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MLF2012DR27MT Equivalent & Substitute Parts
Part Overview
The MLF2012DR27MT is a 270 nH shielded multilayer inductor manufactured by TDK Corporation, designed for surface mount applications in the 0805 (2012 Metric) package. This component is rated for 250 mA maximum current with a DC resistance of 350 mOhm maximum and operates across the temperature range of -55°C to 125°C. The part is currently classified as "Not For New Designs," making identification of suitable alternatives essential for ongoing production and maintenance applications.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Inductance | 270 nH |
| Inductance Tolerance | ±20% |
| Current Rating | 250 mA |
| DC Resistance (DCR) | 350 mOhm Max |
| Shielding | Shielded |
| Core Material | Ferrite |
| Package / Case | 0805 (2012 Metric) |
| Operating Temperature | -55°C to 125°C |
| Q @ Frequency | 20 @ 25 MHz |
| Self Resonant Frequency | 220 MHz |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution of the MLF2012DR27MT is determined by strict equivalence across the following critical parameters:
- Inductance value: 270 nH (exact match required)
- Package / Case: 0805 (2012 Metric) (physical and electrical compatibility)
- Current Rating: 250 mA minimum (functional requirement)
- DC Resistance: 350 mOhm maximum (performance specification)
- Shielding: Shielded (electromagnetic containment requirement)
- Core Material: Ferrite (electrical characteristic)
- Operating Temperature Range: -55°C to 125°C minimum (environmental specification)
The MLF2012DR27KT000 meets all substitution criteria as a direct equivalent from the same manufacturer series (MLF), with identical electrical performance specifications and package configuration.
Parameter Comparison
| Parameter | MLF2012DR27MT | MLF2012DR27KT000 | Compatibility |
|---|---|---|---|
| Manufacturer | TDK Corporation | TDK Corporation | Match |
| Inductance | 270 nH | 270 nH | Match |
| Inductance Tolerance | ±20% | ±10% | Substitute tighter |
| Current Rating (Amps) | 250 mA | 250 mA | Match |
| DC Resistance (DCR) | 350 mOhm Max | 350 mOhm Max | Match |
| Shielding | Shielded | Shielded | Match |
| Core Material | Ferrite | Ferrite | Match |
| Q @ Frequency | 20 @ 25 MHz | 20 @ 25 MHz | Match |
| Self Resonant Frequency | 220 MHz | 220 MHz | Match |
| Package / Case | 0805 (2012 Metric) | 0805 (2012 Metric) | Match |
| Operating Temperature | -55°C to 125°C | -55°C to 125°C | Match |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | Match |
| Moisture Sensitivity Level | 1 (Unlimited) | 1 (Unlimited) | Match |
| Product Status | Not For New Designs | Active | Substitute active |
Engineering Selection Recommendations
The MLF2012DR27KT000 is the direct equivalent substitute for the MLF2012DR27MT. Both components are manufactured by TDK Corporation within the MLF series and maintain identical electrical specifications, package configuration, and environmental ratings. The primary distinction is product status: the MLF2012DR27MT is designated "Not For New Designs," while the MLF2012DR27KT000 carries "Active" status, indicating ongoing manufacturer support and availability.
The MLF2012DR27KT000 additionally provides a tighter inductance tolerance of ±10% compared to the ±20% tolerance of the original part, representing an improvement in precision without compromising any functional requirement. Both components maintain ROHS3 compliance and identical moisture sensitivity classification (MSL 1).
For applications requiring the 270 nH inductance value in the 0805 package with 250 mA current rating and shielded ferrite core construction, the MLF2012DR27KT000 is the appropriate active production alternative.
Frequently Asked Questions (FAQ)
Q: Can MLF2012DR27KT000 be used as a direct replacement for MLF2012DR27MT in existing designs?
A: Yes. Both components share identical inductance (270 nH), current rating (250 mA), DC resistance (350 mOhm maximum), package configuration (0805 / 2012 Metric), operating temperature range (-55°C to 125°C), and shielding characteristics. The MLF2012DR27KT000 is electrically and mechanically compatible for direct substitution.
Q: What is the difference in inductance tolerance between these parts?
A: The MLF2012DR27MT specifies ±20% tolerance, while the MLF2012DR27KT000 specifies ±10% tolerance. The tighter tolerance of the substitute part does not create incompatibility; it represents improved precision within the same nominal 270 nH value.
Q: Are both parts RoHS compliant?
A: Yes. Both MLF2012DR27MT and MLF2012DR27KT000 are ROHS3 compliant and carry identical moisture sensitivity level (MSL 1 - Unlimited).
Q: Why is the MLF2012DR27MT marked "Not For New Designs"?
A: This designation indicates the part has reached end-of-life status in the manufacturer's product portfolio. The MLF2012DR27KT000, marked as "Active," represents the current production equivalent and is recommended for new applications.
Q: Are there any package or footprint differences between these inductors?
A: No. Both components use the 0805 (2012 Metric) package with identical dimensions: 0.079" L × 0.049" W (2.00 mm × 1.25 mm) and maximum seated height of 0.041" (1.05 mm). PCB footprints are identical.
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