TSA894CT A3G Equivalent & Substitute Parts

Part Overview

The TSA894CT A3G is a PNP bipolar junction transistor manufactured by Taiwan Semiconductor Corporation, designed for general-purpose switching and amplification applications. This device features a 500 V collector-emitter breakdown voltage rating with a maximum collector current of 150 mA and 1 W power dissipation capability in a through-hole TO-92 package.

The TSA894CT A3G is classified as obsolete. Locating equivalent substitute parts is necessary to support ongoing production requirements, maintenance operations, and system redesigns where this component is specified. Active alternatives with compatible electrical characteristics are available to ensure design continuity.

Substiute Parts

TSA894CT A3G

Taiwan Semiconductor CorporationIn Stock: 1189TSA894CT A3G Datasheet

Current PartRFQ

TSA884CX RFG

Taiwan Semiconductor CorporationIn Stock: 12889TSA884CX RFG Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TSA894CT A3G is determined by electrical parameter equivalence across the following critical specifications:

Electrical Matching Criteria:

• Transistor polarity (PNP)
• Collector-emitter breakdown voltage (500 V)
• Maximum collector current (150 mA)
• DC current gain (hFE minimum 150 @ 1mA, 10V)
• Vce saturation characteristics (500mV @ 10mA, 50mA)
• Collector cutoff current (100 nA maximum)
• Transition frequency (50 MHz)
• Operating temperature range (150°C maximum junction temperature)

The TSA884CX RFG meets all electrical parameter requirements for functional equivalence. The primary distinction between the main part and its substitute is the mounting technology and package form factor: the TSA894CT A3G uses through-hole TO-92 packaging, while the TSA884CX RFG employs surface-mount SOT-23 packaging. Both devices are manufactured by Taiwan Semiconductor Corporation and share identical electrical performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

TSA884CX RFG is the qualified substitute for TSA894CT A3G based on the following factors:

Electrical Equivalence: All critical electrical parameters match the original specification, including voltage rating, current capacity, gain characteristics, and frequency response. The device operates within identical temperature ranges and maintains equivalent saturation behavior.

Product Status: The TSA884CX RFG is classified as active, ensuring ongoing availability and manufacturing support. The TSA894CT A3G is obsolete, making the active substitute the appropriate choice for new designs and continued production.

Regulatory Compliance: Both devices maintain ROHS3 compliance and REACH unaffected status, satisfying environmental and regulatory requirements without modification to the design.

Package Consideration: The TSA884CX RFG uses surface-mount SOT-23 packaging instead of through-hole TO-92. This substitution requires printed circuit board redesign and assembly process modification. Applications requiring through-hole mounting must evaluate alternative solutions or implement adapter techniques.

Power Dissipation: The TSA884CX RFG is rated for 300 mW maximum power dissipation compared to 1 W for the TSA894CT A3G. Circuit designs operating near the 1 W limit require thermal analysis to confirm the substitute device operates within safe margins.

Frequently Asked Questions (FAQ)

Q: Can the TSA884CX RFG directly replace the TSA894CT A3G in existing through-hole designs?

A: Electrical substitution is valid; however, physical replacement requires circuit board modification. The TSA894CT A3G uses through-hole TO-92 packaging for insertion into plated holes, while the TSA884CX RFG requires surface-mount SOT-23 pads. Direct socket replacement is not possible without board redesign or adapter implementation.

Q: Are the electrical characteristics identical between these two parts?

A: Yes. Both devices share identical ratings for collector-emitter breakdown voltage (500 V), maximum collector current (150 mA), DC current gain (150 minimum), saturation voltage, cutoff current, and transition frequency (50 MHz). Operating temperature limits are also equivalent at 150°C maximum junction temperature.

Q: What is the significance of the power rating difference?

A: The TSA894CT A3G is rated for 1 W maximum power dissipation, while the TSA884CX RFG is rated for 300 mW. This difference reflects the thermal characteristics of the respective packages. Designs operating at power levels between 300 mW and 1 W require verification that the substitute device remains within safe operating limits under actual circuit conditions.

Q: Are both parts compliant with environmental regulations?

A: Yes. Both the TSA894CT A3G and TSA884CX RFG are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards for electronic components.

Q: What is the moisture sensitivity level difference?

A: The TSA894CT A3G has MSL 1 (unlimited shelf life without moisture control), while the TSA884CX RFG has MSL 3 (168-hour floor life after moisture exposure). The substitute part requires standard moisture control procedures during storage and handling to maintain reliability.

Q: Can the TSA884CX RFG be used in new designs?

A: Yes. The TSA884CX RFG is classified as active and is the appropriate choice for new designs requiring PNP transistors with 500 V breakdown voltage and 150 mA current capacity. The surface-mount SOT-23 package is standard in modern circuit design practices.