PTVSHC1TF24VBH
Bi-directional 24V High Capacitance TVS Protector
Description
The PTVSHC1TF24VBH transient voltage suppressor is designed to replace
multilayer varistors (MLVs) in portable applications such as cell phones,
notebook computers, and PDA’s. They feature large cross-sectional area
junctions for conducting high transient currents, offer desirable electrical
characteristics for board level protection, such as fast response time, lower
operating voltage, lower clamping voltage and no device degradation when
compared
to
MLVs.
The
PTVSHC1TF24VBH
protects
sensitive
semiconductor components from damage or upset due to electrostatic
SOD-123FL (Top View)
discharge (ESD) and other voltage induced transient events. The
PTVSHC1TF24VBH is available in a SOD-123FL package with working
voltages of 24 volt.
Feature
6500W Peak pulse power per line (tP = 8/20μs)
SOD-123FL package
Response time is typically < 1 ns
Protect one I/O or power line
Low clamping Voltage
RoHS compliant
Transient protection for data lines to IEC 61000-4-2(ESD)
Pin 2
Pin 1
Circuit Diagram
±30KV(air), ±30KV(contact); IEC 61000-4-4 (EFT) 40A (5/50ns)
Applications
Cell phone handsets and accessories
Personal digital assistants (PDA’s)
Notebooks, desktops, and servers
Portable instrumentation
Cordless phones
Digital cameras
Peripherals
MP3 players
BZ-V
Marking (Top View)
Mechanical Characteristics
Lead finish:100% matte Sn(Tin)
Mounting position: Any
Qualified max reflow temperature:260℃
Device meets MSL 1 requirements
Pure tin plating: 7 ~ 17 um
Pin flatness:≤3mil
Rev.06.1
1
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Transient Voltage Suppressor
PTVSHC1TF24VBH
Electronics Parameter
Symbol
VRWM
IR
VBR
Parameter
I
IPP
Peak Reverse Working Voltage
Reverse Leakage Current @ VRWM
Breakdown Voltage @ IT
IT
Test Current
IPP
Maximum Reverse Peak Pulse Current
VC
Clamping Voltage @ IPP
PPP
Peak Pulse Power
CJ
Junction Capacitance
IT
IR
VC VBR VRWM
V
IR
IT
VRWM VBR VC
IPP
Electrical characteristics per line@25℃( unless otherwise specified)
Parameter
Symbol
Peak Reverse Working Voltage
VRWM
Breakdown Voltage
Conditions
Min.
Typ.
26
Max.
Units
24
V
30
V
1
μA
VBR
It =1mA
Reverse Leakage Current
IR
VRWM =24V
Clamping Voltage
VC
IPP=140A
tP = 8/20μs
33
34
V
Clamping Voltage
VC
IPP=185A
tP = 8/20μs
35
38
V
Junction Capacitance
Cj
VR=0V
f = 1MHz
315
pF
Absolute maximum rating@25℃
Rating
Symbol
Value
Units
Peak Pulse Power ( tP = 8/20μS )
Ppp
6500
W
Peak pulse current(tp=8/20us)
IPP
185
A
Lead Soldering Temperature
TL
260 (10 sec)
℃
Operating Temperature
TJ
-55 to 150
℃
TSTG
-55 to 150
℃
Storage Temperature
Rev.06.1
2
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Transient Voltage Suppressor
PTVSHC1TF24VBH
Typical Characteristics
tf=8μs
IPP – Peak Pulse Current - % of
IPP
100
100
60
% Of Rated Power
80
tP =20μs(IPP /2)
40
80
60
40
20
20
0
0
5
10
15
t - Time -μs
20
25
0
30
0
25
Fig 1.Pulse Waveform
125
150
20
24
Fig 2.Power Derating Curve
40
350
Pulse waveform: tp=8/20us
f=1MHz
35
300
30
C-Junction capacitance (pF)
VC-Clamping Voltage (V)
50
75
100
TL – Lead Temperature - ℃
25
20
15
10
250
200
150
100
50
5
0
0
0
50
100
150
IPP-Peak pulse current (A)
200
250
0
4
Fig 3. Clamping voltage vs. Peak pulse current
8
12
16
VR-Reverse voltage (V)
Fig 4. Capacitance vs. Reveres voltage
100000
600
10000
IR(nA)
Peak Pulse Power (W)
450
300
1000
150
100
1
0
10
100
Pulse Duration(us)
0
1000
Fig 5. Non Repetitive Peak Pulse Power vs. Pulse time
Rev.06.1
25
50
75
100
Temperature (ºC)
125
150
Fig 6.Typical Leakage Current vs. Temperature
3
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Transient Voltage Suppressor
PTVSHC1TF24VBH
Solder Reflow Recommendation
Peak Temp=257℃, Ramp Rate=0.802deg. ℃/sec
280
240
200
160
120
80
40
0
0
30
60
90
120
150
180
240
210
270
300
330
360
390
420
450
480
Time (sec)
PCB Design
For TVS diodes a low-ohmic and low-inductive path to chassis earth is absolutely mandatory in order to achieve good ESD
protection. Novices in the area of ESD protection should take following suggestions to heart:
Do not use stubs, but place the cathode of the TVS diode directly on the signal trace.
Do not make false economies and save copper for the ground connection.
Place via holes to ground as close as possible to the anode of the TVS diode.
Use as many via holes as possible for the ground connection.
Keep the length of via holes in mind! The longer the more inductance they will have.
Rev.06.1
4
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Transient Voltage Suppressor
PTVSHC1TF24VBH
Product dimension (SOD-123FL)
D
e
E
A
C
g
HE
Dim
Inches
Millimeters
MIN
Typ
MAX
MIN
Typ
MAX
A
0.037
0.038
0.039
0.95
0.97
1.00
C
0.002
0.006
0.010
0.05
0.15
0.25
HE
0.146
0.154
0.161
3.70
3.90
4.10
E
0.063
0.071
0.079
1.60
1.80
2.00
D
0.106
0.114
0.122
2.70
2.90
3.10
g
0.022
0.030
0.037
0.55
0.75
0.95
e
0.031
0.039
0.047
0.80
1.00
1.20
1.2
2.0
1.2
1.4
Unit:mm
Suggested PCB Layout
Ordering information
Device
Package
Reel
Shipping
PTVSHC1TF24VBH
SOD-123FL (Pb-Free)
7"
3000 / Tape & Reel
Rev.06.1
5
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Transient Voltage Suppressor
PTVSHC1TF24VBH
Load with information
USER DIRECTION OF FEED
2.00 ± 0.05
4.00 ± 0.10
4.00 ± 0.10
Φ1.55 ± 0.05
1.75 ± 0.10
3.50 ± 0.05
8.00 ± 0.10
Φ1.10 ± 0.10
Rev.06.1
6
Unit:mm
www.prisemi.com
Transient Voltage Suppressor
PTVSHC1TF24VBH
IMPORTANT NOTICE
and
are registered trademarks of Prisemi Electronics Co., Ltd (Prisemi) ,Prisemi
reserves the right to make changes without further notice to any products herein. Prisemi makes
no warranty, representation or guarantee regarding the suitability of its products for any particular
purpose, nor does Prisemi
assume any liability arising out of the application or use of any
product or circuit, and specifically disclaims any and all liability, including without limitation
special, consequential or incidental damages. “Typical” parameters which may be provided in
Prisemi data sheets and/or specifications can and do vary in different applications and actual
performance may vary over time. All operating parameters, including “Typicals” must be
validated for each customer application by customer’s technical experts. Prisemi does not
convey any license under its patent rights nor the rights of others. The products listed in this
document are designed to be used with ordinary electronic equipment or devices, Should you
intend to use these products with equipment or devices which require an extremely high level of
reliability and the malfunction of with would directly endanger human life (such as medical
instruments, aerospace machinery, nuclear-reactor controllers, fuel controllers and other safety
devices), please be sure to consult with our sales representative in advance.
Website: http://www.prisemi.com
For additional information, please contact your local Sales Representative.
©Copyright 2009, Prisemi Electronics
is a registered trademark of Prisemi Electronics.
All rights are reserved.
Rev.06.1
7
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