UA1A-UA1M
Technical Data
Data Sheet N1509, Rev. A
UA1A-UA1M
Ultrafast Avalanche Diodes
Features
Ideally Suited for Automatic Assembly
Low Forward Overload Drop, High Efficiency
Low Power Loss
Super-Fast Recovery Time
Plastic Material has UL Classification 94V-O
This is a Pb − Free Device
All SMC parts are traceable to the wafer lot
Additional testing can be offered upon request
SMA
Circuit Diagram
Mechanical Data
Case: Low Profile Molded Plastic
Terminals: Solder Plated, Solderable per MIL-STD-750,
Method 2026
Polarity: Cathode Band or Cathode Notch
Weight: 0.06 grams(approx)
Maximum Ratings and Electrical Characteristics
@T
A
=25°C unless otherwise specified
Characteristic
Peak Repetitive Reverse Voltage
Surge Peak Reverse Voltage
Max. Average Forward Current
@T
L
=100°C
Peak Forward Surge Current
8.3ms Single half sine-wave superimposed
on rated load (JEDEC Method)
Maximum Forward voltage
Maximum Leakage Current
@IF =1.0A
@T
A
= 25°C
Symbol
V
RRM
V
RSM
I
F
I
FSM
V
F
I
R
Trr
R
ΘJA
E
AS
T
J
,T
STG
50
70
20
-55 to +150
1
UA1A
50
50
UA1B
100
100
UA1D
200
200
UA1G
400
400
1.0
30
1.25
3
75
1.7
UA1J UA1K
600
600
800
800
UA1M
1000
1000
Units
V
A
A
V
µA
ns
K/W
mJ
°C
Reverse Recovery Time (Note 1)
Max. thermal resistance junction to ambient
(Note 2)
Non-Repetitive Avalanche Energy(Note 3)
Operating Junction and Storage
Temperature Range
Note:
1. Measured with I
F
=0.5A, I
R
=1.0A, I
rr
=0.25A
2. Mounted on P.C. Board with 8.0mm
2
lead area
3. T
J
= 25°C, I
AS
=1.0mA, L=285mH
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UA1A-UA1M
Technical Data
Data Sheet N1509, Rev. A
Ratings and Characteristics Curves
China - Germany - Korea - Singapore - United States
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UA1A-UA1M
Technical Data
Data Sheet N1509, Rev. A
Mechanical Dimensions SMA
Millimeters
Min.
2.40
3.99
1.05
0.15
4.80
1.90
0.05
0.76
Max.
2.84
4.75
1.70
0.51
5.66
2.95
0.203
1.52
Inches
Min.
0.094
0.157
0.041
0.006
0.189
0.075
0.002
0.030
Max.
0.112
0.187
0.067
0.020
0.223
0.116
0.008
0.600
SYMBOL
A
B
C
D
E
F
G
H
Ordering Information
Device
UA1A-UA1M
SMA (Pb-Free)
Marking Diagram
5000pcs / reel
Package
Shipping
Where XXXXX is YYWWL
UA
1
A
YY
WW
L
= Device Type
= Forward Current (1A)
= Reverse Voltage (50V)
= Year
= Week
= Lot Number
For information on tape and reel specifications, including part
orientation and tape sizes, please refer to our tape and reel
packaging specification.
Cautions：Molding
resin
Epoxy resin UL:94V-0
Carrier Tape Specification SMA
SYMBOL
A
B
C
d
E
F
P
P0
P1
T
W
Millimeters
Min.
Max.
2.97
5.70
2.32
1.40
1.40
5.60
3.90
3.90
1.90
0.25
3.17
5.90
2.52
1.60
1.60
5.70
4.10
4.10
2.10
0.35
11.80
12.20
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UA1A-UA1M
Technical Data
Data Sheet N1509, Rev. A
DISCLAIMER:
1- The information given herein, including the specifications and dimensions, is subject to change without prior notice to improve product
characteristics. Before ordering, purchasers are advised to contact the SMC - Sangdest Microelectronics (Nanjing) Co., Ltd sales
department for the latest version of the datasheet(s).
2- In cases where extremely high reliability is required (such as use in nuclear power control, aerospace and aviation, traffic equipment,
medical equipment , and safety equipment) , safety should be ensured by using semiconductor devices that feature assured safety or by
means of users’ fail-safe precautions or other arrangement .
3- In no event shall SMC - Sangdest Microelectronics (Nanjing) Co., Ltd be liable for any damages that may result from an accident or
any other cause during operation of the user’s units according to the datasheet(s). SMC - Sangdest Microelectronics (Nanjing) Co., Ltd
assumes no responsibility for any intellectual property claims or any other problems that may result from applications of information,
products or circuits described in the datasheets.
4- In no event shall SMC - Sangdest Microelectronics (Nanjing) Co., Ltd be liable for any failure in a semiconductor device or any
secondary damage resulting from use at a value exceeding the absolute maximum rating.
5- No license is granted by the datasheet(s) under any patents or other rights of any third party or SMC - Sangdest Microelectronics
(Nanjing) Co., Ltd.
6- The datasheet(s) may not be reproduced or duplicated, in any form, in whole or part, without the expressed written permission of SMC
- Sangdest Microelectronics (Nanjing) Co., Ltd.
7- The products (technologies) described in the datasheet(s) are not to be provided to any party whose purpose in their application will
hinder maintenance of international peace and safety nor are they to be applied to that purpose by their direct purchasers or any third
party. When exporting these products (technologies), the necessary procedures are to be taken in accordance with related laws and
regulations..
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