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Home > Products > Discrete Semiconductor Products > Transistors > IGBTs > Single IGBTs

STMicroelectronics STGB20N40LZ

Name: STGB20N40LZ
Brand: STMicroelectronics
SKU: STGB20N40LZ
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STGB20N40LZ

Manufacturer:: STMicroelectronics

Category:: Single IGBTs

Package:: TO-263-3, D2PAK (2 Leads + Tab), TO-263AB

Datasheet:: STGB20N40LZ.pdf

Description:: IGBT 390V 25A 150W D2PAK

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Product details

Overview

STGB20N40LZ from STMicroelectronics is an AEC-Q101-qualified automotive-grade 390 V internally clamped IGBT in D²PAK (TO-263) package, designed specifically for pencil coil electronic ignition drivers. It features built-in gate-collector and gate-emitter Zener clamping (V_GE(clamped) = 12–16 V, V_CES(clamped) = 390 V), logic-level gate drive (V_GE(th) = 1.5–2.5 V), low saturation voltage (V_CE(sat) = 1.5–1.8 V @ 10 A, 175 °C), and high single-pulse energy rating (E_SCIS = 300 mJ @ 25 °C).

For engineers reviewing the STGB20N40LZ datasheet, STGB20N40LZ pinout, STGB20N40LZ application, or STGB20N40LZ equivalent, key selection criteria include clamped breakdown robustness, gate ESD immunity (8 kV HBM), thermal resistance (R_thj-case = 1.0 °C/W), pulsed current capability (I_CP = 40 A), and automotive qualification compliance.

Technical Context

This IGBT integrates PowerMESH™ vertical structure with monolithically embedded Zener diodes across gate-collector and gate-emitter terminals to provide intrinsic overvoltage protection during inductive switching transients. Its clamped V_CES of 390 V enables direct replacement of discrete snubber circuits in 12 V automotive ignition systems.

The device operates with logic-compatible gate drive (V_GE(th) as low as 0.85 V at 175 °C) and delivers stable V_CE(sat) performance across –40 °C to 175 °C junction temperature range. Gate resistance (R_G = 100 Ω) and gate-emitter resistance (R_GE = 11–22 kΩ) are integrated to damp oscillation and suppress false triggering.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CES(clamped)	390 V - Internally limits collector-emitter voltage during inductive turn-off, eliminating need for external clamp diode in ignition coil drivers.
V_GE(th)	1.5–2.5 V - Enables direct drive from 3.3 V/5 V microcontrollers without level-shifting, reducing BOM count in ECU designs.
V_CE(sat)	1.5–1.8 V @ 10 A, 175 °C - Minimizes conduction loss and thermal stress in high-duty-cycle ignition pulses.
E_SCIS	300 mJ @ 25 °C - Supports reliable single-pulse energy handling in pencil coil applications with L = 3 mH, V_CC = 50 V.
R_thj-case	1.0 °C/W - Enables efficient heatsinking via PCB copper pour or small external heatsink in space-constrained engine compartments.
ESD Rating	8 kV HBM - Ensures robustness against assembly-line electrostatic discharge during manufacturing and service.
I_CP	40 A - Sustains peak coil current surges during cold-start conditions without latch-up or secondary breakdown.

Pinout & Package

STGB20N40LZ is housed in a surface-mount D²PAK (TO-263) package with three terminals: Collector (Tab), Emitter (Pin 3), and Gate (Pin 1). The exposed metal tab serves as the collector connection and provides primary thermal path to PCB.

Pin/Terminal	Circuit Role	Design Meaning
Tab (Collector)	Main power output terminal	Electrically and thermally connected to internal IGBT collector; requires soldered thermal pad on PCB for R_thj-case = 1.0 °C/W performance.
Pin 1 (Gate)	Control input	Logic-level compatible; integrated R_G = 100 Ω suppresses ringing; gate-emitter Zener clamps transient spikes to ≤16 V.
Pin 3 (Emitter)	Power return and reference node	Serves as common source for gate drive loop; must be routed with low-inductance path to minimize switching noise coupling.

Key Features

Feature	Design Value
AEC-Q101 qualification	Validated for automotive underhood operation (–40 °C to 175 °C), including temperature cycling, humidity, and mechanical shock tests.
Integrated gate-emitter Zener	Clamps V_GE to 12–16 V, preventing gate oxide damage during load dump or inductive kickback events.
Low V_CE(sat) at high temperature	1.8 V max @ 10 A, 175 °C ensures stable power dissipation and predictable timing in hot-engine conditions.
High ESCIS energy rating	300 mJ at 25 °C supports repeated ignition firing without thermal runaway in short-circuit fault scenarios.
Logic-level gate threshold	V_GE(th) down to 0.85 V at 175 °C allows reliable turn-on even with degraded MCU output drive under thermal stress.

Applications

Automotive Pencil Coil Driver

Engine Control Unit (ECU) Output Stage

Use Scenario: Driving individual ignition coils in distributorless ignition systems (DIS) for gasoline engines.

IC Role / Device Role / Timing Role: High-speed, high-energy switch controlling primary coil current buildup and collapse to generate spark timing.

Use Value: Internal clamping eliminates external TVS diodes; low V_CE(sat) reduces heat generation during dwell time; AEC-Q101 ensures reliability over 15-year vehicle lifetime.

Use Scenario: Final-stage power switch in modular ECUs managing multiple cylinder ignition sequences.

IC Role / Device Role / Timing Role: Precision-controlled IGBT delivering µs-level accurate spark timing synchronized to crankshaft position sensor signals.

Use Value: Fast switching (t_d(off) = 4.3 µs, t_f = 1.5 µs) enables narrow dwell windows; integrated R_GE stabilizes gate bias during EMI-rich engine bay operation.

Two-Stroke Ignition Module

Motorcycle Ignition Controller

Use Scenario: Compact ignition modules for marine outboard engines and small displacement two-stroke powerplants.

IC Role / Device Role / Timing Role: Primary-side switch regulating coil energy storage and release in CDI-style circuits.

Use Value: 390 V clamping withstands high back-EMF from fast-decaying coil currents; D²PAK footprint supports high-current PCB routing in constrained enclosures.

Use Scenario: Aftermarket and OEM motorcycle ignition control units requiring high-reliability spark generation.

IC Role / Device Role / Timing Role: Fault-tolerant ignition driver operating across wide battery voltage range (6–16 V) and ambient temperatures.

Use Value: ESD-hardened gate survives roadside ESD events; 175 °C max T_j rating accommodates sealed housing thermal accumulation near exhaust manifolds.

Equivalent & Alternatives

The following parts are listed as comparable options for similar IGBT ignition driver applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
STGD20N40LZ	DPAK (TO-252) package; higher R_thj-case = 1.2 °C/W; identical electrical specs and AEC-Q101 qualification.	Lower power density; suited for lower-current or space-relaxed ignition modules where thermal mass is less critical.	Select when board layout constraints favor smaller footprint or when lower cost per unit outweighs thermal performance needs.
IRGB20B60KD1	600 V rated; no internal gate-emitter Zener; higher V_CE(sat) = 2.2 V @ 10 A; not AEC-Q101 qualified.	Requires external gate protection circuitry; suitable only for non-automotive or industrial ignition where qualification is not mandated.	Choose only for legacy industrial systems where 600 V margin is required and automotive qualification is unnecessary.

Compared with STGD20N40LZ, STGB20N40LZ offers superior thermal performance (1.0 vs. 1.2 °C/W) and higher current handling in same voltage class; versus IRGB20B60KD1, it provides integrated protection, automotive qualification, and lower conduction loss-critical for modern engine management reliability.

Availability

STGB20N40LZ is available at Aetrix Electronics and suitable for automotive ignition systems, engine control units, and two-stroke/motorcycle ignition modules requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant sourcing.

Supply support for STGB20N40LZ 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, specializing in automotive, industrial, and power management solutions with broad IP portfolio and vertical manufacturing capabilities.

This device belongs to ST's Automotive Power IGBT family, engineered specifically for high-reliability, high-energy switching in engine management systems-emphasizing integrated protection, thermal resilience, and qualification rigor for under-hood deployment.

FAQ

What is the maximum allowable gate-emitter voltage for STGB20N40LZ?

The absolute maximum gate-emitter voltage is ±20 V, but the device incorporates an integrated Zener diode that clamps V_GE to 12–16 V under overvoltage conditions. This clamping action protects the gate oxide during inductive transients and eliminates need for external gate protection components in standard ignition designs.

Can STGB20N40LZ be driven directly by a 3.3 V microcontroller GPIO?

Yes-its gate threshold voltage ranges from 1.5 V to 2.5 V at 25 °C and remains functional down to 0.85 V at 175 °C, enabling reliable turn-on with 3.3 V logic. However, full enhancement and low V_CE(sat) require ≥4.5 V gate drive; use of a dedicated gate driver IC is recommended for optimal switching speed and noise immunity.

How does the internal V_CES clamping function during coil turn-off?

During turn-off, the collapsing magnetic field in the ignition coil induces high dI/dt, causing V_CE to rise rapidly. The internal collector-emitter Zener structure activates at ~390 V, diverting excess energy into controlled avalanche, limiting voltage overshoot and protecting downstream circuitry without external snubbers or TVS diodes.

Is STGB20N40LZ suitable for use in safety-critical ignition systems?

No-ST explicitly states this device is not designed or authorized for safety-critical applications such as life-supporting or active implanted medical devices. While AEC-Q101 qualified for automotive use, it lacks ASIL certification or functional safety documentation required for ISO 26262-compliant safety mechanisms in modern ADAS or autonomous vehicle platforms.

STGB20N40LZ Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: PowerMESH™

Package/Case:: TO-263-3, D2PAK (2 Leads + Tab), TO-263AB

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

IGBT Type:: -

Voltage - Collector Emitter Breakdown (Max):: 390 V

Current - Collector (Ic) (Max):: 25 A

Current - Collector Pulsed (Icm):: 40 A

Vce(on) (Max) @ Vge, Ic:: 1.6V @ 4V, 6A

Power - Max:: 150 W

Switching Energy:: -

Input Type:: Logic

Gate Charge:: 24 nC

Td (on/off) @ 25°C:: 700ns/4.3µs

Test Condition:: 300V, 10A, 1kOhm, 5V

Reverse Recovery Time (trr):: -

Operating Temperature:: -55°C ~ 175°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: TO-263 (D2PAK)

STGB20N40LZ FAQ

1.How can I place an order for STGB20N40LZ through Aetrix?

Please submit a Request for Quotation (RFQ) for STGB20N40LZ 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 STGB20N40LZ reliable?

The price and inventory of STGB20N40LZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STGB20N40LZ is usually 5 days.

3.What payment methods are accepted for STGB20N40LZ?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STGB20N40LZ transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STGB20N40LZ?

STGB20N40LZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STGB20N40LZ 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 STGB20N40LZ?

For technical support, including STGB20N40LZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STGB20N40LZ requirements.

6.How does Aetrix verify that STGB20N40LZ is sourced from the original manufacturer or authorized distributors?

All STGB20N40LZ 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 STGB20N40LZ meets industry standards.

7.What is the process for return or replacement of STGB20N40LZ?

All STGB20N40LZ units undergo pre-shipment inspection (PSI). If there is an issue with STGB20N40LZ, 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 STGB20N40LZ part is unused and in its original packaging.

Return procedure for STGB20N40LZ:

1.Submit a request within 90 days.

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

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