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Diodes Incorporated SB530-A
- Part No.:
- SB530-A
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
SB530-A.pdf
- Description:
- DIODE SCHOTTKY 30V 5A DO201AD
- Quantity:
- Payment:
- Shipping:
Inventory:5,478
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Product details
Overview
SB530-A from Diodes Incorporated is a 30 V, 5.0 A Schottky barrier rectifier in DO-201AD package, featuring low forward voltage drop (0.55 V @ 5.0 A), 150 A non-repetitive surge capability, and RoHS-compliant tin-plated leads - used for polarity protection and free-wheeling in DC-DC converters and automotive auxiliary power supplies.
For engineers reviewing the SB530-A datasheet, SB530-A pinout, SB530-A application, or SB530-A equivalent, key selection criteria include forward voltage at rated current, thermal resistance junction-to-lead (8 °C/W), peak reverse voltage margin, and DO-201AD mechanical compatibility with high-current PCB layouts.
Technical Context
This Schottky rectifier uses epitaxial construction with guard ring die design to suppress transient-induced failure and improve ruggedness under repetitive surge stress. Its low VF enables reduced conduction loss in 12 V–24 V input switching power supplies operating up to 150 kHz.
The device is optimized for single-phase, half-wave rectification with resistive or inductive loads at 60 Hz; capacitive loads require 20% current derating. Thermal performance relies on vertical lead mounting with 9.5 mm lead length for effective junction-to-ambient heat transfer.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 30 V - Maximum repetitive reverse voltage before breakdown; sets safe operating limit in 24 V system reverse-polarity protection. |
| IO | 5.0 A - Average rectified output current at TA = 25 °C with specified mounting; defines continuous DC power handling capacity. |
| VFM | 0.55 V @ 5.0 A - Forward voltage drop at full rated current; directly determines conduction loss (2.75 W) and thermal load. |
| IFSM | 150 A - Non-repetitive peak forward surge current (8.3 ms half-sine); supports motor-start and capacitor-charging transients. |
| RJL | 8 °C/W - Junction-to-lead thermal resistance; enables accurate temperature rise estimation when soldered to PCB with 9.5 mm leads. |
| IRM | 0.5 mA @ 25 °C - Peak reverse leakage at rated blocking voltage; impacts standby power loss in always-on circuits. |
| Tj Range | −65 to +150 °C - Maximum junction operating temperature; allows use in under-hood automotive environments. |
Pinout & Package
Package: DO-201AD molded plastic case (UL 94V-0), 1.1 g weight, cathode band polarity marking, bright tin-plated leads solderable per MIL-STD-202 Method 208.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to lower-potential side (e.g., ground or return path) in reverse-polarity protection; must handle full 5 A continuous current. |
| Cathode | Current exit point during forward conduction; marked with band | Connected to input supply rail; carries full load current and must be routed with low-inductance, wide copper pour for thermal management. |
Key Features
| Feature | Design Value |
|---|---|
| Epitaxial guard ring die | Improves ESD and surge immunity by controlling electric field distribution at junction edge - critical for automotive load-dump survivability. |
| Low VF (0.55 V @ 5 A) | Reduces power dissipation by ~30% vs. comparable 30 V silicon rectifiers, lowering heatsink requirements in space-constrained adapters. |
| 150 A IFSM rating | Withstands inrush currents from large bulk capacitors without degradation - validated per JEDEC 8.3 ms half-sine test method. |
| DO-201AD mechanical robustness | Supports automated insertion and wave soldering; 9.5 mm lead length ensures stable thermal path to PCB copper for RθJL = 8 °C/W. |
| RoHS-compliant finish | Bright tin plating meets EU Directive Annex Notes 5 & 7 exemptions; compatible with lead-free reflow and traditional SnPb assembly. |
Applications
| Automotive Auxiliary Power Supply | Industrial DC-DC Converter Output Stage |
|---|---|
Use Scenario: 12 V battery-fed power module supplying infotainment and telematics subsystems with reverse-polarity and load-dump protection. IC Role / Device Role / Timing Role: Polarity protection diode placed between battery input and DC-DC controller input; blocks reverse connection while conducting forward current. Use Value: 0.55 V VF minimizes voltage drop across protection path, preserving >11.4 V minimum input to downstream regulators during cold-crank conditions. | Use Scenario: Secondary-side synchronous rectification replacement in isolated 48 V to 12 V flyback converter for factory automation I/O modules. IC Role / Device Role / Timing Role: Free-wheeling diode across transformer secondary winding; clamps inductive kick and recirculates energy during MOSFET off-time. Use Value: 150 A IFSM handles peak current surges during short-circuit recovery, preventing thermal runaway during fault-clearing cycles. |
| Solar Charge Controller Input Protection | LED Driver Input Rectification |
Use Scenario: PV panel input stage of MPPT charge controller exposed to outdoor temperature extremes and lightning-induced transients. IC Role / Device Role / Timing Role: Input rectifier and overvoltage clamp; conducts charging current while blocking reverse panel leakage at night. Use Value: −65 to +150 °C Tj range ensures reliable operation at desert ambient temperatures; guard ring die suppresses transient-induced junction avalanche. | Use Scenario: AC-input LED driver for street lighting using bridge rectification followed by buck PFC stage. IC Role / Device Role / Timing Role: One leg of full-wave bridge rectifier converting 120/230 VAC to pulsating DC; operates at line frequency with high peak current duty cycle. Use Value: 5.0 A IO rating supports 40 W LED loads; low VF reduces conduction loss in thermally limited aluminum-core PCB designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SB530-T | Same electrical specs; tape-and-reel packaging (1.2K/reel), not ammo pack | Designed for SMT-compatible automated assembly; requires reel feeder and pick-and-place setup | Select for high-volume production where placement speed and traceability outweigh manual handling needs. |
| SS53 | 30 V, 5 A Schottky; DO-214AC (SMC) package; VF = 0.52 V @ 5 A; RθJA = 40 °C/W | Surface-mount alternative with lower profile but higher thermal resistance; no axial leads | Choose when board space is constrained and thermal management uses external heatsinking or forced air. |
Compared with SB530-A, SB530-T offers identical performance in automated manufacturing flow, while SS53 trades axial-mount simplicity and lower RθJL for SMT compatibility and slightly lower VF - requiring careful thermal layout due to higher RθJA.
Availability
SB530-A is available at Aetrix Electronics and suitable for automotive auxiliary power supplies, industrial DC-DC converters, solar charge controllers, and LED driver input rectification requiring stable component supply and long-term sourcing continuity.
Supply support for SB530-A 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 and manufacturing operations across Asia and the US.
The SB5xx series belongs to Diodes' high-current Schottky rectifier product line, engineered specifically for efficiency-critical 5–10 A power conversion stages in automotive, industrial, and renewable energy systems.
FAQ
What is the maximum allowable lead temperature during soldering for SB530-A?
The SB530-A leads are tin-plated and compliant with MIL-STD-202 Method 208. Maximum soldering temperature is 260 °C for 10 seconds max, with no more than two soldering cycles. Exceeding this risks delamination of the molded plastic case or degradation of the die attach.
Can SB530-A replace a standard PN-junction rectifier like 1N5408 in a 24 V power supply?
Yes - SB530-A can replace 1N5408 in forward-biased applications where its 30 V VRRM suffices and low VF is beneficial. However, it cannot block higher reverse voltages (1N5408 = 1000 V), and its reverse leakage (0.5 mA) is higher than silicon rectifiers, making it unsuitable for high-impedance hold-up circuits.
Is SB530-A suitable for use in a synchronous rectifier topology?
No - SB530-A is a passive Schottky diode, not a synchronous rectifier IC or MOSFET-based solution. It lacks gate drive interface, timing control, or adaptive turn-on/turn-off logic. It functions only as a unidirectional, self-commutated rectifier with fixed forward conduction threshold.
How does the DO-201AD package affect thermal performance compared to TO-220?
DO-201AD has no metal tab or heatsink interface; thermal path relies solely on leads and PCB copper. Its RθJL = 8 °C/W (lead) is favorable, but RθJA = 25 °C/W limits power dissipation without board-level copper area. TO-220 offers lower RθJA (~20 °C/W with small heatsink) but larger footprint and mounting complexity.
SB530-A 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):
- 30 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 @ 30 V
- Capacitance @ Vr, F:
- 500pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-201AD
- Operating Temperature - Junction:
- -50°C ~ 150°C
SB530-A FAQ
1.How can I place an order for SB530-A through Aetrix?
Please submit a Request for Quotation (RFQ) for SB530-A 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 SB530-A reliable?
The price and inventory of SB530-A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SB530-A is usually 5 days.
3.What payment methods are accepted for SB530-A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SB530-A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SB530-A?
SB530-A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SB530-A 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 SB530-A?
For technical support, including SB530-A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SB530-A requirements.
6.How does Aetrix verify that SB530-A is sourced from the original manufacturer or authorized distributors?
All SB530-A 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 SB530-A meets industry standards.
7.What is the process for return or replacement of SB530-A?
All SB530-A units undergo pre-shipment inspection (PSI). If there is an issue with SB530-A, 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 SB530-A part is unused and in its original packaging.
Return procedure for SB530-A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SB530-A Tags
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