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MMZ2012D301BT000 Equivalent & Substitute Parts
Part Overview
The MMZ2012D301BT000 is a 300 Ohm ferrite bead signal line filter in 0805 (2012 Metric) surface mount package manufactured by TDK Corporation. This component operates at 100 MHz impedance with 400mA current rating and 500mOhm maximum DC resistance. The part is classified as Last Time Buy, indicating production discontinuation. Equivalent and substitute parts are necessary to ensure design continuity and maintain supply chain flexibility for applications requiring 300 Ohm ferrite bead filtering at 0805 package size.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Impedance @ Frequency | 300 Ohms @ 100 MHz |
| Package / Case | 0805 (2012 Metric) |
| Current Rating (Max) | 400mA |
| DC Resistance (DCR) (Max) | 500mOhm |
| Filter Type | Signal Line |
| Number of Lines | 1 |
| Operating Temperature | -55°C ~ 125°C |
| Mounting Type | Surface Mount |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution eligibility for MMZ2012D301BT000 is determined by the following critical parameters:
Primary Substitution Criteria:
- Impedance @ 100 MHz: 300 Ohms (exact match required)
- Package / Case: 0805 (2012 Metric) (exact match required)
- Number of Lines: 1 (exact match required)
- Operating Temperature Range: -55°C ~ 125°C (exact match required)
- Mounting Type: Surface Mount (exact match required)
Secondary Compatibility Parameters:
- Current Rating (Max): 400mA minimum required
- DC Resistance (DCR) (Max): 500mOhm maximum allowed
- Filter Type: Signal Line preferred
- RoHS Status: ROHS3 Compliant required
- Moisture Sensitivity Level: 1 (Unlimited) required
Substitute parts are grouped into two categories: MFR Recommended (direct replacement with same package) and Parametric Equivalents (same electrical performance, same package, with variations in current rating and DCR within acceptable ranges).
Parameter Comparison
| Manufacturer Part Number | Manufacturer | Impedance @ 100 MHz | Package | Current Rating (Max) | DCR (Max) | Product Status | Packaging Type |
|---|---|---|---|---|---|---|---|
| MMZ2012D301BT000 | TDK Corporation | 300 Ohms | 0805 (2012 Metric) | 400mA | 500mOhm | Last Time Buy | Cut Tape (CT) |
| MMZ1608D301BTA00 | TDK Corporation | 300 Ohms | 0603 (1608 Metric) | 300mA | 700mOhm | Active | Tape & Reel (TR) |
| MMZ2012S301AT000 | TDK Corporation | 300 Ohms | 0805 (2012 Metric) | 600mA | 200mOhm | Last Time Buy | Tape & Reel (TR) |
| ACML-0805-301-T | Abracon LLC | 300 Ohms | 0805 (2012 Metric) | 500mA | 250mOhm | Active | Tape & Reel (TR) |
| BBGK00201209301Y00 | Pulse Electronics | 300 Ohms | 0805 (2012 Metric) | 700mA | 180mOhm | Active | Tape & Reel (TR) |
| BBNQ00201209301Y00 | Pulse Electronics | 300 Ohms | 0805 (2012 Metric) | 500mA | 300mOhm | Active | Tape & Reel (TR) |
| BLM21AG331SN1D | Murata Electronics | 330 Ohms | 0805 (2012 Metric) | 700mA | 160mOhm | Active | Cut Tape (CT) & Digi-Reel® |
| BLM21BB331SN1D | Murata Electronics | 330 Ohms | 0805 (2012 Metric) | 400mA | 330mOhm | Active | Tape & Reel (TR) |
| EMI0805R-300 | Delevan | 300 Ohms | 0805 (2012 Metric) | 500mA | 200mOhm | Active | Tape & Reel (TR) |
| FB201209T-301Y-S-1 | Cal-Chip Electronics, Inc. | 300 Ohms | 0805 (2012 Metric) | 500mA | 200mOhm | Active | Tape & Reel (TR) |
| FCM 2012KF-301T07 | TAI-TECH Advanced Electronics Co., Ltd. | 300 Ohms | 0805 (2012 Metric) | 700mA | 300mOhm | Active | Tape & Reel (TR) |
Engineering Selection Recommendations
Direct Substitutes (0805 Package, 300 Ohm Impedance):
Parts meeting all primary substitution criteria with Active product status are preferred for new designs: ACML-0805-301-T (Abracon LLC), BBGK00201209301Y00 (Pulse Electronics), BBNQ00201209301Y00 (Pulse Electronics), EMI0805R-300 (Delevan), and FB201209T-301Y-S-1 (Cal-Chip Electronics, Inc.). These parts maintain 0805 package compatibility and 300 Ohm impedance specification while offering improved current ratings and reduced DC resistance compared to the original part.
MMZ2012S301AT000 (TDK Corporation) provides parametric equivalence with superior current rating (600mA) and lower DC resistance (200mOhm) in the same 0805 package, though classified as Last Time Buy.
Alternative with Package Downsizing:
MMZ1608D301BTA00 (TDK Corporation) offers Active product status and TDK manufacturer continuity but requires PCB layout modification due to 0603 (1608 Metric) package size reduction. Current rating is reduced to 300mA and DC resistance increases to 700mOhm.
Impedance Variants (330 Ohm):
BLM21AG331SN1D and BLM21BB331SN1D (Murata Electronics EMIFIL® series) operate at 330 Ohms @ 100 MHz instead of 300 Ohms. These parts are suitable only for applications where 330 Ohm impedance is acceptable within circuit design tolerances.
All recommended substitutes maintain ROHS3 compliance, MSL 1 (Unlimited) rating, and -55°C ~ 125°C operating temperature range.
Frequently Asked Questions (FAQ)
Q: Can MMZ1608D301BTA00 replace MMZ2012D301BT000 directly?
A: MMZ1608D301BTA00 is electrically equivalent at 300 Ohms @ 100 MHz but uses 0603 (1608 Metric) package instead of 0805 (2012 Metric). PCB footprint modification is required. Current rating is reduced to 300mA and DC resistance increases to 700mOhm. Substitution is valid only if circuit design accommodates these parameter changes and physical space constraints allow package downsizing.
Q: Are 330 Ohm ferrite beads (BLM21AG331SN1D, BLM21BB331SN1D) compatible?
A: These parts operate at 330 Ohms @ 100 MHz, not 300 Ohms. Substitution is valid only if circuit design specifications permit 10% impedance variation. Verify filter performance requirements before selection.
Q: What is the difference between Cut Tape (CT) and Tape & Reel (TR) packaging?
A: Cut Tape packaging is supplied in individual strips suitable for manual assembly or small-volume production. Tape & Reel packaging is supplied on continuous reels for automated pick-and-place assembly. Both formats contain identical components; packaging selection depends on assembly process requirements.
Q: Which substitute offers the best current rating performance?
A: BBGK00201209301Y00 and FCM 2012KF-301T07 both provide 700mA maximum current rating, exceeding the original 400mA specification. ACML-0805-301-T, BBNQ00201209301Y00, EMI0805R-300, and FB201209T-301Y-S-1 provide 500mA current rating.
Q: Are all substitutes RoHS3 compliant?
A: All listed substitutes maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, matching the original part specifications.
Q: What is the significance of Last Time Buy status?
A: Last Time Buy indicates the manufacturer will discontinue production. MMZ2012D301BT000 and MMZ2012S301AT000 are subject to discontinuation. Active status parts (ACML-0805-301-T, BBGK00201209301Y00, BBNQ00201209301Y00, EMI0805R-300, FB201209T-301Y-S-1, FCM 2012KF-301T07) are recommended for long-term supply chain stability.
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