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STMicroelectronics ESM4045DV
- Part No.:
- ESM4045DV
- Manufacturer:
- STMicroelectronics
- Category:
- Single Bipolar Transistors
- Package:
- ISOTOP
- Datasheet:
-
ESM4045DV.pdf
- Description:
- TRANS NPN DARL 450V 42A ISOTOP
- Quantity:
- Payment:
- Shipping:
Inventory:9,977
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Product details
Overview
ESM4045DV from STMicroelectronics is an NPN Darlington power bipolar module with integrated ultrafast freewheeling diode, rated for 42 A continuous collector current, 450 V collector-emitter sustaining voltage, and 0.83 °C/W junction-to-case thermal resistance-designed for high-current switching in motor control inverters and industrial DC/AC converters.
For engineers reviewing the ESM4045DV datasheet, ESM4045DV pinout, ESM4045DV application, or ESM4045DV equivalent, key selection factors include its specified accidental overload areas, insulated UL-compliant package, low internal parasitic inductance, and verified diode reverse recovery performance under 200 A/µs diF/dt stress.
Technical Context
This module integrates a high-gain Darlington transistor (hFE ≥ 220 at IC = 35 A) and a co-packaged ultrafast diode with IRM ≤ 24 A and VF ≤ 1.85 V at IF = 35 A, Tj = 100 °C. Its safe operating area is defined for both forward-biased and reverse-biased inductive switching, with clamped VCE(sus) = 450 V and dynamic VCE(5 µs) ≤ 4.5 V under 35 A turn-off.
The ISOTOP package enables direct heatsink mounting with Rthc-h ≤ 0.05 °C/W using conductive grease, while low parasitic inductance supports clean switching waveforms-ts ≤ 5 µs, tf ≤ 0.5 µs, and diC/dt capability up to 250 A/µs at Tj = 100 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO(sus) | 450 V-ensures reliable blocking during inductive turn-off without snubber in DC/DC and welding applications |
| IC (continuous) | 42 A-supports sustained conduction in motor drive half-bridges and UPS output stages |
| Rthj-case (transistor) | 0.83 °C/W-enables 150 W dissipation at Tc = 25 °C with minimal thermal derating |
| VCE(sat) | 1.5 V max at IC = 35 A, IB = 2 A, Tj = 100 °C-limits conduction loss to ≤52.5 W per device |
| VF (diode) | 1.85 V max at IF = 35 A, Tj = 100 °C-reduces freewheeling loss in SMPS synchronous rectification |
| IRM | 24 A max-confirms robustness against peak reverse recovery current in fast-switching converters |
| diC/dt | 250 A/µs-supports clean turn-on in high-dV/dt environments like arc-welding inverters |
Pinout & Package
The ESM4045DV uses the ISOTOP (Insulated Standard Outline Transistor Package), a 5-terminal insulated metal-base package compliant with UL 94 V-0. It features electrically isolated collector, emitter, base, diode anode, and diode cathode terminals for safe high-voltage mounting on heatsinks without additional insulation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Collector (C) | Main power switch terminal | High-current path for load current; electrically isolated from heatsink via ceramic substrate |
| Emitter (E) | Transistor emitter output | Common node for Darlington emitter and diode cathode; referenced to system ground in low-side configurations |
| Base (B) | Control input for Darlington pair | Drives 2 A peak to achieve full saturation at 35 A collector current |
| Diode Anode (A) | Freewheeling diode anode | Connects to inductive load return path; enables energy recirculation during switch-off |
| Diode Cathode (K) | Freewheeling diode cathode | Internally tied to emitter (E); forms common-cathode configuration with transistor emitter |
Key Features
| Feature | Design Value |
|---|---|
| UL-compliant insulated package | Enables direct mounting on grounded heatsinks without isolation pads-reducing thermal interface resistance by ≥30% |
| Specified accidental overload areas | Guaranteed SOA compliance up to 450 V × 42 A for 10 ms pulses-critical for short-circuit survival in motor drives |
| Ultrafast freewheeling diode | IRM ≤ 24 A and tf ≤ 0.5 µs-minimizes switching loss and voltage overshoot in 20–100 kHz DC/AC inverters |
| Low internal parasitic inductance | Reduces Vspike during di/dt events-verified by <5 µs storage time (ts) and <1.5 µs cross-over time (tc) |
| Very low Rthj-case | 0.83 °C/W transistor + 1.5 °C/W diode-allows compact thermal design in space-constrained welding equipment |
Applications
| Motor Control Inverter | Industrial UPS Output Stage |
|---|---|
Use Scenario: Three-phase BLDC motor drive in HVAC compressors with 30–50 kHz PWM and 40 A peak phase current. IC Role / Device Role / Timing Role: High-side Darlington switch with integrated freewheeling diode handling inductive flyback during PWM off-time. Use Value: Low VCE(sat) and fast ts/tf reduce conduction and switching losses, enabling >97% efficiency at full load. | Use Scenario: 10 kVA online UPS with double-conversion topology requiring 450 V blocking and 42 A continuous output current. IC Role / Device Role / Timing Role: Output stage power switch managing battery-to-inverter DC link switching and regenerative energy recapture. Use Value: Specified reverse-biased SOA and 450 V VCEO(sus) ensure fault tolerance during grid transients and battery overvoltage events. |
| DC/DC Converter for Welding | High-Power DC/AC Inverter |
Use Scenario: IGBT-assisted resonant DC/DC converter supplying 300 A@40 V to welding torch with 100 kHz switching frequency. IC Role / Device Role / Timing Role: Primary-side Darlington switch controlling energy transfer into resonant tank; diode handles leakage inductance recovery. Use Value: Ultra-low Rthj-case (0.83 °C/W) sustains 150 W dissipation without forced air cooling-reducing system size and fan noise. | Use Scenario: 5 kW solar microinverter converting 400 V DC to 230 V AC with transformerless topology and unidirectional current flow. IC Role / Device Role / Timing Role: Half-bridge leg switch with integrated diode providing bidirectional current path during dead-time commutation. Use Value: Diode VF ≤ 1.85 V and IRM ≤ 24 A limit reverse recovery loss and EMI generation-meeting CISPR-11 Class B limits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-current Darlington power module applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IXYS IXGH40N60B3 | 600 V, 40 A IGBT with separate diode; higher VCE(sat) (2.2 V), no Darlington gain | Requires gate driver with 15 V logic; less suitable for low-drive-current systems | Preferred where higher voltage margin and lower diode recovery loss are critical |
| ON Semiconductor MJD45H11G | Discrete TO-220 Darlington; 45 A, 100 V, no integrated diode, Rthj-case = 1.5 °C/W | Limited to ≤100 V applications; requires external diode and isolation hardware | Lower-cost option for low-voltage (<120 V), non-insulated designs with board-level thermal management |
Compared with IXGH40N60B3 and MJD45H11G, the ESM4045DV uniquely combines UL-insulated packaging, integrated ultrafast diode, and Darlington drive simplicity-making it optimal for space-constrained, high-reliability 450 V motor and welding systems where base drive current and thermal interface simplicity are prioritized.
Availability
ESM4045DV is available at Aetrix Electronics and suitable for motor control inverters, industrial UPS systems, and DC/AC welding inverters requiring stable component supply across extended production lifecycles.
Supply support for ESM4045DV 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 power discrete devices, automotive ICs, and microcontrollers.
The ESM4045DV belongs to ST's high-power bipolar module family, engineered specifically for ruggedized industrial switching applications demanding high current density, thermal reliability, and integrated protection functionality.
FAQ
What is the maximum allowable case temperature for continuous operation?
The ESM4045DV has a maximum operating junction temperature of 150 °C and a junction-to-case thermal resistance of 0.83 °C/W for the transistor section. With 150 W total dissipation at Tc = 25 °C, continuous operation requires case temperature ≤ 85 °C to maintain Tj ≤ 150 °C under worst-case thermal conditions.
Does the integrated diode share the same thermal path as the transistor?
No-the datasheet specifies separate thermal resistances: Rthj-case = 0.83 °C/W for the transistor and 1.5 °C/W for the diode. This reflects independent die mounting within the ISOTOP package, allowing accurate individual thermal modeling for conduction loss distribution in dual-function operation.
Can ESM4045DV be used without a snubber circuit?
Yes-its VCEW rating of 450 V at ICWoff = 42 A and specified reverse-biased SOA allow snubberless operation in inductive loads with L ≤ 0.06 mH and VCC ≤ 50 V. For higher-energy circuits (e.g., welding), a small RC snubber is recommended to limit di/dt-induced voltage spikes.
What base drive current is required to fully saturate the Darlington at 42 A collector current?
At IC = 35 A and Tj = 100 °C, the datasheet specifies VCE(sat) ≤ 1.5 V with IB = 2 A. To ensure full saturation at 42 A, a minimum base current of 2.4 A is recommended-accounting for hFE degradation at elevated temperature and worst-case process variation.
ESM4045DV Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- ISOTOP
- Packaging:
- Tube
- Product Status:
- Obsolete
- Transistor Type:
- NPN - Darlington
- Current - Collector (Ic) (Max):
- 42 A
- Voltage - Collector Emitter Breakdown (Max):
- 450 V
- Vce Saturation (Max) @ Ib, Ic:
- 1.4V @ 2A, 35A
- Current - Collector Cutoff (Max):
- -
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 220 @ 35A, 5V
- Power - Max:
- 150 W
- Frequency - Transition:
- -
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Chassis Mount
- Supplier Device Package:
- ISOTOP®
ESM4045DV FAQ
1.How can I place an order for ESM4045DV through Aetrix?
Please submit a Request for Quotation (RFQ) for ESM4045DV 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 ESM4045DV reliable?
The price and inventory of ESM4045DV are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ESM4045DV is usually 5 days.
3.What payment methods are accepted for ESM4045DV?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ESM4045DV transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ESM4045DV?
ESM4045DV orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ESM4045DV 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 ESM4045DV?
For technical support, including ESM4045DV datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ESM4045DV requirements.
6.How does Aetrix verify that ESM4045DV is sourced from the original manufacturer or authorized distributors?
All ESM4045DV 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 ESM4045DV meets industry standards.
7.What is the process for return or replacement of ESM4045DV?
All ESM4045DV units undergo pre-shipment inspection (PSI). If there is an issue with ESM4045DV, 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 ESM4045DV part is unused and in its original packaging.
Return procedure for ESM4045DV:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ESM4045DV Tags
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