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PM7032S-331M-RC Equivalent & Substitute Parts
Part Overview
The PM7032S-331M-RC is a 330 µH shielded drum core wirewound inductor manufactured by Bourns Inc., rated for 220 mA continuous current with a maximum DC resistance of 1.9Ohm. This surface mount component operates across the temperature range of -40°C to 125°C and is ROHS3 compliant. The part is currently in active production status with 806 units available in stock. Substitute parts are identified when equivalent electrical and mechanical specifications are required for design flexibility, inventory management, or supply chain continuity.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Inductance | 330 µH |
| Tolerance | ±20% |
| Current Rating | 220 mA |
| Current - Saturation (Isat) | 240 mA |
| DC Resistance (DCR) | 1.9Ohm Max |
| Core Material | Ferrite |
| Shielding | Shielded |
| Operating Temperature Range | -40°C ~ 125°C |
| Mounting Type | Surface Mount |
| Package Size | 7.00mm x 7.00mm x 3.40mm (Max Height) |
| RoHS Status | ROHS3 Compliant |
| MSL Rating | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution eligibility for the PM7032S-331M-RC is determined by strict equivalence across the following critical parameters:
- Inductance value: 330 µH with ±20% tolerance
- Current rating: 220 mA minimum continuous current capability
- Saturation current: 240 mA minimum
- DC resistance: 1.9Ohm maximum
- Core type: Ferrite shielded drum core
- Mounting: Surface mount configuration
- Package dimensions: 7.00mm x 7.00mm footprint with 3.40mm maximum height
- Operating temperature: -40°C to 125°C range
- Compliance: ROHS3 and REACH requirements
The SRR7032-331M meets all specified electrical and mechanical parameters and qualifies as a direct substitute.
Parameter Comparison
| Parameter | PM7032S-331M-RC | SRR7032-331M | Match Status |
|---|---|---|---|
| Manufacturer | Bourns Inc. | Bourns Inc. | Identical |
| Inductance | 330 µH | 330 µH | Identical |
| Tolerance | ±20% | ±20% | Identical |
| Current Rating (Amps) | 220 mA | 220 mA | Identical |
| Current - Saturation (Isat) | 240 mA | 240 mA | Identical |
| DC Resistance (DCR) | 1.9Ohm Max | 1.9Ohm Max | Identical |
| Core Material | Ferrite | Ferrite | Identical |
| Shielding | Shielded | Shielded | Identical |
| Type | Drum Core, Wirewound | Drum Core, Wirewound | Identical |
| Operating Temperature | -40°C ~ 125°C | -40°C ~ 125°C | Identical |
| Q @ Freq | 46 @ 796kHz | 46 @ 796kHz | Identical |
| Frequency - Self Resonant | 6.1MHz | 6.1MHz | Identical |
| Inductance Frequency - Test | 100 kHz | 100 kHz | Identical |
| Mounting Type | Surface Mount | Surface Mount | Identical |
| Size / Dimension | 7.00mm x 7.00mm | 7.00mm x 7.00mm | Identical |
| Height - Seated (Max) | 3.40mm | 3.40mm | Identical |
| Packaging | Tape & Reel (TR) | Tape & Reel (TR) | Identical |
| Product Status | Active | Active | Identical |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | Identical |
| MSL Rating | 1 (Unlimited) | 1 (Unlimited) | Identical |
| REACH Status | REACH Unaffected | REACH Unaffected | Identical |
Engineering Selection Recommendations
Both PM7032S-331M-RC and SRR7032-331M are active production components from Bourns Inc. with identical electrical specifications, mechanical dimensions, and compliance certifications. Selection between these parts may be based on inventory availability: PM7032S-331M-RC has 806 units in stock, while SRR7032-331M has 1871 units available. Both parts meet ROHS3 and REACH requirements and are suitable for applications requiring 330 µH inductance at 220 mA continuous current in surface mount configurations. The interchangeability is complete across all specified parameters.
Frequently Asked Questions (FAQ)
Q: Can SRR7032-331M be used as a direct replacement for PM7032S-331M-RC?
A: Yes. Both parts are manufactured by Bourns Inc. and share identical electrical specifications (330 µH inductance, 220 mA current rating, 1.9Ohm DCR), mechanical dimensions (7.00mm x 7.00mm footprint), operating temperature range (-40°C to 125°C), and compliance certifications (ROHS3, REACH). No circuit modifications are required.
Q: Are there any differences in the package or mounting between these parts?
A: No. Both parts use identical surface mount packaging in Tape & Reel format with the same footprint dimensions and maximum seated height of 3.40mm.
Q: What is the difference between the PM7032S and SRR7032 series designations?
A: The series designation reflects the internal product line classification within Bourns Inc. The electrical and mechanical specifications are equivalent for these specific part numbers.
Q: Are both parts suitable for high-temperature applications?
A: Yes. Both parts operate across the temperature range of -40°C to 125°C and maintain their specified electrical characteristics within this range.
Q: What is the moisture sensitivity level for these inductors?
A: Both parts have an MSL rating of 1 (Unlimited), indicating no moisture sensitivity restrictions for storage or handling.
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