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Diodes Incorporated PR1004-T
- Part No.:
- PR1004-T
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
PR1004-T.pdf
- Description:
- DIODE GEN PURP 400V 1A DO41
- Quantity:
- Payment:
- Shipping:
Inventory:5,553
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Product details
Overview
PR1004-T from Diodes Incorporated is a 1.0A fast recovery rectifier diode in DO-41 package, rated for 400V 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 offline switch-mode power supplies.
For engineers reviewing the PR1004-T datasheet, PR1004-T pinout, PR1004-T application, or PR1004-T equivalent, key selection criteria include VRRM derating margin for line surge, tRR impact on EMI in high-frequency converters, thermal resistance (RθJA = 75°C/W) for board-level heatsinking, and low IRM (5.0μA @ 25°C) for standby leakage control.
Technical Context
This device employs a diffused PN junction optimized for fast switching with minimal minority carrier storage, enabling efficient operation in 50–100kHz SMPS front-end rectifiers. Its 30A non-repetitive surge rating (IFSM) supports cold-start inrush handling without failure.
The DO-41 package provides axial-leaded mechanical robustness and standardized solderability per MIL-STD-202, Method 208, with cathode band polarity marking and RoHS-compliant tin-plated leads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 400V - Withstands peak line transients up to 320V RMS mains with safety margin in universal-input AC/DC designs. |
| VFM @ 1.0A | 1.2V - Limits conduction loss to 1.2W at full load, reducing thermal stress in compact PCB layouts. |
| tRR | 150ns - Minimizes switching loss and EMI generation during turn-off in high-frequency bridge configurations. |
| IFSM | 30A - Survives single-cycle surges from capacitor-charging inrush without degradation. |
| IRM @ 25°C | 5.0μA - Ensures <100nW reverse leakage at room temperature, critical for low-power standby circuits. |
| RθJA | 75°C/W - Requires ≥100mm² copper pour for safe 1.0A continuous operation at 75°C ambient. |
Pinout & Package
DO-41 axial-leaded plastic package with cathode band marking; lead finish is matte tin, compliant with RoHS and solderable per MIL-STD-202, Method 208.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | AC input connection point | Accepts alternating waveform; must be routed with clearance for 400V transient isolation. |
| Cathode | DC output connection point | Delivers rectified positive half-cycles; marked by visible band; connects to bulk capacitor positive rail. |
Key Features
| Feature | Design Value |
|---|---|
| Fast recovery (tRR = 150ns) | Reduces reverse recovery charge (Qrr) to ~25nC, lowering switching loss in 65–100kHz flyback converters. |
| Low VFM (1.2V @ 1.0A) | Improves efficiency by >0.8% vs. standard 1N4007 in 12V/1A adapter designs at full load. |
| 30A IFSM surge rating | Eliminates need for external NTC thermistor in cost-sensitive consumer power supplies. |
| DO-41 mechanical standardization | Enables direct replacement of legacy 1N4937/RS1M in existing through-hole PCB footprints. |
Applications
| AC/DC Adapter Input Rectification | Industrial Control Power Supply |
|---|---|
Use Scenario: 100–240VAC input rectification feeding 300V DC bus in 12W wall-wart adapters. IC Role / Device Role / Timing Role: Unidirectional current valve converting AC line to pulsating DC prior to bulk capacitance. Use Value: 150ns tRR suppresses high-frequency ringing, easing EMI filter design and meeting CISPR-32 Class B limits. | Use Scenario: 24VDC system powered from 120VAC mains via DIN-rail mounted PSU with wide ambient range. IC Role / Device Role / Timing Role: Primary-side rectifier in transformer-isolated linear or quasi-resonant supply. Use Value: 75°C/W RθJA allows operation at 75°C ambient without forced air, supporting fanless industrial enclosures. |
| LED Driver Bulk Rectification | Appliance Main Power Stage |
Use Scenario: Off-line LED driver for commercial downlights with passive PFC and constant-current output. IC Role / Device Role / Timing Role: Input bridge leg component handling 50Hz/60Hz line frequency rectification. Use Value: 5.0μA IRM ensures <1mW standby dissipation, meeting Energy Star v2.0 no-load power requirements. | Use Scenario: Power conversion in smart washing machine mainboard supplying MCU, motor drive, and display rails. IC Role / Device Role / Timing Role: High-reliability AC input rectifier exposed to grid instability and motor-induced transients. Use Value: 30A IFSM withstands repeated compressor startup surges without parameter drift or failure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fast recovery rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| RS1M-T | VRRM = 1000V, tRR = 500ns, VFM = 1.3V @ 1.0A | Higher voltage margin but slower recovery increases switching loss in >50kHz designs. | Prefer RS1M-T only when line surge exceeds 400V or long-term reliability under overvoltage stress is prioritized over efficiency. |
| 1N4937 | VRRM = 600V, tRR = 200ns, VFM = 1.2V @ 1.0A, RθJA = 80°C/W | Slightly higher thermal resistance and longer tRR reduce efficiency in thermally constrained layouts. | Select 1N4937 where legacy qualification or dual-sourcing across multiple suppliers is required, accepting minor thermal penalty. |
Compared with RS1M-T and 1N4937, PR1004-T delivers optimal balance of 400V rating, 150ns speed, and 75°C/W thermal performance for cost-sensitive, space-constrained 50–100kHz AC/DC converters requiring <1.2V conduction loss.
Availability
PR1004-T is available at Aetrix Electronics and suitable for AC/DC adapter input rectification, industrial control power supplies, LED driver bulk rectification, and appliance main power stages requiring stable component supply and RoHS-compliant sourcing.
Supply support for PR1004-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, signal integrity, and protection solutions for industrial, computing, and consumer markets.
The PR1001–PR1005 series targets cost-optimized, high-reliability rectification in universal-input offline power supplies, emphasizing fast recovery, surge resilience, and manufacturability in standard DO-41 assembly lines.
FAQ
What is the maximum operating temperature for PR1004-T?
The PR1004-T has an operating junction temperature range of –65°C to +150°C. Continuous operation at 1.0A average forward current requires maintaining ambient temperature ≤75°C with adequate PCB copper area, as specified in Figure 1 of DS26008. Exceeding this ambient limit risks thermal runaway due to its 75°C/W junction-to-ambient thermal resistance.
Can PR1004-T replace 1N4007 in existing designs?
PR1004-T is not a direct replacement for 1N4007 due to its higher VRRM (400V vs. 1000V) and faster tRR (150ns vs. 30μs). It may be substituted only if the circuit operates below 400V peak reverse stress and benefits from reduced switching loss-such as in high-frequency SMPS-but requires validation of EMI and surge margin.
Is PR1004-T suitable for use in automotive applications?
No-PR1004-T is not qualified to AEC-Q101 and lacks automotive-grade screening, temperature cycling, or humidity testing. Its –65°C to +150°C rating refers to storage and operation limits, not automotive qualification. For automotive front-end rectification, Diodes Incorporated recommends the AEC-Q101-qualified SB140 or SB240 series.
Does PR1004-T require heatsinking in typical applications?
Heatsinking is not required for PR1004-T at ≤1.0A average current if ≥100mm² of 1oz copper is connected to each lead, per its RθJA = 75°C/W rating. In enclosed or high-ambient environments (>50°C), adding thermal vias or local copper pours improves reliability, but forced-air cooling is unnecessary for standard adapter or LED driver use cases.
PR1004-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- DO-204AL, DO-41, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 400 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 @ 400 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
PR1004-T FAQ
1.How can I place an order for PR1004-T through Aetrix?
Please submit a Request for Quotation (RFQ) for PR1004-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 PR1004-T reliable?
The price and inventory of PR1004-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PR1004-T is usually 5 days.
3.What payment methods are accepted for PR1004-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PR1004-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PR1004-T?
PR1004-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PR1004-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 PR1004-T?
For technical support, including PR1004-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PR1004-T requirements.
6.How does Aetrix verify that PR1004-T is sourced from the original manufacturer or authorized distributors?
All PR1004-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 PR1004-T meets industry standards.
7.What is the process for return or replacement of PR1004-T?
All PR1004-T units undergo pre-shipment inspection (PSI). If there is an issue with PR1004-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 PR1004-T part is unused and in its original packaging.
Return procedure for PR1004-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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