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BAS21Q

Surface-Mount Fast Switching Diode

Datasheet

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Feature(s)

Fast Switching Speed
Surface-Mount Package Ideally Suited for Automated Insertion
For General-Purpose Switching Applications
High Conductance
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
The BAS20Q and BAS21Q are suitable for automotive applications requiring specific change control; these parts are AEC-Q101 qualified, PPAP capable, and manufactured in IATF 16949 certified facilities. https://www.diodes.com/quality/product-definitions/

Specifications & Technical Documents

Product Parameters

Compliance (Only Automotive Supports PPAP)	Automotive
AEC Qualified	Yes
Configuration	Single
Polarity	Anode, Cathode
Power Rating(mW)	350 mW
ESD Diodes (Y\|N)	No
Peak RepetitiveReverse VoltageV_RRM(V)	250 V
Reverse RecoveryTime trr (ns)	50 ns
Trr(ns) Max @ IF=IR=10 mA, Irr=0.1xIR, RL=100Ω	50
V(BR)R (V) Min @IR=100μA	250
Maximum Average Rectifier Current I_{O (mA)}	200 mA
Maximum Peak Forward Surge Current I_{FSM (A)}	2.5 A
Forward Voltage Drop V_F @ I_{F (mA)}	1 mA
Maximum ReverseCurrent I_R(µA)	0.1 µA
TotalCapacitance C_T(pF)	5 pF
Maximum Reverse Current I_R @ V_{R (V)}	250 V
VF(V) Max @ IF=1.0mA	0.9
VF(V) Max @ IF=10mA	1
CT(pF) Max @ VR = 0V, f = 1MHz	5

Technical Documents

Recommended Soldering Techniques

TN1.pdf

Purchase & Availability

Product Change Notices (PCNs)

A PCN may only apply to specific orderable part numbers in this datasheet. Please refer to the corresponding PCN to see the exact orderable part number(s) affected.

PCN #	Issue Date	Implementation Date	Subject
PCN-2770	2025-10-30	2025-10-30	Add Fab Site Code, Country of Diffusion (COD) and Assembly Site Origin (ASO) on Product and Shipping Labels for all Diodes Products
PCN-2545	2021-10-05	2022-01-05	Phenitec Wafer Manufacturing Site Change and Additional Wafer Source on Select Automotive Products
PCN-2462	2020-05-08	2021-04-11	Phenitec Wafer Manufacturing Site Change, Additional Wafer Sources, Wafer Diameter Change, Additional Assembly and Test Site (Automotive)