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Renesas RKR0303AKJ#R6
- Part No.:
- RKR0303AKJ#R6
- Manufacturer:
- Renesas
- Category:
- Single Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
RKR0303AKJ#R6.pdf
- Description:
- DIODE SCHOTTKY 30V 300MA 2UFP
- Quantity:
- Payment:
- Shipping:
Inventory:656,000
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Product details
Overview
RKR0303AKJ#R6 from Renesas Electronics is a silicon Schottky barrier diode optimized for low-loss rectification in space-constrained DC/DC converters and portable power supplies, featuring 30 V repetitive peak reverse voltage, 0.3 A forward current rating, 0.42 V max forward voltage at 300 mA, 200 µA max reverse leakage at 30 V, and ultra-small UFP (SC-79) surface-mount package.
For engineers reviewing the RKR0303AKJ#R6 datasheet, RKR0303AKJ#R6 pinout, RKR0303AKJ#R6 application, or RKR0303AKJ#R6 equivalent, key selection criteria include forward voltage drop under 300 mA load, thermal resistance of 600°C/W on polyimide board, cathode-anode polarity confirmation, and compatibility with high-density PCB layouts requiring sub-2 mm footprint devices.
Technical Context
The RKR0303AKJ#R6 implements a planar Schottky junction structure to achieve low VF and fast switching with no minority-carrier storage delay. Its 30 V VRRM rating targets 5–24 V input rail rectification, while the 1 A non-repetitive surge rating supports transient load conditions in buck converter freewheeling paths.
Thermal design relies on its 600°C/W junction-to-ambient resistance measured on polyimide board - a critical constraint for continuous 0.3 A operation above 75°C ambient. The UFP package exposes lead tips as cutting planes, requiring solderability validation per manufacturer notice.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 30 V - Maximum repetitive reverse voltage before breakdown; sets upper limit for input-side blocking in 24 V systems. |
| IF | 0.3 A - Continuous forward current rating; defines steady-state conduction capability in low-power SMPS outputs. |
| VF (max) | 0.42 V @ 300 mA - Directly determines conduction loss (P = IF × VF); enables >90% efficiency in 3.3–5 V output stages. |
| IR (max) | 200 µA @ 30 V - Reverse leakage magnitude affecting standby power in always-on circuits and battery drain. |
| Rth(j-a) | 600 °C/W - Thermal resistance on polyimide board; requires derating above 75°C ambient to maintain 125°C junction limit. |
| Package | UFP (SC-79) - 1.5 × 0.8 × 0.8 mm footprint; enables <2.0 mm² board area usage in ultra-compact designs. |
Pinout & Package
UFP (Ultra small Flat Lead) package: 2-terminal surface-mount device with molded plastic body, exposed lead tips (cutting plane), and cathode marking on top surface. Dimensions: 1.5 mm × 0.8 mm × 0.8 mm (L × W × T).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode | Connected to higher-potential node during forward conduction; marked side of package; ties to switch node in synchronous rectifier configurations. |
| 2 | Anode | Connected to lower-potential node (e.g., ground or output capacitor negative); unmarked terminal; carries return current path. |
Key Features
| Feature | Design Value |
|---|---|
| Low forward voltage | 0.42 V max at 300 mA - reduces conduction loss by ~30% vs. comparable PN diodes, improving light-load efficiency. |
| Ultra-compact UFP package | 1.5 × 0.8 mm footprint - fits within tight spacing constraints of wearable and IoT power modules. |
| High surge tolerance | 1 A IFSM (10 ms sine) - withstands inrush and transient overcurrent without degradation in point-of-load regulators. |
| Low thermal resistance substrate | 600 °C/W on polyimide board - enables direct thermal coupling to copper pour for passive cooling in fanless designs. |
Applications
| USB Power Delivery Adapter | Wireless Charging Receiver |
|---|---|
Use Scenario: Rectifying high-frequency AC from resonant LLC stage into regulated 5–20 V DC output. IC Role / Device Role / Timing Role: Freewheeling diode in secondary-side synchronous rectification circuit. Use Value: 0.42 V VF minimizes heat generation in sealed adapter enclosures where airflow is restricted. |
Use Scenario: Converting induced AC from Qi-compatible receiver coil into stable DC for battery charging IC. IC Role / Device Role / Timing Role: Input rectifier feeding linear or switching charger controller. Use Value: Sub-2 mm² UFP footprint allows integration directly adjacent to coil without compromising EMI shielding layout. |
| Portable Medical Sensor Node | Industrial IoT Edge Controller |
Use Scenario: Supplying regulated 3.3 V from coin-cell or energy-harvesting source with ultra-low quiescent current. IC Role / Device Role / Timing Role: Output rectifier in boost converter powering ultra-low-power MCU and sensor interface. Use Value: 200 µA IR at 30 V ensures minimal self-discharge during multi-week sleep cycles between sensor readings. |
Use Scenario: Providing auxiliary 5 V rail from 12–24 V field bus for isolated communication interfaces (RS-485, CAN transceivers). IC Role / Device Role / Timing Role: Input-stage rectifier in wide-input buck converter front-end. Use Value: 30 V VRRM safely handles 24 V nominal bus transients up to ±30 % without clamping or failure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| RB050M-40 | Higher VF (0.47 V max @ 300 mA), same 30 V VRRM, SOD-523 package (1.6 × 0.8 mm). | Slightly larger footprint; marginally higher conduction loss in thermally constrained spaces. | Acceptable where 50 mV VF increase is tolerable and SOD-523 land pattern is already established. |
| SS12 | Higher IF (1 A), higher VF (0.5 V typ), DO-214AC package (4.5 × 2.7 mm), 2x footprint size. | Not suitable for ultra-dense layouts; better for higher-current, less space-constrained designs. | Preferred when average current exceeds 0.3 A or when thermal mass from larger package improves reliability under surge. |
Compared with RB050M-40 and SS12, the RKR0303AKJ#R6 delivers the lowest VF in the smallest footprint among 30 V Schottky rectifiers, making it optimal for miniaturized, efficiency-critical 0.3 A applications where board area is at premium.
Availability
RKR0303AKJ#R6 is available at Aetrix Electronics and suitable for USB PD adapters, wireless charging receivers, and portable medical sensor nodes requiring stable component supply and consistent UFP packaging across production batches.
Supply support for RKR0303AKJ#R6 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
Renesas Electronics is a global semiconductor leader delivering microcontrollers, analog, power, and connectivity solutions for automotive, industrial, and consumer applications.
The RKR0303AKJ#R6 belongs to Renesas' silicon Schottky rectifier product line, engineered specifically for high-efficiency, space-constrained DC/DC conversion in portable and battery-powered systems.
FAQ
What is the maximum junction temperature for the RKR0303AKJ#R6?
The RKR0303AKJ#R6 has a maximum junction temperature (Tj) rating of 125°C. This limit must be respected under all operating conditions, including worst-case ambient temperature and power dissipation. Derating curves in Figure 6 of the datasheet show allowable average rectified current versus ambient temperature, confirming that at 75°C ambient, the RKR0303AKJ#R6 supports full 0.3 A only with adequate board-level thermal design.
Is the RKR0303AKJ#R6 RoHS compliant?
Yes, the RKR0303AKJ#R6 is RoHS compliant per EU Directive 2011/65/EU. Renesas confirms compliance in its environmental documentation and product change notices. The device contains no lead, mercury, cadmium, hexavalent chromium, PBB, or PBDE above threshold limits, and is suitable for use in consumer and industrial equipment sold in regulated markets.
Can the RKR0303AKJ#R6 be used in place of a standard PN junction diode?
Yes, the RKR0303AKJ#R6 can replace PN diodes in low-voltage, low-current rectification roles - but only where its 30 V VRRM and 0.3 A IF ratings meet system requirements. Its Schottky construction eliminates reverse recovery time, reducing switching noise and EMI, but its higher reverse leakage (vs. PN) may affect ultra-low-power sleep modes. System validation is required before substitution.
What does the "#R6" suffix indicate in RKR0303AKJ#R6?
The "#R6" suffix denotes tape-and-reel packaging with 8,000 pieces per reel (ordering code "R" per the datasheet's Ordering Information table). It corresponds to JEDEC-compliant taping per PWSF0002ZA-A specification and is distinct from the "#P6" variant (4,000 pcs/reel). Both share identical electrical and mechanical specifications.
Does the RKR0303AKJ#R6 require special PCB layout considerations?
Yes - due to its UFP package, the RKR0303AKJ#R6 requires precise pad geometry matching Renesas' recommended land pattern (based on SC-79). Also, the datasheet notes that lead tips are exposed as cutting planes and solderability is not guaranteed; therefore, solder paste volume, reflow profile, and post-reflow inspection must be validated for each assembly process prior to high-volume production of RKR0303AKJ#R6.
RKR0303AKJ#R6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- SC-79, SOD-523
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 30 V
- Current - Average Rectified (Io):
- 300mA
- Voltage - Forward (Vf) (Max) @ If:
- 420 mV @ 300 mA
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 200 µA @ 30 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 2-UFP
- Operating Temperature - Junction:
- 125°C (Max)
RKR0303AKJ#R6 FAQ
1.How can I place an order for RKR0303AKJ#R6 through Aetrix?
Please submit a Request for Quotation (RFQ) for RKR0303AKJ#R6 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 RKR0303AKJ#R6 reliable?
The price and inventory of RKR0303AKJ#R6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RKR0303AKJ#R6 is usually 5 days.
3.What payment methods are accepted for RKR0303AKJ#R6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RKR0303AKJ#R6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RKR0303AKJ#R6?
RKR0303AKJ#R6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RKR0303AKJ#R6 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 RKR0303AKJ#R6?
For technical support, including RKR0303AKJ#R6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RKR0303AKJ#R6 requirements.
6.How does Aetrix verify that RKR0303AKJ#R6 is sourced from the original manufacturer or authorized distributors?
All RKR0303AKJ#R6 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 RKR0303AKJ#R6 meets industry standards.
7.What is the process for return or replacement of RKR0303AKJ#R6?
All RKR0303AKJ#R6 units undergo pre-shipment inspection (PSI). If there is an issue with RKR0303AKJ#R6, 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 RKR0303AKJ#R6 part is unused and in its original packaging.
Return procedure for RKR0303AKJ#R6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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