Equivalent & Substitute Parts for RC1608J300CS

Part Overview

The RC1608J300CS is a 30 Ohm ±5% 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 and is RoHS3 compliant with Moisture Sensitivity Level 1 (Unlimited). The part is moisture resistant and suitable for general-purpose applications across industrial and commercial temperature ranges (-55°C to 155°C). Equivalent and substitute parts are identified to provide design flexibility, supply chain alternatives, and performance upgrades where application requirements permit.

Substiute Parts

RC1608J300CS

Samsung Electro-MechanicsIn Stock: 771RC1608J300CS Datasheet

Current PartRFQ

RC0603JR-0730RL

YAGEOIn Stock: 21672RC0603JR-0730RL Datasheet

DirectRFQ

ERJ-3EKF30R0V

Panasonic Electronic ComponentsIn Stock: 112474ERJ-3EKF30R0V Datasheet

UpgradeRFQ

ERJ-3GEYJ300V

Panasonic Electronic ComponentsIn Stock: 126101ERJ-3GEYJ300V Datasheet

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KTR03EZPF30R0

Rohm SemiconductorIn Stock: 10924KTR03EZPF30R0 Datasheet

UpgradeRFQ

RC0603FR-0730RL

YAGEOIn Stock: 90449RC0603FR-0730RL Datasheet

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RMCF0603FT30R0

Stackpole Electronics IncIn Stock: 105010RMCF0603FT30R0 Datasheet

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RMCF0603JT30R0

Stackpole Electronics IncIn Stock: 28100RMCF0603JT30R0 Datasheet

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AC0603JR-0730RL

YAGEOIn Stock: 11124AC0603JR-0730RL Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution logic for the RC1608J300CS is based on the following critical parameters that must remain constant or improve:

Mandatory Matching Parameters:

• Resistance value: 30 Ohms
• Package / Case: 0603 (1608 Metric)
• Power rating: 0.1W (1/10W)
• Composition: Thick Film
• Operating temperature range: -55°C to 155°C
• RoHS3 compliance
• Moisture Sensitivity Level: 1 (Unlimited)

Allowable Variations:

• Tolerance: Can remain ±5% (direct equivalent) or upgrade to ±1% (improved precision)
• Temperature coefficient: Can remain ±100ppm/°C or upgrade to ±200ppm/°C (acceptable for non-precision applications)
• Features: Can add automotive AEC-Q200 certification or high voltage capability without affecting base functionality
• Manufacturer: Different manufacturers acceptable provided all mandatory parameters match

Substitute parts are categorized as Direct Equivalents (matching all parameters) or Upgrades (improved tolerance or added certifications while maintaining core functionality).

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalent (Pin-for-Pin Compatible, No Design Changes Required):

RC0603JR-0730RL (YAGEO) is a direct equivalent to RC1608J300CS. Both parts share identical electrical specifications (30 Ohms ±5%, 0.1W), package format (0603), temperature coefficient (±100ppm/°C), and moisture resistance features. Both are RoHS3 compliant with MSL 1. This part is suitable for direct substitution in existing designs without circuit modification.

Upgrade Options (Improved Performance, Design Verification Recommended):

Parts with ±1% tolerance provide improved precision compared to the ±5% specification of RC1608J300CS. These include:

• RC0603FR-0730RL (YAGEO): Maintains moisture resistance feature with tighter tolerance
• ERJ-3EKF30R0V (Panasonic): Adds automotive AEC-Q200 certification with ±1% tolerance
• KTR03EZPF30R0 (Rohm Semiconductor): Adds automotive AEC-Q200 and high voltage capability with ±1% tolerance
• RMCF0603FT30R0 (Stackpole Electronics Inc): Adds automotive AEC-Q200 certification with ±1% tolerance

Parts with automotive AEC-Q200 certification provide enhanced reliability qualification for automotive and harsh environment applications:

• ERJ-3GEYJ300V (Panasonic): Maintains ±5% tolerance with AEC-Q200 certification
• RMCF0603JT30R0 (Stackpole Electronics Inc): Maintains ±5% tolerance with AEC-Q200 certification
• AC0603JR-0730RL (YAGEO): Combines ±5% tolerance with both AEC-Q200 and moisture resistance features

All substitute parts maintain RoHS3 compliance, MSL 1 rating, and operating temperature range (-55°C to 155°C) of the original part.

Frequently Asked Questions (FAQ)

Q: Can RC0603JR-0730RL replace RC1608J300CS in my circuit?

A: Yes. RC0603JR-0730RL is a direct equivalent. Both parts have identical resistance (30 Ohms), tolerance (±5%), power rating (0.1W), package (0603), and operating temperature range (-55°C to 155°C). No circuit modifications are required.

Q: What is the difference between the ±5% and ±1% tolerance options?

A: Tolerance defines the acceptable resistance variation from the nominal 30 Ohm value. RC1608J300CS with ±5% tolerance allows resistance between 28.5 and 31.5 Ohms. Upgrade parts with ±1% tolerance (RC0603FR-0730RL, ERJ-3EKF30R0V, KTR03EZPF30R0, RMCF0603FT30R0) allow resistance between 29.7 and 30.3 Ohms. Use ±1% parts only if your circuit design requires tighter resistance control.

Q: What does AEC-Q200 certification mean?

A: AEC-Q200 is an automotive qualification standard that certifies components for use in automotive applications. Parts with this certification (ERJ-3EKF30R0V, ERJ-3GEYJ300V, KTR03EZPF30R0, RMCF0603FT30R0, AC0603JR-0730RL) have undergone additional reliability testing. Use these parts if your application requires automotive-grade components or operates in harsh environments.

Q: Are all substitute parts in the same 0603 package?

A: Yes. All listed substitute parts use the 0603 (1608 Metric) package format. Physical dimensions are 0.063" L x 0.031" W (1.60mm x 0.80mm) with maximum seated height of 0.022" (0.55mm). RMCF series parts have slightly different length (0.061" vs 0.063") but remain within 0603 package specification and are mechanically compatible.

Q: Can I use a ±1% tolerance part as a drop-in replacement for ±5%?

A: Yes. A ±1% tolerance part is a performance upgrade and will function correctly in any circuit designed for ±5% tolerance. The tighter tolerance provides better precision but does not affect basic functionality or compatibility.

Q: What is the difference between moisture resistant and non-moisture resistant versions?

A: RC1608J300CS, RC0603JR-0730RL, RC0603FR-0730RL, and AC0603JR-0730RL explicitly feature moisture resistance. All listed parts maintain MSL 1 (Unlimited) rating, indicating they do not require special moisture control during storage or handling. Moisture resistance is an additional feature that provides enhanced protection in humid environments.

Q: Which substitute part should I choose for general industrial applications?

A: RC0603JR-0730RL (YAGEO) is the recommended direct equivalent for general industrial use. It matches all specifications of RC1608J300CS and offers high inventory availability (21,567 pcs). If moisture resistance is critical, this part explicitly includes that feature.

Q: Can I use KTR03EZPF30R0 in place of RC1608J300CS?

A: Yes. KTR03EZPF30R0 is compatible and provides performance upgrades: ±1% tolerance (vs ±5%), automotive AEC-Q200 certification, and high voltage capability. All core parameters (30 Ohms, 0.1W, 0603 package, -55°C to 155°C) match the original part. Use this part if your application benefits from higher precision or automotive qualification.

Q: What is the temperature coefficient and why does it matter?

A: Temperature coefficient (±100ppm/°C or ±200ppm/°C) specifies how much the resistance changes with temperature. RC1608J300CS has ±100ppm/°C, meaning resistance changes by approximately 0.01% per degree Celsius. Most substitute parts maintain this specification. ERJ-3GEYJ300V and RMCF0603JT30R0 have ±200ppm/°C, which is acceptable for non-precision applications but should be verified if your circuit operates across wide temperature ranges.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts are RoHS3 compliant, matching the compliance status of RC1608J300CS. All parts are also REACH Unaffected and classified as EAR99 for export purposes.