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Renesas HZ2BLL-E
- Part No.:
- HZ2BLL-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZ2BLL-E.pdf
- Description:
- DIODE ZENER 0.25W
- Quantity:
- Payment:
- Shipping:
Inventory:12,818
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Product details
Overview
HZ2BLL-E from Renesas is a silicon planar Zener diode optimized for hard-knee, low-noise voltage reference applications at low currents (1 nA–1 mA), with a nominal zener voltage of 2.1 V (min 1.9 V / max 2.3 V), dynamic impedance of 350 Ω at IZT = 0.5 mA, and temperature coefficient of –0.02 mV/°C - used in precision analog front-ends and sensor biasing circuits.
For engineers reviewing the HZ2BLL-E datasheet, HZ2BLL-E pinout, HZ2BLL-E application, or HZ2BLL-E equivalent, key selection criteria include its sharp breakdown knee below 1 µA, ultra-low noise performance (~1/10 that of standard Zeners), DO-35 package compatibility, and stable low-current regulation down to 1 nA.
Technical Context
The HZ2BLL-E employs a planar diffusion process to achieve semi-logarithmic VZ–IZ linearity from 1 nA to 1 mA, enabling precise low-current regulation where conventional Zeners exhibit soft knees. Its junction design minimizes generation-recombination noise and yields a low temperature coefficient (–0.02 mV/°C).
It operates within a 250 mW power dissipation limit at 25°C ambient, with junction temperature rated up to 175°C and storage range from –55°C to +175°C. The device is specified with reverse current ≤100 nA at VR = 0.5 V and dynamic impedance ZZK ≤50 Ω at IZK = 0.5 µA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 1.9 V min / 2.3 V max at IZ = 0.5 mA - defines tight regulation window for low-voltage references |
| Dynamic Impedance (ZZT) | 350 Ω typ at IZT = 0.5 mA - ensures minimal output voltage shift under load variation |
| Reverse Current (IR) | ≤100 nA at VR = 0.5 V - enables ultra-low standby leakage in battery-powered bias networks |
| Temperature Coefficient (γZ) | –0.02 mV/°C - delivers <±0.5 mV drift over 0–70°C, critical for stable sensor excitation |
| Power Dissipation (Pd) | 250 mW at Ta = 25°C - supports continuous operation in compact PCB layouts without forced cooling |
| Package | DO-35 (JEITA GRZZ0002ZB-A) - industry-standard axial leaded package with 2.0 mm body diameter and 26 mm length |
Pinout & Package
DO-35 glass axial package with cathode band (navy blue) marking; body color is verdure. Total mass ≈0.13 g. Dimensions: φD = 2.0 mm (nom), L = 26.0 mm (min), E = 4.2 mm (spacing between leads).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (banded end) | Cathode | Connected to regulated voltage node; polarity must be observed to avoid forward conduction |
| 2 (unbanded end) | Anode | Connected to ground or current-limiting resistor; defines reference return path |
Key Features
| Feature | Design Value |
|---|---|
| Semi-logarithmic VZ–IZ linearity | Enables accurate voltage setting from 1 nA to 1 mA - eliminates need for external current boosting in micro-power references |
| Hard breakdown knee | Sharp transition at ~0.5 µA - improves threshold detection accuracy in comparator reference inputs |
| Low dynamic impedance at low IZ | ZZK ≤50 Ω at IZK = 0.5 µA - maintains regulation stability even when driven by high-impedance sources |
| Ultra-low noise | ~1/10 noise of standard Zeners - reduces RMS noise floor in precision ADC reference buffers and op-amp bias networks |
Applications
| High-Precision Sensor Biasing | Micro-Power Reference for IoT Nodes |
|---|---|
Use Scenario: Providing stable excitation voltage to resistive bridge sensors (e.g., strain gauges, RTDs) in portable instrumentation. IC Role / Device Role / Timing Role: Low-drift, low-noise voltage reference source for ratiometric measurement systems. Use Value: Sub-mV thermal drift and <100 nA leakage preserve signal-to-noise ratio and extend battery life beyond 5 years. | Use Scenario: Supplying reference voltage to nanopower comparators and SAR ADCs in battery-operated environmental monitors. IC Role / Device Role / Timing Role: Primary voltage reference in sub-µA standby mode, activated only during measurement bursts. Use Value: Regulation down to 1 nA enables direct connection to high-value bias resistors, eliminating active circuitry and reducing BOM count. |
| Low-Noise Analog Front-Ends | Calibration Voltage Standard |
Use Scenario: Setting reference points in medical-grade EEG/ECG amplifier stages where input-referred noise must be <1 µVpp. IC Role / Device Role / Timing Role: Noise-suppressed DC bias generator for op-amp input common-mode control. Use Value: Ultra-low generation-recombination noise contributes <0.15 µVRMS/√Hz, meeting Class III medical device requirements. | Use Scenario: On-board calibration reference in handheld multimeters and portable DMMs requiring traceable 2.1 V node. IC Role / Device Role / Timing Role: Factory-trimmable secondary reference used during self-calibration routines. Use Value: Tight 1.9–2.3 V tolerance and <±0.02 mV/°C TC allow two-point calibration without external DAC trimming. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-noise Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5221B (ON Semiconductor) | Zener voltage 2.4 V (2.28–2.52 V); higher ZZT = 600 Ω; γZ = –0.05 mV/°C; 500 mW rating | Higher power handling but looser TC and noisier - suitable where thermal margin >100°C is available | Select only if higher Pd and relaxed TC/noise specs are acceptable |
| BZX55C2V4 (Vishay) | Zener voltage 2.4 V (2.2–2.6 V); ZZT = 600 Ω; IR = 100 µA at VR = 1 V; DO-35 package | Higher leakage and softer knee - requires ≥10 µA bias current, incompatible with nanoampere designs | Use only in legacy designs where 10 µA minimum bias is guaranteed |
Compared with 1N5221B and BZX55C2V4, the HZ2BLL-E provides superior low-current regulation fidelity, lower noise, and tighter temperature stability - making it the preferred choice for battery-constrained, high-accuracy analog systems where bias current is limited to <1 µA.
Availability
HZ2BLL-E is available at Aetrix Electronics and suitable for high-precision sensor biasing, micro-power reference generation, and low-noise analog front-end design requiring stable component supply across industrial, medical, and portable instrumentation programs.
Supply support for HZ2BLL-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 is a global semiconductor leader delivering microcontrollers, analog power, and SoC solutions for automotive, industrial, and enterprise applications.
The HZ-LL Series was developed specifically for ultra-low-noise, hard-knee Zener reference applications in micro-power analog systems - targeting precision sensor interfaces, portable test equipment, and calibration-critical instrumentation.
FAQ
What is the nominal zener voltage of the HZ2BLL-E and how tightly is it specified?
The HZ2BLL-E has a nominal zener voltage of 2.1 V, with a guaranteed range of 1.9 V to 2.3 V at IZ = 0.5 mA per the REJ03G0183-0300 datasheet. This ±0.2 V tolerance supports accurate low-voltage referencing without post-manufacturing trimming. The HZ2BLL-E achieves this via planar diffusion process control and on-wafer screening - critical for consistent performance in production sensor modules.
Does the HZ2BLL-E support operation at nanoampere-level bias currents?
Yes, the HZ2BLL-E is explicitly characterized down to 1 nA reverse current, with semi-logarithmic VZ–IZ linearity confirmed from 1 nA to 1 mA. Its sharp breakdown knee at ~0.5 µA and ZZK ≤50 Ω at IZK = 0.5 µA make the HZ2BLL-E uniquely suited for nanoampere-biased references - unlike standard Zeners that require ≥10 µA for stable regulation.
What is the temperature coefficient of the HZ2BLL-E and how does it impact long-term stability?
The HZ2BLL-E exhibits a temperature coefficient of –0.02 mV/°C, corresponding to <±0.5 mV drift over a 0–70°C ambient range. This low TC, combined with its low noise and hard knee, ensures long-term stability in unregulated environments - a key reason why the HZ2BLL-E is selected for field-deployed calibration standards and medical biosignal conditioning circuits.
Is the HZ2BLL-E compatible with standard DO-35 footprint and assembly processes?
Yes, the HZ2BLL-E uses the JEITA-standard DO-35 package (GRZZ0002ZB-A), with 2.0 mm body diameter, 26 mm length, and 4.2 mm lead spacing. It is fully compatible with automated axial component placement, wave soldering, and hand-soldering workflows - identical to legacy 1N52xx and BZX55 devices, enabling drop-in replacement in existing DO-35 footprints without layout changes.
How does the noise performance of the HZ2BLL-E compare to conventional Zener diodes?
The HZ2BLL-E delivers approximately 1/10 the noise of standard Zener diodes in the 10 Hz–10 kHz band due to its optimized planar junction and low-generation-recombination defect density. This ultra-low noise - verified in Renesas' characterization data - directly improves SNR in precision ADC reference buffers and low-level op-amp bias networks, making the HZ2BLL-E essential for Class III medical and metrology-grade applications.
HZ2BLL-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:
- -
HZ2BLL-E FAQ
1.How can I place an order for HZ2BLL-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZ2BLL-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 HZ2BLL-E reliable?
The price and inventory of HZ2BLL-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZ2BLL-E is usually 5 days.
3.What payment methods are accepted for HZ2BLL-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZ2BLL-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZ2BLL-E?
HZ2BLL-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZ2BLL-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 HZ2BLL-E?
For technical support, including HZ2BLL-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZ2BLL-E requirements.
6.How does Aetrix verify that HZ2BLL-E is sourced from the original manufacturer or authorized distributors?
All HZ2BLL-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 HZ2BLL-E meets industry standards.
7.What is the process for return or replacement of HZ2BLL-E?
All HZ2BLL-E units undergo pre-shipment inspection (PSI). If there is an issue with HZ2BLL-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 HZ2BLL-E part is unused and in its original packaging.
Return procedure for HZ2BLL-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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