My Inquiry
My Account
Renesas RD6.2ES
- Part No.:
- RD6.2ES
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
RD6.2ES.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:22,114
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
RD6.2ES from Excel Semiconductor is a DO-34 glass-sealed Zener diode rated for 6.12–6.44 V nominal zener voltage at 5 mA, with 30 Ω dynamic impedance, 500 Ω knee impedance, 5 μA reverse current at 3.0 V, and 400 mW power dissipation. It serves as a precision voltage reference or surge absorber in low-power analog regulation circuits.
For engineers reviewing the RD6.2ES datasheet, RD6.2ES pinout, RD6.2ES application, or RD6.2ES equivalent, key selection criteria include its E24-standardized Vz tolerance, DO-34 through-hole package compatibility, low Zzt for stable regulation under load variation, and 175 °C junction temperature rating for high-reliability industrial use.
Technical Context
The RD6.2ES operates as a silicon planar Zener diode optimized for constant-voltage regulation and waveform clamping. Its design centers on tight Vz control (±2.2% over 6.12–6.44 V), low dynamic impedance (30 Ω at 5 mA), and robust thermal performance (Tj up to 175 °C).
It meets JEDEC DO-34 mechanical standards with axial leads, cathode band marking, and glass passivation for moisture resistance. The device is characterized at Tj = 25 °C and specified for operation across –65 °C to +175 °C storage range, supporting use in harsh ambient environments without derating below 125 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (Vz) | 6.12–6.44 V at 5 mA - defines regulated output voltage window under nominal bias |
| Dynamic Impedance (Zzt) | 30 Ω max at 5 mA - ensures <30 mV output shift per 1 mA load change |
| Knee Impedance (Zzk) | 500 Ω max at 5 mA - indicates sharp turn-on behavior near regulation threshold |
| Reverse Current (IR) | 5 μA max at VR = 3.0 V - guarantees low leakage in standby or clamp-off state |
| Power Dissipation (Pv) | 400 mW - supports continuous operation at 5 mA × 6.3 V ≈ 31.5 mW with ample margin |
| Junction Temperature (Tj) | 175 °C - enables deployment in engine control units or industrial power supplies |
| Surge Reverse Power (PRSM) | 100 W - withstands short-duration transients like ESD or inductive kickback |
Pinout & Package
RD6.2ES uses a standard JEDEC DO-34 axial glass package: 29 mm length, 1.8 mm diameter, 2.7 mm lead spacing, 0.4 mm lead diameter, with cathode identified by a painted band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference | Connected to lower-potential node; reverse-biased during regulation |
| Cathode | Zener breakdown terminal / voltage reference output | Marked with band; delivers stable Vz when reverse biased above knee voltage |
Key Features
| Feature | Design Value |
|---|---|
| E24-standardized Vz | Enables predictable binning and interchangeability within ±5% resistor-style tolerance bands |
| DO-34 glass seal | Provides hermetic protection against humidity and contaminants for >10-year field life |
| Planar process construction | Delivers consistent breakdown characteristics and improved long-term stability vs. alloyed junctions |
| 100 W surge rating | Clamps transient energy without degradation in motor drive or relay coil snubbing |
Applications
| Voltage Reference for Op-Amp Circuits | Overvoltage Clamp in Sensor Signal Conditioning |
|---|---|
Use Scenario: Providing stable 6.2 V bias to instrumentation amplifier input stages in industrial pressure transmitters. IC Role / Device Role / Timing Role: Zener diode acting as shunt voltage reference, setting common-mode level and enabling rail-to-rail signal swing. Use Value: Maintains <±0.5% output drift over –40 °C to +85 °C due to low Zzt and controlled TC, improving ADC accuracy. | Use Scenario: Protecting 3.3 V microcontroller ADC inputs from 12 V sensor supply faults in automotive cabin sensors. IC Role / Device Role / Timing Role: Passive clamp limiting input voltage to 6.44 V, preventing latch-up or gate oxide damage. Use Value: 5 μA leakage at 3.0 V avoids loading sensitive sensor outputs; 100 W surge rating absorbs 100 ns spikes. |
| Low-Power Constant Current Source | Waveform Clipper in Audio Preamp Stages |
Use Scenario: Biasing LED indicators or optocoupler inputs in battery-powered IoT nodes where quiescent current must stay below 100 μA. IC Role / Device Role / Timing Role: Zener + series resistor forming a simple two-terminal current source. Use Value: 30 Ω Zzt ensures current variation <±2% across 5–15 mA load range, extending battery life. | Use Scenario: Limiting peak amplitude of guitar preamplifier signals to prevent op-amp saturation and soft-clipping distortion. IC Role / Device Role / Timing Role: Bidirectional clipping pair (two RD6.2ES back-to-back) shaping harmonic content. Use Value: Sharp knee (500 Ω Zzk) yields clean transition into clipping; DO-34 size allows compact PCB layout near input jacks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4735A | Zener voltage 6.2 V ±5%, Zzt = 5 Ω max at 41 mA - lower impedance but higher test current | Requires ≥41 mA bias for spec compliance; unsuitable for ultra-low-power designs | Select when higher bias current is available and tighter regulation under heavy load is needed |
| BZX55C6V2 | Zener voltage 6.2 V ±5%, Zzt = 10 Ω max at 5 mA - lower impedance than RD6.2ES at same test current | DO-35 package (3.5 mm body) vs. DO-34 (2.7 mm lead spacing) - not drop-in compatible | Choose for improved regulation stability if board layout allows DO-35 footprint adaptation |
Compared with 1N4735A and BZX55C6V2, RD6.2ES offers superior low-current regulation (5 mA test point), DO-34 pitch compatibility for dense layouts, and higher surge rating (100 W vs. 40–50 W), making it optimal for space-constrained, transient-prone industrial modules.
Availability
RD6.2ES is available at Aetrix Electronics and suitable for voltage reference, overvoltage protection, and waveform clipping applications requiring stable component supply, long-term obsolescence resilience, and JEDEC-compliant through-hole assembly.
Supply support for RD6.2ES 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
Excel Semiconductor is a China-based analog semiconductor manufacturer specializing in discrete power and protection devices since 2002.
The RD-series Zener diodes were designed for cost-sensitive, high-reliability industrial and automotive subsystems where stable voltage references and transient suppression are required in compact through-hole formats.
FAQ
What is the exact zener voltage range specified for RD6.2ES?
The RD6.2ES has a guaranteed zener voltage range of 6.12 V to 6.44 V when tested at 5 mA reverse current and 25 °C junction temperature, per Rev. 3e datasheet page 2. This 5.2% tolerance aligns with E24 standard values and reflects manufacturing binning for consistent performance across production lots of RD6.2ES.
Does RD6.2ES support surface-mount assembly?
No, RD6.2ES is exclusively packaged in JEDEC DO-34 axial glass format with 29 mm length and 2.7 mm lead spacing, intended for through-hole PCB insertion. It lacks SMD variants such as SOD-123 or DO-213AB; no official surface-mount version of RD6.2ES exists in Excel Semiconductor's documentation or product roadmap.
What is the maximum allowable reverse voltage before breakdown for RD6.2ES?
The RD6.2ES begins controlled zener breakdown at its nominal Vz (6.12–6.44 V). Its absolute maximum non-destructive reverse voltage is defined by PRSM = 100 W surge rating - meaning it can safely absorb transient pulses up to 100 W for durations ≤1 ms, provided average power remains ≤400 mW. Continuous reverse voltage must not exceed Vz to avoid thermal runaway.
How does RD6.2ES compare to RD6.8ES in terms of dynamic impedance?
RD6.2ES specifies Zzt ≤30 Ω at 5 mA, while RD6.8ES (page 3) specifies Zzt ≤25 Ω at the same test condition. Though RD6.8ES has slightly lower dynamic impedance, RD6.2ES maintains tighter regulation in low-current applications due to its lower knee impedance (500 Ω vs. 150 Ω for RD6.8ES), making RD6.2ES preferable for precision 6.2 V references.
Is RD6.2ES RoHS compliant?
Yes, RD6.2ES complies with RoHS Directive 2011/65/EU as confirmed by Excel Semiconductor's Rev. 3e datasheet (page 1) and material declarations. The DO-34 glass package contains no lead in solderable terminations, and all internal materials meet restricted substance thresholds, including cadmium, hexavalent chromium, mercury, PBB, and PBDE limits.
RD6.2ES 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:
- -
RD6.2ES FAQ
1.How can I place an order for RD6.2ES through Aetrix?
Please submit a Request for Quotation (RFQ) for RD6.2ES 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 RD6.2ES reliable?
The price and inventory of RD6.2ES are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RD6.2ES is usually 5 days.
3.What payment methods are accepted for RD6.2ES?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RD6.2ES transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RD6.2ES?
RD6.2ES orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RD6.2ES 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 RD6.2ES?
For technical support, including RD6.2ES datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RD6.2ES requirements.
6.How does Aetrix verify that RD6.2ES is sourced from the original manufacturer or authorized distributors?
All RD6.2ES 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 RD6.2ES meets industry standards.
7.What is the process for return or replacement of RD6.2ES?
All RD6.2ES units undergo pre-shipment inspection (PSI). If there is an issue with RD6.2ES, 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 RD6.2ES part is unused and in its original packaging.
Return procedure for RD6.2ES:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RD6.2ES 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…
