Mfr Part #:

BF870

Mfr Name: Siemens

The Siemens BF870 is a PNP high-voltage transistor designed for applications like color television receivers. It offers a collector-emitter voltage of 250V and a peak collector current of 100mA.

✓ Total Stock: 9 pcs

$ Price Range: $0.45

BF870 Available from 1 distributor

✓ Authorised

✓ Non-Authorised

Distributor		Stock	Pricing	MOQ	PKG	Lead Time	Date Code	On Order Quantity	On Order Delivery
Partservice ✓ Non-Authorised Inventory information	9 pcs On Request	9 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request

BF870 Specifications Quick View

Most important parameters for selection – full specs in datasheet.

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Category	New Products
Manufacturer Name	Siemens
Junction Temperature	150 °C
Mounting Type	Through Hole
Power Dissipation	5W
Storage Temperature	-65 to +150 °C

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BF870 Description

Short technical summary and product information.

The BF870 from Siemens is a PNP bipolar junction transistor (BJT) designed for high-voltage applications. It is housed in a TO-202 plastic package and features a low feedback capacitance.

Key electrical specifications include a collector-emitter voltage (VCEO) of 250V and a peak collector current (ICM) of 100mA. The DC current gain (hFE) is a minimum of 50 under specific test conditions. The transistor also exhibits a feedback capacitance (Cre) of up to 2.2 pF and a transition frequency (fT) of at least 60 MHz.

Thermal characteristics are important for this device, with a total power dissipation (Ptot) rated at 5W when measured at the mounting base temperature (Tmb) of 25°C, and 1.6W when measured at an ambient temperature (Tamb) of 25°C. The junction temperature (Tj) can reach up to 150°C, with storage temperatures ranging from -65°C to +150°C.

This transistor is suitable for use in class-B video output stages of color television receivers. Its TO-202 package is designed for through-hole mounting.

BF870 Quick Information

Product Type: PNP high-voltage transistor

Canonical Name: PNP high-voltage transistor BF870

Subcategory: Bipolar (BJT) - Single

BF870 Compliance

RoHS Status: RoHS Compliant

Moisture Sensitivity Level (MSL): 1 Unlimited

REACH Status: REACH Unaffected

BF870 Estimated Pricing

Qty	Low	High
1+	$0.45	$0.45

Estimated market price range - modelled values for guidance only, not live distributor offers.

BF870 Features

PNP high-voltage transistor
250V collector-emitter voltage
100mA peak collector current
Low feedback capacitance
TO-202 package for through-hole mounting

BF870 Applications

Suitable for high-voltage switching applications.
Used in class-B audio and video output stages.
Ideal for television receiver circuits.
Applicable in power regulation and control circuits.

BF870 FAQs

7 frequently asked questions generated from this part’s specifications.

What is the maximum collector-emitter voltage for the BF870?

The maximum collector-emitter voltage (VCEO) for the BF870 is 250V.

What is the peak collector current of the BF870 transistor?

The peak collector current (ICM) for the BF870 is 100mA.

What is the total power dissipation of the BF870 at the mounting base?

The total power dissipation (Ptot) for the BF870 at Tmb ≤ 25 °C is 5W.

What is the DC current gain (hFE) of the BF870?

The DC current gain (hFE) of the BF870 is a minimum of 50 under conditions of IC = -25 mA and VCE = -20 V at 25 °C.

What is the feedback capacitance of the BF870 transistor?

The feedback capacitance (Cre) of the BF870 is a maximum of 2.2 pF.

What is the transition frequency (fT) for the BF870?

The transition frequency (fT) for the BF870 is a minimum of 60 MHz.

What type of package is the BF870 in?

The BF870 is supplied in a TO-202 plastic package.