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Renesas RD15ES-T1
- Part No.:
- RD15ES-T1
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
RD15ES-T1.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:8,000
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Product details
Overview
RD15ES-T1 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), designed for precision voltage regulation and transient suppression in low-power analog circuits.
For engineers reviewing the RD15ES-T1 datasheet, RD15ES-T1 pinout, RD15ES-T1 application, or RD15ES-T1 equivalent, this device 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-T1 employs planar junction technology and DHD construction to enhance thermal dissipation through both leads, enabling reliable operation at junction temperatures up to 175°C. Its zener voltage is specified at test current IZ = 5 mA with dynamic impedance ZZ ≤ 25 Ω and knee impedance ZZK ≤ 110 Ω.
It exhibits a positive temperature coefficient of approximately +0.06 %/°C (≈ +9 mV/°C) near 15 V, confirmed in Fig. 9 of D13935EJ7V0DS, and maintains reverse leakage IR ≤ 0.2 µA at VR = 11 V, supporting low-power biasing and high-impedance reference applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 13.48–15.02 V at IZ = 5 mA - defines stable regulation window for 15 V nominal systems |
| Power Dissipation P | 400 mW at TA = 25°C - sets maximum continuous DC power handling on standard PCB |
| Dynamic Impedance ZZ | ≤25 Ω at IZ = 5 mA - ensures minimal output voltage variation under load current changes |
| Surge Reverse Power PRSM | 100 W (t = 10 µs) - enables transient overvoltage clamping without failure |
| Reverse Leakage IR | ≤0.2 µA at VR = 11 V - supports high-impedance sensing and low-quiescent-current designs |
| Junction Temperature Tj | –65 to +175°C - allows operation in extended industrial environments |
| Package | DO-34 (JEDEC) - axial glass body, 2.4 mm max length, 5 mm lead pitch compatible with through-hole assembly |
Pinout & Package
DO-34 package: axial glass body with cathode indicated by black band; leads serve as anode and cathode terminals with no internal bonding asymmetry - thermal performance relies on symmetric PCB copper area per Fig. 7.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential node in reverse-biased zener configuration; carries forward current up to 150 mA |
| Cathode | Zener breakdown terminal | Marked with black band; referenced to regulated output voltage; sinks zener current during regulation |
Key Features
| Feature | Design Value |
|---|---|
| DHD (Double Heatsink Diode) construction | Thermal resistance reduced via dual-lead heat path - improves power derating on small PCBs |
| Planar junction process | Enables tight VZ tolerance (±5%) and repeatable ZZ across production lots |
| DO-34 glass sealed package | Hermetic seal ensures long-term stability and moisture resistance in humid environments |
| E24-standard zener voltage grading | Supports standardized BOM selection across 15 V supply rails without custom calibration |
| Low knee impedance ZZK | ≤110 Ω at IZ = 0.5 mA - maintains regulation even at microampere bias currents |
Applications
| Industrial Sensor Signal Conditioning | USB Port Overvoltage Protection |
|---|---|
|
Use Scenario: Stabilizing reference voltage for 12-bit ADC front-end in temperature transmitters operating at –40°C to +85°C ambient. IC Role / Device Role / Timing Role: Zener reference source providing 15 V rail for op-amp biasing and ADC reference buffer. Use Value: Tight 13.48–15.02 V tolerance and ≤0.2 µA leakage ensure <0.01% full-scale error contribution at 25°C and minimal drift over temperature. |
Use Scenario: Clamping induced ESD transients on USB D+ line before entering USB transceiver IC. IC Role / Device Role / Timing Role: Fast-acting shunt protector absorbing 8 kV HBM surges while limiting clamped voltage to ≤15.5 V. Use Value: 100 W surge rating (10 µs) and low ZZ enable sub-10 ns response to fast transients without latch-up or degradation. |
| Programmable Logic Controller (PLC) Input Isolation | LED Driver Current Regulation |
|
Use Scenario: Providing isolated 15 V supply for optocoupler input stage in 24 V DC digital input modules. IC Role / Device Role / Timing Role: Constant-voltage regulator stabilizing optocoupler LED forward voltage against supply ripple. Use Value: 400 mW power rating supports continuous 10 mA LED drive with >2000-hour reliability under thermal cycling. |
Use Scenario: Setting precise current limit in linear LED driver for architectural lighting with color consistency requirements. IC Role / Device Role / Timing Role: Voltage reference for current-sense amplifier feedback loop controlling MOSFET gate drive. Use Value: ≤25 Ω dynamic impedance ensures <1% current variation across 10–100 mA LED loads, preserving luminous flux accuracy. |
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, ±5% tolerance, 1 W power rating, DO-41 package | Higher power but larger footprint; less suitable for space-constrained PCBs | Select when >400 mW continuous dissipation is required and board area permits DO-41 |
| BZX55-C15 | 15 V nominal, ±5% tolerance, 500 mW rating, DO-35 package | Slightly higher power, plastic package - lower moisture resistance than DO-34 glass | Prefer for cost-sensitive consumer applications where hermeticity is not critical |
Compared with 1N4744A and BZX55-C15, RD15ES-T1 offers superior thermal stability via DHD construction and JEDEC-qualified DO-34 glass sealing, making it optimal for industrial signal conditioning where long-term VZ drift and humidity resilience are design-critical.
Availability
RD15ES-T1 is available at Aetrix Electronics and suitable for industrial sensor interfaces, USB port protection circuits, and PLC input isolation stages requiring stable component supply with traceable lot history and RoHS-compliant sourcing.
Supply support for RD15ES-T1 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 Japanese semiconductor manufacturer formed in 2010 through the merger of NEC Electronics and Renesas Technology, specializing in microcontrollers, analog, and power devices for industrial and automotive markets.
The RD15ES-T1 belongs to the RD2.0ES–RD39ES series of precision zener diodes engineered for constant-voltage regulation, waveform clipping, and surge absorption in industrial control and instrumentation systems.
FAQ
What is the zener voltage tolerance of RD15ES-T1?
The RD15ES-T1 has a zener voltage range of 13.48 V to 15.02 V at IZ = 5 mA, corresponding to ±5% tolerance about the nominal 15 V rating. This tolerance is verified per the D13935EJ7V0DS datasheet and applies to all units shipped under the AB1, AB2, and AB3 suffix variants of RD15ES-T1.
Does RD15ES-T1 support surge protection applications?
Yes, RD15ES-T1 is rated for 100 W non-repetitive surge reverse power at t = 10 µs (per Fig. 10), making it suitable for transient voltage suppression in low-energy signal lines. Its DHD construction enhances thermal recovery between surges, though repetitive events require duty-cycle derating per Fig. 6.
What is the maximum forward current rating for RD15ES-T1?
The absolute maximum forward current for RD15ES-T1 is 150 mA at TA = 25°C, as specified in the Absolute Maximum Ratings table. Exceeding this value risks metallization failure or bond wire lift, especially under elevated ambient temperatures.
Is RD15ES-T1 RoHS compliant?
Yes, RD15ES-T1 meets EU RoHS Directive requirements. Renesas Electronics confirms compliance for this part in the D13935EJ7V0DS datasheet and provides material declarations upon request through official sales channels.
What package type does RD15ES-T1 use and how is polarity marked?
RD15ES-T1 uses the DO-34 (JEDEC) axial glass package with a black cathode band marking the cathode terminal. The body length is ≤2.4 mm and lead pitch is optimized for 5 mm PCB layouts, as shown in the Package Dimensions diagram.
RD15ES-T1 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-T1 FAQ
1.How can I place an order for RD15ES-T1 through Aetrix?
Please submit a Request for Quotation (RFQ) for RD15ES-T1 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-T1 reliable?
The price and inventory of RD15ES-T1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RD15ES-T1 is usually 5 days.
3.What payment methods are accepted for RD15ES-T1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RD15ES-T1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RD15ES-T1?
RD15ES-T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RD15ES-T1 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-T1?
For technical support, including RD15ES-T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RD15ES-T1 requirements.
6.How does Aetrix verify that RD15ES-T1 is sourced from the original manufacturer or authorized distributors?
All RD15ES-T1 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-T1 meets industry standards.
7.What is the process for return or replacement of RD15ES-T1?
All RD15ES-T1 units undergo pre-shipment inspection (PSI). If there is an issue with RD15ES-T1, 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-T1 part is unused and in its original packaging.
Return procedure for RD15ES-T1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RD15ES-T1 Tags
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