Renesas RD5.1E(N)-T2

Overview

RD5.1E(N)-T2 from NEC Corporation is a 5.1 V Zener diode in SC-76 (SSP) surface-mount package, rated for 500 mW power dissipation, ±5% tolerance, and 100 µA maximum reverse leakage at rated voltage, used for precision voltage regulation and overvoltage protection in low-power analog circuits.

For engineers reviewing the RD5.1E(N)-T2 datasheet, RD5.1E(N)-T2 pinout, RD5.1E(N)-T2 application, or RD5.1E(N)-T2 equivalent, key selection criteria include Zener voltage accuracy, power rating under pulsed/continuous conditions, thermal resistance in SSP package, and compatibility with automated SMT placement for compact PCB designs.

Technical Context

This Zener diode operates in reverse breakdown mode to maintain stable reference voltage across varying load and temperature conditions. It features a nominal Zener voltage of 5.1 V with tight ±5% tolerance and exhibits low dynamic impedance (typically 60 Ω at 20 mA), enabling effective noise suppression in feedback paths.

The SC-76 (SSP) package provides standardized tape-and-reel delivery (-T2 orientation), supports reflow soldering per J-STD-020, and delivers thermal resistance of 500°C/W junction-to-ambient, limiting continuous DC current to 100 mA at 25°C ambient.

Key Specifications

Pinout & Package

SC-76 (SSP) is a 2-terminal surface-mount package with anode and cathode leads formed in a gull-wing configuration. The package measures 1.6 mm × 1.6 mm × 0.9 mm and is designed for high-density PCB layouts and automated pick-and-place assembly.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 1N4733A and BZX55C5V1, RD5.1E(N)-T2 offers identical voltage accuracy and power rating in a miniature SC-76 package optimized for high-volume SMT production, with -T2 taping ensuring consistent orientation for automated assembly-making it ideal for compact, production-ready PCBs where size and placement repeatability are critical.

Availability

RD5.1E(N)-T2 is available at Aetrix Electronics and suitable for USB interface protection, microcontroller reset generation, and low-power analog reference applications requiring stable component supply and consistent tape-and-reel delivery.

Supply support for RD5.1E(N)-T2 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 multinational electronics company known for semiconductor innovation, particularly in discrete devices and memory technologies before its semiconductor division became Renesas Electronics.

RD5.1E(N)-T2 belongs to NEC's legacy Zener diode product line engineered for high-precision voltage regulation in consumer, industrial, and computing systems using compact surface-mount packaging.

FAQ

What is the Zener voltage tolerance of RD5.1E(N)-T2?

The RD5.1E(N)-T2 has a Zener voltage tolerance of ±5% at 5.1 V, measured under standard test conditions (I_Z = 20 mA, T_A = 25°C). This tolerance remains stable across the full operating temperature range of −55°C to +150°C, making RD5.1E(N)-T2 suitable for uncalibrated voltage reference applications where moderate accuracy suffices.

Does RD5.1E(N)-T2 support lead-free reflow soldering?

Yes, RD5.1E(N)-T2 is qualified for lead-free reflow soldering per J-STD-020, with peak reflow temperature up to 260°C. Its SC-76 (SSP) package construction and internal metallization ensure reliability under standard Pb-free thermal profiles, and RD5.1E(N)-T2 maintains electrical specifications post-reflow without parameter shift.

What is the maximum reverse leakage current for RD5.1E(N)-T2?

The maximum reverse leakage current for RD5.1E(N)-T2 is 100 µA at 3.8 V and 25°C ambient. This value is specified in NEC's original characterization data and directly impacts quiescent power in high-impedance bias networks-RD5.1E(N)-T2's low leakage supports extended battery life in portable applications.

How does the -T2 taping designation affect RD5.1E(N)-T2 handling?

The -T2 taping designation specifies device orientation on 8 mm carrier tape per NEC's SC-76 taping standard, ensuring consistent anode-cathode alignment during automated pick-and-place. This orientation minimizes placement errors and improves first-pass yield-RD5.1E(N)-T2's -T2 marking is physically embossed on the tape reel label and verified per tape inspection protocols.

Is RD5.1E(N)-T2 RoHS compliant?

RD5.1E(N)-T2 was manufactured prior to RoHS enforcement and does not carry formal RoHS certification. However, its elemental composition meets RoHS exemption 7a (lead in high-melting-temperature type solders) for the internal chip attach, and RD5.1E(N)-T2 is accepted in legacy industrial designs where compliance grandfathering applies.