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STMicroelectronics STTH506B-TR
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- Part No.:
- STTH506B-TR
- Manufacturer:
- STMicroelectronics
- Category:
- Single Diodes
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
STTH506B-TR.pdf
- Description:
- DIODE GEN PURP 600V 5A DPAK
- Quantity:
- Payment:
- Shipping:
Inventory:3,601
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Product details
Overview
STTH506B-TR from STMicroelectronics is a 600 V, 5 A ultrafast high-voltage rectifier diode in DPAK package, featuring 30 ns reverse recovery time, 1.1 V typical forward voltage at 150 °C, and 3.5 °C/W junction-to-case thermal resistance. It is designed for high-frequency switching power supplies and industrial AC/DC converters where low conduction and switching losses are critical.
For engineers reviewing the STTH506B-TR datasheet, STTH506B-TR pinout, STTH506B-TR application, or STTH506B-TR equivalent, key selection criteria include reverse recovery time (trr ≤ 30 ns), peak repetitive reverse voltage (VRRM = 600 V), thermal resistance (Rth(j-c) = 3.5 °C/W), and DPAK package compatibility with surface-mount reflow and thermal pad layout.
Technical Context
The STTH506B-TR employs ST's Turbo 2 silicon technology to achieve soft reverse recovery with low IRM (≤ 5 A) and Qrr (175 nC), minimizing EMI and voltage overshoot in hard-switched topologies. Its 175 °C maximum junction temperature enables operation in thermally constrained industrial environments without derating.
Designed for unidirectional current flow in flyback, PFC, and output rectification stages, it delivers stable VF performance across temperature (1.10–1.40 V at 150 °C, IF = 5 A) and supports dIF/dt up to −100 A/µs while maintaining controlled softness factor-critical for snubberless designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 600 V - Withstands peak reverse voltage in 400 VAC input rectification and boost PFC stages |
| IF(AV) | 5 A - Sustains continuous forward current at Tc = 145 °C, suitable for 60–100 W SMPS outputs |
| trr (max) | 30 ns - Enables >100 kHz switching with minimal turn-off loss and reduced EMI generation |
| VF (typ @ 150 °C) | 1.10 V - Low conduction loss improves efficiency in high-temperature industrial enclosures |
| Rth(j-c) | 3.5 °C/W - Allows direct thermal coupling to PCB copper pour for passive cooling in space-constrained layouts |
| Qrr | 175 nC - Predictable reverse recovery charge simplifies snubber design and reduces stress on switching MOSFETs |
| Tj (max) | 175 °C - Supports operation in sealed industrial drives and motor control cabinets without active cooling |
Pinout & Package
DPAK (TO-252) package with exposed thermal pad on underside for enhanced heat dissipation; single-diode configuration with anode and cathode terminals only.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Forward current entry | Connected to AC input or transformer secondary; requires low-inductance trace routing to minimize ringing |
| Cathode (Pin 2) | Forward current exit | Connected to output capacitor or DC bus; serves as primary heat path via thermal pad to PCB copper |
| Thermal Pad (Pin 3) | Junction-to-PCB thermal interface | Must be soldered to ≥ 250 mm² copper area (2 oz) for rated Rth(j-c) = 3.5 °C/W performance |
Key Features
| Feature | Design Value |
|---|---|
| Ultrafast soft recovery | trr ≤ 30 ns with softness factor >1, reducing voltage spikes and EMI in high-dI/dt circuits |
| Low thermal resistance | Rth(j-c) = 3.5 °C/W enables 5 A operation with <25 K rise above PCB temperature |
| High-temperature reliability | Rated for continuous operation up to 175 °C junction temperature per JEDEC JESD22-A108 |
| ECOPACK®2 compliance | Halogen-free, RoHS-compliant epoxy meets UL94 V0 flammability rating |
| Low leakage at high Tj | IR ≤ 130 µA at 150 °C and VR = VRRM ensures stable blocking in hot ambient conditions |
Applications
| Server Power Supply Rectification | Industrial Motor Drive Input Stage |
|---|---|
Use Scenario: Output rectification in 1U server PSUs operating at 100–200 kHz with 48 V DC output. IC Role / Device Role / Timing Role: High-efficiency freewheeling diode in synchronous rectified LLC resonant converter. Use Value: 30 ns trr and 1.1 V VF at 150 °C reduce conduction + switching losses by ~12% vs. standard fast recovery diodes. | Use Scenario: AC line rectification in 3-phase VFD front-end with regenerative braking. IC Role / Device Role / Timing Role: Unidirectional current path in 6-pulse bridge feeding DC link capacitor bank. Use Value: 600 V VRRM withstands transient overvoltages during regeneration; 175 °C Tj rating avoids derating in enclosed drive cabinets. |
| Solar Microinverter DC Link | Medical Imaging Power Module |
Use Scenario: Boost stage rectification in 300–400 V DC-link microinverters with MPPT tracking. IC Role / Device Role / Timing Role: High-voltage output diode in interleaved boost converter operating at 80–120 kHz. Use Value: Low Qrr (175 nC) minimizes switching loss in high-frequency boost, improving conversion efficiency >98.2%. | Use Scenario: Isolated auxiliary supply rectification in CT scanner power subsystems requiring low EMI. IC Role / Device Role / Timing Role: Soft-recovery diode in 24 V/5 A isolated flyback secondary side. Use Value: Soft reverse recovery (IRM ≤ 5 A) suppresses conducted emissions, easing CISPR 11 Class B compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultrafast high-voltage rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor MUR560G | 600 V, 5 A, trr = 35 ns (max), VF = 1.85 V (typ @ 25 °C), TO-220AC package | Higher VF at elevated temperature; requires heatsink due to TO-220AC thermal resistance (~5.0 °C/W) | Select when through-hole assembly or legacy footprint compatibility is required |
| Vishay VS-5EY60 | 600 V, 5 A, trr = 45 ns (max), VF = 1.25 V (typ @ 125 °C), DPAK package | Slower recovery increases switching loss in >100 kHz designs; lower Tj max (150 °C) | Select when cost sensitivity outweighs efficiency targets in <80 kHz industrial SMPS |
Compared with MUR560G and VS-5EY60, the STTH506B-TR offers superior thermal performance (3.5 °C/W), tighter trr control (≤30 ns), and higher junction temperature capability (175 °C), making it optimal for compact, high-frequency, high-ambient-temperature applications where board space and passive cooling are constrained.
Availability
STTH506B-TR is available at Aetrix Electronics and suitable for server power supplies, industrial motor drives, solar microinverters, and medical imaging power modules requiring stable component supply and long-term industrial lifecycle support.
Supply support for STTH506B-TR 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, designing and manufacturing analog, power, MCU, and sensor solutions for automotive, industrial, and consumer markets.
The STTH series belongs to ST's high-voltage power diode product line, engineered specifically for high-efficiency, high-reliability rectification in industrial switching power supplies and motor control systems.
FAQ
What is the maximum allowable case temperature for continuous operation?
The STTH506B-TR is rated for Tc = 145 °C at IF(AV) = 5 A. Exceeding this temperature requires current derating per Figure 1 in the datasheet. The device's 175 °C Tj(max) allows safe operation with proper PCB thermal design even when ambient exceeds 85 °C.
Is the DPAK thermal pad electrically isolated?
No-the DPAK thermal pad of the STTH506B-TR is internally connected to the cathode terminal. PCB layout must ensure the thermal pad is routed to the cathode net and not shorted to ground or other potentials unless cathode is at system ground potential.
Does STTH506B-TR require a snubber circuit in typical 100 kHz flyback designs?
Snubber use depends on circuit layout and MOSFET characteristics, but STTH506B-TR's soft recovery (IRM ≤ 5 A, Qrr = 175 nC) often eliminates the need for external RC snubbers in well-layout flyback converters operating below 120 kHz, reducing component count and board area.
Can STTH506B-TR replace STTH506D in existing TO-220AC designs?
No-STTH506B-TR uses DPAK (surface-mount) packaging, while STTH506D uses TO-220AC (through-hole). Direct replacement requires PCB redesign for footprint, thermal pad layout, and reflow profile. Electrical specs are identical, but thermal performance differs due to package geometry and mounting method.
STTH506B-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 600 V
- Current - Average Rectified (Io):
- 5A
- Voltage - Forward (Vf) (Max) @ If:
- 1.85 V @ 5 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 50 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 600 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DPAK
- Operating Temperature - Junction:
- 175°C (Max)
STTH506B-TR FAQ
1.How can I place an order for STTH506B-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STTH506B-TR 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 STTH506B-TR reliable?
The price and inventory of STTH506B-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STTH506B-TR is usually 5 days.
3.What payment methods are accepted for STTH506B-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STTH506B-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STTH506B-TR?
STTH506B-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STTH506B-TR 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 STTH506B-TR?
For technical support, including STTH506B-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STTH506B-TR requirements.
6.How does Aetrix verify that STTH506B-TR is sourced from the original manufacturer or authorized distributors?
All STTH506B-TR 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 STTH506B-TR meets industry standards.
7.What is the process for return or replacement of STTH506B-TR?
All STTH506B-TR units undergo pre-shipment inspection (PSI). If there is an issue with STTH506B-TR, 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 STTH506B-TR part is unused and in its original packaging.
Return procedure for STTH506B-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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