Request Quote
(Ships tomorrow)
RC2012J123CS Equivalent & Substitute Parts Reference
Part Overview
The RC2012J123CS is a 12 kOhms ±5% thick film chip resistor manufactured by Samsung Electro-Mechanics, rated at 0.125W (1/8W) in 0805 (2012 Metric) package format. This component is classified as Active product status with RoHS3 compliance and unlimited moisture sensitivity level (MSL 1). The part is designed for general-purpose applications requiring moisture-resistant thick film construction across industrial temperature ranges from -55°C to 155°C.
Equivalent and substitute parts are necessary when the original manufacturer part becomes unavailable, when design requirements demand improved tolerance specifications, or when application-specific certifications such as automotive AEC-Q200 qualification are required for end-use compliance.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Resistance | 12 kOhms |
| Tolerance | ±5% |
| Power Rating | 0.125W (1/8W) |
| Package / Case | 0805 (2012 Metric) |
| Composition | Thick Film |
| Temperature Coefficient | ±100ppm/°C |
| Operating Temperature Range | -55°C to 155°C |
| Moisture Sensitivity Level | 1 (Unlimited) |
| RoHS Status | RoHS3 Compliant |
| Number of Terminations | 2 |
Substitute Part Grouping Explanation
Substitution of the RC2012J123CS is determined by strict equivalence across the following critical parameters:
Mandatory Equivalence Parameters:
- Resistance value: 12 kOhms (exact match required)
- Package / Case: 0805 (2012 Metric) (physical and electrical compatibility)
- Power rating: 0.125W (1/8W) (thermal handling capacity)
- Temperature coefficient: ±100ppm/°C (frequency stability characteristics)
- Operating temperature range: -55°C to 155°C (environmental suitability)
- Composition: Thick Film (material consistency)
- Number of terminations: 2 (circuit interface compatibility)
Allowable Variation Parameters:
- Tolerance: ±5% (main part) to ±1% (substitute upgrade) — tighter tolerance represents functional upgrade
- Manufacturer: Different manufacturers permitted when all mandatory parameters match
- Packaging format: Tape & Reel (TR) or Cut Tape (CT) & Digi-Reel® — logistics variation only
- Features: Additional certifications (Automotive AEC-Q200, High Voltage) permitted as upgrades
- Moisture resistance: Enhanced moisture resistance permitted as upgrade
Substitution Categories:
Direct Substitutes (±5% Tolerance): Parts maintaining identical tolerance specification as RC2012J123CS.
Upgrade Substitutes (±1% Tolerance): Parts with improved tolerance specification, suitable for applications requiring higher precision while maintaining all other electrical and mechanical parameters.
Similar Parts (±5% Tolerance with Enhanced Features): Parts matching tolerance and core specifications but including additional certifications such as AEC-Q200 automotive qualification.
Parameter Comparison
| Manufacturer Part Number | Manufacturer | Resistance | Tolerance | Power (W) | Package | Temp Coeff (ppm/°C) | Op Temp Range (°C) | Features | RoHS Status | MSL |
|---|---|---|---|---|---|---|---|---|---|---|
| RC2012J123CS | Samsung Electro-Mechanics | 12 kOhms | ±5% | 0.125 | 0805 | ±100 | -55 to 155 | Moisture Resistant | RoHS3 | 1 |
| RC2012F123CS | Samsung Electro-Mechanics | 12 kOhms | ±1% | 0.125 | 0805 | ±100 | -55 to 155 | Moisture Resistant | RoHS3 | 1 |
| RC0805JR-0712KL | YAGEO | 12 kOhms | ±5% | 0.125 | 0805 | ±100 | -55 to 155 | Moisture Resistant | RoHS3 | 1 |
| AC0805FR-0712KL | YAGEO | 12 kOhms | ±1% | 0.125 | 0805 | ±100 | -55 to 155 | Automotive AEC-Q200, Moisture Resistant | RoHS3 | 1 |
| CR0805-FX-1202ELF | Bourns Inc. | 12 kOhms | ±1% | 0.125 | 0805 | ±100 | -55 to 155 | Moisture Resistant | RoHS3 | 1 |
| CRG0805F12K | TE Connectivity Passive Product | 12 kOhms | ±1% | 0.125 | 0805 | ±100 | -55 to 155 | None specified | RoHS3 | 1 |
| ERJ-6ENF1202V | Panasonic Electronic Components | 12 kOhms | ±1% | 0.125 | 0805 | ±100 | -55 to 155 | Automotive AEC-Q200 | RoHS3 | 1 |
| KTR10EZPF1202 | Rohm Semiconductor | 12 kOhms | ±1% | 0.125 | 0805 | ±100 | -55 to 155 | Automotive AEC-Q200, High Voltage | RoHS3 | 1 |
| RC0805FR-0712KL | YAGEO | 12 kOhms | ±1% | 0.125 | 0805 | ±100 | -55 to 155 | Moisture Resistant | RoHS3 | 1 |
| RMCF0805FT12K0 | Stackpole Electronics Inc | 12 kOhms | ±1% | 0.125 | 0805 | ±100 | -55 to 155 | Automotive AEC-Q200 | RoHS3 | 1 |
| AC0805JR-0712KL | YAGEO | 12 kOhms | ±5% | 0.125 | 0805 | ±100 | -55 to 155 | Automotive AEC-Q200, Moisture Resistant | RoHS3 | 1 |
Engineering Selection Recommendations
Direct Substitution (Same Tolerance ±5%):
RC0805JR-0712KL (YAGEO) and AC0805JR-0712KL (YAGEO) are direct substitutes maintaining ±5% tolerance specification. Both parts are Active product status with RoHS3 compliance and MSL 1 rating. AC0805JR-0712KL includes Automotive AEC-Q200 certification, suitable for applications requiring automotive-grade component qualification. Selection between these options depends on whether automotive certification is required for the end application.
Upgrade Substitution (Improved Tolerance ±1%):
RC2012F123CS (Samsung Electro-Mechanics), RC0805FR-0712KL (YAGEO), CR0805-FX-1202ELF (Bourns Inc.), CRG0805F12K (TE Connectivity), ERJ-6ENF1202V (Panasonic), KTR10EZPF1202 (Rohm Semiconductor), and RMCF0805FT12K0 (Stackpole Electronics) all provide ±1% tolerance upgrade while maintaining all other electrical and mechanical parameters. These parts are suitable for applications where improved tolerance specification enhances circuit performance or meets tighter design margins.
Automotive Applications:
AC0805FR-0712KL, ERJ-6ENF1202V, KTR10EZPF1202, and RMCF0805FT12K0 include Automotive AEC-Q200 certification. These parts are required for automotive end-use applications subject to AEC-Q200 qualification standards.
High Voltage Applications:
KTR10EZPF1202 (Rohm Semiconductor) includes High Voltage feature specification in addition to Automotive AEC-Q200 certification, suitable for applications requiring enhanced voltage handling characteristics.
Inventory Availability:
RC0805FR-0712KL (YAGEO) maintains highest inventory availability at 159,839 pieces, followed by RMCF0805FT12K0 (Stackpole) at 165,303 pieces. RC0805JR-0712KL (YAGEO) provides 120,192 pieces in stock. These options support high-volume production requirements.
Frequently Asked Questions (FAQ)
Q: Can RC2012J123CS be replaced with a ±1% tolerance part?
A: Yes. Parts with ±1% tolerance such as RC2012F123CS, RC0805FR-0712KL, CR0805-FX-1202ELF, CRG0805F12K, ERJ-6ENF1202V, KTR10EZPF1202, and RMCF0805FT12K0 are functional upgrades. All mandatory electrical and mechanical parameters remain identical. Tighter tolerance improves circuit precision without affecting physical compatibility or thermal performance.
Q: What is the difference between Tape & Reel (TR) and Cut Tape (CT) & Digi-Reel® packaging?
A: Packaging format affects logistics and handling only. Tape & Reel (TR) provides continuous reel format for automated assembly equipment. Cut Tape (CT) & Digi-Reel® provides individual tape segments. Electrical and mechanical specifications remain identical. Selection depends on assembly equipment compatibility and procurement requirements.
Q: Are automotive-qualified parts (AEC-Q200) compatible with non-automotive applications?
A: Yes. Automotive AEC-Q200 qualified parts such as AC0805FR-0712KL, ERJ-6ENF1202V, KTR10EZPF1202, and RMCF0805FT12K0 meet or exceed general industrial specifications. These parts are suitable for any application accepting the base electrical and mechanical specifications. AEC-Q200 certification represents additional qualification, not a limitation.
Q: Can different manufacturers' parts be mixed in the same circuit board assembly?
A: Yes. All substitute parts listed maintain identical resistance value (12 kOhms), tolerance (±5% or ±1%), power rating (0.125W), package (0805), temperature coefficient (±100ppm/°C), and operating temperature range (-55°C to 155°C). Different manufacturers' parts are electrically and mechanically interchangeable when these parameters match.
Q: What does MSL 1 (Unlimited) mean for moisture sensitivity?
A: MSL 1 indicates unlimited shelf life without moisture bake-out requirements. The component can be stored at room temperature and humidity without degradation. No special moisture control procedures are required during storage, handling, or assembly preparation.
Q: Is RoHS3 compliance required for all substitute parts?
A: All substitute parts listed are RoHS3 compliant. RoHS3 compliance is a regulatory requirement for electronic components in most markets. All parts in this reference maintain this compliance status.
Q: What is the significance of Temperature Coefficient ±100ppm/°C?
A: Temperature coefficient specifies resistance value change per degree Celsius across the operating temperature range. ±100ppm/°C indicates the resistance value will vary by approximately 0.01% per degree Celsius. This parameter is identical across all substitute parts, ensuring consistent frequency stability and temperature-dependent circuit behavior.
Q: Can RC2012J123CS be used in high-voltage applications?
A: RC2012J123CS is rated for 0.125W (1/8W) power dissipation at standard voltage levels. For high-voltage applications, KTR10EZPF1202 (Rohm Semiconductor) includes explicit High Voltage feature specification and is the appropriate selection.
Alternative Parts
SJ6012L2TP
Littelfuse Inc.
6 Alternative Parts
JMK107BBJ476MA-RE
Taiyo Yuden
10 Alternative Parts
GMK107BBJ475MA-T
Taiyo Yuden
5 Alternative Parts
SJ6020N2ARP
Littelfuse Inc.
3 Alternative Parts
SJ6025R2ATP
Littelfuse Inc.
4 Alternative Parts
2474-05L
API Delevan Inc.
1 Alternative Parts
4590R-684K
API Delevan Inc.
1 Alternative Parts
CM6560R-334
API Delevan Inc.
1 Alternative Parts
CM6460-104
API Delevan Inc.
1 Alternative Parts
5526-12
API Delevan Inc.
1 Alternative Parts