RC1608F3090CS Equivalent & Substitute Parts Reference

Part Overview

The RC1608F3090CS is a 309 Ohms ±1% thick film chip resistor manufactured by Samsung Electro-Mechanics in 0603 (1608 Metric) package format with 0.1W power rating. This component is classified as Active product status with moisture-resistant construction and unlimited moisture sensitivity level (MSL 1). The part is ROHS3 compliant and suitable for general industrial applications requiring standard tolerance resistive elements.

Equivalent and substitute parts are necessary when the primary part becomes unavailable, when supply chain optimization is required, or when design flexibility across multiple qualified suppliers is needed while maintaining identical electrical and mechanical performance specifications.

Substiute Parts

RC1608F3090CS

Samsung Electro-MechanicsIn Stock: 1125RC1608F3090CS Datasheet

Current PartRFQ

CR0603-FX-3090ELF

Bourns Inc.In Stock: 19111CR0603-FX-3090ELF Datasheet

DirectRFQ

RC0603FR-07309RL

YAGEOIn Stock: 55251RC0603FR-07309RL Datasheet

DirectRFQ

MCR03ERTF3090

Rohm SemiconductorIn Stock: 1070MCR03ERTF3090 Datasheet

UpgradeRFQ

CRCW0603309RFKEA

Vishay DaleIn Stock: 33096CRCW0603309RFKEA Datasheet

SimilarRFQ

ERJ-3EKF3090V

Panasonic Electronic ComponentsIn Stock: 35065ERJ-3EKF3090V Datasheet

SimilarRFQ

RMCF0603FT309R

Stackpole Electronics IncIn Stock: 12788RMCF0603FT309R Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RC1608F3090CS is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Resistance Value: 309 Ohms (exact match required)
• Tolerance: ±1% (exact match required)
• Power Rating: 0.1W / 1/10W (exact match required)
• Package / Case: 0603 (1608 Metric) (exact match required)
• Composition: Thick Film (exact match required)
• Temperature Coefficient: ±100ppm/°C (exact match required)
• Operating Temperature Range: -55°C to +155°C (exact match required)
• Number of Terminations: 2 (exact match required)
• RoHS Status: ROHS3 Compliant (exact match required)
• Moisture Sensitivity Level: 1 (exact match required)

All substitute parts listed below meet these mandatory parameters. Substitute parts are categorized as follows:

Direct Substitutes: Parts with identical specifications and standard industrial features (CR0603-FX-3090ELF, RC0603FR-07309RL)

Upgrade Substitutes: Parts with identical core specifications but discontinued status (MCR03ERTF3090)

Similar Substitutes with Enhanced Features: Parts meeting all mandatory parameters with additional automotive-grade qualification (CRCW0603309RFKEA, ERJ-3EKF3090V, RMCF0603FT309R)

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications and Status):

CR0603-FX-3090ELF (Bourns Inc.) and RC0603FR-07309RL (YAGEO) are fully equivalent direct substitutes. Both maintain Active product status, moisture-resistant construction, and identical electrical specifications. RC0603FR-07309RL offers higher inventory availability (55,217 pcs) compared to CR0603-FX-3090ELF (19,051 pcs), making it suitable for high-volume procurement scenarios.

For Applications Requiring Automotive Qualification:

CRCW0603309RFKEA (Vishay Dale), ERJ-3EKF3090V (Panasonic Electronic Components), and RMCF0603FT309R (Stackpole Electronics Inc) are functionally equivalent with additional AEC-Q200 automotive-grade certification. These parts are suitable for automotive and mission-critical applications where enhanced reliability qualification is specified. All three maintain Active product status with substantial inventory availability (32,992 pcs, 34,980 pcs, and 12,760 pcs respectively).

For Discontinued Part Replacement:

MCR03ERTF3090 (Rohm Semiconductor) is classified as Discontinued at DiGi Electronics. While electrically equivalent, this part should not be selected for new designs or long-term supply chain planning. Existing designs using this part should transition to CR0603-FX-3090ELF or RC0603FR-07309RL.

Compliance Considerations:

All listed substitute parts maintain ROHS3 compliance, REACH Unaffected status, and EAR99 export classification, matching the regulatory profile of the primary part RC1608F3090CS.

Frequently Asked Questions (FAQ)

Q: Can CR0603-FX-3090ELF replace RC1608F3090CS in existing designs without modification?

A: Yes. CR0603-FX-3090ELF is a direct substitute meeting all electrical and mechanical specifications. Both parts are 309 Ohms ±1%, 0.1W, 0603 package, thick film composition with ±100ppm/°C temperature coefficient and -55°C to +155°C operating range. No circuit redesign or PCB layout modification is required.

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

A: Moisture-resistant construction (RC1608F3090CS, CR0603-FX-3090ELF, RC0603FR-07309RL) provides standard environmental protection suitable for general industrial applications. Automotive AEC-Q200 qualification (CRCW0603309RFKEA, ERJ-3EKF3090V, RMCF0603FT309R) includes additional reliability testing, qualification protocols, and traceability requirements mandated for automotive applications. Both meet identical electrical specifications and are mechanically interchangeable.

Q: Are there physical dimension differences between substitute parts?

A: Minor dimensional variations exist within tolerance. RC1608F3090CS, CR0603-FX-3090ELF, and ERJ-3EKF3090V specify 0.063" L × 0.031" W (1.60mm × 0.80mm). CRCW0603309RFKEA and RMCF0603FT309R specify 0.061" L × 0.033" W (1.55mm × 0.85mm) and 0.061" L × 0.031" W (1.55mm × 0.80mm) respectively. These variations remain within 0603 package tolerance and do not affect PCB footprint compatibility or soldering process parameters.

Q: Which substitute part offers the best supply chain availability?

A: RC0603FR-07309RL (YAGEO) provides the highest inventory level at 55,217 pcs. For automotive-qualified alternatives, ERJ-3EKF3090V (Panasonic) offers 34,980 pcs and CRCW0603309RFKEA (Vishay Dale) offers 32,992 pcs.

Q: Is MCR03ERTF3090 suitable for new product designs?

A: No. MCR03ERTF3090 is classified as Discontinued at DiGi Electronics and should not be specified for new designs. Select CR0603-FX-3090ELF, RC0603FR-07309RL, or automotive-qualified alternatives for new product development.

Q: Do all substitute parts maintain the same moisture sensitivity level?

A: Yes. All listed substitute parts maintain MSL 1 (Unlimited) rating, identical to RC1608F3090CS. This classification indicates no moisture sensitivity restrictions and unlimited shelf life under standard storage conditions.

Q: Can automotive-qualified parts be used in non-automotive applications?

A: Yes. Automotive-qualified parts (CRCW0603309RFKEA, ERJ-3EKF3090V, RMCF0603FT309R) exceed the electrical and reliability requirements of standard industrial applications. They are fully compatible with non-automotive designs and provide enhanced reliability margin.