ST BUL128D-B

Manufacturer No:

BUL128D-B

Manufacturer:

ST

Package:

TO-220-3

Description:

NPN 150°C TJ 250?A 1 Elements 3 Terminations SILICON NPN TO-220-3 Tube Through Hole

Quantity:

In Stock :1028

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Shipping & Availability

Fast worldwide shipping via DHL, FedEx, UPS, and EMS.

Shipped from：HK Warehouse

Expected Shipping：Sun, May 31 - Mon, Jun 1, 2026

Lead Time：Inquire about availability

Date Code：Within 2 Years

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User Guide

Aichiplink operates certified in-house inspection and testing facilities to ensure all electronic components meet internationally recognized quality and compliance standards. Our quality management system is verified through ISO 9001 certification and industry-standard inspection procedures.

PURCHASE

Please verify all part numbers, quantities, and packaging preferences before placing your order. If substitutions are acceptable, please indicate this clearly. For time-sensitive projects, confirm estimated delivery dates and stock availability in advance. Once submitted, changes or cancellations may not be possible, especially for items marked as non-cancellable/non-returnable (NCNR). For international shipments, please ensure all import documentation is complete and accurate to avoid delays.

MEANS OF PAYMENT

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RFQ (REQUEST FOR QUOTATIONS)

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Provide target prices and acceptable alternatives, if any, to speed up the quotation process.

IMPORTANT NOTICE

Quotations are subject to stock availability and may vary with market conditions. Prices and lead times are not guaranteed until a purchase order is confirmed. Ensure your contact details are correct to avoid delays in response.

Step1：Prepare product

Step2：Desiccant Protection

Step3：Vacuum Packaging

Step4：Individual Package

Step5：Anti-collision Filling

Step6：Packaging Box

SHIPPING COST

1. Shipping starts at $40, but some countries will exceed $40. For example (South Africa, Brazil, India, Pakistan, Israel, etc.).
2. Some specific products need to reach the minimum order quantity.
3. It may cost additional remote fees for delivery if you are in a remote area.

SHIPPING METHOD

Currently, our products are shipped through DHL, FedEx, SF, and UPS.

DELIVERY TIME

1. Once the goods are shipped, estimated delivery time depends on the shipping methods you chose: FedEx International, 5-7 business days.
2. For in-stock parts, orders normally could be shipped out within 1-2days.

BUL128D-B Information

ST BUL128D-B technical specifications, attributes, parameters and parts with similar specifications to ST BUL128D-B.

Type
Parameter

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-220-3

Number of Pins
3

Transistor Element Material
SILICON

Operating Temperature
150°C TJ

Packaging
Tube

Type
Parameter

JESD-609 Code
e3

Part Status
Active

Moisture Sensitivity Level (MSL)
1 (Unlimited)

Number of Terminations
3

ECCN Code
EAR99

Subcategory
Other Transistors

Max Power Dissipation
70W

Base Part Number
BUL128

Pin Count
3

Number of Elements
1

Download datasheets and manufacturer documentation for ST BUL128D-B.

Datasheets:

stmicroelectronics-bul128db-datasheets-1945.pdf

stmicroelectronics-bul128db-datasheets-9029.pdf

stmicroelectronics-bul128db-datasheets-9030.pdf

BUL128D-B Overview

This device has a DC current gain of 12 @ 2A 5V, which is the ratio between the base current and the collector current.This design offers maximum flexibility with a collector emitter saturation voltage of 500mV.A VCE saturation (Max) of 500mV @ 1A, 4A means Ic has reached its maximum value(saturated).A high level of efficiency can be achieved if the base voltage of the emitter remains at 9V.A maximum collector current of 4A volts is possible.

BUL128D-B Features

the DC current gain for this device is 12 @ 2A 5V
a collector emitter saturation voltage of 500mV
the vce saturation(Max) is 500mV @ 1A, 4A
the emitter base voltage is kept at 9V