RC1005J112CS Equivalent & Substitute Parts Reference

Part Overview

The RC1005J112CS is a 1.1 kOhms ±5% thick film chip resistor manufactured by Samsung Electro-Mechanics in 0402 (1005 Metric) package format. This surface mount device is rated for 0.063W (1/16W) power dissipation with moisture resistant construction and operates across the temperature range of -55°C to 155°C. The part is currently active in production with 1142 units in stock and carries ROHS3 compliance certification.

Equivalent and substitute parts are necessary when the original manufacturer part becomes unavailable, when design requirements demand enhanced specifications such as improved tolerance or higher power ratings, or when supply chain optimization requires sourcing from alternative manufacturers while maintaining electrical and mechanical compatibility.

Key Parameters

Parameter	Value	Unit
Resistance	1.1	kOhms
Tolerance	±5%	-
Power Rating	0.063	W (1/16W)
Package / Case	0402 (1005 Metric)	-
Composition	Thick Film	-
Temperature Coefficient	±100	ppm/°C
Operating Temperature Range	-55 to 155	°C
Moisture Sensitivity Level	1 (Unlimited)	-
RoHS Status	ROHS3 Compliant	-
Number of Terminations	2	-

Substitute Part Grouping Explanation

Substitution compatibility for the RC1005J112CS is determined by the following critical parameters: resistance value (1.1 kOhms), package format (0402 / 1005 Metric), number of terminations (2), operating temperature range (-55°C to 155°C), and composition (thick film).

Substitute parts are categorized into three groups:

Direct Equivalents maintain identical electrical specifications: 1.1 kOhms resistance, ±5% tolerance, 0.063W power rating, and moisture resistant properties. These parts are pin-compatible and functionally interchangeable without circuit modification.

Upgrade Substitutes offer improved tolerance (±1% instead of ±5%) or enhanced power ratings (0.1W instead of 0.063W) while maintaining the same 1.1 kOhms resistance value and 0402 package. These parts provide superior performance characteristics and are backward compatible with designs specified for the original part.

Similar Alternatives match the core electrical parameters but may include additional features such as automotive AEC-Q200 certification. These parts are suitable for applications where enhanced environmental or reliability specifications are beneficial.

All substitute parts listed maintain ROHS3 compliance, MSL Level 1 rating, and the same physical dimensions (0.039" L x 0.020" W / 1.00mm x 0.50mm).

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff (ppm/°C)	Op Temp Range (°C)	Features	Product Status
RC1005J112CS	Samsung Electro-Mechanics	1.1 kOhms	±5%	0.063	0402	±100	-55 to 155	Moisture Resistant	Active
RC0402JR-071K1L	YAGEO	1.1 kOhms	±5%	0.063	0402	±100	-55 to 155	Moisture Resistant	Active
CRG0402F1K1	TE Connectivity Passive Product	1.1 kOhms	±1%	0.063	0402	±100	-55 to 155	-	Active
ERJ-2RKF1101X	Panasonic Electronic Components	1.1 kOhms	±1%	0.1	0402	±100	-55 to 155	Automotive AEC-Q200	Active
MCR01MRTF1101	Rohm Semiconductor	1.1 kOhms	±1%	0.063	0402	±100	-55 to 155	-	Discontinued at DiGi Electronics
RC0402FR-071K1L	YAGEO	1.1 kOhms	±1%	0.063	0402	±100	-55 to 155	Moisture Resistant	Active
RMCF0402FT1K10	Stackpole Electronics Inc	1.1 kOhms	±1%	0.063	0402	±100	-55 to 155	Automotive AEC-Q200	Active
AC0402JR-071K1L	YAGEO	1.1 kOhms	±5%	0.063	0402	±100	-55 to 155	Automotive AEC-Q200, Moisture Resistant	Active
RMCF0402JT1K10	Stackpole Electronics Inc	1.1 kOhms	±5%	0.063	0402	±100	-55 to 155	Automotive AEC-Q200	Active

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications): RC0402JR-071K1L from YAGEO is the primary direct equivalent, offering identical electrical and mechanical specifications with 435,630 units in stock. This part maintains the ±5% tolerance, 0.063W power rating, and moisture resistant construction of the original RC1005J112CS.

For Enhanced Tolerance Applications: RC0402FR-071K1L (YAGEO), CRG0402F1K1 (TE Connectivity), and RMCF0402FT1K10 (Stackpole) provide ±1% tolerance while maintaining 0.063W power rating and 0402 package compatibility. These upgrades are suitable for circuits requiring tighter resistance accuracy. RC0402FR-071K1L and RMCF0402FT1K10 are both currently in active production with substantial inventory availability (570,100 and 80,152 units respectively).

For Automotive Applications: ERJ-2RKF1101X (Panasonic), RMCF0402FT1K10 (Stackpole), AC0402JR-071K1L (YAGEO), and RMCF0402JT1K10 (Stackpole) carry AEC-Q200 automotive certification. ERJ-2RKF1101X additionally offers 0.1W power rating for applications requiring higher power dissipation capability.

Parts to Avoid: MCR01MRTF1101 (Rohm Semiconductor) is discontinued at DiGi Electronics and should not be selected for new designs despite its ±1% tolerance specification.

All recommended active parts maintain ROHS3 compliance and MSL Level 1 moisture sensitivity rating, ensuring compatibility with standard PCB assembly processes.

Frequently Asked Questions (FAQ)

Q: Can RC0402JR-071K1L directly replace RC1005J112CS without circuit modification?

A: Yes. RC0402JR-071K1L is a direct equivalent with identical resistance (1.1 kOhms), tolerance (±5%), power rating (0.063W), package (0402), and operating temperature range (-55°C to 155°C). No circuit changes are required.

Q: What is the difference between ±5% and ±1% tolerance parts, and when should I use each?

A: Tolerance specifies the maximum deviation from the nominal resistance value. ±5% tolerance allows resistance variation of ±55 ohms from 1.1 kOhms (1.045 to 1.155 kOhms). ±1% tolerance restricts variation to ±11 ohms (1.089 to 1.111 kOhms). Use ±1% tolerance parts in precision circuits where tight resistance accuracy affects circuit performance, such as timing networks, sensor interfaces, or feedback networks. Use ±5% tolerance parts in general-purpose applications where resistance value is non-critical.

Q: Can I use ERJ-2RKF1101X (0.1W) in place of RC1005J112CS (0.063W)?

A: Yes. ERJ-2RKF1101X has higher power rating (0.1W vs 0.063W), making it suitable for applications requiring greater power dissipation. The higher power rating does not create compatibility issues in circuits designed for 0.063W. However, the physical dimensions differ slightly (height 0.016" vs 0.015"), which may affect PCB layout in space-constrained designs.

Q: What does AEC-Q200 certification mean?

A: AEC-Q200 is an automotive qualification standard for passive components. Parts carrying this certification (ERJ-2RKF1101X, RMCF0402FT1K10, AC0402JR-071K1L, RMCF0402JT1K10) have undergone enhanced reliability testing for automotive applications. These parts are suitable for both automotive and general industrial applications.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All parts listed in this reference maintain ROHS3 compliance and MSL Level 1 moisture sensitivity rating, ensuring compatibility with standard lead-free PCB assembly processes and storage conditions.

Q: What is the significance of "Moisture Resistant" feature?

A: Moisture resistant construction provides enhanced protection against moisture absorption during storage and assembly. Parts with this feature (RC1005J112CS, RC0402JR-071K1L, RC0402FR-071K1L, AC0402JR-071K1L) are preferred for applications in humid environments or where extended storage before assembly is anticipated.

Q: Can I substitute a part with different packaging (Tape & Reel vs Cut Tape)?

A: Packaging format (Tape & Reel or Cut Tape) affects supply and handling but does not impact electrical or mechanical compatibility. Parts with different packaging formats are electrically and mechanically interchangeable. Select packaging based on assembly equipment requirements and order quantity.

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