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Renesas HZ5A2JTD-E
- Part No.:
- HZ5A2JTD-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZ5A2JTD-E.pdf
- Description:
- DIODE ZENER 0.5W
- Quantity:
- Payment:
- Shipping:
Inventory:7,500
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Product details
Overview
HZ5A2JTD-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 (min 5.3 V, max 5.6 V), 400 mW power dissipation, 80 Ω dynamic impedance at 0.5 mA test current, and DO-35 glass package with navy-blue cathode band. It serves as a stable reference in low-drift power supplies and sensor biasing networks.
For engineers reviewing the HZ5A2JTD-E datasheet, HZ5A2JTD-E pinout, HZ5A2JTD-E application, or HZ5A2JTD-E equivalent, key selection criteria include zener voltage tolerance (±0.3 V), low noise performance (1/3–1/10 that of standard HZ series), temperature coefficient (−0.04 %/°C typical), and thermal stability up to 175°C junction temperature.
Technical Context
This device operates as a two-terminal voltage reference using avalanche breakdown in a planar-diffused silicon junction. Its low dynamic resistance (80 Ω) and tight zener voltage tolerance ensure minimal output variation under load and line changes.
Designed for DC-stabilized operation, HZ5A2JTD-E exhibits a negative temperature coefficient (−0.04 %/°C) optimized for 5.6 V regulation, enabling predictable drift compensation in feedback loops without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 5.3 V min to 5.6 V max at IZ = 0.5 mA - defines precise regulation window for low-voltage reference design |
| Dynamic Resistance (rd) | 80 Ω max at IZ = 0.5 mA - ensures minimal output impedance and high ripple rejection |
| Power Dissipation (Pd) | 400 mW at Ta = 25°C - supports continuous operation in compact PCB layouts without forced cooling |
| Junction Temperature (Tj) | 175°C maximum - enables reliable use in industrial ambient environments up to 125°C with derating |
| Reverse Leakage Current (IR) | 1 μA max at VR = 2.0 V - guarantees negligible error current in high-impedance reference nodes |
| Temperature Coefficient (γZ) | −0.04 %/°C typical - provides predictable, linear drift for calibration-critical applications |
Pinout & Package
Package: DO-35 glass axial lead package (JEITA code GRZZ0002ZB-A), orange body color, navy-blue cathode band, 2.0 mm diameter × 26.0 mm length, 0.13 g mass.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | High-side terminal of reverse-biased junction | Connected to regulated voltage node; polarity must be observed to avoid forward conduction |
| 2 (Anode) | Low-side terminal of reverse-biased junction | Typically grounded or tied to lower potential; establishes reference return path |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise Zener operation | Noise level reduced to 1/3–1/10 of standard HZ series - critical for audio preamps and precision ADC references |
| Tight zener voltage tolerance | ±0.3 V over 5.3–5.6 V range - eliminates need for post-assembly trimming in production |
| Stable temperature coefficient | −0.04 %/°C typical at 5.6 V - enables predictable drift behavior across −55°C to +125°C operating range |
| Low leakage current | ≤1 μA at 2.0 V reverse bias - preserves accuracy in high-impedance voltage divider and sensor bias networks |
| Robust thermal rating | 175°C max junction temperature - supports long-term reliability in sealed enclosures and automotive under-hood locations |
Applications
| Instrumentation Reference | Low-Noise Audio Biasing |
|---|---|
Use Scenario: Precision voltage reference for 16-bit SAR ADC front-end and programmable gain amplifier offset calibration. IC Role / Device Role / Timing Role: Zener diode providing stable 5.6 V reference to op-amp feedback network and ADC reference input. Use Value: Low dynamic impedance (80 Ω) minimizes reference droop during sampling transients; low noise prevents SNR degradation in sub-90 dB systems. |
Use Scenario: Cathode-biased gain stage in phono preamplifier requiring ultra-low hum and microphonic sensitivity. IC Role / Device Role / Timing Role: Zener diode establishing quiet, stable anode voltage for JFET input stage biasing. Use Value: Noise reduction to 1/10 of standard HZ series directly lowers integrated input-referred noise floor below 1.5 μV RMS. |
| Industrial Sensor Excitation | Embedded Power Monitor Calibration |
Use Scenario: Constant-current excitation source for RTD and strain gauge bridges in Class A process transmitters. IC Role / Device Role / Timing Role: Zener diode regulating current-source reference voltage in 4–20 mA loop transmitter ICs. Use Value: Tight ±0.3 V tolerance ensures <0.5% full-scale error in bridge excitation; −0.04 %/°C TC enables <±1 LSB drift over 0–70°C. |
Use Scenario: Calibration reference for on-board voltage monitor ICs in telecom power shelves and server VRMs. IC Role / Device Role / Timing Role: Zener diode supplying known reference to comparator input for overvoltage lockout threshold setting. Use Value: 400 mW power rating allows direct connection to 12 V rail with 1.8 kΩ series resistor; low leakage avoids false triggering during standby. |
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 |
|---|---|---|---|
| BZX55-C5V6 (ON Semiconductor) | Same 5.6 V nominal, but 100 Ω rd, higher noise, 500 mW Pd, DO-35 package | Higher dynamic impedance limits use in fast transient-sensitive references | Select when higher power margin is needed and noise is secondary to cost |
| MMSZ5232B (Diodes Inc.) | 5.6 V nominal, 100 Ω rd, SOD-123 surface-mount, 500 mW Pd, no low-noise specification | Surface-mount form factor requires layout change; lacks documented noise advantage | Select for automated assembly where board space is constrained and noise spec is relaxed |
Compared with BZX55-C5V6 and MMSZ5232B, HZ5A2JTD-E delivers superior noise performance and tighter dynamic impedance at identical voltage grade, making it preferred for metrology-grade references-though its through-hole DO-35 package requires manual or wave-solder placement.
Availability
HZ5A2JTD-E is available at Aetrix Electronics and suitable for instrumentation reference, low-noise audio biasing, and industrial sensor excitation requiring stable component supply, consistent parametric performance across production lots, and long-term obsolescence management.
Supply support for HZ5A2JTD-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, and power devices, with deep heritage in precision analog and industrial-grade components.
HZ5A2JTD-E belongs to the HZ-L Series of low-noise Zener diodes, designed specifically for high-fidelity voltage reference applications where noise, stability, and temperature predictability outweigh cost or footprint constraints.
FAQ
What is the exact zener voltage range specified for HZ5A2JTD-E?
The HZ5A2JTD-E has a guaranteed zener voltage range of 5.3 V minimum to 5.6 V maximum when tested at IZ = 0.5 mA and Ta = 25°C. This 0.3 V tolerance reflects tight binning for precision reference use, and the device is part of the HZ-L Series' "B2" variant group, which consistently targets mid-range values within the 5.2–5.9 V family.
Does HZ5A2JTD-E support operation above 125°C ambient temperature?
Yes, HZ5A2JTD-E is rated for storage from −55°C to +175°C and junction temperature up to 175°C. At 125°C ambient, its power dissipation must be derated per Figure 3 in the datasheet (REJ03G0182-0300), reducing usable Pd to approximately 220 mW. The device remains fully functional and stable within this derated envelope.
How does the noise performance of HZ5A2JTD-E compare to standard Zener diodes?
HZ5A2JTD-E achieves approximately 1/3 to 1/10 the noise level of conventional HZ-series Zeners due to optimized planar junction processing and low-leakage design. This is confirmed in the "Features" section of REJ03G0182-0300 and validated by Renesas' low-noise characterization methodology-making HZ5A2JTD-E suitable for sub-10 μV RMS noise-critical signal chains.
Is HZ5A2JTD-E compatible with lead-free reflow soldering processes?
HZ5A2JTD-E uses a DO-35 glass package with axial leads and is intended for through-hole mounting. While not designed for reflow, it withstands wave soldering profiles compliant with JEDEC J-STD-020 up to 260°C peak for 10 seconds. Lead-free wave soldering is supported; reflow is not recommended due to thermal stress on glass-to-metal seals.
What is the reverse leakage current specification for HZ5A2JTD-E at 2.0 V?
The reverse leakage current (IR) for HZ5A2JTD-E is specified as ≤1 μA maximum when tested at VR = 2.0 V and Ta = 25°C. This low leakage ensures minimal error contribution in high-impedance reference dividers and maintains accuracy in battery-powered sensor nodes where quiescent current matters.
HZ5A2JTD-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:
- -
HZ5A2JTD-E FAQ
1.How can I place an order for HZ5A2JTD-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZ5A2JTD-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 HZ5A2JTD-E reliable?
The price and inventory of HZ5A2JTD-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZ5A2JTD-E is usually 5 days.
3.What payment methods are accepted for HZ5A2JTD-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZ5A2JTD-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZ5A2JTD-E?
HZ5A2JTD-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZ5A2JTD-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 HZ5A2JTD-E?
For technical support, including HZ5A2JTD-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZ5A2JTD-E requirements.
6.How does Aetrix verify that HZ5A2JTD-E is sourced from the original manufacturer or authorized distributors?
All HZ5A2JTD-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 HZ5A2JTD-E meets industry standards.
7.What is the process for return or replacement of HZ5A2JTD-E?
All HZ5A2JTD-E units undergo pre-shipment inspection (PSI). If there is an issue with HZ5A2JTD-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 HZ5A2JTD-E part is unused and in its original packaging.
Return procedure for HZ5A2JTD-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HZ5A2JTD-E Tags
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