FCX593TA Equivalent & Substitute Parts

Part Overview

The FCX593TA is an active production PNP bipolar junction transistor manufactured by Diodes Incorporated, rated for 100 V collector-emitter breakdown voltage and 1 A maximum collector current. The device is packaged in SOT-89-3 surface mount configuration with a maximum power dissipation of 1 W and transition frequency of 50 MHz. This transistor is suitable for general-purpose switching and amplification applications requiring PNP polarity in compact surface mount packages.

Substitute parts are identified when equivalent electrical performance can be achieved within the specified parameter ranges while maintaining compatibility with the SOT-89-3 package footprint and surface mount assembly requirements.

Key Parameters

Parameter	Value	Unit
Transistor Type	PNP	—
Current - Collector (Ic) Max	1	A
Voltage - Collector Emitter Breakdown (Max)	100	V
Power - Max	1	W
Frequency - Transition	50	MHz
Mounting Type	Surface Mount	—
Package / Case	TO-243AA	—
Operating Temperature Range	-55 to 150	°C
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitute parts for the FCX593TA are qualified based on the following electrical and mechanical parameters:

Critical Matching Parameters:

Transistor polarity: PNP
Maximum collector current: 1 A or greater
Maximum collector-emitter breakdown voltage: 100 V or greater
Package type: TO-243AA surface mount
RoHS3 compliance status
Moisture sensitivity level: 1 (Unlimited)

Performance Parameters (Allowable Variation):

Transition frequency: 50 MHz or greater
Maximum power dissipation: 500 mW or greater
DC current gain (hFE): 100 minimum or greater
Vce saturation: within acceptable switching performance range

All substitute parts listed maintain electrical equivalence within the specified parameter envelope and are compatible with the original PCB footprint and assembly process.

Parameter Comparison

Parameter	FCX593TA (Diodes)	2SA1416S-TD-E (onsemi)	2SA1416T-TD-E (onsemi)	PBSS9110X,135 (Nexperia)
Transistor Type	PNP	PNP	PNP	PNP
Current - Collector (Ic) Max	1 A	1 A	1 A	1 A
Voltage - Collector Emitter Breakdown (Max)	100 V	100 V	100 V	100 V
Vce Saturation (Max)	300 mV @ 25 mA, 250 mA	400 mV @ 40 mA, 400 mA	400 mV @ 40 mA, 400 mA	320 mV @ 100 mA, 1 A
Current - Collector Cutoff (Max)	100 nA	100 nA	100 nA	100 nA
DC Current Gain (hFE) Min	100 @ 500 mA, 5 V	100 @ 100 mA, 5 V	100 @ 100 mA, 5 V	150 @ 500 mA, 5 V
Power - Max	1 W	500 mW	500 mW	2 W
Frequency - Transition	50 MHz	120 MHz	120 MHz	100 MHz
Operating Temperature (TJ)	-55 to 150 °C	150 °C	150 °C	150 °C
Package / Case	TO-243AA	TO-243AA	TO-243AA	TO-243AA
Supplier Device Package	SOT-89-3	PCP	PCP	SOT-89
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active	Active	Active

Engineering Selection Recommendations

FCX593TA (Diodes Incorporated) Primary choice for applications requiring the specified 1 W power dissipation rating. All electrical parameters meet baseline requirements. Active production status with 17,298 units in stock. RoHS3 compliant and REACH unaffected. Suitable for general-purpose PNP switching applications.

2SA1416S-TD-E and 2SA1416T-TD-E (onsemi) Both variants are electrically equivalent with identical electrical specifications. These parts feature higher transition frequency (120 MHz) compared to the FCX593TA. Maximum power dissipation is 500 mW, which is lower than the original part. Both are active production devices with RoHS3 compliance. Selection between S and T variants depends on packaging and supply chain requirements; both are available in Tape & Reel format. Suitable for applications where the 500 mW power rating is sufficient and higher frequency performance is beneficial.

PBSS9110X,135 (Nexperia USA Inc.) Highest power dissipation rating at 2 W, providing additional thermal margin for high-current applications. Transition frequency of 100 MHz exceeds the original specification. DC current gain (hFE) of 150 is superior to the FCX593TA baseline of 100. Automotive grade qualification with AEC-Q100 certification. RoHS3 compliant. Suitable for automotive applications and designs requiring enhanced power handling capability.

All substitute parts maintain TO-243AA package compatibility and surface mount assembly compatibility with the original FCX593TA design.

Frequently Asked Questions (FAQ)

Q: Can the 2SA1416S-TD-E or 2SA1416T-TD-E be used as direct replacements for the FCX593TA?

A: Yes, both onsemi parts are electrically compatible substitutes. They maintain identical maximum collector current (1 A), collector-emitter breakdown voltage (100 V), and DC current gain specifications. The primary difference is reduced maximum power dissipation (500 mW versus 1 W). Applications dissipating less than 500 mW can use these parts without modification. Applications requiring the full 1 W rating must use the FCX593TA or PBSS9110X,135.

Q: What is the difference between the 2SA1416S-TD-E and 2SA1416T-TD-E?

A: Both parts are electrically identical with the same electrical specifications. The difference is in the manufacturer's internal designation and potentially in packaging tape configuration. Both are available in Tape & Reel format and are suitable for automated assembly. Selection can be based on supplier availability and lead time.

Q: Is the PBSS9110X,135 suitable for non-automotive applications?

A: Yes. The PBSS9110X,135 is qualified to automotive standards (AEC-Q100) but is not restricted to automotive use. It can be used in any application where the electrical specifications are compatible. The automotive qualification indicates higher reliability and quality assurance standards.

Q: What is the significance of the different Vce saturation values across the substitute parts?

A: Vce saturation indicates the voltage drop across the transistor when fully saturated (conducting). Lower saturation voltage results in lower power dissipation and improved efficiency. The FCX593TA has 300 mV saturation at specified conditions, while the onsemi parts have 400 mV and the Nexperia part has 320 mV. For switching applications, lower saturation voltage is generally preferable. For linear amplification, saturation voltage is less critical.

Q: Are all substitute parts available in the same package footprint?

A: Yes. All substitute parts use the TO-243AA package case, which provides identical PCB footprint compatibility. The supplier device packages differ (SOT-89-3, PCP, SOT-89), but these are equivalent designations for the same physical package. No PCB layout modifications are required when substituting between these parts.

Q: What does RoHS3 compliance mean for these transistors?

A: RoHS3 compliance indicates the parts meet Restriction of Hazardous Substances Directive requirements, restricting the use of specific hazardous materials including lead, cadmium, mercury, and certain flame retardants. All listed parts are RoHS3 compliant, ensuring compatibility with modern manufacturing and environmental regulations.

Q: Can I use the PBSS9110X,135 in place of the FCX593TA for all applications?

A: The PBSS9110X,135 is a suitable substitute for applications within its electrical specifications. It provides superior power dissipation (2 W), higher transition frequency (100 MHz), and higher DC current gain (150). Applications designed for the FCX593TA will function with the PBSS9110X,135. However, the higher performance characteristics may not be necessary for all applications, and cost considerations may favor the original part or lower-cost alternatives.

Q: What is the operating temperature range difference between the FCX593TA and substitute parts?

A: The FCX593TA specifies an operating temperature range of -55°C to 150°C. The substitute parts specify only the maximum junction temperature of 150°C without explicit minimum temperature specification. For applications requiring operation below 0°C, the FCX593TA's explicit -55°C minimum specification should be verified against the substitute parts' detailed datasheets.

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