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ERJ-S1TF61R9U Equivalent & Substitute Parts
Part Overview
The ERJ-S1TF61R9U is a 61.9 Ohm ±1% 1W thick film chip resistor in 2512 (6432 Metric) package manufactured by Panasonic Electronic Components. This part features anti-sulfur coating and automotive AEC-Q200 qualification, designed for high-reliability applications in automotive and industrial environments. The part is currently in active production status with 1044 units in stock.
Substitute parts become necessary when the primary part reaches end-of-life status, inventory constraints occur, or design requirements mandate alternative qualified sources for supply chain resilience and cost optimization.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Resistance | 61.9 Ohms |
| Tolerance | ±1% |
| Power Rating | 1W |
| Package / Case | 2512 (6432 Metric) |
| Composition | Thick Film |
| Temperature Coefficient | ±100ppm/°C |
| Operating Temperature Range | -55°C ~ 155°C |
| Automotive Rating | AEC-Q200 |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution eligibility for the ERJ-S1TF61R9U is determined by strict equivalence across the following critical parameters:
- Resistance value: 61.9 Ohms
- Tolerance: ±1%
- Power rating: 1W
- Package: 2512 (6432 Metric)
- Composition: Thick Film
- Temperature coefficient: ±100ppm/°C
- Operating temperature range: -55°C ~ 155°C
- Automotive qualification: AEC-Q200
- RoHS compliance: ROHS3 Compliant
- Moisture sensitivity: MSL 1
All identified substitute parts meet these electrical and mechanical specifications. Dimensional variations within supplier tolerances (length 0.248" to 0.252", width 0.124" to 0.126") remain within acceptable PCB footprint compatibility for the 2512 package standard.
Parameter Comparison
| Parameter | ERJ-S1TF61R9U (Panasonic) | ERJ-1TNF61R9U (Panasonic) | CRCW251261R9FKEG (Vishay Dale) |
|---|---|---|---|
| Resistance | 61.9 Ohms | 61.9 Ohms | 61.9 Ohms |
| Tolerance | ±1% | ±1% | ±1% |
| Power Rating | 1W | 1W | 1W |
| Package | 2512 (6432 Metric) | 2512 (6432 Metric) | 2512 (6432 Metric) |
| Composition | Thick Film | Thick Film | Thick Film |
| Temperature Coefficient | ±100ppm/°C | ±100ppm/°C | ±100ppm/°C |
| Operating Temperature | -55°C ~ 155°C | -55°C ~ 155°C | -55°C ~ 155°C |
| AEC-Q200 Rating | Yes | Yes | Yes |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| MSL Rating | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) |
| Product Status | Active | Not For New Designs | Active |
| Current Inventory | 1044 Pcs | 4196 Pcs | 8503 Pcs |
Engineering Selection Recommendations
Primary Selection: ERJ-S1TF61R9U (Panasonic)
This part maintains active production status and includes anti-sulfur coating, providing enhanced reliability in corrosive environments. Recommended for new designs and applications requiring the latest manufacturing process.
Secondary Selection: CRCW251261R9FKEG (Vishay Dale)
This part is in active production status with the highest current inventory availability (8503 units). Suitable for applications where multi-source qualification is required or when Panasonic supply becomes constrained. Electrical and mechanical specifications are fully equivalent.
Tertiary Selection: ERJ-1TNF61R9U (Panasonic)
This part carries "Not For New Designs" status, indicating end-of-life trajectory. Use only for legacy system maintenance, repair, or when existing design qualifications explicitly reference this part number. Higher inventory (4196 units) may provide short-term availability advantage.
Frequently Asked Questions (FAQ)
Q: Can ERJ-1TNF61R9U be used in new designs?
A: No. This part is designated "Not For New Designs" and represents an obsolete series. New designs must use ERJ-S1TF61R9U or CRCW251261R9FKEG.
Q: Are dimensional differences between ERJ-S1TF61R9U and CRCW251261R9FKEG significant?
A: No. The length difference (0.252" vs 0.248") and width difference (0.126" vs 0.124") fall within standard 2512 package tolerances and do not affect PCB footprint compatibility.
Q: What is the significance of anti-sulfur coating on ERJ-S1TF61R9U?
A: Anti-sulfur coating provides enhanced protection against sulfur-containing atmospheric contaminants and corrosive environments. This feature is present on ERJ-S1TF61R9U but not explicitly listed for the other substitutes.
Q: Are all three parts AEC-Q200 qualified?
A: Yes. All three parts meet AEC-Q200 automotive qualification standards and are suitable for automotive applications.
Q: Can these parts be used interchangeably on existing PCBs?
A: Yes. All three parts share identical electrical specifications, temperature coefficients, operating ranges, and 2512 package footprints, enabling direct substitution on existing designs.
Q: What is the difference in moisture sensitivity between these parts?
A: All three parts have MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions during storage or handling.
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