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PM428S-150-RC Equivalent & Substitute Parts
Part Overview
The PM428S-150-RC is a 15 µH shielded drum core wirewound inductor manufactured by Bourns Inc., designed for surface mount applications. This component delivers 1.03 A current rating with 150mOhm maximum DC resistance and operates across the temperature range of -40°C to 125°C. The part maintains active product status and is ROHS3 compliant, making it suitable for modern electronic assemblies. Substitute parts may be required due to inventory constraints, supply chain considerations, or design flexibility within equivalent electrical and mechanical specifications.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Inductance | 15 µH |
| Inductance Tolerance | ±30% |
| Current Rating | 1.03 A |
| Current - Saturation (Isat) | 780mA |
| DC Resistance (DCR) | 150mOhm Max |
| Core Material | Ferrite |
| Shielding | Shielded |
| Q @ Frequency | 9.66 @ 2.52MHz |
| Self Resonant Frequency | 27MHz |
| Operating Temperature Range | -40°C ~ 125°C |
| Mounting Type | Surface Mount |
| Physical Dimensions | 0.189" L x 0.189" W (4.80mm x 4.80mm) |
| Height - Seated (Max) | 0.118" (3.00mm) |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
The SRR4028-150Y qualifies as an equivalent substitute for the PM428S-150-RC based on the following critical parameters:
- Inductance Value: Both parts specify 15 µH with ±30% tolerance
- Current Rating: Both rated at 1.03 A maximum
- Saturation Current: Both specify 780mA Isat
- DC Resistance: Both specify 150mOhm maximum
- Core Type: Both utilize ferrite drum core construction with shielding
- Frequency Characteristics: Both exhibit Q of 9.66 @ 2.52MHz and 27MHz self-resonant frequency
- Operating Temperature: Both operate across -40°C to 125°C
- Mounting: Both are surface mount components
- Physical Footprint: Both measure 0.189" L x 0.189" W (4.80mm x 4.80mm) with 0.118" (3.00mm) maximum seated height
- Compliance: Both are ROHS3 compliant with MSL 1 rating
The substitution is valid across all electrical and mechanical parameters specified for this product category.
Parameter Comparison
| Parameter | PM428S-150-RC | SRR4028-150Y |
|---|---|---|
| Manufacturer | Bourns Inc. | Bourns Inc. |
| Inductance | 15 µH | 15 µH |
| Inductance Tolerance | ±30% | ±30% |
| Current Rating (Amps) | 1.03 A | 1.03 A |
| Current - Saturation (Isat) | 780mA | 780mA |
| DC Resistance (DCR) | 150mOhm Max | 150mOhm Max |
| Core Material | Ferrite | Ferrite |
| Shielding | Shielded | Shielded |
| Q @ Frequency | 9.66 @ 2.52MHz | 9.66 @ 2.52MHz |
| Frequency - Self Resonant | 27MHz | 27MHz |
| Operating Temperature | -40°C ~ 125°C | -40°C ~ 125°C |
| Mounting Type | Surface Mount | Surface Mount |
| Size / Dimension | 0.189" L x 0.189" W (4.80mm x 4.80mm) | 0.189" L x 0.189" W (4.80mm x 4.80mm) |
| Height - Seated (Max) | 0.118" (3.00mm) | 0.118" (3.00mm) |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 1 (Unlimited) |
| Product Status | Active | Active |
Engineering Selection Recommendations
Both the PM428S-150-RC and SRR4028-150Y maintain active product status from Bourns Inc. and carry identical ROHS3 compliance and REACH unaffected certifications. Selection between these parts should be based on availability, packaging requirements, and supply chain logistics. Both components satisfy the electrical and mechanical requirements for 15 µH shielded drum core wirewound inductor applications with 1.03 A current handling capability. The parts are electrically and mechanically interchangeable within the specified parameters.
Frequently Asked Questions (FAQ)
Q: Can SRR4028-150Y replace PM428S-150-RC in existing designs?
A: Yes. Both parts share identical electrical specifications (15 µH inductance, 1.03 A current rating, 150mOhm DCR), core material (ferrite), shielding, frequency characteristics, and physical dimensions (0.189" x 0.189" x 0.118" max height). Both are surface mount components with matching thermal and compliance ratings.
Q: Are there package differences between these parts?
A: Both parts are supplied in Tape & Reel (TR) packaging. The PM428S-150-RC uses a nonstandard package designation, while the SRR4028-150Y specifies 1919 (4848 Metric) package classification. Physical footprint and mounting characteristics remain identical.
Q: Do these parts have the same thermal performance?
A: Yes. Both components operate across -40°C to 125°C and share identical Q factor (9.66 @ 2.52MHz) and self-resonant frequency (27MHz) specifications.
Q: What compliance certifications apply to both parts?
A: Both PM428S-150-RC and SRR4028-150Y are ROHS3 compliant, REACH unaffected, classified as EAR99, and carry MSL 1 (Unlimited) moisture sensitivity ratings.
Q: Are there any electrical parameter differences?
A: No. Inductance value, tolerance, current rating, saturation current, DC resistance, and frequency characteristics are identical across both parts.
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