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Renesas RD36F(N6)-T6
- Part No.:
- RD36F(N6)-T6
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
RD36F(N6)-T6.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:5,000
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Product details
Overview
RD36F(N6)-T6 from Renesas Electronics is a 1 W planar-type silicon Zener diode with a nominal zener voltage of 36 V (B3 grade: 35.19–37.01 V), dynamic impedance of 20 Ω at 10 mA, and zener voltage temperature coefficient of +27 mV/°C. It features a DO-41 glass-sealed DHD (Double Heatsink Diode) package and is rated for surge reverse power up to 400 W (t = 10 μs), making it suitable for precision voltage regulation and transient suppression in industrial power supplies.
For engineers reviewing the RD36F(N6)-T6 datasheet, RD36F(N6)-T6 pinout, RD36F(N6)-T6 application, or RD36F(N6)-T6 equivalent, this component serves as a stable 36 V reference in constant-voltage circuits, waveform clippers, and surge-absorbing protection stages - with critical attention required to its ±5% voltage tolerance, thermal resistance profile, and derated power dissipation above 25°C ambient.
Technical Context
This Zener diode operates in reverse breakdown mode with tightly controlled voltage regulation across a 10 mA test current. Its planar junction construction ensures consistent dynamic impedance (Zz = 20 Ω max) and low leakage (IR ≤ 10 μA at VR = 29 V).
The device uses a glass-passivated DO-41 package with axial leads and black cathode marking, enabling reliable heat dissipation via PCB copper area (Rth ≈ 200°C/W on 5 mm² foil). Its positive temperature coefficient (+27 mV/°C) supports stable biasing in temperature-compensated references.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (Vz) | 35.19–37.01 V at IZ = 10 mA - defines regulated output range for voltage reference or clamp circuits |
| Power Dissipation (P) | 1.0 W at TA = 25°C - requires thermal derating above 25°C per Figure 1 (e.g., ~0.6 W at 80°C) |
| Dynamic Impedance (Zz) | 20 Ω max at IZ = 10 mA - determines regulation stiffness under load transients |
| Reverse Current (IR) | ≤10 μA at VR = 29 V - ensures low standby leakage in high-impedance bias networks |
| Temperature Coefficient (γZ) | +27 mV/°C - enables predictable drift compensation in multi-diode reference designs |
| Surge Power (PRSM) | 400 W for t = 10 μs - supports single-event ESD/surge absorption without failure |
| Junction Temperature (Tj) | 175°C max - sets upper limit for thermal design margin in enclosed environments |
Pinout & Package
RD36F(N6)-T6 uses a DO-41 axial-leaded glass package (JEDEC standard), with cathode identified by a black band. The device has two terminals: anode and cathode - no internal circuitry or additional pins.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Reverse breakdown reference ground | Connected to lower-potential node in Zener regulator; establishes reference return path |
| Cathode | Reverse-biased voltage reference terminal | Marked with black band; connected to higher-potential rail to maintain regulated Vz drop |
Key Features
| Feature | Design Value |
|---|---|
| Wide zener voltage range (2–82 V) | Enables standardized BOM across multiple voltage rails using same footprint and process |
| E24 series nominal values | Ensures compatibility with common resistor ladder and feedback network values |
| DO-41 glass-sealed DHD structure | Provides mechanical robustness and thermal stability for industrial-grade mounting |
| 1 W continuous power rating | Supports direct replacement of legacy 1 W Zeners without heatsink redesign |
| B3 grade voltage tolerance | Offers tighter 5.2% tolerance (vs. full B grade's 10%) for improved system accuracy |
Applications
| Industrial Power Supply Regulation | Overvoltage Protection Clamping |
|---|---|
Use Scenario: Stabilizing 36 V auxiliary rail in programmable logic controller (PLC) power module. IC Role / Device Role / Timing Role: Zener reference element providing precise 36 V DC bias for op-amp comparators and LDO error amplifiers. Use Value: Maintains ±1.5% output regulation over −40°C to +85°C due to known +27 mV/°C TC and low Zz. |
Use Scenario: Protecting microcontroller I/O pins against 40 V transients induced by relay coil flyback. IC Role / Device Role / Timing Role: Fast-acting shunt clamp limiting voltage to 37.01 V peak during surge events. Use Value: Absorbs 400 W for 10 μs without degradation, preventing latch-up or gate oxide damage. |
| DC-DC Converter Feedback Reference | Waveform Limiting in Signal Conditioning |
Use Scenario: Setting output voltage of isolated flyback converter via optocoupler feedback network. IC Role / Device Role / Timing Role: Precision voltage reference in secondary-side error amplifier divider string. Use Value: Enables <±2% output accuracy with minimal drift across line/load/temperature variations. |
Use Scenario: Clipping analog sensor signal to ±36 V range before ADC input stage. IC Role / Device Role / Timing Role: Bidirectional limiter (with series diode) defining hard voltage boundaries. Use Value: Limits signal excursion with <10 ns response and <20 Ω dynamic impedance for minimal distortion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4738A | Zener voltage 22 V (not 36 V); DO-41; 1 W; Zz = 25 Ω at 19 mA | Not interchangeable - mismatched voltage grade prevents direct substitution in 36 V circuits | Select only if redesigning reference voltage level and recalculating feedback dividers |
| BZX55-C36 | Zener voltage 36 V (±5%); DO-35; 500 mW; Zz = 50 Ω at 5 mA | Lower power rating and higher Zz limit use in low-current, non-critical clamping roles | Acceptable for signal-level clipping where 1 W surge handling is unnecessary |
Compared with RD36F(N6)-T6, 1N4738A targets 22 V systems and cannot replace it without circuit modification, while BZX55-C36 offers same nominal voltage but lacks the 1 W continuous rating and low-impedance regulation needed for power-stage references.
Availability
RD36F(N6)-T6 is available at Aetrix Electronics and suitable for industrial power supply regulation, overvoltage protection clamping, and DC-DC converter feedback reference requiring stable component supply and long-term obsolescence management.
Supply support for RD36F(N6)-T6 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 specializing in microcontrollers, analog, power, and timing solutions for industrial, automotive, and infrastructure markets.
RD36F(N6)-T6 belongs to Renesas' legacy planar Zener diode family designed for general-purpose voltage regulation and transient suppression in Standard-grade applications including industrial automation and office equipment.
FAQ
What is the exact zener voltage tolerance for RD36F(N6)-T6?
The RD36F(N6)-T6 is specified as a B3 grade device, with a zener voltage range of 35.19 V to 37.01 V at 10 mA - representing a ±5.2% tolerance around the nominal 36 V value. This tighter tolerance than standard B grade (±10%) improves accuracy in voltage reference and feedback applications without requiring post-production sorting.
Can RD36F(N6)-T6 be used in surface-mount designs?
No - RD36F(N6)-T6 uses a through-hole DO-41 axial package with lead spacing optimized for radial PCB mounting. It is not compatible with SMT reflow processes or pick-and-place assembly. For surface-mount equivalents, consider Renesas' MELF or SOD-123 packaged Zeners (e.g., UDZS36B), which require separate qualification and layout adaptation.
What is the maximum allowable ambient temperature for continuous 1 W operation of RD36F(N6)-T6?
RD36F(N6)-T6 delivers its full 1 W power rating only at TA = 25°C. Above that, power must be linearly derated: Figure 1 shows P = 1.0 W × (1 − (TA − 25)/155), yielding ~0.62 W at 80°C ambient. Continuous operation above 125°C ambient is prohibited, as junction temperature would exceed the 175°C absolute maximum even with ideal heatsinking.
Does RD36F(N6)-T6 meet RoHS requirements?
Yes - RD36F(N6)-T6 complies with EU RoHS Directive 2011/65/EU, as confirmed by Renesas' material declarations and manufacturing records. The device contains no lead, mercury, cadmium, hexavalent chromium, PBB, or PBDE above threshold limits, and uses lead-free glass encapsulation and matte tin-plated leads.
How does the +27 mV/°C temperature coefficient affect circuit performance?
The +27 mV/°C zener voltage temperature coefficient means RD36F(N6)-T6's regulated voltage increases by approximately 27 mV per degree Celsius rise in junction temperature. In precision references, this drift must be compensated - e.g., by pairing with a negative-TC component or using temperature-stable PCB layouts with controlled thermal coupling.
RD36F(N6)-T6 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:
- -
RD36F(N6)-T6 FAQ
1.How can I place an order for RD36F(N6)-T6 through Aetrix?
Please submit a Request for Quotation (RFQ) for RD36F(N6)-T6 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 RD36F(N6)-T6 reliable?
The price and inventory of RD36F(N6)-T6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RD36F(N6)-T6 is usually 5 days.
3.What payment methods are accepted for RD36F(N6)-T6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RD36F(N6)-T6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RD36F(N6)-T6?
RD36F(N6)-T6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RD36F(N6)-T6 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 RD36F(N6)-T6?
For technical support, including RD36F(N6)-T6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RD36F(N6)-T6 requirements.
6.How does Aetrix verify that RD36F(N6)-T6 is sourced from the original manufacturer or authorized distributors?
All RD36F(N6)-T6 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 RD36F(N6)-T6 meets industry standards.
7.What is the process for return or replacement of RD36F(N6)-T6?
All RD36F(N6)-T6 units undergo pre-shipment inspection (PSI). If there is an issue with RD36F(N6)-T6, 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 RD36F(N6)-T6 part is unused and in its original packaging.
Return procedure for RD36F(N6)-T6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RD36F(N6)-T6 Tags
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MMBZ5240B-7-F
Diodes Incorporated
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BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
Diodes Incorporated
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BZT52C15-7-F
Diodes Incorporated
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BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
Diodes Incorporated
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MMSZ4682T1G
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BZT52C15S-7-F
Diodes Incorporated
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MM5Z5V1ST1G
onsemi
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SMAJ4744A-TP
Micro Commercial Co
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BZT52C3V6LP-7
Diodes Incorporated
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SMAZ12-13-F
Diodes Incorporated
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