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Diodes Incorporated PR1001-T
- Part No.:
- PR1001-T
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
PR1001-T.pdf
- Description:
- DIODE GEN PURP 50V 1A DO41
- Quantity:
- Payment:
- Shipping:
Inventory:5,375
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Product details
Overview
PR1001-T from Diodes Incorporated is a 1.0A fast recovery rectifier diode in DO-41 package, rated for 50V peak repetitive reverse voltage (VRRM), 1.2V forward voltage drop at 1.0A (VFM), and 150ns reverse recovery time (tRR), used in AC/DC input stage rectification for low-power offline power supplies and adapter circuits.
For engineers reviewing the PR1001-T datasheet, PR1001-T pinout, PR1001-T application, or PR1001-T equivalent, key selection criteria include VRRM margin for line surge, tRR impact on switching loss in high-frequency flyback designs, IRM leakage at elevated temperature, and thermal resistance (RθJA = 75°C/W) for ambient-limited PCB layouts.
Technical Context
This device employs a diffused PN junction optimized for fast recovery (tRR = 150ns) with low stored charge, enabling efficient operation in 50–100kHz SMPS input rectifiers where reverse recovery losses must be minimized. Its 30A non-repetitive surge rating (IFSM) supports cold-start inrush handling in capacitive-input filter stages.
Designed for single-phase, half-wave rectification under resistive or inductive loads, it requires derating to 0.8A for capacitive loads per datasheet note. Thermal performance assumes leads maintained at ambient temperature at 9.5mm from case, reflecting standard DO-41 mounting practice on FR-4 PCBs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 50 V - Maximum allowable repetitive reverse voltage before breakdown; sets minimum insulation margin above peak AC line (e.g., 35V RMS → 49.5V peak). |
| IO @ TA=75°C | 1.0 A - Continuous average forward current capability at 75°C ambient; defines usable DC output current in thermally constrained designs. |
| VFM @ IF=1.0A | 1.2 V - Forward conduction loss at rated current; contributes ~1.2W dissipation per diode in series rectifier configuration. |
| tRR | 150 ns - Reverse recovery time measured at IF=0.5A, IR=1A, IRR=0.25A; directly impacts switching loss and EMI in high-frequency converters. |
| IRM @ 25°C | 5.0 µA - Reverse leakage at rated DC blocking voltage and room temperature; critical for low-power standby leakage budgets. |
| RθJA | 75 °C/W - Junction-to-ambient thermal resistance; determines temperature rise over ambient for given power dissipation (e.g., 0.8W → +60°C rise). |
Pinout & Package
DO-41 molded plastic package with axial leads; cathode identified by band marking; tin-plated leads compliant with MIL-STD-202, Method 208 solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to AC input or transformer secondary; must withstand full surge current (30A peak) during startup. |
| Cathode | Forward current exit / reverse voltage blocking terminal | Connected to bulk capacitor positive; polarity band ensures correct orientation to prevent catastrophic failure. |
Key Features
| Feature | Design Value |
|---|---|
| Fast recovery (tRR = 150 ns) | Reduces reverse recovery charge (Qrr) and associated switching loss in 50–100 kHz flyback and forward converters. |
| Low VFM (1.2 V @ 1.0 A) | Lowers conduction loss versus standard recovery diodes, improving efficiency in low-voltage-output adapters. |
| 30 A IFSM surge rating | Withstands inrush current into large input capacitors without degradation, eliminating need for external NTC thermistors in cost-sensitive designs. |
| DO-41 package with UL 94V-0 rating | Enables through-hole mounting on flame-retardant PCBs meeting safety standards for Class II power supplies. |
Applications
| AC/DC Wall Adapters | USB Charging Power Supplies |
|---|---|
Use Scenario: Rectifying 50/60Hz AC from mains transformer or bridge in compact 5–12V, <10W wall adapters. IC Role / Device Role / Timing Role: Input-stage unidirectional current switch converting AC to pulsating DC prior to bulk capacitance. Use Value: 150ns tRR minimizes switching noise coupling into feedback circuitry; 1.2V VFM maintains >75% efficiency at light load. | Use Scenario: Single-diode half-wave rectifier in ultra-low-cost USB-A 5V chargers with minimal BOM count. IC Role / Device Role / Timing Role: Low-component-count AC input rectifier replacing full-bridge when size/cost outweigh efficiency trade-offs. Use Value: DO-41 footprint allows manual assembly and rework; RoHS-compliant tin plating ensures lead-free solder compatibility. |
| Industrial Control Power Modules | LED Driver Auxiliary Supplies |
Use Scenario: Providing isolated 12–24V bias supply for PLC I/O modules operating in -40°C to +85°C ambient. IC Role / Device Role / Timing Role: Primary-side rectifier feeding linear regulator or buck controller IC for control logic rail. Use Value: -65°C to +150°C operating range supports wide industrial temperature compliance; 5µA IRM prevents standby current drift. | Use Scenario: Generating low-current auxiliary VCC for LED driver ICs in constant-current streetlight drivers. IC Role / Device Role / Timing Role: High-reliability rectifier supplying gate drive or bias power independent of main LED string path. Use Value: 75°C/W RθJA enables direct PCB trace heatsinking; 30A IFSM tolerates lightning-induced surges on outdoor-rated inputs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fast recovery rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| RS1A-T | VRRM = 50V, tRR = 250ns, VFM = 1.3V, RθJA = 70°C/W | Slower recovery increases switching loss above 50kHz; slightly higher VFM raises conduction loss. | Preferred where lower thermal resistance offsets slower tRR in thermally limited layouts. |
| 1N4933 | VRRM = 50V, tRR = 200ns, VFM = 1.2V, IFSM = 30A, DO-41 | Identical surge rating and forward drop; 50ns longer tRR than PR1001-T affects high-frequency EMI. | Valid drop-in for legacy designs; not recommended for new 100kHz+ flyback topologies requiring minimal Qrr. |
Compared with RS1A-T and 1N4933, PR1001-T offers the fastest tRR (150ns) among 50V 1A DO-41 rectifiers, delivering lowest reverse recovery loss in high-frequency SMPS while maintaining identical surge and thermal robustness.
Availability
PR1001-T is available at Aetrix Electronics and suitable for AC/DC wall adapters, USB charging power supplies, and industrial control power modules requiring stable component supply and long-term manufacturability.
Supply support for PR1001-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 consumer, industrial, and automotive markets.
The PR1001-T belongs to the PR100x fast recovery rectifier family, engineered specifically for cost-sensitive, space-constrained AC/DC front-end rectification where low VFM and fast tRR improve efficiency without increasing package size.
FAQ
What is the maximum operating temperature for PR1001-T?
The PR1001-T has an operating junction temperature range of -65°C to +150°C, with storage temperature matching this span. Derating begins at +75°C ambient for full 1.0A average current, per Figure 1 in DS26008. At +100°C ambient, maximum continuous IO drops to approximately 0.65A due to thermal limits.
Is PR1001-T compatible with lead-free reflow soldering?
Yes - PR1001-T features tin-plated leads qualified to MIL-STD-202, Method 208, and is RoHS 3 compliant (2015/863/EU). It withstands standard lead-free reflow profiles (peak 260°C, 10s max), though its DO-41 axial package is typically wave- or hand-soldered rather than reflowed.
How does PR1001-T compare to standard recovery rectifiers like 1N4001?
PR1001-T offers 150ns reverse recovery versus >30µs for 1N4001, reducing switching loss and EMI in high-frequency SMPS. Its 1.2V VFM is comparable, but its 30A IFSM exceeds 1N4001's 30A only at 8.3ms - both meet surge requirements, yet PR1001-T enables higher-frequency designs.
Can PR1001-T be used in full-wave bridge configurations?
No - PR1001-T is a single die, single-junction rectifier intended for half-wave or discrete bridge use. For full-wave bridge applications, Diodes Incorporated recommends integrated bridges like DB101–DB107 or discrete pairs such as PR1001-T + PR1001-T wired appropriately; standalone use requires external companion diodes.
PR1001-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- DO-204AL, DO-41, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 50 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 1.2 V @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 150 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 50 V
- Capacitance @ Vr, F:
- 15pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-41
- Operating Temperature - Junction:
- -65°C ~ 150°C
PR1001-T FAQ
1.How can I place an order for PR1001-T through Aetrix?
Please submit a Request for Quotation (RFQ) for PR1001-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 PR1001-T reliable?
The price and inventory of PR1001-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PR1001-T is usually 5 days.
3.What payment methods are accepted for PR1001-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PR1001-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PR1001-T?
PR1001-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PR1001-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 PR1001-T?
For technical support, including PR1001-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PR1001-T requirements.
6.How does Aetrix verify that PR1001-T is sourced from the original manufacturer or authorized distributors?
All PR1001-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 PR1001-T meets industry standards.
7.What is the process for return or replacement of PR1001-T?
All PR1001-T units undergo pre-shipment inspection (PSI). If there is an issue with PR1001-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 PR1001-T part is unused and in its original packaging.
Return procedure for PR1001-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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