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Renesas RD6.2ES-AZ
- Part No.:
- RD6.2ES-AZ
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
RD6.2ES-AZ.pdf
- Description:
- DIODE ZENER
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Inventory:7,210
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Product details
Overview
RD6.2ES-AZ from Excel Semiconductor is a DO-34 glass-sealed Zener diode designed for precision voltage regulation and transient suppression in low-power analog and protection circuits. It delivers a nominal zener voltage of 6.2 V (min 6.12 V, max 6.44 V) at 5 mA test current, with dynamic impedance ≤30 Ω, reverse current ≤5 μA at 3.0 V, and 400 mW power dissipation.
For engineers reviewing the RD6.2ES-AZ datasheet, RD6.2ES-AZ pinout, RD6.2ES-AZ application, or RD6.2ES-AZ equivalent, key selection considerations include its E24-standard zener tolerance, low knee impedance (≤500 Ω at 0.5 mA), surge reverse power rating of 100 W, and suitability for constant-voltage reference, waveform clipping, and surge absorption in space-constrained PCB layouts.
Technical Context
The RD6.2ES-AZ operates as a two-terminal silicon planar Zener diode optimized for stable reverse-breakdown behavior under DC and transient conditions. Its DO-34 glass package enables axial lead insertion at 5 mm pitch and supports junction temperatures up to 175 °C.
It is characterized at Tj = 25 °C with specified zener voltage (6.12–6.44 V), dynamic impedance (≤30 Ω @ 5 mA), knee impedance (≤500 Ω @ 0.5 mA), and reverse leakage (≤5 μA @ 3.0 V), meeting E24 standard voltage grading for consistent binning across production lots.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.12–6.44 V at IZ = 5 mA - ensures tight regulation within ±2.0% tolerance for reference stability |
| Dynamic Impedance (ZZT) | ≤30 Ω at IZ = 5 mA - minimizes output voltage variation under load current changes |
| Knee Dynamic Impedance (ZZK) | ≤500 Ω at IZ = 0.5 mA - maintains usable regulation even near breakdown threshold |
| Reverse Current (IR) | ≤5 μA at VR = 3.0 V - guarantees low standby leakage in battery-powered or high-impedance bias networks |
| Power Dissipation (PV) | 400 mW at TA = 25 °C - defines maximum continuous DC power handling on standard FR-4 PCB |
| Surge Reverse Power (PRSM) | 100 W - supports short-duration transient clamping (e.g., ESD or inductive kick) |
| Junction Temperature (Tj) | −65 to +175 °C - enables operation in extended industrial and automotive under-hood environments |
Pinout & Package
RD6.2ES-AZ uses a DO-34 glass axial-leaded package with cathode identified by a band. Leads are tinned copper-clad steel, compatible with wave and hand soldering per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / low-side connection in shunt regulator | Connected to circuit ground or lower potential node when used in voltage reference or clamp configuration |
| Cathode | Zener breakdown terminal / regulated output node | Provides stable 6.2 V reference relative to anode; marked with colored band for polarity identification |
Key Features
| Feature | Design Value |
|---|---|
| DO-34 glass sealed package | Enables 5 mm PCB pitch insertion and hermetic reliability for long-term voltage stability |
| Planar process construction | Ensures repeatable breakdown characteristics and low parameter drift over temperature and life |
| E24-standard zener voltage grading | Supports automated binning and interchangeability within 6.2 V nominal family without recalibration |
| Low knee impedance (≤500 Ω) | Allows effective regulation at microamp-level currents, critical for low-power sensor biasing |
| 100 W surge reverse power rating | Provides robust transient immunity without external TVS, reducing BOM count in input protection stages |
Applications
| Industrial Sensor Reference | Low-Power Microcontroller Reset Circuit |
|---|---|
Use Scenario: Providing stable 6.2 V reference for analog front-end signal conditioning in pressure or temperature transmitters. IC Role / Device Role / Timing Role: Shunt voltage reference establishing precise bias point for op-amp gain stages and ADC reference dividers. Use Value: Tight 6.12–6.44 V tolerance and ≤30 Ω dynamic impedance ensure <±0.5% reference drift over 0–70 °C ambient range. | Use Scenario: Generating clean reset threshold for 3.3 V microcontrollers during brown-out or power-up sequencing. IC Role / Device Role / Timing Role: Zener-based voltage detector feeding RC delay network into MCU reset pin. Use Value: Low 5 μA reverse leakage at 3.0 V prevents premature reset release; DO-34 footprint fits compact control board layouts. |
| Waveform Clipping in Audio Signal Path | Surge Absorption in RS-485 Transceiver Interface |
Use Scenario: Limiting peak amplitude of line-level audio signals to prevent amplifier saturation or DAC overload. IC Role / Device Role / Timing Role: Bidirectional clipping diode pair (with series resistor) using forward and reverse conduction thresholds. Use Value: Symmetrical 6.2 V reverse breakdown and ~0.7 V forward drop enable predictable ±6.9 V clipping envelope with minimal distortion. | Use Scenario: Protecting RS-485 bus lines against induced surges from nearby motor switching or lightning coupling. IC Role / Device Role / Timing Role: Shunt transient suppressor placed between A/B differential lines and ground. Use Value: 100 W surge rating handles 10/1000 μs transients up to ±30 V without degradation; DO-34 leads support manual rework if replacement needed. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4735A | Zener voltage 6.2 V (6.0–6.4 V), ZZT ≤5 Ω @ 41 mA, PV = 1 W, DO-41 package | Higher power rating but larger footprint; requires higher test current for spec compliance | Select when >400 mW continuous dissipation or higher surge margin is required; verify PCB pad compatibility |
| BZX55C6V2 | Zener voltage 6.2 V (5.8–6.6 V), ZZT ≤60 Ω @ 5 mA, PV = 500 mW, DO-35 package | Slightly wider voltage tolerance and higher dynamic impedance; smaller glass body than DO-34 | Choose where tighter board spacing is needed and ±6.5% VZ tolerance is acceptable |
Compared with 1N4735A and BZX55C6V2, RD6.2ES-AZ offers tighter E24 voltage binning, lower knee impedance, and DO-34 mechanical compatibility with legacy through-hole designs-making it optimal for cost-sensitive industrial controls requiring proven long-term stability.
Availability
RD6.2ES-AZ is available at Aetrix Electronics and suitable for industrial sensor reference, low-power microcontroller reset circuits, and RS-485 interface surge protection requiring stable component supply and long-lifecycle availability.
Supply support for RD6.2ES-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
Excel Semiconductor is a China-based analog semiconductor manufacturer specializing in discrete protection and reference devices, with design and production facilities in Suzhou.
The RD-series Zener diodes are engineered for high-reliability voltage regulation and transient suppression in industrial automation, instrumentation, and power supply feedback loops-emphasizing tight tolerance, thermal stability, and DO-34 mechanical interoperability.
FAQ
What is the zener voltage tolerance of RD6.2ES-AZ?
The RD6.2ES-AZ has a zener voltage range of 6.12 V to 6.44 V at 5 mA test current, corresponding to ±2.0% tolerance around the nominal 6.2 V value. This tight specification aligns with E24 standard grading and is verified per Rev. 3e datasheet page 2. The RD6.2ES-AZ achieves this consistency via planar process control and post-trim screening.
Does RD6.2ES-AZ support surge protection applications?
Yes, RD6.2ES-AZ supports surge protection with a rated surge reverse power (PRSM) of 100 W, validated per 10/1000 μs waveform per datasheet page 1. Its DO-34 glass package and low knee impedance allow it to clamp fast transients without thermal runaway. For sustained overvoltage, pairing RD6.2ES-AZ with a series current-limiting resistor remains essential.
What is the maximum junction temperature rating for RD6.2ES-AZ?
The RD6.2ES-AZ has a maximum junction temperature (Tj) rating of +175 °C, as specified in the Absolute Maximum Ratings table on datasheet page 1. This allows reliable operation in high-ambient environments such as industrial motor drives or enclosed power supplies, provided PCB thermal relief and power derating per Figure 6 are observed.
How does RD6.2ES-AZ compare to standard DO-41 Zener diodes in layout compatibility?
RD6.2ES-AZ uses the DO-34 package (29 mm length, 1.8 mm diameter, 5 mm lead pitch), which differs from DO-41's 2.1 mm diameter and 10 mm pitch. Therefore, RD6.2ES-AZ is not layout-compatible with DO-41 footprints. Its compact size suits dense PCBs, but direct substitution requires land pattern revision. Always verify mechanical fit before redesigning with RD6.2ES-AZ.
Is RD6.2ES-AZ suitable for low-current biasing applications?
Yes, RD6.2ES-AZ is well-suited for low-current biasing due to its specified knee dynamic impedance of ≤500 Ω at 0.5 mA and reverse current ≤5 μA at 3.0 V. These parameters enable stable regulation down to microampere-level currents, making RD6.2ES-AZ appropriate for sensor excitation, op-amp reference dividers, and ultra-low-power IoT node voltage references.
RD6.2ES-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:
- -
RD6.2ES-AZ FAQ
1.How can I place an order for RD6.2ES-AZ through Aetrix?
Please submit a Request for Quotation (RFQ) for RD6.2ES-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 RD6.2ES-AZ reliable?
The price and inventory of RD6.2ES-AZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RD6.2ES-AZ is usually 5 days.
3.What payment methods are accepted for RD6.2ES-AZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RD6.2ES-AZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RD6.2ES-AZ?
RD6.2ES-AZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RD6.2ES-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 RD6.2ES-AZ?
For technical support, including RD6.2ES-AZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RD6.2ES-AZ requirements.
6.How does Aetrix verify that RD6.2ES-AZ is sourced from the original manufacturer or authorized distributors?
All RD6.2ES-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 RD6.2ES-AZ meets industry standards.
7.What is the process for return or replacement of RD6.2ES-AZ?
All RD6.2ES-AZ units undergo pre-shipment inspection (PSI). If there is an issue with RD6.2ES-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 RD6.2ES-AZ part is unused and in its original packaging.
Return procedure for RD6.2ES-AZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RD6.2ES-AZ Tags
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