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Home > Products > Discrete Semiconductor Products > Diodes > Zener > Single Zener Diodes

Renesas RD30S(0)-T1-AT

Name: RD30S(0)-T1-AT
Brand: Renesas
SKU: RD30S(0)-T1-AT
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: RD30S(0)-T1-AT

Manufacturer:: Renesas

Category:: Single Zener Diodes

Package:: SC-76, SOD-323

Datasheet:: RD30S(0)-T1-AT.pdf

Description:: DIODE ZENER 2-SUPER MINI MOLD

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Inventory:57,000

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Product details

Overview

RD30S(0)-T1-AT from Renesas Electronics is a 200 mW, 2-pin Super Mini Mold zener diode with a nominal zener voltage of 30 V (28.0–32.0 V), dynamic impedance of 80 Ω at 2 mA, and reverse current ≤2 μA at 23 V. It operates within –55°C to +150°C storage range and supports constant-voltage regulation in low-power analog circuits.

For engineers reviewing the RD30S(0)-T1-AT datasheet, RD30S(0)-T1-AT pinout, RD30S(0)-T1-AT application, or RD30S(0)-T1-AT equivalent, this device serves as a precision voltage reference in power supply feedback loops, overvoltage clamping in sensor interfaces, and waveform shaping in signal conditioning stages.

Technical Context

This zener diode employs a silicon planar structure optimized for sharp breakdown characteristics and stable voltage regulation under low-current conditions (IZ = 2 mA). Its E24-standardized zener voltage tolerance and low dynamic impedance ensure predictable performance in biasing and reference applications.

The device is rated for 85 W non-repetitive surge power at 10 μs pulse width and exhibits a positive zener voltage temperature coefficient (~0.07 %/°C) typical for 30 V-class zeners, enabling predictable drift behavior in ambient temperature variations.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage (V_Z)	28.0–32.0 V at I_Z = 2 mA - defines stable regulation window for mid-range voltage references.
Dynamic Impedance (Z_Z)	80 Ω max at I_Z = 2 mA - ensures minimal output voltage variation under load current changes.
Reverse Current (I_R)	≤2 μA at V_R = 23 V - guarantees low leakage in high-impedance sensing or standby circuits.
Power Dissipation (P)	200 mW at T_A = 25°C - sets maximum continuous DC power handling on standard PCB layout.
Surge Power (P_RSM)	85 W at t = 10 μs - enables transient overvoltage suppression without failure in pulse-limited events.
Junction Temperature (T_j)	150°C max - determines thermal derating curve for operation above ambient temperatures.
Package	2-pin Super Mini Mold (SOD-323 equivalent footprint) - supports high-density surface-mount assembly.

Pinout & Package

RD30S(0)-T1-AT uses a 2-pin Super Mini Mold package (equivalent to JEDEC SOD-323 outline), with cathode indicated by a band on the body. The package measures 2.5 ± 0.15 mm × 1.7 ± 0.1 mm × 1.25 ± 0.1 mm and features gull-wing leads for reflow soldering.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward conduction terminal	Connected to lower-potential node in reverse-biased zener configuration; carries forward current up to 100 mA.
Cathode	Zener breakdown terminal	Connected to higher-potential node; maintains regulated voltage drop when reverse biased above V_Z.

Key Features

Feature	Design Value
Sharp breakdown characteristic	Enables precise voltage clamping with minimal knee voltage spread across production lots.
E24-standard zener voltage grading	Ensures consistent binning and interchangeability within 28–32 V range for design reuse.
Low dynamic impedance (80 Ω)	Reduces output voltage deviation under varying load currents in reference circuits.
200 mW power rating in compact SOD-323 footprint	Supports space-constrained designs without sacrificing thermal margin in low-duty-cycle operation.
Cathode band marking	Provides unambiguous polarity identification during automated optical inspection and manual placement.

Applications

Power Supply Feedback Reference	Sensor Signal Clamping
Use Scenario: Stabilizing output voltage in linear regulator feedback networks using TL431 or discrete op-amp comparators. IC Role / Device Role / Timing Role: Zener reference element providing fixed threshold for error amplifier input. Use Value: Maintains ±1.7% regulation accuracy (28–32 V) with <80 Ω output impedance, minimizing loop gain variation.	Use Scenario: Protecting ADC inputs from transient overvoltage in industrial temperature or pressure sensors. IC Role / Device Role / Timing Role: Bidirectional clamp limiting signal swing to safe levels before analog front-end. Use Value: Absorbs 85 W surges at 10 μs without degradation, preserving downstream circuit integrity.
Waveform Shaping Circuit	Low-Power Voltage Monitor
Use Scenario: Generating clipped sine waves or square-wave harmonics in audio tone generators or test equipment. IC Role / Device Role / Timing Role: Nonlinear element defining upper/lower amplitude bounds in AC-coupled paths. Use Value: Sharp 30 V breakdown enables clean clipping edges with minimal distortion below 2 mA bias.	Use Scenario: Detecting brown-out conditions in battery-powered microcontroller systems operating near 3.3 V or 5 V rails. IC Role / Device Role / Timing Role: Threshold detector triggering reset logic via comparator input. Use Value: ≤2 μA leakage at 23 V ensures negligible quiescent current drain in always-on monitoring circuits.

Power Supply Feedback Reference

Sensor Signal Clamping

Use Scenario: Stabilizing output voltage in linear regulator feedback networks using TL431 or discrete op-amp comparators.

IC Role / Device Role / Timing Role: Zener reference element providing fixed threshold for error amplifier input.

Use Value: Maintains ±1.7% regulation accuracy (28–32 V) with <80 Ω output impedance, minimizing loop gain variation.

Use Scenario: Protecting ADC inputs from transient overvoltage in industrial temperature or pressure sensors.

IC Role / Device Role / Timing Role: Bidirectional clamp limiting signal swing to safe levels before analog front-end.

Use Value: Absorbs 85 W surges at 10 μs without degradation, preserving downstream circuit integrity.

Waveform Shaping Circuit

Low-Power Voltage Monitor

Use Scenario: Generating clipped sine waves or square-wave harmonics in audio tone generators or test equipment.

IC Role / Device Role / Timing Role: Nonlinear element defining upper/lower amplitude bounds in AC-coupled paths.

Use Value: Sharp 30 V breakdown enables clean clipping edges with minimal distortion below 2 mA bias.

Use Scenario: Detecting brown-out conditions in battery-powered microcontroller systems operating near 3.3 V or 5 V rails.

IC Role / Device Role / Timing Role: Threshold detector triggering reset logic via comparator input.

Use Value: ≤2 μA leakage at 23 V ensures negligible quiescent current drain in always-on monitoring circuits.

Equivalent & Alternatives

The following parts are listed as comparable options for similar zener diode applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
ON Semiconductor MMBZ5256BS	30 V nominal (28.5–31.5 V), 200 mW, 90 Ω Z_Z at 20 mA - higher test current shifts regulation point and increases impedance sensitivity.	Optimized for higher-current biasing; less suitable for ultra-low-leakage (<2 μA) monitoring circuits.	Select when operating at ≥5 mA and board layout allows minor thermal derating adjustments.
Vishay BZX384-C30	30 V nominal (28.5–31.5 V), 300 mW, 50 Ω Z_Z at 5 mA - higher power rating but requires 2.5× higher bias current for spec compliance.	Better suited for sustained regulation loads; not recommended for intermittent-clamp-only use cases.	Choose where long-term thermal stability under 5 mA bias outweighs low-quiescent-current requirements.

Compared with RD30S(0)-T1-AT, MMBZ5256BS demands higher bias current for specified impedance and exhibits greater leakage at sub-23 V, while BZX384-C30 offers lower impedance only at elevated current-making RD30S(0)-T1-AT optimal for low-power, precision-clamp applications requiring guaranteed ≤2 μA leakage at 23 V.

Availability

RD30S(0)-T1-AT is available at Aetrix Electronics and suitable for power supply feedback reference, sensor signal clamping, waveform shaping circuit, and low-power voltage monitor applications requiring stable component supply and long-term obsolescence management.

Supply support for RD30S(0)-T1-AT 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 RD2.0S to RD150S series was developed for general-purpose voltage regulation and protection in Standard-grade applications including office equipment, communications gear, and industrial control systems.

FAQ

What is the exact zener voltage range for RD30S(0)-T1-AT at 2 mA test current?

The RD30S(0)-T1-AT has a guaranteed zener voltage range of 28.0 V to 32.0 V when measured at I_Z = 2 mA using pulsed 40 ms testing per Renesas datasheet D11444EJ6V0DS. This 4 V span reflects E24-standard grading and ensures compatibility with designs targeting nominal 30 V regulation.

Does RD30S(0)-T1-AT meet RoHS requirements?

Yes, RD30S(0)-T1-AT complies with EU RoHS Directive requirements as confirmed by Renesas Electronics' environmental documentation. The device contains no lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls (PBB), or polybrominated diphenyl ethers (PBDE) above threshold limits.

What is the maximum allowable reverse voltage before breakdown for RD30S(0)-T1-AT?

The RD30S(0)-T1-AT maintains ≤2 μA reverse current up to 23 V, as specified in its electrical characteristics table. Operation above 23 V enters the breakdown region; sustained reverse bias beyond 32 V risks exceeding absolute maximum ratings and thermal limits.

Can RD30S(0)-T1-AT be used in automotive applications?

No-RD30S(0)-T1-AT is classified as a "Standard" quality grade device per Renesas documentation and is intended for computers, office equipment, and industrial robots. It is not qualified for automotive (AEC-Q101) or "High Quality" transportation applications without additional validation and written consent from Renesas.

What package variant does RD30S(0)-T1-AT correspond to?

RD30S(0)-T1-AT uses the 2-pin Super Mini Mold package, dimensionally equivalent to JEDEC SOD-323: 2.5 ± 0.15 mm length, 1.7 ± 0.1 mm width, and 1.25 ± 0.1 mm height, with cathode indicated by a band on the body.

RD30S(0)-T1-AT Specifications

Product attributes: Attribute value

Manufacturer:: Renesas

Series:: -

Package/Case:: SC-76, SOD-323

Packaging:: Bulk

Product Status:: Obsolete

Voltage - Zener (Nom) (Vz):: -

Tolerance:: -

Power - Max:: -

Impedance (Max) (Zzt):: -

Current - Reverse Leakage @ Vr:: -

Voltage - Forward (Vf) (Max) @ If:: -

Operating Temperature:: 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 2-Super Mini Mold

RD30S(0)-T1-AT FAQ

1.How can I place an order for RD30S(0)-T1-AT through Aetrix?

Please submit a Request for Quotation (RFQ) for RD30S(0)-T1-AT 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 RD30S(0)-T1-AT reliable?

The price and inventory of RD30S(0)-T1-AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RD30S(0)-T1-AT is usually 5 days.

3.What payment methods are accepted for RD30S(0)-T1-AT?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RD30S(0)-T1-AT transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for RD30S(0)-T1-AT?

RD30S(0)-T1-AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your RD30S(0)-T1-AT 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 RD30S(0)-T1-AT?

For technical support, including RD30S(0)-T1-AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RD30S(0)-T1-AT requirements.

6.How does Aetrix verify that RD30S(0)-T1-AT is sourced from the original manufacturer or authorized distributors?

All RD30S(0)-T1-AT 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 RD30S(0)-T1-AT meets industry standards.

7.What is the process for return or replacement of RD30S(0)-T1-AT?

All RD30S(0)-T1-AT units undergo pre-shipment inspection (PSI). If there is an issue with RD30S(0)-T1-AT, 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 RD30S(0)-T1-AT part is unused and in its original packaging.

Return procedure for RD30S(0)-T1-AT:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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