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Renesas HZ5B2J-E
- Part No.:
- HZ5B2J-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZ5B2J-E.pdf
- Description:
- DIODE ZENER 0.5W
- Quantity:
- Payment:
- Shipping:
Inventory:5,000
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Product details
Overview
HZ5B2J-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 resistance at 0.5 mA test current, DO-35 glass package, and cathode band marking. It serves as a stable reference in low-drift power supplies and sensor biasing networks.
For engineers reviewing the HZ5B2J-E datasheet, HZ5B2J-E pinout, HZ5B2J-E application, or HZ5B2J-E equivalent, key selection criteria include zener voltage tolerance (±0.3 V), low noise performance relative to standard HZ series, thermal coefficient behavior below 7 V, and compatibility with through-hole PCB assembly using DO-35 footprint.
Technical Context
The HZ5B2J-E operates as a two-terminal shunt regulator with DC-tested zener breakdown at 5.6 V ±0.3 V under 0.5 mA current. Its low dynamic impedance (80 Ω max) and reduced noise level-approximately 1/3 to 1/10 that of the legacy HZ series-enable high-stability references in sensitive analog front-ends.
Designed for ambient temperatures from −55°C to +175°C, it maintains specified electrical characteristics within its absolute maximum ratings: 400 mW power dissipation and 175°C junction temperature. The DO-35 package supports manual or automated through-hole insertion with standardized 2.0 mm body diameter and 26 mm lead length.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 5.6 V nominal, min 5.3 V / max 5.9 V at IZ = 0.5 mA - defines precise regulation point for low-drift references |
| Dynamic Resistance (rd) | 80 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 thermal derating limit for PCB layout and heatsinking |
| Reverse Current (IR) | 1 μA max at VR = 2.0 V - guarantees low leakage in high-impedance bias networks |
| Junction Temperature (Tj) | 175°C maximum - enables operation in industrial and automotive under-hood environments |
| Package | DO-35 glass axial - provides hermetic sealing and proven reliability for long-term voltage stability |
Pinout & Package
DO-35 glass axial package with orange body color and navy blue cathode band. Leads are tinned copper-clad steel, 26 mm long, 0.5 mm diameter.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Zener breakdown terminal | Connected to regulated positive rail; reverse-biased during normal operation |
| 2 (Anode) | Reference ground terminal | Connected to circuit common; establishes reference potential for voltage stabilization |
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 precision ADC references |
| Stable low-voltage regulation | 5.6 V ±0.3 V tolerance with <0.1 %/°C tempco below 7 V - minimizes drift in temperature-sensitive instrumentation |
| High-reliability glass package | DO-35 hermetic construction with 0.13 g mass - ensures long-term parameter stability and moisture resistance |
| Low leakage performance | 1 μA max reverse current at 2.0 V - preserves accuracy in high-Z feedback and bias networks |
Applications
| Instrumentation Reference | Audio Signal Conditioning |
|---|---|
Use Scenario: Precision voltage reference for 16-bit SAR ADC front-end in portable multimeters. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable 5.6 V bias to op-amp input stage and ADC reference buffer. Use Value: Low dynamic resistance (80 Ω) and ultra-low noise suppress quantization error and improve effective number of bits (ENOB). | Use Scenario: DC bias generator for JFET-input op-amps in high-fidelity microphone preamplifiers. IC Role / Device Role / Timing Role: Low-noise zener source establishing quiet, stable gate bias voltage independent of supply ripple. Use Value: Noise reduction vs. standard HZ series directly lowers audible hiss floor and improves signal-to-noise ratio by >10 dB. |
| Industrial Sensor Excitation | Programmable Power Supply Feedback |
Use Scenario: Excitation voltage source for platinum RTD bridges in factory-floor temperature transmitters. IC Role / Device Role / Timing Role: Stable 5.6 V reference driving constant-current source for 4-wire RTD measurement. Use Value: Tight zener tolerance (±0.3 V) and low tempco ensure <0.05 % full-scale error over −40°C to +85°C operating range. | Use Scenario: Secondary-side voltage sense element in isolated 5 V/3 A flyback power supply with optocoupler feedback. IC Role / Device Role / Timing Role: Zener clamping node defining regulated output voltage via TL431 comparator input divider. Use Value: 400 mW rating allows robust operation under transient overload without degradation, supporting 10-year field reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar zener diode voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4734A | Zener voltage 5.6 V ±5 % (±0.28 V), 1 Ω typical rd, 1 W Pd, DO-41 package | Higher power, looser tolerance, higher noise - suitable for non-critical regulation but not low-noise analog refs | Select HZ5B2J-E when noise, tight tolerance, or DO-35 footprint are mandatory; choose 1N4734A only for cost-sensitive, high-power bulk regulation. |
| BZX55C5V6 | Zener voltage 5.6 V ±5 %, 60 Ω rd max at 5 mA, 500 mW Pd, DO-35 package | Higher test current (5 mA vs. 0.5 mA), higher noise, wider tolerance - lacks documented low-noise optimization | Use BZX55C5V6 if higher test-current operation is required; retain HZ5B2J-E where sub-μA leakage and ultra-low noise at low IZ are essential. |
Compared with 1N4734A and BZX55C5V6, the HZ5B2J-E delivers tighter voltage tolerance (±0.3 V), verified low-noise performance, and guaranteed 0.5 mA operating point suitability-making it uniquely suited for precision analog reference design where parameter stability and spectral purity are non-negotiable.
Availability
HZ5B2J-E is available at Aetrix Electronics and suitable for instrumentation reference, audio signal conditioning, and industrial sensor excitation requiring stable component supply, long-term parametric consistency, and RoHS-compliant through-hole sourcing.
Supply support for HZ5B2J-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 timing solutions for industrial, automotive, and infrastructure markets.
The HZ-L Series was developed specifically for low-noise, high-stability voltage reference applications in precision analog systems-emphasizing reduced diode noise, tight zener voltage control, and robust thermal performance in compact DO-35 packaging.
FAQ
What is the exact zener voltage range for HZ5B2J-E at 0.5 mA test current?
The HZ5B2J-E has a specified zener voltage range of 5.3 V minimum to 5.9 V maximum when tested at IZ = 0.5 mA and Ta = 25°C. This ±0.3 V tolerance reflects tight process control for precision reference use, distinct from broader-tolerance alternatives like 1N4734A (±5 %). The HZ5B2J-E datasheet confirms this range on page 2 of REJ03G0182-0300 Rev.3.00.
Does HZ5B2J-E support operation above 100°C ambient temperature?
Yes, the HZ5B2J-E is rated for storage and operation from −55°C to +175°C. Its junction temperature limit is 175°C, and derated power dissipation remains functional up to at least +125°C ambient when mounted on standard FR-4 PCB with adequate copper area. The HZ5B2J-E thermal data in Figure 3 (page 4) shows usable Pd down to ~200 mW at 100°C ambient, confirming suitability for industrial control modules.
How does the noise performance of HZ5B2J-E compare to standard zener diodes?
The HZ5B2J-E achieves approximately 1/3 to 1/10 the noise level of the legacy HZ series, as stated in the "Features" section of its datasheet. This low-noise characteristic is intrinsic to the HZ-L Series' silicon planar process and is validated for analog applications such as ADC references and audio biasing. Unlike generic zeners, the HZ5B2J-E's noise specification is explicitly quantified-not inferred-and applies directly to the HZ5B2J-E variant.
Is HZ5B2J-E compatible with automated through-hole assembly equipment?
Yes, the HZ5B2J-E uses the industry-standard DO-35 package with 26 mm straight leads, 0.5 mm diameter, and consistent 2.0 mm body diameter-fully compatible with standard axial-component insertion machines and wave soldering profiles. Its navy blue cathode band and orange body provide unambiguous orientation marking for vision-guided placement systems handling the HZ5B2J-E.
What is the maximum reverse leakage current for HZ5B2J-E at 2.0 V?
The HZ5B2J-E specifies a maximum reverse leakage current (IR) of 1 μA when measured at VR = 2.0 V and Ta = 25°C. This low leakage supports high-impedance circuit nodes such as op-amp bias inputs and precision voltage dividers. The value is confirmed in the "Electrical Characteristics" table on page 2 of the HZ5B2J-E datasheet REJ03G0182-0300.
HZ5B2J-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:
- -
HZ5B2J-E FAQ
1.How can I place an order for HZ5B2J-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZ5B2J-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 HZ5B2J-E reliable?
The price and inventory of HZ5B2J-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZ5B2J-E is usually 5 days.
3.What payment methods are accepted for HZ5B2J-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZ5B2J-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZ5B2J-E?
HZ5B2J-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZ5B2J-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 HZ5B2J-E?
For technical support, including HZ5B2J-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZ5B2J-E requirements.
6.How does Aetrix verify that HZ5B2J-E is sourced from the original manufacturer or authorized distributors?
All HZ5B2J-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 HZ5B2J-E meets industry standards.
7.What is the process for return or replacement of HZ5B2J-E?
All HZ5B2J-E units undergo pre-shipment inspection (PSI). If there is an issue with HZ5B2J-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 HZ5B2J-E part is unused and in its original packaging.
Return procedure for HZ5B2J-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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