NST489AMT1 Equivalent & Substitute Parts

Part Overview

The NST489AMT1 is an NPN bipolar junction transistor manufactured by onsemi, rated for 30 V collector-emitter breakdown voltage and 2 A maximum collector current. This device is packaged in a 6-TSOP surface mount configuration and operates across a temperature range of -55°C to 150°C. The NST489AMT1 is classified as obsolete product status. Identification of equivalent and substitute parts is necessary to maintain design continuity and ensure component availability for new production builds and field replacements.

Key Parameters

Parameter	Value	Unit
Transistor Type	NPN	—
Current - Collector (Ic) (Max)	2	A
Voltage - Collector Emitter Breakdown (Max)	30	V
Power - Max	535	mW
Frequency - Transition	300	MHz
DC Current Gain (hFE) (Min) @ Ic, Vce	300 @ 500mA, 5V	—
Operating Temperature Range	-55 to 150	°C
Mounting Type	Surface Mount	—
Package / Case	SOT-23-6 Thin, TSOT-23-6	—
Supplier Device Package	6-TSOP	—

Substitute Part Grouping Explanation

Substitute parts for the NST489AMT1 are classified into two categories based on electrical and mechanical parameter alignment:

Direct Manufacturer Substitutes share identical electrical specifications and package configuration. These parts maintain full compatibility with the original design without circuit modification.

Parametric Equivalents meet the core electrical requirements (NPN type, 30 V breakdown voltage, 2 A collector current, 535 mW power dissipation, 300 MHz transition frequency, and 6-TSOP package) but may exhibit variations in secondary parameters such as saturation voltage characteristics or base current specifications. These parts function as direct replacements in circuit applications where the specified core parameters are the controlling design criteria.

Similar Parts share the same package and voltage rating but differ in current-handling capability or frequency response. These parts are suitable only when circuit design permits the parameter variations.

The key parameters determining substitution eligibility are:

Transistor Type: NPN
Collector Current Rating: 2 A (minimum)
Collector-Emitter Breakdown Voltage: 30 V (minimum)
Power Dissipation: 535 mW (minimum)
Transition Frequency: 300 MHz (minimum)
Package: 6-TSOP surface mount

Parameter Comparison

Part Number	Manufacturer	Ic (Max) [A]	Vce Breakdown (Max) [V]	Power (Max) [mW]	Frequency - Transition [MHz]	DC Gain (hFE) Min @ Ic, Vce	Product Status	RoHS Status	Packaging
NST489AMT1	onsemi	2	30	535	300	300 @ 500mA, 5V	Obsolete	Non-compliant	Tube
NST489AMT1G	onsemi	2	30	535	300	300 @ 500mA, 5V	Active	ROHS3 Compliant	Tape & Reel
NSS30201MR6T1G	onsemi	2	30	535	300	300 @ 500mA, 5V	Active	ROHS3 Compliant	Tape & Reel
NSVT489AMT1G	onsemi	2	30	535	300	300 @ 500mA, 5V	Active	ROHS3 Compliant	Tape & Reel
SNSS30201MR6T1G	onsemi	2	30	535	300	300 @ 500mA, 5V	Active	ROHS3 Compliant	Tape & Reel
PBSS4032ND,115	Nexperia USA Inc.	3.5	30	1000	135	250 @ 2A, 2V	Active	ROHS3 Compliant	Tape & Reel

Engineering Selection Recommendations

Primary Substitutes (Direct Replacement):

NST489AMT1G is the recommended primary substitute. This part is manufactured by onsemi under active product status and maintains identical electrical specifications to the NST489AMT1. The transition from tube packaging to tape and reel format reflects standard manufacturing practice. RoHS3 compliance status provides regulatory advantage for new designs and procurement cycles.

Secondary Substitutes (Parametric Equivalents):

NSS30201MR6T1G, NSVT489AMT1G, and SNSS30201MR6T1G are parametric equivalents manufactured by onsemi with active product status and RoHS3 compliance. These parts meet all core electrical requirements and are functionally interchangeable in circuit applications. All three maintain the 6-TSOP package configuration and operate within the specified temperature range.

Alternative Part (Higher Current Rating):

PBSS4032ND,115 manufactured by Nexperia USA Inc. is classified as a similar part rather than a direct substitute. This device provides higher collector current capability (3.5 A versus 2 A) and increased power dissipation (1 W versus 535 mW), making it suitable for applications requiring enhanced current handling. However, the transition frequency is reduced to 135 MHz, and DC current gain characteristics differ. This part is qualified to AEC-Q100 automotive standards. Selection of this part requires circuit design verification to confirm that the reduced frequency response does not impact system performance.

All substitute parts listed maintain the 30 V collector-emitter breakdown voltage rating and 6-TSOP package configuration required for mechanical and electrical compatibility.

Frequently Asked Questions (FAQ)

Q: Can NST489AMT1G be used as a direct replacement for NST489AMT1?

A: Yes. NST489AMT1G is a direct substitute manufactured by onsemi with identical electrical specifications. The primary difference is packaging format (tape and reel versus tube) and RoHS3 compliance status. No circuit modifications are required.

Q: What is the difference between NST489AMT1G and NSS30201MR6T1G?

A: Both parts meet the core electrical requirements for the NST489AMT1 application. NSS30201MR6T1G is a parametric equivalent with the same collector current, voltage rating, power dissipation, and transition frequency. The base product number differs, indicating a different device family within the onsemi portfolio. Both are active products with RoHS3 compliance.

Q: Can PBSS4032ND,115 replace NST489AMT1 in all applications?

A: PBSS4032ND,115 is a similar part with higher current and power ratings but reduced transition frequency (135 MHz versus 300 MHz). This part is suitable only for applications where the reduced frequency response does not impact circuit performance. Circuit design verification is required before substitution.

Q: Why is NST489AMT1 listed as obsolete?

A: NST489AMT1 is classified as obsolete product status. Active alternatives from onsemi (NST489AMT1G, NSS30201MR6T1G, NSVT489AMT1G, SNSS30201MR6T1G) provide equivalent or superior specifications with current manufacturing support and RoHS3 compliance.

Q: Are all substitute parts available in the same 6-TSOP package?

A: Yes. All substitute parts listed are packaged in the 6-TSOP surface mount configuration, ensuring mechanical compatibility with existing PCB layouts and assembly processes.

Q: What is the significance of RoHS3 compliance for substitute selection?

A: RoHS3 compliance indicates conformance to current environmental and hazardous substance restrictions. NST489AMT1 is RoHS non-compliant, while all active substitute parts are RoHS3 compliant. For new designs and procurement, RoHS3 compliant parts are required to meet regulatory requirements in most markets.

Q: Can multiple substitute parts be used interchangeably within the same design?

A: NST489AMT1G, NSS30201MR6T1G, NSVT489AMT1G, and SNSS30201MR6T1G are parametric equivalents and can be used interchangeably where the core electrical specifications (2 A collector current, 30 V breakdown voltage, 535 mW power, 300 MHz transition frequency) satisfy circuit requirements. PBSS4032ND,115 requires circuit design verification due to parameter differences.

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