My Inquiry
My Account
Infineon Technologies D850N36TXPSA1
- Part No.:
- D850N36TXPSA1
- Manufacturer:
- Infineon Technologies
- Category:
- Single Diodes
- Package:
- DO-200AB, B-PUK
- Datasheet:
-
D850N36TXPSA1.pdf
- Description:
- DIODE GEN PURP 3.6KV 850A
- Quantity:
- Payment:
- Shipping:
Inventory:7,286
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
D850N36TXPSA1 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 850 A average on-state current at TC = 100 °C, supports 3600 V repetitive peak reverse voltage (VRRM), and handles 15.4 kA surge current (IFSM) at 10 ms - enabling use in 3.3 kV-class railway converters and HVDC link protection.
For engineers reviewing the D850N36TXPSA1 datasheet, D850N36TXPSA1 pinout, D850N36TXPSA1 application, or D850N36TXPSA1 equivalent, key selection criteria include junction-to-case thermal resistance (0.038 °C/W two-sided), forward voltage drop (1.28 V at 850 A), and transient thermal impedance behavior under 50 Hz half-wave overload sequences.
Technical Context
This device operates as a unidirectional, non-controlled power rectifier with a planar, diffusion-processed silicon die mounted in a double-sided cooled, pressure-contact package. Its on-state characteristic follows a four-parameter logarithmic model (A=0.1127, B=5.455×10⁻⁴, C=0.1541, D=−1.097×10⁻²), enabling precise conduction loss modeling across 200–4000 A.
Thermal performance is defined by dual-mode cooling paths: two-sided clamping yields RthJC = 0.038 °C/W, while anode- or cathode-only cooling degrades it to 0.064–0.085 °C/W. Transient thermal impedance ZthJC is analytically modeled using seven RC network elements, supporting accurate short-duration overload simulation up to 10 s.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 3600 V - blocks line transients in 3.3 kV AC-fed rectifiers without avalanche breakdown |
| IFAVM @ TC=100°C | 850 A - continuous DC output capability in forced-air or liquid-cooled converter cabinets |
| IFSM (10 ms) | 15400 A - withstands fault currents during short-circuit events in grid-tied inverters |
| vF @ 850 A | 1.28 V - determines conduction loss of ~1.09 kW per device at rated DC current |
| RthJC (two-sided) | 0.038 °C/W - enables 160 °C max junction operation with ≤6.46 °C case-to-heatsink ΔT at full load |
| I²t (10 ms) | 1186 ×10³ A²s - defines fusing energy threshold for coordination with fast-acting DC breakers |
| Tvj max | 160 °C - allows operation in high-ambient environments such as under-hood traction systems |
Pinout & Package
Package: Press-pack, double-sided cooled, stud-mounted rectifier diode with isolated anode and cathode terminals. Requires 10–24 kN clamping force and achieves 25 mm creepage distance. Weight: 285 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Stud) | High-side current entry point | Directly bolted to heatsink; carries full forward current into device; electrically isolated from mounting surface |
| Cathode (Stud) | Low-side current exit point | Opposite-side stud; completes current path; requires separate heatsink interface or busbar connection |
Key Features
| Feature | Design Value |
|---|---|
| Double-sided thermal interface | Reduces total thermal resistance by ≥40% vs. single-sided mounting, enabling higher power density in modular converters |
| High I²t rating | 1186 ×10³ A²s ensures robustness against repetitive line faults without thermal runaway |
| Low slope resistance | rT = 0.485 mΩ minimizes voltage droop and improves current sharing in parallel-connected strings |
| Controlled recovery charge | Qr < 100 µAs at −di/dt = 100 A/µs reduces snubber losses and EMI in phase-controlled rectifiers |
Applications
| Railway Traction Converter | Industrial HVDC Link Protection |
|---|---|
Use Scenario: Rectification of 2.5 kV AC catenary supply to DC link for asynchronous motor drives in mainline locomotives. IC Role / Device Role / Timing Role: Main power rectifier in 12-pulse Graetz bridge configuration, operating continuously at 850 A with 50 Hz input. Use Value: 3600 V VRRM margin accommodates 1.5× overvoltage transients; 0.038 °C/W RthJC sustains 160 °C junction temperature under forced-air cooling. | Use Scenario: Crowbar protection and pre-charging in ±1.5 kV bipolar HVDC transmission converter stations. IC Role / Device Role / Timing Role: Bidirectional snubber diode and fault-current path in thyristor-based valve modules. Use Value: 15.4 kA IFSM withstands DC pole-to-ground fault currents; low Qr limits turn-off voltage overshoot during commutation failure. |
| Medium-Voltage UPS Input Stage | Grid-Scale Static VAR Compensator |
Use Scenario: Front-end rectification in 6.6 kV industrial uninterruptible power supplies with active harmonic filtering. IC Role / Device Role / Timing Role: Uncontrolled rectifier in multi-level transformerless input stage, switching at line frequency only. Use Value: 1900 A IFRMS rating supports 1.25× overload for 10-minute ride-through; 160 °C Tvj max extends service life in sealed cabinet environments. | Use Scenario: Reactive power compensation via thyristor-switched reactors in 33 kV substation networks. IC Role / Device Role / Timing Role: Freewheeling and commutation diode in anti-parallel thyristor legs of TCR modules. Use Value: Analytical ZthJC model enables accurate thermal cycling prediction over 20-year field life; 25 mm creepage meets IEC 61800-5-1 pollution degree 3 requirements. |
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 |
|---|---|---|---|
| DD400N36K | Higher VRRM (4000 V), lower IFAVM (720 A @ 100 °C), same package footprint | Better suited for 3.6 kV+ systems but requires derating for 850 A continuous loads | Select when system overvoltage margin >400 V is critical and average current demand ≤720 A |
| D850N32TXPSA1 | Lower VRRM (3200 V), identical IFAVM (850 A), same thermal specs | Valid for 2.75 kV AC systems but fails safety margin in 3.3 kV traction applications | Select only if system peak reverse stress is confirmed ≤3200 V and no transient overshoot exceeds rating |
Compared with DD400N36K and D850N32TXPSA1, D850N36TXPSA1 uniquely balances 3600 V blocking with 850 A thermal capability - making it optimal for 3.3 kV rail converters where both voltage headroom and current density are simultaneously constrained.
Availability
D850N36TXPSA1 is available at Aetrix Electronics and suitable for railway traction converters, industrial HVDC link protection, and medium-voltage UPS input stages requiring stable component supply and long-term lifecycle support.
Supply support for D850N36TXPSA1 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 electronics, automotive ICs, and security solutions, with core expertise in high-reliability silicon and SiC devices.
D850N36TXPSA1 belongs to Infineon's IFBIP series of press-pack rectifier diodes, engineered for mission-critical industrial power conversion where thermal robustness, surge immunity, and long-term parameter stability are mandatory.
FAQ
What is the maximum allowable clamping force for D850N36TXPSA1?
The specified clamping force range is 10–24 kN. Applying less than 10 kN risks increased thermal resistance and premature failure due to poor interfacial contact; exceeding 24 kN may deform internal pressure contacts or fracture the ceramic housing. Torque values must be verified per the mechanical annex referenced in the datasheet (page 3).
Can D850N36TXPSA1 be used in single-sided cooling configurations?
Yes, but with significant thermal penalty: RthJC rises to 0.064 °C/W (anode-cooled) or 0.085 °C/W (cathode-cooled), reducing maximum sustainable IFAV by ~35% at TC = 100 °C. Derating curves for single-sided operation are provided on page 6 of the datasheet under "TC = f(IFAV)".
Does D850N36TXPSA1 have a specified reverse recovery time (trr)?
No - this device is a soft-recovery, non-fast-recovery rectifier optimized for line-frequency operation. Instead of trr, its behavior is characterized by recovered charge (Qr) and di/dt-dependent voltage overshoot. Qr is measured at 100 A/µs and ranges from 50 µAs (iF = 50 A) to 1000 µAs (iF = 1600 A), per page 7 of the datasheet.
Is D850N36TXPSA1 RoHS-compliant and halogen-free?
Per Infineon's product compliance documentation (document ID: PCN-2021-003), D850N36TXPSA1 conforms to RoHS Directive 2011/65/EU and is halogen-free per IEC 61249-2-21. Lead content is below 1000 ppm, and brominated flame retardants are absent. Full material declarations are available upon request through Aetrix's technical support portal.
D850N36TXPSA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- DO-200AB, B-PUK
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 3600 V
- Current - Average Rectified (Io):
- 850A
- Voltage - Forward (Vf) (Max) @ If:
- 1.28 V @ 850 A
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 50 mA @ 3600 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Clamp On
- Supplier Device Package:
- -
- Operating Temperature - Junction:
- -40°C ~ 160°C
D850N36TXPSA1 FAQ
1.How can I place an order for D850N36TXPSA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for D850N36TXPSA1 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 D850N36TXPSA1 reliable?
The price and inventory of D850N36TXPSA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for D850N36TXPSA1 is usually 5 days.
3.What payment methods are accepted for D850N36TXPSA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for D850N36TXPSA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for D850N36TXPSA1?
D850N36TXPSA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your D850N36TXPSA1 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 D850N36TXPSA1?
For technical support, including D850N36TXPSA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your D850N36TXPSA1 requirements.
6.How does Aetrix verify that D850N36TXPSA1 is sourced from the original manufacturer or authorized distributors?
All D850N36TXPSA1 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 D850N36TXPSA1 meets industry standards.
7.What is the process for return or replacement of D850N36TXPSA1?
All D850N36TXPSA1 units undergo pre-shipment inspection (PSI). If there is an issue with D850N36TXPSA1, 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 D850N36TXPSA1 part is unused and in its original packaging.
Return procedure for D850N36TXPSA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
D850N36TXPSA1 Tags
-
1N4448X-TP
Micro Commercial Co
-
1N4148WX-TP
Micro Commercial Co
-
1N4148TR
onsemi
-
MMSD4148T1G
onsemi
-
MMBD914LT3G
onsemi
-
BAS16HT1G
onsemi
-
1N914BWT
onsemi
-
BAS21LT1G
onsemi
-
LL4148
onsemi
-
BAS16LT1G
onsemi
-
MMSD914T1G
onsemi
-
BAV21W-7-F
Diodes Incorporated
Tech Hub
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…
Engineering guide to dynamic load response testing for high-current buck converters, covering load step setup, slew rate, Vcore undershoot, overshoot, recovery time, probe location, output capacitors a…
Engineering guide to output capacitor selection for ASIC Vcore rails, covering bulk capacitors, polymer capacitors, MLCC decoupling, DC bias, ESR, ESL, placement, transient response and substitution ri…
Engineering guide to high-current ASIC Vcore rails, covering 12-phase buck architecture, PMBus control, dynamic load testing, output capacitor networks, smart power stage selection, thermal design and …
Voltage regulator guide covering linear, LDO, 7805, Zener, adjustable, buck, VRM and alternator regulators, with design checks, testing methods, troubleshooting and datasheet-based selection.
Amplifier guide covering voltage, current and power amplification, gain, feedback, amplifier classes, audio and RF applications, op-amp circuits, transimpedance amplifiers, datasheet selection and trou…
