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Renesas HZ2HB1-E
- Part No.:
- HZ2HB1-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZ2HB1-E.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:12,500
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Product details
Overview
HZ2HB1-E from Renesas is a silicon planar Zener diode optimized for low-noise voltage regulation in precision analog circuits, featuring a nominal zener voltage of 5.6 V, 400 mW power dissipation, ≤80 Ω dynamic impedance at 0.5 mA test current, and DO-35 glass package with orange body and navy-blue cathode band. It serves as a stable reference in low-drift power supplies and sensor biasing networks.
For engineers reviewing the HZ2HB1-E datasheet, HZ2HB1-E pinout, HZ2HB1-E application, or HZ2HB1-E equivalent, key selection criteria include zener voltage tolerance (±0.3 V), temperature coefficient (−0.02 %/°C typical), low noise performance (1/3–1/10 that of standard HZ series), and compatibility with through-hole PCB assembly using DO-35 footprint.
Technical Context
The HZ2HB1-E belongs to the HZ-L Series, engineered specifically for low-noise operation via optimized silicon planar junction design and controlled diffusion processes. Its zener voltage is specified at 5.6 V (min 5.5 V, max 5.8 V) with test current IZ = 0.5 mA, and it exhibits low leakage (<1 μA at VR = 2.0 V) and low zener impedance (≤80 Ω).
This device operates within a junction temperature range of −55°C to +175°C and maintains stable regulation under DC-biased conditions. Its DO-35 package supports axial lead mounting and provides thermal dissipation suitable for ambient temperatures up to 75°C at full rated power.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 5.5 V to 5.8 V at IZ = 0.5 mA - defines precise DC reference point for feedback loops |
| Dynamic Resistance (rd) | ≤80 Ω at IZ = 0.5 mA - ensures minimal output voltage variation under load transients |
| Power Dissipation (Pd) | 400 mW - enables stable operation in compact through-hole designs without forced cooling |
| Reverse Leakage (IR) | ≤1 μA at VR = 2.0 V - reduces error current in high-impedance reference nodes |
| Temperature Coefficient (γZ) | −0.02 %/°C typical - minimizes drift over industrial temperature range (−40°C to +85°C) |
| Noise Level | ≈1/3–1/10 of standard HZ series - critical for audio preamps, ADC references, and low-level signal conditioning |
Pinout & Package
Package: DO-35 glass axial-leaded package (JEITA code GRZZ0002ZB-A), orange body with navy-blue cathode band, mass ≈0.13 g, dimensions: φD = 2.0 mm, L = 26.0 mm, E = 4.2 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Zener breakdown terminal | Connected to regulated output node; polarity must be observed to avoid forward conduction |
| 2 (Anode) | Reference ground terminal | Typically tied to circuit common; reverse-biased configuration requires anode at lower potential than cathode |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise Zener junction | Reduces broadband voltage noise by factor of 3–10 vs. legacy HZ series, improving SNR in sensitive analog stages |
| Stable low-impedance regulation | ≤80 Ω dynamic resistance enables tight regulation even with ±10% input ripple or load step changes |
| Wide operating temperature range | Junction rating up to +175°C supports use in thermally constrained enclosures or near power components |
| Precision voltage tolerance | ±0.3 V absolute zener voltage window at 0.5 mA allows predictable headroom in 5 V system references |
Applications
| Audio Signal Conditioning | Precision Sensor Biasing |
|---|---|
Use Scenario: Low-noise preamplifier stage in studio-grade microphone interface requiring ultra-low reference noise. IC Role / Device Role / Timing Role: Zener diode providing stable 5.6 V DC bias for JFET input stage and op-amp reference rails. Use Value: 1/3–1/10 lower noise vs. standard Zeners directly improves system SNR by ≥10 dB in 20 Hz–20 kHz band. |
Use Scenario: Bridge excitation supply for strain-gauge load cells in industrial weighing systems. IC Role / Device Role / Timing Role: Precision voltage reference source delivering stable 5.6 V to Wheatstone bridge with <0.01% drift over temperature. Use Value: −0.02 %/°C tempco and ≤80 Ω impedance minimize bridge offset drift and improve measurement repeatability. |
| Low-Power Analog Reference | Industrial Power Supply Regulation |
Use Scenario: Reference node for 12-bit SAR ADC in battery-powered environmental sensor node. IC Role / Device Role / Timing Role: Low-leakage (≤1 μA) Zener establishing clean 5.6 V reference independent of supply rail fluctuations. Use Value: Sub-μA leakage prevents loading of high-impedance divider networks and preserves ADC accuracy at low sampling rates. |
Use Scenario: Shunt regulator in auxiliary 5 V rail of DIN-rail mounted PLC power module. IC Role / Device Role / Timing Role: Primary voltage clamp dissipating up to 400 mW to maintain stable output under variable load conditions. Use Value: 400 mW rating and DO-35 thermal profile support continuous operation at 75°C ambient without derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4734A (ON Semiconductor) | Zener voltage 5.6 V ±5%, rd = 9 Ω (at 45 mA), higher test current, higher noise | Designed for general-purpose shunt regulation, not optimized for low-noise analog use | Prefer HZ2HB1-E where noise <1 μV/√Hz and low-tempco are required; 1N4734A suits cost-sensitive power rails |
| BZX55-C5V6 (Vishay) | Zener voltage 5.6 V ±5%, rd = 40 Ω (at 5 mA), DO-35 package, no published noise spec | General-purpose replacement; lacks documented low-noise characterization or tempco data | Acceptable for non-critical references; HZ2HB1-E preferred when datasheet-specified −0.02 %/°C and 1/3 noise reduction are mandatory |
Compared with 1N4734A and BZX55-C5V6, the HZ2HB1-E delivers uniquely specified low-noise performance and tighter voltage tolerance at low test current-enabling accurate, drift-free biasing in signal-chain applications where reference integrity directly impacts measurement fidelity.
Availability
HZ2HB1-E is available at Aetrix Electronics and suitable for precision analog reference, low-noise audio conditioning, and industrial sensor biasing applications requiring stable component supply, long-lifecycle support, and traceable Renesas manufacturing.
Supply support for HZ2HB1-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 specializing in microcontrollers, analog power devices, and timing solutions, with deep expertise in automotive, industrial, and infrastructure markets.
The HZ-L Series, including HZ2HB1-E, was developed by Renesas to address demand for ultra-low-noise, thermally stable Zener references in high-fidelity analog systems and precision measurement equipment.
FAQ
What is the exact zener voltage range for HZ2HB1-E?
The HZ2HB1-E has a guaranteed zener voltage range of 5.5 V to 5.8 V when tested at IZ = 0.5 mA and Ta = 25°C. This narrow ±0.3 V window ensures predictable regulation in 5 V system references and eliminates need for post-calibration trimming in many applications.
Does HZ2HB1-E support surface-mount assembly?
No, the HZ2HB1-E uses a DO-35 axial glass package with 2.0 mm diameter and 26 mm length, designed exclusively for through-hole PCB mounting. It is not compatible with SMT reflow or wave soldering processes due to glass envelope and axial lead geometry.
What is the maximum reverse leakage current for HZ2HB1-E?
The HZ2HB1-E specifies maximum reverse leakage current of 1 μA at VR = 2.0 V and Ta = 25°C. This low leakage preserves accuracy in high-impedance reference dividers and prevents unintended current paths in battery-powered sensor interfaces.
How does the noise performance of HZ2HB1-E compare to standard Zener diodes?
The HZ2HB1-E achieves approximately 1/3 to 1/10 the broadband noise level of conventional HZ-series Zeners, as confirmed in Renesas' REJ03G0182-0300 documentation. This is achieved via proprietary junction processing and is critical for audio, instrumentation, and high-resolution ADC applications.
Is HZ2HB1-E suitable for automotive applications?
The HZ2HB1-E is not qualified to AEC-Q101 or automotive grade standards. While its junction temperature rating extends to +175°C, Renesas explicitly states in REJ03G0182-0300 that HZ-L Series devices are not intended for safety-critical or automotive systems unless separately qualified by the customer.
HZ2HB1-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:
- -
HZ2HB1-E FAQ
1.How can I place an order for HZ2HB1-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZ2HB1-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 HZ2HB1-E reliable?
The price and inventory of HZ2HB1-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZ2HB1-E is usually 5 days.
3.What payment methods are accepted for HZ2HB1-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZ2HB1-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZ2HB1-E?
HZ2HB1-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZ2HB1-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 HZ2HB1-E?
For technical support, including HZ2HB1-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZ2HB1-E requirements.
6.How does Aetrix verify that HZ2HB1-E is sourced from the original manufacturer or authorized distributors?
All HZ2HB1-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 HZ2HB1-E meets industry standards.
7.What is the process for return or replacement of HZ2HB1-E?
All HZ2HB1-E units undergo pre-shipment inspection (PSI). If there is an issue with HZ2HB1-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 HZ2HB1-E part is unused and in its original packaging.
Return procedure for HZ2HB1-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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