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

STMicroelectronics STI13005-1

Name: STI13005-1
Brand: STMicroelectronics
SKU: STI13005-1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STI13005-1

Manufacturer:: STMicroelectronics

Category:: Single Bipolar Transistors

Package:: TO-251-3 Short Leads, IPAK, TO-251AA

Datasheet:: STI13005-1.pdf

Description:: TRANS NPN 400V 3A TO251

Quantity:: RFQ Add To RFQ list

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Inventory:2,866

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Product details

Overview

STI13005-1 from STMicroelectronics is a high-voltage fast-switching NPN power transistor in IPAK (TO-251) package, rated for V_CES = 700 V, I_C = 3 A, and P_TOT = 30 W at T_C = 25 °C, with t_s = 0.8 µs and t_f = 150 ns under inductive load - used in AC-DC switch-mode power supplies.

For engineers reviewing the STI13005-1 datasheet, STI13005-1 pinout, STI13005-1 application, or STI13005-1 equivalent, key selection factors include its 700 V blocking capability, cellular emitter structure enabling wide RBSOA, opposite-pin IPAK layout versus standard, and verified switching performance in 125 V/50 mH inductive test circuits.

Technical Context

This device employs high-voltage multi-epitaxial planar technology with planar edge termination to simultaneously achieve high breakdown voltage and fast switching. Its cellular emitter design enhances dynamic consistency while preserving rugged reverse-biased safe operating area (RBSOA).

The transistor exhibits low parameter spread across production lots, with V_CEO(sus) = 400 V at I_C = 10 mA and V_CE(sat) = 0.6 V at I_C = 2 A / I_B = 500 mA - critical for minimizing conduction loss in high-frequency SMPS primary switches.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CES	700 V - enables direct use in 380 VAC rectified bus designs without series stacking
I_C	3 A continuous - supports up to ~150 W output in flyback or forward converters
t_s (inductive)	0.8 µs - reduces storage-time-related switching loss during turn-off in hard-switched topologies
R_thJC	4.2 °C/W max - allows 30 W dissipation with ≤126 °C case-to-junction rise at full load
V_CE(sat)	0.6 V @ 2 A / 500 mA - limits conduction loss to <1.2 W at rated current, improving efficiency
h_FE	10–24 @ I_C = 0.425–2 A - supports stable base drive design across operating range

Pinout & Package

STI13005-1 uses the IPAK (TO-251) package with non-standard pinout: Pin 1 = Emitter, Pin 2 = Base, Pin 3 = Collector - opposite to conventional IPAK orientation, requiring PCB layout verification.

Pin/Terminal	Circuit Role	Design Meaning
Pin 1	Emitter	Main current return path; tied to source of drive circuitry and heatsink ground plane
Pin 2	Base	Control input; requires ≥500 mA peak drive for full saturation at 2 A collector current
Pin 3	Collector	High-voltage output node; connected to primary winding and snubber network in SMPS

Key Features

Feature	Design Value
Cellular emitter structure	Enables uniform current distribution and consistent dynamic parameters across devices
Planar edge termination	Maintains wide RBSOA while supporting 700 V V_CES, critical for overvoltage robustness
Opposite-pin IPAK layout	Requires dedicated footprint; prevents accidental substitution with standard IPAK transistors
Low t_f (150 ns)	Reduces turn-off energy loss in 50–100 kHz SMPS, directly improving thermal margin

Applications

AC-DC Flyback Converter

Offline LED Driver

Use Scenario: 85–265 VAC input, 12–24 VDC isolated output, 30–60 W power level.

IC Role / Device Role / Timing Role: Primary-side NPN switch controlling energy transfer via transformer primary winding.

Use Value: 700 V V_CES accommodates reflected voltage spikes and line surges without clamping overhead.

Use Scenario: Constant-current driver for high-brightness LED strings in commercial lighting.

IC Role / Device Role / Timing Role: High-voltage switching element in primary-side controlled quasi-resonant topology.

Use Value: Fast t_s/t_f minimizes switching loss at 65–100 kHz, enabling compact heatsink design.

Industrial Power Adapter

UPS Inverter Stage

Use Scenario: 24 V/3 A regulated output for PLC I/O modules with wide input range.

IC Role / Device Role / Timing Role: Main switching transistor in forward converter with active clamp reset.

Use Value: Wide RBSOA ensures reliability under short-circuit and overload transient conditions.

Use Scenario: DC-AC stage converting 350 VDC bus to 230 VAC for backup power systems.

IC Role / Device Role / Timing Role: High-voltage half-bridge switch in modified sine-wave or SPWM inverter.

Use Value: Low V_CE(sat) and high I_CM = 6 A support surge current handling during motor startup loads.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STW13NK60Z	600 V V_DSS, 13 A, MOSFET - lower gate drive complexity but higher R_DS(on) at high T_J	Replaces BJT with MOSFET gate drive; requires no base resistor network	Prefer when gate drive simplicity and zero gate current outweigh need for 700 V rating
BU508A	1500 V V_CEO, 10 A, slower t_f > 1 µs - legacy planar BJT with wider SOA but poor high-frequency efficiency	Suitable for lower-frequency (<30 kHz), high-surge industrial SMPS	Choose only when absolute voltage margin >1 kV is mandatory and switching loss is secondary

Compared with STW13NK60Z and BU508A, STI13005-1 uniquely balances 700 V rating, sub-microsecond switching, and IPAK thermal performance - making it optimal for compact, 50–100 kHz AC-DC converters where both voltage headroom and efficiency matter.

Availability

STI13005-1 is available at Aetrix Electronics and suitable for switch-mode power supplies, offline LED drivers, and industrial power adapters requiring stable component supply and verified high-voltage switching behavior.

Supply support for STI13005-1 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, designing and manufacturing analog, digital, and mixed-signal ICs and discrete power devices.

The STI13005-1 belongs to ST's high-voltage bipolar transistor product line, engineered specifically for reliable, efficient switching in cost-sensitive AC-DC power conversion systems up to 150 W.

FAQ

What is the pin configuration of STI13005-1?

STI13005-1 uses the IPAK (TO-251) package with reversed pinout: Pin 1 is Emitter, Pin 2 is Base, Pin 3 is Collector - opposite to standard IPAK orientation. This layout is explicitly documented in Figure 1 and Table 1 of Doc ID 17147 Rev 1 and must be verified in PCB layout to prevent misconnection.

Can STI13005-1 replace STP13NK60Z in a 600 V SMPS design?

No - STP13NK60Z is a 600 V N-channel MOSFET with different drive requirements, conduction mechanism, and thermal profile. STI13005-1 is an NPN BJT requiring sustained base current, whereas the MOSFET uses voltage-controlled gate drive. Direct substitution would require redesign of gate/base drive, feedback, and protection circuitry.

What is the maximum recommended case temperature for continuous operation?

The maximum case temperature for continuous operation is derived from R_thJC = 4.2 °C/W and T_J(max) = 150 °C. At full 30 W dissipation, T_C must not exceed 126 °C to maintain junction safety margin. For reliable long-term operation, ST recommends limiting T_C to ≤110 °C under full load per derating curve in Figure 3.

Does STI13005-1 have automotive qualification?

No - STI13005-1 is not specified as automotive-grade per ST's documentation. It carries no AEC-Q101 stress test certification, and the datasheet explicitly states that ST products not marked "automotive grade" are intended for industrial/commercial use only, with automotive application use at the user's own risk.

STI13005-1 Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: TO-251-3 Short Leads, IPAK, TO-251AA

Packaging:: Tube

Product Status:: Obsolete

Transistor Type:: NPN

Current - Collector (Ic) (Max):: 3 A

Voltage - Collector Emitter Breakdown (Max):: 400 V

Vce Saturation (Max) @ Ib, Ic:: 5V @ 750mA, 3A

Current - Collector Cutoff (Max):: 1mA

DC Current Gain (hFE) (Min) @ Ic, Vce:: 8 @ 2A, 5V

Power - Max:: 30 W

Frequency - Transition:: -

Operating Temperature:: 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-251 (IPAK)

STI13005-1 FAQ

1.How can I place an order for STI13005-1 through Aetrix?

Please submit a Request for Quotation (RFQ) for STI13005-1 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 STI13005-1 reliable?

The price and inventory of STI13005-1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STI13005-1 is usually 5 days.

3.What payment methods are accepted for STI13005-1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STI13005-1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STI13005-1?

STI13005-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STI13005-1 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 STI13005-1?

For technical support, including STI13005-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STI13005-1 requirements.

6.How does Aetrix verify that STI13005-1 is sourced from the original manufacturer or authorized distributors?

All STI13005-1 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 STI13005-1 meets industry standards.

7.What is the process for return or replacement of STI13005-1?

All STI13005-1 units undergo pre-shipment inspection (PSI). If there is an issue with STI13005-1, 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 STI13005-1 part is unused and in its original packaging.

Return procedure for STI13005-1:

1.Submit a request within 90 days.

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

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