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Renesas HZS6A3TD-E
- Part No.:
- HZS6A3TD-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZS6A3TD-E.pdf
- Description:
- DIODE ZENER 0.4W
- Quantity:
- Payment:
- Shipping:
Inventory:7,500
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Product details
Overview
HZS6A3TD-E from Renesas Electronics is a silicon planar Zener diode designed for precision voltage regulation in low-power stabilized power supplies, with a nominal zener voltage of 6.1–6.4 V, maximum power dissipation of 400 mW, dynamic resistance of 2.0 Ω at 5 mA, and operating junction temperature up to 200°C. It serves as a shunt reference in voltage monitor circuits, overvoltage clamp stages, and bias stabilization networks for analog front-ends.
For engineers reviewing the HZS6A3TD-E datasheet, HZS6A3TD-E pinout, HZS6A3TD-E application, or HZS6A3TD-E equivalent, this device is evaluated for use in industrial control power rails, sensor signal conditioning references, and embedded microcontroller reset supervision where tight voltage tolerance and low dynamic impedance are required.
Technical Context
This Zener diode operates in reverse breakdown mode with DC-tested characteristics, delivering stable regulation across ambient temperatures from −55°C to +175°C. Its low leakage current (≤5 µA at VR = 0.5 V) and low zener impedance support high-accuracy feedback paths in linear regulators and reference buffers.
The HZS6A3TD-E belongs to the HZS Series' "B" grade subgroup, specifying a zener voltage range of 6.1–6.4 V at 5 mA test current, and exhibits a negative temperature coefficient typical of mid-voltage Zeners-verified at −0.04 %/°C per datasheet Figure 2.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.1–6.4 V at IZ = 5 mA - defines regulated output level for reference and clamp functions |
| Dynamic Resistance (rd) | 2.0 Ω max at IZ = 5 mA - ensures minimal output voltage variation under load transients |
| Power Dissipation (Pd) | 400 mW max at Ta = 25°C - sets thermal design margin for PCB trace width and copper area |
| Reverse Leakage (IR) | 5 µA max at VR = 0.5 V - guarantees low quiescent current in battery-backed or ultra-low-power circuits |
| Junction Temperature (Tj) | 200°C max - enables operation in high-temperature industrial environments without derating |
| Storage Temperature | −55°C to +175°C - supports extended-range automotive and industrial storage conditions |
Pinout & Package
Package: MHD (JEITA code GRZZ0002ZC-A), axial leaded, 2.0 mm diameter glass body, 26.0 mm overall length, 5 mm pitch - optimized for high-speed automatic insertion and wave soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Regulated Output Node | Connected to positive rail in shunt regulator configuration; polarity band identifies cathode end |
| 2 (Anode) | Reference Ground Node | Tied to circuit common or ground; current flows from cathode to anode during regulation |
Key Features
| Feature | Design Value |
|---|---|
| Low Zener Impedance | 2.0 Ω max ensures <±10 mV output shift under ±10 mA load step in reference applications |
| Wide Zener Voltage Range Coverage | Part of HZS Series spanning 1.6–38 V - allows single-source selection across multiple board designs |
| High-Temperature Junction Rating | 200°C max Tj enables use in engine control units and enclosed industrial enclosures without forced cooling |
| Standardized 5 mm Pitch | Compatible with legacy pick-and-place feeders and wave solder pallets - reduces SMT line retooling cost |
Applications
| Industrial Power Monitor | Microcontroller Reset Circuit |
|---|---|
|
Use Scenario: Monitoring 12 V supply rail in PLC I/O module to detect brown-out conditions before system lockup. IC Role / Device Role / Timing Role: Shunt voltage reference providing threshold input to comparator-based supervisor IC. Use Value: Tight 6.1–6.4 V tolerance and 2.0 Ω rd minimize trip-point drift across temperature and aging. |
Use Scenario: Generating precise 6.3 V reset threshold for 3.3 V microcontroller with external reset generator. IC Role / Device Role / Timing Role: Stable reference source for reset IC's internal comparator, replacing less accurate resistor-divider networks. Use Value: Low 5 µA leakage prevents loading of weak bias sources; 400 mW rating sustains reliability during repeated power cycling. |
| Sensor Signal Conditioning | Overvoltage Clamp Stage |
|
Use Scenario: Biasing op-amp input stage in 4–20 mA transmitter to maintain common-mode voltage stability. IC Role / Device Role / Timing Role: Zener-biased current source reference ensuring consistent loop gain across supply variations. Use Value: 200°C junction rating permits placement near heat-generating transducers without derating. |
Use Scenario: Protecting ADC input from transient surges on 5 V analog bus in factory automation controller. IC Role / Device Role / Timing Role: Fast-acting shunt clamp limiting voltage to ≤6.4 V during ESD or inductive kick events. Use Value: 400 mW power handling absorbs 100 ns, 1 A surge without degradation; low rd minimizes clamping overshoot. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX55C6V2 (ON Semiconductor) | Zener voltage 6.2 V ±5%, Pd = 500 mW, rd = 10 Ω, DO-35 package | Higher dynamic resistance reduces regulation accuracy in precision references | Preferred for cost-sensitive, non-critical clamp roles where 10 Ω rd is acceptable |
| MMSZ4685 (Diodes Inc.) | Zener voltage 6.2 V ±5%, Pd = 350 mW, rd = 7 Ω, SOD-123 surface-mount | Lower power rating and SMT-only footprint limit use in through-hole or high-reliability through-hole designs | Selected when board space constraints require SMT and 350 mW suffices |
Compared with BZX55C6V2 and MMSZ4685, the HZS6A3TD-E offers superior regulation stability (2.0 Ω vs. ≥7 Ω rd) and higher junction temperature capability (200°C vs. 150°C), making it optimal for industrial-grade voltage references where long-term drift and thermal robustness are critical.
Availability
HZS6A3TD-E is available at Aetrix Electronics and suitable for industrial control systems, sensor interface modules, and embedded power management circuits requiring stable component supply, long-lifecycle availability, and RoHS-compliant sourcing.
Supply support for HZS6A3TD-E 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.
The HZS Series was developed as a family of precision silicon planar Zener diodes targeting stabilized power supply design, offering graded voltage options, low impedance, and high-temperature reliability for industrial-grade analog circuits.
FAQ
What is the exact zener voltage range specified for HZS6A3TD-E?
The HZS6A3TD-E has a guaranteed zener voltage range of 6.1 V to 6.4 V when tested at IZ = 5 mA and Ta = 25°C, corresponding to the "B" grade within the HZS6 type designation. This tolerance ensures predictable regulation behavior in feedback loops and voltage monitors without requiring post-production trimming.
Does HZS6A3TD-E support high-temperature operation beyond standard commercial ranges?
Yes, the HZS6A3TD-E is rated for junction temperatures up to 200°C and storage temperatures from −55°C to +175°C. This exceeds standard commercial-grade Zener diodes and enables deployment in engine compartments, motor drives, and sealed industrial enclosures where ambient temperatures exceed 100°C.
What package type does HZS6A3TD-E use, and is it compatible with automated assembly?
HZS6A3TD-E uses the MHD package (JEITA code GRZZ0002ZC-A), an axial-leaded glass-body diode with 5 mm lead pitch. It is explicitly qualified for high-speed automatic insertion per the datasheet, supporting compatibility with standard tape-and-reel feeders and wave solder processes without modification.
How does the dynamic resistance of HZS6A3TD-E impact its performance in voltage reference applications?
The HZS6A3TD-E specifies dynamic resistance of 2.0 Ω maximum at 5 mA, which directly limits output voltage variation under changing load current. In a reference application drawing 1 mA to 6 mA, this yields ≤10 mV total deviation-critical for ADC reference buffering and precision comparator thresholds where low rd maintains accuracy across operating conditions.
Is HZS6A3TD-E suitable for use in safety-critical or medical life-support systems?
No. Per Renesas documentation, the HZS6A3TD-E carries a "Standard" quality grade and is intended for applications including industrial robots, office equipment, and communications gear-not for aircraft, nuclear systems, or medical life-support devices. Its use in safety-critical contexts requires explicit written consent from Renesas Electronics and additional system-level validation.
HZS6A3TD-E 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:
- -
HZS6A3TD-E FAQ
1.How can I place an order for HZS6A3TD-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZS6A3TD-E 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 HZS6A3TD-E reliable?
The price and inventory of HZS6A3TD-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZS6A3TD-E is usually 5 days.
3.What payment methods are accepted for HZS6A3TD-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZS6A3TD-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZS6A3TD-E?
HZS6A3TD-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZS6A3TD-E 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 HZS6A3TD-E?
For technical support, including HZS6A3TD-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZS6A3TD-E requirements.
6.How does Aetrix verify that HZS6A3TD-E is sourced from the original manufacturer or authorized distributors?
All HZS6A3TD-E 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 HZS6A3TD-E meets industry standards.
7.What is the process for return or replacement of HZS6A3TD-E?
All HZS6A3TD-E units undergo pre-shipment inspection (PSI). If there is an issue with HZS6A3TD-E, 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 HZS6A3TD-E part is unused and in its original packaging.
Return procedure for HZS6A3TD-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HZS6A3TD-E Tags
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MM5Z5V1ST1G
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