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Renesas RD3.6F-T7-AZ
- Part No.:
- RD3.6F-T7-AZ
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
RD3.6F-T7-AZ.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:5,000
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Product details
Overview
RD3.6F-T7-AZ from Renesas Electronics is a 1 W planar-type silicon Zener diode with a nominal zener voltage of 3.6 V (B2 grade: 3.58–3.83 V), dynamic impedance of 15 Ω at 40 mA, and temperature coefficient of −2.5 mV/°C. It features DO-41 glass-sealed DHD packaging and is used for voltage regulation, waveform clipping, and surge absorption in power supply and signal conditioning circuits.
For engineers reviewing the RD3.6F-T7-AZ datasheet, RD3.6F-T7-AZ pinout, RD3.6F-T7-AZ application, or RD3.6F-T7-AZ equivalent, key selection criteria include zener voltage tolerance (±3.5%), low dynamic impedance for stable regulation, thermal resistance characteristics under PCB copper area variation, and compliance with Standard-grade reliability for industrial and consumer equipment.
Technical Context
This Zener diode operates in reverse breakdown mode with a specified test current of 40 mA for voltage rating. Its planar junction and glass-sealed DO-41 package ensure stable long-term performance and moisture resistance.
The device exhibits a negative temperature coefficient (−2.5 mV/°C), indicating decreasing zener voltage with rising junction temperature - critical for thermal drift analysis in precision reference designs. Surge reverse power capability reaches 400 W for 10 μs pulses, supporting transient protection roles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 3.58–3.83 V at IZ = 40 mA - defines regulated output voltage range under standard test conditions |
| Dynamic Impedance (ZZ) | 15 Ω max at IZ = 40 mA - determines output voltage stability against load current changes |
| Power Dissipation (P) | 1.0 W at TA = 25°C - sets maximum continuous DC power handling before thermal derating |
| Reverse Current (IR) | 200 μA max at VR = 0.5 V - quantifies leakage in sub-threshold reverse bias, affecting standby power |
| Temperature Coefficient (γZ) | −2.5 mV/°C typical - indicates voltage drift per degree rise in junction temperature |
| Surge Reverse Power (PRSM) | 400 W at t = 10 μs - supports short-duration transient suppression without failure |
| Junction Temperature (Tj) | 175°C maximum - defines upper thermal limit for reliable operation |
Pinout & Package
RD3.6F-T7-AZ uses a DO-41 axial-leaded glass package with cathode indicated by a black band. The device has two terminals: anode and cathode - no internal circuitry or multi-pin configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential node in reverse-bias regulation applications |
| Cathode | Zener breakdown terminal | Marked with black band; connected to higher-potential node to enable controlled reverse conduction |
Key Features
| Feature | Design Value |
|---|---|
| Wide zener voltage range (2–82 V) | Enables standardized BOM across multiple voltage rails using same platform process |
| E24 series nominal values | Ensures compatibility with common resistor and capacitor value selections in analog design |
| DO-41 glass-sealed DHD structure | Provides mechanical robustness and hermetic sealing for high-reliability environments |
| 175°C maximum junction temperature | Supports operation in thermally constrained enclosures without active cooling |
| Standard quality grade | Qualified for computers, office equipment, communications gear, and industrial robots per Renesas classification |
Applications
| Power Supply Regulation | Waveform Clipping |
|---|---|
Use Scenario: Stabilizing reference voltage in linear regulator feedback networks or low-power microcontroller reset circuits. IC Role / Device Role: Zener diode operating in reverse breakdown to clamp voltage at 3.6 V ±3.5%. Use Value: Provides cost-effective, passive voltage reference with 15 Ω dynamic impedance ensuring <10 mV output variation over 10–50 mA load range. | Use Scenario: Limiting audio signal peaks in preamplifier stages to prevent amplifier saturation. IC Role / Device Role: Bidirectional clamping element (with series resistor) limiting swing to ±3.6 V relative to ground. Use Value: Enables distortion-free clipping with fast response (<1 ns recovery) and minimal leakage (<200 μA at 0.5 V). |
| Surge Absorption | Constant-Current Biasing |
Use Scenario: Protecting I/O pins of microcontrollers from ESD or inductive kickback in automotive body control modules. IC Role / Device Role: Transient voltage suppressor absorbing 400 W surges for 10 μs without degradation. Use Value: Meets IEC 61000-4-2 Level 3 (8 kV contact) requirements when paired with 10 Ω series impedance. | Use Scenario: Establishing stable bias current for LED drivers or transistor amplifiers where precision is secondary to simplicity. IC Role / Device Role: Current-setting element via series resistor, leveraging predictable VZ and low ZZ. Use Value: Delivers ±5% current accuracy over 0–70°C ambient with no active components required. |
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%), ZZ = 10 Ω max at 76 mA, DO-41 package | Lower nominal voltage and tighter tolerance; higher test current shifts operating point | Select when 3.3 V reference is required and higher test current aligns with system bias design |
| BZX55-C3V6 | Zener voltage 3.6 V (±5%), ZZ = 90 Ω max at 5 mA, DO-35 package | Higher dynamic impedance and smaller DO-35 package reduce power handling (500 mW) | Choose for space-constrained PCBs where 500 mW rating suffices and 90 Ω ZZ is acceptable |
Compared with RD3.6F-T7-AZ, 1N4728A offers lower voltage and better impedance but requires higher bias current, while BZX55-C3V6 sacrifices power rating and regulation stiffness for footprint reduction - making RD3.6F-T7-AZ optimal for 1 W, 3.6 V stabilization where thermal margin and low-Z performance are prioritized.
Availability
RD3.6F-T7-AZ is available at Aetrix Electronics and suitable for power supply regulation, waveform clipping, and surge absorption applications requiring stable component supply and long-term industrial availability.
Supply support for RD3.6F-T7-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 Japanese semiconductor manufacturer formed in 2010 through the merger of NEC Electronics and Renesas Technology, specializing in microcontrollers, analog, and power devices.
The RD-series Zener diodes were designed for general-purpose voltage regulation and protection in Standard-grade applications including office equipment, communications hardware, and industrial automation systems.
FAQ
What is the zener voltage tolerance for RD3.6F-T7-AZ?
The RD3.6F-T7-AZ has a B2 grade zener voltage specification of 3.58 V minimum to 3.83 V maximum at 40 mA test current, corresponding to ±3.5% tolerance around the nominal 3.6 V rating. This tolerance is verified per Renesas Data Sheet D13936EJ5V0DS and applies under standard 40 ms pulse testing conditions.
Does RD3.6F-T7-AZ have a positive or negative temperature coefficient?
RD3.6F-T7-AZ has a negative temperature coefficient of −2.5 mV/°C typical, meaning its zener voltage decreases by approximately 2.5 mV for every 1°C rise in junction temperature. This behavior is confirmed in the "Electrical Characteristics" table of Renesas' official datasheet and must be accounted for in temperature-sensitive reference designs.
What package type does RD3.6F-T7-AZ use?
RD3.6F-T7-AZ uses the JEDEC-standard DO-41 axial-leaded glass package with a planar-type double heatsink diode (DHD) structure. The cathode is marked with a black band, and overall dimensions conform to φ3.0 mm maximum diameter and 25 mm minimum lead length per the package drawing in Renesas' datasheet.
Can RD3.6F-T7-AZ be used for surge protection?
Yes, RD3.6F-T7-AZ supports surge absorption with a rated surge reverse power (PRSM) of 400 W for 10 μs pulses at 25°C ambient, as specified in the Absolute Maximum Ratings table. Its DO-41 glass seal and thermal design allow reliable transient clamping in I/O protection and power rail conditioning applications.
Is RD3.6F-T7-AZ qualified for automotive applications?
No, RD3.6F-T7-AZ is classified as a Standard-grade Renesas product intended for computers, office equipment, communications gear, and industrial robots - not for automotive (High Quality grade) or safety-critical (Specific grade) use. Automotive deployment would require formal qualification and written consent from Renesas Electronics per their quality grading policy.
RD3.6F-T7-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:
- -
RD3.6F-T7-AZ FAQ
1.How can I place an order for RD3.6F-T7-AZ through Aetrix?
Please submit a Request for Quotation (RFQ) for RD3.6F-T7-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 RD3.6F-T7-AZ reliable?
The price and inventory of RD3.6F-T7-AZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RD3.6F-T7-AZ is usually 5 days.
3.What payment methods are accepted for RD3.6F-T7-AZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RD3.6F-T7-AZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RD3.6F-T7-AZ?
RD3.6F-T7-AZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RD3.6F-T7-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 RD3.6F-T7-AZ?
For technical support, including RD3.6F-T7-AZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RD3.6F-T7-AZ requirements.
6.How does Aetrix verify that RD3.6F-T7-AZ is sourced from the original manufacturer or authorized distributors?
All RD3.6F-T7-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 RD3.6F-T7-AZ meets industry standards.
7.What is the process for return or replacement of RD3.6F-T7-AZ?
All RD3.6F-T7-AZ units undergo pre-shipment inspection (PSI). If there is an issue with RD3.6F-T7-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 RD3.6F-T7-AZ part is unused and in its original packaging.
Return procedure for RD3.6F-T7-AZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RD3.6F-T7-AZ Tags
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