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Renesas RD5.6ES-T1
- Part No.:
- RD5.6ES-T1
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
RD5.6ES-T1.pdf
- Description:
- DIODE ZENER 5.6V
- Quantity:
- Payment:
- Shipping:
Inventory:50,000
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Product details
Overview
RD5.6ES-T1 from Renesas Electronics is a 5.6 V, 400 mW DO-34 glass-sealed Zener diode with DHD (Double Heatsink Diode) construction, ±5% zener voltage tolerance at 5 mA test current, 2.5 Ω typical dynamic impedance, and 5 µA maximum reverse leakage at 4.05 V - used for precision voltage regulation in low-power analog reference circuits.
For engineers reviewing the RD5.6ES-T1 datasheet, RD5.6ES-T1 pinout, RD5.6ES-T1 application, or RD5.6ES-T1 equivalent, this component serves as a stable shunt regulator in power supply feedback loops, overvoltage clamping in signal conditioning stages, and voltage reference generation for ADC biasing and sensor excitation circuits.
Technical Context
This Zener diode operates in reverse breakdown mode with a nominal zener voltage of 5.6 V at IZ = 5 mA, exhibiting a temperature coefficient of +2.5 mV/°C (typical) and a knee dynamic impedance (ZZK) of ≤5 Ω at IZK = 0.5 mA. Its DHD construction enables enhanced thermal dissipation through dual heatsinking paths along the axial leads.
The device complies with E24 standard voltage grading, supports surge reverse power up to 100 W for 10 µs pulses, and maintains stable regulation across ambient temperatures from –65°C to +175°C with derated power above 25°C per Fig. 6.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 5.29–5.88 V at IZ = 5 mA - defines regulated output voltage range under nominal bias |
| Dynamic Impedance (ZZ) | 2.5 Ω typical at IZ = 5 mA - determines output voltage stability against load current variation |
| Power Dissipation (P) | 400 mW at TA = 25°C - sets maximum continuous DC power handling before thermal derating |
| Reverse Leakage (IR) | ≤5 µA at VR = 4.05 V - ensures minimal quiescent current in standby or high-impedance reference nodes |
| Surge Reverse Power (PRSM) | 100 W for t = 10 µs - enables transient overvoltage suppression without failure |
| Junction Temperature (Tj) | 175°C maximum - allows operation in high-temperature industrial environments with proper PCB thermal relief |
| Package | DO-34 (JEDEC) - axial glass-body package with 2.4 mm max body length and 5 mm lead pitch for through-hole mounting |
Pinout & Package
RD5.6ES-T1 uses a two-terminal DO-34 axial package with cathode indicated by a black band. The device has no active pin configuration beyond anode and cathode terminals; polarity must be observed during PCB placement to ensure reverse-bias operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener reference ground node | Connected to circuit ground or lowest potential point when used as shunt regulator |
| Cathode | Reverse-biased Zener terminal / regulated output node | Provides stable 5.6 V reference relative to anode; marked with black band on DO-34 body |
Key Features
| Feature | Design Value |
|---|---|
| DHD (Double Heatsink Diode) construction | Enables dual thermal path conduction from junction to both axial leads, improving power handling vs. standard DO-34 diodes |
| Planar process technology | Delivers tight VZ tolerance control (±5%) and repeatable dynamic impedance across production lots |
| E24-standard zener voltage grading | Ensures compatibility with industry-standard resistor and reference value selection practices |
| DO-34 glass-sealed package | Provides hermetic sealing and mechanical robustness for long-term reliability in humid or contaminated environments |
| Short-pitch lead spacing (5 mm) | Allows dense PCB layout in space-constrained analog sections without requiring lead forming |
Applications
| Power Supply Feedback Regulation | Signal-Level Voltage Clamping |
|---|---|
Use Scenario: Stabilizing output voltage in linear regulator feedback networks or switching converter error amplifiers. IC Role / Device Role: Shunt reference element providing precise 5.6 V threshold for error comparator input. Use Value: Maintains ±1% output regulation accuracy over line/load variations due to low ZZ and stable VZ tempco. |
Use Scenario: Limiting analog signal swing to protect downstream op-amp inputs from overvoltage damage. IC Role / Device Role: Bidirectional clamping diode (with series resistor) referenced to 5.6 V rail. Use Value: Limits transients to ≤5.88 V while drawing <100 µA at normal signal levels, preserving signal integrity. |
| Sensor Excitation Reference | Microcontroller ADC Reference Source |
Use Scenario: Providing stable bias voltage for resistive bridge sensors (e.g., strain gauges, RTDs) in industrial measurement modules. IC Role / Device Role: Low-noise, low-drift voltage reference for constant-current source or ratiometric excitation. Use Value: Delivers <5 ppm/°C effective tempco when combined with matched resistor dividers, enabling 0.1% measurement accuracy. |
Use Scenario: Supplying external reference voltage to 10-bit or 12-bit microcontroller ADCs where internal VREF is insufficiently stable. IC Role / Device Role: Precision shunt reference connected between AVDD and AGND pins of MCU. Use Value: Reduces ADC INL error by >3 LSB compared to internal reference, especially under varying supply conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4734A | Same 5.6 V nominal VZ, but 1 W rating, DO-41 package, higher ZZ (5 Ω min), ±5% tolerance | Higher power handling; requires larger PCB footprint and different thermal design | Choose when >400 mW continuous dissipation is needed; not drop-in due to DO-41 vs. DO-34 mechanical mismatch |
| BZX55-C5V6 | 5.6 V VZ, 500 mW rating, DO-35 package, ZZ = 10 Ω max at 5 mA, ±5% tolerance | Higher power and slightly looser impedance spec; DO-35 body is longer (4.1 mm) than DO-34 (2.4 mm) | Prefer for new designs needing marginally better surge capability; requires rework of footprint and stencil |
Compared with RD5.6ES-T1, the 1N4734A offers higher power but demands board real estate and thermal redesign, while BZX55-C5V6 provides modest power uplift in a non-interchangeable package - RD5.6ES-T1 remains optimal for space-constrained, thermally managed 400 mW reference applications.
Availability
RD5.6ES-T1 is available at Aetrix Electronics and suitable for precision voltage reference, analog signal clamping, and low-power regulator feedback applications requiring stable component supply and long-lifecycle support.
Supply support for RD5.6ES-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 global semiconductor manufacturer specializing in microcontrollers, analog power devices, and timing solutions for industrial, automotive, and communications markets.
RD5.6ES-T1 belongs to the legacy NEC RD-series Zener diode family, designed specifically for high-stability, low-power voltage reference and protection functions in cost-sensitive industrial and consumer electronics.
FAQ
What is the nominal zener voltage and tolerance of RD5.6ES-T1?
The RD5.6ES-T1 has a nominal zener voltage of 5.6 V with a tolerance of ±5%, specified at a test current of 5 mA. Measured values fall between 5.29 V and 5.88 V under those conditions, as confirmed in the D13935EJ7V0DS datasheet Table on page 3. This tolerance ensures predictable regulation in feedback and reference circuits without requiring post-production trimming.
Does RD5.6ES-T1 support surge protection, and what is its pulse rating?
Yes, RD5.6ES-T1 supports transient suppression with a non-repetitive surge reverse power rating of 100 W for pulse width t = 10 µs, as shown in Fig. 10 of the datasheet. This enables reliable clamping of ESD or inductive kick events in signal lines and power rails without degradation, provided average power remains within the 400 mW DC limit.
What is the thermal resistance and derating behavior of RD5.6ES-T1?
RD5.6ES-T1 exhibits a junction-to-ambient thermal resistance of approximately 375°C/W (per Fig. 11), and its power dissipation must be linearly derated above 25°C ambient - dropping to ~200 mW at 75°C and ~100 mW at 125°C (per Fig. 6). This behavior is critical when deploying RD5.6ES-T1 in enclosed industrial enclosures or near heat-generating components.
How does the DHD construction improve RD5.6ES-T1 performance?
The DHD (Double Heatsink Diode) construction in RD5.6ES-T1 provides two parallel thermal conduction paths from the silicon junction to both axial leads, reducing effective thermal resistance versus conventional DO-34 diodes. This allows RD5.6ES-T1 to sustain its full 400 mW rating with less temperature rise, enhancing long-term stability in continuous regulation applications.
Is RD5.6ES-T1 RoHS compliant and suitable for modern assembly processes?
RD5.6ES-T1 is manufactured to RoHS-compliant specifications per Renesas' environmental policy (Note 10 in the datasheet), supporting lead-free reflow soldering. Its DO-34 glass package withstands standard wave and reflow profiles, and the device carries no exemptions - making RD5.6ES-T1 suitable for current industrial and consumer electronics production without compliance concerns.
RD5.6ES-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:
- -
RD5.6ES-T1 FAQ
1.How can I place an order for RD5.6ES-T1 through Aetrix?
Please submit a Request for Quotation (RFQ) for RD5.6ES-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 RD5.6ES-T1 reliable?
The price and inventory of RD5.6ES-T1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RD5.6ES-T1 is usually 5 days.
3.What payment methods are accepted for RD5.6ES-T1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RD5.6ES-T1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RD5.6ES-T1?
RD5.6ES-T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RD5.6ES-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 RD5.6ES-T1?
For technical support, including RD5.6ES-T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RD5.6ES-T1 requirements.
6.How does Aetrix verify that RD5.6ES-T1 is sourced from the original manufacturer or authorized distributors?
All RD5.6ES-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 RD5.6ES-T1 meets industry standards.
7.What is the process for return or replacement of RD5.6ES-T1?
All RD5.6ES-T1 units undergo pre-shipment inspection (PSI). If there is an issue with RD5.6ES-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 RD5.6ES-T1 part is unused and in its original packaging.
Return procedure for RD5.6ES-T1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RD5.6ES-T1 Tags
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