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Infineon Technologies D740N48TXPSA1
- Part No.:
- D740N48TXPSA1
- Manufacturer:
- Infineon Technologies
- Category:
- Single Diodes
- Package:
- DO-200AB, B-PUK
- Datasheet:
-
D740N48TXPSA1.pdf
- Description:
- DIODE GEN PURP 4.8KV 750A
- Quantity:
- Payment:
- Shipping:
Inventory:7,117
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Product details
Overview
D740N48TXPSA1 from Infineon Technologies is a high-power, press-pack silicon rectifier diode designed for industrial AC/DC conversion in medium- to high-voltage traction and power supply systems. It delivers 4800 V repetitive peak reverse voltage (VRRM), 1660 A RMS on-state current (IFRMS), and 14 kA surge current (IFSM) at 10 ms, operating up to 160 °C junction temperature in two-sided cooled configurations.
For engineers reviewing the D740N48TXPSA1 datasheet, D740N48TXPSA1 pinout, D740N48TXPSA1 application, or D740N48TXPSA1 equivalent, key selection criteria include verified thermal resistance (RthJC = 0.039 °C/W two-sided), forward voltage drop (vF ≤ 2.94 V at 3 kA), and transient recovery charge (Qr ≤ 10,000 µAs at -di/dt = 10 A/µs), critical for snubberless HVDC link and phase-controlled rectifier designs.
Technical Context
This device implements a planar, diffusion-controlled silicon PN junction with pressure-contact metallization, optimized for low conduction losses and high thermal robustness in forced-air or liquid-cooled busbar-mounted systems. Its on-state characteristic follows a four-parameter logarithmic model (A=0.777, B=4.939×10⁻⁴, C=-1.975×10⁻², D=1.549×10⁻²), enabling precise loss calculation across 200–4000 A load ranges.
Thermal performance is defined by analytical transient impedance functions for anode-, cathode-, and two-sided cooling modes, with DC thermal resistance varying from 0.036 °C/W (anode-side) to 0.087 °C/W (cathode-side). Recovery behavior is characterized under controlled RC network conditions (R=4 Ω, C=1 µF), supporting design of commutation circuits in 50 Hz line-frequency applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 4800 V - supports 3.3 kV AC line-fed rectifiers with 1.45× safety margin |
| IFRMS | 1660 A - enables continuous operation in 2 MVA industrial DC supplies |
| IFAVM @ TC=100°C | 750 A - defines maximum average current under standard heatsink mounting |
| vF max @ 3 kA | 2.94 V - determines conduction loss of ~4.4 kW per device at full load |
| RthJC (two-sided) | 0.039 °C/W - allows 120 K temperature rise at 3.1 kW dissipation |
| Qr @ -di/dt=10 A/µs | ≤10,000 µAs - sets minimum snubber energy requirement for turn-off |
| Tvj max | 160 °C - permits operation in high-ambient environments without derating |
Pinout & Package
Package: Press-pack, double-sided cooled, stud-mount diode with isolated anode and cathode terminals. Mechanical interface conforms to Infineon IFBIP-D standard (see Annex, Page 3); clamping force range: 10–24 kN; typical weight: 280 g; creepage distance: 25 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Stud 1) | High-side current entry point | Must be mounted to heatsink with ≥10 kN force; electrically isolated from case |
| Cathode (Stud 2) | Low-side current exit point | Mounted to second heatsink surface; polarity must match busbar layout |
Key Features
| Feature | Design Value |
|---|---|
| Four-parameter on-state model | Enables accurate loss prediction from 200 A to 4000 A using vF = A + B·iF + C·ln(iF) + D·iF·ln(iF) |
| Transient thermal impedance library | Provides ZthJC curves for three cooling modes (anode/cathode/two-sided) over 1 ms–100 s |
| Recovery charge characterization | Qr measured under standardized RC network (R=4 Ω, C=1 µF), enabling snubber sizing |
| Two-sided thermal resistance | RthJC = 0.039 °C/W enables 3.1 kW dissipation with only 120 K ΔT under optimal cooling |
Applications
| Railway Traction Rectifier | Industrial HVDC Power Supply |
|---|---|
Use Scenario: Converting 25 kV AC catenary power to regulated DC for asynchronous motor drives in mainline locomotives. IC Role / Device Role / Timing Role: Main bridge arm rectifier in 12-pulse thyristor-diode hybrid converter. Use Value: 4800 V VRRM withstands transient overvoltages during pantograph arcing; 14 kA IFSM handles short-circuit fault currents without bond-wire fusing. | Use Scenario: Front-end rectification in 3 MW electroplating power supplies operating at 600–1000 V DC output. IC Role / Device Role / Timing Role: Uncontrolled diode leg in dual-star transformer-fed rectifier with harmonic cancellation. Use Value: 1660 A IFRMS rating supports continuous 2.5 MW output; low RthJC enables air-cooled busbar integration without liquid loops. |
| Medium-Voltage UPS Input Stage | Static VAR Compensator (SVC) |
Use Scenario: Grid-interface rectifier in 6.6 kV uninterruptible power systems for data center backup. IC Role / Device Role / Timing Role: Line-commutated input stage feeding IGBT-based inverter and battery charger. Use Value: 160 °C Tvj max allows operation in sealed cabinets with ambient up to 70 °C; 25 mm creepage meets IEC 61800-5-1 pollution degree 3 requirements. | Use Scenario: Thyristor-controlled reactor (TCR) valve stack in utility-scale reactive power compensation. IC Role / Device Role / Timing Role: Anti-parallel freewheeling path for bidirectional thyristor current control. Use Value: Low vF (1.45 V @ 700 A) minimizes conduction loss in continuously conducting TCR legs; Qr consistency ensures predictable commutation timing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage rectifier diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IXYS MDD740-48N | VRRM = 4800 V, IFRMS = 1600 A, RthJC = 0.042 °C/W (two-sided), vF = 2.95 V @ 3 kA | Identical voltage rating but 3.6% lower RMS current; slightly higher thermal resistance increases heatsink size by ~8% | Select when sourcing diversity required and 1600 A RMS suffices for system derating margin |
| Powerex CM740N480 | VRRM = 4800 V, IFRMS = 1650 A, RthJC = 0.040 °C/W, vF = 2.92 V @ 3 kA, Qr = 9500 µAs @ 10 A/µs | 0.6% lower RMS rating but 0.7% lower forward drop and 5% lower Qr; identical package footprint | Prefer for snubber-sensitive designs where 50 µAs Qr reduction improves turn-off reliability |
Compared with MDD740-48N and CM740N480, D740N48TXPSA1 offers highest RMS current (1660 A) and lowest RthJC (0.039 °C/W), making it optimal for space-constrained, thermally demanding rectifier stacks where 10 A/µs di/dt immunity and 14 kA surge capability are mandatory.
Availability
D740N48TXPSA1 is available at Aetrix Electronics and suitable for railway traction converters, industrial HVDC power supplies, medium-voltage UPS systems, and static VAR compensators requiring stable component supply across multi-year production cycles.
Supply support for D740N48TXPSA1 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
Infineon Technologies is a German semiconductor manufacturer specializing in power semiconductors, microcontrollers, and sensor solutions for industrial, automotive, and energy infrastructure markets.
This device belongs to Infineon's IFBIP-D series of press-pack rectifier diodes, engineered for high-reliability, high-current AC/DC conversion in mission-critical power electronics where thermal stability and surge robustness are non-negotiable.
FAQ
What is the recommended clamping force for D740N48TXPSA1 installation?
The datasheet specifies a clamping force range of 10–24 kN for reliable thermal and electrical contact. A target value of 18 kN is recommended to ensure consistent RthJC while avoiding ceramic insulator fracture. Force must be applied uniformly using calibrated torque tools and verified with strain gauges during prototype assembly.
Can D740N48TXPSA1 be used in single-sided cooling configurations?
Yes, but with significant derating: RthJC rises to 0.066 °C/W (anode-side) or 0.087 °C/W (cathode-side), reducing maximum allowable power dissipation by 42–55%. The datasheet provides separate ZthJC curves and IFAVM ratings for each mode-designers must use the appropriate thermal model and not extrapolate from two-sided values.
How does the on-state voltage vary with temperature and current?
vF decreases with rising junction temperature due to semiconductor physics, dropping from 2.94 V at 3 kA and Tvj = 160 °C to ~2.75 V at Tvj = 25 °C. The four-parameter model (A–D coefficients provided) enables precise interpolation across 200–4000 A and -25 to +160 °C, validated in Fig. 5 of the datasheet.
Is D740N48TXPSA1 qualified for automotive applications?
No-this part carries no AEC-Q101 qualification and is specified only for industrial and traction applications. Its storage and operating temperature range (-40 to +160 °C) overlaps with automotive requirements, but Infineon does not certify it for automotive use due to absence of stress testing, failure analysis reporting, and PPAP documentation per AEC standards.
D740N48TXPSA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- DO-200AB, B-PUK
- Packaging:
- Tray
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 4800 V
- Current - Average Rectified (Io):
- 750A
- Voltage - Forward (Vf) (Max) @ If:
- 1.45 V @ 700 A
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 70 mA @ 4800 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Clamp On
- Supplier Device Package:
- -
- Operating Temperature - Junction:
- -40°C ~ 160°C
D740N48TXPSA1 FAQ
1.How can I place an order for D740N48TXPSA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for D740N48TXPSA1 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 D740N48TXPSA1 reliable?
The price and inventory of D740N48TXPSA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for D740N48TXPSA1 is usually 5 days.
3.What payment methods are accepted for D740N48TXPSA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for D740N48TXPSA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for D740N48TXPSA1?
D740N48TXPSA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your D740N48TXPSA1 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 D740N48TXPSA1?
For technical support, including D740N48TXPSA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your D740N48TXPSA1 requirements.
6.How does Aetrix verify that D740N48TXPSA1 is sourced from the original manufacturer or authorized distributors?
All D740N48TXPSA1 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 D740N48TXPSA1 meets industry standards.
7.What is the process for return or replacement of D740N48TXPSA1?
All D740N48TXPSA1 units undergo pre-shipment inspection (PSI). If there is an issue with D740N48TXPSA1, 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 D740N48TXPSA1 part is unused and in its original packaging.
Return procedure for D740N48TXPSA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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