2SC4617T1G Equivalent & Substitute Parts

Part Overview

The 2SC4617T1G is an NPN bipolar junction transistor manufactured by onsemi, designed for general-purpose switching and amplification applications. This device features a 50 V collector-emitter breakdown voltage, 100 mA maximum collector current, and 180 MHz transition frequency in a surface mount SC-75 (SOT-416) package. The part is classified as obsolete, necessitating identification of active equivalent and substitute components for new designs and ongoing production requirements.

Key Parameters

Parameter	Value	Unit
Transistor Type	NPN	—
Voltage - Collector Emitter Breakdown (Max)	50	V
Current - Collector (Ic) (Max)	100	mA
Frequency - Transition	180	MHz
Power - Max	125	mW
DC Current Gain (hFE) (Min) @ Ic, Vce	120 @ 1mA, 6V	—
Vce Saturation (Max) @ Ib, Ic	400mV @ 5mA, 60mA	—
Current - Collector Cutoff (Max)	500	nA
Operating Temperature (Max)	150	°C
Mounting Type	Surface Mount	—
Package / Case	SC-75, SOT-416	—

Substitute Part Grouping Explanation

Substitution of the 2SC4617T1G is determined by electrical parameter compatibility and physical package constraints. The primary substitution criteria are:

Electrical Parameters (Must Match or Exceed):

Transistor type: NPN
Voltage - Collector Emitter Breakdown: minimum 50 V
Current - Collector (Max): minimum 100 mA
Frequency - Transition: minimum 180 MHz
DC Current Gain (hFE): minimum 120 @ 1mA, 6V
Operating Temperature: minimum 150°C

Physical Constraints:

Mounting Type: Surface Mount
Package compatibility: SC-75 (SOT-416) preferred; alternative packages acceptable if footprint permits

Product Status Consideration:

Active status preferred due to obsolescence of the main part

The substitute parts are grouped into two categories: parametric equivalents (identical electrical specifications and package) and similar parts (equivalent electrical performance with package or rating variations).

Parameter Comparison

Parameter	2SC4617T1G (Main)	S2SC4617G (Parametric Equivalent)	2PC4617QM,315 (Similar)	2SC4617-R-TP (Similar)	2SC4617TLQ (Similar)
Manufacturer	onsemi	onsemi	Nexperia USA Inc.	Micro Commercial Co	Rohm Semiconductor
Transistor Type	NPN	NPN	NPN	NPN	NPN
Voltage - Collector Emitter Breakdown (Max)	50 V	50 V	50 V	50 V	50 V
Current - Collector (Ic) (Max)	100 mA	100 mA	100 mA	150 mA	150 mA
Frequency - Transition	180 MHz	180 MHz	100 MHz	180 MHz	180 MHz
Power - Max	125 mW	125 mW	430 mW	150 mW	150 mW
DC Current Gain (hFE) (Min) @ Ic, Vce	120 @ 1mA, 6V	120 @ 1mA, 6V	120 @ 1mA, 6V	120 @ 1mA, 6V	120 @ 1mA, 6V
Vce Saturation (Max) @ Ib, Ic	400mV @ 5mA, 60mA	400mV @ 5mA, 60mA	200mV @ 5mA, 50mA	400mV @ 5mA, 50mA	400mV @ 5mA, 50mA
Current - Collector Cutoff (Max)	500 nA	500 nA	100 nA	500 nA	100 nA
Operating Temperature (Max)	150°C	150°C	150°C	150°C	150°C
Package / Case	SC-75, SOT-416	SC-75, SOT-416	SC-101, SOT-883	SOT-523	SC-75, SOT-416
Product Status	Obsolete	Active	Active	Active	Active
RoHS Status	Not specified	ROHS3 Compliant	ROHS3 Compliant	Not specified	ROHS3 Compliant

Engineering Selection Recommendations

S2SC4617G (Parametric Equivalent - Recommended Primary Substitute)

The S2SC4617G is the direct parametric equivalent to the 2SC4617T1G. Both devices share identical electrical specifications, including 50 V breakdown voltage, 100 mA maximum collector current, 180 MHz transition frequency, and 125 mW power rating. The S2SC4617G maintains the same SC-75 (SOT-416) package footprint, enabling direct board-level substitution without layout modifications. The S2SC4617G is manufactured by onsemi with active product status and ROHS3 compliance, providing long-term supply assurance. Packaging is supplied in Tape & Reel format with 9200 pieces in stock.

2SC4617TLQ (Similar - Secondary Substitute)

The 2SC4617TLQ manufactured by Rohm Semiconductor provides electrical compatibility with enhanced current handling capability (150 mA maximum collector current versus 100 mA) and increased power dissipation (150 mW versus 125 mW). The transition frequency remains at 180 MHz, matching the original specification. The package designation is SC-75 (SOT-416), maintaining footprint compatibility. The device is ROHS3 compliant with active product status. This part is suitable for applications requiring higher current margins or thermal headroom.

2SC4617-R-TP (Similar - Alternative Substitute)

The 2SC4617-R-TP manufactured by Micro Commercial Co offers 150 mA maximum collector current and 150 mW power rating with 180 MHz transition frequency. The package is SOT-523, which differs from the original SC-75 footprint and requires board layout modification. This part is supplied in bulk packaging and is suitable for applications where package size reduction is acceptable.

2PC4617QM,315 (Similar - Limited Compatibility)

The 2PC4617QM,315 manufactured by Nexperia USA Inc. meets the 50 V breakdown voltage and 100 mA collector current specifications but operates at 100 MHz transition frequency, which is below the original 180 MHz specification. The package is SOT-883 (SC-101), requiring board layout modification. This part includes AEC-Q100 automotive qualification and is suitable only for applications where the reduced transition frequency is acceptable. The device exhibits superior saturation characteristics (200 mV versus 400 mV) and lower collector cutoff current (100 nA versus 500 nA).

Frequently Asked Questions (FAQ)

Q: Can the S2SC4617G be used as a direct replacement for the 2SC4617T1G?

A: Yes. The S2SC4617G is a parametric equivalent with identical electrical specifications and package footprint. Direct substitution is possible without circuit or board modifications.

Q: What is the primary reason for finding substitutes for the 2SC4617T1G?

A: The 2SC4617T1G is classified as obsolete. Substitute parts with active product status ensure continued availability for new designs and production continuity.

Q: Are there package differences between the substitute parts?

A: Yes. The S2SC4617G and 2SC4617TLQ maintain the SC-75 (SOT-416) package. The 2SC4617-R-TP uses SOT-523 packaging, and the 2PC4617QM,315 uses SOT-883 packaging. Package changes require board layout verification.

Q: Can the 2PC4617QM,315 be used in high-frequency applications?

A: The 2PC4617QM,315 operates at 100 MHz transition frequency, which is lower than the original 180 MHz specification. Use is limited to applications where this reduced frequency is acceptable.

Q: What are the key electrical parameters that determine substitution compatibility?

A: The critical parameters are collector-emitter breakdown voltage (minimum 50 V), maximum collector current (minimum 100 mA), transition frequency (minimum 180 MHz), and DC current gain (minimum 120 @ 1mA, 6V). All substitute parts meet or exceed these specifications.

Q: Do the substitute parts have RoHS compliance?

A: The S2SC4617G, 2PC4617QM,315, and 2SC4617TLQ are ROHS3 compliant. The 2SC4617-R-TP does not specify RoHS status in the provided data.

Q: Which substitute part offers the best thermal performance?

A: The 2PC4617QM,315 offers the highest power dissipation rating at 430 mW, compared to 125 mW for the original part and 150 mW for the other substitutes. This part is suitable for applications requiring enhanced thermal margin.

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

A: The S2SC4617G and 2SC4617TLQ are interchangeable due to identical package footprints and compatible electrical specifications. The 2SC4617-R-TP and 2PC4617QM,315 require board layout modifications and should not be mixed with other substitutes without design review.

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