RCS2012J185CS Equivalent & Substitute Parts Reference

Part Overview

The RCS2012J185CS is a 1.8 MOhms ±5% thick film chip resistor manufactured by Samsung Electro-Mechanics in 0805 (2012 Metric) package format. This component is rated for 0.125W (1/8W) power dissipation and is designed with anti-sulfur and moisture-resistant properties. The part maintains Active product status with 743 units currently in stock.

Substitute parts are identified when electrical specifications (resistance value, tolerance, power rating, temperature coefficient, operating temperature range) and mechanical specifications (package type, dimensions, termination count) align with the main part. Tolerance variations and feature enhancements (such as automotive qualification or high voltage capability) define substitute relationships within this product category.

Substiute Parts

RCS2012J185CS

Samsung Electro-MechanicsIn Stock: 828RCS2012J185CS Datasheet

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RC2012F185CS

Samsung Electro-MechanicsIn Stock: 1278RC2012F185CS Datasheet

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CHV0805-FX-1804ELF

Bourns Inc.In Stock: 735CHV0805-FX-1804ELF Datasheet

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CRCW08051M80FKEA

Vishay DaleIn Stock: 10168CRCW08051M80FKEA Datasheet

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ERJ-6ENF1804V

Panasonic Electronic ComponentsIn Stock: 50901ERJ-6ENF1804V Datasheet

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KTR10EZPF1804

Rohm SemiconductorIn Stock: 10612KTR10EZPF1804 Datasheet

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RC0805FR-071M8L

YAGEOIn Stock: 59265RC0805FR-071M8L Datasheet

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RC0805JR-071M8L

YAGEOIn Stock: 5973RC0805JR-071M8L Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RCS2012J185CS are classified based on strict alignment of the following critical parameters:

Electrical Compatibility Requirements:

• Resistance value: 1.8 MOhms (exact match required)
• Power rating: 0.125W / 1/8W (exact match required)
• Temperature coefficient: ±100ppm/°C (exact match required)
• Operating temperature range: -55°C ~ 155°C (exact match required)

Mechanical Compatibility Requirements:

• Package type: 0805 (2012 Metric) (exact match required)
• Dimensions: 0.079" L x 0.049" W / 2.00mm x 1.25mm (exact match required)
• Number of terminations: 2 (exact match required)

Regulatory & Environmental Requirements:

• RoHS3 Compliance (required)
• Moisture Sensitivity Level: 1 (Unlimited) (required)

Tolerance Variations: Substitute parts with ±1% tolerance are functionally compatible with the ±5% main part, as tighter tolerance represents enhanced performance within the same electrical specification envelope.

Feature Enhancements: Substitute parts may include additional features (Automotive AEC-Q200 qualification, High Voltage capability, Anti-Sulfur properties) without compromising substitution eligibility, provided all core electrical and mechanical parameters remain identical.

Parameter Comparison

Engineering Selection Recommendations

Direct Substitution (Identical Tolerance ±5%):

RC0805JR-071M8L (YAGEO) is the only substitute part with matching ±5% tolerance specification. This part maintains identical electrical performance characteristics and is suitable for direct replacement in applications where the original ±5% tolerance specification is required. ROHS3 compliance and MSL 1 rating are confirmed.

Enhanced Substitution (Tighter Tolerance ±1%):

The following parts feature ±1% tolerance, representing tighter specification control while maintaining all core electrical and mechanical compatibility:

• RC2012F185CS (Samsung Electro-Mechanics): Same manufacturer as main part; ±1% tolerance; higher inventory availability (1247 Pcs)
• RC0805FR-071M8L (YAGEO): ±1% tolerance; highest inventory availability (59253 Pcs); moisture resistant
• CHV0805-FX-1804ELF (Bourns Inc.): ±1% tolerance; high voltage feature; 693 Pcs available
• CRCW08051M80FKEA (Vishay Dale): ±1% tolerance; Automotive AEC-Q200 qualified; 10079 Pcs available
• ERJ-6ENF1804V (Panasonic Electronic Components): ±1% tolerance; Automotive AEC-Q200 qualified; 50795 Pcs available
• KTR10EZPF1804 (Rohm Semiconductor): ±1% tolerance; Automotive AEC-Q200 and High Voltage features; 10576 Pcs available

All substitute parts maintain identical operating temperature range (-55°C ~ 155°C), temperature coefficient (±100ppm/°C), power rating (0.125W), package dimensions (0805 / 2.00mm x 1.25mm), and regulatory compliance (ROHS3, MSL 1).

Application-Specific Selection:

For automotive applications requiring AEC-Q200 qualification, select from: CRCW08051M80FKEA, ERJ-6ENF1804V, or KTR10EZPF1804.

For high-voltage circuit applications, select from: CHV0805-FX-1804ELF or KTR10EZPF1804.

For general industrial applications with standard voltage requirements, RC0805FR-071M8L or RC2012F185CS provide optimal availability and performance.

Frequently Asked Questions (FAQ)

Q: Can I substitute a ±1% tolerance part for the ±5% RCS2012J185CS?

A: Yes. The ±1% tolerance specification is tighter than ±5%, meaning the part will perform within the original tolerance band. All ±1% substitute parts listed maintain identical electrical and mechanical specifications required for functional compatibility.

Q: What is the difference between the main part (RCS2012J185CS) and RC2012F185CS?

A: Both are 1.8 MOhms, 0.125W, 0805 package resistors from Samsung Electro-Mechanics. The primary difference is tolerance: RCS2012J185CS is ±5%, while RC2012F185CS is ±1%. RC2012F185CS also lacks the anti-sulfur feature but retains moisture resistance. Both are ROHS3 compliant with identical operating temperature range.

Q: Are automotive-qualified parts (AEC-Q200) suitable for non-automotive applications?

A: Yes. Automotive AEC-Q200 qualification represents enhanced reliability testing and quality assurance. These parts exceed standard industrial requirements and are fully compatible with non-automotive applications. CRCW08051M80FKEA, ERJ-6ENF1804V, and KTR10EZPF1804 are suitable for any application requiring 1.8 MOhms, 0.125W, 0805 package resistors.

Q: What does "High Voltage" feature mean for CHV0805-FX-1804ELF and KTR10EZPF1804?

A: High voltage thick film resistors are designed to withstand higher voltage stress without performance degradation. These parts are suitable for circuits operating at elevated voltage levels. If your application does not require high voltage capability, standard parts (RC0805FR-071M8L, RC2012F185CS) are equally compatible.

Q: Can I use parts with different heights (0.50mm to 0.70mm) interchangeably?

A: Yes, within the 0805 package standard. All listed substitute parts conform to 0805 (2012 Metric) package specifications with maximum seated heights ranging from 0.50mm to 0.70mm. These variations are within standard PCB assembly tolerances and do not affect electrical performance or mechanical fit in standard 0805 footprints.

Q: Which substitute part has the highest inventory availability?

A: ERJ-6ENF1804V (Panasonic Electronic Components) has the highest inventory with 50795 Pcs in stock, followed by RC0805FR-071M8L (YAGEO) with 59253 Pcs. Both are ±1% tolerance, ROHS3 compliant, and suitable for immediate deployment.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed in this reference maintain ROHS3 compliance and Moisture Sensitivity Level 1 (Unlimited), matching the regulatory status of the main part RCS2012J185CS.

Q: What is Moisture Sensitivity Level (MSL) 1?

A: MSL 1 indicates unlimited shelf life without moisture absorption concerns. The component does not require special moisture-controlled storage or baking procedures prior to assembly, simplifying inventory management and reducing handling complexity.