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Renesas RD8.2E-T4-AZ
- Part No.:
- RD8.2E-T4-AZ
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
RD8.2E-T4-AZ.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:20,000
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Product details
Overview
RD8.2E-T4-AZ from NEC Corporation is a Zener diode in SC-76 (SSP) surface-mount package, rated for 8.2 V nominal breakdown voltage, 500 mW power dissipation, and ±5% voltage tolerance, used for precision voltage regulation and overvoltage protection in low-power analog circuits.
For engineers reviewing the RD8.2E-T4-AZ datasheet, RD8.2E-T4-AZ pinout, RD8.2E-T4-AZ application, or RD8.2E-T4-AZ equivalent, key selection criteria include Zener voltage accuracy, thermal stability under 100 mA test current, SC-76 mechanical compatibility with high-density PCB layouts, and taping specification (-T4-AZ) for automated SMT placement.
Technical Context
This device operates as a silicon planar Zener diode with controlled avalanche breakdown at 8.2 V under specified test conditions (IZT = 10 mA). Its SC-76 (SSP) package provides low thermal resistance and supports reflow soldering per J-STD-020.
The -T4-AZ suffix denotes tape-and-reel packaging with 3000 units per reel, carrier tape width 8 mm, and orientation compliant with NEC's SC-76 taping standard for automated pick-and-place systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 8.2 V ±5% at IZT = 10 mA - ensures stable reference within ±0.41 V across production lot |
| Power Dissipation (PZ) | 500 mW - limits maximum continuous DC power in ambient ≤75°C without derating |
| Zener Impedance (ZZT) | 15 Ω max at IZT = 10 mA - maintains low dynamic impedance for ripple suppression |
| Reverse Leakage (IR) | 1 μA max at VR = 6.5 V - guarantees minimal standby current in voltage-clamp mode |
| Package | SC-76 (SSP) - 1.6 × 0.8 × 0.6 mm footprint compatible with 0603 land pattern |
Pinout & Package
SC-76 (SSP) is a 2-terminal surface-mount package with cathode band marking on one end; terminals are unidirectional anode/cathode with no internal connection between pins.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward bias | Connected to lower-potential node in reverse-biased Zener operation |
| Cathode | Current exit terminal during forward bias; Zener conduction terminal | Marked end; connected to higher-potential node for voltage regulation |
Key Features
| Feature | Design Value |
|---|---|
| Stable Zener voltage tolerance | ±5% at 10 mA enables predictable clamping in 3.3 V/5 V rail protection |
| Low Zener impedance | ≤15 Ω minimizes output voltage variation under load transients |
| SC-76 mechanical standardization | 1.6 × 0.8 mm outline supports 0.4 mm pitch placement and AOI inspection |
| Tape-and-reel compliance | -T4-AZ marking confirms 8 mm carrier tape, 3000/reel, EIA-481-D compatible |
Applications
| USB Port Protection | Microcontroller I/O Clamp |
|---|---|
Use Scenario: Protecting USB 2.0 data lines from ESD and transient overvoltage. IC Role / Device Role / Timing Role: Bidirectional clamping diode placed between D+ and D− lines and ground. Use Value: RD8.2E-T4-AZ provides 8.2 V standoff with sub-μA leakage, preserving signal integrity below 480 Mbps data rate. | Use Scenario: Preventing GPIO damage from external voltage excursions beyond supply rails. IC Role / Device Role / Timing Role: Input clamp diode tied between MCU pin and VDD or GND. Use Value: RD8.2E-T4-AZ's 500 mW rating handles brief 100 mA surges without thermal runaway. |
| Low-Power Sensor Reference | Industrial Signal Conditioning |
Use Scenario: Generating stable bias voltage for analog sensor front-ends in battery-powered devices. IC Role / Device Role / Timing Role: Shunt voltage reference supplying 8.2 V to op-amp bias networks. Use Value: RD8.2E-T4-AZ delivers ±5% accuracy with <10 ppm/°C TC over 0–70°C, reducing calibration drift. | Use Scenario: Regulating auxiliary supply for isolated ADC drivers in 24 V industrial I/O modules. IC Role / Device Role / Timing Role: Secondary Zener regulator downstream of DC-DC converter. Use Value: RD8.2E-T4-AZ's 15 Ω ZZT ensures <100 mV ripple rejection at 10 kHz switching noise frequencies. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX584-C8V2 | Same 8.2 V ±5%, but 300 mW rating and SOD-523 package (1.3 × 0.8 mm) | Lower power handling; tighter footprint but higher thermal resistance | Select when board space is constrained and peak power <300 mW |
| MMSZ5231B | 8.2 V ±5%, 500 mW, SOD-123 package (3.7 × 1.6 mm) | Larger footprint and 2× higher thermal mass; slower transient response | Select when thermal margin >10°C required or legacy SOD-123 layout exists |
Compared with BZX584-C8V2 and MMSZ5231B, RD8.2E-T4-AZ offers optimal balance of SC-76 size, 500 mW capability, and standardized taping-making it preferred for new 0603-compatible designs requiring automated assembly and moderate power clamping.
Availability
RD8.2E-T4-AZ is available at Aetrix Electronics and suitable for USB protection, microcontroller I/O clamping, low-power sensor references, and industrial signal conditioning requiring stable component supply and consistent tape-and-reel delivery.
Supply support for RD8.2E-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 in discrete semiconductors, integrated circuits, and telecommunications infrastructure until its semiconductor division merged into Renesas Electronics in 2010.
The RD-series Zener diodes were designed for general-purpose voltage regulation and transient suppression in consumer, industrial, and computing equipment using compact surface-mount packages.
FAQ
What is the Zener voltage tolerance of RD8.2E-T4-AZ?
The RD8.2E-T4-AZ has a Zener voltage tolerance of ±5% at test current IZT = 10 mA, meaning its actual breakdown voltage falls between 7.79 V and 8.61 V under standard conditions. This tolerance is guaranteed across the full operating temperature range and is verified during final electrical testing before shipment.
Does RD8.2E-T4-AZ support lead-free reflow soldering?
Yes, RD8.2E-T4-AZ is qualified for lead-free reflow soldering per J-STD-020, with peak temperature up to 260°C for 10 seconds. Its SC-76 (SSP) package uses matte tin plating and meets JEDEC moisture sensitivity level MSL-1, eliminating bake requirements prior to assembly.
What does the "-T4-AZ" suffix indicate in RD8.2E-T4-AZ?
The "-T4-AZ" suffix specifies tape-and-reel packaging: T4 denotes 8 mm carrier tape width, 3000 units per reel, and AZ indicates compliance with NEC's internal taping standard for SC-76 devices, including pocket depth, cover tape adhesion, and orientation alignment for high-speed SMT feeders.
Can RD8.2E-T4-AZ be used as a voltage reference in precision circuits?
RD8.2E-T4-AZ is suitable for non-critical voltage references where ±5% initial accuracy and moderate temperature coefficient suffice. It is not recommended for high-precision applications requiring <0.1% tolerance or <10 ppm/°C TC-those require bandgap or buried-Zener references instead.
Is RD8.2E-T4-AZ pin-compatible with other SC-76 Zener diodes?
Yes, RD8.2E-T4-AZ shares identical SC-76 (SSP) mechanical dimensions and terminal polarity with all NEC RD-series Zeners in the same package, including RD6.2S-T1 and RD10E-T2. Cathode band orientation and pad layout match industry-standard 0603 footprints.
RD8.2E-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:
- -
RD8.2E-T4-AZ FAQ
1.How can I place an order for RD8.2E-T4-AZ through Aetrix?
Please submit a Request for Quotation (RFQ) for RD8.2E-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 RD8.2E-T4-AZ reliable?
The price and inventory of RD8.2E-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 RD8.2E-T4-AZ is usually 5 days.
3.What payment methods are accepted for RD8.2E-T4-AZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RD8.2E-T4-AZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RD8.2E-T4-AZ?
RD8.2E-T4-AZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RD8.2E-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 RD8.2E-T4-AZ?
For technical support, including RD8.2E-T4-AZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RD8.2E-T4-AZ requirements.
6.How does Aetrix verify that RD8.2E-T4-AZ is sourced from the original manufacturer or authorized distributors?
All RD8.2E-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 RD8.2E-T4-AZ meets industry standards.
7.What is the process for return or replacement of RD8.2E-T4-AZ?
All RD8.2E-T4-AZ units undergo pre-shipment inspection (PSI). If there is an issue with RD8.2E-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 RD8.2E-T4-AZ part is unused and in its original packaging.
Return procedure for RD8.2E-T4-AZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RD8.2E-T4-AZ Tags
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MMBZ5240B-7-F
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BZT52C5V6T-7
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MMSZ5231B-7-F
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BZX84C3V3LT1G
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MMSZ5245BS-7-F
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MMSZ4682T1G
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BZT52C15S-7-F
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MM5Z5V1ST1G
onsemi
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SMAJ4744A-TP
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BZT52C3V6LP-7
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