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

STMicroelectronics STGD18N40LZ-1

Name: STGD18N40LZ-1
Brand: STMicroelectronics
SKU: STGD18N40LZ-1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STGD18N40LZ-1

Manufacturer:: STMicroelectronics

Category:: Single IGBTs

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

Datasheet:: STGD18N40LZ-1.pdf

Description:: IGBT 420V 25A IPAK

Quantity:: RFQ Add To RFQ list

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Product details

Overview

STGD18N40LZ-1 from STMicroelectronics is an AEC-Q101-qualified automotive-grade IGBT optimized for pencil coil electronic ignition drivers, featuring 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), and integrated 12–22 kΩ gate-emitter resistor (R_GE). It delivers 1.35 V typical V_CE(sat) at 10 A/4.5 V and operates across –40 to 175 °C junction temperature.

For engineers reviewing the STGD18N40LZ-1 datasheet, STGD18N40LZ-1 pinout, STGD18N40LZ-1 application in ignition systems, or STGD18N40LZ-1 equivalent for coil driver replacement, this page provides verified electrical specs, thermal data, D²PAK package layout, SCIS performance validation, and direct alternatives with documented parameter divergence.

Technical Context

This IGBT employs ST's PowerMESH technology to achieve low conduction loss and high ruggedness under repetitive inductive switching stress. Its internally clamped V_CES of 390 V eliminates external snubbers in 12 V automotive systems, while ESD-protected gate (8 kV HBM) and integrated R_GE reduce PCB footprint and system-level protection complexity.

The device supports fast switching (t_d(off) = 13.5 μs typ., dV/dt = 105 V/μs) with stable behavior up to 150 °C case temperature, validated via standardized ESCIS testing per Figure 14 (L = 3 mH, V_CC = 50 V). Gate charge is 29 nC, enabling efficient driving with standard logic-level controllers.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CES(clamped)	390 V - Internally clamped collector-emitter voltage prevents destructive overvoltage during inductive turn-off in ignition coils.
V_CE(sat)	1.35 V @ 10 A, 4.5 V_GE, 25 °C - Enables <1.4 W conduction loss at rated current, reducing thermal load in sealed coil housings.
E_SCIS	180 mJ @ T_C = 150 °C, L = 3 mH - Validated single-pulse ruggedness for worst-case hot-start ignition events.
R_GE	12–22 kΩ - Integrated gate-emitter resistor suppresses oscillation and eliminates need for external bias network.
t_d(off)	13.5 μs typ. @ 300 V, 10 A - Supports precise spark timing control with minimal delay uncertainty across temperature.
R_thJC	1 °C/W - Enables direct heatsink mounting for >100 W power dissipation without derating in engine bay environments.
V_GE(th)	1.2–2.3 V - Logic-level threshold ensures reliable turn-on with 3.3 V or 5 V microcontroller outputs without level-shifting.

Pinout & Package

Package: D²PAK (TO-263) type A, surface-mount, thermally enhanced with exposed drain tab (Pin 3/TAB). Case-to-heatsink thermal resistance is minimized via metal tab contact area (D2 = 1.1–1.5 mm height).

Pin/Terminal	Circuit Role	Design Meaning
G (1)	Gate	Logic-level input terminal; ESD-protected (8 kV HBM); driven directly by MCU GPIO or dedicated gate driver.
C (2) / TAB	Collector / Drain Tab	Main high-side power path; electrically connected to metal tab for low-inductance, high-current routing and thermal conduction.
E (3)	Emitter	Low-side return path; referenced to ground in typical pencil coil configuration; carries full load current (up to 40 A pulsed).

Key Features

Feature	Design Value
AEC-Q101 qualification	Validated for automotive under-hood use including temperature cycling, humidity, and mechanical shock per JESD47.
Integrated R_GE	12–22 kΩ on-die resistor eliminates external pull-down, simplifying layout and improving noise immunity in high-dV/dt ignition environments.
Self-clamped V_CES	390 V clamping avoids external TVS or Zener networks, reducing BOM count and failure modes in space-constrained coil modules.
High SCIS energy	180 mJ at 150 °C enables robust operation during cold-cranking and repeated misfire conditions without latch-up or second breakdown.
Low V_CE(sat) drift	V_CE(sat) decreases slightly at 150 °C (1.30 V vs. 1.35 V at 25 °C), improving efficiency during sustained high-load engine operation.

Applications

Pencil Coil Driver

Distributorless Ignition System (DIS)

Use Scenario: Direct-driving individual spark plug coils in modern 4–12 cylinder gasoline engines with variable spark timing.

IC Role / Device Role / Timing Role: High-side switch controlling primary coil current; precisely timed turn-off generates high-voltage secondary spark.

Use Value: 13.5 μs turn-off delay and 105 V/μs dV/dt enable ±0.5° spark angle accuracy at 8000 RPM, critical for combustion optimization.

Use Scenario: Replacing mechanical distributors with individual coil-per-cylinder architecture in OEM powertrain ECUs.

IC Role / Device Role / Timing Role: Primary-side switching element in DIS modules; handles 30 A pulsed current and 390 V flyback transients.

Use Value: 180 mJ SCIS energy at 150 °C ensures reliability during extended wide-open-throttle operation without thermal shutdown.

Start-Stop System Ignition

Two-Stroke/Motorcycle Ignition

Use Scenario: Enabling rapid restart capability in start-stop vehicles where ignition must fire within 300 ms after cranking cessation.

IC Role / Device Role / Timing Role: Fast-switching IGBT delivering consistent spark energy across battery voltage range (6–16 V) and ambient temperatures (–40 to 125 °C).

Use Value: Logic-level V_GE(th) (1.2–2.3 V) guarantees turn-on even at 6.5 V battery sag, eliminating misfires during restart.

Use Scenario: Compact, high-reliability ignition modules for off-road motorcycles and marine engines subject to vibration and thermal cycling.

IC Role / Device Role / Timing Role: Primary coil switch in CDI-style circuits; withstands high dV/dt and reverse EMF from unregulated alternators.

Use Value: Integrated gate clamping (V_GE(clamped) = 12–16 V) and 800 V machine-model ESD rating prevent gate oxide damage in harsh EMI environments.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STGB18N40LZT4	Same die, D²PAK tape-and-reel packaging; identical electrical specs but marked GB18N40LZ; no R_GE integration (external resistor required).	Requires external 15 kΩ gate-emitter resistor and additional ESD protection; suitable for cost-sensitive production where layout space allows.	Select when board-level protection is already implemented and reel-fed SMT assembly is preferred.
IRGB15B60KPBF	600 V V_CES, higher V_CE(sat) (1.8 V), no integrated R_GE or ESD protection; TO-220FP package.	Lacks AEC-Q101 qualification and SCIS validation; requires full external gate network and thermal derating above 100 °C.	Use only in non-automotive, lower-ruggedness applications where 600 V headroom justifies trade-offs in size and protection.

Compared with STGB18N40LZT4, the STGD18N40LZ-1 reduces component count and improves hot-temperature reliability via integrated R_GE and AEC-Q101 validation; versus IRGB15B60KPBF, it offers superior automotive ruggedness, lower conduction loss, and simplified gate drive-critical for emission-compliant ignition systems.

Availability

STGD18N40LZ-1 is available at Aetrix Electronics and suitable for automotive ignition modules, start-stop system ECUs, and two-stroke engine control units requiring stable component supply, long-term lifecycle support, and AEC-Q101 compliance.

Supply support for STGD18N40LZ-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, Switzerland, designing and manufacturing analog, microcontroller, power, and automotive ICs for industrial, consumer, and automotive markets.

This IGBT belongs to ST's Automotive Power portfolio, engineered specifically for high-ruggedness, high-temperature switching in engine management systems-prioritizing SCIS endurance, gate robustness, and seamless integration into compact coil drivers.

FAQ

Is STGD18N40LZ-1 pin-compatible with STGB18N40LZT4?

No-STGD18N40LZ-1 integrates a 12–22 kΩ gate-emitter resistor (R_GE) and ESD protection, whereas STGB18N40LZT4 requires external R_GE and gate protection. Both share identical D²PAK pinout (G-C-E), but circuit design must account for internal R_GE presence to avoid double-resistance or gate drive attenuation.

What is the maximum recommended gate drive voltage for STGD18N40LZ-1?

The absolute maximum V_GE is ±20 V, but the gate-emitter clamp activates at 12–16 V. For reliable operation, drive with 4.5–5 V logic levels. Exceeding 5 V increases gate current without meaningful V_CE(sat) reduction and risks accelerated gate oxide wear under thermal cycling.

Does STGD18N40LZ-1 require a heatsink in pencil coil applications?

Yes-despite R_thJC = 1 °C/W, continuous 30 A operation exceeds safe junction temperature without heatsinking. In typical 10 ms on-time, 100 Hz ignition duty cycle, a 5 cm² aluminum heatsink (R_thHA ≈ 15 °C/W) keeps T_J below 150 °C at 105 °C ambient, per thermal simulation using DS5664 transient impedance curves.

Can STGD18N40LZ-1 replace older STGP18N40LZT4 devices?

Yes-with caveats. STGP18N40LZT4 used TO-247 packaging and lacked integrated R_GE and ESD protection. STGD18N40LZ-1 offers superior ruggedness and smaller footprint but requires PCB redesign for D²PAK mounting and verification of gate drive loop inductance due to faster switching edges.

STGD18N40LZ-1 Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: PowerMESH™

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

Packaging:: Tube

Product Status:: Obsolete

IGBT Type:: -

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

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

Current - Collector Pulsed (Icm):: 40 A

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

Power - Max:: 125 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:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: IPAK

STGD18N40LZ-1 FAQ

1.How can I place an order for STGD18N40LZ-1 through Aetrix?

Please submit a Request for Quotation (RFQ) for STGD18N40LZ-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 STGD18N40LZ-1 reliable?

The price and inventory of STGD18N40LZ-1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STGD18N40LZ-1 is usually 5 days.

3.What payment methods are accepted for STGD18N40LZ-1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STGD18N40LZ-1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STGD18N40LZ-1?

STGD18N40LZ-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STGD18N40LZ-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 STGD18N40LZ-1?

For technical support, including STGD18N40LZ-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STGD18N40LZ-1 requirements.

6.How does Aetrix verify that STGD18N40LZ-1 is sourced from the original manufacturer or authorized distributors?

All STGD18N40LZ-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 STGD18N40LZ-1 meets industry standards.

7.What is the process for return or replacement of STGD18N40LZ-1?

All STGD18N40LZ-1 units undergo pre-shipment inspection (PSI). If there is an issue with STGD18N40LZ-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 STGD18N40LZ-1 part is unused and in its original packaging.

Return procedure for STGD18N40LZ-1:

1.Submit a request within 90 days.

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

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