NB1203E

GLOBAL BRAND CROSS-REFERENCE

STMicroelectronics

TRANS NPN 550V 5A TO-220

BUL1203E

High-reliability design
Long-term stable supply
RoHS compliant

TRANS NPN 550V 5A TO-220

1. PRODUCT POSITIONING

NB1203E is a product identity corresponding to the reference product BUL1203E. This document presents the available product specifications, mechanical/package information and compatibility summary for engineering and procurement reference.

This document is a product information. Compatibility conclusions should be read together with the applicable Cross-Reference Identification (CID) rule, package/pin verification and engineering review record.

2. TECHNICAL SPECIFICATION COMPARISON (core parameters)
Parameter	STMicroelectronics BUL1203E	ChipNobo NB1203E	Match
Mounting Type	Through Hole	Through Hole	✓
Part Status	Active	Active	✓
Package / Case	TO-220-3	TO-220-3	✓
Transistor Type	NPN	NPN	✓
Supplier Device Package	TO-220	TO-220	✓
Power - Max	100 W	100 W	✓
Current - Collector (Ic) (Max)	5 A	5 A	✓
Current - Collector Cutoff (Max)	100µA	100µA	✓
Voltage - Collector Emitter Breakdown (Max)	550 V	550 V	✓
Vce Saturation (Max) @ Ib, Ic	1.5V @ 1A, 3A	1.5V @ 1A, 3A	✓
DC Current Gain (hFE) (Min) @ Ic, Vce	9 @ 2A, 5V	9 @ 2A, 5V	✓
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	✓
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	✓

3. SUPPLY & LIFECYCLE
ChipNobo Number	NB1203E
Lifecycle status	Active
NRND	No
EOL	No
PCN monitor	No
Last buy date	No Deadline
Alternate availability	Sufficient

CHIPNOBO

Semiconductor Replacement Engineering & Supply Continuity

Single Bipolar Transistors

PRODUCT DATASHEET

4. APPLICATION AREAS
Battery Management System (BMS)	On-Board Charger (OBC)
EV DC/DC Converter	ADAS Camera System
Industrial Robot	Servo Motor Drive
PLC Controller	Semiconductor Equipment
Solar Inverter	Power Supply System
5G Base Station	Smart Speaker

5. ENGINEERING & COMMERCIAL NOTES

The ChipNobo MPN is the public product identity used by ChipNobo for this replacement reference.
The original manufacturer and original MPN are retained as reference identity information.
Product PDF data are intended for engineering, procurement and supply-continuity reference.
Current price, MOQ, lead time, available supply source and regional availability should be confirmed through RFQ.
For customer-specific qualification, PCB footprint approval, reliability requirements or design-in approval, the customer should perform the applicable validation process.

Document purpose: Product Information / Replacement Reference · Generated from the product data supplied for NB1203E.

Important Notice & Disclaimer

Document ID: 【CN-DATA-NB1203E】 Revision: 1.0 Status: Released

The information provided by ChipNobo is intended solely for engineering evaluation, product selection, procurement, and supply continuity reference purposes. Product specifications, lifecycle status, availability, and other information are subject to change without notice. Customers should always verify relevant information against the latest official documentation published by the respective manufacturers.

Cross-reference and replacement recommendations are provided for engineering reference purposes only. They do not constitute a guarantee of pin-to-pin compatibility, interchangeability, or suitability for any particular application. Customers are responsible for conducting all necessary engineering reviews, testing, and qualification prior to product selection and use.

Manufacturer names, trademarks, and part numbers are referenced solely for product identification purposes. Their use does not imply any affiliation with, endorsement by, or authorization from the respective manufacturers, unless expressly stated otherwise.

To the maximum extent permitted by applicable law, ChipNobo makes no warranties, express or implied, regarding the completeness, accuracy, or suitability of the information provided and shall not be liable for any loss or damage arising from its use or reliance, except as otherwise expressly agreed in writing and subject to applicable law.