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Diodes Incorporated PR1501S-A
- Part No.:
- PR1501S-A
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
PR1501S-A.pdf
- Description:
- DIODE GEN PURP 50V 1.5A DO41
- Quantity:
- Payment:
- Shipping:
Inventory:3,854
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Product details
Overview
PR1501S-A from Diodes Incorporated is a 1.5A fast recovery rectifier diode in DO-41 package, designed for single-phase AC/DC conversion in power supplies and adapters. It features 50V peak repetitive reverse voltage (VRRM), 1.2V forward voltage at 1.5A (VFM), and 150ns reverse recovery time (trr), enabling high-efficiency operation in compact offline power stages.
For engineers reviewing the PR1501S-A datasheet, PR1501S-A pinout, PR1501S-A application, or PR1501S-A equivalent, key selection criteria include its fast trr for reduced switching loss, low VFM for thermal management in convection-cooled designs, DO-41 leaded package compatibility with through-hole assembly, and 50A non-repetitive surge rating for input rectification transient robustness.
Technical Context
This device is a diffused-junction, planar silicon fast recovery rectifier optimized for high-frequency switching applications up to 100 kHz. Its 150ns trr and 20pF junction capacitance support efficient operation in flyback and forward converter secondary-side rectification where reverse recovery losses must be minimized.
The diode operates across –65°C to +150°C junction temperature range and exhibits 5.0µA peak reverse current at 25°C and rated blocking voltage. Thermal resistance from junction to ambient is 35K/W under standard JEDEC test conditions (leads held at ambient 9.5mm from case).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 50 V - Maximum peak reverse voltage the diode blocks reliably without breakdown in repetitive AC line applications. |
| IO @ TA=50°C | 1.5 A - Continuous average forward current capability when ambient temperature is maintained at 50°C with leads cooled per JEDEC condition. |
| VFM @ IF=1.5A | 1.2 V - Forward voltage drop determining conduction loss and self-heating in 1.5A DC output paths. |
| trr | 150 ns - Reverse recovery time defining turn-off speed and associated switching loss in high-frequency rectifiers. |
| IFSM | 50 A - Non-repetitive surge current rating for handling 8.3ms half-sine line transients without failure. |
| RJA | 35 K/W - Junction-to-ambient thermal resistance used to calculate junction temperature rise under steady-state conduction. |
| IRM @ 25°C | 5.0 µA - Peak reverse leakage current at rated DC blocking voltage, critical for low-power standby circuits. |
Pinout & Package
DO-41 axial-leaded plastic package with cathode band marking. Standard through-hole mounting; anode and cathode terminals identified by band location (cathode) and lead polarity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input terminal for forward current flow | Connected to AC source or transformer secondary during positive half-cycle; determines forward bias direction. |
| Cathode | Output terminal for forward current flow | Marked with band; connects to output capacitor or load; defines polarity of rectified DC output. |
Key Features
| Feature | Design Value |
|---|---|
| Fast recovery time | 150 ns trr enables use in 50–100 kHz SMPS without excessive switching loss or ringing. |
| Low forward voltage | 1.2 V at 1.5A reduces conduction loss and improves efficiency in low-voltage, high-current outputs. |
| High surge rating | 50A IFSM withstands cold-start inrush and lightning-induced line surges in AC-input front ends. |
| RoHS-compliant finish | Bright tin-plated leads meet J-STD-020C solderability standards and EU Directive 2011/65/EU. |
Applications
| AC-DC Adapter Input Rectification | Industrial Control Power Supply |
|---|---|
Use Scenario: 50/60Hz AC input rectification in wall-wart adapters delivering ≤15W output. IC Role / Device Role / Timing Role: Primary-side unidirectional current switch converting AC to pulsating DC before bulk capacitance. Use Value: 1.5A IO rating and 50V VRRM match typical 120VAC RMS input with safety margin; DO-41 package fits tight PCB layouts. | Use Scenario: Auxiliary power supply in PLC modules requiring reliable 5V/12V rail generation from 24VAC control lines. IC Role / Device Role / Timing Role: Half-wave rectifier feeding linear regulator or buck controller input. Use Value: 150ns trr minimizes reverse recovery loss at 50Hz while maintaining low VFM for stable regulation under variable load. |
| LED Driver Bulk Rectification | Appliance Main Power Stage |
Use Scenario: Off-line LED driver input stage powering constant-current ICs in residential lighting fixtures. IC Role / Device Role / Timing Role: Bridge or single-diode rectifier in capacitive-input filter configuration. Use Value: 50A IFSM handles capacitor charging surges; 35K/W RJA allows operation without heatsink in thermally constrained enclosures. | Use Scenario: Main rectifier in white goods (e.g., washing machine control board) with 230VAC input and 12V logic supply. IC Role / Device Role / Timing Role: Single-phase half-wave rectifier feeding unregulated DC bus for relay drivers and microcontroller LDOs. Use Value: –65°C to +150°C operating range ensures reliability across ambient extremes; RoHS-compliant plating supports automated assembly. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fast recovery rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4933 | VRRM = 100V, trr = 200ns, VFM = 1.2V @ 1A | Higher blocking voltage but slower recovery; suited for 230VAC inputs with lower switching frequency. | Select when higher VRRM margin is required and trr <150ns is not critical. |
| FR101 | VRRM = 50V, trr = 150ns, VFM = 1.3V @ 1A, IO = 1.0A | Same VRRM and trr, but lower current rating and higher VFM; smaller die size limits thermal performance. | Acceptable only in derated 1.0A applications with ample heatsinking or airflow. |
Compared with 1N4933 and FR101, PR1501S-A delivers optimal balance of 50V blocking, 1.5A current, and 150ns recovery for cost-sensitive 120VAC input stages-offering higher IO than FR101 and faster switching than 1N4933 without sacrificing surge robustness.
Availability
PR1501S-A is available at Aetrix Electronics and suitable for AC-DC adapters, industrial control power supplies, LED driver bulk rectification, and appliance main power stages requiring stable component supply and long-term manufacturability.
Supply support for PR1501S-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, specializing in high-performance, high-reliability components for power management, signal integrity, and protection.
The PR1501S-A belongs to the PR150x/S fast recovery rectifier product line, engineered for cost-effective, high-efficiency AC/DC conversion in consumer, industrial, and lighting applications with emphasis on thermal robustness and surge resilience.
FAQ
Is PR1501S-A suitable for surface-mount assembly?
No. PR1501S-A uses a DO-41 axial-leaded package designed exclusively for through-hole mounting. It lacks SMD-compatible terminations or footprint geometry. For surface-mount alternatives, consider Diodes Incorporated's AP1501W (SOD-123) or SB150 (SMA), which offer comparable electrical specs in SMT packages.
What is the maximum allowable ambient temperature for full 1.5A operation?
Full 1.5A average forward current is rated at TA = 50°C, provided leads are maintained at ambient temperature at a distance of 9.5 mm from the case per JEDEC test condition. At higher ambient temperatures, current must be derated per Figure 1 - e.g., ~1.1A at 75°C, ~0.6A at 100°C.
Does PR1501S-A have a specified junction-to-case thermal resistance (RJC)?
No. The datasheet specifies only junction-to-ambient thermal resistance (RJA = 35 K/W) under standardized JEDEC conditions. RJC is not published; thermal design must rely on RJA and board-level copper area, airflow, and enclosure constraints to estimate junction temperature.
Why is PR1501S-A marked "NOT RECOMMENDED FOR NEW DESIGN"?
This designation reflects Diodes Incorporated's internal roadmap guidance: newer devices like the FRED Pt series (e.g., DS1501S) offer improved trr (<100ns), lower VFM, and enhanced surge robustness. PR1501S-A remains fully qualified and supported for legacy production and repair, but new designs should evaluate next-generation alternatives.
PR1501S-A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- DO-204AL, DO-41, Axial
- Packaging:
- Tape & Box (TB)
- Product Status:
- Obsolete
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 50 V
- Current - Average Rectified (Io):
- 1.5A
- Voltage - Forward (Vf) (Max) @ If:
- 1.2 V @ 1.5 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 150 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 50 V
- Capacitance @ Vr, F:
- 20pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-41
- Operating Temperature - Junction:
- -65°C ~ 150°C
PR1501S-A FAQ
1.How can I place an order for PR1501S-A through Aetrix?
Please submit a Request for Quotation (RFQ) for PR1501S-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 PR1501S-A reliable?
The price and inventory of PR1501S-A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PR1501S-A is usually 5 days.
3.What payment methods are accepted for PR1501S-A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PR1501S-A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PR1501S-A?
PR1501S-A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PR1501S-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 PR1501S-A?
For technical support, including PR1501S-A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PR1501S-A requirements.
6.How does Aetrix verify that PR1501S-A is sourced from the original manufacturer or authorized distributors?
All PR1501S-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 PR1501S-A meets industry standards.
7.What is the process for return or replacement of PR1501S-A?
All PR1501S-A units undergo pre-shipment inspection (PSI). If there is an issue with PR1501S-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 PR1501S-A part is unused and in its original packaging.
Return procedure for PR1501S-A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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