Name: BUL128
Brand: STMicroelectronics
SKU: BUL128
Availability: InStock
Rating: 5 (84 reviews)

BUL128

For Reference Only

Part Number	BUL128
Manufacturer	STMicroelectronics
Description	TRANS NPN 400V 4A TO-220
Datasheet	BUL128 Datasheet BUL128 Specifications
Package	TO-220-3
ECAD
In Stock	6,736 piece(s)
Unit Price	Request a Quote
Lead Time	Can Ship Immediately
Estimated Delivery Time	Jun 16 - Jun 21 (Choose Expedited Shipping)
Request for Quotation

Payment Methods
Delivery Services

Part Number # BUL128 (Transistors - Bipolar (BJT) - Single) is manufactured by STMicroelectronics and distributed by Heisener. Being one of the leading electronics distributors, we carry many kinds of electronic components from some of the world’s top class manufacturers. Their quality is guaranteed by its stringent quality control to meet all required standards.

For BUL128 specifications/configurations, quotation, lead time, payment terms of further enquiries please have no hesitation to contact us. To process your RFQ, please add BUL128 with quantity into BOM. Heisener.com does NOT require any registration to request a quote of BUL128.

BUL128 Specifications

Manufacturer	STMicroelectronics
Category	Discrete Semiconductor Products - Transistors - Bipolar (BJT) - Single
Package	TO-220-3
ECAD
Series	-
Transistor Type	NPN
Current - Collector (Ic) (Max)	4A
Voltage - Collector Emitter Breakdown (Max)	400V
Vce Saturation (Max) @ Ib, Ic	500mV @ 1A, 4A
Current - Collector Cutoff (Max)	100µA
DC Current Gain (hFE) (Min) @ Ic, Vce	14 @ 2A, 5V
Power - Max	70W
Frequency - Transition	-
Operating Temperature	150°C (TJ)
Mounting Type	Through Hole
Package / Case	TO-220-3
Supplier Device Package	TO-220AB

BUL128 Datasheet

BUL128 Reviews

Mega*****abhu

March 26, 2023

★ ★ ★ ★ ★

Does what it says. As with this this type of device it is important to have it mounted so that heat can dissipate. The higher the amperage the hotter the device.

Lia *****nson

February 23, 2023

★ ★ ★ ★ ★

A well designed product that fit my custom PCB's perfectly. Easy to use. Sturdy construction. Highly recommend to all PCB builders.

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BUL128 Packaging

BUL128 FAQ

1. How to order BUL128 on Heisener?

Currently, Heisener only provide peer-to-peer order processing. While you submit the RFQ, our professional agent will contact you with the competitive prices in the global market, and our agent will prompt you to finish the order if you accept our offers.
2. How does Heisener guarantee that BUL128 is from the original manufacturer or authorized agents?

We have a professional and experienced quality control team to strictly verify and test the BUL128. All suppliers must pass our qualification reviews before they can publish their products including BUL128 on Heisener; we pay more attention to the channels and quality of BUL128 products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.
3. Are the BUL128 price and inventory displayed accurate?

The price and inventory of BUL128 fluctuates frequently and cannot be updated in time, it will be updated periodically within 24 hours. And, our quotation usually expires after 5 days.
4. What forms of payment are accepted?

Wire Transfer, PayPal, Alipay, Wechat, Credit Card, Western Union, MoneyGram, and Escrow are all acceptable.

Warm Tips: Some orders in certain payment forms may require handling fee.
5. How is the shipping arranged?

Customers can choose industry-leading freight companies, including DHL, UPS, FedEx, TNT, and Registered Mail. Shipping insurance is also available.

Once your order has been processed for shipment, our salesperson will send you an email advising you of the shipping status and tracking number.

Warm Tips: It may take up to 24 hours for the carriers to display tracking information. Usually, express delivery takes 3-5 days, and registered mail takes 25-60 days.
6. What is the process for return or replacement of BUL128?

All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the BUL128 we delivered, we will accept the replacement or return of the BUL128 only when all of the below conditions are fulfilled:

(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.

(2)We are informed of the defect described above within 90 days after the delivery of BUL128.

(3)The PartNo is unused and only in the original unpacked packaging.

Two processes to return the products:

(1)Inform us within 90 days

(2)Obtain Requesting Return Authorizations
7.How to contact us to get technical supports, such as BUL128 pin diagram, BUL128 datasheet?

If you need any after-sales service, please do not hesitate to contact us.

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BUL128 Guarantees

Service Guarantees

We guarantee 100% customer satisfaction.

Our experienced sales team and tech support team back our services to satisfy all our customers.

Quality Guarantees

We provide 90 days warranty.

If the items you received were not in perfect quality, we would be responsible for your refund or replacement, but the items must be returned in their original condition.

Global Supply Chains - Reliable and Authorized Distributor Resources

Part Number

Manufacturer

Description

Stock

BUL128DB

D# E02:0323_00206814

STMicroelectronics

Trans GP BJT NPN 400V 4A 70000mW 3-Pin(3+Tab) TO-220AB Tube

Part Number

Manufacturer

Description

Stock

BUL128D-B

D# BUL128D-B

STMicroelectronics

Trans GP BJT NPN 400V 4A 3-Pin(3+Tab) TO-220 Tube - Rail/Tube (Alt: BUL128D-B)

RoHS: Compliant

Part Number

Manufacturer

Description

Stock

BUL128D-B

D# BUL128D-B

STMicroelectronics

Trans GP BJT NPN 400V 4A 3-Pin(3+Tab) TO-220 Tube (Alt: BUL128D-B)

Part Number	Manufacturer	Description	Stock
BUL128FP	STMicroelectronics	TRANSISTOR, NPN, TO-220FP	30
BUL128D-B	STMicroelectronics	TRANS NPN 400V 4A TO-220	2848
BUL128	STMicroelectronics	TRANS NPN 400V 4A TO-220	2848
BUL128-K	STMicroelectronics	TRANS NPN 400V 4A TO-220	0

Part Number

Manufacturer

Description

Stock

BUL128DB

STMicroelectronics

RoHS: Compliant

BUL128FP

STMicroelectronics

Power Bipolar Transistor, 4A I(C), 400V V(BR)CEO, 1-Element, NPN, Silicon, TO-220AB, Plastic/Epoxy, 3 Pin

RoHS: Compliant

Part Number	Manufacturer	Description	Stock
BUL128 D# 497-12452-5-ND	STMicroelectronics	TRANS NPN 400V 4A TO-220	0
BUL128-K D# BUL128-K-ND	STMicroelectronics	TRANS NPN 400V 4A TO-220	0
BUL128FP D# BUL128FP-ND	STMicroelectronics	TRANS NPN 400V 4A TO-220FP	0
BUL128D-B D# 497-12755-5-ND	STMicroelectronics	TRANS NPN 400V 4A TO-220	3915

Part Number	Manufacturer	Description	Stock
BUL128A	STMicroelectronics	In stock shipping within 2days	12260
BUL128AA	STMicroelectronics	In stock shipping within 2days	268
BUL128D-B	STMicroelectronics	In stock shipping within 2days	12260

Part Number

Manufacturer

Description

Stock

BUL128D-B

STMicroelectronics

BUL128 Series NPN 700V 4 A High Voltage Fast-Switching Power Transistor - TO-220

RoHS: Compliant

pbFree: Yes

Part Number	Manufacturer	Description	Stock
BUL128ADATECODE0BATCHB764	STMicroelectronics	OEM/CM QUOTES ONLY \| NO BROKERS	104650
BUL128BD	STMicroelectronics	OEM/CM QUOTES ONLY \| NO BROKERS	69
BUL128A	Inchange Semiconductor Company Ltd	OEM/CM QUOTES ONLY \| NO BROKERS	39100
BUL128K	STMICROELECTRONICS	OEM/CM QUOTES ONLY \| NO BROKERS	21275
BUL128DB	STMicroelectronics	OEM/CM QUOTES ONLY \| NO BROKERS	34500
BUL128ADATECODE99BATCHB764	STMicroelectronics	OEM/CM QUOTES ONLY \| NO BROKERS	5175
BUL128	STMicroelectronics	OEM/CM QUOTES ONLY \| NO BROKERS	110624
BUL128D	Inchange Semiconductor Company Ltd	OEM/CM QUOTES ONLY \| NO BROKERS	37950
BUL12835EADATECODE99PACKAGE	STMicroelectronics	OEM/CM QUOTES ONLY \| NO BROKERS	748
BUL128FP	STMicroelectronics	OEM/CM QUOTES ONLY \| NO BROKERS	3462

Part Number

Manufacturer

Description

Stock

BUL128

STMicroelectronics

Bipolar (BJT) Transistor NPN - Through Hole TO-220AB

RoHS: Compliant

Part Number	Manufacturer	Description	Stock
BUL128A	STMicroelectronics	OEM/CM Immediate delivery	12000
BUL128DB	STMicroelectronics	OEM/CM Immediate delivery	8000
BUL128D-B	STMicroelectronics	OEM/CM Immediate delivery	12000
BUL128AA	STMicroelectronics	OEM/CM Immediate delivery	168
BUL128FP	STMicroelectronics	OEM/CM Immediate delivery	133

Part Number

Manufacturer

Description

Stock

BUL128D-B

D# 511-BUL128D-B

STMicroelectronics

Bipolar Transistors - BJT PTD IGBT & IPM

RoHS: Compliant

7685

Part Number

Manufacturer

Description

Stock

BUL128D-B

D# XSKDRABS0036668

STMicroelectronics

TO 220 AB NON/NPN TRAN 700V 4A

4300

Part Number

Manufacturer

Description

Stock

BUL128D-B

D# 41Y5365

STMicroelectronics

INDUSTRIAL & POWER CONVERSION

RoHS: Not Compliant

Min Qty: 4000

Container: Bulk

Part Number	Manufacturer	Description	Stock
BUL128D-B D# NS-BUL128D-B	STMicroelectronics	OEM/CM ONLY	2514
BUL128FP D# NS-BUL128FP	STMicroelectronics	OEM/CM ONLY	6564
BUL128-K D# NS-BUL128-K	STMicroelectronics	OEM/CM ONLY	6339

Part Number

Manufacturer

Description

Stock

BUL128D-B

D# 6868048

STMicroelectronics

STMicroelectronics BUL128D-B NPN Transistor, 4 A, 400 V, 3-Pin TO-220, PK

Min Qty: 10

Container: Package

240

Part Number	Manufacturer	Description	Stock
BUL128BD	STMicroelectronics	OEM/CM ONLY	76
BUL128A	Inchange Semiconductor Company Ltd	OEM/CM ONLY	34016
BUL128DB	STMicroelectronics	OEM/CM ONLY	30616
BUL128FP	STMicroelectronics	OEM/CM ONLY	541
BUL128	STMicroelectronics	OEM/CM ONLY	134891
BUL128D	STMicroelectronics	OEM/CM ONLY	33016

Part Number	Manufacturer	Description	Stock
BUL128A	STMicroelectronics	IN stock Immediate delivery	12015
BUL128DB	STMicroelectronics	IN stock Immediate delivery	8015
BUL128AA	STMicroelectronics	IN stock Immediate delivery	163
BUL128D-B	STMicroelectronics	IN stock Immediate delivery	12015
BUL128FP	STMicroelectronics	IN stock Immediate delivery	128

Part Number	Manufacturer	Description	Stock
BUL128DB	STMicroelectronics	shipping today	143
BUL128D-B	STMicroelectronics	shipping today	11999
BUL128A-CN	STMicroelectronics	shipping today	5001
BUL128FP	STMicroelectronics	shipping today	133
BUL128	HIMARK	shipping today	516
BUL128(PHILIPPINE)	STMicroelectronics	shipping today	25
BUL128D	STMicroelectronics	shipping today	18
BUL128A	STMicroelectronics	shipping today	4079
BUL128AA	Philips Semiconductors	shipping today	1263

Part Number

Manufacturer

Description

Stock

BUL128DB

D# 19174769

STMicroelectronics

Trans GP BJT NPN 400V 4A 70000mW 3-Pin(3+Tab) TO-220AB Tube

Part Number	Manufacturer	Description	Stock
BUL128A	STMicroelectronics	RFQ	1624
BUL128DB	STMicroelectronics	RFQ	1650
BUL128D-B	STMicroelectronics	RFQ	4823
BUL128FP	STMicroelectronics	RFQ	6423
BUL128D	STMicroelectronics	RFQ	6279

Part Number

Manufacturer

Description

Stock

BUL128A

STMicroelectronics

4490

Part Number	Manufacturer	Description	Stock
BUL128 D# 9935177	STMicroelectronics	TRANSISTOR, NPN, TO-220 RoHS: Compliant Min Qty: 1 Container: Each	0
BUL128FP D# 1084543	STMicroelectronics	TRANSISTOR, NPN, TO-220FP RoHS: Compliant Min Qty: 1 Container: Each	0
BUL128D-B D# 1084520	STMicroelectronics	TRANSISTOR, NPN, TO-220 RoHS: Compliant Min Qty: 1 Container: Each	0

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BUL128

Certified Quality

Heisener's commitment to quality has shaped our processes for sourcing, testing, shipping, and every step in between. This foundation underlies each component we sell.

ISO9001:2015, ICAS, IAF, UKAS