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Diodes Incorporated PR1504S-A
- Part No.:
- PR1504S-A
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
PR1504S-A.pdf
- Description:
- DIODE GEN PURP 400V 1.5A DO41
- Quantity:
- Payment:
- Shipping:
Inventory:3,058
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Product details
Overview
PR1504S-A from Diodes Incorporated is a 1.5A fast recovery rectifier diode in DO-41 package, rated for 400V peak repetitive reverse voltage (VRRM), 1.2V forward voltage at 1.5A, and 150ns reverse recovery time - used in AC/DC input stage rectification for offline power supplies and auxiliary power rails.
For engineers reviewing the PR1504S-A datasheet, PR1504S-A pinout, PR1504S-A application, or PR1504S-A equivalent, key selection criteria include VRRM derating margin, trr-dependent switching loss in flyback/foward converters, thermal resistance (RθJA = 35 K/W), and DO-41 lead-form compatibility with through-hole PCB layouts.
Technical Context
This device employs a diffused junction structure optimized for fast switching and low conduction loss. Its 150ns reverse recovery time (trr) and 20pF junction capacitance (Cj) support operation up to ~100kHz in discontinuous conduction mode (DCM) SMPS topologies.
Rated for 1.5A average rectified current at TA = 50°C with 9.5mm lead length maintained at ambient, it delivers stable performance under single-phase half-wave 60Hz resistive/inductive loads - with 20% current derating required for capacitive loads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 400 V - Maximum non-repetitive reverse voltage before breakdown; sets minimum insulation margin for 230VAC input designs. |
| IO @ TA=50°C | 1.5 A - Continuous DC output current capability when leads are held at ambient temperature at 9.5mm from case. |
| VFM @ IF=1.5A | 1.2 V - Forward conduction loss directly impacts efficiency and thermal rise in high-current rectifier paths. |
| trr | 150 ns - Determines reverse recovery charge (Qrr) and associated switching losses in hard-switched topologies. |
| RθJA | 35 K/W - Junction-to-ambient thermal resistance defines maximum allowable power dissipation without heatsinking. |
| IFSM | 50 A - Peak surge rating for 8.3ms half-sine wave; supports inrush current handling during cold start. |
Pinout & Package
DO-41 axial-leaded plastic package with cathode band marking. Standard lead spacing and form factor compatible with manual soldering and wave solder processes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Positive input terminal | Connected to AC source or transformer secondary; carries full forward current during conduction phase. |
| Cathode | Negative output terminal | Marked by band; connects to bulk capacitor or downstream converter input; blocks reverse voltage during off-state. |
Key Features
| Feature | Design Value |
|---|---|
| Fast recovery time | 150 ns trr enables efficient operation in 50–100 kHz SMPS without excessive switching loss. |
| Low forward voltage | 1.2 V at 1.5A reduces conduction loss and thermal stress in high-duty-cycle applications. |
| High surge rating | 50A IFSM withstands line transients and startup inrush in unregulated AC/DC front-ends. |
| RoHS-compliant finish | Bright tin-plated leads meet MIL-STD-202 solderability requirements and EU Directive Annex exemptions. |
Applications
| Offline AC/DC Adapters | Industrial Control Power Supplies |
|---|---|
Use Scenario: 230VAC-to-12VDC adapter for IoT gateways with passive PFC and flyback topology. IC Role / Device Role / Timing Role: Primary-side rectifier converting transformer secondary AC to pulsating DC before bulk capacitor. Use Value: 400V VRRM provides 2× safety margin over 230VAC peak (325V), while 150ns trr minimizes dead-time loss in quasi-resonant operation. | Use Scenario: Auxiliary 5V/1.2A bias supply in PLC CPU module powered from 24VDC bus with AC-coupled input. IC Role / Device Role / Timing Role: Input-stage rectifier for isolated DC/DC converter feeding microcontroller and I/O drivers. Use Value: 1.5A IO rating supports continuous load with 20% margin; DO-41 package allows direct replacement of legacy rectifiers in existing footprints. |
| LED Driver Secondary Rectification | Appliance Motor Control Power Rails |
Use Scenario: Output rectification in constant-current LED driver for commercial downlights (120VAC input, 36V/0.7A output). IC Role / Device Role / Timing Role: Secondary-side fast recovery diode in flyback converter delivering regulated DC to LED string. Use Value: Low Cj (20pF) and fast trr reduce ringing and EMI during turn-off, easing EMC filter design. | Use Scenario: DC bus rectification for H-bridge gate driver ICs in washing machine motor control boards. IC Role / Device Role / Timing Role: Half-wave rectifier supplying 15V bias rail to isolated gate drivers and current sense amplifiers. Use Value: 50A IFSM handles motor stall surges; RθJA = 35 K/W permits operation at 70°C ambient without forced airflow. |
Availability
PR1504S-A is available at Aetrix Electronics and suitable for offline AC/DC adapters, industrial control power supplies, and LED driver secondary rectification requiring stable component supply and long-term manufacturing continuity.
Supply support for PR1504S-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-efficiency power management, signal integrity, and protection solutions.
The PR150x/S series targets cost-sensitive, high-volume power conversion applications where fast recovery, robust surge tolerance, and standardized through-hole packaging are essential.
FAQ
What is the maximum operating temperature for PR1504S-A?
The PR1504S-A has an operating junction temperature range of –65°C to +150°C. Its thermal resistance is 35 K/W, so at 1.5A and 1.2V forward drop (1.8W dissipation), junction temperature rises ~63°C above ambient - limiting safe operation to ≤87°C ambient in still air without heatsinking.
Is PR1504S-A RoHS compliant?
Yes, PR1504S-A features lead-free bright tin-plated leads and complies with RoHS Directive 2011/65/EU, including exemptions for glass and high-temperature solder per Annexes 5 and 7 of EU Directive 2015/863.
Can PR1504S-A replace PR1504-B in a DO-15 footprint?
No - PR1504S-A uses DO-41 package (smaller body, tighter lead spacing), while PR1504-B uses DO-15. Mechanical dimensions differ significantly: DO-41 max width is 5.21mm vs. DO-15's 7.62mm, and lead spacing is incompatible without PCB redesign.
Why is PR1504S-A marked "NOT RECOMMENDED FOR NEW DESIGN"?
This designation reflects Diodes Incorporated's internal roadmap guidance: newer devices like the B150-13-F offer lower VFM (0.95V), faster trr (50ns), and improved thermal performance. PR1504S-A remains fully qualified and supported but is not promoted for new product introductions.
PR1504S-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):
- 400 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 @ 400 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
PR1504S-A FAQ
1.How can I place an order for PR1504S-A through Aetrix?
Please submit a Request for Quotation (RFQ) for PR1504S-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 PR1504S-A reliable?
The price and inventory of PR1504S-A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PR1504S-A is usually 5 days.
3.What payment methods are accepted for PR1504S-A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PR1504S-A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PR1504S-A?
PR1504S-A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PR1504S-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 PR1504S-A?
For technical support, including PR1504S-A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PR1504S-A requirements.
6.How does Aetrix verify that PR1504S-A is sourced from the original manufacturer or authorized distributors?
All PR1504S-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 PR1504S-A meets industry standards.
7.What is the process for return or replacement of PR1504S-A?
All PR1504S-A units undergo pre-shipment inspection (PSI). If there is an issue with PR1504S-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 PR1504S-A part is unused and in its original packaging.
Return procedure for PR1504S-A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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