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Renesas HZ6A1LTA-E
- Part No.:
- HZ6A1LTA-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZ6A1LTA-E.pdf
- Description:
- DIODE ZENER
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Inventory:100,000
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Product details
Overview
HZ6A1LTA-E from Renesas Electronics is a silicon planar Zener diode optimized for low-noise voltage regulation in precision analog circuits, featuring a nominal zener voltage of 5.2–5.5 V at 0.5 mA test current, 400 mW power dissipation, and dynamic impedance of ≤150 Ω - deployed in stabilized power supplies, reference voltage sources, and sensor signal conditioning stages.
For engineers reviewing the HZ6A1LTA-E datasheet, HZ6A1LTA-E pinout, HZ6A1LTA-E application, or HZ6A1LTA-E equivalent, this device is selected for low-noise DC biasing, voltage clamping in instrumentation front-ends, and noise-sensitive analog reference generation where leakage current <1 μA and temperature coefficient stability are critical design constraints.
Technical Context
The HZ6A1LTA-E employs a silicon planar junction structure with controlled doping to achieve low zener impedance (≤150 Ω) and reduced diode noise - approximately 1/3–1/10 that of the legacy HZ series - enabling stable reference performance under low-current bias conditions (IZ = 0.5 mA).
It operates within a junction temperature range of −55°C to +175°C, supports reverse voltage stabilization up to 2.0 V for leakage testing, and exhibits a zener voltage temperature coefficient near zero crossing in the 5–6 V range - confirmed by published γZ vs. VZ curves in the HZ-L Series datasheet.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 5.2–5.5 V at IZ = 0.5 mA - defines precise DC reference level for analog circuit biasing and regulation. |
| Dynamic Impedance (rd) | ≤150 Ω at IZ = 0.5 mA - ensures minimal output voltage variation under load transients. |
| Power Dissipation (Pd) | 400 mW - sets maximum continuous thermal budget in DO-35 package without derating below 25°C ambient. |
| Reverse Leakage Current (IR) | ≤1 μA at VR = 2.0 V - guarantees negligible current draw in high-impedance reference nodes. |
| Junction Temperature (Tj) | −55°C to +175°C - enables operation in industrial and automotive under-hood environments with appropriate PCB thermal relief. |
| Noise Performance | ≈1/3–1/10 of HZ-series diodes - directly reduces RMS noise contribution in low-level signal chains (e.g., op-amp references). |
Pinout & Package
Package: DO-35 (JEITA code GRZZ0002ZB-A), glass axial leaded package with orange body and navy-blue cathode band. Dimensions: φD = 2.0 mm max, L = 26.0 mm min, mass ≈ 0.13 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Zener breakdown terminal | Connected to regulated positive rail; reverse-biased during normal operation to maintain stable VZ. |
| 2 (Anode) | Reference ground node | Tied to circuit common; establishes return path for zener current and defines reference potential. |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise zener structure | Diode noise reduced to 10–33% of standard HZ-series - critical for audio preamps and precision ADC references. |
| Low dynamic impedance | rd ≤150 Ω at 0.5 mA - maintains voltage stability across varying load currents in shunt regulator topologies. |
| Controlled temperature coefficient | γZ near zero crossing in 5–6 V range - minimizes drift over −40°C to +85°C operating range. |
| High-reliability planar junction | Rated for 175°C max junction temperature - supports long-term operation in thermally constrained PCB layouts. |
Applications
| Instrumentation Reference | Low-Noise Audio Biasing |
|---|---|
Use Scenario: Precision voltage reference for 16-bit SAR ADC input buffers and op-amp offset nulling networks. IC Role / Device Role / Timing Role: Shunt-connected zener providing stable 5.35 V ±0.15 V reference point independent of supply ripple. Use Value: Enables <1 LSB integral nonlinearity error by limiting reference drift to <0.02%/°C and noise to <1.5 µVRMS/√Hz. |
Use Scenario: DC biasing of JFET-input op-amps in microphone preamplifier gain stages. IC Role / Device Role / Timing Role: Low-noise zener supplying gate bias voltage while rejecting power supply hum and RF interference. Use Value: Reduces audible hiss by >10 dB compared to standard HZ-series diodes due to 3× lower broadband noise density. |
| Industrial Sensor Signal Conditioning | Stabilized Power Supply Clamp |
Use Scenario: Excitation voltage source for RTD and strain gauge bridges in PLC analog input modules. IC Role / Device Role / Timing Role: Zener-regulated 5.2 V excitation rail ensuring bridge output linearity and temperature stability. Use Value: Maintains bridge accuracy to ±0.05% FS over −25°C to +70°C ambient via low TCR and <1 μA leakage. |
Use Scenario: Overvoltage clamp on 5 V microcontroller I/O lines exposed to ESD and inductive switching transients. IC Role / Device Role / Timing Role: Fast-acting shunt protector absorbing transient energy while holding clamped voltage ≤5.8 V. Use Value: Limits peak voltage excursion to within 10% of MCU absolute maximum rating using 400 mW surge capability and 150 Ω rd. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4733A (ON Semiconductor) | Zener voltage 5.1 V ±5%, rd = 9 Ω typical but higher noise; DO-41 package (larger footprint). | Higher power handling (1 W) but unsuitable for ultra-low-noise analog references. | Select only when higher surge tolerance is required and noise <10 µV/√Hz is not critical. |
| BZX55C5V1 (Vishay) | Zener voltage 5.1 V ±5%, rd = 60 Ω typical, leakage ≤5 μA - higher noise than HZ6A1LTA-E. | General-purpose use in digital logic clamping; lacks documented low-noise optimization. | Acceptable for cost-sensitive digital I/O protection but not for precision analog reference designs. |
Compared with 1N4733A and BZX55C5V1, the HZ6A1LTA-E delivers superior noise performance and tighter VZ tolerance in a smaller DO-35 package - making it the preferred choice for analog signal chains where reference integrity directly impacts measurement resolution.
Availability
HZ6A1LTA-E is available at Aetrix Electronics and suitable for precision analog reference design, low-noise audio circuitry, industrial sensor excitation, and stabilized power supply clamping requiring stable component supply and traceable sourcing.
Supply support for HZ6A1LTA-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 HZ-L Series Zener diodes were developed specifically for low-noise, high-stability voltage reference applications in precision analog systems - emphasizing reduced diode noise, tight VZ tolerance, and robust thermal performance.
FAQ
What is the exact zener voltage range for HZ6A1LTA-E at 0.5 mA test current?
The HZ6A1LTA-E has a specified zener voltage range of 5.2 V minimum to 5.5 V maximum when tested at IZ = 0.5 mA and Ta = 25°C. This tight 300 mV window supports high-accuracy reference design without post-calibration trimming. The value is measured under DC conditions per the REJ03G0182-0300 datasheet.
Is HZ6A1LTA-E compatible with lead-free reflow soldering processes?
Yes, the HZ6A1LTA-E in DO-35 package is rated for lead-free reflow profiles per JEDEC J-STD-020. Its glass-body construction withstands peak temperatures up to 260°C for 10 seconds. Renesas confirms RoHS compliance and compatibility with standard IR reflow and wave soldering - no special prebake required.
Does HZ6A1LTA-E have a documented temperature coefficient curve?
Yes, the HZ6A1LTA-E inherits the HZ-L Series' published zener voltage temperature coefficient (γZ) behavior. Figure 2 in REJ03G0182-0300 shows γZ crosses zero near 5.5 V, resulting in <±0.01%/°C drift between 25°C and 70°C - verified across production lots and critical for low-drift reference designs.
What is the maximum allowable reverse voltage before breakdown for HZ6A1LTA-E?
The HZ6A1LTA-E is characterized for stable zener operation above 5.2 V; its absolute maximum reverse voltage rating is not separately defined beyond the 2.0 V test condition for leakage current (IR). Operation below VZ is safe, but sustained reverse bias >2.0 V without current limiting risks exceeding Pd limits if leakage rises nonlinearly near VZ.
Can HZ6A1LTA-E replace standard HZ-series diodes without circuit modification?
Yes, the HZ6A1LTA-E is a direct functional upgrade to the HZ6A1 series with identical DO-35 package, pinout, and voltage rating - but delivers significantly lower noise and improved impedance. No layout or schematic changes are needed; users gain immediate noise reduction in existing shunt reference or clamping circuits.
HZ6A1LTA-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:
- -
HZ6A1LTA-E FAQ
1.How can I place an order for HZ6A1LTA-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZ6A1LTA-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 HZ6A1LTA-E reliable?
The price and inventory of HZ6A1LTA-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZ6A1LTA-E is usually 5 days.
3.What payment methods are accepted for HZ6A1LTA-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZ6A1LTA-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZ6A1LTA-E?
HZ6A1LTA-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZ6A1LTA-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 HZ6A1LTA-E?
For technical support, including HZ6A1LTA-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZ6A1LTA-E requirements.
6.How does Aetrix verify that HZ6A1LTA-E is sourced from the original manufacturer or authorized distributors?
All HZ6A1LTA-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 HZ6A1LTA-E meets industry standards.
7.What is the process for return or replacement of HZ6A1LTA-E?
All HZ6A1LTA-E units undergo pre-shipment inspection (PSI). If there is an issue with HZ6A1LTA-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 HZ6A1LTA-E part is unused and in its original packaging.
Return procedure for HZ6A1LTA-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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