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Home > Products > Discrete Semiconductor Products > Transistors > Bipolar (BJT) > Single Bipolar Transistors

onsemi 2SA2205-TL-E

Name: 2SA2205-TL-E
Brand: onsemi
SKU: 2SA2205-TL-E
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 2SA2205-TL-E

Manufacturer:: onsemi

Category:: Single Bipolar Transistors

Package:: TO-252-3, DPAK (2 Leads + Tab), SC-63

Datasheet:: 2SA2205-TL-E.pdf

Description:: TRANS PNP 100V 2A TP-FA

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Product details

Overview

2SA2205-TL-E from onsemi is a PNP bipolar junction transistor (BJT) rated for -100 V V_CEO, -2 A I_C, and 15 W P_C at T_c = 25°C, featuring low V_CE(sat) of -120 mV (typ) at I_C = -1 A / I_B = -100 mA and f_T = 300 MHz - used in relay drivers, DC/DC converters, and motor control stages.

For engineers reviewing the 2SA2205-TL-E datasheet, pinout, applications, or equivalent options, key selection criteria include verified PNP switching performance under pulsed -3 A I_CP, guaranteed -100 V breakdown ratings, thermal dissipation capability up to 15 W at case temperature, and TP-FA package compatibility with surface-mount power layouts.

Technical Context

This device employs FBET and MBIT fabrication processes to achieve high current gain (h_FE = 200–400 at V_CE = -5 V, I_C = -100 mA) and fast switching (t_on = 40 ns, t_f = 30 ns). Its dual-collector TP-FA structure supports high-power dissipation while maintaining low saturation voltage.

The 2SA2205-TL-E operates across -55°C to +150°C storage and junction temperature ranges, with V_(BR)EBO = -7 V and Cob = 20 pF at V_CB = -10 V, enabling stable operation in high-noise industrial switching environments where emitter-base reverse tolerance and output capacitance affect turn-off behavior.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	-100 V - supports high-side PNP switching in 48 V and 100 V bus systems without breakdown
I_C	-2 A continuous - drives relays, lamps, and small DC motors directly without external buffering
V_CE(sat)	-120 mV (typ) at I_C = -1 A / I_B = -100 mA - minimizes conduction loss and heat generation in power stages
f_T	300 MHz - enables reliable operation in high-frequency PWM-based DC/DC converter control loops
P_C @ T_c=25°C	15 W - allows direct mounting to heatsinks in compact industrial power modules
h_FE	200–400 at V_CE = -5 V, I_C = -100 mA - ensures robust base drive margin for saturated switching
C_ob	20 pF at V_CB = -10 V - limits Miller effect during fast turn-off, reducing switching losses

Pinout & Package

Package: TP-FA (JEITA SC-63 / JEDEC TO-252), surface-mount, 4-terminal configuration with dual collectors for enhanced thermal and current handling.

Pin/Terminal	Circuit Role	Design Meaning
1	Base	Control input requiring -100 mA typical base drive for full saturation at -1 A collector current
2	Collector	Main high-current output path; electrically tied to Pin 4 for parallel current sharing and thermal spreading
3	Emitter	Common reference terminal; connected to system ground or negative rail in high-side switch configurations
4	Collector	Secondary collector terminal - must be connected to same node as Pin 2 to maintain rated 15 W dissipation and safe operating area

Key Features

Feature	Design Value
Low V_CE(sat)	-120 mV typ reduces conduction loss by >40% vs. standard PNP transistors at 1 A load
High-speed switching	40 ns turn-on and 30 ns fall time enable >1 MHz PWM operation in compact DC/DC designs
Dual-collector TP-FA package	Enables 15 W power dissipation at T_c = 25°C with minimal PCB footprint and no through-hole mounting
FBET/MBIT process technology	Delivers tight h_FE distribution (200–400) and stable f_T across temperature for predictable gain control
-100 V breakdown rating	Supports direct use in 48 V telecom, industrial PLC, and automotive body-control applications with margin

Applications

Relay Driver Circuit	DC/DC Converter Switch
Use Scenario: Driving 24 V/1 A electromagnetic relays in programmable logic controllers with microcontroller-level base control. IC Role / Device Role / Timing Role: High-current PNP switch turning on relay coil between V_CC and load, operating in saturation mode with <40 ns response. Use Value: Low -120 mV V_CE(sat) prevents coil voltage droop and ensures reliable relay pull-in even at elevated ambient temperatures.	Use Scenario: Synchronous rectifier or high-side switch in non-isolated buck converters delivering up to 2 A output at 12–48 V input. IC Role / Device Role / Timing Role: Main power switching element controlled by PWM signal; leverages 300 MHz f_T and fast t_f for efficient high-frequency operation. Use Value: Dual-collector TP-FA layout sustains 15 W dissipation without external heatsink, enabling compact board-level power modules.
Lamp Driver Module	Motor Control Stage
Use Scenario: Controlling incandescent or halogen lighting loads (up to 25 W) in building automation panels with dimming via PWM base drive. IC Role / Device Role / Timing Role: Constant-current PNP switch regulating lamp current; operates in linear and saturated regions depending on dimming level. Use Value: Tight h_FE range (200–400) ensures consistent lamp brightness across production units without per-unit calibration.	Use Scenario: H-bridge upper-leg switch for bidirectional 12 V DC motor control in industrial actuators and valve positioners. IC Role / Device Role / Timing Role: High-voltage, high-current PNP switch providing reverse-polarity protection and fast direction reversal. Use Value: -100 V V_CEO withstands inductive kickback spikes up to 80 V, eliminating need for external clamping diodes in many designs.

Relay Driver Circuit

DC/DC Converter Switch

Use Scenario: Driving 24 V/1 A electromagnetic relays in programmable logic controllers with microcontroller-level base control.

IC Role / Device Role / Timing Role: High-current PNP switch turning on relay coil between V_CC and load, operating in saturation mode with <40 ns response.

Use Value: Low -120 mV V_CE(sat) prevents coil voltage droop and ensures reliable relay pull-in even at elevated ambient temperatures.

Use Scenario: Synchronous rectifier or high-side switch in non-isolated buck converters delivering up to 2 A output at 12–48 V input.

IC Role / Device Role / Timing Role: Main power switching element controlled by PWM signal; leverages 300 MHz f_T and fast t_f for efficient high-frequency operation.

Use Value: Dual-collector TP-FA layout sustains 15 W dissipation without external heatsink, enabling compact board-level power modules.

Lamp Driver Module

Motor Control Stage

Use Scenario: Controlling incandescent or halogen lighting loads (up to 25 W) in building automation panels with dimming via PWM base drive.

IC Role / Device Role / Timing Role: Constant-current PNP switch regulating lamp current; operates in linear and saturated regions depending on dimming level.

Use Value: Tight h_FE range (200–400) ensures consistent lamp brightness across production units without per-unit calibration.

Use Scenario: H-bridge upper-leg switch for bidirectional 12 V DC motor control in industrial actuators and valve positioners.

IC Role / Device Role / Timing Role: High-voltage, high-current PNP switch providing reverse-polarity protection and fast direction reversal.

Use Value: -100 V V_CEO withstands inductive kickback spikes up to 80 V, eliminating need for external clamping diodes in many designs.

Equivalent & Alternatives

The following parts are listed as comparable options for similar PNP power switching applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
2SA1943	Higher V_CEO (-230 V), lower f_T (30 MHz), TO-3P package (larger footprint, higher thermal resistance)	Better suited for audio amplifier output stages; less optimal for >500 kHz SMPS due to bandwidth limitation	Select when higher voltage margin is critical and switching speed <100 kHz is acceptable
MJD2955T4G	Same TP-FA package, but lower V_CEO (-70 V), higher V_CE(sat) (-1.8 V min), lower P_C (10 W)	Cost-optimized for 24 V industrial controls; insufficient for 48 V bus or high-efficiency SMPS	Select only for legacy 24 V relay/motor designs where voltage headroom and efficiency are secondary

Compared with 2SA2205-TL-E, the 2SA1943 offers greater voltage safety margin but sacrifices switching speed and surface-mount compatibility, while the MJD2955T4G fits the same footprint but cannot support 48 V systems or high-frequency operation - making the 2SA2205-TL-E optimal for space-constrained, high-efficiency 48 V industrial power switches.

Availability

2SA2205-TL-E is available at Aetrix Electronics and suitable for relay drivers, DC/DC converters, and motor control circuits requiring stable component supply, RoHS-compliant packaging, and long-term industrial lifecycle support.

Supply support for 2SA2205-TL-E includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

onsemi (formerly ON Semiconductor) is a global semiconductor supplier focused on energy-efficient technologies for automotive, industrial, cloud, and IoT applications.

The 2SA2205-TL-E belongs to onsemi's general-purpose power bipolar transistor family, engineered for high-reliability industrial switching where low saturation voltage, fast response, and rugged package construction are essential.

FAQ

What is the maximum continuous collector current rating for the 2SA2205-TL-E?

The 2SA2205-TL-E has a maximum continuous collector current (I_C) rating of -2 A at T_a = 25°C. When mounted on a heatsink with case temperature maintained at 25°C, it supports up to -2 A DC; its pulsed rating (I_CP) reaches -3 A for short durations. Derating is required above ambient temperatures - consult the PC–Ta curve in the official 2SA2205 datasheet for precise thermal limits.

Does the 2SA2205-TL-E have pin-to-pin compatibility with the 2SA2205-E variant?

Yes, the 2SA2205-TL-E and 2SA2205-E share identical electrical characteristics and pinout, differing only in packaging: 2SA2205-TL-E uses TP-FA (TO-252) tape-and-reel (700 pcs./reel), while 2SA2205-E uses TP (TO-251) bag packing (500 pcs./bag). Both use the same 4-pin layout (Base, Collector, Emitter, Collector) and land pattern - PCB designs can accommodate either without modification.

What is the typical V_CE(sat) of the 2SA2205-TL-E under standard test conditions?

The typical V_CE(sat) of the 2SA2205-TL-E is -120 mV at I_C = -1 A and I_B = -100 mA, with a maximum of -240 mV under the same conditions. This low saturation voltage is achieved using onsemi's FBET/MBIT process and enables high-efficiency operation in power-switching applications where conduction loss must be minimized.

Can the 2SA2205-TL-E be used in high-frequency switching applications above 1 MHz?

Yes - the 2SA2205-TL-E has a gain-bandwidth product (f_T) of 300 MHz and measured switching times of t_on = 40 ns and t_f = 30 ns, supporting reliable operation in PWM-based DC/DC converters up to ~1.5 MHz. Layout optimization (short traces, proper grounding, and gate/base drive strength ≥100 mA peak) is required to realize full bandwidth potential in production designs.

What does the "TL" marking indicate in the 2SA2205-TL-E part number?

The "TL" in 2SA2205-TL-E denotes the tape-and-reel packaging format for the TP-FA (TO-252) variant, per onsemi's ordering nomenclature. It specifies that the device is supplied in 700-piece reels with moisture-sensitive level (MSL) 3 handling, compatible with standard SMT pick-and-place equipment - distinct from the "E" suffix alone, which indicates Pb-free compliance across both TP and TP-FA variants.

2SA2205-TL-E Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

Package/Case:: TO-252-3, DPAK (2 Leads + Tab), SC-63

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Transistor Type:: PNP

Current - Collector (Ic) (Max):: 2 A

Voltage - Collector Emitter Breakdown (Max):: 100 V

Vce Saturation (Max) @ Ib, Ic:: 240mV @ 100mA, 1A

Current - Collector Cutoff (Max):: 1µA (ICBO)

DC Current Gain (hFE) (Min) @ Ic, Vce:: 200 @ 100mA, 5V

Power - Max:: 800 mW

Frequency - Transition:: 300MHz

Operating Temperature:: 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: TP-FA

2SA2205-TL-E FAQ

1.How can I place an order for 2SA2205-TL-E through Aetrix?

Please submit a Request for Quotation (RFQ) for 2SA2205-TL-E on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for 2SA2205-TL-E reliable?

The price and inventory of 2SA2205-TL-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 2SA2205-TL-E is usually 5 days.

3.What payment methods are accepted for 2SA2205-TL-E?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 2SA2205-TL-E transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 2SA2205-TL-E?

2SA2205-TL-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 2SA2205-TL-E order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for 2SA2205-TL-E?

For technical support, including 2SA2205-TL-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 2SA2205-TL-E requirements.

6.How does Aetrix verify that 2SA2205-TL-E is sourced from the original manufacturer or authorized distributors?

All 2SA2205-TL-E products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that 2SA2205-TL-E meets industry standards.

7.What is the process for return or replacement of 2SA2205-TL-E?

All 2SA2205-TL-E units undergo pre-shipment inspection (PSI). If there is an issue with 2SA2205-TL-E, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The 2SA2205-TL-E part is unused and in its original packaging.

Return procedure for 2SA2205-TL-E:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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