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BAT54S-QR

Name: BAT54S-QR
Rating: 4.8 (15 reviews)

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TRANS PREBIAS NPN/PNP

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데이터시트 BAT54S-QR DataSheet
패키지 TO-236-3
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사양

속성	가치
Supplier	Nexperia USA Inc.
Package / Case	Bulk
Series	Automotive, AEC-Q101
Part Status	Active
Diode Configuration	1 Pair Series Connection
Diode Type	Schottky
Voltage - DC Reverse (Vr) (Max)	30 V
Current - Average Rectified(Io)(per Diode)	200mA (DC)
Voltage - Forward (Vf) (Max) @ If	800 mV @ 100 mA
Speed	Small Signal =< 200mA (Io), Any Speed
Reverse Recovery Time (trr)	5 ns
Current - Reverse Leakage @ Vr	2 µA @ 25 V
Operating Temperature - Junction	150°C
Mounting Type	Surface Mount

개요

Description

BAT54S-QR is a dual Schottky barrier diode in a SOT-23 package with a common-cathode configuration (two anodes, one shared cathode). It combines fast switching with a very low forward-voltage drop, making it ideal for high-speed, low-loss switching and protection circuits.
Key specs (typical):
- Reverse voltage (VR): 30 V
- Average forward current (IF(AV)): ~0.2 A (200 mA)
- Forward voltage (VF): ≈0.25–0.4 V at moderate current; rises with current
- Low leakage and no substantial reverse-recovery charge (Schottky behavior)
-QR suffix: indicates tape-and-reel packaging for automated assembly and RoHS-compliant lead-free construction.
Common uses:
- Diode-ORing and rail switching
- Input protection and clamping
- Small-signal/high-speed switching in compact electronics
Note: check the specific manufacturer’s datasheet for exact parameters, as values may vary slightly by vendor.

Equivalent

BAT54S-QR is a dual Schottky diode (common cathode) in SOT-23. Equivalents are other dual-Schottky diodes with the same package and similar ratings (around 30 V, 0.2–0.5 A). Representative cross-refs include Vishay’s BAT54S and other vendors’ identical dual-Schottky parts in SOT-23. For exact cross-references and packaging options (QR, TR, etc.), check distributor databases (Digi-Key, Mouser) with BAT54S-QR.

Features

Here are the features of BAT54S-QR:
- Dual Schottky barrier diodes in a single SOT-23 package
- Common cathode configuration (two anodes, one shared cathode)
- Reverse voltage VRRM: typically 30 V
- Forward current: IF(AV) ≈ 200 mA per diode
- Very low forward voltage drop (VF ~0.2–0.3 V at modest current)
- Fast switching with no minority-carrier tail
- Low reverse leakage
- Operating temp range typically −55 °C to 125 °C
- Packaging: -QR indicates Tape & Reel (for automated assembly); RoHS-compliant
Typical uses: diode-ORing, level shifting, clamping, and other high-speed, low-current switching tasks.

Pinout

- Pin count: 3 pins (SOT-23 package).
- Function: Dual Schottky diode pair with a common anode. Pin 3 is the common anode; Pin 1 is the cathode of D1; Pin 2 is the cathode of D2. Used for OR-ing, clamping, and low-drop rectification.

Manufacturer

Manufacturer: Nexperia.
What kind of company: Nexperia is a global semiconductor company that designs and manufactures discrete components (such as diodes, transistors, and ESD protection), as well as related signal-conditioning devices. It is headquartered in the Netherlands and operates worldwide.

Application

BAT54S-QR is a dual Schottky diode (common cathode) in SOT-23 with low forward voltage and fast switching. Typical application areas:
- Diode-ORing of two sources to a common rail (power or signal lines)
- Reverse-polarity and input protection in low-voltage/battery circuits
- Freewheeling/clamping diodes in DC-DC converters and low-power supplies
- Fast rectification for compact adapters, USB, telecom interfaces
- Demodulation, envelope detection, and simple level-shifting in RF/logic circuits
- MCU/IC input protection from voltage spikes
QR signifies reel packaging for automated assembly.