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ROHM Semiconductor QST9TR — Microcontrollers & Processors (MCU / MPU / DSP)
ROHM Semiconductor

QST9TR Dual PNP Transistor, 30V 1A, 320MHz, TSMT6

MPNQST9TR
End of Life

ROHM QST9TR dual PNP transistor, 30V VCEO, 1A IC, 320MHz transition frequency, 1.25W max power, in TSMT6 (SC-95) surface-mount package.

$0.62Ref. price · indicative, final on quote
QST9TR datasheet
PackagingSOT-23-6 Thin, TSOT-23-6
StockContact for availability
MOQ1 pcs
  • 100% new & originalTraceable channels only — no refurbs, no pulls, no remarked parts.
  • Date & lot codes on quoteStated per line before you commit; label photos on request.
  • MSL-compliant ESD packingMoisture-sealed bags with indicator cards; reels photo-verified.
  • PayPal buyer protectionPay by T/T, PayPal or Payoneer — card payments covered end to end.

Specifications

QST9TR Technical Specifications
ParameterValue
Mounting typeSurface Mount
FET type2 PNP (Dual)
Voltage - collector emitter breakdown30V
Current - collector (Ic)1A
Current - collector cutoff100nA (ICBO)
DC current gain (hFE) (Min) @ ic, vce270 @ 100mA, 2V
Power - max1.25W
Frequency320MHz
Operating temperature150°C (TJ)
PackageTape & Reel (TR); Cut Tape (CT)
CaseSOT-23-6 Thin, TSOT-23-6
Vce saturation (Max) @ ib, ic350mV @ 25mA, 500mA

Product details

The ROHM QST9TR is a dual PNP transistor array in a compact TSMT6 (SC-95) surface-mount package.

Key ratings that decide the fit

The 320 MHz transition frequency (fT) means this part can handle fast switching in DC-DC converters or level shifters without excessive switching loss. The minimum DC current gain of 270 at 100 mA collector current means a microcontroller I/O pin can drive the base directly through a modest resistor, saving a driver stage. Saturation voltage is specified at 350 mV max at 500 mA collector current — low enough to keep dissipation manageable in a 1.25 W package.

Lifecycle and sourcing reality

It is ROHS3 compliant.

Frequently asked questions

What is the closest pin-compatible alternative to QST9TR?

The QST9TR is a dual PNP transistor in TSMT6 (SC-95). A direct pin-compatible alternative would need the same package and dual PNP configuration. The evidence does not list an official cross-reference or second-source part number.

What is the QST9TR's maximum power dissipation?

The maximum power dissipation is 1.25 W.