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Diodes Incorporated PR1501-T
- Part No.:
- PR1501-T
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
PR1501-T.pdf
- Description:
- DIODE GEN PURP 50V 1.5A DO15
- Quantity:
- Payment:
- Shipping:
Inventory:7,530
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Product details
Overview
PR1501-T from Diodes Incorporated is a 1.5A fast recovery rectifier diode in DO-15 package, rated for 50V peak repetitive reverse voltage (VRRM), 1.2V forward voltage at 1.5A (VFM), and 150ns reverse recovery time (trr), used in AC/DC input stage rectification for low-power offline power supplies and auxiliary power rails.
For engineers reviewing the PR1501-T datasheet, PR1501-T pinout, PR1501-T application, or PR1501-T equivalent, key selection criteria include VRRM derating margin for surge transients, thermal resistance (RJA = 35 K/W) under PCB trace constraints, trr impact on switching loss in quasi-resonant flyback designs, and DO-15 mechanical compatibility with automated tape-and-reel placement.
Technical Context
This device employs a diffused junction structure optimized for fast switching and low conduction loss. It supports single-phase half-wave rectification at 60Hz with resistive or inductive loads, and requires 20% current derating for capacitive loads per datasheet specification.
Reverse recovery is characterized with IF = 0.5A, IR = 1.0A, and Irr = 0.25A (JEDEC test condition). Junction capacitance is 20pF at 4.0V reverse bias and 1.0MHz, confirming suitability for moderate-frequency (<100kHz) rectifier applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 50 V - Maximum non-repetitive reverse voltage before breakdown; sets minimum insulation margin for 24–48V AC input stages. |
| IO @ TA=50°C | 1.5 A - Continuous average forward current with leads held at ambient at 9.5mm from case; defines thermal design baseline. |
| VFM @ IF=1.5A | 1.2 V - Forward voltage drop determining conduction loss (1.8W max at full load); impacts efficiency in low-voltage output rails. |
| trr | 150 ns - Reverse recovery time affecting switching loss and EMI in higher-frequency converters; measured per JEDEC method. |
| RJA | 35 K/W - Junction-to-ambient thermal resistance; dictates minimum copper area and via count for 1.5A continuous operation. |
| IFSM | 50 A - Non-repetitive surge rating for 8.3ms half-sine; validates robustness against line surges and inrush events. |
Pinout & Package
DO-15 axial-leaded plastic package with cathode band marking. Leads are bright tin-plated, solderable per MIL-STD-202 Method 208, UL 94V-0 rated, moisture sensitivity Level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to AC input or transformer secondary; must withstand peak inverse voltage during off-state. |
| Cathode | Forward current exit point | Marked by band; ties to bulk capacitor positive or downstream regulator input; carries full rectified current. |
Key Features
| Feature | Design Value |
|---|---|
| Fast recovery (trr = 150 ns) | Reduces switching loss and EMI generation compared to standard rectifiers in 50–100kHz SMPS front-ends. |
| Low VFM (1.2 V @ 1.5A) | Limits conduction loss to ≤1.8W, easing thermal management on compact 2-layer PCBs without heatsinks. |
| 50A IFSM surge rating | Withstands cold-start inrush and lightning-induced line surges without degradation in industrial control power modules. |
| DO-15 tape-and-reel (4K/reel) | Enables high-yield SMT-compatible placement using standard pick-and-place equipment with axial orientation feeders. |
Applications
| AC/DC Wall Adapter Input Stage | Industrial PLC Auxiliary Power Supply |
|---|---|
Use Scenario: Rectifying 12–24V AC from wall transformer into DC for 5V/3.3V LDO regulation in consumer adapters. IC Role / Device Role / Timing Role: Primary-side unidirectional current switch converting AC to pulsating DC; no timing function. Use Value: 150ns trr minimizes ringing and EMI during zero-crossing transitions, easing EMC filter design. | Use Scenario: Providing isolated +12V bias rail for digital I/O isolation ICs and relay drivers in programmable logic controllers. IC Role / Device Role / Timing Role: High-reliability mains-fed rectifier operating continuously at 50°C ambient with 20% safety margin. Use Value: 35 K/W RJA enables stable operation on 1 oz. copper with 200 mm² pad area-no forced air required. |
| USB-C PD Adapter Standby Rail | Smart Home Sensor Node Power |
Use Scenario: Generating always-on 3.3V standby supply from auxiliary winding in multi-output USB-C PD flyback converters. IC Role / Device Role / Timing Role: Secondary-side rectifier handling light-load, high-efficiency duty cycle with minimal leakage. Use Value: 5.0 µA IRM at 25°C ensures <10 µW standby loss-critical for Energy Star Level VI compliance. | Use Scenario: Converting 9V AC from doorbell transformer to regulated 3.3V for BLE/Wi-Fi sensor nodes with battery backup. IC Role / Device Role / Timing Role: Low-cost, RoHS-compliant rectifier supporting intermittent operation with wide temperature range (-40°C to +85°C). Use Value: -65°C to +150°C Tj range ensures reliability across outdoor mounting environments without derating. |
Availability
PR1501-T is available at Aetrix Electronics and suitable for AC/DC input rectification, industrial auxiliary power supplies, and smart home sensor node power conversion requiring stable component supply and long-term manufacturability.
Supply support for PR1501-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, specializing in high-efficiency power management and signal integrity solutions for industrial, computing, and consumer markets.
The PR1501-T belongs to the PR150x/S fast recovery rectifier family, designed specifically for cost-sensitive, thermally constrained AC/DC front-end applications where low VFM and controlled trr improve system-level efficiency and EMI performance.
FAQ
What is the cathode marking convention for PR1501-T?
The cathode is marked by a distinct color band near one lead end. This band identifies the terminal that connects to the positive side of the output capacitor in standard half-wave rectifier configurations. Polarity must be observed during PCB layout and assembly to prevent reverse-bias failure.
Can PR1501-T replace PR1501-S in DO-41 package?
No - PR1501-T uses DO-15 package (larger body, longer leads, 0.4g weight), while PR1501-S uses DO-41 (smaller, 0.3g). Mechanical fit, thermal dissipation (RJA differs slightly due to package geometry), and tape-and-reel specifications (4K vs 5K/reel) are not interchangeable without board redesign and requalification.
Is PR1501-T suitable for use in automotive applications?
PR1501-T is not AEC-Q101 qualified and lacks automotive-grade screening or extended temperature validation beyond its -65°C to +150°C rating. It is intended for industrial and commercial power supplies only; automotive use requires explicit qualification and stress testing per OEM requirements.
Does PR1501-T require derating when used with capacitive loads?
Yes - the datasheet mandates 20% average current derating (to 1.2A) when rectifying capacitive-input filters, due to increased peak current stress and reduced conduction angle. This ensures safe operation within SOA limits and prevents premature thermal runaway under high ripple conditions.
PR1501-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- DO-204AC, DO-15, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-15
- Operating Temperature - Junction:
- -65°C ~ 150°C
PR1501-T FAQ
1.How can I place an order for PR1501-T through Aetrix?
Please submit a Request for Quotation (RFQ) for PR1501-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 PR1501-T reliable?
The price and inventory of PR1501-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PR1501-T is usually 5 days.
3.What payment methods are accepted for PR1501-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PR1501-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PR1501-T?
PR1501-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PR1501-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 PR1501-T?
For technical support, including PR1501-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PR1501-T requirements.
6.How does Aetrix verify that PR1501-T is sourced from the original manufacturer or authorized distributors?
All PR1501-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 PR1501-T meets industry standards.
7.What is the process for return or replacement of PR1501-T?
All PR1501-T units undergo pre-shipment inspection (PSI). If there is an issue with PR1501-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 PR1501-T part is unused and in its original packaging.
Return procedure for PR1501-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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