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PD104R-184K Equivalent & Substitute Parts
Part Overview
The PD104R-184K is a 180 µH unshielded drum core wirewound inductor manufactured by API Delevan Inc., designed for surface mount applications. This component operates across a temperature range of -55°C to 125°C and is rated for 570 mA continuous current with a maximum DC resistance of 630 mOhm. The part is currently active in production and ROHS3 compliant, making it suitable for modern electronic assemblies requiring fixed inductance in compact form factors.
Equivalent and substitute parts are identified when alternative components maintain the same or compatible electrical and mechanical specifications, allowing for design flexibility, supply chain optimization, or inventory management.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Inductance | 180 µH |
| Inductance Tolerance | ±10% |
| Current Rating | 570 mA |
| DC Resistance (Max) | 630 mOhm |
| Core Type | Ferrite Drum Core, Unshielded |
| Mounting Type | Surface Mount |
| Operating Temperature Range | -55°C to 125°C |
| Package Type | Nonstandard |
| RoHS Status | ROHS3 Compliant |
Substitute Part Grouping Explanation
The SDR1006-181KL from Bourns Inc. qualifies as a substitute for the PD104R-184K based on the following alignment of critical electrical and mechanical parameters:
Matching Parameters:
- Inductance: 180 µH (identical)
- Inductance Tolerance: ±10% (identical)
- DC Resistance: 630 mOhm Max (identical)
- Core Type: Ferrite Drum Core, Unshielded (identical)
- Mounting Type: Surface Mount (identical)
- Operating Temperature Range: -40°C to 125°C (overlapping upper range)
- RoHS Status: ROHS3 Compliant (identical)
- Moisture Sensitivity Level: 1 (Unlimited) (identical)
Differing Parameters:
- Current Rating: SDR1006-181KL rated at 720 mA versus 570 mA for PD104R-184K (higher rating provides design margin)
- Physical Dimensions: SDR1006-181KL measures 9.80mm × 9.80mm × 5.80mm versus 9.80mm × 8.79mm × 4.00mm for PD104R-184K (larger footprint)
- Operating Temperature Minimum: SDR1006-181KL operates to -40°C versus -55°C for PD104R-184K (narrower low-temperature range)
Parameter Comparison
| Parameter | PD104R-184K (API Delevan) | SDR1006-181KL (Bourns) |
|---|---|---|
| Inductance | 180 µH | 180 µH |
| Inductance Tolerance | ±10% | ±10% |
| Current Rating (Amps) | 570 mA | 720 mA |
| DC Resistance (Max) | 630 mOhm | 630 mOhm |
| Core Material | Ferrite | Ferrite |
| Shielding | Unshielded | Unshielded |
| Mounting Type | Surface Mount | Surface Mount |
| Operating Temperature Range | -55°C to 125°C | -40°C to 125°C |
| Package Type | Nonstandard | Nonstandard |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant |
| MSL Rating | 1 (Unlimited) | 1 (Unlimited) |
Engineering Selection Recommendations
Both the PD104R-184K and SDR1006-181KL are active production components with ROHS3 compliance and identical moisture sensitivity ratings, qualifying them for equivalent use in applications where the specified electrical parameters are met.
The SDR1006-181KL provides a higher current rating of 720 mA compared to the 570 mA rating of the PD104R-184K, offering additional design margin in current-limited applications. However, the SDR1006-181KL has a larger physical footprint (9.80mm × 9.80mm × 5.80mm versus 9.80mm × 8.79mm × 4.00mm) and a narrower low-temperature operating range (-40°C minimum versus -55°C minimum).
Selection between these parts depends on application-specific constraints: space-constrained designs or applications requiring operation below -40°C favor the PD104R-184K, while designs benefiting from higher current capacity and available inventory favor the SDR1006-181KL.
Frequently Asked Questions (FAQ)
Q: Can the SDR1006-181KL directly replace the PD104R-184K in existing designs?
A: Direct replacement is possible when the application does not require operation below -40°C and the larger physical dimensions (9.80mm × 9.80mm × 5.80mm) fit within the available PCB space. The identical inductance, tolerance, and DC resistance ensure electrical compatibility.
Q: What is the significance of the higher current rating on the SDR1006-181KL?
A: The SDR1006-181KL is rated for 720 mA continuous current versus 570 mA for the PD104R-184K. This higher rating indicates greater thermal margin and saturation headroom, beneficial in applications approaching the original part's current limits.
Q: Are there physical footprint considerations when substituting these parts?
A: Yes. The SDR1006-181KL measures 9.80mm × 9.80mm with a seated height of 5.80mm, compared to the PD104R-184K at 9.80mm × 8.79mm with a seated height of 4.00mm. PCB layout and component clearance must accommodate the larger dimensions.
Q: Do both parts meet the same compliance standards?
A: Both parts are ROHS3 compliant, REACH unaffected, and carry MSL rating 1 (Unlimited). Both are classified under ECCN EAR99 and HTSUS 8504.50.4000.
Q: What is the inductance test frequency for these components?
A: Both parts are tested at 1 kHz for inductance measurement, ensuring consistent specification reference across the product line.
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