My Inquiry
My Account
Renesas HZ9B2L-E
- Part No.:
- HZ9B2L-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZ9B2L-E.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:3,305
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
HZ9B2L-E from Renesas is a silicon planar Zener diode engineered for low-noise voltage regulation in precision analog circuits, with a nominal zener voltage of 8.5–8.9 V at 0.5 mA test current, 60 Ω dynamic impedance, 400 mW power dissipation, and DO-35 glass package - used in reference supplies for ADCs, sensor signal conditioning, and low-drift bias networks.
For engineers reviewing the HZ9B2L-E datasheet, HZ9B2L-E pinout, HZ9B2L-E application, or HZ9B2L-E equivalent, key selection criteria include zener voltage tolerance (±0.4 V), temperature coefficient (−0.02 %/°C at ~8.7 V), low noise performance (1/3–1/10 that of standard HZ series), and DO-35 thermal derating behavior up to 175°C junction temperature.
Technical Context
The HZ9B2L-E operates as a two-terminal shunt regulator with DC-tested zener breakdown characteristics, optimized for stable DC reference generation under low-current conditions (IZ = 0.5 mA). Its planar construction ensures reproducible voltage tolerance and reduced flicker noise versus diffused-junction alternatives.
It exhibits a negative temperature coefficient of −0.02 %/°C near its 8.7 V nominal zener point, enabling predictable drift compensation in temperature-sensitive analog stages. The device is rated for 175°C maximum junction temperature and −55°C to +175°C storage range, supporting industrial-grade reliability without hermetic sealing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 8.5–8.9 V at IZ = 0.5 mA - defines tight regulation window for 9 V nominal reference designs |
| Dynamic Resistance (rd) | 60 Ω max at IZ = 0.5 mA - ensures minimal output impedance variation under load transients |
| Power Dissipation (Pd) | 400 mW at Ta = 25°C - supports compact PCB layout with defined thermal derating above ambient |
| Zener Current (IZ) | 0.5 mA typical test condition - enables ultra-low-power reference operation in battery-backed systems |
| Reverse Leakage (IR) | 1 μA max at VR = 2.0 V - guarantees negligible quiescent current in high-impedance bias networks |
| Temperature Coefficient (γZ) | −0.02 %/°C - provides predictable, linear voltage drift for calibration-critical applications |
Pinout & Package
Package: DO-35 glass axial package (JEITA code GRZZ0002ZB-A, Renesas code SC-40), orange body with navy blue cathode band; 2.0 mm diameter, 26.0 mm length, 0.13 g mass.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Zener breakdown terminal | Connected to higher-potential rail; reverse-biased operation requires cathode at ≥ VZ relative to anode |
| 2 (Anode) | Reference ground node | Serves as circuit common; establishes stable low-impedance return path for zener current |
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 instrumentation front-ends |
| Stable low-current regulation | Specified at IZ = 0.5 mA - enables use in micropower references where current budget is <1 µA |
| Controlled temperature drift | γZ = −0.02 %/°C near 8.7 V - allows accurate drift modeling and compensation in wide-temperature-range systems |
| High-reliability planar junction | 175°C max junction temperature - supports operation in automotive under-hood and industrial control environments |
Applications
| High-Precision ADC Reference | Low-Noise Sensor Biasing |
|---|---|
Use Scenario: Providing stable 9 V reference for 16-bit SAR ADCs in data acquisition systems operating across −40°C to +85°C. IC Role / Device Role / Timing Role: Shunt voltage reference establishing precise input full-scale range and internal DAC reference. Use Value: 60 Ω dynamic impedance and −0.02 %/°C TC minimize code-width variation and offset drift over temperature and supply ripple. |
Use Scenario: Biasing bridge-based pressure sensors in medical infusion pumps requiring sub-µV noise floor. IC Role / Device Role / Timing Role: Low-noise DC excitation source for Wheatstone bridge arms. Use Value: 1/3–1/10 lower noise than standard HZ series directly reduces sensor output RMS noise by >5 µV. |
| Industrial Temperature Transmitter | Micropower RTD Excitation |
Use Scenario: Generating calibrated 8.7 V reference for 4–20 mA loop-powered transmitters in hazardous-area process control. IC Role / Device Role / Timing Role: Primary voltage reference for current-loop DAC and analog front-end gain calibration. Use Value: 400 mW power rating and DO-35 thermal profile enable reliable operation at 75°C ambient with no heatsink. |
Use Scenario: Supplying excitation current to 100 Ω Pt100 RTDs in wireless temperature nodes powered by coin cells. IC Role / Device Role / Timing Role: Ultra-low-quiescent-current shunt reference setting IEXC via series resistor. Use Value: 1 µA max reverse leakage at 2 V ensures <10 nA error contribution to 100 µA excitation current. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4737A | Zener voltage 8.2 V ±5%, rd = 7 Ω @ 20 mA, Pd = 1 W, DO-41 package | Higher power, higher test current, higher noise, larger footprint | Choose when higher current drive (>5 mA) and wider voltage tolerance acceptable |
| BZX55C8V2 | Zener voltage 8.2 V ±5%, rd = 15 Ω @ 5 mA, Pd = 500 mW, DO-35 package | Higher test current, higher noise, looser voltage tolerance, same package size | Choose when cost sensitivity outweighs low-noise and tight VZ requirements |
Compared with 1N4737A and BZX55C8V2, the HZ9B2L-E delivers tighter voltage tolerance (±0.4 V vs. ±5%), significantly lower noise, and optimized low-current regulation - making it preferred for precision analog signal chains where noise and drift dominate error budgets.
Availability
HZ9B2L-E is available at Aetrix Electronics and suitable for high-precision ADC reference, low-noise sensor biasing, and industrial temperature transmitter applications requiring stable component supply, long-term parametric consistency, and traceable manufacturing history.
Supply support for HZ9B2L-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 analog components for industrial, automotive, and infrastructure markets.
The HZ-L Series Zener diodes were designed specifically for low-noise, low-drift voltage reference applications in measurement and instrumentation systems - emphasizing repeatable VZ, minimal temperature coefficient, and industry-leading noise performance.
FAQ
What is the exact zener voltage range specified for HZ9B2L-E?
The HZ9B2L-E has a guaranteed zener voltage range of 8.5 V to 8.9 V when tested at IZ = 0.5 mA and Ta = 25°C. This ±0.4 V tolerance is tighter than standard Zener diodes and supports high-accuracy reference design without post-calibration trimming. The HZ9B2L-E achieves this specification through Renesas' planar diffusion process and rigorous binning.
Does HZ9B2L-E support operation at elevated ambient temperatures?
Yes, the HZ9B2L-E is rated for continuous operation up to 175°C junction temperature and storage from −55°C to +175°C. Its DO-35 package exhibits defined thermal derating: power dissipation decreases linearly above 25°C ambient, reaching zero at ~150°C. This makes the HZ9B2L-E suitable for under-hood automotive and industrial control cabinet applications where ambient exceeds 85°C.
How does the noise performance of HZ9B2L-E compare to standard Zener diodes?
The HZ9B2L-E delivers approximately 1/3 to 1/10 the noise level of conventional HZ-series Zeners due to its optimized planar junction structure and low-current operation. Measured noise is dominated by shot and thermal components below 10 kHz, with verified reduction in 1/f flicker noise - a key advantage in audio preamplifiers, strain-gauge bridges, and high-resolution data converters where reference noise directly limits system SNR.
What is the maximum reverse leakage current for HZ9B2L-E?
The HZ9B2L-E specifies a maximum reverse leakage current (IR) of 1 µA at VR = 2.0 V and Ta = 25°C. This ultra-low leakage enables use in high-impedance bias networks, such as op-amp input protection or capacitor-charged reference hold circuits, where even nanoamp-level currents would cause unacceptable voltage droop or settling error over time.
Is HZ9B2L-E compatible with automated PCB assembly processes?
Yes, the HZ9B2L-E uses the standard DO-35 axial package (JEITA GRZZ0002ZB-A) with 2.0 mm body diameter and 26 mm length, fully compatible with wave soldering, selective soldering, and pick-and-place equipment using axial component feeders. Its glass body and navy blue cathode band are machine-vision detectable, and the 0.13 g mass falls within standard placement accuracy tolerances for high-speed SMT lines handling discrete passives.
HZ9B2L-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:
- -
HZ9B2L-E FAQ
1.How can I place an order for HZ9B2L-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZ9B2L-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 HZ9B2L-E reliable?
The price and inventory of HZ9B2L-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZ9B2L-E is usually 5 days.
3.What payment methods are accepted for HZ9B2L-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZ9B2L-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZ9B2L-E?
HZ9B2L-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZ9B2L-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 HZ9B2L-E?
For technical support, including HZ9B2L-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZ9B2L-E requirements.
6.How does Aetrix verify that HZ9B2L-E is sourced from the original manufacturer or authorized distributors?
All HZ9B2L-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 HZ9B2L-E meets industry standards.
7.What is the process for return or replacement of HZ9B2L-E?
All HZ9B2L-E units undergo pre-shipment inspection (PSI). If there is an issue with HZ9B2L-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 HZ9B2L-E part is unused and in its original packaging.
Return procedure for HZ9B2L-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HZ9B2L-E Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
-
MMSZ5231B-7-F
Diodes Incorporated
-
BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
-
BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
-
SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
