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Diodes Incorporated SR506-T
- Part No.:
- SR506-T
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
SR506-T.pdf
- Description:
- DIODE SCHOTTKY 60V 5A DO201AD
- Quantity:
- Payment:
- Shipping:
Inventory:9,185
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Product details
Overview
SR506-T from Diodes Incorporated is a high-current Schottky barrier rectifier in DO-201AD package, rated for 60 V maximum recurrent peak reverse voltage, 5.0 A average forward current at 90°C lead temperature, and 150 A non-repetitive surge current (8.3 ms half-sine). It delivers low forward voltage drop (0.67 V @ 5.0 A), low thermal resistance (10 K/W junction-to-lead), and is used in DC-DC converter output stages and high-efficiency AC/DC secondary-side rectification.
For engineers reviewing the SR506-T datasheet, SR506-T pinout, SR506-T application, or SR506-T equivalent, key selection criteria include verified VF vs. IF curve at 25°C and 100°C, junction capacitance (400 pF @ 4 V), surge robustness under JEDEC Method, and UL 94V-0 flammability compliance for industrial power supplies.
Technical Context
This Schottky rectifier employs a guard-ringed die structure to enhance transient voltage immunity and suppress leakage under high dv/dt conditions. Its low forward voltage minimizes conduction loss in high-frequency switching topologies, while the 10 K/W junction-to-lead thermal resistance enables reliable operation with minimal heatsinking on vertical PCB mounting (9.5 mm lead length).
The device exhibits 400 pF typical junction capacitance at 1 MHz and 4.0 V reverse bias-critical for EMI filtering and snubber design-and maintains stable reverse leakage (<50 µA @ 25°C, <50 mA @ 100°C) across its full operating range of –65°C to +150°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 60 V - Maximum blocking capability for 60 Hz or high-frequency rectification without avalanche breakdown |
| I(AV) | 5.0 A @ TL = 90°C - Continuous DC output current rating with standard 9.5 mm axial lead heatsinking |
| VF | 0.67 V @ 5.0 A - Low conduction loss enabling >92% efficiency in 12 V output DC-DC converters |
| IFSM | 150 A (8.3 ms half-sine) - Withstands inrush and fault currents in SMPS secondary circuits |
| RθJL | 10 K/W - Enables direct lead-mount thermal path; no PCB copper pour required for nominal load |
| CJ | 400 pF @ 1 MHz, 4 V - Limits high-frequency noise coupling; informs snubber component selection |
| TJ/TSTG | –65°C to +150°C - Supports operation in automotive under-hood and industrial motor drive environments |
Pinout & Package
Package: DO-201AD molded plastic case with axial leads, UL 94V-0 rated, cathode indicated by band. Mounting position unrestricted; weight ≈1.20 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead 1) | Current entry point during forward conduction | Connected to transformer secondary or switch node; must handle 5 A continuous and 150 A surge |
| Cathode (Lead 2, banded) | Current exit point; common reference for output rail | Directly ties to output capacitor negative and ground plane; low-inductance layout critical |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring structure | Suppresses edge leakage and improves dv/dt immunity in noisy switching environments |
| Low forward voltage (0.67 V) | Reduces power dissipation by ~1.2 W vs. silicon diode at 5 A, lowering thermal stress |
| High surge capacity (150 A) | Survives repeated cold-start inrush in 48 V telecom power systems without degradation |
| UL 94V-0 plastic case | Meets flame-retardancy requirements for enclosed industrial power supplies and LED drivers |
| DO-201AD axial package | Enables manual or wave soldering; compatible with legacy through-hole assembly lines |
Applications
| Server PSU Secondary Rectification | Industrial DC-DC Converter Output |
|---|---|
Use Scenario: High-density 48 V input, 12 V/50 A output server power supply using synchronous rectification assist. IC Role / Device Role / Timing Role: Primary unidirectional power path for secondary-side rectification; paired with controller IC for gate timing. Use Value: 0.67 V VF reduces conduction loss by 35% versus comparable 60 V Si diode, improving full-load efficiency from 91.2% to 92.8%. | Use Scenario: 24 V input, 5 V/10 A isolated DC-DC module for PLC I/O modules. IC Role / Device Role / Timing Role: Freewheeling and rectifying diode in flyback secondary winding. Use Value: 150 A IFSM withstands 2× rated output surges during short-circuit recovery, eliminating need for derating. |
| Solar Microinverter DC Link | LED Driver Secondary Side |
Use Scenario: 60 V-rated DC link stage in string-level microinverter with MPPT tracking. IC Role / Device Role / Timing Role: Bidirectional clamp and freewheeling path during high-frequency H-bridge commutation. Use Value: 400 pF CJ limits displacement current during 100 kHz switching, reducing EMI filter size by 30%. | Use Scenario: Constant-current LED driver for street lighting with 36–48 V input and 24 V/3 A output. IC Role / Device Role / Timing Role: Output rectifier in quasi-resonant flyback topology. Use Value: –65°C to +150°C operating range ensures reliability in outdoor enclosures exposed to desert or arctic ambient extremes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SB560-T | Same VRRM (60 V), lower VF (0.58 V @ 5 A), DO-201AD package, higher IFSM (200 A) | Better efficiency in high-duty-cycle converters; tighter thermal margin at 100°C ambient | Preferred where <0.6 V VF is required and surge margin exceeds 150 A |
| SS56-E3/57T | 60 V VRRM, 5 A I(AV), but TO-220AC package; higher RθJA (40 K/W), no guard ring | Requires heatsink; unsuitable for compact axial layouts or high-dv/dt noise environments | Select only when board space allows TO-220 mounting and thermal budget permits higher junction rise |
Compared with SB560-T and SS56-E3/57T, SR506-T offers balanced surge robustness and axial-mount compatibility without requiring heatsinking, making it optimal for cost-sensitive, space-constrained industrial power supplies where guard-ring ESD immunity is valued.
Availability
SR506-T is available at Aetrix Electronics and suitable for server power supplies, industrial DC-DC converters, and solar microinverters requiring stable component supply and long-term obsolescence management.
Supply support for SR506-T 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, headquartered in Plano, Texas, with design centers across Asia and manufacturing in China, Taiwan, and Malaysia.
The SR502–SR506 series belongs to Diodes' high-current Schottky rectifier product line, engineered specifically for high-efficiency secondary-side rectification in switched-mode power supplies up to 100 kHz switching frequency.
FAQ
Is SR506-T suitable for synchronous rectification designs?
No-SR506-T is a passive Schottky diode, not a MOSFET-based synchronous rectifier. It lacks gate control and cannot be actively switched. It serves as a freewheeling or rectifying element in non-synchronous topologies like standard flyback or forward converters where simplicity and cost outweigh efficiency gains from active switching.
What is the maximum allowable lead temperature during soldering?
The SR506-T supports wave soldering per MIL-STD-202, Method 208. Peak lead temperature must not exceed 260°C for ≤10 seconds. Exceeding this risks internal bond wire damage and increased IR due to thermal stress on the Schottky junction.
Does SR506-T have AEC-Q101 qualification for automotive use?
No-SR506-T is not AEC-Q101 qualified. While its operating temperature range (–65°C to +150°C) overlaps with automotive under-hood requirements, Diodes Incorporated does not list it in their AEC-Q101-certified portfolio. For automotive applications, SB560-AU or APx60 series are designated alternatives.
Can SR506-T replace SR504-T in an existing design?
Yes-with verification of voltage margin. SR506-T has identical package, pinout, and thermal characteristics as SR504-T but raises VRRM from 40 V to 60 V. This provides additional safety margin against voltage transients in 48 V systems, though forward voltage increases slightly (0.67 V vs. 0.55 V), raising conduction loss by ~0.6 W at 5 A.
SR506-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- DO-201AD, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 60 V
- Current - Average Rectified (Io):
- 5A
- Voltage - Forward (Vf) (Max) @ If:
- 670 mV @ 5 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 1 mA @ 60 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-201AD
- Operating Temperature - Junction:
- -65°C ~ 150°C
SR506-T FAQ
1.How can I place an order for SR506-T through Aetrix?
Please submit a Request for Quotation (RFQ) for SR506-T 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 SR506-T reliable?
The price and inventory of SR506-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SR506-T is usually 5 days.
3.What payment methods are accepted for SR506-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SR506-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SR506-T?
SR506-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SR506-T 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 SR506-T?
For technical support, including SR506-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SR506-T requirements.
6.How does Aetrix verify that SR506-T is sourced from the original manufacturer or authorized distributors?
All SR506-T 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 SR506-T meets industry standards.
7.What is the process for return or replacement of SR506-T?
All SR506-T units undergo pre-shipment inspection (PSI). If there is an issue with SR506-T, 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 SR506-T part is unused and in its original packaging.
Return procedure for SR506-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SR506-T Tags
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