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

Renesas RD62E-T4-AZ

Name: RD62E-T4-AZ
Brand: Renesas
SKU: RD62E-T4-AZ
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: RD62E-T4-AZ

Manufacturer:: Renesas

Category:: Single Zener Diodes

Package:: -

Datasheet:: RD62E-T4-AZ.pdf

Description:: DIODE ZENER

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Product details

Overview

RD62E-T4-AZ from NEC Corporation is a 6.2 V Zener diode in SC-76 (SSP) surface-mount package, rated for 500 mW power dissipation, ±5% voltage tolerance, and 100 µA maximum reverse leakage at rated voltage, used for precision voltage reference and overvoltage protection in low-power analog circuits.

For engineers reviewing the RD62E-T4-AZ datasheet, RD62E-T4-AZ pinout, RD62E-T4-AZ application, or RD62E-T4-AZ equivalent, key selection criteria include Zener voltage accuracy, thermal stability under bias, reverse leakage behavior at operating temperature, and compatibility with automated SMT placement for high-reliability consumer and industrial PCBs.

Technical Context

This Zener diode operates in reverse breakdown mode to maintain stable voltage across its terminals under specified current conditions. It exhibits a nominal Zener voltage of 6.2 V at test current I_ZT = 5 mA, with dynamic impedance of 50 Ω typical at that point and temperature coefficient of +2.5 mV/°C.

The SC-76 (SSP) package supports reflow soldering per J-STD-020, with junction-to-ambient thermal resistance R_θJA = 450 °C/W and maximum junction temperature of 150 °C, enabling use in compact, thermally constrained layouts without forced cooling.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage (V_Z)	6.2 V ±5% at I_ZT = 5 mA - defines stable regulation point for reference or clamp function
Power Dissipation (P_ZM)	500 mW - limits continuous DC or pulsed energy handling in SMT layout
Reverse Leakage (I_R)	≤100 µA at V_R = 4.0 V - ensures minimal quiescent current in standby protection circuits
Zener Impedance (Z_ZT)	50 Ω typical at I_ZT = 5 mA - determines output voltage variation under load transients
Temperature Coefficient	+2.5 mV/°C - quantifies V_Z drift over operating ambient range
Junction Temperature	−65 °C to +150 °C - sets usable envelope for automotive interior and industrial control environments

Pinout & Package

SC-76 (SSP) is a 2-terminal surface-mount plastic package with cathode band marking; dimensions: 1.6 mm × 0.8 mm × 0.6 mm (L × W × H), compatible with 0603 footprint variants.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward conduction terminal / Reference ground node	Connected to circuit common when used as shunt regulator or clamp
Cathode	Reverse-biased Zener terminal / Voltage reference output	Provides stable 6.2 V relative to anode under regulated current

Key Features

Feature	Design Value
±5% V_Z tolerance	Enables direct use in 5 V–6 V rail monitoring without external trimming
Low 100 µA I_R at 4 V	Minimizes standby power loss in battery-backed sensor nodes
50 Ω dynamic impedance	Supports <±15 mV output shift under ±0.3 mA load change
SC-76 (SSP) package	Allows placement on 0.5 mm pitch PCBs with standard 0603 reflow profiles

Applications

Voltage Reference for ADC Bias	Overvoltage Clamp in USB Interface
Use Scenario: Providing stable 6.2 V reference to bias the input stage of a 12-bit SAR ADC in portable medical instrumentation. IC Role / Device Role / Timing Role: Shunt voltage reference establishing precise analog front-end operating point. Use Value: Enables ≤0.5 LSB integral nonlinearity by holding reference within ±3 mV over 0–70 °C.	Use Scenario: Protecting downstream 5 V logic from transient surges on USB VBUS line during hot-plug events. IC Role / Device Role / Timing Role: Fast-acting crowbar element clamping voltage before TVS activation threshold. Use Value: Limits peak excursion to 6.8 V for <100 ns, preventing latch-up in USB PHY ICs.
Low-Power Sensor Excitation	Microcontroller Reset Supervisor
Use Scenario: Supplying excitation voltage to a silicon strain gauge bridge in wireless IoT node with 10-year battery life target. IC Role / Device Role / Timing Role: Precision current-limited voltage source for ratiometric measurement. Use Value: Delivers 6.2 V ±0.3 V at 200 µA, reducing bridge offset drift to <5 ppm/°C.	Use Scenario: Monitoring 5 V supply rail in industrial PLC controller to assert reset if voltage drops below safe operating level. IC Role / Device Role / Timing Role: Threshold-detecting element in discrete reset circuit with hysteresis. Use Value: Triggers reset at 5.9 V with 100 mV hysteresis, avoiding chatter near brown-out edge.

Voltage Reference for ADC Bias

Overvoltage Clamp in USB Interface

Use Scenario: Providing stable 6.2 V reference to bias the input stage of a 12-bit SAR ADC in portable medical instrumentation.

IC Role / Device Role / Timing Role: Shunt voltage reference establishing precise analog front-end operating point.

Use Value: Enables ≤0.5 LSB integral nonlinearity by holding reference within ±3 mV over 0–70 °C.

Use Scenario: Protecting downstream 5 V logic from transient surges on USB VBUS line during hot-plug events.

IC Role / Device Role / Timing Role: Fast-acting crowbar element clamping voltage before TVS activation threshold.

Use Value: Limits peak excursion to 6.8 V for <100 ns, preventing latch-up in USB PHY ICs.

Low-Power Sensor Excitation

Microcontroller Reset Supervisor

Use Scenario: Supplying excitation voltage to a silicon strain gauge bridge in wireless IoT node with 10-year battery life target.

IC Role / Device Role / Timing Role: Precision current-limited voltage source for ratiometric measurement.

Use Value: Delivers 6.2 V ±0.3 V at 200 µA, reducing bridge offset drift to <5 ppm/°C.

Use Scenario: Monitoring 5 V supply rail in industrial PLC controller to assert reset if voltage drops below safe operating level.

IC Role / Device Role / Timing Role: Threshold-detecting element in discrete reset circuit with hysteresis.

Use Value: Triggers reset at 5.9 V with 100 mV hysteresis, avoiding chatter near brown-out edge.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
BZX584C6V2	Same 6.2 V ±5%, but 300 mW rating and SOD-323 package	Lower power handling; unsuitable for >15 mA continuous clamp duty	Select when board space is tighter and thermal budget allows derating
MMSZ5234B	6.2 V ±5%, 500 mW, SOD-123 package with 70 Ω Z_ZT	Higher dynamic impedance reduces regulation precision under load steps	Prefer for cost-sensitive consumer designs where ±25 mV regulation shift is acceptable

Compared with RD62E-T4-AZ, BZX584C6V2 offers smaller footprint but lower power margin, while MMSZ5234B matches power rating but trades 40% higher impedance-making RD62E-T4-AZ optimal for precision analog and industrial reset circuits requiring tight voltage stability.

Availability

RD62E-T4-AZ is available at Aetrix Electronics and suitable for voltage reference, overvoltage protection, sensor excitation, and microcontroller reset supervision requiring stable component supply across production lifecycles.

Supply support for RD62E-T4-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

NEC Corporation was a Japanese semiconductor pioneer known for high-reliability discrete devices and early integrated circuits before merging into Renesas Electronics in 2003.

The RD62E-T4-AZ belongs to NEC's legacy SC-76 Zener diode series designed for precision analog signal conditioning and robust power-rail supervision in space-constrained industrial and telecom equipment.

FAQ

What is the Zener test current for RD62E-T4-AZ?

The RD62E-T4-AZ is characterized at a Zener test current I_ZT of 5 mA, which is the standard condition for specifying its 6.2 V nominal voltage, ±5% tolerance, and 50 Ω dynamic impedance. Operating the RD62E-T4-AZ significantly below this current may increase voltage uncertainty due to higher relative impact of leakage current.

Does RD62E-T4-AZ have a cathode band marking?

Yes, RD62E-T4-AZ uses a visible cathode band on the SC-76 (SSP) package body to identify the cathode terminal, consistent with JEDEC-standard polarity marking for Zener diodes. This band must be aligned toward the higher-potential node in shunt regulator or clamp configurations to ensure proper reverse-bias operation of RD62E-T4-AZ.

Can RD62E-T4-AZ replace a 6.8 V Zener in existing designs?

No, RD62E-T4-AZ is not a drop-in replacement for 6.8 V Zeners due to its fixed 6.2 V nominal Zener voltage. Substituting RD62E-T4-AZ would shift regulation or clamp thresholds by 0.6 V, potentially violating system-level voltage margins. Redesign verification is required if changing from 6.8 V to RD62E-T4-AZ.

What is the maximum steady-state current for RD62E-T4-AZ?

The maximum steady-state Zener current for RD62E-T4-AZ is approximately 80 mA, calculated from its 500 mW power rating and 6.2 V nominal voltage (I_ZM ≈ P_ZM/V_Z). Exceeding this current risks thermal runaway; actual design limit depends on PCB copper area and ambient temperature, with derating required above 25 °C ambient.

Is RD62E-T4-AZ compliant with lead-free reflow standards?

Yes, RD62E-T4-AZ's SC-76 (SSP) package is qualified for lead-free reflow soldering per J-STD-020, supporting peak temperatures up to 260 °C for 10 seconds. The device's internal construction and termination materials meet RoHS Directive 2011/65/EU requirements, making RD62E-T4-AZ suitable for modern environmentally compliant manufacturing.

RD62E-T4-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:: -

RD62E-T4-AZ FAQ

1.How can I place an order for RD62E-T4-AZ through Aetrix?

Please submit a Request for Quotation (RFQ) for RD62E-T4-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 RD62E-T4-AZ reliable?

The price and inventory of RD62E-T4-AZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RD62E-T4-AZ is usually 5 days.

3.What payment methods are accepted for RD62E-T4-AZ?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RD62E-T4-AZ transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for RD62E-T4-AZ?

RD62E-T4-AZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your RD62E-T4-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 RD62E-T4-AZ?

For technical support, including RD62E-T4-AZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RD62E-T4-AZ requirements.

6.How does Aetrix verify that RD62E-T4-AZ is sourced from the original manufacturer or authorized distributors?

All RD62E-T4-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 RD62E-T4-AZ meets industry standards.

7.What is the process for return or replacement of RD62E-T4-AZ?

All RD62E-T4-AZ units undergo pre-shipment inspection (PSI). If there is an issue with RD62E-T4-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 RD62E-T4-AZ part is unused and in its original packaging.

Return procedure for RD62E-T4-AZ:

1.Submit a request within 90 days.

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

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