72. NPN Transistor for Relay Coil Driver
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MMBT3904-TP
| DigiKey Part No | MMBT3904TPMSTR-ND |
| Mfr Part No | MMBT3904-TP |
| Manufacturer | MCC (Micro Commercial Components) |
TRANS NPN 40V 0.2A SOT-23
Bipolar (BJT) Transistor NPN 40 V 200 mA 300MHz 350 mW Surface Mount SOT-23
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✅ Transistor Type: NPN, matches the required transistor type.
✅ Current - Collector (Ic) (Max): 200 mA, meets the minimum ≥200 mA requirement.
✅ Voltage - Collector Emitter Breakdown (Max): 40 V, exceeds the required ≥30 V.
✅ DC Current Gain (hFE) (Min): 100, satisfies the required ≥80.
✅ Vce Saturation (Max): 300 mV, meets the required ≤400 mV.
✅ Power - Max: 350 mW, exceeds the required ≥200 mW.
✅ Mounting Type: Surface Mount, matches requirement.
✅ Package / Case: TO-236-3, SC-59, SOT-23-3, acceptable SOT-23 variant and matches requirement.
✅ Operating Temperature: -55°C to 150°C, wider than the required -40°C to +125°C.
✅ RoHS Compliance: ROHS3 Compliant, satisfies requirement.
All required specifications are satisfied. This component is approved for the 3.3V MCU-driven 12V relay low-side switch application.
✅ Current - Collector (Ic) (Max): 200 mA, meets the minimum ≥200 mA requirement.
✅ Voltage - Collector Emitter Breakdown (Max): 40 V, exceeds the required ≥30 V.
✅ DC Current Gain (hFE) (Min): 100, satisfies the required ≥80.
✅ Vce Saturation (Max): 300 mV, meets the required ≤400 mV.
✅ Power - Max: 350 mW, exceeds the required ≥200 mW.
✅ Mounting Type: Surface Mount, matches requirement.
✅ Package / Case: TO-236-3, SC-59, SOT-23-3, acceptable SOT-23 variant and matches requirement.
✅ Operating Temperature: -55°C to 150°C, wider than the required -40°C to +125°C.
✅ RoHS Compliance: ROHS3 Compliant, satisfies requirement.
All required specifications are satisfied. This component is approved for the 3.3V MCU-driven 12V relay low-side switch application.
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