Transistors, How do they work?
Bipolar (Bjt) Single Transistor, Npn, 80 V, 3 Mhz, 25 W, 2 A, 40 Rohs Compliant: Yes
The devices are manufactured in Planar technology with a “Base Island” layout. The resulting transistor shows exceptional high gain performance coupled with very low saturation voltage. The PNP type is BD238.
The BD237 is manufactured in Planar technology with a “Base Island” layout. The resulting transistor shows exceptional high gain performance coupled with very low saturation voltage.
BD237 Internal Schematic Diagram
BD237 Symbol
BD237 Footprint
BD237 3D Model
BD237 Absolute Maximum Ratings
• High DC Current Gain
• Epoxy Meets UL 94 V0 @ 0.125 in
• These Devices are Pb−Free and are RoHS Compliant*
| Attribute | Value |
|---|---|
| Lifecycle Status | ACTIVE (Last Updated: 7 months ago) |
| Factory Lead Time | 8 Weeks |
| Contact Plating | Tin |
| Mount | Through Hole |
| Mounting Type | Through Hole |
| Package / Case | TO-225AA, TO-126-3 |
| Number of Pins | 3 |
| Transistor Element Material | SILICON |
| Number of Elements | 1 |
| Collector-Emitter Breakdown Voltage | 80V |
| Collector-Emitter Saturation Voltage | 600mV |
| hFEMin | 40 |
| Operating Temperature | 150°C TJ |
| Packaging | Tube |
| JESD-609 Code | e3 |
| Part Status | Active |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| Number of Terminations | 3 |
| ECCN Code | EAR99 |
| Voltage - Rated DC | 100V |
| Max Power Dissipation | 25W |
| Current Rating | 2A |
| Frequency | 3MHz |
| Base Part Number | BD237 |
| Attribute | Value |
|---|---|
| Pin Count | 3 |
| Element Configuration | Single |
| Power Dissipation | 25W |
| Case Connection | ISOLATED |
| Transistor Application | SWITCHING |
| Gain Bandwidth Product | 3MHz |
| Polarity/Channel Type | NPN |
| Transistor Type | NPN |
| Collector Emitter Voltage (VCEO) | 80V |
| Max Collector Current | 2A |
| DC Current Gain (hFE) (Min) @ Ic, Vce | 25 @ 1A 2V |
| Current - Collector Cutoff (Max) | 100μA ICBO |
| Vce Saturation (Max) @ Ib, Ic | 600mV @ 100mA, 1A |
| Transition Frequency | 3MHz |
| Collector Base Voltage (VCBO) | 80V |
| Emitter Base Voltage (VEBO) | 5V |
| VCEsat-Max | 0.6 V |
| Height | 10.8mm |
| Length | 7.8mm |
| Width | 2.7mm |
| REACH SVHC | No SVHC |
| Radiation Hardening | No |
| RoHS Status | ROHS3 Compliant |
| Lead Free | Lead Free |
BD237 Electrical Characteristics
BD237 Test circuit
In order to meet environmental requirements, ST offers these devices in different grades of ECOPACK® packages, depending on their level of environmental compliance. ECOPACK® specifications, grade definitions, and product status are available at: www.st.com. ECOPACK® is an ST trademark.
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