SMT50 Series - SMT50 Series - SIDACtor® Protector Thyristor For Telecommunications Applications

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Disclaimer Notice

Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. "Littelfuse" includes Littelfuse, Inc., and all of its affiliate entities.

The electrical characteristics of a SMT50 device are similar to that of a self-gated Triac, but the SMT50 is a two terminal device with no gate. The gate function is achieved by an internal current controlled mechanism.

Access specifications, certifications, check availability and order parts below

Catalog #VDRM T-R
(V)
VS T-R
(V)
Pins T-RIscurrIDRM @
VDRM
(μA)
IH (mA)Regulatory RequirementsIpp2x10Ipp8x20Surge RatingCompare
SMT50-062
Obsolete: 2008 -12-31
56821-28005150GR1089 Intra-Building
GR1089 Inter-Building (Series Resistance Needed)
ITU K.20 (Series Resistance Needed)
ITU K.20 Enhanced (Series Resistance Needed)
ITU K.21 Enhanced (Series Resistance Needed)
TIA-968-A (Series Resistance Needed)
YD/T 993-1998 Without Primary (Series Resistance Needed)
250250A
SMT50-068
Obsolete: 2008 -12-31
60901-28005150GR1089 Intra-Building
GR1089 Inter-Building (Series Resistance Needed)
ITU K.20 (Series Resistance Needed)
ITU K.20 Enhanced (Series Resistance Needed)
ITU K.21 Enhanced (Series Resistance Needed)
TIA-968-A (Series Resistance Needed)
YD/T 993-1998 Without Primary (Series Resistance Needed)
250250A
SMT50-100
Obsolete: 2008 -12-31
901331-28005150GR1089 Intra-Building
GR1089 Inter-Building (Series Resistance Needed)
ITU K.20 (Series Resistance Needed)
ITU K.20 Enhanced (Series Resistance Needed)
ITU K.21 Enhanced (Series Resistance Needed)
TIA-968-A (Series Resistance Needed)
YD/T 993-1998 Without Primary (Series Resistance Needed)
250250A
SMT50-120
Obsolete: 2008 -12-31
1801601-28005150GR1089 Intra-Building
GR1089 Inter-Building (Series Resistance Needed)
ITU K.20 (Series Resistance Needed)
ITU K.20 Enhanced (Series Resistance Needed)
ITU K.21 Enhanced (Series Resistance Needed)
TIA-968-A (Series Resistance Needed)
YD/T 993-1998 Without Primary (Series Resistance Needed)
250250A
SMT50-130
Obsolete: 2008 -12-31
117171-28005150GR1089 Intra-Building
GR1089 Inter-Building (Series Resistance Needed)
ITU K.20 (Series Resistance Needed)
ITU K.20 Enhanced (Series Resistance Needed)
ITU K.21 Enhanced (Series Resistance Needed)
TIA-968-A (Series Resistance Needed)
YD/T 993-1998 Without Primary (Series Resistance Needed)
250250A
SMT50-180
Obsolete: 2008 -12-31
1622401-28005150GR1089 Intra-Building
GR1089 Inter-Building (Series Resistance Needed)
ITU K.20 (Series Resistance Needed)
ITU K.20 Enhanced (Series Resistance Needed)
ITU K.21 Enhanced (Series Resistance Needed)
TIA-968-A (Series Resistance Needed)
YD/T 993-1998 Without Primary (Series Resistance Needed)
250250A
SMT50-200
Obsolete: 2008 -12-31
1802671-28005150GR1089 Intra-Building
GR1089 Inter-Building (Series Resistance Needed)
ITU K.20 (Series Resistance Needed)
ITU K.20 Enhanced (Series Resistance Needed)
ITU K.21 Enhanced (Series Resistance Needed)
TIA-968-A (Series Resistance Needed)
YD/T 993-1998 Without Primary (Series Resistance Needed)
250250A
SMT50-220
Obsolete: 2008 -12-31
1982931-28005150GR1089 Intra-Building
GR1089 Inter-Building (Series Resistance Needed)
ITU K.20 (Series Resistance Needed)
ITU K.20 Enhanced (Series Resistance Needed)
ITU K.21 Enhanced (Series Resistance Needed)
TIA-968-A (Series Resistance Needed)
YD/T 993-1998 Without Primary (Series Resistance Needed)
250250A
SMT50-240
Obsolete: 2008 -12-31
2163201-28005150GR1089 Intra-Building
GR1089 Inter-Building (Series Resistance Needed)
ITU K.20 (Series Resistance Needed)
ITU K.20 Enhanced (Series Resistance Needed)
ITU K.21 Enhanced (Series Resistance Needed)
TIA-968-A (Series Resistance Needed)
YD/T 993-1998 Without Primary (Series Resistance Needed)
250250A
SMT50-270
Obsolete: 2008 -12-31
2433601-28005150GR1089 Intra-Building
GR1089 Inter-Building (Series Resistance Needed)
ITU K.20 (Series Resistance Needed)
ITU K.20 Enhanced (Series Resistance Needed)
ITU K.21 Enhanced (Series Resistance Needed)
TIA-968-A (Series Resistance Needed)
YD/T 993-1998 Without Primary (Series Resistance Needed)
250250A
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