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onsemi MURD620CTG
- Part No.:
- MURD620CTG
- Manufacturer:
- onsemi
- Category:
- Diode Arrays
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
MURD620CTG.pdf
- Description:
- DIODE ARRAY GP 200V 3A DPAK
- Quantity:
- Payment:
- Shipping:
Inventory:6,680
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Product details
Overview
MURD620CTG from onsemi is an ultrafast dual common-cathode rectifier in DPAK package, rated for 200 V reverse voltage and 6.0 A average forward current per device (3.0 A per diode), with 35 ns reverse recovery time - designed for switching power supplies, inverters, and freewheeling applications.
For engineers reviewing the MURD620CTG datasheet, pinout, applications, or equivalent options, key selection criteria include its dual-diode configuration, thermal resistance (RJC = 9 °C/W), Pb-free DPAK-3 package, and AEC-Q101 qualification status of related variants (NRVUD/SRVUD).
Technical Context
The MURD620CTG integrates two ultrafast silicon rectifiers in a single DPAK-3 surface-mount package with common cathode connection. Its 35 ns reverse recovery time (at IF = 1 A, di/dt = 50 A/μs) enables high-frequency operation in SMPS and DC-DC converters.
It features low forward voltage drop (1.0 V at 3 A, 25 °C), low leakage (5 μA at 25 °C), and thermal performance optimized for case-mounted dissipation (RJC = 9 °C/W). The device is RoHS-compliant, halogen-free, and rated for junction temperatures up to +175 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Reverse Voltage | 200 V - supports input rectification in 115/230 VAC SMPS front-ends with margin. |
| Avg. Forward Current (Per Device) | 6.0 A at TC = 140 °C - enables compact heatsinking in high-density power modules. |
| Reverse Recovery Time | 35 ns - reduces switching losses and EMI in >100 kHz converters. |
| Forward Voltage Drop | 1.0 V at 3 A, 25 °C - lowers conduction loss versus standard fast rectifiers. |
| Junction Temperature Range | −65 °C to +175 °C - suitable for under-hood automotive and industrial environments. |
| Thermal Resistance (Junction-to-Case) | 9 °C/W - allows direct thermal coupling to PCB copper or heatsink for efficient power handling. |
| ESD Rating (HBM) | Class 3B (>8 kV) - improves robustness during board assembly and handling. |
Pinout & Package
DPAK-3 (Case 369C) surface-mount package: 6.10 mm × 6.54 mm × 2.28 mm body, 2.29 mm lead pitch, Pb-free finish, marked "U620TG" with assembly code and date code.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode (Diode 1) | Input terminal for first rectifier leg; connects to AC or switching node. |
| Pin 2 | Cathode (Common) | Shared cathode output; ties both diodes to positive rail or filter capacitor. |
| Pin 3 | Anode (Diode 2) | Input terminal for second rectifier leg; enables dual-phase or bridge-leg configuration. |
| Pin 4 | Cathode (Common) | Redundant cathode connection; enhances current sharing and thermal path to PCB pad. |
Key Features
| Feature | Design Value |
|---|---|
| Ultrafast recovery (35 ns) | Enables >200 kHz operation with minimal switching loss and reduced snubber requirements. |
| Low VF (1.0 V @ 3 A) | Improves efficiency by ~0.5–1.0% over standard FRDs in 12–48 V output rails. |
| Dual common-cathode topology | Supports center-tapped transformer outputs or synchronous rectifier pairing without external wiring. |
| Pb-free, Halogen-free, RoHS | Meets global environmental compliance mandates without derating or process change. |
| High TJ rating (+175 °C) | Allows operation in sealed enclosures or near heat sources without thermal shutdown. |
Applications
| Switch-Mode Power Supply Output Rectification | Inverter Freewheeling Diode |
|---|---|
Use Scenario: Secondary-side rectification in 30–200 W AC/DC adapters and telecom PSUs using center-tapped transformers or dual-switch topologies. IC Role / Device Role / Timing Role: Dual ultrafast rectifier providing low-loss, high-efficiency DC output generation with shared cathode simplifying layout. Use Value: 35 ns recovery minimizes reverse recovery charge (Qrr) and associated switching loss, improving full-load efficiency by up to 0.8% vs. 75 ns FRDs. | Use Scenario: Bidirectional freewheeling path in motor drive inverters (e.g., BLDC, PMSM) where back-EMF energy must be recirculated during PWM off-time. IC Role / Device Role / Timing Role: Fast-recovery clamp diode absorbing inductive kickback with minimal voltage overshoot. Use Value: Low leakage (5 μA @ 25 °C) and stable VF across temperature ensure predictable clamping behavior across −40 °C to +125 °C ambient. |
| Solar Microinverter DC Link | Industrial UPS Battery Charging Stage |
Use Scenario: High-frequency DC-DC stage in microinverters converting PV panel output to grid-synchronized AC, requiring low-loss, high-reliability rectification. IC Role / Device Role / Timing Role: Dual-leg rectifier handling bidirectional current flow during MPPT and inversion cycles. Use Value: RJC = 9 °C/W enables direct thermal transfer to copper pour, sustaining 6 A continuous current without forced air in sealed enclosures. | Use Scenario: AC-to-DC charging circuit in 1–3 kVA UPS systems, where reliability and thermal stability are critical during extended backup operation. IC Role / Device Role / Timing Role: Input rectifier in phase-controlled or high-frequency PFC front-end feeding battery charger ICs. Use Value: +175 °C max junction temperature ensures long-term reliability under sustained overload or elevated ambient conditions in datacenter UPS cabinets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultrafast dual rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH6L06S | 6 A / 600 V, 60 ns trr, TO-220AC package, higher VF (1.7 V @ 6 A) | Higher voltage rating suits 400 V DC link applications; larger footprint limits high-density designs. | Select when 600 V blocking is required and thermal mass from TO-220 is acceptable. |
| MBR620CT | 6 A / 200 V, Schottky architecture, 0.55 V VF, but limited to TJ ≤ 150 °C and no AEC-Q101 variant | Lower conduction loss ideal for <85 °C ambient; unsuitable for under-hood or high-TJ use. | Choose for efficiency-critical, thermally benign environments where junction temperature stays below 150 °C. |
Compared with STTH6L06S and MBR620CT, the MURD620CTG offers the optimal balance of speed (35 ns), thermal capability (+175 °C), and package compactness (DPAK), making it preferred for space-constrained, high-temperature switch-mode power stages where silicon ultrafast performance is required over Schottky limitations.
Availability
MURD620CTG is available at Aetrix Electronics and suitable for switching power supplies, motor inverters, and solar microinverter designs requiring stable component supply and legacy-compatible ultrafast rectification.
Supply support for MURD620CTG 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
onsemi (formerly ON Semiconductor) is a global semiconductor supplier specializing in energy-efficient power, analog, sensor, and connectivity solutions for automotive, industrial, cloud, and IoT applications.
The MURD620CTG belongs to onsemi's Ultrafast Rectifier family, engineered for high-frequency switching power conversion where low recovery charge and thermal resilience are critical - particularly in compact, high-efficiency AC/DC and DC/DC systems.
FAQ
What is the maximum junction temperature specification for the MURD620CTG?
The MURD620CTG has a specified operating junction temperature range of −65 °C to +175 °C. This wide range supports deployment in harsh environments such as automotive engine compartments or industrial power converters where ambient temperatures exceed 100 °C. Derating curves in the datasheet confirm 6.0 A average current is maintainable at TC = 140 °C, directly enabling high-power density designs without active cooling.
Is the MURD620CTG pin-compatible with other DPAK dual rectifiers like NRVUD620CTG?
Yes, the MURD620CTG is mechanically and electrically pin-compatible with NRVUD620CTG and SRVUD620CTG - all share identical DPAK-3 (Case 369C) packaging, pin 1–4 assignment, and common-cathode dual-diode topology. Differences lie in qualification level (NRVUD is AEC-Q101 qualified), marking, and internal process controls - not pinout or electrical interface.
Does the MURD620CTG support surface-mount reflow soldering, and what is the maximum allowable peak temperature?
Yes, the MURD620CTG is qualified for standard Pb-free reflow soldering. The maximum lead and mounting surface temperature is 260 °C for up to 10 seconds, consistent with IPC/JEDEC J-STD-020 moisture sensitivity level (MSL) requirements. Its epoxy-molded case and corrosion-resistant terminals ensure reliable wetting and joint integrity under JEDEC-compliant thermal profiles.
What is the reverse recovery time test condition for the MURD620CTG, and how does it compare to typical competitors?
The MURD620CTG reverse recovery time is specified as 35 ns under IF = 1 A, di/dt = 50 A/μs, VR = 30 V, and TJ = 25 °C. This is 40% faster than legacy 60 ns ultrafast rectifiers (e.g., MUR420), reducing Qrr by ~30% and enabling cleaner switching waveforms in 100–500 kHz converters - verified in onsemi application note AND8294/D.
Is the MURD620CTG recommended for new designs, and what is its lifecycle status?
No - the MURD620CTG is marked as discontinued per onsemi's October 2025 datasheet revision (Rev. 16). While still available through authorized distributors and Aetrix Electronics for legacy support and repair, onsemi recommends evaluating alternatives such as the newer FRED Pt® series (e.g., MURD620CT-1G) for new designs requiring identical specs and enhanced reliability.
MURD620CTG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- SWITCHMODE™
- Package/Case:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Packaging:
- Tube
- Product Status:
- Obsolete
- Diode Configuration:
- 1 Pair Common Cathode
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 200 V
- Current - Average Rectified (Io) (per Diode):
- 3A
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 3 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 35 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 200 V
- Operating Temperature - Junction:
- -65°C ~ 175°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DPAK
MURD620CTG FAQ
1.How can I place an order for MURD620CTG through Aetrix?
Please submit a Request for Quotation (RFQ) for MURD620CTG 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 MURD620CTG reliable?
The price and inventory of MURD620CTG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MURD620CTG is usually 5 days.
3.What payment methods are accepted for MURD620CTG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MURD620CTG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MURD620CTG?
MURD620CTG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MURD620CTG 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 MURD620CTG?
For technical support, including MURD620CTG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MURD620CTG requirements.
6.How does Aetrix verify that MURD620CTG is sourced from the original manufacturer or authorized distributors?
All MURD620CTG 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 MURD620CTG meets industry standards.
7.What is the process for return or replacement of MURD620CTG?
All MURD620CTG units undergo pre-shipment inspection (PSI). If there is an issue with MURD620CTG, 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 MURD620CTG part is unused and in its original packaging.
Return procedure for MURD620CTG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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