Toshiba Electronic Devices & Storage Corporation ("Toshiba") has launched five automotive bipolar transistor products for MOSFET gate drive circuits and LED drive circuits of automotive backlights and other applications : “TTA500, TTA501, TTA502, TTC500 and TTC501“. They use the small and highly allowable SOT-23F[1] package to collector power dissipation. The lineup includes collector-emitter voltage ratings from -50 V to 50 V and collector current ratings from -2.5 A to 2.5 A.

The new products use the SOT-23F[1] package and features absolute maximum ratings and electrical characteristics equivalent to products using the larger SOT-89[2] package. In addition, they have reduced their mounting area by about 60 % with equivalently allowable collector power dissipation. This helps reduce the size of equipment.
The SOT-23F[1] package uses a flat-lead structure while remaining land-pattern compatible with the SOT-23 package. In terms of mounting reliability, it has been checked against the temperature cycle requirement levels for automotive applications and satisfies the mounting quality requirements for automotive applications. The new products are also AEC-Q101 qualified.

And another product TTC502 that has 120 V collector-emitter voltage rating and 1 A collector current rating will be in mass production[3].

Notes :
[1] Package size 3.1 mm x 2.5 mm (max), mounting area 7.75 mm2 (max)
[2] Package size 4.6 mm x 4.2 mm (max), mounting area 19.32 mm2 (max)
[3] Mass procuction will be started in September, 2021. (as March of 2021)

Features

 
  • A wide range of collector-emitter voltage ratings in the lineup : VCEO=?50 V to 50 V
  • Small SOT-23F[1] package with highly allowable collector power dissipation :
      Featuring a collector power dissipation rating of 1 W (@DC) with a package size of 2.4 mm x 2.9 mm (typ.)
  • AEC-Q101 qualified

Applications

 
  • Automotive equipment (LED backlight, accessory light, etc.)
  • Consumer equipment, industrial equipment (LED display device, etc.)

Product Specifications

(@Ta=25 °C)

Part
number
Polarity Absolute maximum ratings Electrical characteristics Package
Collector-
emitter
voltage
VCEO
(V)
Collector
current
(DC)
IC
(A)
Collector
power
dissipation
DC
PC
(W)
Collector-
emitter
saturation
voltage
VCE(sat)
max
(V)
DC
current
gain
hFE
Name Size
typ.
(mm)
min max
TTA500 PNP -50 -1.0 1 -0.2 200 500 SOT-23F 2.9 × 2.4
TTA501 -50 -2.0 1 -0.2 200 500
TTA502 -20 -2.5 1 -0.19 200 500
TTC500 NPN 50 1.0 1 0.12 400 1000
TTC501 50 2.5 1 0.14 400 1000
TTC502[3] 120 1.0 1 0.14 120 300

Pin Assignments

The illustration of pin assignments of automotive bipolar transistors helping downsizing equipment : TTA500, TTA501, TTA502, TTC500, TTC501.

Application Circuit Examples

The illustration of application circuit examples of automotive bipolar transistors helping downsizing equipment : TTA500, TTA501, TTA502, TTC500, TTC501.


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