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Diodes Incorporated PR1502S-B
- Part No.:
- PR1502S-B
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
PR1502S-B.pdf
- Description:
- DIODE GEN PURP 100V 1.5A DO41
- Quantity:
- Payment:
- Shipping:
Inventory:2,286
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Product details
Overview
PR1502S-B from Diodes Incorporated is a 1.5A fast recovery rectifier diode in DO-41 package, rated for 100V peak repetitive reverse voltage (VRRM), 1.2V forward voltage at 1.5A, and 150ns reverse recovery time - optimized for high-efficiency AC/DC input stages in offline power supplies and LED drivers.
For engineers reviewing the PR1502S-B datasheet, PR1502S-B pinout, PR1502S-B application, or PR1502S-B equivalent, key selection criteria include its 50A non-repetitive surge rating, low 5.0µA reverse leakage at 25°C, RoHS-compliant bright tin-plated leads, and thermal resistance of 35K/W - critical for thermally constrained board 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 operation in 50–100kHz SMPS front-end rectification without excessive switching loss or EMI generation.
The DO-41 package provides standardized axial lead mounting with UL 94V-0 flammability rating and moisture sensitivity level 1. Thermal performance is specified assuming 9.5mm lead length maintained at ambient temperature - a practical constraint for PCB trace layout and heatsinking decisions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 100 V - Maximum allowable repetitive reverse voltage before breakdown; sets safe operating margin for 85–265VAC input rectification. |
| IO @ TA=50°C | 1.5 A - Continuous average forward current under defined thermal conditions; requires derating above 50°C ambient. |
| VFM @ IF=1.5A | 1.2 V - Forward voltage drop determining conduction loss (1.8W max at full load); impacts efficiency and thermal design. |
| IFSM (8.3ms) | 50 A - Peak surge current capability during cold-start or line transients; supports robust inrush handling. |
| trr | 150 ns - Reverse recovery time defining switching speed; limits usable frequency range and influences snubber design. |
| IRM @ 25°C | 5.0 µA - Reverse leakage at rated DC blocking voltage; affects standby power and high-impedance bias networks. |
| RJA | 35 K/W - Junction-to-ambient thermal resistance; defines temperature rise per watt dissipated without heatsink. |
Pinout & Package
DO-41 axial-leaded plastic package with cathode band marking. Leads are bright tin-plated, solderable per MIL-STD-202 Method 208. Case meets UL 94V-0 flammability rating. Weight ≈ 0.3 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to AC input or transformer secondary; polarity must align with circuit topology to avoid reverse conduction. |
| Cathode (banded end) | Forward current exit / reverse blocking terminal | Connected to bulk capacitor or downstream converter; cathode band identifies polarity for correct PCB placement and visual inspection. |
Key Features
| Feature | Design Value |
|---|---|
| Fast recovery (150ns trr) | Enables efficient operation up to ~100kHz without excessive switching loss or ringing in flyback/forward converters. |
| Low VFM (1.2V @ 1.5A) | Reduces conduction loss by ~15% vs. standard 1N400x series, improving thermal margin in compact enclosures. |
| 50A IFSM surge rating | Withstands repeated cold-start surges in universal-input AC/DC adapters without degradation. |
| RoHS-compliant finish | Bright tin plating ensures reliable solder wetting and long-term intermetallic stability under thermal cycling. |
| DO-41 mechanical standardization | Supports automated axial insertion and wave soldering; compatible with legacy tooling and inspection workflows. |
Applications
| AC/DC Adapter Input Stage | LED Driver Bridge Rectifier |
|---|---|
Use Scenario: Single-phase, half-wave rectification in 5–25W universal-input (85–265VAC) wall adapters feeding buck or flyback controllers. IC Role / Device Role / Timing Role: Primary-side unidirectional current path; converts AC line to pulsating DC prior to bulk capacitance and regulation. Use Value: 1.2V VFM minimizes heat buildup in sealed plastic housings; 150ns trr reduces EMI filtering burden compared to slower 1N4007. | Use Scenario: Full-wave bridge configuration (4× PR1502S-B) in constant-current LED drivers for commercial lighting. IC Role / Device Role / Timing Role: High-reliability AC input rectification with low thermal resistance to sustain 50°C ambient operation. Use Value: 35K/W RJA and 150°C max junction temperature allow continuous operation without forced air cooling in enclosed fixtures. |
| Industrial Control Power Supply | Appliance Motor Drive Front-End |
Use Scenario: Auxiliary power supply for PLC I/O modules requiring stable +5V/+12V rails from 24VAC or 115VAC inputs. IC Role / Device Role / Timing Role: Isolated rectifier in transformer-coupled auxiliary winding; delivers low-noise DC for logic and sensing circuits. Use Value: 5.0µA IRM at 25°C prevents leakage-induced reset faults in high-impedance supervisor circuits. | Use Scenario: Rectification stage in single-phase motor drive inverters for washing machines and HVAC blowers. IC Role / Device Role / Timing Role: Pre-regulator diode feeding bulk capacitor bank; handles 50A surge during compressor startup. Use Value: 50A IFSM rating eliminates need for external surge resistors or NTC thermistors in cost-sensitive designs. |
Availability
PR1502S-B is available at Aetrix Electronics and suitable for AC/DC adapter input stages, LED driver bridge rectifiers, industrial control power supplies, and appliance motor drive front-ends requiring stable component supply and long-term sourcing continuity.
Supply support for PR1502S-B 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 applications.
The PR150x/S series targets cost-sensitive, thermally constrained AC/DC front-end designs where fast recovery, low VF, and proven DO-41 reliability are prioritized over ultra-high voltage or ultra-low leakage.
Equivalent & Alternatives
The following parts are listed as comparable options for similar fast recovery rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4934G | VRRM = 100V, VFM = 1.3V @ 1.0A, trr = 200ns, DO-41 | Higher VF and slower recovery increase conduction and switching loss in >50kHz designs | Acceptable for low-frequency (<30kHz), low-cost replacements where efficiency is secondary |
| ES1J | VRRM = 600V, VFM = 1.7V @ 1.0A, trr = 35ns, SMA | Surface-mount package and higher voltage rating suit modern SMT layouts but require board redesign | Preferred for new SMT-based designs needing faster recovery and higher voltage margin |
Compared with 1N4934G, PR1502S-B offers lower VF and faster trr for better efficiency; versus ES1J, it retains through-hole compatibility and lower VF but lacks SMT scalability and higher VRRM headroom.
FAQ
What is the maximum operating temperature for PR1502S-B?
The PR1502S-B has an operating junction temperature range of –65°C to +150°C. Its maximum ambient temperature depends on power dissipation and PCB thermal design; at 1.5A average current and 1.2V forward drop, junction temperature rises 35°C per watt above ambient - limiting continuous operation to ≤115°C ambient when mounted per JEDEC standard (9.5mm lead length).
Is PR1502S-B suitable for capacitive-load applications?
No - the datasheet explicitly states that for capacitive loads, the average rectified current must be derated by 20%. This is due to high inrush currents causing localized heating and accelerated degradation; use with bulk capacitors requires careful soft-start design or series inrush limiting.
Does PR1502S-B meet lead-free and RoHS requirements?
Yes - PR1502S-B features bright tin-plated leads and complies with RoHS Directive 2002/95/EC (as revised March 13, 2003), including exemptions for glass and high-temperature solder per EU Annex Notes 5 and 7. It is marked "Lead Free" and qualified to J-STD-020C moisture sensitivity level 1.
Why is PR1502S-B marked "NOT RECOMMENDED FOR NEW DESIGN"?
This designation reflects Diodes Incorporated's strategic shift toward surface-mount packages (e.g., SMA, SOD-123) and higher-performance fast recovery families (e.g., ESxJ, FxJ). While PR1502S-B remains fully functional and supported, new designs are encouraged to adopt SMT alternatives for improved manufacturability, thermal performance, and long-term supply assurance.
PR1502S-B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- DO-204AL, DO-41, Axial
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 100 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 @ 100 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
PR1502S-B FAQ
1.How can I place an order for PR1502S-B through Aetrix?
Please submit a Request for Quotation (RFQ) for PR1502S-B 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 PR1502S-B reliable?
The price and inventory of PR1502S-B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PR1502S-B is usually 5 days.
3.What payment methods are accepted for PR1502S-B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PR1502S-B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PR1502S-B?
PR1502S-B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PR1502S-B 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 PR1502S-B?
For technical support, including PR1502S-B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PR1502S-B requirements.
6.How does Aetrix verify that PR1502S-B is sourced from the original manufacturer or authorized distributors?
All PR1502S-B 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 PR1502S-B meets industry standards.
7.What is the process for return or replacement of PR1502S-B?
All PR1502S-B units undergo pre-shipment inspection (PSI). If there is an issue with PR1502S-B, 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 PR1502S-B part is unused and in its original packaging.
Return procedure for PR1502S-B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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