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L0806B4R7JSWST Equivalent & Substitute Parts
Part Overview
The L0806B4R7JSWST is a 4.7 µH unshielded drum core wirewound inductor manufactured by KEMET, designed for surface mount applications in the 0806 (2016 Metric) package. This component operates at 270 mA current rating with 780mOhm DC resistance and supports operating temperatures from -40°C to 105°C.
The L0806B4R7JSWST carries an Obsolete product status. Identifying equivalent substitute parts is necessary to maintain design continuity and ensure component availability for production and maintenance applications.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Inductance | 4.7 µH |
| Tolerance | ±5% |
| Current Rating | 270 mA |
| DC Resistance (DCR) | 780mOhm |
| Package / Case | 0806 (2016 Metric) |
| Mounting Type | Surface Mount |
| Operating Temperature Range | -40°C ~ 105°C |
| Core Material | Ferrite |
| Shielding | Unshielded |
| Self Resonant Frequency | 40MHz |
Substitute Part Grouping Explanation
Substitute parts for the L0806B4R7JSWST are identified based on strict electrical and mechanical parameter matching. The following criteria determine substitution eligibility:
Primary Matching Criteria:
- Inductance value: 4.7 µH
- Inductance tolerance: ±5%
- Current rating: 270 mA minimum
- Package / Case: 0806 (2016 Metric)
- Mounting type: Surface Mount
- Core material: Ferrite
- Shielding configuration: Unshielded
- Operating temperature range: -40°C ~ 105°C minimum
Secondary Compatibility Factors:
- DC resistance within acceptable circuit design parameters
- Self resonant frequency: 40MHz
- RoHS3 compliance
- Moisture sensitivity level: 1 (Unlimited)
The substitute part LBM2016T4R7J meets all primary matching criteria and maintains compatibility with the original design specifications.
Parameter Comparison
| Parameter | L0806B4R7JSWST (KEMET) | LBM2016T4R7J (Taiyo Yuden) |
|---|---|---|
| Inductance | 4.7 µH | 4.7 µH |
| Tolerance | ±5% | ±5% |
| Current Rating (Amps) | 270 mA | 270 mA |
| DC Resistance (DCR) | 780mOhm | 1.014Ohm Max |
| Package / Case | 0806 (2016 Metric) | 0806 (2016 Metric) |
| Size / Dimension | 0.079" L x 0.063" W (2.00mm x 1.60mm) | 0.079" L x 0.063" W (2.00mm x 1.60mm) |
| Height - Seated (Max) | 0.071" (1.80mm) | 0.071" (1.80mm) |
| Mounting Type | Surface Mount | Surface Mount |
| Operating Temperature | -40°C ~ 105°C | -40°C ~ 105°C |
| Self Resonant Frequency | 40MHz | 40MHz |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) | 1 (Unlimited) |
| REACH Status | REACH Unaffected | REACH Unaffected |
Engineering Selection Recommendations
The LBM2016T4R7J from Taiyo Yuden is a direct substitute for the obsolete L0806B4R7JSWST. Both components share identical inductance values, current ratings, package dimensions, and operating temperature specifications.
The primary difference between these parts is DC resistance: the L0806B4R7JSWST specifies 780mOhm, while the LBM2016T4R7J specifies 1.014Ohm maximum. This difference must be evaluated within the context of the specific circuit application to determine if the higher DCR of the substitute part remains within acceptable design tolerances.
Both parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory compatibility. The LBM2016T4R7J carries a "Not For New Designs" product status, indicating it remains available for existing production and maintenance applications despite the original part's obsolescence.
Frequently Asked Questions (FAQ)
Q: Can the LBM2016T4R7J directly replace the L0806B4R7JSWST in existing designs?
A: The LBM2016T4R7J matches all critical electrical and mechanical parameters including inductance, current rating, package size, and operating temperature range. The higher DC resistance (1.014Ohm vs 780mOhm) must be evaluated against circuit requirements. If the circuit design accommodates this DCR specification, direct substitution is possible.
Q: Are there packaging differences between these parts?
A: Both parts use identical 0806 (2016 Metric) surface mount packages with matching physical dimensions (0.079" L x 0.063" W, 2.00mm x 1.60mm) and maximum seated height (0.071" / 1.80mm). No PCB layout modifications are required.
Q: What is the significance of the "Not For New Designs" status on the substitute part?
A: This designation indicates the LBM2016T4R7J remains available for production and maintenance of existing applications but is not recommended for new product development. For obsolete component replacement in established designs, this part remains suitable.
Q: Do both parts meet the same compliance standards?
A: Yes. Both the L0806B4R7JSWST and LBM2016T4R7J are ROHS3 compliant, REACH unaffected, and carry MSL 1 (Unlimited) moisture sensitivity ratings, ensuring equivalent regulatory and environmental compliance.
Q: What is the primary technical consideration when substituting these parts?
A: The DC resistance difference (780mOhm vs 1.014Ohm) is the primary technical parameter requiring circuit-level evaluation. Applications sensitive to inductor losses or thermal dissipation must confirm the higher DCR remains within acceptable operating parameters.
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