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Home > Products > Discrete Semiconductor Products > Transistors > FETs, MOSFETs > FETs, MOSFETs

Renesas 2SJ205-T1-AZ

Name: 2SJ205-T1-AZ
Brand: Renesas
SKU: 2SJ205-T1-AZ
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 2SJ205-T1-AZ

Manufacturer:: Renesas

Category:: FETs, MOSFETs

Package:: -

Datasheet:: 2SJ205-T1-AZ.pdf

Description:: P-CHANNEL POWER MOSFET

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Product details

Overview

2SJ205-T1-AZ from Renesas Electronics is a P-channel vertical MOSFET designed for low-voltage switching applications, with R_DS(on) = 3.0 Ω max at V_GS = −4 V and I_D = −0.3 A, V_DSS = −16 V, I_D(DC) = −500 mA, and TO-236AB (SC-59) package. It enables direct drive from 3 V logic ICs in portable audio and VCR camera power management circuits.

For engineers reviewing the 2SJ205-T1-AZ datasheet, 2SJ205-T1-AZ pinout, 2SJ205-T1-AZ application, or 2SJ205-T1-AZ equivalent, key selection criteria include guaranteed low-threshold gate drive compatibility with 3 V systems, absence of external bias resistors, and verified thermal performance on ceramic substrates up to 2.0 W total dissipation.

Technical Context

This device operates as a single P-channel enhancement-mode MOSFET with vertical conduction architecture optimized for low-voltage DC switching. Its gate threshold voltage is specified to ensure reliable turn-on at V_GS ≤ −2.5 V, and its high input impedance eliminates gate drive current concerns in battery-powered signal path control.

The 2SJ205-T1-AZ uses a planar silicon process with source-drain metallization compatible with standard reflow soldering. Absolute maximum ratings define safe operation within −16 V drain-source voltage, −16 V gate-source voltage, and channel temperature limits up to 150°C under defined pulse conditions (PW ≤ 10 ms, duty ≤ 50%).

Key Specifications

Parameter	Value and Actual Design Meaning
V_DSS	−16 V: Maximum blocking voltage for low-voltage DC rail switching without avalanche stress.
R_DS(on) max	3.0 Ω at V_GS = −4 V, I_D = −0.3 A: Enables <1 V conduction loss at 300 mA load current in compact portable designs.
I_D(DC)	−500 mA: Continuous drain current rating suitable for headphone amplifier bias control or VCR motor enable circuits.
V_GS(th)	−0.5 to −2.0 V: Guaranteed turn-on with 3 V logic-level signals, eliminating level-shifting circuitry.
P_T	2.0 W on 16 cm² × 0.7 mm ceramic board: Thermal capability supports sustained operation without heatsinking in space-constrained consumer enclosures.
Package	TO-236AB (SC-59): 3-pin surface-mount package with standardized footprint for automated assembly and thermal relief via PCB copper area.

Pinout & Package

2SJ205-T1-AZ is housed in a TO-236AB (SC-59) plastic surface-mount package with gull-wing leads. The case outline conforms to JEDEC TO-236AB mechanical dimensions and thermal pad layout requirements for ceramic substrate mounting.

Pin/Terminal	Circuit Role	Design Meaning
1 (Gate)	Control electrode	High-impedance input accepting 3 V logic signals directly; no gate resistor required for DC switching.
2 (Drain)	Power output terminal	Connected to negative supply rail or load return path; rated for −16 V blocking and −500 mA continuous current.
3 (Source)	Reference terminal	Internally tied to PCB ground plane in typical high-side switch configuration; defines V_GS reference point.

Key Features

Feature	Design Value
3 V logic-compatible gate drive	Enables direct interface with microcontroller GPIO or 3 V op-amp outputs without level shifters or driver stages.
No external bias resistor needed	Reduces BOM count and PCB area in portable audio power sequencing circuits where space and component count are critical.
Low R_DS(on) at low V_GS	Delivers <1 V drop at 300 mA with −4 V gate drive, improving efficiency in battery-operated VCR camera power rails.
TO-236AB thermal design support	Validated 2.0 W dissipation on 16 cm² ceramic board allows thermal management using standard PCB copper pour instead of discrete heatsinks.

Applications

Headphone Amplifier Power Control	VCR Camera Motor Enable
Use Scenario: Sequencing power to headphone amplifier ICs during system wake-up to prevent pop noise and reduce standby current. IC Role / Device Role / Timing Role: High-side P-channel switch controlling V_CC delivery to analog audio subsystems. Use Value: Low R_DS(on) minimizes voltage drop across switch, preserving headroom for amplifier rail while enabling fast turn-on with 3 V MCU signals.	Use Scenario: Enabling DC motors in camcorder tape transport mechanisms only during active recording or playback. IC Role / Device Role / Timing Role: Load switch isolating motor supply from main battery to prevent leakage and extend battery life. Use Value: Gate threshold ensures full enhancement at 3 V, eliminating need for charge-pump drivers and reducing bill-of-materials cost.
Portable Audio System Bias Management	Low-Power Sensor Interface Power Gating
Use Scenario: Controlling bias current to electret microphone preamplifiers and line-input buffers in battery-powered MP3 players. IC Role / Device Role / Timing Role: Low-leakage P-channel switch managing quiescent current in analog front-end signal chains. Use Value: Verified −500 mA DC rating and −16 V V_DSS allow safe operation across varying Li-ion battery voltages (3.0–4.2 V).	Use Scenario: Power-gating MEMS accelerometers and ambient light sensors between measurement cycles in wearable devices. IC Role / Device Role / Timing Role: Ultra-low-quiescent-current switch disconnecting sensor supply to minimize system sleep current. Use Value: High input impedance prevents loading of 3 V microcontroller output pins, preserving timing accuracy in low-power sleep/wake sequences.

Headphone Amplifier Power Control

VCR Camera Motor Enable

Use Scenario: Sequencing power to headphone amplifier ICs during system wake-up to prevent pop noise and reduce standby current.

IC Role / Device Role / Timing Role: High-side P-channel switch controlling V_CC delivery to analog audio subsystems.

Use Value: Low R_DS(on) minimizes voltage drop across switch, preserving headroom for amplifier rail while enabling fast turn-on with 3 V MCU signals.

Use Scenario: Enabling DC motors in camcorder tape transport mechanisms only during active recording or playback.

IC Role / Device Role / Timing Role: Load switch isolating motor supply from main battery to prevent leakage and extend battery life.

Use Value: Gate threshold ensures full enhancement at 3 V, eliminating need for charge-pump drivers and reducing bill-of-materials cost.

Portable Audio System Bias Management

Low-Power Sensor Interface Power Gating

Use Scenario: Controlling bias current to electret microphone preamplifiers and line-input buffers in battery-powered MP3 players.

IC Role / Device Role / Timing Role: Low-leakage P-channel switch managing quiescent current in analog front-end signal chains.

Use Value: Verified −500 mA DC rating and −16 V V_DSS allow safe operation across varying Li-ion battery voltages (3.0–4.2 V).

Use Scenario: Power-gating MEMS accelerometers and ambient light sensors between measurement cycles in wearable devices.

IC Role / Device Role / Timing Role: Ultra-low-quiescent-current switch disconnecting sensor supply to minimize system sleep current.

Use Value: High input impedance prevents loading of 3 V microcontroller output pins, preserving timing accuracy in low-power sleep/wake sequences.

Equivalent & Alternatives

The following parts are listed as comparable options for similar P-channel low-voltage switching applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
Si2301DDS	R_DS(on) = 0.115 Ω @ V_GS = −4.5 V, but requires −4.5 V for spec-rated performance; V_DSS = −20 V.	Better conduction efficiency above 100 mA, but less margin for 3 V-only drive due to higher V_GS(th) distribution.	Select when higher current (>500 mA) and lower on-resistance are prioritized over strict 3 V compatibility.
DMG2301U	R_DS(on) = 0.095 Ω @ V_GS = −4.5 V; V_DSS = −20 V; TO-236AB package identical to 2SJ205-T1-AZ.	Superior R_DS(on) at same package, but gate threshold not guaranteed below −2.5 V - may require gate pull-up for reliable 3 V logic drive.	Choose when board layout reuse is critical and gate drive can be adjusted to ensure −3 V minimum V_GS.

Compared with Si2301DDS and DMG2301U, the 2SJ205-T1-AZ offers guaranteed turn-on at 3 V with no external components, making it uniquely suited for legacy 3 V logic interfaces where gate voltage margin is constrained and BOM simplification is mandatory.

Availability

2SJ205-T1-AZ is available at Aetrix Electronics and suitable for portable audio power control, VCR camera motor enable, and low-power sensor interface applications requiring stable component supply and long-term industrial availability.

Supply support for 2SJ205-T1-AZ 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

Renesas Electronics Corporation is a global semiconductor manufacturer formed in 2010 through the merger of NEC Electronics and Renesas Technology, specializing in microcontrollers, analog, and power devices for industrial and consumer systems.

The 2SJ205-T1-AZ belongs to Renesas' legacy low-voltage power MOSFET product line, engineered specifically for 3 V logic-driven switching in battery-powered consumer electronics where simplicity, reliability, and minimal external components are essential.

FAQ

What is the guaranteed gate threshold voltage range for 2SJ205-T1-AZ?

The 2SJ205-T1-AZ has a specified gate threshold voltage (V_GS(th)) range of −0.5 V to −2.0 V at I_D = −1 mA. This ensures reliable turn-on with standard 3 V CMOS logic outputs without requiring additional gate drive circuitry. The low upper limit of −2.0 V guarantees full enhancement even under worst-case process and temperature variations, making the 2SJ205-T1-AZ especially robust in portable audio and camera applications where supply voltage may sag near 2.8 V.

Can 2SJ205-T1-AZ be used in high-side switch configurations?

Yes, the 2SJ205-T1-AZ is explicitly designed for high-side switching applications due to its P-channel structure and negative V_GS control. In such configurations, the source connects to the positive supply rail and the drain feeds the load, allowing the device to block reverse current and simplify power domain isolation. Its −16 V V_DSS rating and −500 mA I_D(DC) support common 3.3 V and 5 V rail switching in consumer electronics, and its TO-236AB package facilitates thermal coupling to PCB ground planes for stable operation.

What is the maximum continuous power dissipation for 2SJ205-T1-AZ under standard mounting conditions?

The 2SJ205-T1-AZ is rated for 2.0 W total power dissipation when mounted on a 16 cm² × 0.7 mm ceramic board, per its official datasheet (D18276EJ4V0DS00). This value assumes natural convection cooling and reflects validated thermal performance under JEDEC-standard test conditions. Exceeding this limit risks exceeding the 150°C channel temperature rating, so designers must calculate actual power (I² × R_DS(on)) and verify PCB copper area and ambient temperature margins before finalizing thermal design for the 2SJ205-T1-AZ.

Does 2SJ205-T1-AZ require an external gate resistor for ESD protection or switching speed control?

No, the 2SJ205-T1-AZ does not require an external gate resistor for basic DC switching operation due to its high input impedance and compatibility with 3 V logic drive. Its gate oxide is rated for ±16 V, providing inherent ESD robustness sufficient for typical consumer handling. However, if used in high-frequency PWM applications, a small series gate resistor (e.g., 10–100 Ω) may be added to dampen ringing and reduce EMI - but this is not necessary for the intended low-speed power control use cases like headphone amplifier enable or VCR motor sequencing with the 2SJ205-T1-AZ.

Is 2SJ205-T1-AZ compliant with RoHS and lead-free assembly requirements?

Yes, the 2SJ205-T1-AZ is RoHS-compliant and qualified for lead-free reflow soldering per J-STD-020. Renesas Electronics confirms environmental compliance in accordance with EU RoHS Directive 2011/65/EU, including restrictions on lead, mercury, cadmium, hexavalent chromium, PBB, and PBDE. The TO-236AB package uses matte tin-plated leads compatible with standard SAC305 solder profiles, and the device carries the appropriate marking per Renesas' quality documentation. Customers should verify latest compliance status via Renesas' official product page for 2SJ205-T1-AZ before high-volume production release.

2SJ205-T1-AZ Specifications

Product attributes: Attribute value

Manufacturer:: Renesas

Series:: *

Package/Case:: -

Packaging:: Bulk

Product Status:: Active

FET Type:: -

Technology:: -

Drain to Source Voltage (Vdss):: -

Current - Continuous Drain (Id) @ 25°C:: -

Drive Voltage (Max Rds On, Min Rds On):: -

Rds On (Max) @ Id, Vgs:: -

Vgs(th) (Max) @ Id:: -

Gate Charge (Qg) (Max) @ Vgs:: -

Vgs (Max):: -

Input Capacitance (Ciss) (Max) @ Vds:: -

FET Feature:: -

Power Dissipation (Max):: -

Operating Temperature:: -

Grade:: -

Qualification:: -

Mounting Type:: -

Supplier Device Package:: -

2SJ205-T1-AZ FAQ

1.How can I place an order for 2SJ205-T1-AZ through Aetrix?

Please submit a Request for Quotation (RFQ) for 2SJ205-T1-AZ 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 2SJ205-T1-AZ reliable?

The price and inventory of 2SJ205-T1-AZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 2SJ205-T1-AZ is usually 5 days.

3.What payment methods are accepted for 2SJ205-T1-AZ?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 2SJ205-T1-AZ transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 2SJ205-T1-AZ?

2SJ205-T1-AZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 2SJ205-T1-AZ 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 2SJ205-T1-AZ?

For technical support, including 2SJ205-T1-AZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 2SJ205-T1-AZ requirements.

6.How does Aetrix verify that 2SJ205-T1-AZ is sourced from the original manufacturer or authorized distributors?

All 2SJ205-T1-AZ 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 2SJ205-T1-AZ meets industry standards.

7.What is the process for return or replacement of 2SJ205-T1-AZ?

All 2SJ205-T1-AZ units undergo pre-shipment inspection (PSI). If there is an issue with 2SJ205-T1-AZ, 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 2SJ205-T1-AZ part is unused and in its original packaging.

Return procedure for 2SJ205-T1-AZ:

1.Submit a request within 90 days.

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

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