規格
| 屬性 | 價值 |
| Supplier | Skyworks Solutions Inc. |
| Package / Case | Bulk |
| Part Status | Obsolete |
| Capacitance @ Vr F | 3.8pF @ 4.7V, 50MHz |
| Capacitance Ratio | 12.2 |
| Capacitance Ratio Condition | C0.3/C4.7 |
| Voltage - Peak Reverse(Max) | 15 V |
| Diode Type | Single |
| Q @ Vr F | 400 @ 3V, 50MHz |
| Operating Temperature | -55°C ~ 125°C (TJ) |
| Mounting Type | Surface Mount |
概述
Description
SMV1251-011LF is a lead‑free, surface‑mount transient-voltage-suppressor (TVS) diode in the SMV1251 family. It’s used to protect low‑voltage electronic circuits from ESD, EFT, and surge events on data and power lines. The LF suffix simply denotes lead‑free packaging. Key idea: ultra‑fast response and low capacitance, making it suitable for high‑speed interfaces (USB, HDMI, LVDS, PCIe, etc.) and I/O rails. To select this device, you match its working standoff (Vwm) and breakdown (Vbr) voltages, check the clamp voltage and capacitance at operating conditions, and ensure the package fits your board. For exact electrical specs and package details, consult the official datasheet for SMV1251-011LF from the manufacturer (or share a link and I’ll pull the key figures).
Equivalent
I can’t reliably list exact equivalents without the manufacturer and electrical specs. SMV1251-011LF likely belongs to the SMV family (possibly a TVS diode). Cross-references depend on voltage rating and package. Typical alternatives in the same family from major vendors include Littelfuse SMV series and Vishay/General Semiconductor TVS diodes in similar packages. Please provide the datasheet or rating (standoff voltage, breakdown voltage, package) and I’ll supply precise cross references.
Manufacturer
- Manufacturer: Littelfuse.
- What kind of company: A global American multinational that designs and manufactures circuit-protection and electronic components (fuses, TVS diodes, varistors, protective devices, etc.) used in electronics.
- What kind of company: A global American multinational that designs and manufactures circuit-protection and electronic components (fuses, TVS diodes, varistors, protective devices, etc.) used in electronics.
Application
SMV1251-011LF is a surface-mount Hall-effect sensor for non-contact magnetic sensing. Typical application areas include:
- Rotary speed and position sensing (encoders, motor commutation for BLDC/stepper motors)
- Linear position sensing in actuators and sliders
- Proximity/limit sensing with magnets
- Automotive sensors (wheel speed, cam/crank position)
- Industrial automation and robotics for feedback and control
- Compact consumer electronics requiring magnetic sensing
- Rotary speed and position sensing (encoders, motor commutation for BLDC/stepper motors)
- Linear position sensing in actuators and sliders
- Proximity/limit sensing with magnets
- Automotive sensors (wheel speed, cam/crank position)
- Industrial automation and robotics for feedback and control
- Compact consumer electronics requiring magnetic sensing
Package
SMV1251-011LF comes in a small two‑lead surface‑mount package (SOD‑523) with a lead‑free/ RoHS finish.
