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RCS3216F125CS Equivalent & Substitute Parts
Part Overview
The RCS3216F125CS is a 1.2 MOhms ±1% 0.25W thick film chip resistor in 1206 (3216 Metric) package manufactured by Samsung Electro-Mechanics. This component features anti-sulfur and moisture-resistant construction with an operating temperature range of -55°C to 155°C. The part is currently active in production with 1044 units in stock. Substitute parts are identified for applications requiring alternative sourcing, inventory management, or specific compliance certifications such as automotive AEC-Q200 qualification.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Resistance | 1.2 MOhms |
| Tolerance | ±1% |
| Power Rating | 0.25W (1/4W) |
| Package / Case | 1206 (3216 Metric) |
| Composition | Thick Film |
| Temperature Coefficient | ±100ppm/°C |
| Operating Temperature Range | -55°C to 155°C |
| Number of Terminations | 2 |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution of the RCS3216F125CS is determined by strict equivalence across the following electrical and mechanical parameters:
Electrical Parameters:
- Resistance value: 1.2 MOhms
- Tolerance: ±1%
- Power rating: 0.25W (1/4W)
- Temperature coefficient: ±100ppm/°C
- Operating temperature range: -55°C to 155°C
Mechanical Parameters:
- Package type: 1206 (3216 Metric)
- Number of terminations: 2
- Physical dimensions compatible with 1206 footprint
Compliance Parameters:
- RoHS3 compliance
- Moisture Sensitivity Level 1
- REACH unaffected status
All identified substitute parts meet these core requirements. Additional features such as automotive AEC-Q200 certification or high voltage capability represent enhancements beyond the base specification and do not prevent substitution.
Parameter Comparison
| Manufacturer Part Number | Manufacturer | Resistance | Tolerance | Power (W) | Temp Coeff (ppm/°C) | Operating Temp (°C) | Package | Size L x W (mm) | Height Max (mm) | RoHS | MSL | Product Status |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| RCS3216F125CS | Samsung Electro-Mechanics | 1.2 MOhms | ±1% | 0.25 | ±100 | -55 to 155 | 1206 | 3.20 x 1.60 | 0.66 | ROHS3 | 1 | Active |
| AC1206FR-071M2L | YAGEO | 1.2 MOhms | ±1% | 0.25 | ±100 | -55 to 155 | 1206 | 3.10 x 1.60 | 0.65 | ROHS3 | 1 | Active |
| CRCW12061M20FKEA | Vishay Dale | 1.2 MOhms | ±1% | 0.25 | ±100 | -55 to 155 | 1206 | 3.20 x 1.60 | 0.60 | ROHS3 | 1 | Active |
| ERJ-8ENF1204V | Panasonic Electronic Components | 1.2 MOhms | ±1% | 0.25 | ±100 | -55 to 155 | 1206 | 3.20 x 1.60 | 0.70 | ROHS3 | 1 | Not For New Designs |
| KTR18EZPF1204 | Rohm Semiconductor | 1.2 MOhms | ±1% | 0.25 | ±100 | -55 to 155 | 1206 | 3.20 x 1.60 | 0.65 | ROHS3 | 1 | Active |
| RC1206FR-071M2L | YAGEO | 1.2 MOhms | ±1% | 0.25 | ±100 | -55 to 155 | 1206 | 3.10 x 1.60 | 0.65 | ROHS3 | 1 | Active |
Engineering Selection Recommendations
Primary Substitutes (Active Status):
AC1206FR-071M2L (YAGEO) and RC1206FR-071M2L (YAGEO) are functionally equivalent with active product status. AC1206FR-071M2L includes automotive AEC-Q200 certification. Both parts are available in high inventory quantities (9705 and 18530 units respectively).
CRCW12061M20FKEA (Vishay Dale) is an active substitute with automotive AEC-Q200 certification and the highest inventory availability (11989 units). Physical dimensions match the main part exactly (3.20 x 1.60 mm).
KTR18EZPF1204 (Rohm Semiconductor) is an active substitute with automotive AEC-Q200 certification and high voltage capability. Inventory availability is 14293 units.
Secondary Substitute (Legacy Status):
ERJ-8ENF1204V (Panasonic Electronic Components) meets all electrical and mechanical specifications with automotive AEC-Q200 certification. However, this part carries "Not For New Designs" status. Use only for replacement or maintenance of existing assemblies. Inventory availability is 177291 units.
Selection Basis:
All substitutes maintain identical electrical performance (1.2 MOhms ±1%, 0.25W, ±100ppm/°C, -55°C to 155°C). Selection should prioritize active product status and compliance certifications required by the application. Automotive applications benefit from AEC-Q200 qualified alternatives. Physical height variations (0.60 to 0.70 mm) are within standard PCB assembly tolerances for 1206 packages.
Frequently Asked Questions (FAQ)
Q: Can AC1206FR-071M2L replace RCS3216F125CS directly?
A: Yes. AC1206FR-071M2L is electrically and mechanically equivalent with identical resistance (1.2 MOhms ±1%), power rating (0.25W), temperature coefficient (±100ppm/°C), and operating range (-55°C to 155°C). Both use 1206 package with 2 terminations. Physical dimensions are within standard tolerance for 1206 footprints (3.10 x 1.60 mm vs. 3.20 x 1.60 mm). AC1206FR-071M2L adds automotive AEC-Q200 certification.
Q: What is the difference between CRCW12061M20FKEA and CRCW12061M20FKTA?
A: Both are Vishay Dale CRCW series 1.2 MOhms ±1% 0.25W 1206 resistors. The primary difference is packaging: FKEA uses Cut Tape (CT) & Digi-Reel®, while FKTA uses Tape & Reel (TR). Electrical and mechanical specifications are identical. Selection depends on assembly process requirements.
Q: Why is ERJ-8ENF1204V marked "Not For New Designs"?
A: This Panasonic part is functionally equivalent but carries legacy status. Manufacturers designate "Not For New Designs" when transitioning product lines or discontinuing support. Use ERJ-8ENF1204V only for replacement in existing assemblies. For new designs, select from active alternatives: AC1206FR-071M2L, CRCW12061M20FKEA, KTR18EZPF1204, or RC1206FR-071M2L.
Q: Are all substitutes RoHS3 compliant?
A: Yes. All listed substitutes and the main part RCS3216F125CS are ROHS3 compliant with Moisture Sensitivity Level 1 (unlimited shelf life). All are REACH unaffected.
Q: Does physical size variation affect PCB layout?
A: Minimal impact. Substitute parts range from 3.10 x 1.60 mm to 3.20 x 1.60 mm length, with height variation from 0.60 to 0.70 mm. These variations are within standard 1206 package tolerances and do not require PCB footprint redesign. Verify clearance for components in high-density layouts.
Q: Which substitute offers the best inventory availability?
A: ERJ-8ENF1204V has the highest inventory (177291 units), but carries legacy status. Among active parts, CRCW12061M20FKEA offers the highest availability (11989 units) with active product status and automotive certification.
Q: Can I use KTR18EZPF1204 in high-voltage applications?
A: KTR18EZPF1204 includes high voltage capability as an additional feature. However, the base electrical specification (1.2 MOhms ±1%, 0.25W) remains identical to other substitutes. Verify specific voltage requirements against component datasheets for your application.
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