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RC1608F680CS Equivalent & Substitute Parts Reference
Part Overview
The RC1608F680CS is a 68 Ohm ±1% 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 with moisture-resistant construction and ROHS3 compliance. Equivalent and substitute parts are identified based on matching electrical specifications, mechanical dimensions, and environmental ratings to ensure direct functional interchangeability in circuit applications.
Substiute Parts
Key Parameters
| Parameter | Specification |
|---|---|
| Resistance Value | 68 Ohms |
| Tolerance | ±1% |
| Power Rating | 0.1W (1/10W) |
| Package / Case | 0603 (1608 Metric) |
| Composition | Thick Film |
| Temperature Coefficient | ±100ppm/°C |
| Operating Temperature Range | -55°C to 155°C |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| RoHS Status | ROHS3 Compliant |
| Number of Terminations | 2 |
Substitute Part Grouping Explanation
Substitution eligibility is determined by strict equivalence across the following critical parameters:
Mandatory Matching Parameters:
- Resistance Value: 68 Ohms
- Tolerance: ±1%
- Power Rating: 0.1W (1/10W)
- Package / Case: 0603 (1608 Metric)
- Composition: Thick Film
- Operating Temperature Range: -55°C to 155°C
- Number of Terminations: 2
- RoHS Status: ROHS3 Compliant
- Moisture Sensitivity Level: 1 (Unlimited)
Allowable Variation Parameters:
- Temperature Coefficient: ±100ppm/°C or ±200ppm/°C (within tolerance specification)
- Physical Dimensions: Minor variations within 0603 package standard (length 1.55mm to 1.60mm, width 0.80mm to 0.85mm, height 0.50mm to 0.55mm)
- Packaging Format: Tape & Reel (TR) or Cut Tape (CT) & Digi-Reel®
- Additional Features: Moisture Resistant and/or Automotive AEC-Q200 certification
Substitute parts are classified into three categories: Direct equivalents (identical specifications), Upgrades (enhanced temperature coefficient or additional certifications), and Similar parts (automotive-grade variants with AEC-Q200 rating).
Parameter Comparison
| Manufacturer Part Number | Manufacturer | Resistance | Tolerance | Power (W) | Package | Temp Coeff (ppm/°C) | Op Temp Range | Features | Product Status | RoHS |
|---|---|---|---|---|---|---|---|---|---|---|
| RC1608F680CS | Samsung Electro-Mechanics | 68 Ω | ±1% | 0.1 | 0603 | ±100 | -55 to 155°C | Moisture Resistant | Active | ROHS3 |
| CR0603-FX-68R0ELF | Bourns Inc. | 68 Ω | ±1% | 0.1 | 0603 | ±100 | -55 to 155°C | Moisture Resistant | Active | ROHS3 |
| RC0603FR-0768RL | YAGEO | 68 Ω | ±1% | 0.1 | 0603 | ±100 | -55 to 155°C | Moisture Resistant | Active | ROHS3 |
| CRG0603F68R | TE Connectivity Passive Product | 68 Ω | ±1% | 0.1 | 0603 | ±200 | -55 to 155°C | Thick Film | Active | ROHS3 |
| AC0603FR-0768RL | YAGEO | 68 Ω | ±1% | 0.1 | 0603 | ±100 | -55 to 155°C | Automotive AEC-Q200, Moisture Resistant | Active | ROHS3 |
| CRCW060368R0FKEA | Vishay Dale | 68 Ω | ±1% | 0.1 | 0603 | ±100 | -55 to 155°C | Automotive AEC-Q200 | Active | ROHS3 |
| CRCW060368R0FKEB | Vishay Dale | 68 Ω | ±1% | 0.1 | 0603 | ±100 | -55 to 155°C | Automotive AEC-Q200 | Discontinued at DiGi Electronics | ROHS3 |
| ERJ-3EKF68R0V | Panasonic Electronic Components | 68 Ω | ±1% | 0.1 | 0603 | ±100 | -55 to 155°C | Automotive AEC-Q200 | Active | ROHS3 |
| RMCF0603FT68R0 | Stackpole Electronics Inc | 68 Ω | ±1% | 0.1 | 0603 | ±100 | -55 to 155°C | Automotive AEC-Q200 | Active | ROHS3 |
Engineering Selection Recommendations
Direct Equivalents (Preferred for Standard Applications):
CR0603-FX-68R0ELF (Bourns Inc.) and RC0603FR-0768RL (YAGEO) are direct functional equivalents to RC1608F680CS. Both parts match all critical electrical and mechanical parameters, maintain identical temperature coefficient specifications, and carry Active product status with ROHS3 compliance. These parts are suitable for direct substitution in non-automotive applications requiring standard moisture-resistant thick film resistors.
Upgrade Option (Enhanced Temperature Stability):
CRG0603F68R (TE Connectivity Passive Product) provides equivalent functionality with a relaxed temperature coefficient specification of ±200ppm/°C compared to the standard ±100ppm/°C. This part maintains Active status and ROHS3 compliance. Selection of this upgrade is appropriate when temperature coefficient tolerance is not a critical design constraint.
Automotive-Grade Alternatives (AEC-Q200 Certified):
AC0603FR-0768RL (YAGEO), CRCW060368R0FKEA (Vishay Dale), ERJ-3EKF68R0V (Panasonic Electronic Components), and RMCF0603FT68R0 (Stackpole Electronics Inc) are automotive-qualified variants carrying AEC-Q200 certification. These parts maintain identical electrical specifications and operating temperature ranges. Selection of automotive-grade parts is required for applications subject to automotive industry reliability and qualification standards.
Discontinued Part Status:
CRCW060368R0FKEB (Vishay Dale) is marked as Discontinued at DiGi Electronics. While this part meets all electrical and mechanical specifications, its discontinued status limits long-term availability and supply chain reliability. This part should not be selected for new designs or applications requiring sustained component availability.
Frequently Asked Questions (FAQ)
Q: Can RC1608F680CS be directly replaced with CR0603-FX-68R0ELF?
A: Yes. Both parts are 68 Ohm ±1% thick film resistors in 0603 package with 0.1W power rating, ±100ppm/°C temperature coefficient, and identical operating temperature range (-55°C to 155°C). Electrical and mechanical compatibility is complete.
Q: What is the difference between standard and automotive-grade 68 Ohm 0603 resistors?
A: Automotive-grade parts (AC0603FR-0768RL, CRCW060368R0FKEA, ERJ-3EKF68R0V, RMCF0603FT68R0) carry AEC-Q200 certification, indicating qualification to automotive industry reliability and environmental stress testing standards. Standard parts (RC1608F680CS, CR0603-FX-68R0ELF, RC0603FR-0768RL) do not carry this certification. Electrical specifications remain identical.
Q: Is CRG0603F68R compatible with RC1608F680CS?
A: CRG0603F68R is mechanically and electrically compatible with RC1608F680CS. The primary difference is temperature coefficient specification: CRG0603F68R is rated ±200ppm/°C versus ±100ppm/°C for RC1608F680CS. This part is suitable for substitution in applications where tighter temperature coefficient control is not required.
Q: Why is CRCW060368R0FKEB listed as discontinued?
A: CRCW060368R0FKEB is marked as Discontinued at DiGi Electronics, indicating this specific part number is no longer actively stocked or supported through this distribution channel. CRCW060368R0FKEA remains Active and provides identical specifications.
Q: Can I use automotive-grade resistors in non-automotive applications?
A: Yes. Automotive-grade parts (AEC-Q200 certified) meet or exceed standard industrial specifications. These parts are fully compatible with non-automotive applications and provide additional qualification assurance.
Q: What packaging formats are available for 68 Ohm 0603 resistors?
A: Available packaging formats include Tape & Reel (TR) and Cut Tape (CT) & Digi-Reel®. Both formats contain identical components; packaging selection depends on assembly process requirements and inventory management practices.
Q: Are all listed substitutes ROHS3 compliant?
A: Yes. All parts listed in this reference, including RC1608F680CS and all substitute options, carry ROHS3 compliance certification and Moisture Sensitivity Level 1 (Unlimited) rating.
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