2PD602AR,115 NPN Bipolar Junction Transistor Equivalent & Substitute Parts

Part Overview

The 2PD602AR,115 is an NPN bipolar junction transistor manufactured by NXP USA Inc., designed for surface mount applications in the TO-236-3 (SC-59, SOT-23-3) package. This device operates at a maximum collector voltage of 50V with a collector current rating of 500mA and a maximum power dissipation of 250mW. The transistor features a transition frequency of 160MHz and is suitable for general-purpose switching and amplification circuits.

The 2PD602AR,115 is classified as an obsolete product. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for legacy systems or redesign initiatives.

Key Parameters

Parameter	Value	Unit
Transistor Type	NPN	—
Collector-Emitter Breakdown Voltage (Max)	50	V
Collector Current (Max)	500	mA
Power Dissipation (Max)	250	mW
Transition Frequency	160	MHz
DC Current Gain (hFE Min) @ Ic, Vce	120 @ 150mA, 10V	—
Vce Saturation (Max) @ Ib, Ic	600mV @ 30mA, 300mA	—
Collector Cutoff Current (Max)	10	nA
Operating Temperature (Max)	150	°C
Package / Case	TO-236-3, SC-59, SOT-23-3	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the 2PD602AR,115 is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

Transistor Type: NPN
Collector-Emitter Breakdown Voltage: 50V or higher
Collector Current Rating: 500mA or higher
Power Dissipation: 250mW or higher
Package / Case: TO-236-3, SC-59, or SOT-23-3 (surface mount)
Mounting Type: Surface Mount
RoHS Compliance: ROHS3 Compliant

Secondary Compatibility Parameters:

DC Current Gain (hFE): Minimum 120 @ specified test conditions
Vce Saturation: 600mV or lower @ specified test conditions
Collector Cutoff Current: 100nA or lower
Operating Temperature: 150°C or higher

Substitute parts are grouped into three categories based on their relationship to the main part specifications:

Direct Equivalents — Parts meeting or exceeding all primary criteria with identical or superior electrical performance
Manufacturer Recommended Substitutes — Parts designated by manufacturers as suitable alternatives with comparable functionality
Parametric Equivalents — Parts meeting all primary criteria with automotive-grade qualification or enhanced specifications

Parameter Comparison

Part Number	Manufacturer	Vce(BR) Max (V)	Ic Max (mA)	Power Max (mW)	fT (MHz)	hFE Min @ Ic, Vce	Package	Status
2PD602AR,115	NXP USA Inc.	50	500	250	160	120 @ 150mA, 10V	SOT-23-3	Obsolete
MSD602-RT1G	onsemi	50	500	200	—	SC-59	Active
SMSD602-RT1G	onsemi	50	500	200	—	SC-59	Active
BC817-40LT1G	onsemi	45	500	300	100	SOT-23-3	Active
BC817K40E6327HTSA1	Infineon Technologies	45	500	500	170	250 @ 100mA, 1V	PG-SOT23	Last Time Buy
FMMT413TD	Diodes Incorporated	50	100	330	150	50 @ 10mA, 10V	SOT-23-3	Active
FMMT619TA	Diodes Incorporated	50	2000	625	165	200 @ 1A, 2V	SOT-23-3	Active
MMBT6428LT1G	onsemi	50	200	225	700	250 @ 100µA, 5V	SOT-23-3	Active
NSVBC817-16LT1G	onsemi	45	500	225	100	SOT-23-3	Active
2PD602ARL,215	Nexperia USA Inc.	50	500	250	160	120 @ 150mA, 10V	TO-236AB	Active
2PD602ARL,235	Nexperia USA Inc.	50	500	250	160	120 @ 150mA, 10V	TO-236AB	Active

Engineering Selection Recommendations

Parametric Equivalents (Recommended for Direct Replacement):

The 2PD602ARL,215 and 2PD602ARL,235 manufactured by Nexperia USA Inc. are parametric equivalents of the 2PD602AR,115. Both parts maintain identical electrical specifications including 50V breakdown voltage, 500mA collector current, 250mW power dissipation, and 160MHz transition frequency. Both are AEC-Q101 qualified automotive-grade devices with active product status, ensuring long-term supply availability. These parts are suitable for direct substitution in applications requiring the original specifications.

Active Manufacturer Alternatives:

The FMMT619TA (Diodes Incorporated) meets or exceeds all primary substitution criteria with superior collector current capability (2A), higher power dissipation (625mW), and comparable transition frequency (165MHz). This part is suitable for applications requiring higher current handling or thermal margin.

The BC817-40LT1G (onsemi) provides 500mA collector current and 300mW power dissipation in an active product status. Although the breakdown voltage is rated at 45V (5V lower than the original), this part is suitable for applications where the 50V specification is not a critical design requirement.

The MMBT6428LT1G (onsemi) offers exceptional transition frequency performance (700MHz) with 50V breakdown voltage and 200mA collector current. This part is appropriate for high-frequency switching applications where the original 500mA current rating is not required.

Parts with Reduced Current Capability:

The FMMT413TD (Diodes Incorporated) is rated for 100mA maximum collector current, which is below the 500mA specification of the original part. This device is suitable only for applications where collector current does not exceed 100mA.

The MMBT6428LT1G is rated for 200mA maximum collector current. This device is suitable only for applications where collector current does not exceed 200mA.

Product Status Considerations:

The BC817K40E6327HTSA1 (Infineon Technologies) carries a Last Time Buy status, indicating limited future availability. While this part meets substitution criteria, it is not recommended for new designs or long-term production requirements.

The MSD602-RT1G and SMSD602-RT1G (onsemi) are active products with 50V breakdown voltage and 500mA collector current. However, power dissipation is rated at 200mW, which is 50mW below the original specification. These parts are suitable for applications where thermal margin is not critical.

Frequently Asked Questions (FAQ)

Q1: Can the 2PD602ARL,215 or 2PD602ARL,235 be used as direct replacements for the 2PD602AR,115?

A: Yes. Both Nexperia parts are parametric equivalents with identical electrical specifications (50V, 500mA, 250mW, 160MHz) and the same package family (TO-236-3/SOT-23-3). The primary difference is product status (active vs. obsolete) and automotive qualification (AEC-Q101). These parts are suitable for direct substitution without circuit modification.

Q2: What is the difference between the onsemi MSD602-RT1G and SMSD602-RT1G?

A: Both parts share identical electrical specifications (50V, 500mA, 200mW) and package designation (SC-59). The primary difference is the base product number designation (MSD602 vs. SMSD602). Both are active products. The 50mW reduction in power dissipation compared to the original part should be evaluated against thermal requirements in the target application.

Q3: Why is the BC817-40LT1G rated at 45V instead of 50V?

A: The BC817-40LT1G is a different device family with a lower breakdown voltage specification. While this part meets the 500mA collector current and provides superior power dissipation (300mW), the 45V rating represents a 10% reduction in voltage margin. This part is suitable only for applications where the operating voltage does not approach 45V.

Q4: Can the FMMT619TA be used in place of the 2PD602AR,115?

A: The FMMT619TA meets all primary substitution criteria with superior specifications: 50V breakdown voltage, 2A collector current (4x higher), 625mW power dissipation (2.5x higher), and 165MHz transition frequency. This part is suitable for direct substitution and provides additional design margin for current and thermal performance.

Q5: Is the MMBT6428LT1G suitable for all applications using the 2PD602AR,115?

A: No. The MMBT6428LT1G is rated for 200mA maximum collector current, which is 60% below the original 500mA specification. This part is suitable only for applications where collector current does not exceed 200mA. However, it offers exceptional transition frequency performance (700MHz) for high-speed switching applications within this current range.

Q6: What does "Last Time Buy" status mean for the BC817K40E6327HTSA1?

A: Last Time Buy status indicates that the manufacturer has announced the end of production for this part. Existing inventory may be available for a limited time, but future availability is not guaranteed. This part is not recommended for new designs or applications requiring long-term supply continuity.

Q7: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed in this document are RoHS3 compliant and have a Moisture Sensitivity Level of 1 (Unlimited), matching the compliance profile of the original 2PD602AR,115.

Q8: What is the significance of the package designation differences (SOT-23-3 vs. SC-59 vs. TO-236AB)?

A: SOT-23-3, SC-59, and TO-236-3 are equivalent package designations for the same physical form factor used in surface mount applications. TO-236AB is an alternative designation for the same package family. All substitute parts listed use compatible package geometries suitable for the same PCB footprint as the original part.

Q9: Which substitute part provides the best overall compatibility with the 2PD602AR,115?

A: The 2PD602ARL,215 and 2PD602ARL,235 (Nexperia) provide the best overall compatibility, as they are parametric equivalents with identical electrical specifications and active product status. These parts require no circuit modification and provide long-term supply assurance through automotive-grade qualification.

Q10: Can multiple substitute parts be used interchangeably in the same circuit?

A: Substitution compatibility depends on the specific application requirements. Parts with identical or superior electrical specifications (such as FMMT619TA) can be used interchangeably. Parts with reduced current capability (FMMT413TD, MMBT6428LT1G) or lower breakdown voltage (BC817-40LT1G) require application-specific evaluation to ensure they do not exceed their rated limits under circuit operating conditions.

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