Overview
The BC856A-7-F is a PNP general-purpose transistor produced by Diodes Incorporated. It is part of the BC856A series, which includes several variants with different voltage and current ratings. This transistor is housed in a small SOT23 (TO-236AB) surface-mounted device (SMD) plastic package, making it ideal for compact and efficient electronic designs. The BC856A is complementary to the NPN types BC846 and BC848, offering versatility in circuit design.
Key Specifications
| Characteristic | Symbol | Min | Typ | Max | Unit | Test Condition |
|---|---|---|---|---|---|---|
| Collector-Base Breakdown Voltage | BVCEO | -65 | V | IC = -10mA | ||
| Collector-Emitter Breakdown Voltage | BVCEO | -65 | V | IC = -10mA | ||
| Emitter-Base Breakdown Voltage | BVEBO | -5 | V | IE = -1µA | ||
| Collector Cutoff Current | ICBO | -15 nA | VCB = -30V | |||
| Collector-Emitter Saturation Voltage | VCE(sat) | -75 | -300 | mV | IC = -10mA, IB = -0.5mA | |
| Base-Emitter Turn-On Voltage | VBE(on) | -600 | -650 | -750 mV | IC = -2mA, VCE = -5V | |
| Base-Emitter Saturation Voltage | VBE(sat) | -700 | -850 | -1100 mV | IC = -10mA, IB = -5mA | |
| Small Signal Current Gain | hFE | 125 | 180 | 250 | IC = -2.0mA, VCE = -5V | |
| Transition Frequency | fT | 100 | 200 | MHz | VCE = -5V, IC = -10mA, f = 100MHz | |
| Package | SOT23 | |||||
| Maximum Collector Current | IC | -100 mA | ||||
| Maximum Collector-Emitter Voltage | VCEO | -65 V | ||||
| Maximum Junction Temperature | TJ | 150 °C |
Key Features
- Ideally suited for automatic insertion due to its SOT23 package.
- Complementary NPN types: BC846 – BC848, offering flexibility in circuit design.
- Totally lead-free and fully RoHS compliant, halogen- and antimony-free, making it a 'green' device.
- Qualified to JEDEC standards for high reliability and suitable for automotive applications (with specific Q-suffix parts).
- Low current (max. 100 mA) and low voltage (max. 65 V) capabilities.
- General-purpose switching and amplification applications.
- Molded plastic package with UL flammability classification rating 94V-0 and moisture sensitivity level 1 per J-STD-020.
- Matte tin plated leads, solderable per MIL-STD-202, Method 208.
Applications
- Switching applications: The BC856A is suitable for various switching circuits due to its low saturation voltage and high current gain.
- Audio Frequency (AF) Amplifier Applications: It is used in audio amplifiers where low noise and high gain are required.
- Automotive Applications: Although the standard BC856A is not automotive-qualified, there are Q-suffix variants available for automotive use, which are qualified to AEC-Q100/101/200 standards.
- Consumer Electronics: Used in devices such as satellite TV set-top boxes, portable DVD players, and other consumer electronic devices.
- Industrial and Medical Devices: Suitable for use in industrial control systems and non-life support medical devices.
Q & A
- What is the maximum collector current of the BC856A transistor?
The maximum collector current of the BC856A transistor is 100 mA.
- What is the maximum collector-emitter voltage of the BC856A transistor?
The maximum collector-emitter voltage of the BC856A transistor is 65 V.
- What package type is the BC856A transistor available in?
The BC856A transistor is available in the SOT23 (TO-236AB) package.
- Is the BC856A transistor RoHS compliant?
Yes, the BC856A transistor is totally lead-free and fully RoHS compliant.
- What are the complementary NPN types for the BC856A transistor?
The complementary NPN types for the BC856A transistor are BC846 – BC848.
- What are the typical applications of the BC856A transistor?
The BC856A transistor is typically used in switching and AF amplifier applications.
- Is the BC856A transistor suitable for automotive applications?
While the standard BC856A is not automotive-qualified, there are Q-suffix variants available that are qualified to AEC-Q100/101/200 standards.
- What is the maximum junction temperature of the BC856A transistor?
The maximum junction temperature of the BC856A transistor is 150 °C.
- What is the transition frequency of the BC856A transistor?
The transition frequency of the BC856A transistor is 100 MHz (minimum) at VCE = -5V, IC = -10mA, and f = 100MHz.
- Is the BC856A transistor halogen-free?
Yes, the BC856A transistor is halogen- and antimony-free, making it a 'green' device.
