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Diodes Incorporated PBU805
- Part No.:
- PBU805
- Manufacturer:
- Diodes Incorporated
- Category:
- Bridge Rectifiers
- Package:
- 4-SIP, PBU
- Datasheet:
-
PBU805.pdf
- Description:
- BRIDGE RECT 1PHASE 600V 8A PBU
- Quantity:
- Payment:
- Shipping:
Inventory:4,536
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Product details
Overview
PBU805 from Diodes Incorporated is an 8.0A, 600V peak repetitive reverse voltage (VRRM) single-phase bridge rectifier in a molded plastic through-hole package with #6 screw mounting. It delivers low forward voltage drop (1.0V @ 2.0A per element), supports 300A non-repetitive surge current (8.3ms), and operates from –65°C to +150°C. It is used in AC/DC power supplies for industrial motor drives requiring high-current, high-voltage rectification with heatsink mounting.
For engineers reviewing the PBU805 datasheet, PBU805 pinout, PBU805 application, or PBU805 equivalent, key selection criteria include VRRM rating, thermal resistance (7.5°C/W), IFSM surge capability, case temperature derating curve, and UL 94V-0 flammability compliance for PCB-mounted power conversion systems.
Technical Context
The PBU805 integrates four silicon diodes in a single-phase full-wave bridge configuration, optimized for resistive or inductive loads at 60Hz line frequency. Its 600V VRRM rating enables use in 400VAC input systems after derating, and its 7.5°C/W junction-to-case thermal resistance requires external heatsinking for sustained 8.0A operation at TC = 100°C.
It exhibits low 1.0V forward voltage per diode element at 2.0A, reducing conduction losses, and maintains <10µA reverse leakage at 25°C - critical for efficiency in offline SMPS front-end rectifiers. Capacitance per element is 100pF at 4V reverse bias (f = 1MHz), limiting high-frequency switching noise coupling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 600 V - Maximum peak reverse voltage the device withstands without breakdown; defines max AC input voltage compatibility (e.g., 400VAC RMS with margin) |
| IO @ TC = 100°C | 8.0 A - Average rectified output current sustainable with case temperature held at 100°C using heatsink |
| VFM @ IF = 2.0A | 1.0 V - Forward voltage per diode element; determines conduction loss (2.0W total for full bridge at 2.0A DC output) |
| IFSM (8.3ms) | 300 A - Non-repetitive surge current tolerance; supports inrush current handling during power-up of capacitive-input supplies |
| RJC | 7.5 °C/W - Junction-to-case thermal resistance; dictates minimum heatsink size required to maintain Tj ≤ 150°C under full load |
| IR @ 25°C | 10 µA - Peak reverse leakage per element at rated VR; ensures minimal standby power loss in off-state |
| Tj, TSTG | –65°C to +150°C - Operating and storage temperature range; supports deployment in harsh industrial environments |
Pinout & Package
Package: Molded plastic case with 4-plated leads (A–D), designed for through-hole PCB mounting and #6 screw mechanical fixation. Terminal isolation voltage: 1500V. Weight: ~8.0 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A | AC Input 1 (Anode of D1 / Cathode of D2) | One AC input terminal; connects to live AC line; must be routed with creepage clearance ≥3.2mm for 600V applications |
| B | AC Input 2 (Anode of D3 / Cathode of D4) | Second AC input terminal; connects to neutral AC line; paired with Pin A to form full-wave input port |
| C | DC Positive Output (Cathodes of D1 & D3) | Rectified positive DC bus node; carries full IO current; requires heavy copper pour and thermal relief for heatsink interface |
| D | DC Negative Output (Anodes of D2 & D4) | Rectified negative DC bus node (common return); referenced to chassis ground in many designs; isolated at 1500V from case |
Key Features
| Feature | Design Value |
|---|---|
| Low forward voltage drop | 1.0 V per diode at 2.0A - reduces conduction loss by ~15% vs. standard 1.15V bridges, improving efficiency in 100–500W supplies |
| High surge current rating | 300A IFSM (8.3ms) - withstands repeated cold-start surges in motor drive inverters without degradation |
| UL 94V-0 certified plastic case | Flame-retardant housing - meets safety requirements for enclosed industrial power enclosures without additional potting |
| Case-to-terminal isolation | 1500V isolation - enables direct mounting to grounded heatsinks without insulating pads in Class I AC/DC systems |
| Lead-free & RoHS compliant | Compliant since date code 0514+ - satisfies EU WEEE and RoHS directives for global OEM shipments |
Applications
| Industrial Motor Drive Power Supply | Commercial HVAC Control Board |
|---|---|
Use Scenario: Converts 230VAC mains to unregulated DC bus for 3-phase IGBT inverter stage in 5–10kW variable frequency drives. IC Role / Device Role / Timing Role: Primary AC/DC rectifier; provides 8.0A continuous DC current with thermal stability up to 100°C case temperature. Use Value: 7.5°C/W RJC enables compact heatsink integration; 300A IFSM handles motor startup surges without fuse coordination issues. | Use Scenario: Supplies 24VDC control logic and relay coils from 120VAC input on rooftop HVAC unit mainboard. IC Role / Device Role / Timing Role: Off-line bridge rectifier feeding capacitor-input filter and linear regulator; operates at 30–40% IO rating for reliability. Use Value: UL 94V-0 case eliminates need for flame-barrier shields; 1500V isolation allows direct heatsink grounding per UL 60730. |
| LED Streetlight Driver | Industrial PLC Power Module |
Use Scenario: Front-end rectification in 150W constant-current LED driver with passive PFC and flyback topology. IC Role / Device Role / Timing Role: High-voltage bridge delivering 8.0A peak current to bulk capacitor; thermally coupled to aluminum PCB heatsink. Use Value: 600V VRRM accommodates 277VAC nominal input with 20% line swell; 10µA IR minimizes no-load power loss. | Use Scenario: Dual-rail DC supply generation (±15V) for analog I/O conditioning circuits in modular PLC backplanes. IC Role / Device Role / Timing Role: Single bridge feeding center-tapped transformer secondary; provides isolated dual-polarity rectified outputs. Use Value: Through-hole #6 screw mount ensures vibration resistance in factory-floor installations; –65°C to +150°C rating supports extended ambient ranges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bridge rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| GBU805 | Same VRRM (600V), IO (8.0A), and package outline; slightly higher VFM (1.1V @ 2.0A) and RJC (8.0°C/W) | Lower surge rating (250A vs. 300A); not rated for 1500V case isolation | Acceptable where surge margin and isolation are non-critical; lower cost but requires insulating pad for grounded heatsinks |
| KBPC805 | Identical electrical ratings; larger metal-can package with higher thermal mass but no screw mount | No integrated mounting hardware; requires separate standoff and torque control; heavier (12g) | Preferred when mechanical robustness outweighs PCB footprint; unsuitable for space-constrained layouts needing #6 screw fixturing |
Compared with GBU805 and KBPC805, the PBU805 uniquely combines 300A surge capability, 1500V isolation, and standardized #6 screw mounting - making it optimal for industrial power supplies where mechanical reliability, thermal management, and safety certification are co-constrained.
Availability
PBU805 is available at Aetrix Electronics and suitable for industrial motor drives, commercial HVAC control boards, LED streetlight drivers, and PLC power modules requiring stable component supply across multi-year production cycles.
Supply support for PBU805 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 PBU series belongs to Diodes' high-current bridge rectifier product line, engineered for ruggedized AC/DC conversion in demanding environments - emphasizing thermal performance, surge resilience, and regulatory compliance (UL, RoHS).
FAQ
What is the maximum allowable case temperature for continuous 8.0A operation?
The PBU805 is rated for 8.0A average output current only when the case temperature (TC) is maintained at or below 100°C, as specified in the derating curve. Exceeding this temperature requires proportional current reduction - e.g., 6.0A at TC = 125°C - to prevent junction overheating beyond the 150°C absolute maximum.
Can PBU805 be mounted directly to a grounded metal heatsink without insulation?
Yes. The PBU805 provides 1500V isolation between terminals and case, allowing direct mechanical mounting to a grounded heatsink without insulating washers or pads - provided creepage and clearance distances meet IEC 62368-1 requirements for the system's working voltage.
Is PBU805 suitable for capacitive-input filter applications?
No - the datasheet explicitly states that for capacitive loads, the average output current must be derated by 20%. At full 8.0A rating, this limits use to resistive or inductive loads; for capacitor-input supplies, maximum continuous current is 6.4A with appropriate thermal design.
Does PBU805 comply with lead-free and RoHS requirements?
Yes. PBU805 features lead-free terminations and complies with EU Directive 2002/95/EC (RoHS), including exemptions for high-temperature solder and glass passivation. Compliance applies to all units manufactured from date code 0514 onward, verified via material declarations and testing.
PBU805 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 4-SIP, PBU
- Packaging:
- Box
- Product Status:
- Obsolete
- Diode Type:
- Single Phase
- Technology:
- Standard
- Voltage - Peak Reverse (Max):
- 600 V
- Current - Average Rectified (Io):
- 8 A
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 2 A
- Current - Reverse Leakage @ Vr:
- 10 µA @ 600 V
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- PBU
PBU805 FAQ
1.How can I place an order for PBU805 through Aetrix?
Please submit a Request for Quotation (RFQ) for PBU805 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 PBU805 reliable?
The price and inventory of PBU805 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PBU805 is usually 5 days.
3.What payment methods are accepted for PBU805?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PBU805 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PBU805?
PBU805 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PBU805 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 PBU805?
For technical support, including PBU805 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PBU805 requirements.
6.How does Aetrix verify that PBU805 is sourced from the original manufacturer or authorized distributors?
All PBU805 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 PBU805 meets industry standards.
7.What is the process for return or replacement of PBU805?
All PBU805 units undergo pre-shipment inspection (PSI). If there is an issue with PBU805, 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 PBU805 part is unused and in its original packaging.
Return procedure for PBU805:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PBU805 Tags
-
HDS10M-13
Diodes Incorporated
-
CD-MBL106S
Bourns Inc.
-
MB10S-13
Diodes Incorporated
-
CD-MBL206SL
Bourns Inc.
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MB4S-TP
Micro Commercial Co
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MB6S-TP
Micro Commercial Co
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CD-MBL210S
Bourns Inc.
-
BAS3007ARPPE6327HTSA1
Infineon Technologies
-
DF02M
Diodes Incorporated
-
CD-MBL210SL
Bourns Inc.
-
DF04M
Diodes Incorporated
-
DF01M
Diodes Incorporated
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