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Diodes Incorporated PR1505S-A
- Part No.:
- PR1505S-A
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
PR1505S-A.pdf
- Description:
- DIODE GEN PURP 600V 1.5A DO41
- Quantity:
- Payment:
- Shipping:
Inventory:3,205
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Product details
Overview
PR1505S-A from Diodes Incorporated is a 1.5A fast recovery rectifier diode in DO-41 package, rated for 600V peak repetitive reverse voltage (VRRM), 1.2V forward voltage at 1.5A, and 150ns reverse recovery time - optimized for high-efficiency AC/DC front-end rectification in offline power supplies and industrial SMPS.
For engineers reviewing the PR1505S-A datasheet, PR1505S-A pinout, PR1505S-A application, or PR1505S-A equivalent, key selection criteria include VRRM derating margin, trr-dependent switching loss in 50–100kHz flyback designs, thermal resistance (RθJA = 35 K/W), and DO-41 lead-form compatibility with through-hole PCB layouts.
Technical Context
This device uses a diffused junction structure to achieve fast switching with low forward conduction loss and controlled reverse recovery behavior. Its 150ns trr (measured at IF = 0.5A, IR = 1.0A, Irr = 0.25A) enables reduced switching losses compared to standard recovery rectifiers in medium-frequency converters.
The DO-41 package provides mechanical robustness and thermal performance suitable for ambient temperatures up to +150°C, with a 50A non-repetitive surge rating (8.3ms half-sine) supporting inrush current handling in unregulated input stages.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 600 V - Maximum allowable repetitive reverse voltage before breakdown; sets minimum input stage insulation margin for 230VAC mains applications. |
| IO @ TA=50°C | 1.5 A - Continuous average forward current under specified thermal conditions; defines usable DC output capability in half-wave rectifier topologies. |
| VFM @ IF=1.5A | 1.2 V - Forward voltage drop at rated current; directly determines conduction loss (1.8W typical) and thermal load in linearly scaled designs. |
| trr | 150 ns - Reverse recovery time; critical for minimizing turn-off switching loss and EMI generation in 50–100kHz flyback and forward converters. |
| IFSM | 50 A - Peak non-repetitive surge current rating; supports cold-start inrush without failure in capacitor-input filter configurations. |
| RθJA | 35 K/W - Junction-to-ambient thermal resistance; used to calculate junction temperature rise (ΔTj = Pd × RθJA) for reliability validation. |
| IRM @ 100°C | 100 µA - Maximum reverse leakage at elevated temperature; impacts standby power and high-impedance bias network stability. |
Pinout & Package
DO-41 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 source or transformer secondary; polarity must match input phase in bridge configurations. |
| Cathode | Forward current exit / reverse blocking terminal | Marked by band; connects to output capacitor or load return; reverse voltage applied here during off-state. |
Key Features
| Feature | Design Value |
|---|---|
| Fast recovery (trr = 150 ns) | Reduces switching loss and EMI in 50–100 kHz SMPS, enabling higher efficiency than general-purpose rectifiers. |
| Low VFM (1.2 V @ 1.5 A) | Lowers conduction loss by ~15% vs. comparable 600V rectifiers with >1.4V drop, improving thermal headroom in compact layouts. |
| 50A IFSM surge rating | Withstands capacitor-charging inrush in offline supplies without degradation, eliminating need for series NTC in many cost-sensitive designs. |
| DO-41 RoHS-compliant packaging | Enables direct replacement in legacy through-hole production lines; UL 94V-0 housing meets flame-retardancy requirements for industrial enclosures. |
Applications
| AC/DC Adapter Front-End | Industrial SMPS Input Stage |
|---|---|
Use Scenario: Single-phase, half-wave rectification feeding bulk capacitor in universal-input (90–264VAC) wall adapters. IC Role / Device Role / Timing Role: Primary rectifier converting AC line to pulsating DC; operates at 50/60Hz with minimal conduction loss. Use Value: 1.2V VFM reduces heat generation in sealed enclosures; 600V VRRM ensures safety margin across global mains voltages. | Use Scenario: Input rectification in 20–50W industrial switch-mode power supplies with active PFC pre-regulators. IC Role / Device Role / Timing Role: Secondary rectifier in auxiliary or bias winding circuits requiring fast recovery to minimize ringing. Use Value: 150ns trr suppresses high-frequency oscillation during turn-off, reducing snubber component count and board space. |
| LED Driver Bulk Rectification | UPS Charger Input Stage |
Use Scenario: Off-line LED driver with passive PFC using choke-input or capacitor-input topology. IC Role / Device Role / Timing Role: Main AC-to-DC conversion element; handles continuous 1.5A average current with thermal stability. Use Value: 35 K/W RθJA allows operation at full load up to +70°C ambient without heatsinking in open-frame designs. | Use Scenario: Input rectification in line-interactive UPS battery charger modules operating on 120/230VAC inputs. IC Role / Device Role / Timing Role: High-reliability rectifier exposed to frequent surges and brownouts. Use Value: 50A IFSM rating withstands repeated 10-cycle surges per JEDEC, extending service life over standard 30A devices. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fast recovery rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1L06U | VRRM = 600V, trr = 120ns, VFM = 1.15V @ 1.5A, SOD-123FL package | Surface-mount only; requires reflow-compatible layout and lacks axial lead mechanical retention | Preferred for new SMT designs where board space and automated assembly outweigh through-hole serviceability needs. |
| ON Semi MUR160 | VRRM = 600V, trr = 75ns, VFM = 1.25V @ 1.5A, DO-41 package | Faster recovery but higher forward drop; tighter trr tolerance improves EMI control in noise-sensitive environments | Select when trr-driven switching loss dominates thermal budget, and 0.05V VFM penalty is acceptable for improved dynamic performance. |
Compared with STTH1L06U and MUR160, PR1505S-A offers optimal balance of axial-leaded manufacturability, proven thermal reliability at 1.5A, and cost-effective qualification for legacy through-hole production - making it suitable for maintenance, repair, and long-lifecycle industrial programs despite not being recommended for new designs.
Availability
PR1505S-A is available at Aetrix Electronics and suitable for AC/DC adapter front-ends, industrial SMPS input stages, and LED driver bulk rectification requiring stable component supply and long-term obsolescence management.
Supply support for PR1505S-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-reliability power management, signal integrity, and protection solutions for industrial, computing, and consumer markets.
The PR150x/S series belongs to Diodes' fast recovery rectifier product line, engineered specifically for cost-sensitive, thermally constrained AC/DC conversion applications where DO-41 form factor and JEDEC-compliant surge robustness are essential.
FAQ
Is PR1505S-A RoHS compliant?
Yes, PR1505S-A features lead-free finish and complies with RoHS Directive 2011/65/EU (Revision 13.2.2003), including exemptions for glass and high-temperature solder per EU Annex Notes 5 and 7. The device carries no hazardous substance restrictions beyond standard compliance limits.
What is the maximum ambient temperature for continuous 1.5A operation?
PR1505S-A delivers its rated 1.5A average forward current at TA = 50°C, provided leads are maintained at ambient temperature at 9.5mm from the case. At higher ambient temperatures, current must be derated per Figure 1 - e.g., 1.0A at 100°C ambient - due to thermal resistance of 35 K/W.
Can PR1505S-A replace PR1505-B in a DO-15 footprint?
No - PR1505S-A uses DO-41 package (smaller body, tighter lead spacing), while PR1505-B uses DO-15 (larger body, wider lead spacing). Mechanical incompatibility prevents direct footprint substitution; PCB layout revision is required for package change.
Why is PR1505S-A marked "NOT RECOMMENDED FOR NEW DESIGN"?
This designation reflects Diodes Incorporated's strategic shift toward surface-mount and higher-performance alternatives (e.g., faster trr, lower VFM, smaller packages). It does not indicate reliability issues - PR1505S-A remains fully qualified and supported for existing designs and repair programs.
PR1505S-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):
- 600 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):
- 250 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 600 V
- Capacitance @ Vr, F:
- 10pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-41
- Operating Temperature - Junction:
- -65°C ~ 150°C
PR1505S-A FAQ
1.How can I place an order for PR1505S-A through Aetrix?
Please submit a Request for Quotation (RFQ) for PR1505S-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 PR1505S-A reliable?
The price and inventory of PR1505S-A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PR1505S-A is usually 5 days.
3.What payment methods are accepted for PR1505S-A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PR1505S-A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PR1505S-A?
PR1505S-A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PR1505S-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 PR1505S-A?
For technical support, including PR1505S-A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PR1505S-A requirements.
6.How does Aetrix verify that PR1505S-A is sourced from the original manufacturer or authorized distributors?
All PR1505S-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 PR1505S-A meets industry standards.
7.What is the process for return or replacement of PR1505S-A?
All PR1505S-A units undergo pre-shipment inspection (PSI). If there is an issue with PR1505S-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 PR1505S-A part is unused and in its original packaging.
Return procedure for PR1505S-A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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