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PM528S-8R2-RC Equivalent & Substitute Parts
Part Overview
The PM528S-8R2-RC is an 8.2 µH shielded drum core wirewound inductor manufactured by Bourns Inc., rated for 2.1 A continuous current with a maximum DC resistance of 55 mOhm. This surface mount component is designed for applications requiring controlled inductance with minimal DC losses and electromagnetic shielding. The part is currently in active production status with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1).
Substitute parts are identified when equivalent electrical and mechanical parameters are maintained across the same product category, ensuring functional interchangeability in circuit designs without performance degradation.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Inductance | 8.2 µH |
| Inductance Tolerance | ±30% |
| Current Rating | 2.1 A |
| Saturation Current (Isat) | 1.6 A |
| DC Resistance (DCR) | 55 mOhm Max |
| Core Material | Ferrite |
| Shielding | Shielded |
| Q Factor @ 7.96 MHz | 7 |
| Self Resonant Frequency | 34 MHz |
| Operating Temperature Range | -40°C to 125°C |
| Mounting Type | Surface Mount |
| Package Dimensions | 5.80 mm × 5.80 mm × 3.00 mm (Max Height) |
| RoHS Status | ROHS3 Compliant |
| MSL Rating | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution eligibility for the PM528S-8R2-RC is determined by strict equivalence across the following critical parameters:
- Inductance value: 8.2 µH with ±30% tolerance
- Current rating: 2.1 A minimum
- Saturation current: 1.6 A minimum
- DC resistance: 55 mOhm maximum
- Core type: Ferrite with shielding
- Operating temperature range: -40°C to 125°C minimum
- Package dimensions: 5.80 mm × 5.80 mm footprint with 3.00 mm maximum height
- Surface mount configuration
The SRR5028-8R2Y meets all specified parameters and qualifies as a direct substitute within the same electrical and mechanical classification.
Parameter Comparison
| Parameter | PM528S-8R2-RC | SRR5028-8R2Y | Match Status |
|---|---|---|---|
| Manufacturer | Bourns Inc. | Bourns Inc. | Identical |
| Inductance | 8.2 µH | 8.2 µH | Identical |
| Inductance Tolerance | ±30% | ±30% | Identical |
| Current Rating | 2.1 A | 2.1 A | Identical |
| Saturation Current | 1.6 A | 1.6 A | Identical |
| DC Resistance | 55 mOhm Max | 55 mOhm Max | Identical |
| Core Material | Ferrite | Ferrite | Identical |
| Shielding | Shielded | Shielded | Identical |
| Q Factor @ 7.96 MHz | 7 | 7 | Identical |
| Self Resonant Frequency | 34 MHz | 34 MHz | Identical |
| Operating Temperature | -40°C to 125°C | -40°C to 125°C | Identical |
| Mounting Type | Surface Mount | Surface Mount | Identical |
| Package Dimensions | 5.80 mm × 5.80 mm × 3.00 mm | 5.80 mm × 5.80 mm × 3.00 mm | Identical |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | Identical |
| MSL Rating | 1 (Unlimited) | 1 (Unlimited) | Identical |
Engineering Selection Recommendations
Both PM528S-8R2-RC and SRR5028-8R2Y are active production components from Bourns Inc. with identical electrical specifications and mechanical compatibility. Selection between these parts may be based on:
- Inventory availability: PM528S-8R2-RC (867 pcs) vs. SRR5028-8R2Y (2536 pcs)
- Supply chain lead times and procurement channels
- Design documentation and historical usage patterns
Both parts maintain full ROHS3 compliance and carry identical environmental certifications (REACH Unaffected, EAR99 classification). The MSL 1 rating indicates unlimited shelf life under standard storage conditions for both variants.
Frequently Asked Questions (FAQ)
Q: Are PM528S-8R2-RC and SRR5028-8R2Y electrically interchangeable?
A: Yes. Both inductors provide identical inductance (8.2 µH ±30%), current rating (2.1 A), saturation current (1.6 A), and DC resistance (55 mOhm max). Electrical performance in circuit operation is equivalent.
Q: Do these parts have the same physical footprint?
A: Yes. Both components share identical surface mount dimensions of 5.80 mm × 5.80 mm with a maximum seated height of 3.00 mm, ensuring direct PCB layout compatibility without redesign.
Q: What is the difference between PM528S and SRR5028 series designations?
A: The series designation reflects different product lines within Bourns Inc.'s inductor portfolio. Despite different series names, these specific part numbers maintain complete parameter equivalence for substitution purposes.
Q: Are there any compliance or certification differences?
A: No. Both parts carry identical RoHS3 compliance, REACH Unaffected status, and MSL 1 moisture sensitivity ratings. Environmental and regulatory certifications are equivalent.
Q: Can I substitute these parts mid-production?
A: Substitution is electrically and mechanically valid based on provided specifications. Production change procedures should follow your organization's engineering change control processes.
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