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

STMicroelectronics STGB18N40LZT4

Name: STGB18N40LZT4
Brand: STMicroelectronics
SKU: STGB18N40LZT4
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STGB18N40LZT4

Manufacturer:: STMicroelectronics

Category:: Single IGBTs

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

Datasheet:: STGB18N40LZT4.pdf

Description:: IGBT 420V 30A D2PAK

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Product details

Overview

STGB18N40LZT4 from STMicroelectronics is an AEC-Q101-qualified automotive-grade IGBT optimized for pencil coil electronic ignition drivers. It features 390 V internal collector-emitter clamping, 180 mJ single-pulse SCIS energy at TC = 150 °C, logic-level gate drive (V_GE(th) = 1.2–2.3 V), 1.7 V V_CE(sat) at 10 A/25 °C, and integrated 12–22 kΩ gate-emitter resistor. It operates across –40 to 175 °C junction temperature in harsh engine bay environments.

For engineers reviewing the STGB18N40LZT4 datasheet, STGB18N40LZT4 pinout, STGB18N40LZT4 application, or STGB18N40LZT4 equivalent, key selection criteria include clamped voltage rating, SCIS robustness under high-temperature inductive switching, gate threshold stability over temperature, integrated ESD protection (8 kV HBM), and D²PAK thermal resistance (R_thJC = 1 °C/W).

Technical Context

This IGBT employs ST's PowerMESH technology with built-in gate-collector voltage clamping and ESD-protected logic-level gate input. Its design eliminates external gate protection components while sustaining 40 A pulsed collector current and delivering fast switching (t_d(off) = 13.5 μs, dV/dt = 105 V/μs) under 300 V inductive loads.

The device integrates a 1.6 kΩ gate resistor and 12–22 kΩ gate-emitter resistor, enabling direct microcontroller interface without level-shifting. Its 390 V clamped V_CES and 180 mJ ESCIS at 150 °C ensure reliable coil energy dump during spark events across full automotive temperature range.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CES(clamped)	390 V - Internally clamped collector-emitter breakdown prevents external snubber in ignition coil flyback
V_CE(sat)	1.7 V @ 10 A, 25 °C - Low conduction loss reduces thermal stress in high-duty-cycle spark events
ESCIS	180 mJ @ TC = 150 °C, L = 3 mH - Robust single-pulse inductive switching capability under worst-case engine bay temperature
V_GE(th)	1.2–2.3 V - Logic-level gate threshold enables direct 3.3 V/5 V MCU drive without gate driver IC
R_thJC	1 °C/W - Enables high-power dissipation (150 W max) with minimal case-to-junction temperature rise
Q_g	29 nC - Optimized gate charge supports fast turn-on/off with low driver power demand
ESD HBM	8 kV - Integrated gate protection eliminates need for external TVS on gate line

Pinout & Package

Package: D²PAK (TO-263), surface-mount, thermally enhanced with exposed drain tab (pin 3). Case temperature sensing via tab enables accurate thermal management in ignition modules.

Pin/Terminal	Circuit Role	Design Meaning
G (1)	Gate	Logic-level input with integrated 1.6 kΩ series resistor and 12–22 kΩ gate-emitter resistor; accepts 3.3 V/5 V drive directly
C (2)	Collector	Main high-side power terminal; connected to ignition coil primary; internally clamped to 390 V
E (3) / TAB	Emitter / Drain Tab	Low-side return path; electrically tied to emitter; large copper tab provides thermal conduction to heatsink/PCB

Key Features

Feature	Design Value
AEC-Q101 qualification	Validated for automotive under-hood use including temperature cycling, humidity, and mechanical shock per JESD47
Integrated gate-emitter resistor	12–22 kΩ on-chip resistor suppresses gate oscillation and eliminates external bias network
Self-clamped V_CES	390 V clamping avoids external Zener clamp diode and associated layout complexity
High SCIS energy at 150 °C	180 mJ sustained at max junction temperature ensures spark reliability during prolonged high-load engine operation
ESD-protected gate	8 kV HBM rating enables safe handling and eliminates gate-line TVS in production assembly

Applications

Gasoline Engine Ignition Coil Driver

Diesel Pre/Post-Glow Control

Use Scenario: Direct-driving of pencil-type ignition coils in 4–12 cylinder gasoline engines with variable dwell time control.

IC Role / Device Role / Timing Role: High-voltage, high-current switch that controls primary coil current buildup and collapse to generate spark timing.

Use Value: 390 V clamping and 180 mJ SCIS ensure consistent spark energy delivery even at 150 °C ambient, reducing misfire risk.

Use Scenario: Switching pre-glow and post-glow relays in diesel engine cold-start systems with PWM-controlled heating duration.

IC Role / Device Role / Timing Role: Robust power switch handling inductive relay loads up to 40 A peak with fast turn-off to prevent contact welding.

Use Value: Integrated gate resistor and ESD protection simplify PCB layout and improve field reliability in vibration-prone chassis environments.

Electronic Throttle Actuator (ETA) Motor Driver

Engine Coolant Pump Control

Use Scenario: Driving brushed DC motors in closed-loop throttle position control where precise current limiting and fault tolerance are critical.

IC Role / Device Role / Timing Role: Half-bridge high-side switch enabling bidirectional motor control with overcurrent and thermal shutdown coordination.

Use Value: Low V_CE(sat) (1.7 V) minimizes power loss during continuous 10–15 A operation, extending actuator lifetime.

Use Scenario: Controlling 12 V/24 V brushless or brushed coolant pumps in modern thermal management systems with variable speed profiles.

IC Role / Device Role / Timing Role: High-efficiency power stage managing pump startup surge (up to 40 A) and steady-state load (10–20 A).

Use Value: R_thJC = 1 °C/W allows direct mounting to aluminum housing, eliminating discrete heatsink and reducing system cost.

Equivalent & Alternatives

The following parts are listed as comparable options for similar IGBT-based automotive power switching applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
STGP18N40LZ	TO-220 package, no integrated gate-emitter resistor, higher R_thJA (62.5 °C/W vs 1 °C/W case-to-ambient not applicable)	Requires external gate bias network and heatsink; less suitable for space-constrained ignition modules	Select when board-level thermal design permits TO-220 mounting and gate protection can be added externally
IRGB4062DPBF	Non-AEC-Q101, 400 V V_CES, 1.8 V V_CE(sat), no integrated R_GE, 6 kV HBM ESD	Lacks automotive qualification and integrated gate resistor; requires additional protection circuitry	Consider only for non-automotive industrial coil drivers where AEC-Q101 is not mandated

Compared with STGP18N40LZ and IRGB4062DPBF, STGB18N40LZT4 delivers superior integration (on-die R_GE, clamping, ESD), automotive qualification, and thermal performance in D²PAK-reducing BOM count and improving ignition system reliability without compromising switching speed or energy handling.

Availability

STGB18N40LZT4 is available at Aetrix Electronics and suitable for gasoline engine ignition systems, diesel glow plug controllers, electronic throttle actuators, and engine coolant pump drives requiring stable component supply across extended automotive lifecycles.

Supply support for STGB18N40LZT4 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 discrete technologies with vertical manufacturing capabilities.

This device belongs to ST's Automotive Power Discrete portfolio, engineered specifically for high-reliability, high-energy switching in engine management subsystems-including ignition, fuel injection, and thermal actuation-where robustness under extreme temperature and EMI is mandatory.

FAQ

What is the maximum operating junction temperature for STGB18N40LZT4?

The STGB18N40LZT4 has a specified operating junction temperature range of –40 °C to 175 °C. Its electrical characteristics-including V_CE(sat), V_GE(th), and ESCIS-are guaranteed across this full range, with 180 mJ SCIS energy validated at T_J = 150 °C. Thermal derating is not required until exceeding 175 °C, which aligns with AEC-Q101 transient thermal stress requirements.

Does STGB18N40LZT4 require an external gate resistor?

No. STGB18N40LZT4 integrates both a 1.6 kΩ gate series resistor and a 12–22 kΩ gate-emitter resistor on-die. These eliminate the need for external gate resistors in standard ignition coil driver configurations, simplifying layout and improving noise immunity. External gate resistance may still be added for fine-tuning dv/dt or EMI in specific board-level designs.

How does the 390 V V_CES(clamped) protect the IGBT during coil flyback?

The internal clamping structure limits collector-emitter voltage to 390 V during inductive turn-off, absorbing flyback energy without requiring external snubbers or Zener clamps. This is verified under standardized ESCIS test conditions (L = 3 mH, V_CC = 50 V) and sustains 180 mJ at 150 °C-ensuring predictable, repeatable spark generation even under high-temperature engine operation.

Is STGB18N40LZT4 pin-compatible with other ST IGBTs in D²PAK?

STGB18N40LZT4 uses the standard D²PAK (TO-263) 3-pin footprint with G-C-E pinout (1-2-3), matching ST's STGP18N40LZ and STGD18N40LZ in physical layout. However, it is not functionally pin-compatible due to integrated R_GE and clamping-external circuits designed for non-clamped or non-resistor-equipped variants must be revalidated for gate bias and voltage margin.

STGB18N40LZT4 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:: Active

IGBT Type:: -

Voltage - Collector Emitter Breakdown (Max):: 420 V

Current - Collector (Ic) (Max):: 30 A

Current - Collector Pulsed (Icm):: 40 A

Vce(on) (Max) @ Vge, Ic:: 1.7V @ 4.5V, 10A

Power - Max:: 150 W

Switching Energy:: -

Input Type:: Logic

Gate Charge:: 29 nC

Td (on/off) @ 25°C:: 650ns/13.5µs

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

Reverse Recovery Time (trr):: -

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

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: D2PAK

STGB18N40LZT4 FAQ

1.How can I place an order for STGB18N40LZT4 through Aetrix?

Please submit a Request for Quotation (RFQ) for STGB18N40LZT4 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 STGB18N40LZT4 reliable?

The price and inventory of STGB18N40LZT4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STGB18N40LZT4 is usually 5 days.

3.What payment methods are accepted for STGB18N40LZT4?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STGB18N40LZT4 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STGB18N40LZT4?

STGB18N40LZT4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STGB18N40LZT4 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 STGB18N40LZT4?

For technical support, including STGB18N40LZT4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STGB18N40LZT4 requirements.

6.How does Aetrix verify that STGB18N40LZT4 is sourced from the original manufacturer or authorized distributors?

All STGB18N40LZT4 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 STGB18N40LZT4 meets industry standards.

7.What is the process for return or replacement of STGB18N40LZT4?

All STGB18N40LZT4 units undergo pre-shipment inspection (PSI). If there is an issue with STGB18N40LZT4, 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 STGB18N40LZT4 part is unused and in its original packaging.

Return procedure for STGB18N40LZT4:

1.Submit a request within 90 days.

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

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