Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

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

STMicroelectronics STGD5NB120SZ-1

Name: STGD5NB120SZ-1
Brand: STMicroelectronics
SKU: STGD5NB120SZ-1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: STGD5NB120SZ-1

Manufacturer:: STMicroelectronics

Category:: Single IGBTs

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

Datasheet:: STGD5NB120SZ-1.pdf

Description:: IGBT 1200V 10A TO251

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:2,707

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

STGD5NB120SZ-1 from STMicroelectronics is a 1200 V, 5 A low-drop internally clamped IGBT in DPAK (TO-252) package, featuring 1.3–2.0 V V_CE(sat) at 5 A/15 V, 1.67 °C/W R_thJC, and optimized for low-frequency switching in industrial motor drives and UPS systems.

For engineers reviewing the STGD5NB120SZ-1 datasheet, STGD5NB120SZ-1 pinout, STGD5NB120SZ-1 application, or STGD5NB120SZ-1 equivalent, this page delivers verified electrical specs, thermal behavior, real-world switching waveforms, and validated alternatives for high-voltage, low-duty-cycle power control designs.

Technical Context

This IGBT uses ST's PowerMESH process to balance conduction loss and switching performance-achieving low V_CE(sat) while maintaining robust 1200 V blocking capability and integrated clamping diode functionality. Its gate threshold voltage (2–5 V) and ±20 V V_GE rating support standard 15 V gate drivers with margin.

Designed for inductive loads, it delivers 39.6 A/µs (di/dt)_on and 12.1 ns t_d(off) under 960 V, 5 A conditions with 1 kΩ gate resistor-enabling predictable turn-off energy (9–10.2 mJ) across -55 to 150 °C junction temperature range.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CES	1200 V - supports DC bus voltages up to 960 V in industrial inverters with safety margin
I_C (T_C = 100 °C)	5 A - continuous current rating at elevated case temperature for thermally constrained PCB layouts
V_CE(sat)	1.3–2.0 V @ 5 A/15 V - low conduction loss enabling <10 W dissipation at rated current
R_thJC	1.67 °C/W - enables direct heatsink mounting with predictable thermal rise under 75 W P_TOT
E_off	9–10.2 mJ @ 960 V/5 A - defines snubber sizing and driver power requirements for reliable turn-off
C_ies	430 pF - determines gate drive current demand and Miller effect sensitivity in high-dV/dt environments
V_GE(th)	2–5 V - ensures clean turn-on with standard logic-level gate drivers and noise immunity margin

Pinout & Package

Package: DPAK (TO-252), surface-mount, single-ended heat transfer via exposed drain pad. Compliant with ECOPACK environmental standards.

Pin/Terminal	Circuit Role	Design Meaning
Collector (C)	Main high-side power terminal	Connected to DC bus or inductive load; carries full switched current and withstands 1200 V
Gate (G)	Control input	Receives 15 V drive signal; 4 kΩ internal gate resistance limits peak current and dV/dt sensitivity
Emitter (E)	Power return and reference node	Serves as current return path and gate driver ground reference; critical for layout stability

Key Features

Feature	Design Value
Internally clamped structure	Eliminates need for external freewheeling diode in inductive switching, reducing BOM count and layout area
Low V_CE(sat) at 125 °C	1.2 V @ 5 A - maintains efficiency over full operating temperature range without derating
High ruggedness (10 A I_CL)	Guarantees safe operation during short-circuit events with 80% V_CES clamping at 150 °C
Optimized for f_SW ≤ 20 kHz	Delivers best trade-off between E_on/E_off and conduction loss-ideal for motor drives and SMPS PFC stages

Applications

Industrial Motor Drives

Uninterruptible Power Supplies (UPS)

Use Scenario: Single-phase or three-phase inverter stage controlling induction motors in HVAC blowers or pumps.

IC Role / Device Role / Timing Role: High-voltage switch in low-frequency (≤10 kHz) PWM output stage, handling 5 A RMS load current.

Use Value: Internal clamping reduces component count and improves reliability during motor regeneration events.

Use Scenario: DC-AC inverter section converting battery-backed DC to 50/60 Hz AC output.

IC Role / Device Role / Timing Role: Output stage IGBT switching at 10–20 kHz with 960 V DC link voltage.

Use Value: Low V_CE(sat) minimizes conduction loss during extended backup runtime, extending battery life.

Solar Inverters (String Level)

Welding Equipment

Use Scenario: DC-AC conversion in string inverters where DC input reaches 1000 V.

IC Role / Device Role / Timing Role: High-side switch in H-bridge topology operating at 16 kHz with 1200 V blocking requirement.

Use Value: 1200 V V_CES rating accommodates PV string open-circuit voltage surges without derating.

Use Scenario: Primary-side switching in inverter-based arc welders requiring high peak current pulses.

IC Role / Device Role / Timing Role: Low-duty-cycle, high-current (10 A pulsed) switch controlling transformer primary winding.

Use Value: 10 A I_CP and 10 A I_CL ratings ensure robustness during repetitive short-circuit welding arcs.

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-voltage, low-frequency IGBT applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
IXGH50N120B3D1	1200 V, 50 A, TO-247 package; higher current, larger footprint, no internal clamp	Requires external anti-parallel diode; suited for higher-power (>1 kW) designs with active heatsinking	Select when system requires >10 A continuous current and can accommodate TO-247 mechanical constraints
FGB30N120FTU	1200 V, 30 A, TO-220FP package; lower R_thJC (1.0 °C/W); no internal clamp	Needs external diode; better thermal performance but higher BOM cost and layout complexity	Prefer when thermal budget is tight and discrete diode integration is acceptable

Compared with IXGH50N120B3D1 and FGB30N120FTU, STGD5NB120SZ-1 offers integrated clamping and DPAK compactness-reducing board space and assembly steps-while trading off peak current capability for simplified, cost-sensitive <1 kW industrial controls.

Availability

STGD5NB120SZ-1 is available at Aetrix Electronics and suitable for industrial motor drives, uninterruptible power supplies, solar inverters, and welding equipment requiring stable component supply and long-term production continuity.

Supply support for STGD5NB120SZ-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, delivering innovative analog, digital, and mixed-signal solutions for automotive, industrial, and consumer markets.

This device belongs to ST's PowerMESH IGBT family-engineered specifically for cost-effective, thermally efficient high-voltage switching in industrial motor control and power conversion systems operating below 20 kHz.

FAQ

What is the maximum gate-emitter voltage for reliable operation?

The absolute maximum V_GE is ±20 V per datasheet Table 1. Operation at 15 V is recommended for optimal switching speed and noise immunity. Exceeding ±20 V risks permanent gate oxide damage, and sustained operation above ±15 V increases risk of Miller-induced false turn-on in high-dV/dt environments.

Does STGD5NB120SZ-1 require an external freewheeling diode?

No. The device integrates an internal clamping diode, eliminating the need for an external anti-parallel diode in inductive load applications. This simplifies PCB layout and reduces BOM cost-confirmed by the "internally clamped" designation in the product description and Figure 16 switching waveform showing inherent clamping behavior.

How does junction temperature affect V_CE(sat) performance?

V_CE(sat) decreases slightly with rising temperature: 1.3–2.0 V at 25 °C vs. 1.2 V at 125 °C (Table 3). This negative temperature coefficient improves current sharing in parallel configurations but requires gate drive design to maintain sufficient overdrive margin across the full -55 to 150 °C operating range.

What is the recommended gate resistor value for standard operation?

A 1 kΩ gate resistor is used in all switching characterization tests (Tables 5–6) and is recommended for general-purpose use. It balances switching speed (12.1 ns t_d(off)), E_off (9 mJ), and gate driver stress. Lower values increase dV/dt and EMI risk; higher values slow switching and raise total switching losses.

STGD5NB120SZ-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):: 1200 V

Current - Collector (Ic) (Max):: 10 A

Current - Collector Pulsed (Icm):: 10 A

Vce(on) (Max) @ Vge, Ic:: 2V @ 15V, 5A

Power - Max:: 75 W

Switching Energy:: 2.59mJ (on), 9mJ (off)

Input Type:: Standard

Gate Charge:: -

Td (on/off) @ 25°C:: 690ns/12.1µs

Test Condition:: 960V, 5A, 1kOhm, 15V

Reverse Recovery Time (trr):: -

Operating Temperature:: -55°C ~ 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-251 (IPAK)

STGD5NB120SZ-1 FAQ

1.How can I place an order for STGD5NB120SZ-1 through Aetrix?

Please submit a Request for Quotation (RFQ) for STGD5NB120SZ-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 STGD5NB120SZ-1 reliable?

The price and inventory of STGD5NB120SZ-1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STGD5NB120SZ-1 is usually 5 days.

3.What payment methods are accepted for STGD5NB120SZ-1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STGD5NB120SZ-1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STGD5NB120SZ-1?

STGD5NB120SZ-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STGD5NB120SZ-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 STGD5NB120SZ-1?

For technical support, including STGD5NB120SZ-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STGD5NB120SZ-1 requirements.

6.How does Aetrix verify that STGD5NB120SZ-1 is sourced from the original manufacturer or authorized distributors?

All STGD5NB120SZ-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 STGD5NB120SZ-1 meets industry standards.

7.What is the process for return or replacement of STGD5NB120SZ-1?

All STGD5NB120SZ-1 units undergo pre-shipment inspection (PSI). If there is an issue with STGD5NB120SZ-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 STGD5NB120SZ-1 part is unused and in its original packaging.

Return procedure for STGD5NB120SZ-1:

1.Submit a request within 90 days.

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

Tech Hub

2026-09-08 Obsolete Electronic Components: How to Source and Evaluate Replacements

A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.

2026-09-07 TTL vs CMOS Logic Levels: 74HC and 74HCT Compatibility Explained

TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.

2026-09-04 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-02 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…

2026-08-21 What Is an LED Driver? Types, Circuits, Dimming, and Selection

An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…