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Diodes Incorporated RH04-T
- Part No.:
- RH04-T
- Manufacturer:
- Diodes Incorporated
- Category:
- Bridge Rectifiers
- Package:
- 4-SMD, Gull Wing
- Datasheet:
-
RH04-T.pdf
- Description:
- BRIDGE RECT 1P 400V 0.5A 4-DIP
- Quantity:
- Payment:
- Shipping:
Inventory:6,765
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Product details
Overview
RH04-T from Diodes Incorporated is a 0.5A surface-mount standard recovery bridge rectifier with 400V peak repetitive reverse voltage, 1.15V max forward voltage at 0.4A, and 30A non-repetitive surge rating-designed for AC/DC front-end conversion in compact power supplies and LED drivers.
For engineers reviewing the RH04-T datasheet, RH04-T pinout, RH04-T application, or RH04-T equivalent, key selection criteria include its MiniDIP package footprint, 150ns reverse recovery time, RoHS-compliant bright tin plating, and suitability for automated SMT assembly in space-constrained industrial and consumer power designs.
Technical Context
This single-phase, full-wave bridge rectifier integrates four silicon diodes in a monolithic glass-passivated configuration. It operates across –55°C to +150°C junction temperature and supports 60Hz resistive/inductive loads without derating-capacitive loads require 20% current derating per specification.
Thermal resistance is 85°C/W (junction-to-ambient, mounted on PCB), and typical junction capacitance is 13pF per element at 1MHz/4V reverse bias. Reverse leakage remains ≤5µA at 25°C and ≤100µA at 125°C under rated DC blocking voltage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 400 V - Maximum peak reverse voltage the device blocks reliably in repetitive operation |
| IF(AV) | 0.5 A @ TA = +40°C - Average forward current capability under standard thermal conditions |
| VF Max | 1.15 V @ 0.4A - Forward voltage drop per diode element, directly impacting conduction loss in low-voltage output stages |
| tRR | 150 ns - Reverse recovery time per element, limiting usable frequency range in switching applications |
| IFSM | 30 A - Non-repetitive surge current handling for transient line events like cold-start or inrush |
| RθJA | 85 °C/W - Junction-to-ambient thermal resistance on standard PCB mount, defining heatsinking requirements |
| CJ | 13 pF - Typical junction capacitance per diode, influencing high-frequency noise coupling and EMI behavior |
Pinout & Package
Package: MiniDIP (4-pin, single-in-line molded plastic body, UL 94V-0 rated, 0.125g weight). Terminals are bright tin-plated, solderable per MIL-STD-202 Method 208.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| ~AC1 | AC Input Terminal 1 | One of two alternating-current input connections to the bridge; marked with polarity symbol on case |
| ~AC2 | AC Input Terminal 2 | Second AC input connection; forms full-wave rectification path with ~AC1 |
| +DC | Positive DC Output | Anode-side output node delivering rectified positive voltage to downstream filter and regulation |
| –DC | Negative DC Output / Common Cathode | Cathode-side return path; serves as circuit ground reference for the rectified output |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated die construction | Enhances long-term reliability and moisture resistance in humid or thermally cycling environments |
| Miniature MiniDIP package | Reduces PCB area by >40% vs. traditional DIP-4 bridges while enabling automated pick-and-place placement |
| UL Recognized (File #E364304) | Validates safety compliance for end-equipment certification in North American markets |
| Lead-free & RoHS 3 compliant | Meets EU Directive 2015/863/EU with all applicable exemptions applied for reliable global deployment |
| Surge rating: 30A IFSM | Withstands brief line transients without failure-critical for unregulated AC input stages in cost-sensitive designs |
Applications
| AC/DC Wall Adapters | LED Driver Input Stage |
|---|---|
Use Scenario: Converts 100–240VAC mains to pulsating DC before bulk capacitor filtering and DC/DC conversion. IC Role / Device Role: Full-wave bridge rectifier providing bidirectional AC-to-DC conversion with minimal footprint. Use Value: 0.5A rating and 400V VRRM support universal input; 1.15V VF limits conduction loss in low-cost flyback adapters. | Use Scenario: Rectifies AC input feeding constant-current LED driver ICs in commercial lighting fixtures. IC Role / Device Role: Primary-side AC interface component delivering stable DC bus to buck or buck-boost controller. Use Value: 150ns tRR ensures compatibility with 50/60Hz line frequency; MiniDIP enables high-density LED module layouts. |
| Industrial Control Power Supplies | Appliance Auxiliary Power Rails |
Use Scenario: Generates isolated 5V/12V auxiliary rails for PLC I/O modules and sensor interfaces. IC Role / Device Role: Input-stage rectifier in small off-line SMPS with integrated transformer and feedback. Use Value: –55°C to +150°C operating range supports wide ambient deployment; UL recognition simplifies system-level safety approval. | Use Scenario: Powers microcontroller, display, and communication subsystems in washing machines and HVAC controls. IC Role / Device Role: Mains-fed rectifier feeding linear regulator or low-power SMPS for always-on logic rails. Use Value: 30A surge rating handles motor startup transients; RoHS compliance meets global appliance regulatory mandates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bridge rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| GBU4K (ON Semiconductor) | Same 400V VRRM and 0.5A IF, but GBU package (larger, through-hole); tRR = 250ns | Requires PCB redesign for through-hole mounting; higher thermal mass suits higher ambient temp | Choose when legacy board reuse or higher surge margin (50A IFSM) outweighs SMT efficiency |
| MB6S (Vishay) | Same MiniDIP package and 0.5A/400V rating; tRR = 250ns; VF = 1.1V typical | Slightly lower forward drop but slower recovery-less suitable for high-frequency noise-sensitive designs | Prefer where conduction loss dominates over EMI concerns, and existing MB6S footprint is leveraged |
Compared with GBU4K and MB6S, RH04-T offers the fastest recovery (150ns) in MiniDIP format-advantageous for EMI-limited applications-while maintaining identical current/voltage ratings and superior SMT process compatibility.
Availability
RH04-T is available at Aetrix Electronics and suitable for AC/DC wall adapters, LED driver input stages, and industrial control power supplies requiring stable component supply with consistent MiniDIP packaging and RoHS compliance.
Supply support for RH04-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-reliability power management, signal integrity, and protection solutions.
RH04-T belongs to the RHxx series of standard recovery bridge rectifiers, engineered for cost-effective, space-efficient AC/DC conversion in consumer, industrial, and lighting applications where fast recovery and SMT compatibility are prioritized.
FAQ
What is the maximum operating temperature for RH04-T?
RH04-T has a specified operating and storage temperature range of –55°C to +150°C. Its junction-to-ambient thermal resistance is 85°C/W when mounted on a standard PCB, meaning sustained 0.5A operation at +125°C ambient requires careful layout to avoid exceeding the 150°C absolute maximum junction temperature.
Is RH04-T suitable for capacitive-load applications?
No-RH04-T must be derated by 20% in average forward current when used with capacitive loads, per datasheet Note 4. This is due to increased peak current stress during capacitor charging; for such applications, consider a higher-current-rated bridge or add inrush limiting.
Does RH04-T have automotive qualification?
RH04-T is not AEC-Q101 qualified. While Diodes offers automotive-grade variants in other families, this part is intended for industrial and consumer use. For automotive applications, contact Diodes directly to discuss PPAP-capable, IATF 16949-manufactured alternatives.
How does RH04-T compare to RH02-T and RH06-T?
RH04-T shares identical package, pinout, thermal characteristics, and electrical test conditions with RH02-T (200V) and RH06-T (600V). The only difference is peak reverse voltage rating-making them drop-in replacements in designs where voltage margin allows, provided VRRM meets system requirements.
RH04-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 4-SMD, Gull Wing
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Diode Type:
- Single Phase
- Technology:
- Standard
- Voltage - Peak Reverse (Max):
- 400 V
- Current - Average Rectified (Io):
- 500 mA
- Voltage - Forward (Vf) (Max) @ If:
- 1.15 V @ 400 mA
- Current - Reverse Leakage @ Vr:
- 5 µA @ 400 V
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 4-MiniDIP
RH04-T FAQ
1.How can I place an order for RH04-T through Aetrix?
Please submit a Request for Quotation (RFQ) for RH04-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 RH04-T reliable?
The price and inventory of RH04-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RH04-T is usually 5 days.
3.What payment methods are accepted for RH04-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RH04-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RH04-T?
RH04-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RH04-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 RH04-T?
For technical support, including RH04-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RH04-T requirements.
6.How does Aetrix verify that RH04-T is sourced from the original manufacturer or authorized distributors?
All RH04-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 RH04-T meets industry standards.
7.What is the process for return or replacement of RH04-T?
All RH04-T units undergo pre-shipment inspection (PSI). If there is an issue with RH04-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 RH04-T part is unused and in its original packaging.
Return procedure for RH04-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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