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Renesas HZ3BLLTA-E
- Part No.:
- HZ3BLLTA-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZ3BLLTA-E.pdf
- Description:
- DIODE ZENER 0.25W
- Quantity:
- Payment:
- Shipping:
Inventory:25,000
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Product details
Overview
HZ3BLLTA-E from Renesas Electronics is a silicon planar Zener diode optimized for hard-knee, low-noise voltage reference applications at low current (IZ = 0.5 µA to 0.5 mA), with nominal Zener voltage 2.8–3.2 V, dynamic impedance 360 Ω at IZT = 1.0 mA, and temperature coefficient –0.02 to –0.04 mV/°C. It is used in precision analog front-ends and low-power sensor biasing circuits.
For engineers reviewing the HZ3BLLTA-E datasheet, HZ3BLLTA-E pinout, HZ3BLLTA-E application, or HZ3BLLTA-E equivalent, this page delivers verified electrical parameters, DO-35 package mapping, cathode/anode terminal roles, low-current noise performance data, and direct alternative options for reference design continuity.
Technical Context
The HZ3BLLTA-E employs a planar diffusion structure enabling semi-logarithmic VZ–IZ linearity from 1 nA to 1 mA, delivering sharper breakdown knees than conventional Zeners. Its low dynamic impedance (360 Ω typ. at 1 mA) and ultra-low reverse leakage (<100 nA at VR = 0.5 V) support stable regulation in micropower systems.
Designed for operation at junction temperatures up to 175°C and rated for 250 mW power dissipation, the device maintains tight Zener voltage tolerance (±0.2 V) and exhibits negative temperature coefficient behavior (–0.02 to –0.04 mV/°C), making it suitable for temperature-compensated references when paired with positive-TC components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 2.8–3.2 V at IZ = 0.5 mA - defines stable reference point for low-current bias networks |
| Dynamic Impedance (ZZT) | 360 Ω typical at IZT = 1.0 mA - ensures minimal output voltage shift under load variation |
| Reverse Current (IR) | <100 nA at VR = 0.5 V - enables ultra-low quiescent current operation in battery-powered sensors |
| Temperature Coefficient (γZ) | –0.02 to –0.04 mV/°C - supports predictable drift compensation in mixed-TC reference designs |
| Power Dissipation (Pd) | 250 mW at Ta = 25°C - sets maximum continuous DC power handling in DO-35 package |
| Junction Temperature (Tj) | 175°C maximum - allows reliable operation in high-ambient industrial environments |
Pinout & Package
Package: DO-35 (JEITA code GRZZ0002ZB-A), glass axial leaded, 2.0 mm diameter × 26.0 mm length, cathode identified by navy-blue band. Mass: 0.13 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Banded End) | Cathode | Connected to regulated output node; polarity must be observed for correct Zener conduction |
| 2 (Non-banded End) | Anode | Connected to ground or current-limiting resistor; reverse-biased configuration required |
Key Features
| Feature | Design Value |
|---|---|
| Semi-logarithmic VZ–IZ linearity | Valid from 1 nA to 1 mA - enables accurate modeling and stable regulation across 6 decades of current |
| Hard-knee breakdown | ∆VZ1 ≤ 0.5 V, ∆VZ2 ≤ 0.6 V - minimizes transition region uncertainty in low-current reference design |
| Low noise in sub-mA region | Approximately 1/10 lower than standard Zeners - reduces voltage reference jitter in precision ADCs |
| Negative temperature coefficient | –0.02 to –0.04 mV/°C - facilitates TC matching with resistors or complementary devices for zero-drift references |
Applications
| Portable Gas Sensor Biasing | Industrial RTD Excitation |
|---|---|
Use Scenario: Providing stable excitation current to metal-oxide semiconductor (MOS) gas sensing elements in battery-operated air quality monitors. IC Role / Device Role / Timing Role: Low-current Zener reference establishing fixed bias voltage for constant-current source circuitry. Use Value: Sub-100 nA reverse leakage and hard-knee behavior ensure consistent sensor response across temperature and battery discharge cycles. |
Use Scenario: Generating precise 3.0 V reference for 4-wire RTD measurement bridges in programmable logic controller (PLC) analog input modules. IC Role / Device Role / Timing Role: Primary voltage reference element in ratiometric bridge excitation path. Use Value: Tight 2.8–3.2 V tolerance and low dynamic impedance maintain bridge excitation stability despite supply ripple and PCB trace resistance. |
| Medical Wearable ECG Front-End | Automotive Cabin Temperature Sensor |
Use Scenario: Supplying low-noise bias to instrumentation amplifier input stages in disposable ECG patch electronics. IC Role / Device Role / Timing Role: Low-noise Zener reference for op-amp offset trimming and common-mode level setting. Use Value: 1/10 lower noise vs. standard Zeners directly improves signal-to-noise ratio in microvolt-level biopotential acquisition. |
Use Scenario: Calibrating thermistor-based cabin temperature sensing in automotive HVAC control units operating across –40°C to +125°C ambient range. IC Role / Device Role / Timing Role: Stable reference source for ADC reference input in microcontroller-based sensor interface. Use Value: 175°C max junction temperature rating and predictable –0.03 mV/°C TC enable robust calibration over full vehicle thermal envelope. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5223B (ON Semiconductor) | Zener voltage 3.3 V ±5%, higher dynamic impedance (600 Ω), no guaranteed low-noise spec below 1 mA | General-purpose regulation only; unsuitable for <100 nA leakage or sub-mA noise-critical use | Select only if cost sensitivity outweighs low-current precision and noise requirements |
| BZX55C3V3 (Vishay) | 3.3 V nominal, ±5% tolerance, 600 Ω ZZT, 100 nA IR at 1 V - wider VZ spread and higher impedance than HZ3BLLTA-E | Acceptable for non-critical biasing but lacks hard-knee linearity and TC consistency below 0.5 mA | Use where absolute voltage accuracy and low-noise operation are secondary to availability and footprint compatibility |
Compared with 1N5223B and BZX55C3V3, the HZ3BLLTA-E delivers tighter voltage tolerance (±0.2 V), lower dynamic impedance (360 Ω), and verified low-noise performance down to 1 nA - critical for micropower analog signal chains requiring stable, predictable reference behavior.
Availability
HZ3BLLTA-E is available at Aetrix Electronics and suitable for portable gas sensor biasing, industrial RTD excitation, and medical wearable ECG front-end designs requiring stable component supply, long-term parametric consistency, and RoHS-compliant packaging.
Supply support for HZ3BLLTA-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-LL Series was designed specifically for low-current, low-noise voltage reference applications demanding hard-knee breakdown characteristics and stable temperature behavior - targeting precision analog signal conditioning in resource-constrained systems.
FAQ
What is the Zener voltage tolerance of HZ3BLLTA-E at 0.5 mA test current?
The HZ3BLLTA-E has a specified Zener voltage range of 2.8 V to 3.2 V when measured at IZ = 0.5 mA, corresponding to a ±0.2 V absolute tolerance. This tight window supports accurate biasing in circuits where reference voltage drift must remain within 100 mV across production lots. The HZ3BLLTA-E achieves this via controlled planar diffusion and post-process screening.
Does HZ3BLLTA-E meet RoHS compliance requirements?
Yes, the HZ3BLLTA-E is RoHS-compliant per EU Directive 2011/65/EU, with lead-free terminations and halogen-free packaging materials confirmed in Renesas' official product change notices. The DO-35 glass package contains no restricted substances above threshold limits, and full material declarations are available upon request through Aetrix Electronics' technical support for HZ3BLLTA-E.
Can HZ3BLLTA-E be used in place of standard 3.3 V Zener diodes like 1N5223B?
No - the HZ3BLLTA-E is not a drop-in replacement for 1N5223B due to its lower nominal voltage (2.8–3.2 V vs. 3.3 V), tighter tolerance, and optimized low-current performance. Substituting HZ3BLLTA-E requires circuit recalibration of bias resistors and verification of noise/linearity impact. The HZ3BLLTA-E serves distinct low-noise, hard-knee applications where 1N5223B's 600 Ω impedance and ±5% tolerance are insufficient.
What is the maximum reverse leakage current for HZ3BLLTA-E at 0.5 V applied voltage?
The maximum reverse leakage current (IR) for HZ3BLLTA-E is 100 nA when tested at VR = 0.5 V and Ta = 25°C. This ultra-low leakage enables stable operation in micropower sensor interfaces and battery-backed memory retention circuits. The HZ3BLLTA-E achieves this via optimized junction geometry and surface passivation, distinguishing it from general-purpose Zeners with leakage >500 nA at same conditions.
Is HZ3BLLTA-E qualified for automotive applications?
The HZ3BLLTA-E carries Renesas' "Standard" quality grade per REJ03G0183-0300, intended for office equipment, communications gear, and industrial robots - not automotive-grade systems. It is not AEC-Q200 qualified, lacks extended temperature screening (–40°C to +125°C), and has no automotive-specific reliability testing. For automotive cabin temperature sensors or body control modules, Renesas' RAQ-series Zeners or equivalent AEC-Q200 diodes should be selected instead of HZ3BLLTA-E.
HZ3BLLTA-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:
- -
HZ3BLLTA-E FAQ
1.How can I place an order for HZ3BLLTA-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZ3BLLTA-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 HZ3BLLTA-E reliable?
The price and inventory of HZ3BLLTA-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZ3BLLTA-E is usually 5 days.
3.What payment methods are accepted for HZ3BLLTA-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZ3BLLTA-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZ3BLLTA-E?
HZ3BLLTA-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZ3BLLTA-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 HZ3BLLTA-E?
For technical support, including HZ3BLLTA-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZ3BLLTA-E requirements.
6.How does Aetrix verify that HZ3BLLTA-E is sourced from the original manufacturer or authorized distributors?
All HZ3BLLTA-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 HZ3BLLTA-E meets industry standards.
7.What is the process for return or replacement of HZ3BLLTA-E?
All HZ3BLLTA-E units undergo pre-shipment inspection (PSI). If there is an issue with HZ3BLLTA-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 HZ3BLLTA-E part is unused and in its original packaging.
Return procedure for HZ3BLLTA-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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