NXP 2PC4617Q,115 Equivalent & Substitute Parts

Part Overview

The NXP 2PC4617Q,115 is a surface mount NPN bipolar junction transistor (BJT) rated for 50 V collector-emitter breakdown voltage and 150 mA maximum collector current. This device is classified as obsolete, which necessitates identification of active equivalent and substitute parts for ongoing design support and procurement. The 2PC4617Q,115 is packaged in SC-75 (SOT-416) surface mount configuration and is ROHS3 compliant with unlimited moisture sensitivity rating.

Key Parameters

Parameter	Value	Unit
Transistor Type	NPN	—
Voltage - Collector Emitter Breakdown (Max)	50	V
Current - Collector (Ic) (Max)	150	mA
Power - Max	150	mW
Frequency - Transition	100	MHz
DC Current Gain (hFE) (Min) @ Ic, Vce	120 @ 1mA, 6V	—
Vce Saturation (Max) @ Ib, Ic	200mV @ 5mA, 50mA	—
Current - Collector Cutoff (Max)	100	nA
Operating Temperature (TJ)	150	°C
Mounting Type	Surface Mount	—
Package / Case	SC-75, SOT-416	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the 2PC4617Q,115 is determined by the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

Transistor type must be NPN
Collector-emitter breakdown voltage (VCEO) must be 50 V or greater
Maximum collector current (Ic) must be 150 mA or greater
DC current gain (hFE) minimum must be 120 or greater at specified test conditions
Collector cutoff current (ICBO) must not exceed 100 nA

Mechanical Compatibility Criteria:

Surface mount mounting type required
Package must be SC-75 (SOT-416) or functionally equivalent surface mount package
RoHS3 compliance required
Moisture sensitivity level MSL 1 required

Performance Enhancement Allowances:

Transition frequency may exceed 100 MHz
Maximum power dissipation may exceed 150 mW
Operating temperature range may exceed 150°C maximum
Vce saturation may be higher than 200 mV if other parameters are met

Substitute parts are grouped into two categories: direct package equivalents (SC-75/SOT-416) and alternative package solutions (SOT-523, SOT-323, SOT-883, SSM) that maintain electrical compatibility while offering different form factors and thermal characteristics.

Parameter Comparison

Part Number	Manufacturer	Ic (Max) mA	VCEO (Max) V	Power (Max) mW	fT (MHz)	hFE (Min) @ 1mA, 6V	Package	Status
2PC4617Q,115	NXP USA Inc.	150	50	150	100	120	SC-75	Obsolete
2SC4617TLQ	Rohm Semiconductor	150	50	150	180	120	SC-75	Active
2DC4617Q-7-F	Diodes Incorporated	150	50	150	180	120	SOT-523	Active
2DC4617R-7-F	Diodes Incorporated	150	50	150	180	180	SOT-523	Active
2DC4617S-7-F	Diodes Incorporated	150	50	150	180	270	SOT-523	Active
2PC4081Q,115	Nexperia USA Inc.	150	50	200	100	120	SOT-323	Active
2PC4617QM,315	Nexperia USA Inc.	100	50	430	100	120	SOT-883	Active
2PC4617QMB,315	NXP USA Inc.	100	50	250	100	120	SOT-883	Active
2SC4738-Y,LF	Toshiba Semiconductor and Storage	150	50	100	80	120	SC-75	Active
S2SC4617G	onsemi	100	50	125	180	120	SC-75	Active

Engineering Selection Recommendations

Direct Package Equivalents (SC-75/SOT-416):

The 2SC4617TLQ (Rohm Semiconductor) and S2SC4617G (onsemi) maintain the original SC-75 package footprint. The 2SC4617TLQ offers identical electrical specifications with enhanced transition frequency (180 MHz vs. 100 MHz) and active product status. The S2SC4617G provides 180 MHz transition frequency but with reduced maximum collector current (100 mA) and power dissipation (125 mW), suitable for applications not requiring full 150 mA capability.

The 2SC4738-Y,LF (Toshiba) maintains SC-75 packaging and 150 mA collector current but operates at lower transition frequency (80 MHz) and reduced power dissipation (100 mW), appropriate for lower-speed applications.

Alternative Package Solutions:

The 2DC4617Q-7-F, 2DC4617R-7-F, and 2DC4617S-7-F (Diodes Incorporated) provide SOT-523 packaging with 150 mA collector current and 180 MHz transition frequency. These parts differ in DC current gain specifications (120, 180, and 270 respectively), allowing selection based on gain requirements. All three are active products with ROHS3 compliance.

The 2PC4081Q,115 (Nexperia USA Inc.) offers SOT-323 packaging with automotive qualification (AEC-Q101) and increased power dissipation (200 mW), suitable for automotive applications requiring higher thermal capability.

The 2PC4617QM,315 and 2PC4617QMB,315 (Nexperia/NXP) employ SOT-883 packaging with reduced collector current (100 mA) but significantly enhanced power dissipation (430 mW and 250 mW respectively). The 2PC4617QM,315 carries automotive qualification (AEC-Q100).

Selection Basis:

All substitute parts maintain ROHS3 compliance and MSL 1 rating. Selection should prioritize active product status and package compatibility with existing PCB layouts. Transition frequency enhancement (100 MHz to 180 MHz) in most substitutes provides performance margin without electrical incompatibility. Reduced collector current in SOT-883 variants (100 mA vs. 150 mA) requires verification against circuit current requirements.

Frequently Asked Questions (FAQ)

Q: Can the 2SC4617TLQ directly replace the 2PC4617Q,115 without PCB modification?

A: Yes. The 2SC4617TLQ maintains identical SC-75 (SOT-416) packaging and pinout. Electrical parameters are compatible: 150 mA collector current, 50 V breakdown voltage, and 120 minimum DC current gain. The enhanced 180 MHz transition frequency provides performance improvement without circuit redesign.

Q: What is the primary difference between the Diodes Incorporated 2DC4617Q-7-F, 2DC4617R-7-F, and 2DC4617S-7-F parts?

A: All three parts share identical electrical ratings (150 mA, 50 V, 150 mW, 180 MHz) and SOT-523 packaging. The distinction is DC current gain: 2DC4617Q-7-F specifies 120 minimum, 2DC4617R-7-F specifies 180 minimum, and 2DC4617S-7-F specifies 270 minimum. Selection depends on circuit bias network design and gain requirements.

Q: Why do the SOT-883 variants (2PC4617QM,315 and 2PC4617QMB,315) have reduced collector current (100 mA vs. 150 mA)?

A: The SOT-883 package is a smaller form factor optimized for space-constrained applications. The 100 mA rating reflects the thermal and electrical design of this package. These parts are suitable only for circuits requiring 100 mA or less collector current. Verify circuit current requirements before selection.

Q: Is the 2PC4081Q,115 suitable for non-automotive applications?

A: Yes. The 2PC4081Q,115 is automotive-qualified (AEC-Q101) but functions in non-automotive circuits. It offers SOT-323 packaging with 200 mW power dissipation (vs. 150 mW in the original part), providing thermal margin. PCB layout modification is required due to different package footprint.

Q: What is the impact of the 2SC4738-Y,LF lower transition frequency (80 MHz vs. 100 MHz)?

A: The 2SC4738-Y,LF operates at 80 MHz transition frequency, suitable for applications with signal frequencies below approximately 8 MHz. For higher-frequency circuits, this part may exhibit reduced gain at operating frequency. Verify circuit frequency requirements before selection.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 compliance status. All maintain MSL 1 (unlimited) moisture sensitivity rating, matching the original 2PC4617Q,115 specification.

Q: Can SOT-523 packaged parts (Diodes Incorporated 2DC4617 series) be used as drop-in replacements?

A: No. SOT-523 packaging differs from SC-75 (SOT-416) in pinout and footprint. PCB redesign is required. However, electrical compatibility is maintained: 150 mA collector current, 50 V breakdown voltage, and enhanced 180 MHz transition frequency.

Q: Which substitute part offers the best thermal performance?

A: The 2PC4617QM,315 (SOT-883, 430 mW) and 2PC4617QMB,315 (SOT-883, 250 mW) provide the highest power dissipation ratings. However, these parts are limited to 100 mA collector current. For 150 mA applications, the 2PC4081Q,115 (200 mW, SOT-323) offers improved thermal capability over the original 150 mW specification.

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