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Taiwan Semiconductor Corporation SR504 B0G
- Part No.:
- SR504 B0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
SR504 B0G.pdf
- Description:
- DIODE SCHOTTKY 40V 5A DO201AD
- Quantity:
- Payment:
- Shipping:
Inventory:9,234
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Product details
Overview
SR504 B0G from Taiwan Semiconductor is a 5A, 40V Schottky barrier rectifier in DO-201AD package, featuring low forward voltage (0.55 V at 5 A, 25°C), high surge current capability (120 A), and AEC-Q101 qualification option. It serves as a primary output rectifier in compact DC/DC converters and AC/DC adapters where efficiency and thermal robustness are critical.
For engineers reviewing the SR504 B0G datasheet, SR504 B0G pinout, SR504 B0G application, or SR504 B0G equivalent, key selection factors include its 40 V repetitive peak reverse voltage, 125°C maximum junction temperature, 35°C/W junction-to-ambient thermal resistance, and cathode-band polarity marking - all essential for thermal design, reliability validation, and automotive-grade layout compliance.
Technical Context
This Schottky rectifier uses a single-die construction with guard ring structure to enhance overvoltage ruggedness and suppress avalanche failure. Its low VF enables reduced conduction loss in high-frequency switching topologies, while the DO-201AD package supports through-hole mounting with 1.10 g mass and UL 94V-0 molding compound.
The device operates across –55°C to +125°C junction range (derated to 150°C for selected variants), exhibits 10,000 V/µs critical dv/dt rating, and delivers 500 µA max reverse leakage at 25°C and rated VR - enabling stable performance in noisy SMPS environments without external snubbing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 40 V - Maximum repetitive reverse blocking voltage; defines safe operating limit in flyback or buck output stages |
| IF | 5 A continuous - Rated average forward current; sets minimum trace width and heatsinking requirements |
| VF @ 5A, 25°C | 0.55 V max - Low conduction loss directly improves system efficiency and reduces thermal stress |
| IFSM (8.3 ms) | 120 A - Withstands startup surges and transient overloads without degradation |
| TJ max | 125°C - Specifies maximum allowable junction temperature under steady-state operation |
| RθJA | 35°C/W - Enables thermal estimation for PCB copper area and ambient conditions |
| IR @ 40 V, 25°C | 500 µA max - Low leakage preserves regulation accuracy in high-impedance feedback paths |
Pinout & Package
DO-201AD package: axial-leaded, epoxy-molded case with cathode band marking; lead finish is pure tin per J-STD-002; meets JESD201 Class 2 whisker resistance and UL 94V-0 flammability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Input current entry point | Connected to switch node or transformer secondary; requires adequate creepage clearance |
| Cathode (banded end) | Output current exit point | Connected to output capacitor and load; polarity must match PCB silkscreen and schematic symbol |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring structure | Improves voltage standoff margin and prevents edge breakdown during transient overvoltage events |
| AEC-Q101 qualified variant available | Validated for automotive power supply modules requiring stress-tested reliability and PPAP documentation |
| Low VF and high IFSM synergy | Enables smaller heatsinks and higher power density in space-constrained adapters and industrial PSUs |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and global environmental regulations for commercial and automotive production |
Applications
| Switching Mode Power Supply (SMPS) | AC/DC Adapters |
|---|---|
Use Scenario: Secondary-side rectification in 30–60 W offline flyback converters. IC Role / Device Role / Timing Role: Unidirectional current steering element converting high-frequency AC from transformer to regulated DC output. Use Value: 0.55 V VF minimizes conduction loss, directly improving full-load efficiency by ~1.2% versus higher-VF alternatives at 5 A. | Use Scenario: Output rectification in universal-input wall adapters for consumer electronics. IC Role / Device Role / Timing Role: High-reliability discrete rectifier replacing diode bridges in compact, thermally constrained enclosures. Use Value: 120 A IFSM withstands repeated plug-in surges; DO-201AD mechanical robustness ensures long-term solder joint integrity. |
| DC/DC Converters | Automotive Body Control Modules |
Use Scenario: Synchronous rectifier replacement in isolated 12 V → 5 V/3.3 V buck-derived converters. IC Role / Device Role / Timing Role: Passive rectification stage delivering clean, low-noise output with minimal EMI generation. Use Value: 10,000 V/µs dv/dt rating prevents false turn-on in fast-switching topologies, eliminating need for gate drive isolation. | Use Scenario: 12 V input conditioning and auxiliary rail rectification in BCMs with extended temperature requirements. IC Role / Device Role / Timing Role: AEC-Q101-capable discrete rectifier supporting 125°C ambient operation in engine bay proximity. Use Value: Validated thermal performance (RθJA = 35°C/W) and –55°C to +125°C TJ range ensure functional safety compliance per ISO 26262 ASIL-B support layers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay VS-50WQ04FN-M3/45 | Same 40 V VRRM, 5 A IF, but TO-220AC package; VF = 0.52 V typ at 5 A; RθJA ≈ 40°C/W | Requires heatsink mounting; unsuitable for compact through-hole designs | Select when higher surge margin or heatsink-assisted thermal management is available |
| ON Semiconductor SB540-E3/54 | 40 V VRRM, 5 A IF, DO-201AD package; VF = 0.54 V max at 5 A; IR = 500 µA max at 25°C; no AEC-Q101 option | Lacks automotive qualification; identical footprint and electrical envelope | Choose for cost-sensitive industrial applications where AEC-Q101 is not mandated |
Compared with VS-50WQ04FN-M3/45 and SB540-E3/54, SR504 B0G uniquely combines DO-201AD form factor, AEC-Q101 availability, and 35°C/W RθJA - making it optimal for automotive-qualified, space-limited, thermally demanding rectification tasks without heatsink dependency.
Availability
SR504 B0G is available at Aetrix Electronics and suitable for switching mode power supplies, AC/DC adapters, and automotive body control modules requiring stable component supply, consistent parametric performance, and long-term manufacturing continuity.
Supply support for SR504 B0G 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in power rectifiers, TVS diodes, and MOSFETs for industrial and automotive markets.
The SR502–SR520 family was designed specifically for high-efficiency, high-reliability output rectification in compact power converters - balancing low VF, rugged surge handling, and automotive-grade process validation.
FAQ
What is the maximum junction temperature rating for SR504 B0G?
The SR504 B0G has a maximum junction temperature (TJ) of +125°C under standard operating conditions. This rating is confirmed in the Absolute Maximum Ratings table and applies to the base SR504 variant; higher-temperature versions (e.g., SR504H) may support up to +150°C but require explicit AEC-Q101 qualification code. Thermal design must respect this limit using the provided RθJA = 35°C/W value.
Does SR504 B0G have AEC-Q101 qualification?
The SR504 B0G itself is not AEC-Q101 qualified - only variants marked with "H" suffix (e.g., SR504H or SR504HA0G) carry that qualification. The "B0G" suffix denotes green compound and ammo box packaging (500 units), not automotive stress testing. For automotive applications, specify SR504HA0G or confirm qualification status via Taiwan Semiconductor's official product change notices.
What does the "B0G" suffix mean in SR504 B0G?
The "B0G" suffix in SR504 B0G indicates halogen-free green molding compound ("G") and ammo box packaging ("B0" = 500 units per box). It does not denote voltage grade (that is fixed by "504"), qualification level, or thermal rating. This packaging format supports manual assembly and small-batch prototyping while maintaining full compliance with RoHS and IEC 61249-2-21.
How does SR504 B0G compare to SR505 B0G in terms of forward voltage?
SR504 B0G specifies a maximum forward voltage (VF) of 0.55 V at 5 A and 25°C, whereas SR505 B0G (50 V VRRM) has a higher VF of 0.70 V under identical conditions. This 0.15 V difference reflects the trade-off between reverse voltage rating and series resistance in Schottky die design - selecting SR504 B0G yields lower conduction loss where 40 V blocking suffices.
Is SR504 B0G compatible with lead-free reflow soldering processes?
Yes, SR504 B0G features pure tin-plated leads compliant with J-STD-002 for solderability, and its DO-201AD package withstands standard lead-free reflow profiles (peak 260°C, 10 s max). The UL 94V-0 epoxy compound remains stable under these conditions, and the device passes JESD201 Class 2 whisker testing - ensuring reliable interconnect integrity post-assembly.
SR504 B0G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-201AD, Axial
- Packaging:
- Bulk
- Product Status:
- Discontinued at Digi-Key
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 40 V
- Current - Average Rectified (Io):
- 5A
- Voltage - Forward (Vf) (Max) @ If:
- 550 mV @ 5 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 500 µA @ 40 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-201AD
- Operating Temperature - Junction:
- -55°C ~ 125°C
SR504 B0G FAQ
1.How can I place an order for SR504 B0G through Aetrix?
Please submit a Request for Quotation (RFQ) for SR504 B0G 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 SR504 B0G reliable?
The price and inventory of SR504 B0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SR504 B0G is usually 5 days.
3.What payment methods are accepted for SR504 B0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SR504 B0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SR504 B0G?
SR504 B0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SR504 B0G 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 SR504 B0G?
For technical support, including SR504 B0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SR504 B0G requirements.
6.How does Aetrix verify that SR504 B0G is sourced from the original manufacturer or authorized distributors?
All SR504 B0G 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 SR504 B0G meets industry standards.
7.What is the process for return or replacement of SR504 B0G?
All SR504 B0G units undergo pre-shipment inspection (PSI). If there is an issue with SR504 B0G, 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 SR504 B0G part is unused and in its original packaging.
Return procedure for SR504 B0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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