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ERJ-S14F8451U Equivalent & Substitute Parts
Part Overview
The ERJ-S14F8451U is an 8.45 kOhms ±1% thick film chip resistor rated at 0.5W (1/2W) in a 1210 (3225 Metric) package. This component is manufactured by Panasonic Electronic Components and features anti-sulfur coating with automotive AEC-Q200 qualification. The part is currently in active production status with 751 units in stock.
Substitute parts are necessary when the primary part becomes unavailable, when design requirements shift to legacy component compatibility, or when supply chain optimization requires sourcing from alternative product lines within the same manufacturer's portfolio.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Resistance | 8.45 kOhms |
| Tolerance | ±1% |
| Power Rating | 0.5W (1/2W) |
| Package / Case | 1210 (3225 Metric) |
| Composition | Thick Film |
| Temperature Coefficient | ±100ppm/°C |
| Operating Temperature Range | -55°C ~ 155°C |
| Automotive Rating | AEC-Q200 |
| Dimensions | 3.20mm L x 2.50mm W x 0.70mm H (Max) |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level | MSL 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution eligibility for the ERJ-S14F8451U is determined by strict equivalence across the following parameters:
- Resistance value: 8.45 kOhms
- Tolerance: ±1%
- Power rating: 0.5W (1/2W)
- Package: 1210 (3225 Metric)
- Composition: Thick Film
- Temperature coefficient: ±100ppm/°C
- Operating temperature range: -55°C ~ 155°C
- Automotive qualification: AEC-Q200
- RoHS compliance: ROHS3
- Moisture sensitivity: MSL 1
The ERJ-14NF8451U meets all electrical and mechanical parameters required for direct substitution. The primary distinction is product status and series designation within the Panasonic portfolio.
Parameter Comparison
| Parameter | ERJ-S14F8451U (Main Part) | ERJ-14NF8451U (Substitute) |
|---|---|---|
| Manufacturer | Panasonic Electronic Components | Panasonic Electronic Components |
| Resistance | 8.45 kOhms | 8.45 kOhms |
| Tolerance | ±1% | ±1% |
| Power Rating | 0.5W (1/2W) | 0.5W (1/2W) |
| Package / Case | 1210 (3225 Metric) | 1210 (3225 Metric) |
| Composition | Thick Film | Thick Film |
| Temperature Coefficient | ±100ppm/°C | ±100ppm/°C |
| Operating Temperature | -55°C ~ 155°C | -55°C ~ 155°C |
| AEC-Q200 Rating | Yes | Yes |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant |
| MSL Rating | MSL 1 (Unlimited) | MSL 1 (Unlimited) |
| Dimensions | 3.20mm L x 2.50mm W x 0.70mm H (Max) | 3.20mm L x 2.50mm W x 0.70mm H (Max) |
| Product Status | Active | Not For New Designs |
| Series | ERJ-S14 | ERJ-14N |
| Current Inventory | 751 Pcs | 9750 Pcs |
Engineering Selection Recommendations
The ERJ-S14F8451U is the preferred selection for new designs due to its active product status. This part carries full manufacturer support and is optimized for current manufacturing processes.
The ERJ-14NF8451U is electrically and mechanically equivalent and maintains full AEC-Q200 automotive qualification and ROHS3 compliance. However, this part is designated "Not For New Designs" by the manufacturer. Selection of this substitute should be limited to legacy system maintenance, field replacements, or situations where design freeze requirements mandate use of existing qualified component lists.
Both parts are suitable for automotive applications requiring AEC-Q200 qualification and operate across the full industrial temperature range of -55°C to 155°C.
Frequently Asked Questions (FAQ)
Q: Can ERJ-14NF8451U be used as a direct replacement for ERJ-S14F8451U in new designs?
A: Electrically and mechanically, yes. However, the ERJ-14NF8451U carries a "Not For New Designs" status. New designs should specify the ERJ-S14F8451U to ensure long-term availability and manufacturer support.
Q: What is the difference between the ERJ-S14 and ERJ-14N series?
A: Both series are Panasonic thick film chip resistors with identical electrical specifications for this resistance value. The ERJ-S14 series represents the current product line, while ERJ-14N is a legacy series maintained for existing applications.
Q: Are both parts suitable for automotive applications?
A: Yes. Both the ERJ-S14F8451U and ERJ-14NF8451U carry AEC-Q200 automotive qualification and are suitable for automotive-grade applications across the -55°C to 155°C operating temperature range.
Q: What does "Not For New Designs" mean for the ERJ-14NF8451U?
A: This designation indicates the manufacturer is not actively promoting this part for new product development. Existing inventory may be available, but the manufacturer prioritizes the ERJ-S14 series for new applications. Use of "Not For New Designs" parts should be justified by specific legacy or maintenance requirements.
Q: Are the physical dimensions identical between these parts?
A: Yes. Both parts use the 1210 (3225 Metric) package with identical dimensions: 3.20mm length, 2.50mm width, and 0.70mm maximum seated height. They are footprint-compatible.
Q: Do both parts meet RoHS and REACH compliance?
A: Yes. Both the ERJ-S14F8451U and ERJ-14NF8451U are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.
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