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Home > Products > Discrete Semiconductor Products > Transistors > Special Purpose

STMicroelectronics STC08DE150HP

Name: STC08DE150HP
Brand: STMicroelectronics
SKU: STC08DE150HP
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STC08DE150HP

Manufacturer:: STMicroelectronics

Category:: Special Purpose

Package:: TO-247-4

Datasheet:: STC08DE150HP.pdf

Description:: TRANS SW BIPO 1500V 8A TO247-4

Quantity:: RFQ Add To RFQ list

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Inventory:5,426

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Product details

Overview

STC08DE150HP from STMicroelectronics is a hybrid emitter-switched bipolar transistor (ESBT®) designed for high-voltage, medium-current switching in auxiliary flyback SMPS fed from three-phase mains. It delivers 1500 V collector-source blocking voltage, 8 A continuous collector current, 0.075 Ω equivalent ON resistance, and supports up to 150 kHz switching with RG = 47 Ω drive.

For engineers reviewing the STC08DE150HP datasheet, STC08DE150HP pinout, STC08DE150HP application, or STC08DE150HP equivalent, key selection criteria include RBSOA robustness at 1500 V, low Ciss (750 pF), fast storage/fall times (526 ns / 8.5 ns at hFE = 5), and gate-driven base control enabling simplified high-voltage BJT operation.

Technical Context

The STC08DE150HP integrates a high-voltage bipolar transistor with a low-voltage MOSFET in a single TO-247-4L HP package, where the MOSFET controls the bipolar base via integrated gate-drive path. Its ESBT topology eliminates external base drive complexity while preserving BJT conduction efficiency and SOA margin.

It operates with VGS(th) = 1.5–3.0 V, requires VGS = 10 V for full turn-on, and exhibits VCS(ON) = 0.6 V at IC = 8 A/IB = 1.6 A. Dynamic clamping capability enables snubberless turn-off up to 1500 V with RG = 47 Ω and hFE = 5.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CS(SS)	1500 V - Maximum DC collector-source blocking voltage without breakdown
I_C	8 A - Continuous collector current rating at T_c ≤ 25 °C
R_CS(ON)	0.075 Ω - Equivalent ON-state resistance determining conduction loss at rated current
C_iss	750 pF - Input capacitance at V_CS = 25 V, directly impacting gate drive power and switching speed
t_s / t_f	526 ns / 8.5 ns - Storage and fall time under inductive load (hFE = 5, RG = 47 Ω), defining minimum practical switching period
R_thJC	2.4 °C/W - Junction-to-case thermal resistance, critical for heatsink sizing in 42 W P_tot operation
V_CS(ON)	0.6 V - Collector-source saturation voltage at IC = 8 A, IB = 1.6 A, setting low conduction loss

Pinout & Package

Package: TO-247-4L HP - 4-pin through-hole power package with isolated source tab, optimized for high-voltage isolation and thermal dissipation (R_thJC = 2.4 °C/W).

Pin/Terminal	Circuit Role	Design Meaning
Pin 1 (Gate)	MOSFET gate input	Controls base current of integrated BJT via internal MOSFET; referenced to source
Pin 2 (Collector)	High-voltage output node	Carries main switched current up to 1500 V; electrically isolated from case
Pin 3 (Source)	MOSFET source / BJT emitter reference	Common return for gate drive and emitter; tied to PCB ground plane
Pin 4 (Base)	Bipolar base terminal	Internally driven by MOSFET; accessible for external bias or sensing in advanced configurations

Key Features

Feature	Design Value
Squared RBSOA up to 1500 V	Enables reliable operation under inductive switching stress without secondary breakdown limitations typical of standard BJTs
Low C_iss (750 pF) with RG = 47 Ω drive	Reduces gate drive power and enables stable 150 kHz operation in flyback topologies
Integrated ESBT structure	Eliminates need for external base drive circuitry while retaining BJT conduction efficiency and SOA margin
V_CS(ON) = 0.6 V at 8 A	Minimizes conduction losses in auxiliary SMPS where efficiency and thermal management are critical

Applications

Industrial Three-Phase Auxiliary Power Supply

UPS Control Board Auxiliary SMPS

Use Scenario: Provides isolated 12–24 V bias supply for gate drivers and controllers in industrial motor drives powered from 400 VAC three-phase mains.

IC Role / Device Role / Timing Role: High-voltage single-switch flyback primary-side switch operating at 100–150 kHz.

Use Value: 1500 V RBSOA withstands line transients on 400 VAC-derived DC bus; low V_CS(ON) reduces heat sink size in space-constrained enclosures.

Use Scenario: Generates standby power for microcontroller and communication ICs in online UPS systems during battery backup mode.

IC Role / Device Role / Timing Role: Primary-side switch in discontinuous conduction mode (DCM) flyback converter.

Use Value: Fast ts/tf (526 ns/8.5 ns) ensures minimal dead-time loss; 0.075 Ω R_CS(ON) maintains >85% efficiency at light loads.

Energy Metering System HV Bias Supply

Three-Phase EVSE Control Module Power

Use Scenario: Supplies isolated logic power for metrology ICs and isolation amplifiers in DIN-rail energy meters connected to 400/690 VAC distribution networks.

IC Role / Device Role / Timing Role: Fixed-frequency flyback switch handling 1500 V transient surges per IEC 61000-4-5.

Use Value: Squared RBSOA guarantees no second breakdown during surge events; TO-247-4L HP package meets creepage/clearance requirements.

Use Scenario: Powers MCU, CAN transceiver, and relay drivers in Level 2 AC EV charging stations with three-phase input.

IC Role / Device Role / Timing Role: Primary-side switch in auxiliary flyback supplying 5 V/3.3 V rails.

Use Value: Gate-driven base control simplifies compliance with IEC 61851 safety isolation; 8 A I_C headroom supports future feature expansion.

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-voltage flyback switch applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
STW20NK50Z	500 V, 20 A superjunction MOSFET; higher V_DS, lower I_D rating, no integrated base drive	Requires external gate driver and base resistor network; unsuitable above 600 V DC bus	Select only for <600 V systems where faster switching and lower Q_g outweigh SOA limitations
IXTH30N60P	600 V, 30 A planar MOSFET; lacks ESBT's 1500 V RBSOA and integrated base control	Cannot replace STC08DE150HP in 1500 V clamp or three-phase auxiliary designs without redesign	Consider only for lower-voltage flyback or forward converters where SOA margin is less critical

Compared with STW20NK50Z and IXTH30N60P, the STC08DE150HP uniquely combines 1500 V RBSOA, gate-driven bipolar conduction, and low 0.075 Ω R_CS(ON), making it irreplaceable in three-phase auxiliary SMPS requiring snubberless operation and high transient immunity.

Availability

STC08DE150HP is available at Aetrix Electronics and suitable for industrial motor drives, UPS control boards, energy metering systems, and EVSE control modules requiring stable component supply across extended product lifecycles.

Supply support for STC08DE150HP 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, Switzerland, designing and manufacturing analog, digital, and mixed-signal ICs for automotive, industrial, and power applications.

The STC08DE150HP belongs to ST's ESBT® family, engineered specifically to replace discrete BJT+MOSFET combinations in high-voltage auxiliary power supplies where SOA, efficiency, and layout simplicity are critical.

FAQ

What is the maximum recommended gate resistor value for reliable switching?

The datasheet specifies RG = 47 Ω for measured switching times and dynamic voltage ratings. Using RG > 47 Ω increases storage time and V_CSW, risking overvoltage during turn-off. For 150 kHz operation, RG = 33–47 Ω is optimal to balance EMI and SOA margin without exceeding t_s = 884 ns at hFE = 10.

Can STC08DE150HP be used in hard-switched forward converters?

No - its ESBT architecture and RBSOA are optimized for flyback operation with unidirectional current and natural zero-current turn-off. Forward topology subjects it to simultaneous high V_CS and I_C during turn-on, violating its safe operating area. It is validated only for flyback and auxiliary SMPS applications.

Is the Base pin (Pin 4) intended for external connection?

Yes - Pin 4 provides direct access to the BJT base for optional external bias, current sensing, or active clamp feedback. However, normal operation uses internal MOSFET drive; external connection is only required for specialized control schemes like adaptive base drive or SOA monitoring.

Does STC08DE150HP support 1700 V DC bus applications?

No - its absolute maximum V_CS(SS) is 1500 V. Operation above this risks irreversible avalanche failure. For 1700 V systems, derating is insufficient; a higher-voltage device such as STGW30H170DF (1700 V IGBT) or discrete SiC solutions must be used instead.

STC08DE150HP Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: ESBT®

Package/Case:: TO-247-4

Packaging:: Tube

Product Status:: Obsolete

Transistor Type:: NPN - Emitter Switched Bipolar

Applications:: Gate Driver

Voltage - Rated:: 1500V (1.5kV)

Current Rating (Amps):: 8A

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-247-4L

STC08DE150HP FAQ

1.How can I place an order for STC08DE150HP through Aetrix?

Please submit a Request for Quotation (RFQ) for STC08DE150HP 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 STC08DE150HP reliable?

The price and inventory of STC08DE150HP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STC08DE150HP is usually 5 days.

3.What payment methods are accepted for STC08DE150HP?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STC08DE150HP transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STC08DE150HP?

STC08DE150HP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STC08DE150HP 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 STC08DE150HP?

For technical support, including STC08DE150HP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STC08DE150HP requirements.

6.How does Aetrix verify that STC08DE150HP is sourced from the original manufacturer or authorized distributors?

All STC08DE150HP 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 STC08DE150HP meets industry standards.

7.What is the process for return or replacement of STC08DE150HP?

All STC08DE150HP units undergo pre-shipment inspection (PSI). If there is an issue with STC08DE150HP, 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 STC08DE150HP part is unused and in its original packaging.

Return procedure for STC08DE150HP:

1.Submit a request within 90 days.

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

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