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ASM12H  
2-Line uni-directional TVS Diode Array  
Description  
Mechanical Characteristics  
The ASM12H is an uni-directional TVS diode array, utiliz-  
ing leading monolithic silicon technology to provide fast  
response time and low ESD clamping voltage, making  
this device an ideal solution for protecting sensitive semi-  
conductor components from damage. The ASM12H com-  
plies with the IEC 61000-4-2 (ESD) with ±30kV air and  
±30kV contact discharge. It is assembled into a lead-free  
SOT-23 package. It is designed to protect components  
which are connected to data and transmission lines from  
voltage surges.  
Package: SOT-23  
Lead Finish: Matte Tin  
Case Material: “Green” Molding Compound.  
Terminal Connections: See Diagram Below  
Marking Information: See Below  
Applications  
Cellular Handsets and Accessories  
Notebooks and Handhelds  
Portable Instrumentation  
Set Top Box  
Features  
Industrial Controls  
500W peak pulse power (8/20μs)  
Protects two uni-directional lines  
Ultra low leakage: nA level  
Server and Desktop PC  
Marking Information  
Operating voltage: 12V  
Low clamping voltage  
Complies with following standards:  
– IEC 61000-4-2 (ESD) immunity test  
Air discharge: ±30kV  
3
Contact discharge: ±30kV  
– IEC61000-4-5 (Lightning) 22A (8/20μs)  
S12H  
RoHS Compliant  
1
2
Ordering Information  
Dimensions and Pin Configuration  
Part Number  
Packaging  
3000/Tape & Reel  
Reel Size  
ASM12H  
7 inch  
Circuit and Pin Schematic  
Revision _1.0  
1 of 5  
www.appliedpowermicro.com  
ASM12H  
Absolute Maximum Ratings (TA=25°C unless otherwise specified)  
Parameter  
Symbol  
Value  
Unit  
Peak Pulse Power (8/20µs)  
Ppk  
500  
W
Peak Pulse Current (8/20µs)  
IPP  
22  
A
ESD per IEC 61000−4−2 (Air)  
±30  
±30  
VESD  
kV  
ESD per IEC 61000−4−2 (Contact)  
Operating Temperature Range  
Storage Temperature Range  
TJ  
−55 to +125  
−55 to +150  
°C  
°C  
Tstg  
Electrical Characteristics (TA=25°C unless otherwise specified)  
ASM12H  
Parameter  
Symbol Min  
Typ  
Max  
Unit Test Condition  
Reverse Working Voltage  
VRWM  
12  
V
Breakdown Voltage  
Reverse Leakage Current  
Clamping Voltage  
VBR  
IR  
13.3  
V
μA  
V
IT = 1mA  
0.2  
18  
23  
VRWM = 12V  
VC  
VC  
IPP = 1A (8 x 20µs pulse)  
IPP = 22A (8 x 20µs pulse)  
Clamping Voltage  
V
VR = 0V, f = 1MHz, Pin 1 to Pin 3  
or Pin 2 to Pin 3  
Junction Capacitance  
CJ  
140  
pF  
Revision _1.0  
2 of 5  
www.appliedpowermicro.com  
ASM12H  
Typical Performance Characteristics (TA=25°C unless otherwise Specified)  
150  
120  
90  
60  
30  
0
0
2
4
6
8
10  
12  
Reverse Voltage_VR (V)  
Peak Pulse Power vs. Pulse Time  
Junction Capacitance vs. Reverse Voltage  
Power Derating Curve  
Clamping Voltage vs. Peak Pulse Current  
Note：Data is taken with a 10x attenuator  
ESD Clamping Voltage  
8 X 20μs Pulse Waveform  
8 kV Contact per IEC61000−4−2  
Revision _1.0  
3 of 5  
www.appliedpowermicro.com  
ASM12H  
SOT-23 Package Outline Drawing  
DIMENSIONS  
MILLIMETERS  
INCHES  
NOM  
- -  
SYM  
MIN  
0.90  
NOM  
MAX  
MIN  
MAX  
A
A1  
A2  
b
- -  
1.15  
0.10  
1.05  
0.50  
0.15  
3.00  
1.40  
0.035  
0.045  
0.00  
0.90  
0.30  
0.08  
2.80  
1.20  
- -  
- -  
- -  
- -  
- -  
- -  
0.000  
0.035  
0.012  
0.003  
0.110  
0.047  
- -  
- -  
- -  
- -  
- -  
- -  
0.004  
0.041  
0.020  
0.006  
0.118  
0.055  
c
D
E
E1  
e
2.25  
- -  
2.55  
0.089  
0.100  
0.95TYP  
0.037TYP  
e1  
L
1.80  
- -  
0.55REF  
- -  
2.00  
0.071  
- -  
0.022REF  
- -  
0.079  
L1  
Θ
0.30  
0.50  
0.012  
0.020  
- -  
- -  
0°  
8°  
0°  
8°  
Revision _1.0  
4 of 5  
www.appliedpowermicro.com  
ASM12H  
Suggested Land Pattern  
DIMENSIONS  
INCHES MILLIMETERS  
SYM  
C
E
.087  
.037  
.075  
.031  
.039  
.055  
.141  
2.20  
0.95  
1.90  
0.80  
1.00  
1.40  
3.60  
E1  
G
X
Y
Z
Contact Information  
Applied Power Microelectronics Inc.  
Website: http://www.appliedpowermicro.com  
Email: sales@appliedpowermicro.com  
Phone: +86 (0519) 8399 3606  
Applied Power Microelectronics Inc. (APM) reserves the right to make changes to the product specification and data in this document without notice. APM makes no warranty, representation or  
guarantee regarding the suitability of its products for any particular purpose, nor does APM assume any liability arising from the application or use of any products or circuits, and specifically dis-  
claims any and all liability, including without limitation special, consequential or incidental damages.  
Revision _1.0  
5 of 5  
www.appliedpowermicro.com