with non-automotive applications. The RC1608F1241CS and CR0603-FX-1241ELF do not carry AEC-Q200 qualification but meet all electrical and environmental specifications.

Q3: Are there dimensional differences between 0603 package substitutes?

A: Minor dimensional variations exist within 0603 package tolerance. CRCW06031K24FKEA dimensions are 0.061" L x 0.033" W (1.55mm x 0.85mm) with 0.020" max height, while other 0603 parts are 0.063" L x 0.031" W (1.60mm x 0.80mm) with 0.022" max height. These variations remain within standard PCB footprint tolerances and do not affect interchangeability.

Q4: Which substitute part has the highest inventory availability?

A: RMCF0603FT1K24 (Stackpole Electronics Inc) offers the highest inventory with 133,871 units in stock, followed by ERJ-3EKF1241V (Panasonic) with 117,263 units. Both are 0603 package, AEC-Q200 qualified, and provide immediate availability for high-volume requirements.

Q5: Can I use 0402 package parts as a space-saving alternative?

A: ERJ-2RKF1241X is electrically equivalent but requires PCB footprint modification. The 0402 package (1.00mm x 0.50mm) is significantly smaller than 0603 (1.60mm x 0.80mm). Use this substitution only when PCB redesign is feasible and space constraints justify the engineering effort.

Q6: Do all substitute parts meet the same moisture and temperature specifications?

A: Yes. All listed parts maintain ±100ppm/°C temperature coefficient, -55°C to 155°C operating range, and MSL 1 (Unlimited) moisture sensitivity rating. All are ROHS3 compliant. Environmental performance is equivalent across all substitutes.

Q7: What is the tolerance specification, and does it affect substitution?

A: All parts, including RC1608F1241CS and all substitutes, carry ±1% tolerance on the 1.24 kOhms resistance value. This tolerance is uniform across all options and does not differentiate substitution eligibility.