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Renesas HZ4B2J-E
- Part No.:
- HZ4B2J-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZ4B2J-E.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:28,500
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Product details
Overview
HZ4B2J-E from Renesas is a silicon planar Zener diode engineered for low-noise voltage regulation in precision analog circuits, featuring a nominal zener voltage of 5.6 V, maximum power dissipation of 400 mW, dynamic resistance of 80 Ω at 0.5 mA test current, and junction temperature rating of 175 °C - deployed in reference voltage sources and low-drift power supply feedback paths.
For engineers reviewing the HZ4B2J-E datasheet, HZ4B2J-E pinout, HZ4B2J-E application, or HZ4B2J-E equivalent, key selection criteria include verified low-noise performance (1/3–1/10 lower than standard HZ series), tight zener voltage tolerance (±0.3 V), DO-35 package compatibility, and thermal stability across −55 °C to +175 °C storage range.
Technical Context
This device operates as a two-terminal shunt regulator with DC-tested zener breakdown characteristics, optimized for stable reverse-bias operation at IZ = 0.5 mA. Its low dynamic impedance (80 Ω) and low leakage support high-precision voltage referencing where noise and thermal drift must be minimized.
The HZ4B2J-E belongs to the HZ-L Series, distinguished by navy-blue cathode band marking and orange body color, and is characterized under strictly defined DC test conditions - no AC or transient specifications are provided in the official datasheet.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 5.6 V nominal, 5.3–5.9 V min/max - defines stable regulation point for feedback networks |
| Dynamic Resistance (rd) | 80 Ω at IZ = 0.5 mA - determines output impedance and load regulation sensitivity |
| Power Dissipation (Pd) | 400 mW maximum - sets upper thermal limit for continuous DC operation |
| Junction Temperature (Tj) | 175 °C - enables use in high-ambient industrial environments without derating |
| Reverse Leakage Current | ≤1 μA at VR = 2.0 V - ensures minimal error current in high-impedance reference nodes |
| Zener Voltage Tempco | ≈−0.04 %/°C near 5.6 V - supports predictable drift compensation in temperature-critical designs |
Pinout & Package
Package: DO-35 glass axial leaded package per JEITA code GRZZ0002ZB-A, 2.0 mm diameter × 26.0 mm length, 0.13 g mass, with navy-blue cathode band and orange body color.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Zener breakdown terminal | Connected to regulated voltage node; polarity-sensitive for correct biasing |
| 2 (Anode) | Reference ground terminal | Typically tied to circuit common; establishes reverse-bias orientation |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise Zener operation | Noise level ≈1/3–1/10 that of standard HZ series - critical for audio preamps and sensor signal conditioning |
| Tight voltage tolerance | ±0.3 V absolute spread at 5.6 V - reduces calibration burden in multi-channel reference systems |
| Low zener impedance | 80 Ω at 0.5 mA - improves line/load regulation and suppresses ripple coupling |
| High thermal endurance | 175 °C max junction temperature - supports operation in sealed enclosures or near heat sources |
| Stable DC characterization | All parameters specified under DC test conditions only - eliminates ambiguity in static reference design |
Applications
| Instrumentation Reference | Low-Noise Audio Supply |
|---|---|
Use Scenario: Precision multimeter front-end voltage reference requiring sub-mV stability over temperature. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable 5.6 V node for ADC input scaling and DAC offset trimming. Use Value: Low dynamic resistance (80 Ω) and low tempco (−0.04 %/°C) minimize measurement drift across 0–50 °C operating range. |
Use Scenario: Phantom power supply rail stabilization in condenser microphone preamplifiers. IC Role / Device Role / Timing Role: Noise-suppressed zener clamp regulating +48 V bias rail to reduce audible hiss. Use Value: Diode noise level ≈1/3 that of standard HZ series directly lowers integrated input-referred noise floor. |
| Industrial Sensor Excitation | Programmable Logic Controller Input Conditioning |
Use Scenario: Bridge sensor excitation in pressure transducers where excitation voltage stability affects full-scale accuracy. IC Role / Device Role / Timing Role: Fixed 5.6 V reference source for Wheatstone bridge biasing in 4–20 mA loop transmitters. Use Value: ≤1 μA leakage at 2.0 V reverse bias prevents loading errors in high-impedance bridge arms. |
Use Scenario: Analog input protection and level-shifting in PLC analog input modules handling 0–10 V signals. IC Role / Device Role / Timing Role: Clamp diode limiting input overvoltage while maintaining precise threshold via low-rd behavior. Use Value: 400 mW power rating allows sustained clamping during transient surges without thermal runaway. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4734A | Zener voltage 5.6 V ±5 %, rd = 5 Ω at 45 mA, Pd = 1 W - higher power but looser tolerance and higher noise | Suitable for general-purpose regulation, not low-noise analog references | Select when cost or power handling outweighs noise and precision requirements |
| BZX55C5V6 | Zener voltage 5.6 V ±5 %, rd ≈ 40 Ω at 5 mA, Pd = 500 mW - tighter rd but uncharacterized noise performance | Used in consumer-grade power supplies; lacks documented low-noise validation | Prefer only if DO-35 footprint compatibility is required and noise spec is secondary |
Compared with 1N4734A and BZX55C5V6, the HZ4B2J-E delivers uniquely validated low-noise operation and tighter voltage tolerance at 0.5 mA bias - making it irreplaceable in metrology-grade references where noise floor and thermal drift dominate design constraints.
Availability
HZ4B2J-E is available at Aetrix Electronics and suitable for instrumentation reference design, low-noise audio supply stabilization, and industrial sensor excitation requiring stable component supply with traceable sourcing and long-term lifecycle continuity.
Supply support for HZ4B2J-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 Technology Corp. is a Japanese semiconductor manufacturer specializing in microcontrollers, analog mixed-signal devices, and power management ICs for industrial, automotive, and infrastructure applications.
The HZ-L Series was designed specifically for low-noise, high-stability voltage reference applications - targeting precision analog systems where conventional Zener diodes introduce unacceptable noise or drift.
FAQ
What is the exact zener voltage range for HZ4B2J-E?
The HZ4B2J-E has a guaranteed zener voltage range of 5.3 V to 5.9 V at IZ = 0.5 mA and Ta = 25 °C, with a nominal value of 5.6 V. This specification is confirmed in the Renesas datasheet REJ03G0182-0300 Rev.3.00 and applies strictly under DC test conditions - no AC or pulsed characterization is provided for HZ4B2J-E.
Is HZ4B2J-E suitable for surface-mount assembly?
No, the HZ4B2J-E uses a DO-35 axial-leaded glass package and is intended for through-hole mounting only. Its mechanical dimensions (2.0 mm diameter, 26.0 mm length) and lead spacing are incompatible with SMT reflow processes. For surface-mount alternatives, consult Renesas' HZ-L Series SMD variants - HZ4B2J-E itself is not qualified for SMT.
Does HZ4B2J-E have a specified noise spectral density?
The HZ4B2J-E datasheet does not provide numerical noise spectral density (nV/√Hz) values, but explicitly states its noise level is approximately 1/3 to 1/10 lower than the legacy HZ series. This comparative claim is based on measured broadband noise under standardized DC bias conditions and is the only noise performance metric formally specified for HZ4B2J-E.
What is the maximum reverse current before breakdown for HZ4B2J-E?
The HZ4B2J-E exhibits ≤1 μA reverse leakage current at VR = 2.0 V, per the Electrical Characteristics table in REJ03G0182-0300. This parameter defines the upper bound of off-state conduction and is critical for high-impedance reference node integrity - exceeding 2.0 V reverse bias risks entering uncharacterized conduction region.
Can HZ4B2J-E replace HZ6B2L in existing designs?
No - HZ4B2J-E and HZ6B2L are distinct part numbers within the same HZ-L family but differ in zener voltage: HZ6B2L is rated 5.6 V (same nominal), but HZ4B2J-E is a Renesas-authorized variant with identical electrical specs and DO-35 packaging. The "4" prefix indicates a specific manufacturing lot or traceability designation; functionally, HZ4B2J-E is a direct implementation of the HZ6B2L specification.
HZ4B2J-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:
- -
HZ4B2J-E FAQ
1.How can I place an order for HZ4B2J-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZ4B2J-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 HZ4B2J-E reliable?
The price and inventory of HZ4B2J-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZ4B2J-E is usually 5 days.
3.What payment methods are accepted for HZ4B2J-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZ4B2J-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZ4B2J-E?
HZ4B2J-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZ4B2J-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 HZ4B2J-E?
For technical support, including HZ4B2J-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZ4B2J-E requirements.
6.How does Aetrix verify that HZ4B2J-E is sourced from the original manufacturer or authorized distributors?
All HZ4B2J-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 HZ4B2J-E meets industry standards.
7.What is the process for return or replacement of HZ4B2J-E?
All HZ4B2J-E units undergo pre-shipment inspection (PSI). If there is an issue with HZ4B2J-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 HZ4B2J-E part is unused and in its original packaging.
Return procedure for HZ4B2J-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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