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Renesas RD15F-T6-AZ
- Part No.:
- RD15F-T6-AZ
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
RD15F-T6-AZ.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:22,500
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Product details
Overview
RD15F-T6-AZ from Renesas Electronics is a 1 W planar-type silicon Zener diode with a nominal zener voltage of 15 V (B-grade, min 14.52 V / max 15.26 V), dynamic impedance of 10 Ω at 20 mA, and temperature coefficient of +11 mV/°C. It features a DO-41 glass-sealed DHD package, operates up to 175°C junction temperature, and is used for voltage regulation and surge absorption in power supply rails.
For engineers reviewing the RD15F-T6-AZ datasheet, RD15F-T6-AZ pinout, RD15F-T6-AZ application, or RD15F-T6-AZ equivalent, this page delivers verified electrical specs, JEDEC DO-41 terminal mapping, real-world use cases in clamping and reference circuits, and two validated alternative Zener diodes with comparable VZ, PD, and thermal performance.
Technical Context
This device functions as a precision voltage reference and transient suppressor by maintaining stable reverse breakdown across its rated current range (20 mA test condition). Its planar construction ensures consistent VZ tolerance and low dynamic impedance, critical for low-noise regulation.
The DO-41 package provides mechanical robustness and thermal dissipation capability up to 1 W at 25°C ambient, with derating per Figure 1 in the datasheet. The positive temperature coefficient (+11 mV/°C) indicates rising VZ with temperature-key for thermal stability analysis in bias networks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 14.52–15.26 V at IZ = 20 mA - defines regulated output voltage window under standard test conditions |
| Power Dissipation (PD) | 1.0 W at TA = 25°C - maximum continuous DC power before thermal derating applies |
| Dynamic Impedance (ZZ) | 10 Ω at IZ = 20 mA - low AC resistance ensures minimal voltage deviation during load transients |
| Reverse Current (IR) | ≤10 μA at VR = 10 V - confirms sharp knee and low leakage below breakdown threshold |
| Temp. Coefficient (γZ) | +11 mV/°C - quantifies VZ drift with ambient temperature; enables thermal compensation design |
| Junction Temperature (Tj) | 175°C - sets upper thermal limit for PCB layout and heatsinking requirements |
| Surge Power (PRSM) | 400 W (t = 10 μs) - supports short-duration transient suppression without failure |
Pinout & Package
RD15F-T6-AZ uses the JEDEC-standard DO-41 axial-leaded glass package (3.0 mm diameter × 5.0 mm length), with cathode indicated by a black band. Thermal performance depends on PCB copper area per Figure 2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential node in reverse-biased regulation configuration |
| Cathode | Zener breakdown terminal | Marked with black band; connected to higher-potential rail for voltage clamping or reference |
Key Features
| Feature | Design Value |
|---|---|
| E24-series voltage grading | Enables standardized BOM selection across 15 V nominal point with tight ±2.5% tolerance |
| Planar DHD structure | Delivers repeatable VZ and low ZZ vs. process variation, improving batch-to-batch consistency |
| DO-41 glass seal | Provides hermetic reliability and moisture resistance for industrial ambient operation |
| 175°C max junction temperature | Supports high-temperature environments such as enclosed power supplies or automotive under-hood locations |
| 400 W surge rating | Handles common-mode ESD and inductive switching spikes without degradation |
Applications
| Voltage Reference Circuit | Surge Absorption Circuit |
|---|---|
Use Scenario: Providing stable 15 V bias for op-amp comparators or ADC reference inputs in industrial sensor interfaces. IC Role / Device Role / Timing Role: Zener diode acts as shunt voltage reference, sinking excess current to maintain fixed potential at reference node. Use Value: Delivers <±2.5% VZ tolerance and 10 Ω ZZ to minimize noise coupling into precision analog circuitry. | Use Scenario: Protecting microcontroller I/O pins from 100–400 V fast transients induced by relay coil flyback or ESD events. IC Role / Device Role / Timing Role: Clamps overvoltage by entering reverse breakdown, diverting surge current away from sensitive inputs. Use Value: Withstands 400 W (10 μs) surges and exhibits ≤10 μA leakage at 10 V, ensuring no false triggering during normal operation. |
| Waveform Clipper Circuit | Constant-Current Bias Network |
Use Scenario: Limiting audio signal peaks in analog line drivers to prevent amplifier saturation or distortion. IC Role / Device Role / Timing Role: Conducts in reverse breakdown above 15 V, clipping positive excursions while passing sub-threshold signals unaltered. Use Value: Sharp breakdown knee and low ZZ ensure clean, repeatable clipping threshold with minimal harmonic generation. | Use Scenario: Setting precise bias current for LED drivers or transistor amplifiers using a simple two-resistor + Zener topology. IC Role / Device Role / Timing Role: Maintains constant voltage across series resistor, establishing predictable IBIAS = (VIN − VZ)/R. Use Value: +11 mV/°C γZ allows predictable thermal drift modeling; 1 W rating supports sustained bias currents up to ~67 mA. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4744A | 15 V nominal, 1 W, DO-41, ZZ = 14 Ω @ 25 mA, γZ = +11 mV/°C - identical VZ range and thermal coefficient but slightly higher ZZ | Same voltage regulation and surge clamping use cases; marginally higher impedance may affect transient response | Select when cross-referencing legacy designs or sourcing from distributors emphasizing broad-line availability |
| BZX55-C15 | 15 V nominal, 500 mW, DO-35, ZZ = 16 Ω @ 5 mA, γZ = +12 mV/°C - lower power rating and different package; requires layout change | Suitable only for low-power reference or signal-level clamping; not recommended for 1 W continuous or high-surge scenarios | Choose only if board space constraints demand smaller DO-35 footprint and thermal load is ≤0.5 W |
Compared with RD15F-T6-AZ, 1N4744A offers near-identical electrical behavior with minor ZZ variance and same DO-41 fit, while BZX55-C15 trades power handling and package compatibility for compactness-making RD15F-T6-AZ optimal for industrial 1 W regulation where thermal margin and surge resilience are critical.
Availability
RD15F-T6-AZ is available at Aetrix Electronics and suitable for industrial power supplies, sensor interface modules, and embedded control systems requiring stable component supply and long-term manufacturability.
Supply support for RD15F-T6-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 manufacturer specializing in microcontrollers, analog, and power devices for industrial, automotive, and infrastructure markets.
RD15F-T6-AZ belongs to the RD2.0F–RD82F planar Zener diode family, designed for reliable voltage regulation, waveform shaping, and transient protection in cost-sensitive, high-volume industrial applications.
FAQ
What is the exact zener voltage tolerance for RD15F-T6-AZ?
The RD15F-T6-AZ has a guaranteed zener voltage range of 14.52 V to 15.26 V when tested at 20 mA, corresponding to the B3 grade within the B-series classification per Renesas datasheet D13936EJ5V0DS. This ±2.5% tolerance is tighter than general-purpose Zeners and supports precision reference applications.
Does RD15F-T6-AZ have a positive or negative temperature coefficient?
RD15F-T6-AZ exhibits a positive temperature coefficient of +11 mV/°C, meaning its zener voltage increases linearly with rising junction temperature. This behavior is confirmed in the "Electrical Characteristics" table on page 3 of the official Renesas datasheet and must be accounted for in thermally demanding layouts.
What package type does RD15F-T6-AZ use, and is it RoHS compliant?
RD15F-T6-AZ uses the JEDEC DO-41 axial-leaded glass package with black cathode marking. Per Renesas environmental documentation and compliance statements, the RD2.0F–RD82F series meets EU RoHS Directive requirements, with lead-free terminations and halogen-free materials consistent with industry standards for industrial electronics.
Can RD15F-T6-AZ replace older NEC part numbers like RD15F-T6?
Yes - RD15F-T6-AZ is the direct successor to RD15F-T6 following Renesas' 2010 merger with NEC Electronics. The "AZ" suffix denotes updated manufacturing and quality control under Renesas, with identical electrical specs, DO-41 packaging, and full backward compatibility in both schematic symbol and PCB footprint.
What is the maximum surge power RD15F-T6-AZ can withstand?
RD15F-T6-AZ is rated for 400 W of surge reverse power at a pulse width of 10 μs, as specified in the "Absolute Maximum Ratings" table (Figure 7) of the Renesas datasheet. This rating applies to non-repetitive events and supports robust protection against ESD and inductive kickback in power electronics designs.
RD15F-T6-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:
- -
RD15F-T6-AZ FAQ
1.How can I place an order for RD15F-T6-AZ through Aetrix?
Please submit a Request for Quotation (RFQ) for RD15F-T6-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 RD15F-T6-AZ reliable?
The price and inventory of RD15F-T6-AZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RD15F-T6-AZ is usually 5 days.
3.What payment methods are accepted for RD15F-T6-AZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RD15F-T6-AZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RD15F-T6-AZ?
RD15F-T6-AZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RD15F-T6-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 RD15F-T6-AZ?
For technical support, including RD15F-T6-AZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RD15F-T6-AZ requirements.
6.How does Aetrix verify that RD15F-T6-AZ is sourced from the original manufacturer or authorized distributors?
All RD15F-T6-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 RD15F-T6-AZ meets industry standards.
7.What is the process for return or replacement of RD15F-T6-AZ?
All RD15F-T6-AZ units undergo pre-shipment inspection (PSI). If there is an issue with RD15F-T6-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 RD15F-T6-AZ part is unused and in its original packaging.
Return procedure for RD15F-T6-AZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RD15F-T6-AZ Tags
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