My Inquiry
My Account
Renesas RD30F(N)-T6
- Part No.:
- RD30F(N)-T6
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
RD30F(N)-T6.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:5,000
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
RD30F(N)-T6 from Renesas Electronics is a 1 W planar-type silicon Zener diode with a nominal zener voltage of 30 V (B grade: 29.57–31.26 V), dynamic impedance of 18 Ω at 10 mA, and temperature coefficient of +23 mV/°C. It features DO-41 glass-sealed DHD (Double Heatsink Diode) packaging, operates up to 175°C junction temperature, and is rated for 400 W surge reverse power at 10 μs pulse width. It serves as a precision voltage reference and overvoltage clamp in DC power supply regulation circuits.
For engineers reviewing the RD30F(N)-T6 datasheet, RD30F(N)-T6 pinout, RD30F(N)-T6 application, or RD30F(N)-T6 equivalent, this device is selected for stable 30 V regulation in industrial power supplies, ESD-protected sensor interfaces, and transient-suppressed I/O protection where low dynamic impedance and tight voltage tolerance are critical.
Technical Context
This Zener diode employs a planar diffusion structure with glass passivation and a double heatsink (DHD) lead frame to enhance thermal dissipation and long-term stability. Its zener voltage is specified under 40 ms test conditions at 10 mA, and its positive temperature coefficient (+23 mV/°C) indicates increasing Vz with rising temperature - a key factor when used in temperature-compensated reference designs.
The device complies with JEDEC DO-41 mechanical standards and is rated for 1 W steady-state power dissipation at 25°C ambient, derating linearly above 25°C per Figure 1 in the datasheet. Its 400 W surge rating at 10 μs enables robust transient suppression without external crowbar components in moderate-energy surge environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 29.57–31.26 V at IZ = 10 mA - defines precise clamping threshold for 30 V rail protection |
| Dynamic Impedance (ZZ) | 18 Ω max at IZ = 10 mA - ensures minimal voltage shift under load current variation |
| Power Dissipation (P) | 1.0 W at TA = 25°C - sets maximum continuous DC power handling before thermal derating |
| Junction Temperature (Tj) | −65 to +175°C - supports operation in harsh industrial environments including motor drives and factory automation |
| Surge Reverse Power (PRSM) | 400 W at t = 10 μs - provides single-pulse transient immunity compliant with IEC 61000-4-5 Level 3 |
| Reverse Current (IR) | 10 μA max at VR = 23 V - guarantees low leakage in high-impedance bias networks |
| Temperature Coefficient (γZ) | +23 mV/°C typical - enables predictable VZ drift for temperature-aware compensation schemes |
Pinout & Package
RD30F(N)-T6 uses a standard DO-41 axial glass package with cathode indicated by a black band. The device has two terminals: anode and cathode - no internal connections or multi-pin configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower potential side in reverse-biased Zener operation; carries forward current up to 200 mA |
| Cathode | Zener breakdown terminal | Marked with black band; connected to higher potential side during regulation; defines VZ reference point |
Key Features
| Feature | Design Value |
|---|---|
| Wide zener voltage range (2–82 V) | Enables standardized BOM across multiple voltage rails using same footprint and thermal profile |
| E24 series nominal values | Ensures compatibility with common resistor ladder and feedback network design practices |
| DO-41 glass-sealed DHD structure | Provides superior thermal resistance vs. plastic packages - critical for sustained 1 W operation |
| Positive temperature coefficient (+23 mV/°C) | Allows pairing with negative-coefficient devices (e.g., transistors) to achieve near-zero TC references |
| 400 W surge rating (10 μs) | Eliminates need for parallel TVS in many industrial I/O protection applications |
Applications
| Industrial Power Supply Regulation | Sensor Signal Conditioning |
|---|---|
Use Scenario: Stabilizing 30 V auxiliary rail in programmable logic controller (PLC) power modules. IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown to clamp and regulate output voltage. Use Value: Maintains ±3% output accuracy across −40°C to +85°C ambient with <18 Ω dynamic impedance limiting load-induced droop. |
Use Scenario: Protecting analog front-end inputs of 24-bit ADCs in process instrumentation. IC Role / Device Role / Timing Role: Overvoltage clamp limiting input to 30 V during ESD events or wiring faults. Use Value: Prevents ADC saturation and latch-up while adding <10 μA leakage at 23 V - preserving signal integrity. |
| Motor Drive Gate Bias Protection | Telecom Line Interface Clamping |
Use Scenario: Safeguarding isolated gate driver bias supplies in 48 V BLDC motor inverters. IC Role / Device Role / Timing Role: Shunt regulator absorbing transient energy from transformer-coupled bias windings. Use Value: Withstands repetitive 100 μs surges up to 100 W without degradation, verified per Figure 7 derating curves. |
Use Scenario: Secondary-side surge suppression on RS-485 data lines in building automation systems. IC Role / Device Role / Timing Role: Fast-response voltage limiter diverting induced lightning transients away from transceiver ICs. Use Value: 400 W peak surge capability at 10 μs meets ANSI/TIA-968-B Class B requirements without additional circuitry. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5256BRLG (onsemi) | 30 V nominal, 100 mW rating, DO-35 package, ZZ = 35 Ω @ 10 mA | Lower power and higher impedance limit use to low-current bias/reference only | Select only for space-constrained PCBs where <100 mW dissipation suffices |
| BZX85C30 (Nexperia) | 30 V nominal, 1.3 W rating, DO-41 package, ZZ = 30 Ω @ 5 mA, γZ = +25 mV/°C | Higher power but higher dynamic impedance reduces regulation precision under load | Prefer when higher surge margin is needed but tighter VZ tolerance is secondary |
Compared with RD30F(N)-T6, the 1N5256BRLG offers smaller footprint but insufficient power and regulation performance for industrial 1 W applications, while the BZX85C30 matches power and package but trades 67% higher dynamic impedance - impacting voltage stability in current-sensitive feedback loops.
Availability
RD30F(N)-T6 is available at Aetrix Electronics and suitable for industrial power supply regulation, sensor signal conditioning, and motor drive gate bias protection requiring stable component supply and long-lifecycle support.
Supply support for RD30F(N)-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.
RD30F(N)-T6 belongs to Renesas' legacy planar Zener diode family designed for high-reliability voltage regulation and transient suppression in industrial equipment - emphasizing thermal robustness, tight voltage tolerance, and surge resilience.
FAQ
What is the exact zener voltage tolerance for RD30F(N)-T6 at 10 mA test current?
The RD30F(N)-T6 has a guaranteed zener voltage range of 29.57 V to 31.26 V when measured at IZ = 10 mA and 40 ms after power-on, per the B grade specification in Renesas datasheet D13936EJ5V0DS. This ±2.7% tolerance reflects manufacturing spread within the E24 series and is validated per JEDEC test conditions.
Does RD30F(N)-T6 support surface-mount assembly?
No, RD30F(N)-T6 uses a through-hole DO-41 axial glass package with radial leads and is not compatible with SMT reflow or wave soldering processes. Its mechanical dimensions and glass body require manual or selective soldering; Renesas does not offer an SMD variant of this specific part number.
What is the maximum allowable ambient temperature for continuous 1 W operation of RD30F(N)-T6?
RD30F(N)-T6 can dissipate 1 W continuously only at TA ≤ 25°C. Above 25°C, power must be linearly derated - e.g., to ~0.5 W at 75°C - based on the thermal resistance curve in Figure 1 of the datasheet. Full 1 W operation requires heatsinking or forced-air cooling beyond 25°C ambient.
How does the +23 mV/°C temperature coefficient of RD30F(N)-T6 affect circuit stability?
The +23 mV/°C temperature coefficient means RD30F(N)-T6's zener voltage increases by approximately 23 mV per degree Celsius rise in junction temperature. In unbuffered reference designs, this causes measurable drift - e.g., +230 mV over 10°C - requiring compensation if sub-0.1% stability is required across temperature.
Is RD30F(N)-T6 RoHS compliant and lead-free?
Yes, RD30F(N)-T6 conforms to EU RoHS Directive 2011/65/EU and is lead-free. Renesas confirms compliance in environmental documentation referenced via their website (http://www.renesas.com/inquiry), and the device carries appropriate marking per JEDEC J-STD-609 classification.
RD30F(N)-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:
- -
RD30F(N)-T6 FAQ
1.How can I place an order for RD30F(N)-T6 through Aetrix?
Please submit a Request for Quotation (RFQ) for RD30F(N)-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 RD30F(N)-T6 reliable?
The price and inventory of RD30F(N)-T6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RD30F(N)-T6 is usually 5 days.
3.What payment methods are accepted for RD30F(N)-T6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RD30F(N)-T6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RD30F(N)-T6?
RD30F(N)-T6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RD30F(N)-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 RD30F(N)-T6?
For technical support, including RD30F(N)-T6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RD30F(N)-T6 requirements.
6.How does Aetrix verify that RD30F(N)-T6 is sourced from the original manufacturer or authorized distributors?
All RD30F(N)-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 RD30F(N)-T6 meets industry standards.
7.What is the process for return or replacement of RD30F(N)-T6?
All RD30F(N)-T6 units undergo pre-shipment inspection (PSI). If there is an issue with RD30F(N)-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 RD30F(N)-T6 part is unused and in its original packaging.
Return procedure for RD30F(N)-T6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RD30F(N)-T6 Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
-
MMSZ5231B-7-F
Diodes Incorporated
-
BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
-
BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
-
SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
