ZXT12P20DXTA vs MMDT3946-7
| Part Number |
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| Category | Transistors - Bipolar (BJT) - Arrays | Transistors - Bipolar (BJT) - Arrays |
| Manufacturer | Diodes Incorporated | Diodes Incorporated |
| Description | TRANS 2PNP 20V 2.5A 8MSOP | TRANS NPN/PNP 40V 0.2A SOT363 |
| Package | Tape & Reel (TR) | Cut Tape (CT) |
| Series | - | - |
| Operating Temperature | -55°C ~ 150°C (TJ) | -55°C ~ 150°C (TJ) |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | 8-TSSOP, 8-MSOP (0.118\", 3.00mm Width) | 6-TSSOP, SC-88, SOT-363 |
| Supplier Device Package | 8-MSOP | SOT-363 |
| Power - Max | 1.04W | 200mW |
| Transistor Type | 2 PNP (Dual) | NPN, PNP |
| Current - Collector (Ic) (Max) | 2.5A | 200mA |
| Voltage - Collector Emitter Breakdown (Max) | 20V | 40V |
| Vce Saturation (Max) @ Ib, Ic | 200mV @ 125mA, 2.5A | 300mV @ 5mA, 50mA, 400mV @ 5mA, 50mA |
| Current - Collector Cutoff (Max) | 100nA | - |
| DC Current Gain (hFE) (Min) @ Ic, Vce | 300 @ 1A, 2V | 100 @ 10mA, 1V |
| Frequency - Transition | 110MHz | 300MHz, 250MHz |
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1. What are BJT arrays used for?
BJT arrays are often used in analog circuits like amplifiers, switches, and oscillators where matched transistor pairs are required for balanced performance.
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2. What are the typical configurations in BJT arrays?
They can include combinations such as dual NPN, dual PNP, or mixed NPN and PNP transistors. Some arrays also include pre-biased transistors for specific applications.
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3. What is a pre-biased BJT array?
Pre-biased arrays have integrated resistors, simplifying circuit design and reducing external component count, ideal for switching or logic applications.
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4. What are the limitations of BJT arrays?
While they save space, they can limit flexibility if specific transistor types or configurations are needed. Also, thermal coupling might not always be beneficial in all scenarios.

