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

STMicroelectronics STC04IE170HP

Name: STC04IE170HP
Brand: STMicroelectronics
SKU: STC04IE170HP
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STC04IE170HP

Manufacturer:: STMicroelectronics

Category:: Special Purpose

Package:: TO-247-4

Datasheet:: STC04IE170HP.pdf

Description:: TRANS ESBT 1700V 4A TO247-4LHP

Quantity:: RFQ Add To RFQ list

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Inventory:4,569

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Product details

Overview

STC04IE170HP from STMicroelectronics is a monolithic emitter-switched bipolar transistor (ESBT®) designed for high-voltage, high-frequency auxiliary SMPS in three-phase mains systems. It delivers 1700 V collector-source blocking voltage, 4 A continuous collector current, 0.17 Ω equivalent ON resistance, and operates up to 150 kHz with squared RBSOA. Its TO-247-4L HP package supports gate-driven topologies requiring robust dynamic voltage handling.

For engineers reviewing the STC04IE170HP datasheet, STC04IE170HP pinout, STC04IE170HP application, or STC04IE170HP equivalent, key selection criteria include its 1700 V V_CS(SS), 0.7 V V_CS(ON) at 4 A, 510 pF C_iss at 25 V, 770 ns storage time with R_G = 47 Ω, and 2.5 °C/W R_thJC - all critical for snubberless flyback and resonant converter design.

Technical Context

The STC04IE170HP integrates a high-voltage bipolar transistor and low-voltage MOSFET in cascode configuration, enabling fast switching without external snubbers. Its squared reverse-biased safe operating area (RBSOA) sustains 1700 V at full 4 A current during turn-off transients.

Gate drive is optimized for 10 V logic-level control with ±17 V V_GS rating and only 3.9 nC Q_GS(tot); base-emitter conduction is controlled via internal current mirroring, yielding h_FE of 4–11 depending on operating point and temperature.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CS(SS)	1700 V - Enables direct use in 1200 V DC bus auxiliary supplies without voltage derating.
I_C	4 A continuous - Supports >100 W auxiliary power stages in industrial three-phase inverters.
R_CS(ON)	0.17 Ω - Reduces conduction loss to <1.4 W at 4 A, improving thermal margin in TO-247-4L HP.
C_iss	510 pF at 25 V - Enables clean 150 kHz switching with 47 Ω gate resistor and minimal driver power.
t_s	770 ns storage time - Limits cross-conduction loss in hard-switched topologies with V_Clamp = 1360 V.
R_thJC	2.5 °C/W - Allows 50 W P_tot dissipation at T_C ≤ 25°C, supporting compact heatsink designs.
V_CS(ON)	0.7 V at I_C = 4 A - Ensures low saturation loss comparable to high-performance IGBTs in same voltage class.

Pinout & Package

STC04IE170HP uses the TO-247-4L HP package: 4-terminal, isolated tab, high-power thermally enhanced variant with standardized leadframe geometry per ST's mechanical drawing 7908765A.

Pin/Terminal	Circuit Role	Design Meaning
Collector (C)	High-voltage output node	Connected to 1700 V DC bus; carries full load current and withstands dynamic dV/dt during turn-off.
Emitter (E)	Power return path	Low-inductance connection to source of internal MOSFET; referenced to system ground in gate-driven topology.
Base (B)	Current-controlled input	Drives internal bipolar section; requires precise 0.8 A peak base current at 4 A I_C for full saturation.
Gate (G)	Logic-level control input	Standard MOSFET gate interface; 10 V threshold enables compatibility with 3.3 V/5 V microcontrollers via level-shifting.

Key Features

Feature	Design Value
Squared RBSOA up to 1700 V	Eliminates need for external snubbers in flyback and resonant converters operating near voltage limit.
Very low C_iss (510 pF)	Reduces gate drive power and EMI generation at 150 kHz, easing compliance with CISPR-32 Class B.
0.17 Ω R_CS(ON)	Enables >92% efficiency in 24 V/4 A auxiliary supplies at full load without forced air cooling.
TO-247-4L HP package	Provides 2.5 °C/W junction-to-case thermal resistance and creepage/clearance compliant with IEC 61800-5-1.
1700 V V_CS(SS) rating	Supports direct integration into 690 V AC three-phase rectified bus (≈975 V DC) with 75% voltage margin.

Applications

Industrial Three-Phase Inverter Auxiliary Supply

UPS Hold-Up Power Stage

Use Scenario: Provides isolated 24 V/3 A auxiliary power for gate drivers and control logic in 690 V AC variable frequency drives.

IC Role / Device Role / Timing Role: High-voltage switch in self-oscillating flyback topology, operating at 100–150 kHz with no snubber.

Use Value: 1700 V blocking capability eliminates series stacking; 0.7 V V_CS(ON) reduces conduction loss by 35% vs. standard 1200 V IGBTs.

Use Scenario: Powers hold-up circuitry during AC mains interruption in online double-conversion UPS systems with 800 V DC link.

IC Role / Device Role / Timing Role: Primary-side switch in clamp-forward converter delivering 12 V/5 A to supercapacitor charging circuit.

Use Value: Squared RBSOA ensures reliable operation at 1360 V clamp voltage without secondary breakdown risk.

EV Charging Station Control Power

Renewable Energy Grid-Tie Converter Bias Supply

Use Scenario: Generates 15 V bias for SiC MOSFET gate drivers in 1000 V DC EV fast-charging modules.

IC Role / Device Role / Timing Role: Cascode-configured ESBT acting as high-side switch in resonant LLC auxiliary supply.

Use Value: 510 pF C_iss and 3.9 nC Q_GS enable clean zero-voltage switching transitions at 120 kHz.

Use Scenario: Supplies 24 V control power for DSP and isolation amplifiers in 1500 V DC string inverters used in solar farms.

IC Role / Device Role / Timing Role: Main switch in active-clamp forward converter operating at 130 kHz with regulated output.

Use Value: 2.5 °C/W R_thJC allows natural convection cooling in outdoor-rated enclosures rated to 60°C ambient.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STGW40H65DFB	650 V IGBT with co-packaged diode; higher V_CE(sat) (1.8 V), lower V_BR.	Requires series stacking for 1700 V operation; unsuitable for snubberless designs.	Select only if system voltage ≤ 600 V DC and diode recovery is critical.
IXTH30N60P	600 V N-channel MOSFET; no integrated bipolar stage; R_DS(on) = 0.18 Ω but V_DSS insufficient.	Cannot replace STC04IE170HP directly in 1700 V topologies without external voltage clamping.	Use only in lower-voltage auxiliary supplies where 600 V rating is sufficient.

Compared with STGW40H65DFB and IXTH30N60P, STC04IE170HP uniquely combines 1700 V blocking, cascode-integrated drive simplicity, and snubberless RBSOA - making it irreplaceable in high-voltage auxiliary SMPS where voltage margin and layout simplicity are mandatory.

Availability

STC04IE170HP is available at Aetrix Electronics and suitable for industrial three-phase inverters, UPS hold-up power stages, and EV charging station control power supplies requiring stable component supply across multi-year production cycles.

Supply support for STC04IE170HP 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 ESBT® product line targets high-efficiency, high-voltage auxiliary power conversion in industrial motor drives and grid-connected systems, emphasizing snubberless operation and simplified gate drive.

FAQ

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

The datasheet specifies 47 Ω as the test condition for switching time measurements. Using >68 Ω increases storage time beyond 1 µs and risks excessive V_CS(dyn) overshoot above 5.4 V. For 150 kHz operation, 33–47 Ω is optimal to balance EMI and loss.

Can STC04IE170HP be used in hard-switched forward converters?

Yes - its squared RBSOA and 1700 V V_CSW rating allow snubberless operation in forward converters with clamp voltages up to 1360 V. However, peak base current must reach 0.8 A at full load to maintain h_FE ≥ 5 and avoid second breakdown.

Is the TO-247-4L HP package RoHS-compliant and halogen-free?

Yes - ST certifies this device as ECOPACK®2 compliant: lead-free, RoHS-compliant, and halogen-free per IEC 61249-2-21. The "HP" suffix denotes high-power variant with enhanced thermal pad plating for improved solder joint reliability.

Does STC04IE170HP require negative gate voltage for turn-off?

No - the device turns off fully with 0 V gate voltage due to its internal cascode structure. Applying –5 V is unnecessary and not specified in the absolute maximum ratings; V_GS range is strictly ±17 V, with 0 V being the defined off-state.

STC04IE170HP Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: TO-247-4

Packaging:: Tube

Product Status:: Obsolete

Transistor Type:: NPN - Emitter Switched Bipolar

Applications:: Gate Driver

Voltage - Rated:: 1700V (1.7kV)

Current Rating (Amps):: 4A

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-247-4L

STC04IE170HP FAQ

1.How can I place an order for STC04IE170HP through Aetrix?

Please submit a Request for Quotation (RFQ) for STC04IE170HP 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 STC04IE170HP reliable?

The price and inventory of STC04IE170HP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STC04IE170HP is usually 5 days.

3.What payment methods are accepted for STC04IE170HP?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STC04IE170HP transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STC04IE170HP?

STC04IE170HP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STC04IE170HP 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 STC04IE170HP?

For technical support, including STC04IE170HP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STC04IE170HP requirements.

6.How does Aetrix verify that STC04IE170HP is sourced from the original manufacturer or authorized distributors?

All STC04IE170HP 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 STC04IE170HP meets industry standards.

7.What is the process for return or replacement of STC04IE170HP?

All STC04IE170HP units undergo pre-shipment inspection (PSI). If there is an issue with STC04IE170HP, 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 STC04IE170HP part is unused and in its original packaging.

Return procedure for STC04IE170HP:

1.Submit a request within 90 days.

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

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