Planar passivated Silicon Controlled Rectifier with sensitive gate in a SOT54 (TO-92) plastic package. This SCR is designed to be interfaced directly to microcontrollers, logic ICs and other low power gate trigger circuits.

Features and Benefits
  • Enhanced voltage capability
  • Planar passivated for voltage ruggedness and reliability
  • Sensitive gate
  • Direct triggering from low power drivers and logic ICs
  • General purpose switching and phase control
Package version
Package name
Product status
Tj [max]
VRRM [max]
Product Parametric
Type Number Symbol Parameter Conditions Min Typ/Nom Max Unit
BT149G VDRM repetitive peak off-state voltage       600 V
VRRM repetitive peak reverse voltage       600 V
ITSM non-repetitive peak on-state current half sine wave; Tj(init) = 25 °C; tp = 10 ms     8 A
IT(AV) average on-state current half sine wave; Tlead ≤ 83 °C     0.5 A
IT(RMS) RMS on-state current half sine wave; Tlead ≤ 83 °C     0.8 A
IGT gate trigger current VD = 12 V; IT = 10 mA; Tj = 25 °C   50 200 µA
Type number Package Packing Product status Marking Orderable part number Ordering code (12NC)
Package details  
Ammopack, Radial Volume production Standard Marking BT149G,126 9339 984 40126
Bulk Pack, Straight Leads (TO-92) BT149G,412 9339 984 40412
Quality, reliability & chemical content
Chemical content Orderable part number Type number RoHS / RHF Leadfree conversion date MSL MSL LF
BT149G BT149G,126   BT149G Lead-freeG week 5, 2005 NA NA
Lead-freeG week 5, 2005 NA NA
Ordering & availability
Type number Ordering code (12NC) Orderable part number Region Distributor Order sample
BT149G 9339 984 40126 BT149G,126 NA NA  
9339 984 40412 BT149G,412
9339 984 40413 BT149G,413
9339 984 40112 X
IGT [max]
IT(RMS) [max]
ITSM [max] @ 50 Hz
VDRM [max]
Cross Reference
DRA03TG FS0102MB FS0103MB SF0R3G42 SF0R3G42IG5 SF0R3J42
Orderable part number
BT149G,126; BT149G,412

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