2PD601AR,115 NPN Bipolar Junction Transistor Equivalent & Substitute Parts

Part Overview

The 2PD601AR,115 is an NPN bipolar junction transistor manufactured by NXP USA Inc., designed for surface mount applications in the TO-236-3 (SOT-23-3) package. This device operates at 50V collector-emitter breakdown voltage with a maximum collector current of 100 mA and 250 mW power dissipation. The part is classified as Obsolete, necessitating identification of active equivalent and substitute components for new designs and ongoing production requirements. Equivalent parts must maintain electrical compatibility within the specified parameter ranges while offering improved availability and product status.

Key Parameters

Parameter	Value	Unit
Transistor Type	NPN	—
Voltage - Collector Emitter Breakdown (Max)	50	V
Current - Collector (Ic) (Max)	100	mA
Vce Saturation (Max) @ Ib, Ic	250 mV @ 10 mA, 100 mA	—
DC Current Gain (hFE) (Min) @ Ic, Vce	210 @ 2 mA, 10 V	—
Power - Max	250	mW
Frequency - Transition	100	MHz
Operating Temperature (TJ)	150	°C
Mounting Type	Surface Mount	—
Package / Case	TO-236-3, SC-59, SOT-23-3	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the 2PD601AR,115 is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

Transistor Type: NPN (mandatory)
Voltage - Collector Emitter Breakdown (Max): ≥ 50 V
Current - Collector (Ic) (Max): ≥ 100 mA
Power - Max: ≥ 250 mW
Mounting Type: Surface Mount
Package / Case: TO-236-3, SC-59, SOT-23-3 (physical compatibility)
RoHS Status: ROHS3 Compliant

Secondary Compatibility Parameters:

DC Current Gain (hFE) (Min): ≥ 210 @ specified conditions
Vce Saturation: ≤ 250 mV @ 10 mA, 100 mA
Operating Temperature: ≥ 150°C (TJ)
Frequency - Transition: ≥ 100 MHz

Substitute parts are grouped into two categories:

Category A - Direct Electrical Equivalents (All parameters match or exceed specifications): Parts that maintain identical electrical specifications and package compatibility with the 2PD601AR,115.

Category B - Enhanced Performance Substitutes (Exceed specifications in one or more parameters): Parts that provide higher current capability, higher frequency response, or improved saturation characteristics while maintaining voltage and power ratings at or above the original specification.

Parameter Comparison

Part Number	Manufacturer	Product Status	Ic (Max) mA	Vce Breakdown (Max) V	Power (Max) mW	Frequency (Transition) MHz	Package	Vce Sat (Max) mV	hFE (Min)
2PD601AR,115	NXP USA Inc.	Obsolete	100	50	250	100	SOT-23-3	250	210
2PD601ART,215	Nexperia USA Inc.	Active	100	50	250	100	SOT-23-3	250	210
2PD601BRL,215	Nexperia USA Inc.	Active	200	50	250	250	SOT-23-3	250	210
BC817-40LT1G	onsemi	Active	500	45	300	100	SOT-23-3	700	250
BC847BWH6433XTMA1	Infineon Technologies	Obsolete	100	45	250	250	SOT-323	600	200
BC850BE6327HTSA1	Infineon Technologies	Last Time Buy	100	45	330	250	SOT-23-3	600	200
BCW72LT1G	onsemi	Active	100	45	300	300	SOT-23-3	250	200
BCX70GE6327HTSA1	Infineon Technologies	Last Time Buy	100	45	330	250	SOT-23-3	550	120
FMMT413TD	Diodes Incorporated	Active	100	50	330	150	SOT-23-3	150	50
FMMT619TA	Diodes Incorporated	Active	2000	50	625	165	SOT-23-3	220	200
MMBT6428LT1G	onsemi	Active	200	50	225	700	SOT-23-3	600	250

Engineering Selection Recommendations

Tier 1 - Direct Replacement (Recommended for Obsolescence Mitigation):

The 2PD601ART,215 (Nexperia USA Inc.) is the primary direct equivalent. This part maintains identical electrical specifications (100 mA, 50 V, 250 mW, 100 MHz) and package compatibility (SOT-23-3). The part is currently Active with high inventory availability (10,200 pcs). Nexperia is the successor entity to NXP's semiconductor operations, ensuring design continuity and manufacturing consistency. RoHS3 compliance and MSL 1 rating match the original specification.

Tier 2 - Enhanced Performance Substitutes (For Improved Specifications):

The 2PD601BRL,215 (Nexperia USA Inc., Active) provides doubled collector current capability (200 mA) and increased transition frequency (250 MHz) while maintaining the 50 V voltage rating and SOT-23-3 package. This part is suitable for applications requiring higher current handling or improved high-frequency performance without circuit redesign.

The MMBT6428LT1G (onsemi, Active) offers the highest transition frequency (700 MHz) with 200 mA collector current and 50 V voltage rating. This part is appropriate for RF and high-speed switching applications. Inventory availability is substantial (23,300 pcs).

The FMMT619TA (Diodes Incorporated, Active) provides maximum current capability (2 A) and power dissipation (625 mW) with 50 V voltage rating. This part is suitable for high-current driver applications. Inventory is extensive (155,100 pcs).

Tier 3 - Conditional Substitutes (Voltage Derating Required):

Parts with 45 V collector-emitter breakdown voltage (BC817-40LT1G, BCW72LT1G, BC850BE6327HTSA1, BCX70GE6327HTSA1) are suitable only for applications where the maximum supply voltage does not exceed 45 V. These parts are not recommended as direct replacements for 50 V rated designs without circuit verification.

Tier 4 - Not Recommended:

BC847BWH6433XTMA1 (Obsolete status, SOT-323 package incompatibility) and BCX70GE6327HTSA1 (reduced hFE minimum of 120 vs. 210) do not meet substitution criteria.

Frequently Asked Questions (FAQ)

Q1: Can I use 2PD601ART,215 as a direct replacement for 2PD601AR,115?

A: Yes. The 2PD601ART,215 is a direct electrical and mechanical equivalent. Both parts are NPN transistors with identical ratings: 50 V collector-emitter breakdown, 100 mA maximum collector current, 250 mW power dissipation, 100 MHz transition frequency, and SOT-23-3 package. The primary difference is product status (Active vs. Obsolete) and packaging format (Tape & Reel vs. bulk). No circuit modifications are required.

Q2: What is the difference between 2PD601ART,215 and 2PD601BRL,215?

A: The 2PD601BRL,215 provides enhanced performance specifications: collector current is doubled (200 mA vs. 100 mA) and transition frequency is increased (250 MHz vs. 100 MHz). Both maintain the 50 V voltage rating and SOT-23-3 package. The 2PD601BRL,215 is suitable for applications requiring higher current or faster switching without circuit redesign, as it exceeds the original specifications in all critical parameters.

Q3: Why do some substitute parts have 45 V ratings instead of 50 V?

A: Parts such as BC817-40LT1G, BCW72LT1G, and BC850BE6327HTSA1 have 45 V collector-emitter breakdown ratings. These parts are not direct equivalents for 50 V designs. They are suitable only for applications where the maximum supply voltage does not exceed 45 V. Use of these parts in 50 V circuits requires circuit verification and may result in reduced reliability margins.

Q4: What does "Last Time Buy" product status mean?

A: "Last Time Buy" indicates that the manufacturer has announced end-of-life for the part and will accept orders only until a specified cutoff date. Parts with this status (BC850BE6327HTSA1, BCX70GE6327HTSA1) should not be selected for new designs. Existing inventory may be available, but long-term supply is not guaranteed.

Q5: Can I use FMMT619TA in place of 2PD601AR,115?

A: FMMT619TA is electrically compatible but represents a significant performance upgrade. It provides 2 A collector current (vs. 100 mA), 625 mW power dissipation (vs. 250 mW), and 165 MHz transition frequency (vs. 100 MHz), all within the 50 V voltage rating and SOT-23-3 package. This part is suitable for high-current applications but may be oversized for low-current designs. Verify that the application benefits from the enhanced specifications before substitution.

Q6: What is the significance of the SOT-23-3 package designation?

A: SOT-23-3 (also designated TO-236-3 or SC-59) is a three-terminal surface mount package with standardized pin configuration and footprint. All substitute parts listed maintain this package compatibility, ensuring direct PCB footprint compatibility without layout modifications. Package compatibility is a mandatory substitution criterion.

Q7: Are all listed substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed in this document are RoHS3 compliant and have MSL 1 (Unlimited) moisture sensitivity ratings, matching the original 2PD601AR,115 specification. This ensures compliance with environmental and regulatory requirements.

Q8: Which substitute part offers the best high-frequency performance?

A: The MMBT6428LT1G provides the highest transition frequency at 700 MHz, compared to 100 MHz for the original 2PD601AR,115. This part is suitable for RF applications, high-speed switching circuits, and applications requiring superior frequency response. It maintains 50 V voltage rating and 200 mA collector current within the SOT-23-3 package.

Q9: What is the difference between "Tape & Reel (TR)" and "Cut Tape (CT) & Digi-Reel" packaging?

A: Tape & Reel (TR) packaging supplies components on continuous carrier tape wound on reels, suitable for high-volume automated assembly. Cut Tape (CT) & Digi-Reel packaging provides smaller quantities cut from the reel for lower-volume applications. Both formats are compatible with standard pick-and-place equipment. Selection depends on production volume and inventory requirements, not electrical performance.

Q10: Can I substitute a part with higher current rating (e.g., FMMT619TA at 2 A) in a circuit designed for 100 mA?

A: Yes, provided the circuit design does not depend on current limiting characteristics of the original transistor. Higher current-rated parts are generally suitable for lower-current applications as they provide additional performance margin. However, verify that base drive circuitry and thermal management remain appropriate for the substituted part. No circuit modifications are typically required for upward current rating substitution.

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