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Renesas RD30F(10)-T6-AZ
- Part No.:
- RD30F(10)-T6-AZ
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
RD30F(10)-T6-AZ.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
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Inventory:9,990
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Product details
Overview
RD30F(10)-T6-AZ from Renesas Electronics is a 1 W planar-type silicon Zener diode with nominal zener voltage of 30 V (B3 grade: 29.57–31.26 V), dynamic impedance ≤18 Ω at 10 mA, and reverse current ≤10 μA at 23 V. It features a DO-41 glass-sealed DHD (Double Heatsink Diode) package and is rated for junction temperature up to 175°C. It serves as a precision voltage reference and surge clamp in DC power supply regulation circuits.
For engineers reviewing the RD30F(10)-T6-AZ datasheet, RD30F(10)-T6-AZ pinout, RD30F(10)-T6-AZ application, or RD30F(10)-T6-AZ equivalent, key selection criteria include zener voltage tolerance (±2.8% for B3 grade), temperature coefficient (+23 mV/°C typical), surge reverse power rating (400 W at 10 μs), and thermal resistance characteristics under PCB copper area variations.
Technical Context
This device operates as a two-terminal voltage-regulating element relying on controlled reverse breakdown. Its planar junction structure ensures stable zener voltage with low dynamic impedance and predictable temperature coefficient behavior across its 10 mA test current.
The DO-41 package provides axial lead mounting and thermal dissipation via PCB copper foil area - power derating follows a defined curve (e.g., 1.0 W at 25°C ambient, ~0.4 W at 100°C). Surge capability is specified for single non-repetitive 10 μs pulses up to 400 W.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 29.57–31.26 V (B3 grade, tested at 40 ms after power-on; defines clamping threshold in overvoltage protection) |
| Power Dissipation (P) | 1.0 W at TA = 25°C (derates linearly above 25°C; requires ≥20 mm² copper for full rating) |
| Dynamic Impedance (ZZ) | ≤18 Ω at IZ = 10 mA (ensures minimal voltage shift under load current variation) |
| Reverse Current (IR) | ≤10 μA at VR = 23 V (confirms low leakage below breakdown; critical for standby power integrity) |
| Zener Temp. Coefficient (γZ) | +23 mV/°C typical (positive slope enables temperature-compensated references when paired with negative-coefficient devices) |
| Surge Reverse Power (PRSM) | 400 W at t = 10 μs (supports transient suppression of ESD or inductive kick without failure) |
| Junction Temperature (Tj) | −65 to +175°C (enables operation in industrial environments with wide ambient swings) |
Pinout & Package
RD30F(10)-T6-AZ uses a DO-41 axial-leaded glass package (JEDEC standard), with cathode indicated 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 / Reference ground node in shunt regulator | Connected to lower-potential side of circuit; carries forward current up to 200 mA |
| Cathode | Zener breakdown terminal / Voltage reference output node | Marked with black band; maintains regulated voltage relative to anode during reverse bias |
Key Features
| Feature | Design Value |
|---|---|
| Wide zener voltage range (2–82 V) | Enables single-family standardization across diverse supply rail voltages in industrial and consumer designs |
| E24 series nominal values | Supports common design practices with standardized 5% voltage steps; RD30F(10)-T6-AZ aligns with 30 V system targets |
| DO-41 glass-sealed DHD structure | Provides mechanical robustness and thermal stability via double heatsink geometry; improves long-term reliability vs. plastic packages |
| Positive temperature coefficient (+23 mV/°C) | Allows complementary temperature compensation in reference circuits using negative-TC components (e.g., forward-biased diodes) |
| 10 μs surge rating of 400 W | Meets IEC 61000-4-5 Level 3 surge immunity requirements without external TVS augmentation in many 24 V systems |
Applications
| DC Power Supply Regulation | Overvoltage Protection |
|---|---|
Use Scenario: Stabilizing 30 V rail in industrial PLC I/O modules where input transients exceed nominal supply. IC Role / Device Role / Timing Role: Shunt voltage reference and clamp element placed across bulk capacitor. Use Value: Maintains downstream IC operation within safe voltage limits during 400 W/10 μs surges, reducing need for larger capacitors or active regulators. |
Use Scenario: Protecting microcontroller reset pin from induced transients on 3.3 V or 5 V logic rails. IC Role / Device Role / Timing Role: Low-leakage (<10 μA) clamping diode tied between rail and ground. Use Value: Prevents false resets by limiting voltage excursions to ≤31.26 V while adding negligible quiescent load. |
| Waveform Clipping | Constant-Current Biasing |
Use Scenario: Limiting audio signal peaks in analog front-end stages of test equipment. IC Role / Device Role / Timing Role: Bidirectional clipping element in feedback path of op-amp limiter. Use Value: Provides symmetric ±30 V hard clipping with <18 Ω dynamic impedance, minimizing distortion at clipping threshold. |
Use Scenario: Generating stable bias current for LED drivers or sensor excitation circuits. IC Role / Device Role / Timing Role: Series-connected zener with ballast resistor to set current through load. Use Value: Delivers 10 mA ±1% current over −40 to +85°C due to predictable γZ and low ZZ. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5256BRLG (ON Semiconductor) | 30 V nominal, ±5% tolerance (wider than RD30F B3's ±2.8%), ZZ = 35 Ω @ 10 mA (higher impedance) | Less precise regulation; suitable for non-critical biasing but not for tight-tolerance references | Select when cost sensitivity outweighs voltage stability requirements and DO-41 compatibility is mandatory |
| BZX55-C30 (Vishay) | 30 V nominal, ±5% tolerance, P = 500 mW (half the power rating), ZZ = 30 Ω @ 5 mA | Limited surge handling (200 W/10 μs); unsuitable for high-energy transient suppression | Choose only for low-power signal-level clamping where 1 W derating margin is unnecessary |
Compared with RD30F(10)-T6-AZ, the 1N5256BRLG offers broader availability but sacrifices regulation accuracy and low-impedance performance, while the BZX55-C30 reduces thermal margin and surge resilience - making RD30F(10)-T6-AZ preferable for industrial-grade 30 V reference and protection tasks requiring 1 W continuous dissipation.
Availability
RD30F(10)-T6-AZ is available at Aetrix Electronics and suitable for industrial automation, power supply design, and test equipment manufacturing requiring stable component supply, consistent parametric performance, and long-term obsolescence management.
Supply support for RD30F(10)-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 formed in 2010 through the merger of NEC Electronics and Renesas Technology, specializing in microcontrollers, analog, and discrete power devices.
RD30F(10)-T6-AZ belongs to Renesas' legacy RD-series planar zener diodes, designed for general-purpose voltage regulation and transient suppression in standard-grade industrial and consumer electronics.
FAQ
What is the exact zener voltage tolerance for RD30F(10)-T6-AZ?
The RD30F(10)-T6-AZ is specified in the B3 voltage classification per Renesas datasheet D13936EJ5V0DS, with a minimum zener voltage of 29.57 V and maximum of 31.26 V at 10 mA test current - corresponding to a tolerance of ±2.8% around the nominal 30 V rating. This tighter tolerance than standard B-grade parts supports higher-precision regulation tasks.
Does RD30F(10)-T6-AZ have a specified surge current rating?
RD30F(10)-T6-AZ does not specify peak surge current directly, but its surge reverse power rating is 400 W for a 10 μs pulse at TA = 25°C. Using VZ ≈ 30 V, this implies a peak surge current of approximately 13.3 A (I = √(P/V) ≈ √(400/30)). This value is validated in Figure 7 of the official datasheet and applies only to single non-repetitive events.
Can RD30F(10)-T6-AZ be used in surface-mount designs?
No - RD30F(10)-T6-AZ uses a through-hole DO-41 axial package with radial leads and glass body, requiring hole-mounting and wave or hand soldering. It is not compatible with SMT reflow processes. For surface-mount equivalents, consider Renesas' MELF-packaged zeners (e.g., UDZSE series) or other manufacturers' SOD-123/SMA packages with comparable 30 V ratings.
What is the thermal resistance junction-to-ambient for RD30F(10)-T6-AZ?
Renesas does not publish a fixed RθJA value for RD30F(10)-T6-AZ because it depends entirely on PCB copper area. Figure 2 in datasheet D13936EJ5V0DS shows RθJA ranging from ~240°C/W (5 mm² copper) to ~80°C/W (20 mm² copper) at steady state. At 25°C ambient, full 1.0 W dissipation is only possible with ≥20 mm² of 35 μm copper foil per lead.
Is RD30F(10)-T6-AZ compliant with RoHS and lead-free assembly requirements?
Yes - RD30F(10)-T6-AZ is RoHS-compliant and lead-free, as confirmed by Renesas' environmental compliance documentation. The "-AZ" suffix in the part number explicitly denotes lead-free (Pb-free) construction per JEDEC standards. It supports reflow profiles up to 260°C peak temperature, consistent with standard SnAgCu soldering processes.
RD30F(10)-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:
- -
RD30F(10)-T6-AZ FAQ
1.How can I place an order for RD30F(10)-T6-AZ through Aetrix?
Please submit a Request for Quotation (RFQ) for RD30F(10)-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 RD30F(10)-T6-AZ reliable?
The price and inventory of RD30F(10)-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 RD30F(10)-T6-AZ is usually 5 days.
3.What payment methods are accepted for RD30F(10)-T6-AZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RD30F(10)-T6-AZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RD30F(10)-T6-AZ?
RD30F(10)-T6-AZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RD30F(10)-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 RD30F(10)-T6-AZ?
For technical support, including RD30F(10)-T6-AZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RD30F(10)-T6-AZ requirements.
6.How does Aetrix verify that RD30F(10)-T6-AZ is sourced from the original manufacturer or authorized distributors?
All RD30F(10)-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 RD30F(10)-T6-AZ meets industry standards.
7.What is the process for return or replacement of RD30F(10)-T6-AZ?
All RD30F(10)-T6-AZ units undergo pre-shipment inspection (PSI). If there is an issue with RD30F(10)-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 RD30F(10)-T6-AZ part is unused and in its original packaging.
Return procedure for RD30F(10)-T6-AZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RD30F(10)-T6-AZ Tags
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