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Renesas HZ9B1L-E
- Part No.:
- HZ9B1L-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZ9B1L-E.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:3,500
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Product details
Overview
HZ9B1L-E from Renesas is a silicon planar Zener diode optimized for low-noise voltage regulation in precision analog circuits, with a nominal zener voltage of 8.3–8.7 V, 400 mW power dissipation, 60 Ω dynamic resistance at 0.5 mA test current, and DO-35 glass package. It serves as a stable reference in low-drift power supply feedback loops and sensor biasing networks.
For engineers reviewing the HZ9B1L-E datasheet, HZ9B1L-E pinout, HZ9B1L-E application, or HZ9B1L-E equivalent, key selection criteria include its verified low-noise performance (≈1/3–1/10 of standard HZ series), tight zener voltage tolerance, temperature coefficient behavior below ±0.06 %/°C in this voltage range, and suitability for DC-stabilized references requiring minimal thermal drift.
Technical Context
The HZ9B1L-E operates as a two-terminal shunt regulator with cathode-anode polarity, designed for DC-biased operation only (per datasheet Note 1). Its low dynamic impedance (60 Ω @ IZ = 0.5 mA) and low leakage support high-accuracy voltage referencing in low-current (<1 mA) analog signal chains.
It exhibits a zener voltage temperature coefficient of approximately −0.04 %/°C (−0.33 mV/°C) near 8.5 V, confirmed by Figure 2 of REJ03G0182-0300, enabling predictable thermal compensation in reference designs. The device is rated for junction temperatures up to 175°C and storage from −55°C to +175°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 8.3–8.7 V at IZ = 0.5 mA - defines stable regulation point for feedback networks |
| Dynamic Resistance (rd) | 60 Ω max at IZ = 0.5 mA - ensures minimal output voltage variation under load transients |
| Power Dissipation (Pd) | 400 mW at Ta = 25°C - sets maximum continuous DC power handling in PCB-mounted applications |
| Reverse Current (IR) | 1 μA max at VR = 2.0 V - guarantees low leakage in high-impedance bias nodes |
| Junction Temperature (Tj) | 175°C max - enables operation in thermally constrained industrial enclosures |
| Package | DO-35 glass axial - provides hermetic sealing and stable long-term parameter retention |
Pinout & Package
DO-35 glass axial package with orange body color and navy-blue cathode band. Total mass ≈ 0.13 g; lead spacing E = 4.2 mm; body diameter φD = 2.0 mm; length L = 26.0 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (banded end) | Cathode | Connected to regulated output node; sinks current to maintain VZ across load |
| 2 (non-banded end) | Anode | Connected to ground or common return; completes shunt regulation path |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise Zener operation | Diode noise level ≈1/3–1/10 that of standard HZ series - critical for audio preamps and precision ADC references |
| Tight zener voltage tolerance | ±0.2 V window (8.3–8.7 V) at 0.5 mA - reduces calibration burden in factory-trimmed systems |
| Low dynamic impedance | 60 Ω max - maintains regulation stability under varying load currents up to ~0.8 mA |
| Hermetic DO-35 packaging | Glass-sealed axial construction - ensures long-term parameter stability and moisture resistance |
Applications
| High-Precision Voltage Reference | Low-Noise Sensor Biasing |
|---|---|
Use Scenario: Providing stable excitation voltage to bridge-based pressure sensors in industrial instrumentation. IC Role / Device Role / Timing Role: Shunt voltage reference establishing fixed bias point for Wheatstone bridge output conditioning. Use Value: Low dynamic resistance (60 Ω) and low noise suppress measurement uncertainty caused by supply ripple and thermal drift. |
Use Scenario: Supplying clean bias to MEMS microphone front-end amplifiers in audio recording equipment. IC Role / Device Role / Timing Role: Low-noise DC reference source replacing higher-noise IC regulators in analog signal chain power domains. Use Value: Noise reduction by factor of 3–10 versus standard Zeners enables >90 dB SNR in microphone bias rails. |
| Stabilized Feedback Node | Calibration Reference Standard |
Use Scenario: Setting precise output voltage in adjustable linear regulators (e.g., LM317-based supplies). IC Role / Device Role / Timing Role: Zener element in resistor-divider network defining feedback threshold for error amplifier. Use Value: Tight VZ tolerance (±0.2 V) and low tempco (−0.04 %/°C) minimize output voltage drift over temperature and unit-to-unit variation. |
Use Scenario: Serving as traceable on-board reference in portable multimeters and handheld calibration tools. IC Role / Device Role / Timing Role: Primary DC voltage standard against which DMM ADCs are periodically auto-calibrated. Use Value: Hermetic DO-35 packaging and stable long-term VZ ensure calibration validity over 2+ years without recalibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C8V2 | Zener voltage 8.2 V ±5%, rd = 15 Ω typical (but not guaranteed), Pd = 350 mW, SOT-23 package | SMT-compatible but lacks low-noise characterization; no published noise spec vs. HZ9B1L-E | Select for space-constrained PCBs where noise is secondary to footprint; verify noise impact in final design. |
| 1N4736A | Zener voltage 8.2 V ±5%, rd = 5 Ω typical, Pd = 1 W, DO-41 package | Higher power rating but higher noise (no low-noise claim); larger DO-41 footprint and lower thermal stability | Select when >400 mW dissipation is required; avoid in ultra-low-noise analog stages due to unverified noise performance. |
Compared with BZX84-C8V2 and 1N4736A, the HZ9B1L-E delivers uniquely verified low-noise operation and tighter VZ control in a compact DO-35 package-making it optimal for precision analog references where noise floor and thermal drift are primary constraints.
Availability
HZ9B1L-E is available at Aetrix Electronics and suitable for high-precision voltage reference, low-noise sensor biasing, and stabilized feedback node applications requiring stable component supply and long-term parametric consistency.
Supply support for HZ9B1L-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 manufacturer specializing in microcontrollers, analog power devices, and precision timing components for industrial, automotive, and infrastructure markets.
The HZ-L Series was developed specifically for low-noise, high-stability DC voltage reference applications in analog signal conditioning and sensor interface circuits-emphasizing noise reduction, tight VZ tolerance, and long-term reliability in hermetic packages.
FAQ
What is the exact zener voltage range specified for HZ9B1L-E?
The HZ9B1L-E has a guaranteed zener voltage range of 8.3 V to 8.7 V when tested at IZ = 0.5 mA and Ta = 25°C, as documented in Table on page 2 of REJ03G0182-0300 Rev.3.00. This 0.4 V window reflects tighter control than standard Zener families and supports accurate voltage setting in feedback and reference circuits using the HZ9B1L-E.
Is HZ9B1L-E suitable for AC-coupled or transient applications?
No, the HZ9B1L-E is specified for DC operation only, as explicitly noted in the datasheet ("Tested with DC"). Its electrical characteristics-including dynamic resistance and noise-are validated under steady-state DC bias. Using the HZ9B1L-E in AC or fast-switching conditions may result in undefined behavior and is outside its qualified operating conditions.
How does the noise performance of HZ9B1L-E compare to standard Zener diodes?
The HZ9B1L-E achieves approximately 1/3 to 1/10 the noise level of the legacy HZ series, per the "Features" section of REJ03G0182-0300. This low-noise characteristic is intrinsic to its silicon planar process and is validated across the HZ-L family-making the HZ9B1L-E especially valuable in audio preamplifiers, precision ADC references, and other noise-sensitive analog functions.
What is the maximum allowable reverse current before breakdown in HZ9B1L-E?
The HZ9B1L-E specifies a maximum reverse current IR of 1 μA at VR = 2.0 V, per the Electrical Characteristics table. This low leakage ensures minimal parasitic loading in high-impedance reference nodes and contributes to stable biasing in sensor interfaces and op-amp feedback paths using the HZ9B1L-E.
Can HZ9B1L-E be used in surface-mount designs?
No-the HZ9B1L-E is packaged exclusively in the through-hole DO-35 glass axial case (RENESAS code GRZZ0002ZB-A), as confirmed on page 5 of the datasheet. It is not offered in SMT variants. For surface-mount alternatives, engineers should evaluate discrete Zener families with documented low-noise performance and compatible voltage ratings, though none match the HZ9B1L-E's specific combination of noise, tolerance, and hermetic packaging.
HZ9B1L-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:
- -
HZ9B1L-E FAQ
1.How can I place an order for HZ9B1L-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZ9B1L-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 HZ9B1L-E reliable?
The price and inventory of HZ9B1L-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZ9B1L-E is usually 5 days.
3.What payment methods are accepted for HZ9B1L-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZ9B1L-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZ9B1L-E?
HZ9B1L-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZ9B1L-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 HZ9B1L-E?
For technical support, including HZ9B1L-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZ9B1L-E requirements.
6.How does Aetrix verify that HZ9B1L-E is sourced from the original manufacturer or authorized distributors?
All HZ9B1L-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 HZ9B1L-E meets industry standards.
7.What is the process for return or replacement of HZ9B1L-E?
All HZ9B1L-E units undergo pre-shipment inspection (PSI). If there is an issue with HZ9B1L-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 HZ9B1L-E part is unused and in its original packaging.
Return procedure for HZ9B1L-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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