NJD2873RL Equivalent & Substitute Parts

Part Overview

The NJD2873RL is an NPN bipolar junction transistor manufactured by onsemi, rated for 50V collector-emitter breakdown voltage and 2A maximum collector current. The device is packaged in TO-252-3 DPAK (2 Leads + Tab) surface mount configuration and operates across a temperature range of -65°C to 175°C. The NJD2873RL is classified as obsolete, making identification of equivalent and substitute parts essential for ongoing design support and procurement continuity.

Key Parameters

Parameter	Value	Unit
Transistor Type	NPN	—
Voltage - Collector Emitter Breakdown (Max)	50	V
Current - Collector (Ic) (Max)	2	A
Vce Saturation (Max) @ Ib, Ic	300mV @ 50mA, 1A	—
Current - Collector Cutoff (Max)	100nA	ICBO
DC Current Gain (hFE) (Min) @ Ic, Vce	120 @ 500mA, 2V	—
Power - Max	1.68	W
Frequency - Transition	65	MHz
Operating Temperature	-65 to 175	°C (TJ)
Package / Case	TO-252-3, DPAK (2 Leads + Tab), SC-63	—
Mounting Type	Surface Mount	—

Substitute Part Grouping Explanation

Substitute parts for the NJD2873RL are classified into two categories based on electrical and mechanical parameter alignment:

Parametric Equivalents share identical electrical specifications and package configuration. These parts maintain the same collector current rating (2A), collector-emitter breakdown voltage (50V), saturation voltage characteristics, DC current gain, transition frequency (65MHz), power dissipation (1.68W), and operating temperature range (-65°C to 175°C). All parametric equivalents use the TO-252-3 DPAK surface mount package. Differences exist only in product status, RoHS compliance level, packaging format (Tape & Reel vs. Cut Tape), and automotive qualification where applicable.

Similar Parts share the same transistor type (NPN) and collector-emitter breakdown voltage (50V) but differ in one or more critical electrical parameters. The PBSS4350Z,135 exhibits higher maximum collector current (3A vs. 2A), higher power dissipation (2W vs. 1.68W), higher transition frequency (100MHz vs. 65MHz), and uses a different package configuration (SOT-223 vs. DPAK). These differences restrict direct substitution to applications where the higher ratings do not create design conflicts.

Parameter Comparison

Parameter	NJD2873RL	NJD2873T4G	NJVNJD2873T4G	NJVNJD2873T4G-VF01	S1JVNJD2873T4G	PBSS4350Z,135
Manufacturer	onsemi	onsemi	onsemi	onsemi	onsemi	Nexperia USA Inc.
Transistor Type	NPN	NPN	NPN	NPN	NPN	NPN
Voltage - Collector Emitter Breakdown (Max)	50V	50V	50V	50V	50V	50V
Current - Collector (Ic) (Max)	2A	2A	2A	2A	2A	3A
Vce Saturation (Max) @ Ib, Ic	300mV @ 50mA, 1A	300mV @ 50mA, 1A	300mV @ 50mA, 1A	300mV @ 50mA, 1A	300mV @ 50mA, 1A	290mV @ 200mA, 2A
Current - Collector Cutoff (Max)	100nA	100nA	100nA	100nA	100nA	100nA
DC Current Gain (hFE) (Min) @ Ic, Vce	120 @ 500mA, 2V	120 @ 500mA, 2V	120 @ 500mA, 2V	120 @ 500mA, 2V	120 @ 500mA, 2V	100 @ 2A, 2V
Power - Max	1.68W	1.68W	1.68W	1.68W	1.68W	2W
Frequency - Transition	65MHz	65MHz	65MHz	65MHz	65MHz	100MHz
Operating Temperature	-65 to 175°C	-65 to 175°C	-65 to 175°C	-65 to 175°C	-65 to 175°C	150°C (TJ)
Package / Case	TO-252-3 DPAK	TO-252-3 DPAK	TO-252-3 DPAK	TO-252-3 DPAK	TO-252-3 DPAK	TO-261-4 SOT-223
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Product Status	Obsolete	Active	Active	Obsolete	Active	Active
RoHS Status	Non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Automotive Grade	—	—	Yes (AEC-Q101)	—	—	Yes (AEC-Q100)

Engineering Selection Recommendations

For Direct Replacement (Parametric Equivalents):

The NJD2873T4G is the primary active equivalent. It maintains all electrical specifications of the NJD2873RL while offering ROHS3 compliance and active product status. The NJD2873T4G is supplied in Tape & Reel packaging format, suitable for high-volume manufacturing environments.

The NJVNJD2873T4G provides an automotive-qualified alternative with AEC-Q101 certification. This part is appropriate for applications requiring automotive-grade components and maintains identical electrical performance. It is supplied in Tape & Reel format and carries active product status.

The S1JVNJD2873T4G offers another active equivalent with ROHS3 compliance and identical electrical specifications. This variant is available in standard packaging and supports applications without specific automotive requirements.

The NJVNJD2873T4G-VF01 is an obsolete variant supplied in Cut Tape format. While electrically equivalent, its obsolete status and limited inventory (1173 pcs) make it a secondary choice for new designs.

For Applications Requiring Higher Performance:

The PBSS4350Z,135 from Nexperia USA Inc. is classified as a similar part rather than a direct equivalent due to differences in package configuration (SOT-223 vs. DPAK), maximum collector current (3A vs. 2A), power dissipation (2W vs. 1.68W), and transition frequency (100MHz vs. 65MHz). This part is suitable only for applications where the higher current and frequency ratings do not create thermal or layout conflicts, and where the SOT-223 package is acceptable. The PBSS4350Z,135 carries automotive qualification (AEC-Q100) and ROHS3 compliance.

Frequently Asked Questions (FAQ)

Q: Can NJD2873T4G be used as a direct replacement for NJD2873RL?

A: Yes. The NJD2873T4G is a parametric equivalent with identical electrical specifications: 50V collector-emitter breakdown voltage, 2A maximum collector current, 65MHz transition frequency, 1.68W power dissipation, and -65°C to 175°C operating temperature range. Both use the TO-252-3 DPAK package. The primary difference is product status (NJD2873T4G is active) and RoHS compliance (NJD2873T4G is ROHS3 compliant).

Q: What is the difference between NJD2873T4G and NJVNJD2873T4G?

A: Both parts are parametric equivalents with identical electrical specifications and DPAK packaging. The NJVNJD2873T4G carries automotive qualification (AEC-Q101 certification), making it suitable for automotive applications. The NJD2873T4G is intended for general industrial applications. Both are active products with ROHS3 compliance.

Q: Can PBSS4350Z,135 replace NJD2873RL?

A: PBSS4350Z,135 is a similar part, not a direct equivalent. While both are NPN transistors with 50V collector-emitter breakdown voltage, the PBSS4350Z,135 differs in maximum collector current (3A vs. 2A), power dissipation (2W vs. 1.68W), transition frequency (100MHz vs. 65MHz), and package type (SOT-223 vs. DPAK). Substitution is possible only if the application tolerates these higher ratings and the SOT-223 package footprint is compatible with the circuit board layout.

Q: Why is the NJD2873RL marked as obsolete?

A: The NJD2873RL is classified as obsolete by the manufacturer. Active equivalents such as NJD2873T4G and NJVNJD2873T4G are available for new designs and ongoing production. Existing inventory of NJD2873RL (661 pcs) remains available, but long-term sourcing should transition to active alternatives.

Q: What packaging formats are available for equivalent parts?

A: Parametric equivalents are supplied in Tape & Reel (TR) format for high-volume applications (NJD2873T4G, NJVNJD2873T4G, S1JVNJD2873T4G) or Cut Tape (CT) format for lower-volume requirements (NJVNJD2873T4G-VF01). All maintain the TO-252-3 DPAK surface mount package configuration. The PBSS4350Z,135 uses SOT-223 packaging and is supplied in Tape & Reel format.

Q: Are all substitute parts RoHS compliant?

A: The NJD2873RL is RoHS non-compliant. All active parametric equivalents (NJD2873T4G, NJVNJD2873T4G, S1JVNJD2873T4G) and the similar part PBSS4350Z,135 are ROHS3 compliant. The obsolete variant NJVNJD2873T4G-VF01 is also ROHS3 compliant.

Q: Which substitute part should be selected for automotive applications?

A: The NJVNJD2873T4G is the recommended choice for automotive applications. It carries AEC-Q101 qualification, maintains all electrical specifications of the NJD2873RL, and is supplied in Tape & Reel format with active product status and ROHS3 compliance. The PBSS4350Z,135 is an alternative if higher current capacity (3A) and transition frequency (100MHz) are required; it carries AEC-Q100 qualification and SOT-223 packaging.

Q: What is the inventory status of substitute parts?

A: NJD2873T4G has the highest inventory (35,300 pcs), followed by S1JVNJD2873T4G (3,800 pcs), NJVNJD2873T4G (3,600 pcs), PBSS4350Z,135 (15,073 pcs), and NJVNJD2873T4G-VF01 (1,173 pcs). The original NJD2873RL has 661 pcs available.

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