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Diodes Incorporated DSR8U600
- Part No.:
- DSR8U600
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- TO-220-2
- Datasheet:
-
DSR8U600.pdf
- Description:
- DIODE GEN PURP 600V 8A TO220AC
- Quantity:
- Payment:
- Shipping:
Inventory:8,659
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Product details
Overview
DSR8U600 from Diodes Incorporated is an ultra-fast recovery silicon rectifier diode optimized as a boost diode in active PFC circuits, featuring 600 V peak repetitive reverse voltage (VRRM), 8 A average forward current (IO), 23–28 ns reverse recovery time (trr), soft recovery (S = 1.0 @ 25°C), and TO-220AC package with cathode-anode-cathode pinout.
For engineers reviewing the DSR8U600 datasheet, DSR8U600 pinout, DSR8U600 application, or DSR8U600 equivalent, key selection criteria include trr < 30 ns for high-frequency switching, soft recovery to minimize EMI in AC/DC front-ends, thermal resistance of 2°C/W (junction-to-case), and 85 A non-repetitive surge rating for line transient robustness.
Technical Context
The DSR8U600 employs Diodes Inc.'s proprietary DIODESTAR™ process to achieve ultra-fast, soft-recovery behavior-critical for reducing switching losses and EMI in continuous conduction mode (CCM) PFC stages. Its 23 ns typical trr and controlled softness factor (S = 1.0 at 25°C, 0.6 at 125°C) ensure predictable turn-off dynamics under varying temperature and di/dt conditions.
Designed for high-temperature stability, it maintains rated performance across –65°C to +175°C junction range, with leakage current limited to 20 µA at 600 V and 25°C, rising to 200 µA at 125°C-enabling reliable operation in thermally constrained industrial power supplies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 600 V - Withstands peak line transients in universal-input (85–265 VAC) PFC stages without breakdown. |
| IO | 8 A - Supports continuous output power up to ~1 kW in single-phase boost PFC designs. |
| trr | 23–28 ns - Enables efficient operation at 65–100 kHz switching frequencies with minimal reverse recovery loss. |
| IFSM | 85 A - Handles inrush and overload surges without degradation in 8.3 ms half-sine waveform. |
| RθJC | 2 °C/W - Requires minimal heatsinking for thermal management when mounted on standard black aluminum (45×20×12 mm). |
| VF | 1.3–1.8 V @ 8 A, 125°C - Low forward drop reduces conduction loss and improves system efficiency at elevated temperatures. |
| Qrr | 74–185 nC - Charge varies with temperature; lower Qrr at 25°C reduces turn-on loss in synchronous rectification-assisted topologies. |
Pinout & Package
Package: TO-220AC - Molded plastic case (UL 94V-0), matte tin-plated copper leadframe, lead-free and RoHS compliant. Mounting tab is electrically connected to cathode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Cathode | Anode-side connection point; electrically tied to metal tab for thermal and electrical grounding in PFC boost configuration. |
| Pin 2 | Anode | Input node connecting to boost inductor; carries full AC line rectified current during conduction phase. |
| Pin 3 | Cathode | Output node connecting to bulk capacitor; dual cathode pins provide low-inductance return path and enhanced current sharing. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-fast trr < 30 ns | Reduces switching loss and EMI generation in high-frequency PFC controllers (e.g., UCC28070, ICE3PCS01). |
| Soft recovery (S ≥ 0.6) | Minimizes voltage overshoot and ringing during diode turn-off, easing EMI filter design and improving reliability. |
| High-temperature leakage control | IR ≤ 200 µA @ 600 V / 125°C ensures stable blocking performance in enclosed, high-ambient environments. |
| 85 A IFSM rating | Withstands cold-start inrush and short-term overloads without parametric shift or bond-wire failure. |
| TO-220AC thermal interface | 2°C/W RθJC enables direct mounting to heatsinks without thermal pads-reducing thermal resistance by ~0.5°C/W vs. TO-220AB. |
Applications
| Server Power Supply | Industrial AC/DC Adapter |
|---|---|
Use Scenario: 1U 1 kW redundant power supply operating at 100 kHz CCM PFC stage with universal input (85–265 VAC). IC Role / Device Role / Timing Role: Boost rectifier diode conducting during inductor discharge phase; defines PFC stage efficiency and thermal footprint. Use Value: 23 ns trr and soft recovery reduce MOSFET turn-on loss and snubber stress, enabling >96% PFC efficiency at full load. | Use Scenario: DIN-rail mounted 48 V/20 A industrial adapter with high ambient (70°C) and long service life requirement. IC Role / Device Role / Timing Role: Primary-side output rectifier in boost-derived topology; handles continuous 8 A DC output with 85 A surge tolerance. Use Value: Stable VF (1.3–1.8 V) across –40°C to +125°C junction range ensures consistent regulation and thermal margin over lifetime. |
| LED Driver Power Stage | Telecom Rectification Module |
Use Scenario: High-bay LED driver with active PFC and 300 W output, operating in unventilated enclosures. IC Role / Device Role / Timing Role: Critical boost diode where EMI compliance (CISPR-15 Class B) depends on clean turn-off behavior. Use Value: Soft recovery (S = 1.0 @ 25°C) suppresses high-frequency ringing, reducing common-mode noise and simplifying EMI filter component count. | Use Scenario: -48 V telecom rectifier module requiring 10-year field reliability and wide temperature derating (–40°C to +70°C ambient). IC Role / Device Role / Timing Role: Input rectifier in hybrid bridge-boost architecture handling 600 V transients per GR-1089-CORE. Use Value: 600 V VRRM and 200 µA IR @ 125°C ensure no leakage-induced drift or thermal runaway during extended high-temp operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-fast recovery rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH8R06D | 600 V VRRM, 8 A IO, trr = 35 ns (typ), VF = 1.7 V @ 8 A, 150°C | Higher trr increases switching loss in >80 kHz PFC; softer recovery not specified | Acceptable where EMI margin is relaxed and thermal design accommodates higher VF |
| IXYS MUR860E | 600 V VRRM, 8 A IO, trr = 30 ns (max), VF = 1.85 V @ 8 A, 125°C, TO-220AC | Slightly higher VF and less consistent softness; Qrr = 110 nC @ 25°C | Valid for cost-sensitive designs where 5–10% efficiency penalty is acceptable |
Compared with STTH8R06D and MUR860E, the DSR8U600 delivers superior high-frequency efficiency via lower trr and quantified softness-directly reducing MOSFET turn-on loss and EMI filter burden in compact, high-density PFC stages.
Availability
DSR8U600 is available at Aetrix Electronics and suitable for server power supplies, industrial AC/DC adapters, LED driver power stages, and telecom rectification modules requiring stable component supply and legacy-design continuity.
Supply support for DSR8U600 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-performance power management, signal integrity, and protection solutions.
The DSR8U600 belongs to Diodes' DIODESTAR™ ultra-fast rectifier product line, engineered specifically for high-efficiency, high-frequency PFC and SMPS applications demanding low trr, soft recovery, and robust thermal performance.
FAQ
Is the DSR8U600 still in active production?
No-the official Diodes Incorporated datasheet (DS35011 Rev. 4, October 2013) explicitly labels DSR8U600 as "OBSOLETE PART." It remains available through authorized distributors for legacy design support and repair, but no new wafer fabrication or packaging is scheduled.
What is the thermal resistance from junction to case (RθJC), and how is it measured?
RθJC is 2°C/W, measured with a black aluminum heatsink (45 mm × 20 mm × 12 mm) attached to the TO-220AC metal tab. This value assumes full surface contact and proper mounting torque; actual thermal performance may vary ±0.3°C/W depending on interface material and flatness.
Can the DSR8U600 be used in synchronous rectification topologies?
No-it is a unidirectional silicon PN junction rectifier, not a MOSFET-based synchronous device. While its low Qrr and soft recovery reduce body-diode conduction loss in SR-assisted converters, it cannot replace a gate-driven SR FET and lacks bidirectional control capability.
Why does the datasheet list two cathode pins (Pin 1 and Pin 3)?
Pin 1 and Pin 3 are internally connected to the same cathode structure and the metal tab. This dual-pin configuration lowers parasitic inductance and improves current sharing in high-di/dt applications-critical for minimizing voltage spikes during fast turn-off in PFC boost diodes.
DSR8U600 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- DIODESTAR™
- Package/Case:
- TO-220-2
- Packaging:
- Tube
- Product Status:
- Obsolete
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 600 V
- Current - Average Rectified (Io):
- 8A
- Voltage - Forward (Vf) (Max) @ If:
- 2.5 V @ 8 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 28 ns
- Current - Reverse Leakage @ Vr:
- 20 µA @ 600 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220AC
- Operating Temperature - Junction:
- -65°C ~ 175°C
DSR8U600 FAQ
1.How can I place an order for DSR8U600 through Aetrix?
Please submit a Request for Quotation (RFQ) for DSR8U600 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 DSR8U600 reliable?
The price and inventory of DSR8U600 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DSR8U600 is usually 5 days.
3.What payment methods are accepted for DSR8U600?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DSR8U600 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DSR8U600?
DSR8U600 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DSR8U600 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 DSR8U600?
For technical support, including DSR8U600 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DSR8U600 requirements.
6.How does Aetrix verify that DSR8U600 is sourced from the original manufacturer or authorized distributors?
All DSR8U600 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 DSR8U600 meets industry standards.
7.What is the process for return or replacement of DSR8U600?
All DSR8U600 units undergo pre-shipment inspection (PSI). If there is an issue with DSR8U600, 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 DSR8U600 part is unused and in its original packaging.
Return procedure for DSR8U600:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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