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Renesas RD5.6ES-AZ
- Part No.:
- RD5.6ES-AZ
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
RD5.6ES-AZ.pdf
- Description:
- DIODE ZENER
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Product details
Overview
RD5.6ES-AZ from Renesas Electronics is a 400 mW DO-34 glass-sealed zener diode with nominal zener voltage 5.6 V, dynamic impedance ≤2.5 Ω at 5 mA, and maximum reverse current 5 µA at 4.0 V - used for precision voltage reference, overvoltage clamping, and surge suppression in low-power analog and digital supply rails.
For engineers reviewing the RD5.6ES-AZ datasheet, RD5.6ES-AZ pinout, RD5.6ES-AZ application, or RD5.6ES-AZ equivalent, this page delivers verified electrical specs, thermal derating behavior, JEDEC DO-34 package details, and real-world use cases in power regulation and transient protection circuits.
Technical Context
This device employs planar diffusion technology and DHD (Double Heatsink Diode) construction to achieve stable zener breakdown with low dynamic impedance and tight voltage tolerance. Its 400 mW power rating is thermally limited by ambient temperature per Fig. 6, and it supports non-repetitive surge pulses up to 100 W (10 µs).
The RD5.6ES-AZ exhibits a positive zener voltage temperature coefficient near zero crossing (~0.02 %/°C at 5.6 V), enabling stable reference performance across industrial temperature ranges. It is rated for junction temperatures up to 175°C and storage from –65°C to +175°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 5.29–5.88 V at IZ = 5 mA - defines precise clamping threshold for 5 V rail stabilization |
| Dynamic Impedance (ZZ) | ≤2.5 Ω at IZ = 5 mA - ensures minimal voltage shift under load variation |
| Reverse Current (IR) | ≤5 µA at VR = 4.0 V - guarantees low leakage in standby and high-impedance bias networks |
| Power Dissipation (P) | 400 mW at TA = 25°C - sets maximum continuous DC power before thermal derating applies |
| Surge Reverse Power (PRSM) | 100 W (t = 10 µs) - enables robust transient suppression against ESD and inductive spikes |
| Junction Temperature (Tj) | 175°C max - allows operation in high-ambient environments like enclosed industrial controls |
| Package | DO-34 (JEDEC) - axial glass body, 2.4 mm max length, 5 mm pitch compatible for through-hole PCB assembly |
Pinout & Package
RD5.6ES-AZ uses a standard two-terminal DO-34 glass axial package. Cathode is marked with a black band on the body. No internal circuitry or multi-pin configuration - terminals are anode and cathode only.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential node; conducts when forward-biased ≥0.7 V |
| Cathode | Zener breakdown terminal | Marked with black band; referenced to ground or supply return for reverse-bias clamping |
Key Features
| Feature | Design Value |
|---|---|
| DHD construction | Double heatsink geometry improves thermal resistance and enables 400 mW dissipation in compact DO-34 form factor |
| E24-standard VZ | 5.6 V nominal aligns with IEC 60063 E24 series - simplifies BOM rationalization and cross-vendor sourcing |
| Low knee impedance (ZZK) | ≤0.5 Ω at IZK = 0.5 mA - provides sharp turn-on for accurate low-current regulation |
| Stable tempco | ~0.02 %/°C near 5.6 V - minimizes drift in reference circuits over –40°C to +85°C operating range |
| DO-34 glass seal | Hermetic glass-to-metal encapsulation ensures long-term reliability and moisture resistance in harsh environments |
Applications
| Voltage Reference for ADC Biasing | 5 V Logic Rail Clamp |
|---|---|
Use Scenario: Providing stable 5.6 V reference to bias analog front-end op-amps feeding 12-bit SAR ADCs in data acquisition modules. IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown as shunt voltage reference. Use Value: Low dynamic impedance (≤2.5 Ω) maintains reference accuracy despite varying load current from op-amp input bias. |
Use Scenario: Protecting 5 V microcontroller I/O pins from ESD and inductive transients in industrial sensor interfaces. IC Role / Device Role / Timing Role: Shunt clamp limiting voltage excursion above 5.88 V during fast transients. Use Value: 100 W surge rating (10 µs) absorbs energy without failure, preserving downstream logic integrity. |
| Low-Power LDO Feedback Divider | Surge Absorber in Telecom Line Interface |
Use Scenario: Setting output voltage of adjustable 300 mA LDO via resistive divider where top resistor connects to RD5.6ES-AZ cathode. IC Role / Device Role / Timing Role: Precision zener replacing feedback voltage source to improve regulation tolerance. Use Value: Tight VZ tolerance (±5.2% at 5 mA) reduces overall output voltage error versus standard 5% resistors alone. |
Use Scenario: Parallel-connected on telephone line interface to suppress lightning-induced surges before protection ICs. IC Role / Device Role / Timing Role: Primary coarse clamping element handling bulk surge energy prior to TVS secondary stage. Use Value: DO-34 mechanical robustness and 175°C junction rating support sustained operation in unventilated telecom cabinets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4734A (ON Semiconductor) | Same 5.6 V nominal, but 1 W rating, DO-41 package, higher ZZ (5 Ω @ 45 mA) | Higher power handling suits higher-current regulation; larger DO-41 footprint requires layout change | Select when >400 mW continuous dissipation is needed; not drop-in due to package and thermal profile mismatch |
| BZX55-C5V6 (Vishay) | 5.6 V ±5%, DO-35 package, 500 mW rating, ZZ ≤10 Ω @ 5 mA, higher IR (10 µA @ 4 V) | Higher leakage and looser impedance limit use in ultra-low-power or precision reference roles | Acceptable for general-purpose clamping where 5 µA leakage and 2.5 Ω ZZ are critical; verify board space for DO-35 vs DO-34 |
Compared with 1N4734A and BZX55-C5V6, RD5.6ES-AZ offers the lowest dynamic impedance and tightest VZ tolerance in a miniature DO-34 package - making it optimal for space-constrained, low-leakage, high-stability 5 V reference designs where 400 mW suffices.
Availability
RD5.6ES-AZ is available at Aetrix Electronics and suitable for voltage reference, overvoltage clamping, and surge absorption applications requiring stable component supply, consistent parametric performance, and long-lifecycle availability.
Supply support for RD5.6ES-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
Renesas Electronics Corporation is a global semiconductor leader delivering microcontrollers, analog, power, and timing solutions for automotive, industrial, and consumer systems.
The RD5.6ES-AZ belongs to the legacy NEC RD2.0ES–RD39ES zener diode family, designed specifically for high-reliability, low-power voltage regulation and transient suppression in standard-grade industrial and commercial equipment.
FAQ
What is the exact zener voltage tolerance of RD5.6ES-AZ at 5 mA test current?
The RD5.6ES-AZ has a guaranteed zener voltage range of 5.29 V to 5.88 V when measured at IZ = 5 mA and TA = 25°C, corresponding to ±5.2% tolerance about the nominal 5.6 V value. This specification is confirmed in the "ELECTRICAL CHARACTERISTICS" table of Renesas document D13935EJ7V0DS, 7th edition.
Does RD5.6ES-AZ have a specified zener voltage temperature coefficient?
Yes - RD5.6ES-AZ exhibits a zener voltage temperature coefficient (γZ) of approximately +0.02 %/°C (or +1.1 mV/°C) near 5.6 V, as shown in Fig. 9 of the datasheet. This near-zero tempco enables stable reference performance across –40°C to +85°C ambient conditions without external compensation.
Can RD5.6ES-AZ be used in surface-mount designs?
No - RD5.6ES-AZ is exclusively packaged in the axial DO-34 glass case and is intended for through-hole mounting only. It lacks SMD-compatible terminations or tape-and-reel packaging. For surface-mount equivalents, consider Renesas' NSZ5.6V or similar SOD-123 devices - but these are not functionally identical replacements for RD5.6ES-AZ.
What is the maximum allowable surge pulse energy RD5.6ES-AZ can absorb?
RD5.6ES-AZ supports non-repetitive surge reverse power of 100 W for pulse width t = 10 µs (Fig. 10), corresponding to 1 mJ energy (100 W × 10 µs). This capability is validated under single-event conditions; repetitive surges require derating per thermal time constant data in Fig. 11.
Is RD5.6ES-AZ compliant with RoHS and lead-free assembly requirements?
RD5.6ES-AZ was originally released prior to RoHS enforcement (2003 datasheet), and its DO-34 glass package contains leaded solder seals. Renesas does not list RD5.6ES-AZ as RoHS-compliant in current product databases. For RoHS-compliant alternatives, consult Renesas' newer NSZ or UDZ series zener diodes with lead-free DO-35 or SOD-323 packages.
RD5.6ES-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:
- -
RD5.6ES-AZ FAQ
1.How can I place an order for RD5.6ES-AZ through Aetrix?
Please submit a Request for Quotation (RFQ) for RD5.6ES-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 RD5.6ES-AZ reliable?
The price and inventory of RD5.6ES-AZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RD5.6ES-AZ is usually 5 days.
3.What payment methods are accepted for RD5.6ES-AZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RD5.6ES-AZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RD5.6ES-AZ?
RD5.6ES-AZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RD5.6ES-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 RD5.6ES-AZ?
For technical support, including RD5.6ES-AZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RD5.6ES-AZ requirements.
6.How does Aetrix verify that RD5.6ES-AZ is sourced from the original manufacturer or authorized distributors?
All RD5.6ES-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 RD5.6ES-AZ meets industry standards.
7.What is the process for return or replacement of RD5.6ES-AZ?
All RD5.6ES-AZ units undergo pre-shipment inspection (PSI). If there is an issue with RD5.6ES-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 RD5.6ES-AZ part is unused and in its original packaging.
Return procedure for RD5.6ES-AZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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