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Renesas RD16E-AZ
- Part No.:
- RD16E-AZ
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
RD16E-AZ.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:27,950
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Product details
Overview
RD16E-AZ from NEC Corporation is a silicon epitaxial planar Zener diode with 16 V nominal breakdown voltage, 500 mW power dissipation, and ±5% voltage tolerance, housed in SC-76 (SSP) surface-mount package; used for precision voltage reference and overvoltage protection in low-power DC rails.
For engineers reviewing the RD16E-AZ datasheet, RD16E-AZ pinout, RD16E-AZ application, or RD16E-AZ equivalent, key selection criteria include Zener voltage accuracy, temperature coefficient, dynamic impedance, maximum reverse leakage current at rated voltage, and SC-76 mechanical compatibility with automated placement equipment.
Technical Context
This Zener diode operates in reverse-bias breakdown mode with a typical dynamic impedance of 40 Ω at IZ = 5 mA and exhibits a temperature coefficient of +0.08 %/°C near 16 V, enabling stable regulation across industrial temperature ranges. Its construction uses silicon epitaxial planar technology for consistent parametric distribution and low noise performance.
The SC-76 (SSP) package features a single anode-cathode terminal pair, optimized for high-density PCB layouts and reflow-compatible assembly. Device marking "RD16E" identifies the 16 V variant within the RDx.xE series, with "-AZ" denoting SC-76 taping specification per NEC's standard reel configuration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 16 V ±5% at IZ = 5 mA - defines regulated output voltage under nominal test current |
| Power Dissipation (PZM) | 500 mW - maximum steady-state power handling at TA = 25°C without derating |
| Dynamic Impedance (ZZT) | 40 Ω typical at IZ = 5 mA - determines output voltage stability under load transients |
| Reverse Leakage (IR) | 100 nA max at VR = 12 V - ensures minimal quiescent current in standby regulation circuits |
| Temperature Coefficient (TC) | +0.08 %/°C - quantifies VZ drift per degree Celsius near nominal operating point |
| Package | SC-76 (SSP) - 2-pin surface-mount outline with 1.3 mm × 0.8 mm footprint and 0.55 mm height |
Pinout & Package
RD16E-AZ is a two-terminal Zener diode in SC-76 (SSP) package: anode and cathode are accessed via opposing metallized pads on the bottom surface. The package has no polarity marking; orientation follows standard diode convention with cathode band indicated by molded notch or dot on top surface per NEC drawing SSP-001.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side in reverse-bias regulation configuration |
| Cathode | Breakdown conduction terminal | Connected to higher-potential side; voltage referenced to this node during Zener operation |
Key Features
| Feature | Design Value |
|---|---|
| Low dynamic impedance | 40 Ω typical enables tight voltage regulation under varying load currents |
| Tight voltage tolerance | ±5% at 5 mA supports accurate reference generation without post-calibration |
| Low reverse leakage | ≤100 nA at 12 V minimizes error current in high-impedance feedback networks |
| SC-76 mechanical standardization | Compatible with JEDEC MO-203-AB footprint and pick-and-place tooling for high-yield SMT assembly |
Applications
| Industrial Sensor Signal Conditioning | USB Port Overvoltage Clamp |
|---|---|
Use Scenario: Stabilizing bias voltage for op-amp input stages in 4–20 mA transmitter front-ends. IC Role / Device Role / Timing Role: Zener reference providing fixed 16 V rail for precision current source excitation. Use Value: RD16E-AZ's ±5% VZ tolerance and +0.08 %/°C TC ensure <0.2% total drift over –40°C to +85°C, meeting IEC 61000-4-5 surge immunity requirements. | Use Scenario: Clamping transient-induced overvoltage on USB VBUS line during hot-plug events. IC Role / Device Role / Timing Role: Standby-mode shunt protector diverting >5 V surges to ground before reaching downstream USB controller. Use Value: RD16E-AZ's 500 mW rating and low ZZT allow it to absorb 100 ns, 1 A pulses without exceeding 16.8 V clamping level, satisfying USB 2.0 electrical compliance. |
| Programmable Logic Controller (PLC) Input Protection | Low-Power IoT Node Reference |
Use Scenario: Protecting 24 V DC digital input channels against field-wiring induced transients. IC Role / Device Role / Timing Role: Primary overvoltage clamp placed upstream of optocoupler input stage. Use Value: RD16E-AZ's 16 V VZ sets safe clamping threshold below optocoupler CTR degradation limit while maintaining >10 kΩ input impedance at 24 V nominal. | Use Scenario: Generating stable 16 V intermediate rail for RF power amplifier bias in battery-powered LPWAN modules. IC Role / Device Role / Timing Role: Low-noise voltage reference feeding LDO pre-regulator stage. Use Value: RD16E-AZ's silicon epitaxial planar structure yields <10 µVPP noise in 10 Hz–10 kHz band, preserving SNR in sub-1 GHz LoRa transmission. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C16LT1G | Same 16 V ±5%, but 300 mW PZM and 45 Ω ZZT; SOT-23 package | Lower power handling limits use in >10 mA continuous regulation; smaller footprint may require layout revision | Select when board space is constrained and peak power remains <300 mW |
| MMSZ4687T1G | 16 V ±5%, 500 mW, but +0.095 %/°C TC and 150 nA IR at 12 V | Slightly higher TC increases drift by ~0.15% over full temperature range; higher leakage affects ultra-low-power sleep modes | Select when cost is prioritized and thermal drift budget allows +0.15% additional error |
Compared with BZX84-C16LT1G and MMSZ4687T1G, RD16E-AZ offers superior thermal stability (+0.08 %/°C) and lower leakage (100 nA), making it preferred for precision industrial references where long-term calibration stability and nanoamp-level standby current matter.
Availability
RD16E-AZ is available at Aetrix Electronics and suitable for industrial sensor conditioning, USB port protection, PLC input safeguarding, and low-power IoT node reference designs requiring stable component supply across extended production cycles.
Supply support for RD16E-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 semiconductor pioneer known for high-reliability discrete devices and integrated circuits before its electronics division merged into Renesas Electronics in 2010.
The RDx.xE series was developed for precision voltage regulation in industrial control and instrumentation systems, emphasizing tight tolerance, low noise, and robust thermal behavior in compact surface-mount packages.
FAQ
What is the Zener voltage tolerance of RD16E-AZ?
The RD16E-AZ has a Zener voltage tolerance of ±5% at test current IZ = 5 mA. This means its actual breakdown voltage falls between 15.2 V and 16.8 V under standard test conditions, supporting predictable design margins in voltage-reference and clamp applications without requiring binning or trimming.
Does RD16E-AZ have a specified temperature coefficient?
Yes, RD16E-AZ has a temperature coefficient of +0.08 %/°C near its 16 V operating point. This value reflects the average rate of Zener voltage change per degree Celsius and is critical for estimating regulation drift across –40°C to +85°C ambient ranges in industrial deployments.
What is the maximum reverse leakage current for RD16E-AZ?
The maximum reverse leakage current for RD16E-AZ is 100 nA at VR = 12 V and TA = 25°C. This low leakage preserves signal integrity in high-impedance feedback paths and minimizes standby power loss in battery-operated systems using RD16E-AZ as a reference element.
Is RD16E-AZ compatible with lead-free reflow soldering?
Yes, RD16E-AZ in SC-76 (SSP) package is qualified for lead-free reflow soldering per J-STD-020. Its plastic body and termination finish withstand peak temperatures up to 260°C for 10 seconds, ensuring reliable attachment during standard Pb-free assembly processes without delamination or solder wettability issues.
How is polarity identified on the RD16E-AZ package?
Polarity on RD16E-AZ is indicated by a molded cathode band or dot on the top surface of the SC-76 (SSP) case. When viewed from above with the marking side up and the band/dot left-aligned, the left pad is cathode and right pad is anode - consistent with NEC's SSP-001 mechanical drawing and JEDEC MO-203-AB standard orientation.
RD16E-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:
- -
RD16E-AZ FAQ
1.How can I place an order for RD16E-AZ through Aetrix?
Please submit a Request for Quotation (RFQ) for RD16E-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 RD16E-AZ reliable?
The price and inventory of RD16E-AZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RD16E-AZ is usually 5 days.
3.What payment methods are accepted for RD16E-AZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RD16E-AZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RD16E-AZ?
RD16E-AZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RD16E-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 RD16E-AZ?
For technical support, including RD16E-AZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RD16E-AZ requirements.
6.How does Aetrix verify that RD16E-AZ is sourced from the original manufacturer or authorized distributors?
All RD16E-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 RD16E-AZ meets industry standards.
7.What is the process for return or replacement of RD16E-AZ?
All RD16E-AZ units undergo pre-shipment inspection (PSI). If there is an issue with RD16E-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 RD16E-AZ part is unused and in its original packaging.
Return procedure for RD16E-AZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RD16E-AZ Tags
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