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

Toshiba Semiconductor and Storage 2SC5819(TE12L,ZF)

Name: 2SC5819(TE12L,ZF)
Brand: Toshiba Semiconductor and Storage
SKU: 2SC5819(TE12L,ZF)
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 2SC5819(TE12L,ZF)

Manufacturer:: Toshiba Semiconductor and Storage

Category:: Single Bipolar Transistors

Package:: TO-243AA

Datasheet:: 2SC5819(TE12L,ZF).pdf

Description:: TRANS NPN 20V 1.5A PW-MINI

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Product details

Overview

2SC5819(TE12L,ZF) from Toshiba is a silicon NPN epitaxial transistor designed for high-speed switching in DC-DC converters and industrial control circuits, featuring h_FE = 400–1000 at I_C = 0.15 A, V_CE(sat) ≤ 0.12 V at I_C = 0.5 A / I_B = 10 mA, and t_f = 45 ns (typ.), enabling efficient low-loss power stage operation.

For engineers reviewing the 2SC5819(TE12L,ZF) datasheet, 2SC5819(TE12L,ZF) pinout, 2SC5819(TE12L,ZF) application, or 2SC5819(TE12L,ZF) equivalent, key selection criteria include verified V_CEO = 20 V, I_C = 1.5 A (DC), P_C = 1.0 W on FR4 (645 mm²), SC-62 package thermal performance, and safe operating area (SOA) limits under pulsed conditions.

Technical Context

This NPN bipolar junction transistor operates in common-emitter configuration with fixed-base drive, optimized for fast turn-off via low storage time (t_stg = 295 ns) and minimal fall time. Its epitaxial base structure supports stable h_FE across I_C = 0.001–1.0 A and T_a = −55°C to 100°C.

The device's SOA is defined for single nonrepetitive pulses up to 10 s on FR4 (1.6 mm, 645 mm² Cu), with derating required above 25°C ambient. V_CEX = 30 V and V_CBO = 40 V support robust voltage margin in flyback and buck topologies.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	20 V - Maximum collector-emitter voltage before breakdown under open-base condition; defines usable input/output swing in switching regulators.
I_C (DC)	1.5 A - Continuous collector current rating at T_a = 25°C on standard FR4 board; sets max steady-state load capability.
V_CE(sat)	≤0.12 V - Saturation voltage at I_C = 0.5 A / I_B = 10 mA; directly determines conduction loss in low-side switch applications.
h_FE	400–1000 - DC current gain at V_CE = 2 V, I_C = 0.15 A; enables low base drive current for efficient gate driving of downstream stages.
t_f	45 ns (typ.) - Fall time under V_CC = −12 V, R_L = 24 Ω, I_B1 = −I_B2 = 17 mA; critical for >1 MHz switching frequency feasibility.
C_ob	18 pF (typ.) - Collector-base capacitance at V_CB = 10 V, f = 1 MHz; impacts switching loss and EMI in hard-switched converters.

Pinout & Package

Package: SC-62 (JEITA), also designated 2-5K1A by Toshiba; surface-mount, 3-pin, plastic molded case with 0.05 g typical mass; compatible with standard reflow profiles per J-STD-020.

Pin/Terminal	Circuit Role	Design Meaning
Emitter (E)	Current sink terminal	Connected to ground or low-side return path; carries full load current and must be routed with low-inductance layout.
Base (B)	Control input	Receives forward bias current to saturate transistor; requires series resistor to limit I_B ≤ 150 mA peak.
Collector (C)	Current source terminal	Connected to switched rail (e.g., V_IN or transformer primary); handles high dV/dt during turn-off.

Key Features

Feature	Design Value
High DC current gain	h_FE = 400–1000 at I_C = 0.15 A - Reduces required base drive power and simplifies driver circuit design.
Low saturation voltage	V_CE(sat) ≤ 0.12 V - Minimizes conduction loss and thermal rise in 12 V/24 V DC-DC output stages.
Fast switching speed	t_f = 45 ns (typ.) - Enables operation up to ~5 MHz in optimized layouts, supporting compact magnetics.
Robust SOA	Rated for 10 s pulse at I_C = 1.5 A / V_CE = 10 V on FR4 - Supports surge-tolerant industrial motor control and relay drivers.

Applications

DC-DC Converter Power Switch	Industrial Relay Driver
Use Scenario: Low-voltage, medium-current step-down converter in programmable logic controller (PLC) power supply. IC Role / Device Role / Timing Role: NPN low-side switch controlling energy transfer into output inductor; driven by PWM controller with 500 kHz–1 MHz frequency. Use Value: V_CE(sat) ≤ 0.12 V ensures <120 mW conduction loss at 1 A, reducing heatsink requirements in confined enclosures.	Use Scenario: Solid-state replacement for electromechanical relays in factory automation I/O modules. IC Role / Device Role / Timing Role: Interface transistor amplifying microcontroller GPIO to drive 24 V DC coil loads with 50 ms on/off cycles. Use Value: h_FE ≥ 400 allows direct drive from 3.3 V MCU with 1 kΩ base resistor, eliminating auxiliary level-shifting stages.
Motor Control Pre-Driver	LED Constant-Current Sink
Use Scenario: Gate driver stage for external MOSFETs in brushed DC motor H-bridge control. IC Role / Device Role / Timing Role: Fast-turning NPN switch sourcing base/gate current to upper MOSFET; operated with 20% duty cycle at 20 kHz. Use Value: t_f = 45 ns ensures clean gate drive edges, minimizing shoot-through risk during dead-time transitions.	Use Scenario: Precision current sink for high-brightness LED strings in industrial signage. IC Role / Device Role / Timing Role: Linear-regulated current path with emitter-follower feedback; biased at I_C = 0.35 A for 350 mA LED current. Use Value: Tight h_FE tolerance (400–1000) and low V_BE(sat) ≤ 1.10 V enable ±3% current accuracy without trimming resistors.

DC-DC Converter Power Switch

Industrial Relay Driver

Use Scenario: Low-voltage, medium-current step-down converter in programmable logic controller (PLC) power supply.

IC Role / Device Role / Timing Role: NPN low-side switch controlling energy transfer into output inductor; driven by PWM controller with 500 kHz–1 MHz frequency.

Use Value: V_CE(sat) ≤ 0.12 V ensures <120 mW conduction loss at 1 A, reducing heatsink requirements in confined enclosures.

Use Scenario: Solid-state replacement for electromechanical relays in factory automation I/O modules.

IC Role / Device Role / Timing Role: Interface transistor amplifying microcontroller GPIO to drive 24 V DC coil loads with 50 ms on/off cycles.

Use Value: h_FE ≥ 400 allows direct drive from 3.3 V MCU with 1 kΩ base resistor, eliminating auxiliary level-shifting stages.

Motor Control Pre-Driver

LED Constant-Current Sink

Use Scenario: Gate driver stage for external MOSFETs in brushed DC motor H-bridge control.

IC Role / Device Role / Timing Role: Fast-turning NPN switch sourcing base/gate current to upper MOSFET; operated with 20% duty cycle at 20 kHz.

Use Value: t_f = 45 ns ensures clean gate drive edges, minimizing shoot-through risk during dead-time transitions.

Use Scenario: Precision current sink for high-brightness LED strings in industrial signage.

IC Role / Device Role / Timing Role: Linear-regulated current path with emitter-follower feedback; biased at I_C = 0.35 A for 350 mA LED current.

Use Value: Tight h_FE tolerance (400–1000) and low V_BE(sat) ≤ 1.10 V enable ±3% current accuracy without trimming resistors.

Equivalent & Alternatives

The following parts are listed as comparable options for similar NPN switching transistor applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
2SC5868(TE12L,F)	V_CEO = 25 V, I_C = 2.0 A, V_CE(sat) ≤ 0.15 V, t_f = 50 ns	Higher voltage/current rating but slower switching; suitable for 24 V systems with lower frequency demands.	Preferred when higher V_CEO margin or continuous I_C > 1.5 A is required; same SC-62 footprint.
MJD127G	V_CEO = 100 V, I_C = 2.0 A, V_CE(sat) ≤ 0.5 V, t_f = 120 ns	Higher breakdown voltage but significantly higher saturation loss and slower switching.	Applicable only where V_CEO > 20 V is mandatory; not recommended for high-frequency or low-loss designs.

Compared with 2SC5819(TE12L,ZF), 2SC5868 offers extended voltage headroom and current capacity at modest speed trade-off, while MJD127G provides high-voltage ruggedness at cost of efficiency and bandwidth-making 2SC5819 optimal for compact, high-efficiency 12–20 V switching nodes.

Availability

2SC5819(TE12L,ZF) is available at Aetrix Electronics and suitable for DC-DC converter power switches, industrial relay drivers, motor control pre-drivers, and LED constant-current sinks requiring stable component supply and consistent parametric performance across production lots.

Supply support for 2SC5819(TE12L,ZF) 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

Toshiba Electronic Devices & Storage Corporation is a Japanese semiconductor manufacturer specializing in discrete devices, power ICs, and memory solutions, with global distribution and automotive-grade reliability validation.

The 2SC5819(TE12L,ZF) belongs to Toshiba's general-purpose bipolar transistor product line, engineered for high-reliability industrial switching applications where predictable gain, low saturation loss, and fast transient response are essential.

FAQ

What is the maximum continuous collector current for 2SC5819(TE12L,ZF) under standard PCB conditions?

The 2SC5819(TE12L,ZF) supports I_C = 1.5 A DC when mounted on an FR4 board (1.6 mm thick, 645 mm² copper area) at T_a = 25°C. Derating is required above 25°C ambient per the transient thermal resistance curve (r_th–t_w) in the official Toshiba datasheet Rev.2006-11-10. Exceeding this rating risks thermal runaway and permanent damage to the 2SC5819(TE12L,ZF).

Does 2SC5819(TE12L,ZF) support lead-free soldering processes?

Yes, the marking "A line" on the 2SC5819(TE12L,ZF) package indicates a lead (Pb)-free finish, compliant with RoHS Directive 2011/65/EU. The device is qualified for standard Pb-free reflow profiles per J-STD-020, with peak temperature ≤ 260°C for ≤ 30 seconds. Always verify latest compliance status via Toshiba's official product page for 2SC5819(TE12L,ZF).

What is the guaranteed minimum DC current gain (h_FE) of 2SC5819(TE12L,ZF) at I_C = 0.15 A?

The 2SC5819(TE12L,ZF) guarantees h_FE ≥ 400 at V_CE = 2 V and I_C = 0.15 A, per Toshiba's Electrical Characteristics table (Rev.2006-11-10, Page 2). This minimum gain applies across the full operating temperature range of −55°C to 100°C, ensuring reliable base drive sizing in industrial environments where 2SC5819(TE12L,ZF) is deployed.

Can 2SC5819(TE12L,ZF) be used in linear amplifier configurations?

No-the 2SC5819(TE12L,ZF) is characterized and rated exclusively for switching operation, with SOA curves, saturation parameters, and switching timing data provided in its datasheet. It lacks guaranteed linearity specs (e.g., distortion, f_T, or h_fe flatness) required for analog amplification. For linear use, select a transistor explicitly specified for small-signal or audio amplifier applications instead of 2SC5819(TE12L,ZF).

What is the safe operating area (SOA) limitation for 2SC5819(TE12L,ZF) during pulsed operation?

The 2SC5819(TE12L,ZF) SOA is defined for single nonrepetitive pulses up to 10 s on FR4 (645 mm² Cu), with maximum I_C decreasing as V_CE increases-for example, 1.5 A at 10 V, 0.5 A at 20 V. Operation beyond these boundaries risks secondary breakdown. Always reference Figure 4 ("Safe Operating Area") in the Toshiba 2SC5819(TE12L,ZF) datasheet for precise derating guidance.

2SC5819(TE12L,ZF) Specifications

Product attributes: Attribute value

Manufacturer:: Toshiba Semiconductor and Storage

Series:: -

Package/Case:: TO-243AA

Packaging:: Box

Product Status:: Active

Transistor Type:: NPN

Current - Collector (Ic) (Max):: 1.5 A

Voltage - Collector Emitter Breakdown (Max):: 20 V

Vce Saturation (Max) @ Ib, Ic:: 120mV @ 10mA, 500mA

Current - Collector Cutoff (Max):: 100nA (ICBO)

DC Current Gain (hFE) (Min) @ Ic, Vce:: 400 @ 150mA, 2V

Power - Max:: 1 W

Frequency - Transition:: -

Operating Temperature:: 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: PW-MINI

2SC5819(TE12L,ZF) FAQ

1.How can I place an order for 2SC5819(TE12L,ZF) through Aetrix?

Please submit a Request for Quotation (RFQ) for 2SC5819(TE12L,ZF) 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 2SC5819(TE12L,ZF) reliable?

The price and inventory of 2SC5819(TE12L,ZF) are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 2SC5819(TE12L,ZF) is usually 5 days.

3.What payment methods are accepted for 2SC5819(TE12L,ZF)?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 2SC5819(TE12L,ZF) transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 2SC5819(TE12L,ZF)?

2SC5819(TE12L,ZF) orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 2SC5819(TE12L,ZF) 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 2SC5819(TE12L,ZF)?

For technical support, including 2SC5819(TE12L,ZF) datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 2SC5819(TE12L,ZF) requirements.

6.How does Aetrix verify that 2SC5819(TE12L,ZF) is sourced from the original manufacturer or authorized distributors?

All 2SC5819(TE12L,ZF) 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 2SC5819(TE12L,ZF) meets industry standards.

7.What is the process for return or replacement of 2SC5819(TE12L,ZF)?

All 2SC5819(TE12L,ZF) units undergo pre-shipment inspection (PSI). If there is an issue with 2SC5819(TE12L,ZF), 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 2SC5819(TE12L,ZF) part is unused and in its original packaging.

Return procedure for 2SC5819(TE12L,ZF):

1.Submit a request within 90 days.

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

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