Semiconductor Components Industries, LLC, 2004
March, 2004 − Rev. 4
1 Publication Order Number:
MMT05A230T3/D
MMT05A230T3,
MMT05A260T3,
MMT05A310T3
Preferred Devices
Thyristor Surge Protectors
High Voltage Bidirectional TSPD
These Thyristor Surge Protective devices (TSPD) prevent
overvoltage damage to sensitive circuits by lightning, induction and
power line crossings. They are breakover−triggered crowbar
protectors. Turn−off occurs when the surge current falls below the
holding current value.
Secondary protection applications for electronic telecom equipment
at customer premises.
• High Surge Current Capability: 50 Amps 10 x 1000 µsec; for
Controlled Temperature Environments in the SMA package
• The MMT05A230T3 Series is used to help equipment meet various
regulatory requirements including: Telcordia 1089, ITU K.20 &
K.21, IEC 950 and FCC Part 68
• Bidirectional Protection in a Single Device
• Little Change of Voltage Limit with Transient Amplitude or Rate
• Freedom from Wearout Mechanisms Present in Non−Semiconductor
Devices
• Fail−Safe, Shorts When Overstressed, Preventing Continued
Unprotected Operation
• Surface Mount Technology (SMT)
• Indicates UL Registered − File #E210057
• Device Marking: MMT05A230T3: PBF; MMT05A260T3: PBG;
MMT05A310T3: PBJ
MAXIMUM RATINGS (T
J
= 25°C unless otherwise noted)
Rating Symbol Value Unit
Off−State Voltage − Maximum
MMT05A230T3
MMT05A260T3
MMT05A310T3
V
DM
170
200
270
Volts
Maximum Pulse Surge Short Circuit
Current Non−Repetitive
Double Exponential Decay Waveform
(Notes 1 and 2)
8 x 20 µsec
10 x 160 µsec
10 x 560 µsec
10 x 1000 µsec
I
PPS1
I
PPS2
I
PPS3
I
PPS4
150
100
70
50
A(pk)
Maximum Non−Repetitive Rate of
Change of On−State Current Double
Exponential Waveform,
I
PK
= 50 A, P
W
= 15 s
di/dt 100 A/µs
1. Allow cooling before testing second polarity.
2. Measured under pulse conditions to reduce heating.
BIDIRECTIONAL TSPD
50 AMP SURGE
265 thru 365 VOLTS
Preferred devices are recommended choices for future use
and best overall value.
Device Package Shipping
†
ORDERING INFORMATION
MMT05A230T3 SMA 12 mm Tape and Reel
(5 K/Reel)
MMT05A260T3 SMA
12 mm Tape and Reel
(5 K/Reel)
MMT05A310T3 SMA 12 mm Tape and Reel
(5 K/Reel)
MT1 MT2
SMA
(No Polarity)
CASE 403D
xxx = Specific Device Code
A = Assembly Location
Y = Year
W = Work Week
MARKING DIAGRAM
xxx
AYW
http://onsemi.com
†For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specification
Brochure, BRD8011/D.
