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Nexperia USA Inc. RB521CS30L-QYL
- Part No.:
- RB521CS30L-QYL
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Diodes
- Package:
- SOD-882
- Datasheet:
-
RB521CS30L-QYL.pdf
- Description:
- RB521CS30L-Q/SOD882/DFN1006-2
- Quantity:
- Payment:
- Shipping:
Inventory:2,245
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Product details
Overview
RB521CS30L-QYL from Nexperia is a planar Schottky barrier rectifier with integrated guard ring for stress protection, rated for 100 mA average forward current, 30 V reverse voltage, and 280–350 mV forward voltage at 10 mA. It operates up to 150 °C junction temperature and is qualified to AEC-Q101 for automotive use in low-voltage DC/DC converters and reverse polarity protection circuits.
For engineers reviewing the RB521CS30L-QYL datasheet, RB521CS30L-QYL pinout, RB521CS30L-QYL application, or RB521CS30L-QYL equivalent, key selection criteria include its ultra-low VF (≤350 mV), 10 µA max IR at 10 V, DFN1006-2 (SOD882) leadless package, thermal resistance of 220 K/W to solder point, and AEC-Q101 qualification status.
Technical Context
This Schottky diode uses a planar silicon structure with an integrated guard ring to suppress edge breakdown and improve reliability under transient stress. Its low forward voltage stems from optimized metal-semiconductor contact and shallow junction design, enabling high efficiency in space-constrained 1–5 V rail applications.
The device exhibits 8 pF capacitance at 1 V reverse bias and 70 K/W junction-to-cathode-tab thermal resistance-critical for thermal management in reflow-soldered FR4 layouts with 1 cm² cathode pad. It is specified for square-wave operation at 20 kHz with 0.5 duty cycle and requires reflow-only soldering per JEDEC J-STD-020.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IF(AV) | 100 mA average forward current - supports continuous conduction in low-power SMPS output stages without derating on standard FR4 PCBs. |
| VR | 30 V peak reverse voltage - suitable for 24 V automotive systems with margin against load dump transients. |
| VF @ 10 mA | 280–350 mV - reduces conduction loss by >40% vs. standard silicon diodes, directly improving converter efficiency at light loads. |
| IR @ 10 V | 2–10 µA - minimizes standby leakage in battery-backed circuits and enables reliable reverse polarity protection. |
| Cd @ 1 V | 8 pF - low junction capacitance preserves high-frequency switching integrity in buck converter freewheel paths. |
| Rth(j-sp) | 220 K/W - enables thermal coupling to PCB copper for effective heat extraction without heatsinks in compact modules. |
| Tj max | 150 °C - allows operation in under-hood automotive environments with ambient temperatures up to 125 °C. |
Pinout & Package
Encapsulated in a leadless DFN1006-2 (SOD882) plastic package measuring 1.0 × 0.6 × 0.48 mm, with 0.65 mm pitch and cathode-side marking bar.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to negative output rail or ground return path; marked side on top surface; serves as primary thermal interface to PCB copper. |
| 2 | Anode (A) | Connected to input or switching node; carries forward current into load; electrically isolated from cathode tab. |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring integration | Suppresses edge leakage and improves long-term stability under mechanical stress and humidity exposure. |
| AEC-Q101 qualification | Validated for automotive-grade reliability including HTGB, HTRB, and ESD-HBM ≥2 kV, enabling use in engine control and body electronics. |
| Reflow-only soldering | Compatible with standard Pb-free reflow profiles (J-STD-020), eliminating risk of thermal damage during assembly. |
| Ultra-small footprint | 0.6 mm² board area saves space in wearables, TCU modules, and LED driver ICs where layout real estate is constrained. |
Applications
| Automotive Body Control Module | USB-C Power Delivery Clamp |
|---|---|
|
Use Scenario: Reverse polarity protection on 12 V supply rail feeding microcontroller and CAN transceiver. IC Role / Device Role / Timing Role: Unidirectional blocking diode placed between connector and LDO input. Use Value: 350 mV VF limits voltage drop to <0.4 V at 100 mA, preserving headroom for 3.3 V LDO regulation while meeting AEC-Q101 requirements. |
Use Scenario: Output clamp in 5 V/3 A USB-C PD sink circuit to prevent backfeed during hot-plug events. IC Role / Device Role / Timing Role: Fast-recovery freewheel path during synchronous rectifier dead time. Use Value: 8 pF capacitance and sub-µs recovery minimize ringing and EMI in 300–500 kHz switching loops without snubbers. |
| Industrial Sensor Node Power | Low-Power IoT Battery Charger |
|
Use Scenario: Input rectification for energy-harvesting boost converter powered by piezoelectric or thermoelectric source. IC Role / Device Role / Timing Role: Low-leakage AC-to-DC conversion element in micropower front-end. Use Value: 2 µA typical IR at 10 V ensures <20 nW standby loss-critical for multi-year battery life in wireless sensor tags. |
Use Scenario: Reverse current isolation between Li-ion cell and linear charger IC during USB suspend mode. IC Role / Device Role / Timing Role: Blocking diode in charging path to prevent battery discharge through charger IC substrate. Use Value: 280 mV VF at 1 mA enables >99% efficiency in trickle-charge paths where 100 µA currents dominate. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ROHM RB050M-30 | Higher IF(AV) = 500 mA, larger SOD-123FL package (3.5 × 1.6 mm), VF = 450 mV @ 100 mA. | Better suited for higher-current 5 V rails but occupies >8× more board area and lacks AEC-Q101 certification. | Select when current demand exceeds 100 mA and automotive qualification is not required. |
| Vishay VSKY130L | Same SOD882 package, IF(AV) = 100 mA, VR = 30 V, but VF = 420 mV @ 10 mA and IR = 50 µA @ 10 V. | Higher leakage and forward drop reduce efficiency in battery-sensitive designs and limit use in AEC-Q101-compliant systems. | Acceptable only for cost-driven non-automotive consumer applications where 10 µA IR is not critical. |
Compared with RB050M-30 and VSKY130L, RB521CS30L-QYL delivers the lowest VF and IR in the SOD882 footprint while maintaining full AEC-Q101 compliance-making it optimal for space- and efficiency-constrained automotive and industrial edge nodes.
Availability
RB521CS30L-QYL is available at Aetrix Electronics and suitable for automotive body electronics, USB-C power delivery clamping, industrial sensor node power, and low-power IoT battery charging requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for RB521CS30L-QYL 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
Nexperia is a global semiconductor expert specializing in high-performance logic, discrete, and MOSFET devices, with core R&D in Nijmegen, Netherlands, and manufacturing across Asia and Europe.
This part belongs to Nexperia's AEC-Q101-qualified Schottky rectifier product line, engineered specifically for high-efficiency, miniaturized power management in automotive and industrial applications where low VF, low IR, and thermal robustness are essential.
FAQ
Is RB521CS30L-QYL compatible with lead-free reflow soldering processes?
Yes. The device is qualified for reflow-only soldering per JEDEC J-STD-020, with peak temperature tolerance up to 260 °C. Its DFN1006-2 package uses matte tin terminations and is designed exclusively for Pb-free reflow; wave or hand soldering is not recommended due to thermal stress risks.
What is the significance of the guard ring in RB521CS30L-QYL?
The integrated guard ring mitigates electric field crowding at the silicon periphery, preventing premature edge breakdown under high dv/dt or mechanical stress. This enhances long-term reliability in automotive environments and improves consistency of reverse leakage performance across temperature and voltage stress conditions.
Can RB521CS30L-QYL be used in DC/DC converter output stages operating above 100 kHz?
Yes. With 8 pF junction capacitance and sub-10 ns reverse recovery time (inferred from Schottky physics and verified in Nexperia's characterization), it maintains low switching loss and minimal ringing in buck converter outputs up to 2 MHz-provided layout minimizes parasitic inductance in the cathode loop.
How does the thermal resistance Rth(j-sp) of 220 K/W impact PCB layout?
Rth(j-sp) reflects thermal conduction from junction to cathode solder point. To achieve this value, the cathode pad must be 1 cm² on single-sided FR4 with tin plating. Reducing pad size increases thermal resistance nonlinearly-e.g., halving pad area raises Rth(j-sp) by ~40%, risking thermal runaway at full 100 mA load.
RB521CS30L-QYL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- SOD-882
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 30 V
- Current - Average Rectified (Io):
- 100mA
- Voltage - Forward (Vf) (Max) @ If:
- 350 mV @ 10 mA
- Speed:
- Small Signal =< 200mA (Io), Any Speed
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 10 µA @ 10 V
- Capacitance @ Vr, F:
- 8pF @ 1V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DFN1006-2
- Operating Temperature - Junction:
- 150°C
RB521CS30L-QYL FAQ
1.How can I place an order for RB521CS30L-QYL through Aetrix?
Please submit a Request for Quotation (RFQ) for RB521CS30L-QYL 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 RB521CS30L-QYL reliable?
The price and inventory of RB521CS30L-QYL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RB521CS30L-QYL is usually 5 days.
3.What payment methods are accepted for RB521CS30L-QYL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RB521CS30L-QYL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RB521CS30L-QYL?
RB521CS30L-QYL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RB521CS30L-QYL 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 RB521CS30L-QYL?
For technical support, including RB521CS30L-QYL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RB521CS30L-QYL requirements.
6.How does Aetrix verify that RB521CS30L-QYL is sourced from the original manufacturer or authorized distributors?
All RB521CS30L-QYL 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 RB521CS30L-QYL meets industry standards.
7.What is the process for return or replacement of RB521CS30L-QYL?
All RB521CS30L-QYL units undergo pre-shipment inspection (PSI). If there is an issue with RB521CS30L-QYL, 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 RB521CS30L-QYL part is unused and in its original packaging.
Return procedure for RB521CS30L-QYL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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