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Renesas RD3.6ES-AZ
- Part No.:
- RD3.6ES-AZ
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
RD3.6ES-AZ.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:5,700
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Product details
Overview
RD3.6ES-AZ from Excel Semiconductor is a DO-34 glass-sealed Zener diode with nominal zener voltage 3.6 V, dynamic impedance ≤120 Ω at 5 mA, knee impedance ≤1100 Ω at 5 mA, and reverse current ≤10 μA at 1.0 V. It operates as a precision voltage reference in low-power regulation and waveform clipping circuits.
For engineers reviewing the RD3.6ES-AZ datasheet, RD3.6ES-AZ pinout, RD3.6ES-AZ application, or RD3.6ES-AZ equivalent, key selection criteria include its E24-standardized 3.6 V zener tolerance (±3.3%), DO-34 package compatibility with 5 mm pitch PCB insertion, and 400 mW steady-state power dissipation capability.
Technical Context
The RD3.6ES-AZ uses planar process technology to achieve stable breakdown characteristics and low temperature coefficient. Its zener voltage is specified at 5 mA test current with ±3.3% tolerance across the E24 series, and it supports surge reverse power up to 100 W for transient suppression.
Designed for operation within −65 °C to +175 °C storage range and maximum junction temperature of 175 °C, the device maintains reliable regulation under thermal stress while delivering consistent clamping behavior in constant-voltage and overvoltage protection functions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 3.60–3.84 V at 5 mA - defines precise DC reference level for low-voltage regulation |
| Dynamic Impedance (Zzt) | ≤120 Ω at 5 mA - ensures minimal output voltage variation under load changes |
| Knee Dynamic Impedance (Zzk) | ≤1100 Ω at 5 mA - indicates sharpness of breakdown onset for accurate threshold detection |
| Reverse Current (IR) | ≤10 μA at 1.0 V - guarantees low leakage in standby or high-impedance bias networks |
| Power Dissipation (PV) | 400 mW - sets maximum continuous DC power handling on standard PCB layouts |
| Surge Reverse Power (PRSM) | 100 W - enables short-duration transient absorption without failure |
| Junction Temperature (Tj) | 175 °C - allows operation in high-ambient industrial environments |
Pinout & Package
DO-34 glass-sealed axial package with cathode band marking; leads are unmarked anode and banded cathode terminals. Designed for through-hole mounting with 5 mm pitch compatibility.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential node in reverse-biased Zener configuration |
| Cathode | Zener breakdown terminal | Banded end; connected to higher-potential node to enable regulated voltage drop |
Key Features
| Feature | Design Value |
|---|---|
| E24-standardized zener voltage | 3.6 V nominal with ±3.3% tolerance - simplifies BOM standardization across voltage grades |
| DO-34 glass package | Hermetically sealed, axial lead, 29 mm length - supports automated insertion and high-reliability long-term stability |
| Planar process construction | Uniform junction geometry - delivers repeatable breakdown voltage and low parameter drift |
| Low knee impedance | ≤1100 Ω at 5 mA - improves accuracy in low-current reference and sensing applications |
Applications
| USB Port Overvoltage Protection | Microcontroller Reset Circuit |
|---|---|
Use Scenario: Clamping 5 V USB supply rail against ESD or hot-swap transients. IC Role / Device Role / Timing Role: Zener clamp placed between VBUS and GND to limit voltage excursion. Use Value: RD3.6ES-AZ's 100 W surge rating and 10 μA leakage at 1.0 V prevent false triggering while absorbing fast transients. | Use Scenario: Generating clean reset threshold for 3.3 V microcontrollers. IC Role / Device Role / Timing Role: Zener-based voltage divider feeding RC network to reset pin. Use Value: Tight 3.6 V tolerance and low Zzk ensure predictable reset assertion across temperature and supply variance. |
| Low-Power Sensor Biasing | Waveform Clipping in Audio Preamp |
Use Scenario: Providing stable bias voltage for analog sensor signal conditioning. IC Role / Device Role / Timing Role: Shunt regulator supplying reference to op-amp input stage. Use Value: 400 mW power rating and 120 Ω Zzt maintain regulation accuracy under varying sensor loading. | Use Scenario: Limiting peak amplitude in line-level audio signal path. IC Role / Device Role / Timing Role: Back-to-back Zener pair (with complementary unit) acting as symmetrical clipper. Use Value: Sharp knee and low leakage preserve signal integrity below clipping threshold while limiting distortion above it. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4728A | Zener voltage 3.3 V ±5%, Zzt ≤10 Ω at 76 mA, DO-41 package | Higher test current, tighter Zzt, but larger footprint and different thermal profile | Prefer when higher power handling and lower impedance are required; verify PCB pad compatibility |
| BZX55-C3V6 | Zener voltage 3.6 V ±5%, Zzt ≤90 Ω at 5 mA, DO-35 package | Same voltage grade but smaller DO-35 case, lower surge rating (40 W), and higher leakage (50 μA) | Choose for space-constrained designs where 100 W surge immunity is not critical |
Compared with RD3.6ES-AZ, 1N4728A offers lower dynamic impedance but requires higher bias current and board area, while BZX55-C3V6 saves space but sacrifices surge robustness and leakage performance-making RD3.6ES-AZ optimal for industrial-grade 5 mm pitch PCBs needing reliable 100 W transient suppression.
Availability
RD3.6ES-AZ is available at Aetrix Electronics and suitable for USB protection circuits, microcontroller reset networks, low-power sensor biasing, and audio waveform clipping applications requiring stable component supply and long-lifecycle support.
Supply support for RD3.6ES-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 semiconductor manufacturer specializing in discrete devices including Zener diodes, rectifiers, and TVS components for industrial and consumer electronics.
The RD2.0ES–RD39ES series was designed to deliver E24-standardized, glass-sealed Zener diodes with high surge tolerance and tight voltage tolerance for cost-sensitive, high-reliability power management and protection functions.
FAQ
What is the exact zener voltage range for RD3.6ES-AZ?
The RD3.6ES-AZ has a guaranteed zener voltage range of 3.60 V to 3.84 V when measured at 5 mA test current and 25 °C junction temperature. This ±3.3% tolerance aligns with E24 resistor standardization, enabling predictable design margining in voltage reference and clamping applications using the RD3.6ES-AZ.
Is RD3.6ES-AZ compatible with automated PCB insertion equipment?
Yes, RD3.6ES-AZ uses the JEDEC DO-34 axial glass package with 29 mm body length and 5 mm lead pitch, explicitly optimized for standard automated insertion machines. Its mechanical dimensions and lead spacing match industry-standard feeders and placement nozzles, making RD3.6ES-AZ suitable for high-volume manufacturing without retooling.
What is the maximum reverse current specification for RD3.6ES-AZ at 1.0 V?
The RD3.6ES-AZ specifies a maximum reverse current of 10 μA at VR = 1.0 V and Tj = 25 °C. This low leakage ensures minimal power loss in high-impedance bias networks and prevents unintended activation in reset or protection circuits where RD3.6ES-AZ serves as a shunt element.
Can RD3.6ES-AZ be used in surge protection applications?
Yes, RD3.6ES-AZ supports up to 100 W surge reverse power (PRSM) in short-duration pulses, validated per JEDEC standards. Its glass-sealed DO-34 construction and planar junction enable robust transient energy absorption, making RD3.6ES-AZ appropriate for secondary-level surge suppression in low-voltage interfaces like USB or sensor inputs.
What is the thermal resistance characteristic of RD3.6ES-AZ?
RD3.6ES-AZ exhibits a thermal resistance (Rth) that varies inversely with PCB copper area-approximately 300 °C/W on minimal pads and down to ~150 °C/W with ≥25 mm² copper pour. This dependency is documented in Figure 7 of the datasheet, and proper heatsinking extends safe operation near its 175 °C max junction temperature limit.
RD3.6ES-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:
- -
RD3.6ES-AZ FAQ
1.How can I place an order for RD3.6ES-AZ through Aetrix?
Please submit a Request for Quotation (RFQ) for RD3.6ES-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 RD3.6ES-AZ reliable?
The price and inventory of RD3.6ES-AZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RD3.6ES-AZ is usually 5 days.
3.What payment methods are accepted for RD3.6ES-AZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RD3.6ES-AZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RD3.6ES-AZ?
RD3.6ES-AZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RD3.6ES-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 RD3.6ES-AZ?
For technical support, including RD3.6ES-AZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RD3.6ES-AZ requirements.
6.How does Aetrix verify that RD3.6ES-AZ is sourced from the original manufacturer or authorized distributors?
All RD3.6ES-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 RD3.6ES-AZ meets industry standards.
7.What is the process for return or replacement of RD3.6ES-AZ?
All RD3.6ES-AZ units undergo pre-shipment inspection (PSI). If there is an issue with RD3.6ES-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 RD3.6ES-AZ part is unused and in its original packaging.
Return procedure for RD3.6ES-AZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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