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L0806B3R9JSWST Equivalent & Substitute Parts
Part Overview
The L0806B3R9JSWST is a 3.9 µH unshielded drum core wirewound inductor manufactured by KEMET, designed for surface mount applications in the 0806 (2016 Metric) package. This component operates at 275 mA current rating with 740 mOhm DC resistance and supports operating temperatures from -40°C to 105°C.
The L0806B3R9JSWST has reached obsolete product status. Identifying equivalent substitute parts ensures design continuity and supply chain reliability for applications requiring this specific inductance value and electrical performance.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Inductance | 3.9 µH |
| Tolerance | ±5% |
| Current Rating | 275 mA |
| DC Resistance (DCR) | 740 mOhm |
| Core Type | Ferrite, Unshielded Drum Core |
| Package / Case | 0806 (2016 Metric) |
| Mounting Type | Surface Mount |
| Operating Temperature Range | -40°C to 105°C |
| Self Resonant Frequency | 43 MHz |
| Inductance Test Frequency | 7.96 MHz |
Substitute Part Grouping Explanation
Substitute parts for the L0806B3R9JSWST are identified based on strict electrical and mechanical parameter matching:
Critical Matching Parameters:
- Inductance value: 3.9 µH
- Tolerance: ±5%
- Current rating: 275 mA
- DC resistance: 740 mOhm
- Package: 0806 (2016 Metric)
- Core material: Ferrite, unshielded drum core
- Operating temperature range: -40°C to 105°C
- Self resonant frequency: 43 MHz
Only components meeting all these specifications are classified as direct substitutes. Variations in any parameter disqualify a part from this equivalency group.
Parameter Comparison
| Parameter | L0806B3R9JSWST (KEMET) | LBM2016T3R9J (Taiyo Yuden) |
|---|---|---|
| Inductance | 3.9 µH | 3.9 µH |
| Tolerance | ±5% | ±5% |
| Current Rating (Amps) | 275 mA | 275 mA |
| DC Resistance (DCR) | 740 mOhm | 740 mOhm |
| Core Type | Ferrite, Unshielded Drum Core | Ferrite, Unshielded Drum Core |
| Package / Case | 0806 (2016 Metric) | 0806 (2016 Metric) |
| Mounting Type | Surface Mount | Surface Mount |
| Operating Temperature Range | -40°C to 105°C | -40°C to 105°C |
| Self Resonant Frequency | 43 MHz | 43 MHz |
| Inductance Test Frequency | 7.96 MHz | 7.96 MHz |
| Q @ Frequency | Not specified | 30 @ 7.96 MHz |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 1 (Unlimited) |
| REACH Status | REACH Unaffected | REACH Unaffected |
Engineering Selection Recommendations
L0806B3R9JSWST (KEMET): This part is classified as obsolete. While 1086 pieces remain in current inventory, this product is no longer in active production. Selection of this part should be limited to applications requiring existing stock or legacy system maintenance.
LBM2016T3R9J (Taiyo Yuden): This substitute part is classified as "Not For New Designs" but maintains full electrical and mechanical equivalency to the L0806B3R9JSWST. With 32300 pieces in inventory, this part provides superior supply availability. Both components are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements.
For new design implementations, neither part is recommended due to their respective product status classifications. However, for applications requiring this specific inductance and current rating in the 0806 package, the LBM2016T3R9J offers greater supply security and inventory depth.
Frequently Asked Questions (FAQ)
Q: Can the LBM2016T3R9J directly replace the L0806B3R9JSWST in existing designs?
A: Yes. Both components share identical electrical specifications (3.9 µH inductance, 275 mA current rating, 740 mOhm DCR) and mechanical packaging (0806/2016 Metric surface mount). The LBM2016T3R9J is a direct functional equivalent.
Q: What is the significance of the "Not For New Designs" status on the LBM2016T3R9J?
A: This designation indicates the manufacturer is not actively promoting this part for new product development. However, it remains available for purchase and maintains full compliance with RoHS3 and REACH regulations. The part is suitable for replacement and legacy applications.
Q: Are there differences in Q factor between these two inductors?
A: The LBM2016T3R9J specifies Q = 30 @ 7.96 MHz. The L0806B3R9JSWST does not provide a Q specification in the available data. Both components share identical self-resonant frequency (43 MHz) and test frequency (7.96 MHz), indicating comparable high-frequency performance characteristics.
Q: Do both parts require the same PCB footprint?
A: Yes. Both the L0806B3R9JSWST and LBM2016T3R9J use the 0806 (2016 Metric) package with identical dimensions: 0.079" L x 0.063" W (2.00mm x 1.60mm) and maximum seated height of 0.071" (1.80mm). PCB layout modifications are not required for substitution.
Q: What is the moisture sensitivity level for these components?
A: Both parts are rated MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. Standard handling and storage procedures apply without special desiccant or humidity control requirements.
Q: Are there packaging format differences between these parts?
A: The L0806B3R9JSWST packaging format is not specified in available data. The LBM2016T3R9J is supplied in Tape & Reel (TR) format. Verify packaging requirements for your procurement and assembly processes.
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