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Renesas RD15ES-AZ
- Part No.:
- RD15ES-AZ
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
RD15ES-AZ.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:7,070
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Product details
Overview
RD15ES-AZ from Renesas Electronics is a 15 V ±5% zener diode in DO-34 glass package with DHD (Double Heatsink Diode) construction, rated for 400 mW steady-state power dissipation and 100 W non-repetitive surge reverse power (t = 10 µs), used for precision voltage regulation and transient suppression in low-power analog circuits.
For engineers reviewing the RD15ES-AZ datasheet, RD15ES-AZ pinout, RD15ES-AZ application, or RD15ES-AZ equivalent, this part serves as a stable 15 V reference in constant-voltage supplies, waveform clippers, and surge-absorbing protection stages where thermal robustness and tight zener voltage tolerance are required.
Technical Context
The RD15ES-AZ operates as a planar-processed silicon zener diode optimized for stable reverse-biased breakdown at 15 V nominal. Its DHD construction enhances thermal dissipation through dual heatsinking paths within the DO-34 glass envelope, enabling reliable operation up to 175°C junction temperature.
It exhibits a typical dynamic impedance of 25 Ω at IZ = 5 mA and knee impedance ≤110 Ω at IZK = 0.5 mA, with reverse leakage current ≤0.2 µA at VR = 11 V - characteristics validated per JEDEC DO-34 mechanical and electrical standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 13.48–15.02 V at IZ = 5 mA - defines precise regulation window for 15 V reference designs |
| Power Dissipation (P) | 400 mW at TA = 25°C - sets maximum continuous DC power handling on standard PCB layouts |
| Surge Reverse Power (PRSM) | 100 W for t = 10 µs - enables transient overvoltage clamping without failure |
| Junction Temperature (Tj) | 175°C maximum - supports operation in high-ambient industrial environments |
| Dynamic Impedance (ZZ) | 25 Ω max at IZ = 5 mA - ensures minimal output voltage variation under load changes |
| Reverse Leakage (IR) | ≤0.2 µA at VR = 11 V - guarantees low quiescent current in standby or battery-powered circuits |
Pinout & Package
RD15ES-AZ uses the standard DO-34 (JEDEC) axial glass package: 2.4 mm max body length, 5 mm lead pitch, black cathode band marking. Leads are tinned copper-clad steel with solderable finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / low-side connection in zener regulator | Connected to circuit ground or lower potential node during reverse-bias operation |
| Cathode | Zener breakdown terminal / regulated output node | Provides stable 15 V reference when reverse-biased; marked by black band on DO-34 body |
Key Features
| Feature | Design Value |
|---|---|
| DHD (Double Heatsink Diode) construction | Enables 400 mW power dissipation in compact DO-34 package via dual thermal paths to leads |
| Planar process technology | Delivers tight VZ tolerance (±5%) and repeatable dynamic impedance across production lots |
| E24-standard zener voltage grading | Ensures compatibility with industry-standard resistor and reference value systems |
| DO-34 glass sealed package | Supports automated insertion at 5 mm pitch and provides hermetic reliability for long-term stability |
Applications
| Low-Voltage Reference Supply | Waveform Clipping Circuit |
|---|---|
Use Scenario: Generating a stable 15 V bias for op-amp input stages or sensor excitation in industrial signal conditioning modules. IC Role / Device Role / Timing Role: Zener reference element providing fixed reverse-bias voltage node. Use Value: Maintains regulation accuracy within ±5% across temperature and load, minimizing drift in analog front-end performance. |
Use Scenario: Limiting AC signal amplitude to ±15 V in audio preamplifier input protection networks. IC Role / Device Role / Timing Role: Bidirectional clipping device (anode-to-ground, cathode-to-signal) defining peak voltage boundaries. Use Value: Prevents amplifier saturation using low-capacitance DO-34 structure with fast response to transient overloads. |
| Surge Absorption Node | Constant-Current Bias Generator |
Use Scenario: Protecting microcontroller I/O pins from ESD or inductive kickback in motor control interface boards. IC Role / Device Role / Timing Role: Transient voltage suppressor absorbing 100 W surges for 10 µs without degradation. Use Value: Extends system reliability by clamping transients below IC damage thresholds while maintaining low leakage (<0.2 µA). |
Use Scenario: Establishing a precise 15 V reference for setting emitter current in discrete BJT current sources. IC Role / Device Role / Timing Role: Voltage-setting element in series with ballast resistor to define IOUT = (VZ − VBE)/R. Use Value: Delivers <1% current error over temperature due to matched TC between VZ and VBE in common-emitter configurations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4744A | 14 V nominal, 1 W rating, DO-41 package, higher PD but larger footprint | Suitable for higher-power regulation where board space allows DO-41 | Select when >400 mW continuous dissipation is needed and DO-34 size constraint is relaxed |
| BZX55-C15 | 15 V nominal, 500 mW rating, DO-35 package, tighter VZ tolerance (±5%), same thermal profile | Drop-in replacement in space-constrained designs requiring identical electrical behavior | Prefer when sourcing legacy DO-35-compatible inventory or needing RoHS-compliant variant |
Compared with RD15ES-AZ, 1N4744A offers higher power capacity but requires PCB redesign for DO-41; BZX55-C15 matches VZ, tolerance, and thermal performance in a functionally equivalent DO-35 form factor - making it the closest direct alternative for footprint-sensitive upgrades.
Availability
RD15ES-AZ is available at Aetrix Electronics and suitable for low-power voltage reference, waveform clipping, and surge absorption applications requiring stable component supply and long-lifecycle support.
Supply support for RD15ES-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
Renesas Electronics Corporation is a global semiconductor leader delivering microcontrollers, analog, power, and SoC solutions for automotive, industrial, and consumer markets.
The RD15ES-AZ belongs to the RD2.0ES–RD39ES zener diode family designed for precision voltage regulation and transient protection in cost-sensitive, space-constrained industrial and communications equipment.
FAQ
What is the exact zener voltage range for RD15ES-AZ at 5 mA test current?
The RD15ES-AZ has a guaranteed zener voltage range of 13.48 V to 15.02 V when measured at IZ = 5 mA and TA = 25°C, per the official Renesas datasheet D13935EJ7V0DS. This ±5% tolerance ensures predictable regulation behavior in feedback and reference circuits where RD15ES-AZ is deployed.
Does RD15ES-AZ support surge protection, and what is its maximum non-repetitive pulse capability?
Yes, RD15ES-AZ is rated for 100 W non-repetitive surge reverse power at t = 10 µs, as confirmed in Figure 10 of the Renesas datasheet. This makes RD15ES-AZ suitable for absorbing short-duration transients such as ESD events or inductive switch-off spikes without parametric shift or failure.
What package type and marking does RD15ES-AZ use, and how is polarity identified?
RD15ES-AZ uses the JEDEC-standard DO-34 glass axial package with black cathode band marking on the body. The cathode terminal is the banded end, and the anode is the unmarked lead - consistent with industry-standard zener diode polarity identification used across RD2.0ES–RD39ES series parts.
What is the maximum junction temperature and storage temperature range for RD15ES-AZ?
RD15ES-AZ is rated for a maximum junction temperature (Tj) of 175°C and a storage temperature range (Tstg) of –65°C to +175°C. These ratings allow RD15ES-AZ to operate reliably in demanding industrial environments and survive reflow or wave soldering processes without degradation.
How does the DHD (Double Heatsink Diode) construction improve thermal performance of RD15ES-AZ?
The DHD construction in RD15ES-AZ provides two parallel thermal conduction paths from the silicon die to both axial leads, reducing effective thermal resistance and enabling 400 mW power dissipation in the compact DO-34 package. This design directly supports RD15ES-AZ's ability to sustain regulated operation under sustained load without thermal runaway.
RD15ES-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:
- -
RD15ES-AZ FAQ
1.How can I place an order for RD15ES-AZ through Aetrix?
Please submit a Request for Quotation (RFQ) for RD15ES-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 RD15ES-AZ reliable?
The price and inventory of RD15ES-AZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RD15ES-AZ is usually 5 days.
3.What payment methods are accepted for RD15ES-AZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RD15ES-AZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RD15ES-AZ?
RD15ES-AZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RD15ES-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 RD15ES-AZ?
For technical support, including RD15ES-AZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RD15ES-AZ requirements.
6.How does Aetrix verify that RD15ES-AZ is sourced from the original manufacturer or authorized distributors?
All RD15ES-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 RD15ES-AZ meets industry standards.
7.What is the process for return or replacement of RD15ES-AZ?
All RD15ES-AZ units undergo pre-shipment inspection (PSI). If there is an issue with RD15ES-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 RD15ES-AZ part is unused and in its original packaging.
Return procedure for RD15ES-AZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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