2SD21850RL The 2SD21850RL is an NPN epitaxial planar transistor from Panasonic, designed for low-frequency output amplification. It features a collector-emitter voltage of 50V, collector current of 3A, and low saturation voltage.
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2SD21850RL

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Mfr Name: Panasonic Electronic Components
Panasonic Electronic Components
The 2SD21850RL is an NPN epitaxial planar transistor from Panasonic, designed for low-frequency output amplification. It features a collector-emitter voltage of 50V, collector current of 3A, and low saturation voltage.
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2SD21850RL Available from 1 distributor

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2SD21850RL Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Current
DC Current Gain (hFE) (Min) @ Ic, Vce
Frequency
Mounting Type
Operating Temperature
Power
Supplier Device Package
Transistor Type
Vce Saturation (Max) @ Ib, Ic
Voltage

2SD21850RL Description

Short technical summary and product information.

The 2SD21850RL is a silicon NPN epitaxial planar transistor manufactured by Panasonic, specifically designed for low-frequency output amplification. It is the complementary type to the 2SB1440. The device offers a low collector-emitter saturation voltage, making it efficient for amplifier stages.

 

Key electrical ratings include a maximum collector-emitter voltage (Vceo) of 50V, a continuous collector current (Ic) of 3A, and a peak collector current (Icp) of 4A. The DC current gain (hFE) is typically 120 to 340 at 200mA/2V, with a minimum of 80 at 1A/2V. The collector-emitter saturation voltage is typically 0.15V (max 0.30V) at 1A/50mA. The transition frequency (fT) is 120MHz, and the collector output capacitance (Cob) is 20pF typical.

 

The transistor is housed in a MiniP3-F1 surface mount package (TO-243AA) with three leads: base, collector, and emitter. It is rated for a maximum power dissipation of 1W and a junction temperature of up to 150°C. The storage temperature range is -55°C to +150°C. The device is RoHS3 compliant as per the datasheet.

 

Typical applications include low-frequency output amplification, driver stages, and general-purpose switching. The surface mount package enables compact design and automated assembly.

2SD21850RL Quick Information

Product Type: NPN Bipolar Transistor
Canonical Name: 2SD21850RL NPN Bipolar Transistor
Subcategory: NPN Transistor

2SD21850RL Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected
Lead Free: Yes

2SD21850RL Features

  • NPN epitaxial planar transistor for low-frequency amplification.
  • Low collector-emitter saturation voltage of 0.15V typical.
  • Rated for 50V collector-emitter voltage and 3A current.
  • MiniP3-F1 surface mount package for compact designs.
  • RoHS3 compliant with verified datasheet documentation.

2SD21850RL Applications

  • Used in low-frequency output amplifier circuits.
  • Ideal for general-purpose switching applications.
  • Suitable for driver stages in audio equipment.

2SD21850RL FAQs

7 frequently asked questions generated from this part’s specifications.
What is the operating voltage of this transistor?

The maximum collector-emitter voltage (Vceo) is 50V, and the maximum collector-base voltage (Vcbo) is also 50V.

What package is the 2SD21850RL available in?

It is available in a TO-243AA surface mount package, also known as MiniP3-F1.

What is the operating temperature range?

The junction temperature (Tj) can reach up to 150°C, and the storage temperature range is -55°C to +150°C.

Is the 2SD21850RL RoHS compliant?

Yes, it is RoHS3 compliant as stated in the datasheet (EU 2002/95/EC).

What is the collector current rating?

The maximum continuous collector current is 3A, with a peak collector current of 4A.

What is the DC current gain (hFE) at typical conditions?

At Vce=2V and Ic=200mA, the hFE is typically 120 to 340. At Ic=1A, the minimum hFE is 80.

What is the collector-emitter saturation voltage?

The typical saturation voltage is 0.15V, with a maximum of 0.30V at Ib=50mA and Ic=1A.

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