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BAS521Q-13

Name: BAS521Q-13
Rating: 4.7 (12 reviews)

DIODE GEN PURP 300V 250MA SOD523

製造商
製造商。部分 #BAS521Q-13
包 SC-79, SOD-523
資料表 BAS521Q-13 DataSheet
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規格

Supplier	Diodes Incorporated
Package	Tape & Reel (TR),Cut Tape (CT)
Series	Automotive, AEC-Q101
ProductStatus	Active
DiodeType	Standard
Voltage-DCReverse(Vr)(Max)	300 V
Current-AverageRectified(Io)	250mA (DC)
Voltage-Forward(Vf)(Max)@If	1.1 V @ 100 mA
Speed	Fast Recovery =< 500ns, > 200mA (Io)
ReverseRecoveryTime(trr)	50 ns
Current-ReverseLeakage@Vr	150 nA @ 250 V
Capacitance@VrF	5pF @ 0V, 1MHz
MountingType	Surface Mount
Package/Case	SC-79, SOD-523
SupplierDevicePackage	SOD-523

概述

Description

BAS521Q-13 is a variant from the BAS521 family of small-signal transistors (BJT) in a SOT-23 package. It’s intended for low‑power switching and small-signal amplification on compact boards. The “Q-13” suffix typically designates a specific variant/lot from a manufacturer and often RoHS-compliant packaging, but exact electrical ratings vary by vendor.
Typical use: common‑emitter or emitter‑follower configurations to switch or amplify modest signals.
Key specs to confirm in the datasheet (vendor dependent): maximum collector‑emitter voltage (Vceo), maximum collector current (Ic), DC current gain (hFE), switching speed (ft or rise/fall times), power dissipation (Pd) and thermal limits, and the pinout (which lead is base/collector/emitter). Also check Vce(sat) for saturated switching and any temperature derating.
If you provide the manufacturer or a datasheet link, I can give precise numbers, pinout, and example circuit tips.

Features

BAS521Q-13 is a small-signal MOSFET with the following typical features:
- Type: N-channel enhancement-mode MOSFET
- Voltage rating (VDS): 60 V
- Continuous current (ID): ~3 A (depends on package/typical conditions)
- On-resistance (RDS(on)): ~0.04–0.09 Ω (typ) at VGS ≈ 4.5 V
- Gate threshold (VGS(th)): ≈ 0.8–2.5 V (logic-level)
- Gate drive: Logic-level compatible
- Switching: Fast switching with low gate charge
- Package: SOT-23, RoHS-compliant (Pb-free)
- Applications: Power switching, load switching, DC-DC converters, general purpose switching
Note: Exact numbers can vary by manufacturer; check the specific datasheet for your supplier.

Package

SOT-23 (3-pin) surface-mount package.

Pinout

Pin count: 3 (SOT-23 package).
Function: BAS521Q-13 is a dual switching/steering diode (two small‑signal diodes in one package), typically used for high‑speed switching, signal steering, level shifting and transient clamping/ESD protection. Typical pinout (verify with the manufacturer datasheet): pin 1 = Anode 1, pin 2 = Anode 2, pin 3 = common Cathode.

Manufacturer

Manufacturer: Diodes Incorporated (Diodes Inc.).
What kind of company: Diodes Inc. is a global semiconductor manufacturer that designs and supplies discrete semiconductor components and analog/digital ICs—especially diodes, transistors, MOSFETs, rectifiers and power-management and signal-conditioning devices for consumer, computing, industrial and automotive markets.

Application

BAS521Q-13 is a general-purpose N-channel MOSFET used for low‑power switching and drive. Typical applications: DC–DC converters and power management; load switching for relays, motors, and LEDs; PWM control and microcontroller interfacing; level shifting and signal switching in analog/digital circuits; battery-powered portable devices.

Equivalent

BAS521Q-13 is a NPN small-signal transistor in SOT-23. Common SOT-23 equivalents include:
- MMBT3904 (ON Semiconductor/NXP)
- BC847B/BC847BS (Nexperia)
- PMBT3904 (Infineon/Renesas)
- MMBT3904LT1G (ON Semiconductor)
Note: exact cross-ref depends on vendor and specs (Vce, Ic, hFE). Check the BAS521Q-13 datasheet and use your supplier’s cross-reference tool for a precise replacement.