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SE M I CO N DU CTO R
500 mW LL-34 Hermetically Sealed Glass Fast Switching Diodes
SURFACE MOUNT LL34
Absolute Maximum Ratings
Symbol PD TSTG TJ WIV IO IFM IFSURGE Power Dissipation
TA = 25C unless otherwise noted Value 500 -65 to +200 +175 75 150 450 2 Units mW C C V mA mA A
Cathode Band Color : Black DEVICE MARKING DIAGRAM
Parameter
Storage Temperature Range Operating Junction Temperature Working Inverse Voltage Average Rectified Current Non-repetitive Peak Forward Current Peak Forward Surge Current
These ratings are limiting values above which the serviceability of the diode may be impaired.
Specification Features:
Fast Switching Device (TRR <4.0 nS) LL-34 (Mini-MELF) Package Surface Device Type Mounting Hermetically Sealed Glass Compression Bonded Construction All external surfaces are corrosion resistant and leads are readily solderable 1st band indicates negative polarity
ELECTRICAL SYMBOL Cathode Anode
Electrical Characteristics
Symbol BV Breakdown Voltage
TA = 25C unless otherwise noted Parameter Test Condition IR=100A IR=5A Limits Min 100 Volts 75 25 5 0.62 0.72 1.0 1.0 Volts nA A Max Unit
IR
Reverse Leakage Current
VR=20V VR=75V
VF
Forward Voltage
TCLL4448, TCLL914B TCLL4148, TCLL4148 TCLL4448, TCLL914B
IF=5mA IF=10mA IF=100mA IF=IR=10mA RL=100 IRR=1mA
TRR
Reverse Recovery Time
4
nS
C
Capacitance
VR=0V, f=1MHZ
4
pF
March 2002 / A Page 1
TCLL4148/TCLL4448/TCLL914B
TAK CHEONG
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TAK CHEONG
SE M I CO N DU CTO R Electrical Symbol Definition
Symbol Parameter
Typical Characteristics
I
(mA)
IF
BV
Breakdown Voltage @ IR
IR
Reverse Leakage Current @ VR
BV VR IR IR VF (mV) (V)
V
VR
Reverse Voltage
IF
Forward Current
(nA) (A)
VF
Forward Voltage @ IF
Ordering Information
Pack Option 7" Reel 13" Reel Others LL34 (Mini-MELF) Tape Packaging Standards This standard practices for surface-mount tape packaging of leadless (Mini-MELF) components meets the requirements of EIA Standard RS-481-A. Package Tape and Reel Tape and Reel Quantity 2,500 10,000
(...contact Tak Cheong sales representatives)
March 2002 / A Page 2
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TAK CHEONG
SE M I CO N DU CTO R LL-34 (Mini-MELF) Tape & Reel Packaging Information
LL-34 Packaging Outline
Label
Packaging Description: LL34 parts are shipped in tape and reel. The carrier tape is made from a dissipative (carton filled) polycarbonate resin. The cover tape is a multiplayer film (Heat Activated Adhesive in nature) primarily composed of polyester film, adhesive layer, sealant, and anti-static sprayed agent. These reeled parts in standard option are shipped with 2,500 units per 7" or 178cm diameter reel. The reels are blue in color and made of recyclable plastic. Other option comes in 10,000 units per 13" or 330cm diameter reel
Antistatic Cover Tape
Static Dissipative Embossed Carrier Tape
Cathode
LL34 UNIT ORIENTATION
Label
LL-34 Leader and Trailer
Carrier Tape Cover Tape Components Trailer Tape 80mm minimum or 20 empty pockets. Leader Tape 500mm minimum or 125 empty pockets.
March 2002 / A Page 3
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TAK CHEONG
SE M I CO N DU CTO R LL-34 (Mini-MELF) Tape & Reel Packaging Information
LL-34 Reel Outline
Dimensions are in millimeters Tape Size QTY Option 2,500 8mm 10,000 330 1.5 13 20.2 100 8.4 14.4 7.9 - 10.9 Dim A 178 Dim B 1.5 Dim C 13 Dim D 20.2 Dim N 55 W1 8.4 W2 14.4 W3 7.9 - 10.9
March 2002 / A Page 4
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TAK CHEONG
SE M I CO N DU CTO R Package Outline
Package Case Outline
LL-34 DIM
Min
Millimeters
Max 3.505 1.499 0.500 Min 0.130 0.055 0.014
Inches
Max 0.138 0.059 0.020
LL34 A B C
3.302 1.397 0.350
Notes: 1. 2. LL34 polarity denoted by a band. `Expansion Gap' has no relation to the location of polarity.
March 2002 / A Page 5

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