October 2005 / C
Page 1
SEMICONDUCTOR
TAK CHEONG
®
500 mW LL-34 Hermetically
Sealed Glass Fast Switching
Diodes
Absolute Ma ximum Ra ti ng s TA = 25°C unless otherwise noted
Symbol Parameter Value Units
PD Power Dissipation 500 mW
TSTG Storage Temperature Range -65 to +200 °C
TJ Operating Junction Temperature +175 °C
WIV Working Inverse Voltage 75 V
IO Average Rectified Current 150 mA
IFM Non-repetitive Peak Forward Current 450 mA
IFSURGE Peak Forward Surge Current 2 A
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 Characteristics TA = 25°C unless otherwise noted Limits
Symbol Parameter Test Condition
Min Max Unit
BV Breakdown Voltage IR=100µA
IR=5µA
100
75
Volts
IR Reverse Leakage Current VR=20V
VR=75V
25
5
nA
µA
VF Forward Voltage TCLL4448, TCLL914B
TCLL4148, TCLL4148
TCLL4448, TCLL914B
IF=5mA
IF=10mA
IF=100mA
0.62 0.72
1.0
1.0 Volts
TRR Reverse Recovery Time IF=10mA, VR=6V
RL=100Ω
IRR=1mA
4 nS
C Capacitance VR=0V, f=1MHZ 4 pF
Cathode Anode
ELECTRICAL SYMBOL
TCLL4148/TCLL4448/TCLL914B
DEVICE MARKING DIAGRAM
Cathode Band Color : Black
SURFACE MOUNT
LL34
October 2005 / C
Page 2
SEMICONDUCTOR
TAK CHEONG
®
Electrical Symbol Definition Typical Characteristics
Symbol Parameter
BV Breakdown Voltage @ IR
IR Reverse Leakage Current @ VR
VR Reverse Voltage
IF Forward Current
VF Forward Voltage @ IF
Ordering Information
Device Pack Option Package Quantity
TCLLxxxx 7” Reel Tape and Reel 2,500
TCLLxxxxR13 13” Reel Tape and Reel 10,000
TCLLxxxx Others (…contact Tak Cheong sales representatives)
LL34 (Mini-MELF) Tape Packaging Standards
This standard practices for surface-mount tape packaging of leadless (Mini-MELF) components meets the requirements of EI A Standard
RS-481-A.
V
I
(mV)
(V)
(mA)
(µA)
VF
IF
BV
IR
IR
VR
(nA)
October 2005 / C
Page 3
SEMICONDUCTOR
TAK CHEONG
®
LL-34 (Mini-MELF) Tape & Reel Packaging Information
Label
Antistatic Cover Tape
Static Dissipative Embossed
Carrier Tape
Cathode
Label
LL34 UNIT ORIENTATION
Carrier Tape
Cover Tape Trailer Tape
80mm minimum or
20 empty pockets.
Leader Tape
500mm minimum or
125 empty pockets.
Components
Packaging Description:
LL34 parts are shipped in tape and reel.
The c arrier ta pe is mad e from a dis sipati ve
(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 178mm
diameter reel. The reels are blue in color
and made of recyclable plastic. Other
option comes in 10,000 units per 13” or
330mm diameter reel
LL-34 Packaging Outline
LL-34 Leader and Trailer
October 2005 / C
Page 4
SEMICONDUCTOR
TAK CHEONG
®
LL-34 (Mini-MELF) Tape & Reel Packaging Information
LL-34 Reel Outline
Dimensions are in millimeters
Tape Size QTY Option Dim A Dim B Dim C Dim D Dim N W1 W2 W3
2,500 178 1.5 13 20.2 55 8.4 14.4 7.9 – 10.9
8mm 10,000 330 1.5 13 20.2 100 8.4 14.4 7.9 – 10.9
October 2005 / C
Page 5
SEMICONDUCTOR
TAK CHEONG
®
Package Outline
Package Case Outline
LL34
LL-34
Millimeters Inches
DIM
Min Max Min Max
A 3.302 3.505 0.130 0.138
B 1.397 1.499 0.055 0.059
C 0.350 0.500 0.014 0.020
Notes: 1. LL34 polarity denoted by a band.
2. ‘Expansion Gap’ has no relation to the location of polarity.
