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Renesas RKR0303AKJ#P1
- Part No.:
- RKR0303AKJ#P1
- Manufacturer:
- Renesas
- Category:
- Single Diodes
- Package:
- -
- Datasheet:
-
RKR0303AKJ#P1.pdf
- Description:
- RECTIFIER DIODE, SCHOTTKY
- Quantity:
- Payment:
- Shipping:
Inventory:188,000
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Product details
Overview
RKR0303AKJ#P1 from Renesas Electronics is a silicon Schottky barrier diode designed for low-loss rectification in space-constrained DC/DC converters and power management circuits, featuring 30 V repetitive peak reverse voltage (VRRM), 0.3 A forward current rating (IF), and ultra-low 0.42 V forward voltage drop at 300 mA - enabling high-efficiency operation in portable and battery-powered systems.
For engineers reviewing the RKR0303AKJ#P1 datasheet, RKR0303AKJ#P1 pinout, RKR0303AKJ#P1 application, or RKR0303AKJ#P1 equivalent, key selection criteria include its UFP (Ultra small Flat Lead) package footprint, thermal resistance of 600°C/W on polyimide board, cathode-anode polarity marking, and suitability for compact surface-mount designs requiring low VF and fast switching.
Technical Context
The RKR0303AKJ#P1 operates as a unidirectional rectifier with Schottky junction physics, delivering low conduction loss and negligible reverse recovery charge - critical for high-frequency switching topologies like buck converters and synchronous rectifier auxiliary paths. Its 30 V VRRM and 1 A non-repetitive surge rating (IFSM) support transient-tolerant operation in 5–24 V input rails.
Thermal performance is defined by junction-to-ambient resistance (Rth(j-a) = 600°C/W) on a polyimide test board, limiting continuous dissipation to ~0.3 W at Ta = 25°C. Reverse leakage remains ≤200 µA at full rated VR = 30 V, ensuring stable blocking under bias in low-power standby circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 30 V - Maximum repetitive reverse voltage before breakdown; sets upper limit for input/output rail isolation in 24 V systems. |
| VF @ IF = 300 mA | 0.42 V max - Enables <130 mW conduction loss per diode at 300 mA, reducing heat generation in dense layouts. |
| IR @ VR = 30 V | 200 µA max - Low leakage preserves efficiency in high-impedance bias networks and low-quiescent-current regulators. |
| IF (continuous) | 0.3 A - Rated average forward current; derates to zero at 125°C junction temperature per Fig.6. |
| Rth(j-a) | 600 °C/W - Thermal resistance on polyimide board; defines temperature rise per watt dissipated in standard SMT layout. |
| Package | UFP (SC-79) - 1.5 × 0.8 × 0.8 mm footprint; enables placement in <2.0 mm² PCB area with 0.65 mm lead pitch. |
Pinout & Package
Package: Ultra small Flat Lead (UFP), JEITA code SC-79, Renesas code C6 - 2-terminal surface-mount device with exposed lead tips (non-solderable per note), cathode marked on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode | Connected to higher-potential node during conduction; marked side of package; carries return current path in rectifier configuration. |
| 2 | Anode | Connected to lower-potential node; accepts forward-biased current flow; referenced to ground or negative rail in typical buck output stage. |
Key Features
| Feature | Design Value |
|---|---|
| Low forward voltage | VF ≤ 0.42 V at 300 mA - Reduces power loss by >40% vs. comparable 1N5819-style Schottkys in same current range. |
| Ultra-compact UFP package | 1.5 × 0.8 × 0.8 mm - Fits within 2.0 mm² PCB area, supporting >1000 components/in² board density in wearables and IoT sensors. |
| High surge tolerance | IFSM = 1 A (10 ms sine) - Withstands inrush and load-dump transients in automotive body electronics and industrial 24 V supplies. |
| Wide operating temperature | Tj = –55°C to +125°C - Validated for use in extended-temperature environments including outdoor gateways and motor control enclosures. |
Applications
| Battery Charger Output Stage | USB Power Delivery Rectification |
|---|---|
Use Scenario: Isolating secondary-side output in single-cell Li-ion linear charger ICs with integrated pass FET. IC Role / Device Role / Timing Role: Output rectifier preventing reverse current flow during charger shutdown or battery removal. Use Value: 0.42 V VF minimizes voltage drop across diode, preserving ≥4.1 V at battery terminal under 300 mA charge current. |
Use Scenario: OR-ing diode in dual-input USB PD 3.0 power path managing Type-C and legacy adapter inputs. IC Role / Device Role / Timing Role: Unidirectional current gate enabling seamless source selection without backfeed. Use Value: 200 µA IR at 30 V ensures <1 µW standby leakage, meeting USB PD v3.0 low-power idle requirements. |
| DC/DC Converter Freewheeling Diode | Low-Power Sensor Node Supply Rail |
Use Scenario: Freewheeling path in 1 MHz buck converter powering FPGA I/O banks or RF transceivers. IC Role / Device Role / Timing Role: Fast-recovery freewheeling diode replacing synchronous MOSFET where gate drive complexity is prohibitive. Use Value: Near-zero Qrr eliminates switching loss spikes and EMI during diode turn-off, stabilizing 12 V → 3.3 V conversion. |
Use Scenario: Reverse-polarity protection and supply decoupling in coin-cell–powered environmental sensors. IC Role / Device Role / Timing Role: Input protection diode placed between battery holder and LDO input. Use Value: 0.3 A IF rating supports peak 200 mA sensor burst mode while maintaining <0.5°C self-heating on FR4. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| RBR0303AKJ#P1 | Same UFP package, identical pinout, but rated for 100 µA IR max at VR = 30 V (vs. 200 µA for RKR0303AKJ#P1); otherwise identical VRRM, VF, and IF. | Preferred where tighter leakage spec is required - e.g., energy-harvesting circuits with nanoampere quiescent budgets. | Select RBR0303AKJ#P1 only if design requires sub-100 µA reverse leakage; otherwise RKR0303AKJ#P1 offers broader margin at same cost. |
| RB050M-30 | TO-236 (SOT-23) package, 30 V VRRM, 0.5 A IF, VF = 0.45 V @ 500 mA - larger footprint (2.9 × 1.3 mm), higher thermal resistance (~400°C/W). | Suitable for higher-current or less space-constrained boards; not interchangeable due to different package and pin pitch. | Choose RB050M-30 only when >0.3 A continuous current or legacy SOT-23 compatibility is required; not a drop-in replacement. |
Compared with RBR0303AKJ#P1, the RKR0303AKJ#P1 trades slightly higher leakage for broader process margin and identical form factor; versus RB050M-30, it delivers 45% smaller PCB area and better thermal performance per unit volume despite lower current rating.
Availability
RKR0303AKJ#P1 is available at Aetrix Electronics and suitable for battery-powered wearables, USB-C peripheral power management, and compact DC/DC converters requiring stable component supply, consistent parametric performance, and RoHS-compliant packaging.
Supply support for RKR0303AKJ#P1 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 specializing in microcontrollers, analog, power, and timing solutions for industrial, automotive, and consumer applications.
The RKR0303AKJ#P1 belongs to Renesas' UFP-packaged Schottky diode family, engineered specifically for ultra-compact, high-efficiency rectification in portable and space-limited power systems.
FAQ
What is the maximum junction temperature rating for the RKR0303AKJ#P1?
The RKR0303AKJ#P1 has a maximum junction temperature (Tj) rating of +125°C, as specified in its Absolute Maximum Ratings table. This limit applies under steady-state conditions with proper thermal management. Operation beyond this temperature risks permanent degradation of the Schottky junction. Derating curves in Figure 6 show that average rectified current drops to zero at 125°C ambient when using the standard polyimide test board - confirming thermal design must maintain Tj ≤ 125°C for reliable RKR0303AKJ#P1 operation.
Is the RKR0303AKJ#P1 RoHS compliant and halogen-free?
Yes, the RKR0303AKJ#P1 meets RoHS Directive 2011/65/EU requirements and is halogen-free per Renesas' material declarations. The device uses lead-free solderable terminations and complies with JEDEC J-STD-609 Category 1 for moisture sensitivity (MSL 1). Full compliance documentation, including substance declarations and test reports, is available through Renesas' official product page and Aetrix Electronics' quality portal for the RKR0303AKJ#P1.
Can the RKR0303AKJ#P1 be used in automotive applications?
The RKR0303AKJ#P1 is classified as a "Standard" quality grade device per Renesas' quality policy, intended for computers, office equipment, and consumer electronics - not for automotive safety-critical or engine-compartment applications. It lacks AEC-Q200 qualification and is not rated for under-hood temperature cycling or vibration stress. For automotive body electronics (e.g., infotainment USB ports), system-level validation is required; Renesas does not guarantee RKR0303AKJ#P1 performance in automotive environments without additional qualification testing.
What is the thermal resistance of the RKR0303AKJ#P1 on a standard FR-4 PCB?
The published Rth(j-a) = 600°C/W for the RKR0303AKJ#P1 is measured on a polyimide board per JEDEC standards - not FR-4. On standard 1-oz FR-4 with minimal copper pour, actual thermal resistance will be higher (typically 700–900°C/W), reducing safe operating current. For accurate thermal modeling of the RKR0303AKJ#P1 on FR-4, use Renesas' thermal simulation guidelines or perform board-specific characterization; do not assume the 600°C/W value applies directly to FR-4 layouts.
Does the RKR0303AKJ#P1 have a specified reverse recovery time (trr)?
No - the RKR0303AKJ#P1 is a Schottky barrier diode and therefore exhibits no minority-carrier storage delay; its reverse recovery is effectively instantaneous (<1 ns) and not characterized in the datasheet. Unlike PN-junction rectifiers, the RKR0303AKJ#P1 avoids reverse recovery losses entirely, making it ideal for high-frequency switching applications. This behavior is inherent to Schottky physics and confirmed by the absence of trr specification and Qrr data in all RKR0303AKJ#P1 documentation.
RKR0303AKJ#P1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Technology:
- -
- Voltage - DC Reverse (Vr) (Max):
- -
- Current - Average Rectified (Io):
- -
- Voltage - Forward (Vf) (Max) @ If:
- -
- Speed:
- -
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- -
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
- Operating Temperature - Junction:
- -
RKR0303AKJ#P1 FAQ
1.How can I place an order for RKR0303AKJ#P1 through Aetrix?
Please submit a Request for Quotation (RFQ) for RKR0303AKJ#P1 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#P1 reliable?
The price and inventory of RKR0303AKJ#P1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RKR0303AKJ#P1 is usually 5 days.
3.What payment methods are accepted for RKR0303AKJ#P1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RKR0303AKJ#P1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RKR0303AKJ#P1?
RKR0303AKJ#P1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RKR0303AKJ#P1 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#P1?
For technical support, including RKR0303AKJ#P1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RKR0303AKJ#P1 requirements.
6.How does Aetrix verify that RKR0303AKJ#P1 is sourced from the original manufacturer or authorized distributors?
All RKR0303AKJ#P1 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#P1 meets industry standards.
7.What is the process for return or replacement of RKR0303AKJ#P1?
All RKR0303AKJ#P1 units undergo pre-shipment inspection (PSI). If there is an issue with RKR0303AKJ#P1, 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#P1 part is unused and in its original packaging.
Return procedure for RKR0303AKJ#P1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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