TSC497CX Equivalent & Substitute Parts

Part Overview

The TSC497CX is an NPN bipolar junction transistor (BJT) manufactured by Taiwan Semiconductor Corporation, designed for surface mount applications in the SOT-23 package. This component operates at 300V collector-emitter breakdown voltage with a maximum collector current of 500mA and 500mW power dissipation. The device is classified as Active product status and is ROHS3 compliant. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained across the same package and performance envelope.

Key Parameters

Parameter	Value	Unit
Transistor Type	NPN	—
Voltage - Collector Emitter Breakdown (Max)	300	V
Current - Collector (Ic) (Max)	500	mA
Power - Max	500	mW
Frequency - Transition	75	MHz
DC Current Gain (hFE) (Min) @ Ic, Vce	100 @ 1mA, 10V	—
Vce Saturation (Max) @ Ib, Ic	300mV @ 25mA, 250mA	—
Current - Collector Cutoff (Max)	100	nA
Operating Temperature (TJ)	150	°C
Package / Case	TO-236-3, SC-59, SOT-23-3	—
Mounting Type	Surface Mount	—

Substitute Part Grouping Explanation

Substitution of the TSC497CX is determined by strict equivalence across the following critical parameters:

Transistor Type: NPN configuration
Voltage Rating: 300V collector-emitter breakdown voltage
Current Rating: 500mA maximum collector current
Power Dissipation: 500mW maximum
Frequency Response: 75MHz transition frequency
DC Current Gain: 100 minimum at specified conditions
Saturation Characteristics: 300mV maximum at defined base and collector currents
Package Compatibility: SOT-23 surface mount package (TO-236-3, SC-59, SOT-23-3)
Mounting Type: Surface mount configuration
Compliance: ROHS3 compliant, REACH unaffected

Substitute parts must match all electrical parameters and maintain identical package specifications to ensure direct replacement capability without circuit redesign or PCB modification.

Parameter Comparison

Parameter	TSC497CX	TSC497CX RFG	Match
Manufacturer	Taiwan Semiconductor Corporation	Taiwan Semiconductor Corporation	Yes
Transistor Type	NPN	NPN	Yes
Voltage - Collector Emitter Breakdown (Max)	300V	300V	Yes
Current - Collector (Ic) (Max)	500mA	500mA	Yes
Power - Max	500mW	500mW	Yes
Frequency - Transition	75MHz	75MHz	Yes
DC Current Gain (hFE) (Min) @ Ic, Vce	100 @ 1mA, 10V	100 @ 1mA, 10V	Yes
Vce Saturation (Max) @ Ib, Ic	300mV @ 25mA, 250mA	300mV @ 25mA, 250mA	Yes
Current - Collector Cutoff (Max)	100nA	100nA	Yes
Operating Temperature (TJ)	150°C	150°C	Yes
Package / Case	TO-236-3, SC-59, SOT-23-3	TO-236-3, SC-59, SOT-23-3	Yes
Mounting Type	Surface Mount	Surface Mount	Yes
Supplier Device Package	SOT-23	SOT-23	Yes
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Yes
REACH Status	REACH Unaffected	REACH Unaffected	Yes
Product Status	Active	Active	Yes

Engineering Selection Recommendations

The TSC497CX RFG is a direct parametric equivalent to the TSC497CX. Both components are manufactured by Taiwan Semiconductor Corporation and maintain identical electrical specifications across all critical parameters including voltage rating, current capacity, power dissipation, frequency response, and gain characteristics. Both devices are packaged in the SOT-23 surface mount configuration and are ROHS3 compliant with REACH unaffected status.

Selection between TSC497CX and TSC497CX RFG is based on availability and supply chain requirements. Both parts carry Active product status and are suitable for direct substitution in existing circuit designs without modification to PCB layout or schematic topology. The TSC497CX RFG variant maintains higher inventory availability (16067 pieces) compared to the standard TSC497CX (1117 pieces), making it the preferred choice for high-volume production or extended lead-time mitigation.

Frequently Asked Questions (FAQ)

Q: Can TSC497CX RFG replace TSC497CX in existing designs?

A: Yes. The TSC497CX RFG is a direct parametric equivalent with identical electrical specifications, package configuration, and compliance certifications. No circuit redesign or PCB modification is required.

Q: Are there any differences in the SOT-23 package between these parts?

A: No. Both parts use the identical SOT-23 surface mount package (TO-236-3, SC-59, SOT-23-3) with matching pin configuration and mechanical dimensions.

Q: What are the key parameters that determine substitution eligibility?

A: Substitution is determined by matching transistor type (NPN), voltage rating (300V), collector current (500mA), power dissipation (500mW), transition frequency (75MHz), DC current gain (100 minimum), saturation voltage (300mV), and package type (SOT-23 surface mount).

Q: Are both parts RoHS and REACH compliant?

A: Yes. Both TSC497CX and TSC497CX RFG are ROHS3 compliant and REACH unaffected.

Q: What is the difference between TSC497CX and TSC497CX RFG?

A: The TSC497CX RFG is the same part with identical electrical and mechanical specifications. The "RFG" designation indicates a specific manufacturing lot or supply variant. All electrical parameters, package specifications, and compliance certifications are equivalent.

Q: Can these parts be used interchangeably in high-frequency applications?

A: Yes. Both parts maintain the same 75MHz transition frequency specification and are suitable for applications within this frequency range.

Q: What is the maximum operating temperature for these transistors?

A: The maximum junction temperature (TJ) is 150°C for both TSC497CX and TSC497CX RFG.

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