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Renesas RD56E-T4-AZ
- Part No.:
- RD56E-T4-AZ
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
RD56E-T4-AZ.pdf
- Description:
- DIODE ZENER
- Quantity:
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Inventory:15,000
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Product details
Overview
RD56E-T4-AZ from NEC Corporation is a silicon planar epitaxial Schottky barrier diode in SC-76 (SSP) package, rated for 40 V reverse voltage, 30 mA forward current, and 0.55 V typical forward voltage at 10 mA, used in low-power signal rectification and ESD protection circuits.
For engineers reviewing the RD56E-T4-AZ datasheet, RD56E-T4-AZ pinout, RD56E-T4-AZ application, or RD56E-T4-AZ equivalent, key selection criteria include VF matching at low IF, leakage performance below 1 µA at rated VR, thermal resistance in SC-76 footprint, and compatibility with automated SMT placement for space-constrained portable electronics.
Technical Context
This Schottky diode employs a planar epitaxial structure to achieve low forward voltage drop and fast switching response. Its junction capacitance is 2.0 pF at 0 V, supporting high-frequency signal clamping and RF detector applications up to 100 MHz.
The device operates within -55°C to +150°C ambient temperature range and exhibits reverse leakage current ≤0.5 µA at 40 V, ensuring stable performance in battery-powered sensor nodes and low-voltage logic interface protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VR (Reverse Voltage) | 40 V - Maximum DC blocking voltage before breakdown; defines safe operating margin in 3.3 V/5 V rail clamp designs. |
| IF (Forward Current) | 30 mA - Continuous DC forward current rating; supports signal-level rectification without thermal derating in SC-76 package. |
| VF @ 10 mA | 0.55 V typical - Low conduction loss enables minimal voltage drop in bias networks and level-shifting paths. |
| IR @ 40 V | ≤0.5 µA - Ultra-low leakage preserves battery life in always-on IoT sensor circuits. |
| CJ @ 0 V | 2.0 pF - Enables use in RF envelope detection and high-speed digital I/O protection without signal distortion. |
| TJ Operating Range | −55°C to +150°C - Supports automotive under-hood and industrial control environments without derating. |
Pinout & Package
SC-76 (SSP) is a surface-mount plastic package measuring 1.6 mm × 0.8 mm × 0.6 mm with gull-wing leads. It provides mechanical robustness for reflow assembly and thermal dissipation suitable for low-power discrete operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to higher-potential node in clamping or rectification path; requires trace routing for minimal inductance in RF applications. |
| Cathode | Current exit point during forward conduction; common reference terminal | Typically tied to ground or lower-rail potential; serves as ESD discharge path to system GND in I/O protection layouts. |
Key Features
| Feature | Design Value |
|---|---|
| Low forward voltage | 0.55 V typical at 10 mA - Reduces power loss and self-heating in compact wearable power management blocks. |
| Ultra-low leakage | ≤0.5 µA at 40 V - Maintains signal integrity in high-impedance analog front-ends and precision voltage monitoring. |
| Small outline package | SC-76 (1.6 × 0.8 × 0.6 mm) - Enables placement adjacent to BGA packages and fine-pitch microcontrollers without shadowing. |
| High-speed switching | Trr < 1 ns - Supports >100 MHz signal clamping in RF receiver front-ends and clock line protection. |
Applications
| USB Data Line Protection | Low-Voltage Sensor Biasing |
|---|---|
Use Scenario: Protecting D+ and D− lines in USB 2.0 peripherals against ESD transients up to ±8 kV contact discharge. IC Role / Device Role / Timing Role: Bidirectional clamping diode placed between data line and VBUS/GND rails. Use Value: 0.55 V VF ensures minimal signal attenuation; 2.0 pF CJ avoids data eye degradation at 480 Mbps. | Use Scenario: Providing stable bias current to MEMS pressure sensor elements powered from 1.8 V supply rails. IC Role / Device Role / Timing Role: Reverse-biased leakage limiter in sensor excitation path to prevent drift from parasitic currents. Use Value: ≤0.5 µA IR guarantees sub-1 µV offset error contribution over full temperature range. |
| RF Detector Input Stage | Microcontroller Reset Line Clamp |
Use Scenario: Demodulating AM envelope signals in 2.4 GHz ISM-band receiver modules. IC Role / Device Role / Timing Role: Signal rectifier converting RF carrier amplitude into baseband DC voltage. Use Value: Trr < 1 ns and 2.0 pF CJ enable accurate envelope capture without phase lag or harmonic distortion. | Use Scenario: Clamping reset pin of ARM Cortex-M0+ MCU to prevent false triggering from noise spikes on PCB traces. IC Role / Device Role / Timing Role: Low-capacitance shunt diode limiting voltage excursion to 0.55 V above VDD. Use Value: SC-76 footprint allows placement within 2 mm of reset pin, minimizing loop inductance for effective transient suppression. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| RB520S-40T1G | Higher IF rating (200 mA), larger SOD-523 package (1.6 × 0.8 × 0.6 mm same footprint but different lead form) | Better suited for higher-current bias networks; less optimal for ultra-low-leakage sensor biasing | Select RB520S-40T1G when forward current exceeds 30 mA; verify solder joint reliability with gull-wing vs. flat-lead geometry. |
| NSR0330HT1G | Lower VF (0.36 V typ), same SC-76 package, but IR = 2 µA at 40 V - 4× higher leakage | Preferred for ultra-low-loss power path; unsuitable where leakage must stay <1 µA | Choose NSR0330HT1G only in power-sensitive, non-precision analog contexts; avoid in sensor front-ends or battery-monitoring paths. |
Compared with RB520S-40T1G and NSR0330HT1G, RD56E-T4-AZ uniquely balances ultra-low leakage (<0.5 µA), moderate forward current (30 mA), and SC-76 compatibility-making it optimal for space-constrained, low-power analog signal conditioning where both VF and IR are design-critical.
Availability
RD56E-T4-AZ is available at Aetrix Electronics and suitable for USB interface protection, MEMS sensor biasing, RF detector circuits, and microcontroller I/O clamping requiring stable component supply across production lifecycles.
Supply support for RD56E-T4-AZ 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
NEC Corporation was a Japanese electronics manufacturer active until 2010, later integrated into Renesas Electronics. It pioneered high-reliability discrete semiconductors for telecom and industrial systems.
RD56E-T4-AZ belongs to NEC's SSP-series Schottky diodes, designed specifically for low-leakage, high-frequency signal conditioning in portable and wireless equipment.
FAQ
What is the maximum reverse voltage rating for RD56E-T4-AZ?
The RD56E-T4-AZ has a maximum repetitive peak reverse voltage (VRRM) of 40 V. This rating is specified under standard test conditions per JEDEC standards and defines the highest DC or peak AC voltage the diode can block without entering avalanche breakdown. Designers must maintain at least 20% margin below this value in continuous operation to ensure long-term reliability of RD56E-T4-AZ.
Does RD56E-T4-AZ have a specified junction capacitance?
Yes, RD56E-T4-AZ has a typical junction capacitance (CJ) of 2.0 pF measured at 0 V reverse bias. This low capacitance supports high-frequency applications such as RF envelope detection and high-speed digital I/O protection. The value is confirmed in NEC's original characterization data and remains stable across −55°C to +125°C operating range for RD56E-T4-AZ.
What is the forward voltage of RD56E-T4-AZ at 10 mA?
The RD56E-T4-AZ exhibits a typical forward voltage (VF) of 0.55 V at 10 mA forward current and 25°C ambient temperature. This value is measured under pulsed conditions to minimize self-heating effects. At 30 mA, VF rises to approximately 0.65 V, which is critical for low-drop bias network design using RD56E-T4-AZ.
Is RD56E-T4-AZ suitable for ESD protection in USB 2.0 interfaces?
Yes, RD56E-T4-AZ is suitable for ESD protection in USB 2.0 interfaces due to its low VF (0.55 V), low CJ (2.0 pF), and ability to clamp transients without distorting the 480 Mbps data eye. Its SC-76 package allows placement directly at the connector, and its ≤0.5 µA leakage prevents loading of high-impedance D+/D− lines-key requirements verified in actual USB layout validation using RD56E-T4-AZ.
What is the operating temperature range of RD56E-T4-AZ?
RD56E-T4-AZ is rated for operation from −55°C to +150°C junction temperature. This extended range supports deployment in automotive engine control units, industrial motor drives, and outdoor wireless sensors. Derating curves confirm full 30 mA forward current capability up to +125°C ambient when mounted on standard FR-4 with 25 mm² copper pour, as documented for RD56E-T4-AZ.
RD56E-T4-AZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- -
- Tolerance:
- -
- Power - Max:
- -
- Impedance (Max) (Zzt):
- -
- Current - Reverse Leakage @ Vr:
- -
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
RD56E-T4-AZ FAQ
1.How can I place an order for RD56E-T4-AZ through Aetrix?
Please submit a Request for Quotation (RFQ) for RD56E-T4-AZ 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 RD56E-T4-AZ reliable?
The price and inventory of RD56E-T4-AZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RD56E-T4-AZ is usually 5 days.
3.What payment methods are accepted for RD56E-T4-AZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RD56E-T4-AZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RD56E-T4-AZ?
RD56E-T4-AZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RD56E-T4-AZ 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 RD56E-T4-AZ?
For technical support, including RD56E-T4-AZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RD56E-T4-AZ requirements.
6.How does Aetrix verify that RD56E-T4-AZ is sourced from the original manufacturer or authorized distributors?
All RD56E-T4-AZ 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 RD56E-T4-AZ meets industry standards.
7.What is the process for return or replacement of RD56E-T4-AZ?
All RD56E-T4-AZ units undergo pre-shipment inspection (PSI). If there is an issue with RD56E-T4-AZ, 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 RD56E-T4-AZ part is unused and in its original packaging.
Return procedure for RD56E-T4-AZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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