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| Distributor | Stock | Pricing | MOQ | PKG | Lead Time | Date Code | On Order Quantity | On Order Delivery | |
|---|---|---|---|---|---|---|---|---|---|
|
8,650 pcs
|
8650 pcs | On Request | 1 | On Request | On Request | On Request | On Request | On Request | |
|
3,968 pcs
|
3968 pcs | On Request | 1 | On Request | On Request | 11+ | On Request | On Request |
| Category | |
| Manufacturer Name | |
| Base Current (IB) | |
| Base-Emitter Voltage (VBE) | |
| Collector Cut-Off Current (ICES) | |
| Collector Cut-off Current (ICEO) | |
| Collector Peak Current (ICM) | |
| Current | |
| DC Current Gain (hFE) (Min) @ Ic, Vce | |
| DC Current Gain (hFE) (Minimum @ IC = 3 A, VCE = 4 V) | |
| Emitter Cut-off Current (IEBO) | |
| Emitter-Base Voltage (VEBO) | |
| Lead Style | |
| Mounting Type | |
| Power | |
| Power Dissipation (Ptot) (Maximum @ Case temperature ≤ 25 °C) | |
| Small Signal Current Gain (hfe) (Minimum @ IC = 0.5 A, VCE = 10 V, f = 1 MHz) | |
| Small Signal Current Gain (hfe) (Minimum @ IC = 0.5 A, VCE = 10 V, f = 1 kHz) | |
| Storage Temperature | |
| Supplier Device Package | |
| Tape & Reel | |
| Thermal Resistance Junction-to-Ambient (Rthj-amb) | |
| Thermal Resistance, Junction-to-Case (Rthj-case) | |
| Transistor Type | |
| Vce Saturation (Max) @ Ib, Ic | |
| Voltage |
The BD242B is a PNP silicon power transistor from STMicroelectronics, packaged in a TO-220-3 through-hole housing. It is designed for medium power linear and switching applications, offering a minimum collector-emitter voltage (VCEO) of 80V at 30mA and a maximum continuous collector current of 3A (5A peak). The device features a minimum DC current gain (hFE) of 25 at 1A and 10 at 3A, with a low collector-emitter saturation voltage of 1.2V maximum at 3A. Power dissipation is rated at 40W when the case temperature is ≤25°C and 2W at ambient temperature ≤25°C, with thermal resistance values of 3.13°C/W (junction-to-case) and 62.5°C/W (junction-to-ambient).
The BD242B is the complementary PNP type to the BD241B NPN transistor, making it suitable for push-pull and complementary pair configurations. The device can handle a base current up to 1A and has an emitter-base voltage rating of 5V. Storage temperature range is -65°C to +150°C. The TO-220 package allows efficient heat dissipation when mounted on a heatsink, making it appropriate for power supply, motor control, and audio amplifier circuits.
According to existing data, the BD242B is indicated as RoHS3 compliant and has an MSL of 1 (unlimited), though these compliance statuses are not yet verified against manufacturer documentation. The part is intended for general-purpose power switching and linear amplification where medium power handling and through-hole assembly are required.
| Qty | Low | High |
|---|---|---|
| 1+ | $1.09 | $1.09 |
| 10+ | $0.69 | $0.69 |
| 100+ | $0.48 | $0.48 |
| 1,000+ | $0.31 | $0.31 |
| 2,000+ | $0.28 | $0.28 |
| 5,000+ | $0.25 | $0.25 |
| 10,000+ | $0.24 | $0.24 |
| 25,000+ | $0.21 | $0.21 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The collector-emitter voltage (VCEO) is minimum 80V at IC=30mA.
The BD242B is offered in a TO-220-3 through-hole package.
-65°C to +150°C.
Existing data lists the BD242B as RoHS3 compliant, though this is unverified.
The maximum continuous collector current is 3A, with a peak current of 5A.
Maximum power dissipation is 40W at case temperature ≤25°C, and 2W at ambient temperature ≤25°C.
The complementary NPN transistor is the BD241B from STMicroelectronics.