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RC1608F1872CS Equivalent & Substitute Parts Reference
Part Overview
The RC1608F1872CS is a 18.7 kOhms ±1% thick film chip resistor manufactured by Samsung Electro-Mechanics, rated at 0.1W (1/10W) power dissipation in a 0603 (1608 Metric) surface mount package. This component is classified as Active product status with ROHS3 compliance and unlimited moisture sensitivity level (MSL 1). The RC1608F1872CS serves in general-purpose applications requiring precision resistive elements with moisture resistance. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity when the primary part becomes unavailable or when design requirements necessitate alternative qualified sources.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Resistance | 18.7 | kOhms |
| Tolerance | ±1 | % |
| Power Rating | 0.1 | W (1/10W) |
| Package / Case | 0603 (1608 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 | — |
| Packaging | Tape & Reel (TR) | — |
Substitute Part Grouping Explanation
Substitute parts for the RC1608F1872CS are qualified based on strict electrical and mechanical parameter alignment. All substitute candidates must satisfy the following criteria:
Mandatory Matching Parameters:
- Resistance value: 18.7 kOhms
- Tolerance: ±1%
- Power rating: 0.1W (1/10W)
- Package: 0603 (1608 Metric)
- Composition: Thick Film
- Temperature coefficient: ±100 ppm/°C
- Operating temperature range: -55°C to 155°C
- Moisture sensitivity level: 1 (Unlimited)
- RoHS compliance: ROHS3 Compliant
- Packaging format: Tape & Reel (TR)
Substitute parts are categorized into two groups:
Direct Substitutes (Functionally Identical): Parts meeting all mandatory parameters without additional qualifications. These include CR0603-FX-1872ELF (Bourns Inc.) and RC0603FR-0718K7L (YAGEO). These parts are interchangeable in applications where general-purpose thick film resistors are specified.
Similar Substitutes (Enhanced Qualifications): Parts meeting all mandatory parameters with additional automotive-grade certifications (AEC-Q200). These include AC0603FR-0718K7L (YAGEO), CRCW060318K7FKEA (Vishay Dale), ERJ-3EKF1872V (Panasonic Electronic Components), and RMCF0603FT18K7 (Stackpole Electronics Inc.). These parts are suitable for applications requiring automotive-grade reliability and are backward-compatible with general-purpose designs.
Parameter Comparison
| Manufacturer Part Number | Manufacturer | Resistance (kOhms) | Tolerance (%) | Power (W) | Package | Temp Coeff (ppm/°C) | Op Temp (°C) | MSL | RoHS | AEC-Q200 | Inventory (Pcs) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| RC1608F1872CS | Samsung Electro-Mechanics | 18.7 | ±1 | 0.1 | 0603 | ±100 | -55 to 155 | 1 | ROHS3 | — | 960 |
| CR0603-FX-1872ELF | Bourns Inc. | 18.7 | ±1 | 0.1 | 0603 | ±100 | -55 to 155 | 1 | ROHS3 | — | 24572 |
| RC0603FR-0718K7L | YAGEO | 18.7 | ±1 | 0.1 | 0603 | ±100 | -55 to 155 | 1 | ROHS3 | — | 60126 |
| AC0603FR-0718K7L | YAGEO | 18.7 | ±1 | 0.1 | 0603 | ±100 | -55 to 155 | 1 | ROHS3 | Yes | 13296 |
| CRCW060318K7FKEA | Vishay Dale | 18.7 | ±1 | 0.1 | 0603 | ±100 | -55 to 155 | 1 | ROHS3 | Yes | 31387 |
| ERJ-3EKF1872V | Panasonic Electronic Components | 18.7 | ±1 | 0.1 | 0603 | ±100 | -55 to 155 | 1 | ROHS3 | Yes | 110459 |
| RMCF0603FT18K7 | Stackpole Electronics Inc | 18.7 | ±1 | 0.1 | 0603 | ±100 | -55 to 155 | 1 | ROHS3 | Yes | 40901 |
Engineering Selection Recommendations
For General-Purpose Applications: CR0603-FX-1872ELF (Bourns Inc.) and RC0603FR-0718K7L (YAGEO) are direct functional equivalents to the RC1608F1872CS. Both parts maintain identical electrical specifications, package dimensions, and compliance certifications. Selection between these options is based on inventory availability and procurement lead times. CR0603-FX-1872ELF offers 24,572 units in stock, while RC0603FR-0718K7L provides 60,126 units, supporting high-volume procurement requirements.
For Automotive and Enhanced Reliability Applications: AC0603FR-0718K7L (YAGEO), CRCW060318K7FKEA (Vishay Dale), ERJ-3EKF1872V (Panasonic Electronic Components), and RMCF0603FT18K7 (Stackpole Electronics Inc.) are qualified to AEC-Q200 automotive standards. These parts are suitable for designs requiring automotive-grade component qualification and are backward-compatible with general-purpose applications. ERJ-3EKF1872V provides the highest inventory level at 110,459 units, followed by RMCF0603FT18K7 at 40,901 units.
Compliance and Regulatory Considerations: All substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, ensuring compatibility with current environmental and regulatory requirements. REACH status is unaffected for all listed parts.
Frequently Asked Questions (FAQ)
Q1: Can I use an AEC-Q200 qualified part as a substitute for the RC1608F1872CS in a non-automotive application?
A: Yes. AEC-Q200 qualified parts (AC0603FR-0718K7L, CRCW060318K7FKEA, ERJ-3EKF1872V, RMCF0603FT18K7) meet or exceed the electrical and mechanical specifications of the RC1608F1872CS and are backward-compatible with general-purpose designs. Automotive qualification represents an additional quality assurance level and does not restrict use in non-automotive applications.
Q2: Are there dimensional differences between the RC1608F1872CS and its substitutes?
A: The RC1608F1872CS, CR0603-FX-1872ELF, RC0603FR-0718K7L, AC0603FR-0718K7L, ERJ-3EKF1872V, and RMCF0603FT18K7 all conform to the 0603 (1608 Metric) package standard. Minor dimensional variations exist within manufacturing tolerances: most parts measure 0.063" L x 0.031" W (1.60mm x 0.80mm), while CRCW060318K7FKEA and RMCF0603FT18K7 measure 0.061" L x 0.031" W (1.55mm x 0.80mm) and 0.061" L x 0.031" W (1.55mm x 0.80mm) respectively. These variations remain within standard 0603 package tolerances and do not affect PCB footprint compatibility.
Q3: What is the difference between "Direct Substitutes" and "Similar Substitutes"?
A: Direct substitutes (CR0603-FX-1872ELF, RC0603FR-0718K7L) match all electrical and mechanical parameters of the RC1608F1872CS without additional qualifications. Similar substitutes (AC0603FR-0718K7L, CRCW060318K7FKEA, ERJ-3EKF1872V, RMCF0603FT18K7) include AEC-Q200 automotive certification in addition to matching all base parameters. Both categories are functionally equivalent; selection depends on application requirements and supply chain considerations.
Q4: Do all substitute parts have the same moisture sensitivity level?
A: Yes. All listed substitute parts maintain MSL 1 (Unlimited) moisture sensitivity level, identical to the RC1608F1872CS. This classification indicates no moisture-related handling restrictions during storage, transport, or assembly.
Q5: Which substitute part offers the best inventory availability?
A: ERJ-3EKF1872V (Panasonic Electronic Components) provides the highest inventory level at 110,459 units in stock. RC0603FR-0718L (YAGEO) offers 60,126 units, and RMCF0603FT18K7 (Stackpole Electronics Inc.) provides 40,901 units. Inventory levels support procurement planning for both standard and high-volume production requirements.
Q6: Are all substitute parts ROHS3 compliant?
A: Yes. All listed substitute parts, including the RC1608F1872CS, maintain ROHS3 compliance and REACH unaffected status, ensuring compatibility with current environmental regulations and supply chain requirements.
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