PAGE . 1
REV.0.1-FEB.11.2009
DATA SHEET
BAS21A/C/S
SURFACE MOUNT, HIGH VOLTAGE, DUAL SWITCHING DIODES
VOLTAGE 250 Volts 250mWatts
POWER
ABSOLUTE RATINGS
COMMON ANODE
RETEMARAPlobmySeulaVstinU
egatloVesreveRmumixaM V
R
052V
egatloVesreveRkaeP V
RRM
052V
52=pmeTtatnerruCdeifitceRegarevA
O
CI
O
2.0A
µ
s0.1=ttatnerruCegruSdrawroFkaePevititeper-noN I
FSM A
4.0
THERMAL CHARACTERISTICS
RETEMARAPlobmySeulaVstinU
noitapissiDrewoP P
TOT
052Wm
tneibmAotnoitcnuJ,ecnatsiseRlamrehT Rθ
JA
753
O
W/C
erutarepmeTnoitcnuJ T
J
051
O
C
erutarepmeTegarotS T
STG
051ot55-
O
C
SERIES
COMMON CATHODE
BAS21A
BAS21C
BAS21S
1
3
2
2
3
1
3
2
1
FEATURES
• High reverse bearkdown voltage.
• Fast switching speed.
• Low reverse leakage current.
• Surface mount package ideally suited for automatic insertion.
• Galvanically isolated dual configurations to save board space.
• /HDGIUHHLQFRPSO\ZLWK(85R+6(&GLUHFWLYHV

*UHHQPROGLQJFRPSRXQGDVSHU,(&6WG+DORJHQ)UHH
MECHANICAL
Case: SOT -23, Plastic
Terminals: Solderable per MIL-STD-750, Method 2026
Approx. Weight: 0.008 gramV
Marking : BAS21A:21A, BAS21C:21C, BAS21S:21S
DATA
SOT-23
Unit inch(mm)：
0.120(3.04)
0.110(2.80)
0.056(1.40)
0.047(1.20)
0.079(2.00)
0.070(1.80)
0.004(0.10)MAX.
0.020(0.50)
0.013(0.35)
0.044(1.10)
0.035(0.90)
0.006(0.15)MIN.
0.103(2.60)
0.086(2.20)
0.008(0.20)
0.003(0.08)
PAGE . 2
REV.0.1-FEB.11.2009
100
1000
01.0 2.0
10
1.0
0.1
0.01
6.0
0
4.5
3.0
1.5
0
246 8
T=25C
J
O
0
200
300
400
500
100
50 100 150 200
P POWER DISSIPATION (mW)
D
,
DIODE CAPACITANCE, pF
AMBIENT TEMPERATURE( C)
O
FORWARD VOLTAGE, VOLTS
REVERSE VOLTAGE, VOLTS
FORWARD CURRENT, mA
0
T , JUNCTION TEMPERATURE, C
J
O
I , LEAKAGE CURRENT, uA
R
0.01
0.1
1.0
10
100
100 200
Fig.2 LEAKAGE CURRENT vs JUNCTION TEMPERATURE
FIG. 1-TYPICAL FORWARD CHARACTERISTIC
FIG. 4 POWER DERATING CURVE
FIG. 3 TYPICAL JUNCTION CAPACITANCE
ELECTRICAL CHARACTERISTICS
RETEMARAPlobmySnoitidnoCtseT.NIM.PYT.XAMstinU
egatloVnwodkaerBesreveRV
(BR)
I
R
001=uA ----052V
tnerruCesreveRI
R
V
R
002=V
V
R
002=,VT
J
=051
O
C----1.0 001 Au
egatloVdrawroFV
F
I
F
0.1=mA
I
F
001=mA ----07.0 00.1 V
ecnaticapaCnoitcnuJmumixaMC
J
V
R
,V0=f HM0.1=
Z
----0.5Fp
emiTyrevoceResreveRrrTI
F
I=
R
03=m,AR
L
001= Ω----05sn
ELECTRICAL CHARACTERISTICS CURVES
PAGE . 3
REV.0.1-FEB.11.2009
MOUNTING PAD LAYOUT
• Packing information
T/R - 12K per 13" plastic Reel
T/R - 3K per 7” plastic Reel
ORDER INFORMATION
LEGAL STATEMENT
Copyright PanJit International, Inc 2012
The information presented in this document is believed to be accurate and reliable. The specifications and information herein
are subject to change without notice. Pan Jit makes no warranty, representation or guarantee regarding the suitability of its
products for any particular purpose. Pan Jit products are not authorized for use in life support devices or systems. Pan Jit
does not convey any license under its patent rights or rights of others.
SOT-23
0.031 MIN.
(0.80) MIN.
0.037
(0.95)
0.043
(1.10)
0.078
(2.00)
0.035 MIN.
(0.90) MIN.
0.043
(1.10)
0.106
(2.70)
Unit inch(mm)：
Part No_packing code_Version
For example :
RB500V-40_R2_00000
Serial number
Part No. Version code means HF
Packing size code means 13"
Packing type means T/R
Packing
type 1st Code Packing size
code 2nd Code HF or RoHS 1st Code 2nd~5th Code
T/B AN/A 0HF 0 serial number
T/R R7" 1RoHS 1 serial number
B/P B13" 2
T/P T26mm X
TRR S52mm Y
TRL LPBCU U
FORMING FPBCD D
Packing Code XX Version Code XXXXX
PAGE . 4
REV.0.1-FEB.11.2009