B82451L1004E402 EPCOS Inductor (Other) In Stock
EPCOS B82451L1004E402 is a 1000 µH ferrite RF inductor with 3% tolerance and 9 Ω DC resistance, designed for transponder Z-coil applications. It meets AEC-Q200 automotive reliability standards and is optimized for RFID, access control, and near-field communication circuits.
- Manufacturer
- EPCOS
- Package
- Other
- Pin Count
- 2
- Lifecycle
- ACTIVE
- Datasheet
- B82451L1004E402 Datasheet PDF
- Category
- Inductor
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 1000 µH inductance with tight 3% tolerance for precise RF tuning
- 9 Ω DC resistance in a rectangular 3029 case for compact PCB integration
- AEC-Q200 compliant ferrite core construction for automotive-grade reliability
- Optimized for transponder Z-coil and near-field RF inductor applications
Applications
The EPCOS B82451L1004E402 is primarily used in RFID transponder systems, automotive keyless entry modules, and near-field communication (NFC) reader circuits where a stable 1000 µH inductance is critical for antenna tuning. Its AEC-Q200 rating makes it suitable for automotive access control systems and industrial identification equipment operating across a wide temperature range.
Specifications
| Factory Lead Time | 14Weeks |
| YTEOL | 6 |
| Case/Size Code | 3029 |
| Construction | Rectangular |
| Core Material | FERRITE |
| DC Resistance | 9Ω |
| Inductance-Nom (L) | 1000 µH |
| Inductor Application | RF INDUCTOR |
| Inductor Type | GENERAL PURPOSE INDUCTOR |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Package Height | 2.65mm |
| Package Length | 7.7mm |
| Package Style | SMT |
| Package Width | 7.4mm |
| Packing Method | TR, Blister, 13 Inch |
| Reference Standard | AEC-Q200 |
| Self Resonance Frequency | 3MHz |
| Shape/Size Description | RECTANGULAR PACKAGE |
| Shielded | NO |
| Special Feature | DCR MEASURED AT 20% TOLERANCE |
| Surface Mount | YES |
| Terminal Finish | TIN |
| Terminal Placement | DUAL ENDED |
| Terminal Shape | WRAPAROUND |
| Test Frequency | 0.125MHz |
| Tolerance | 3% |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8504.50.80.00 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What inductance value and tolerance does the B82451L1004E402 provide for RF transponder designs?
The B82451L1004E402 provides a nominal inductance of 1000 µH with a tight 3% tolerance. This precision is critical for RFID antenna tuning circuits where small deviations in inductance shift the resonant frequency significantly, causing reduced read range or communication failures in transponder systems.
How does the B82451L1004E402 qualify for automotive designs, and what reliability standard does it meet?
The B82451L1004E402 meets AEC-Q200 qualification, the standard for passive components in automotive applications. This means it has been tested for thermal shock, humidity, vibration, and long-term stability, making it suitable for keyless entry systems, immobilizers, and other automotive RF modules operating from -40°C to +125°C.
What DC resistance does the B82451L1004E402 exhibit, and how does this affect power dissipation in circuit designs?
The B82451L1004E402 has a DC resistance of 9 Ω, which determines resistive power loss in the coil. At low currents typical for RFID transponder circuits, this results in minimal I²R heating, but designers should account for the 9 Ω series resistance when calculating Q-factor and bandwidth for antenna resonance circuits.
For which RFID and access control system frequencies is the B82451L1004E402 best suited?
The B82451L1004E402 is optimized for low-frequency RFID systems operating at 125 kHz and 134.2 kHz, commonly used in automotive transponders, animal tagging, and industrial access control. The 1000 µH inductance combined with an external capacitor tunes the antenna coil to these frequencies for maximum signal coupling efficiency.
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