RC1608J305CS Equivalent & Substitute Parts Reference

Part Overview

The RC1608J305CS is a 3 MOhms ±5% 0.1W thick film chip resistor in 0603 (1608 Metric) package manufactured by Samsung Electro-Mechanics. This component is classified as Active product status with 699 pieces currently in stock. The part is moisture resistant and suitable for general-purpose applications requiring high-value resistive elements in compact form factors. Equivalent and substitute parts are identified to provide design flexibility, supply chain alternatives, and performance upgrades where applicable.

Substiute Parts

RC1608J305CS

Samsung Electro-MechanicsIn Stock: 772RC1608J305CS Datasheet

Current PartRFQ

RC0603JR-073ML

YAGEOIn Stock: 1750RC0603JR-073ML Datasheet

DirectRFQ

KTR03EZPF3004

Rohm SemiconductorIn Stock: 97093KTR03EZPF3004 Datasheet

UpgradeRFQ

MCR03ERTJ305

Rohm SemiconductorIn Stock: 2222MCR03ERTJ305 Datasheet

UpgradeRFQ

RMCF0603FT3M00

Stackpole Electronics IncIn Stock: 560558RMCF0603FT3M00 Datasheet

UpgradeRFQ

RMCF0603JT3M00

Stackpole Electronics IncIn Stock: 31730RMCF0603JT3M00 Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following mandatory parameters:

Primary Substitution Criteria:

• Resistance value: 3 MOhms (exact match required)
• Package / Case: 0603 (1608 Metric) (exact match required)
• Power rating: 0.1W / 1/10W (exact match required)
• Composition: Thick Film (exact match required)
• Operating temperature range: -55°C ~ 155°C (exact match or better required)
• RoHS compliance: ROHS3 Compliant (exact match required)

Secondary Substitution Parameters:

• Tolerance: ±5% (direct equivalent) or ±1% (upgrade)
• Temperature coefficient: ±100ppm/°C (direct equivalent) or ±200ppm/°C (acceptable variance)
• Packaging format: Tape & Reel (TR) or Cut Tape (CT) & Digi-Reel® (interchangeable for component selection)
• Moisture resistance features: Present in main part and all qualified substitutes

All substitute parts listed meet or exceed the primary criteria. Parts with ±1% tolerance or automotive AEC-Q200 qualification represent performance upgrades while maintaining full electrical and mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalent (Same Specifications): RC0603JR-073ML (YAGEO) is a direct functional equivalent to RC1608J305CS. Both parts share identical electrical specifications (3 MOhms ±5%, 0.1W, ±100ppm/°C temperature coefficient) and mechanical compatibility (0603 package, -55°C ~ 155°C operating range). The primary difference is packaging format (Cut Tape & Digi-Reel® versus Tape & Reel). This part is suitable for direct substitution in applications where the original Samsung part is unavailable.

Performance Upgrade Options (Enhanced Tolerance): KTR03EZPF3004 (Rohm Semiconductor) and RMCF0603FT3M00 (Stackpole Electronics Inc) both offer ±1% tolerance compared to the ±5% specification of the main part. These upgrades provide tighter resistance accuracy while maintaining all other electrical and mechanical parameters. Both parts carry AEC-Q200 automotive qualification. KTR03EZPF3004 maintains ±100ppm/°C temperature coefficient, while RMCF0603FT3M00 has ±200ppm/°C. These parts are suitable for applications requiring higher precision resistive elements.

Alternative with Acceptable Variance: RMCF0603JT3M00 (Stackpole Electronics Inc) matches the ±5% tolerance of the main part but features ±200ppm/°C temperature coefficient (versus ±100ppm/°C). This represents a minor variance in temperature stability. The part carries AEC-Q200 automotive qualification and is Active status. Selection depends on application temperature stability requirements.

Discontinued Part: MCR03ERTJ305 (Rohm Semiconductor) is marked as Discontinued at DiGi Electronics and should not be selected for new designs or long-term supply requirements, despite meeting all electrical and mechanical specifications.

Frequently Asked Questions (FAQ)

Q: Can RC0603JR-073ML replace RC1608J305CS directly? A: Yes. RC0603JR-073ML is a direct equivalent with identical electrical specifications (3 MOhms ±5%, 0.1W, ±100ppm/°C) and mechanical compatibility (0603 package). The only difference is packaging format (Cut Tape & Digi-Reel® versus Tape & Reel), which does not affect component performance or PCB assembly compatibility.

Q: What is the difference between ±5% and ±1% tolerance parts? A: Tolerance defines the acceptable resistance variation from the nominal 3 MOhms value. ±5% tolerance allows variation between 2.85 MOhms and 3.15 MOhms. ±1% tolerance restricts variation to 2.97 MOhms and 3.03 MOhms. Applications requiring precise resistive values benefit from ±1% parts. General-purpose applications typically function adequately with ±5% tolerance.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All listed substitute parts (RC0603JR-073ML, KTR03EZPF3004, MCR03ERTJ305, RMCF0603FT3M00, RMCF0603JT3M00) are ROHS3 Compliant, matching the compliance status of RC1608J305CS.

Q: What does AEC-Q200 qualification mean? A: AEC-Q200 is an automotive industry standard qualification for passive components. Parts carrying this rating (KTR03EZPF3004, RMCF0603FT3M00, RMCF0603JT3M00) have undergone additional reliability testing and are suitable for automotive applications. Non-automotive applications can also use AEC-Q200 qualified parts without restriction.

Q: Why does MCR03ERTJ305 show "Discontinued at DiGi Electronics"? A: MCR03ERTJ305 is no longer actively distributed through DiGi Electronics, indicating reduced market availability. While the part meets all electrical and mechanical specifications, it should not be selected for new designs or applications requiring long-term supply assurance.

Q: Can I use parts with different temperature coefficients interchangeably? A: Temperature coefficient (±100ppm/°C versus ±200ppm/°C) affects resistance stability across temperature variations. Applications operating across wide temperature ranges or requiring stable resistance values benefit from lower temperature coefficients. For applications with limited temperature variation or non-critical resistance stability, higher temperature coefficients are acceptable. Verify application requirements before selection.

Q: What is Moisture Sensitivity Level (MSL) 1? A: MSL 1 indicates unlimited shelf life without moisture exposure controls. All listed parts carry MSL 1, meaning they do not require special moisture-protective packaging or storage conditions prior to assembly.

Q: Are Tape & Reel and Cut Tape packaging interchangeable? A: Both packaging formats contain identical components. Tape & Reel (TR) is optimized for high-volume automated assembly. Cut Tape (CT) & Digi-Reel® is suitable for lower-volume or mixed-component assembly. Selection depends on assembly equipment and production volume, not component performance.