ULN2803ADWRG4 vs ZDT1053TA
| Part Number |
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| Category | Transistors - Bipolar (BJT) - Arrays | Transistors - Bipolar (BJT) - Arrays |
| Manufacturer | Texas Instruments | Diodes Incorporated |
| Description | TRANS 8NPN DARL 50V 0.5A 18SOIC | TRANS 2NPN 75V 5A SM8 |
| Package | Tape & Reel (TR) | -Reel® |
| Series | Automotive, AEC-Q100 | - |
| Operating Temperature | -40°C ~ 85°C (TA) | -55°C ~ 150°C (TJ) |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | 18-SOIC (0.295\", 7.50mm Width) | SOT-223-8 |
| Supplier Device Package | 18-SOIC | SM8 |
| Power - Max | - | 2.75W |
| Transistor Type | 8 NPN Darlington | 2 NPN (Dual) |
| Current - Collector (Ic) (Max) | 500mA | 5A |
| Voltage - Collector Emitter Breakdown (Max) | 50V | 75V |
| Vce Saturation (Max) @ Ib, Ic | 1.6V @ 500µA, 350mA | 440mV @ 250mA, 5A |
| Current - Collector Cutoff (Max) | - | 10nA |
| DC Current Gain (hFE) (Min) @ Ic, Vce | - | 300 @ 1A, 2V |
| Frequency - Transition | - | 140MHz |
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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 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.
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3. Are there specific applications for dual BJT arrays?
Dual BJT arrays are commonly used in push-pull amplifier stages, LED drivers, or signal switching circuits.
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4. What are key specifications to consider when selecting a BJT array?
Important parameters include collector current (Ic), voltage rating (Vce), hFE (current gain), and thermal resistance for reliability in operation.
