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RC1005F2612CS Equivalent & Substitute Parts Reference
Part Overview
The RC1005F2612CS is a 26.1 kOhms ±1% 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 characteristics and operates across the temperature range of -55°C to 155°C. The part is currently in active production status with ROHS3 compliance and unlimited moisture sensitivity level (MSL 1). Equivalent and substitute parts are identified to support procurement flexibility, design optimization, and supply chain continuity.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Resistance | 26.1 | kOhms |
| Tolerance | ±1 | % |
| Power Rating | 0.063 (1/16W) | Watts |
| Package / Case | 0402 (1005 Metric) | — |
| Composition | Thick Film | — |
| Temperature Coefficient | ±100 | ppm/°C |
| Operating Temperature Range | -55 to 155 | °C |
| Size / Dimension | 1.00 x 0.50 | mm |
| Height - Seated (Max) | 0.40 | mm |
| Number of Terminations | 2 | — |
| RoHS Status | ROHS3 Compliant | — |
| Moisture Sensitivity Level | 1 (Unlimited) | — |
Substitute Part Grouping Explanation
Substitution eligibility is determined by strict equivalence across the following critical parameters: resistance value (26.1 kOhms), tolerance (±1%), package format (0402 / 1005 Metric), composition (thick film), temperature coefficient (±100ppm/°C), operating temperature range (-55°C to 155°C), and termination count (2). Power rating equivalence is maintained at 0.063W (1/16W) for direct substitutes, with one upgrade option rated at 0.1W (1/10W). All substitute parts maintain ROHS3 compliance, MSL 1 rating, and identical mechanical dimensions within specified tolerances. Substitutes are grouped as follows:
Direct Equivalents: Parts with identical electrical specifications, power rating, and feature sets.
Upgrade Option: Part with higher power rating (0.1W vs. 0.063W) and automotive AEC-Q200 certification, suitable for applications requiring enhanced thermal margin.
Similar Parts: Parts with identical core electrical specifications but enhanced features (automotive AEC-Q200 certification, anti-sulfur treatment, or moisture resistance variants) or minor compliance variations.
Parameter Comparison
| Manufacturer Part Number | Manufacturer | Resistance (kOhms) | Tolerance (%) | Power (W) | Package | Temp Coeff (ppm/°C) | Op Temp (°C) | Features | RoHS Status | Inventory (Pcs) |
|---|---|---|---|---|---|---|---|---|---|---|
| RC1005F2612CS | Samsung Electro-Mechanics | 26.1 | ±1 | 0.063 | 0402 | ±100 | -55 to 155 | Moisture Resistant | ROHS3 | 908 |
| CR0402-FX-2612GLF | Bourns Inc. | 26.1 | ±1 | 0.063 | 0402 | ±100 | -55 to 155 | — | ROHS3 | 61476 |
| RC0402FR-0726K1L | YAGEO | 26.1 | ±1 | 0.063 | 0402 | ±100 | -55 to 155 | Moisture Resistant | ROHS3 | 629422 |
| ERJ-2RKF2612X | Panasonic Electronic Components | 26.1 | ±1 | 0.1 | 0402 | ±100 | -55 to 155 | Automotive AEC-Q200 | ROHS3 | 239322 |
| AC0402FR-0726K1L | YAGEO | 26.1 | ±1 | 0.063 | 0402 | ±100 | -55 to 155 | Automotive AEC-Q200, Moisture Resistant | ROHS3 | 998 |
| AF0402FR-0726K1L | YAGEO | 26.1 | ±1 | 0.063 | 0402 | ±100 | -55 to 155 | Anti-Sulfur, Automotive AEC-Q200 | ROHS3 | 20830 |
| CRCW040226K1FKED | Vishay Dale | 26.1 | ±1 | 0.063 | 0402 | ±100 | -55 to 155 | Automotive AEC-Q200 | ROHS3 | 71645 |
| CRCW040226K1FKTD | Vishay Dale | 26.1 | ±1 | 0.063 | 0402 | ±100 | -55 to 155 | Automotive AEC-Q200 | RoHS non-compliant | 10562 |
| RMCF0402FT26K1 | Stackpole Electronics Inc | 26.1 | ±1 | 0.063 | 0402 | ±100 | -55 to 155 | Automotive AEC-Q200 | ROHS3 | 76111 |
Engineering Selection Recommendations
For Standard Industrial Applications: RC0402FR-0726K1L (YAGEO) or CR0402-FX-2612GLF (Bourns Inc.) provide direct electrical equivalence with high inventory availability and ROHS3 compliance. Both maintain moisture resistant characteristics and identical thermal performance to the primary part.
For Automotive Applications: AC0402FR-0726K1L, AF0402FR-0726K1L (YAGEO), CRCW040226K1FKED (Vishay Dale), or RMCF0402FT26K1 (Stackpole Electronics Inc.) are qualified to AEC-Q200 automotive standards. AF0402FR-0726K1L includes anti-sulfur treatment for enhanced environmental resistance. All maintain ROHS3 compliance.
For Enhanced Thermal Performance: ERJ-2RKF2612X (Panasonic Electronic Components) offers 0.1W power rating with AEC-Q200 qualification, providing increased thermal margin while maintaining identical resistance, tolerance, and temperature coefficient specifications.
Compliance Consideration: CRCW040226K1FKTD is RoHS non-compliant and REACH-affected; selection should be restricted to applications where legacy component specifications are mandated.
Frequently Asked Questions (FAQ)
Q: Can RC0402FR-0726K1L directly replace RC1005F2612CS in all applications?
A: Yes. RC0402FR-0726K1L matches all critical electrical parameters: 26.1 kOhms ±1% resistance, 0.063W power rating, ±100ppm/°C temperature coefficient, -55°C to 155°C operating range, and 0402 package format. Both include moisture resistant characteristics and maintain ROHS3 compliance.
Q: What is the difference between the standard substitute and ERJ-2RKF2612X?
A: ERJ-2RKF2612X is rated for 0.1W (1/10W) power dissipation compared to 0.063W (1/16W) for the primary part. All other electrical specifications remain identical. The higher power rating provides increased thermal margin and is suitable for applications requiring enhanced reliability under thermal stress. AEC-Q200 automotive qualification is included.
Q: Are all substitute parts suitable for automotive applications?
A: No. Only AC0402FR-0726K1L, AF0402FR-0726K1L, CRCW040226K1FKED, CRCW040226K1FKTD, and ERJ-2RKF2612X carry AEC-Q200 automotive qualification. CR0402-FX-2612GLF and RC0402FR-0726K1L are suitable for industrial and consumer applications.
Q: Why is CRCW040226K1FKTD marked as RoHS non-compliant?
A: CRCW040226K1FKTD does not meet ROHS3 compliance requirements and is REACH-affected. This part should be selected only when legacy component specifications or specific supply chain requirements mandate its use. CRCW040226K1FKED is the ROHS3-compliant equivalent from the same manufacturer.
Q: Do all substitute parts have identical physical dimensions?
A: All substitute parts conform to 0402 (1005 Metric) package specifications with 1.00mm length and 0.50mm width. Maximum seated height is 0.40mm for most parts, with AC0402FR-0726K1L and AF0402FR-0726K1L at 0.37mm maximum. These minor height variations remain within standard PCB assembly tolerances.
Q: What inventory levels should be considered for procurement?
A: RC0402FR-0726K1L (YAGEO) offers the highest inventory at 629,422 pieces. CR0402-FX-2612GLF (Bourns Inc.) provides 61,476 pieces. RMCF0402FT26K1 (Stackpole Electronics Inc.) has 76,111 pieces available. The primary part RC1005F2612CS has 908 pieces in stock. Selection should account for lead time requirements and supply chain continuity.
Q: Can AF0402FR-0726K1L be used in corrosive environments?
A: AF0402FR-0726K1L includes anti-sulfur treatment in addition to moisture resistance and AEC-Q200 qualification, making it suitable for applications exposed to sulfur-containing atmospheres or corrosive industrial environments. Standard moisture-resistant variants lack this specific feature.
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