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Renesas HZ6A2L90TA
- Part No.:
- HZ6A2L90TA
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
HZ6A2L90TA.pdf
- Description:
- DIODE ZENER 6V 500MW DO35
- Quantity:
- Payment:
- Shipping:
Inventory:645,000
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Product details
Overview
HZ6A2L90TA from Renesas Electronics is a silicon planar Zener diode optimized for low-noise voltage regulation in precision analog circuits, featuring a nominal zener voltage of 5.45 V (min 5.3 V / max 5.6 V), dynamic resistance of 150 Ω at 0.5 mA, and maximum power dissipation of 400 mW in a DO-35 package. It serves as a stable reference in low-drift power supplies, sensor biasing, and instrumentation front-ends where noise suppression is critical.
For engineers reviewing the HZ6A2L90TA datasheet, HZ6A2L90TA pinout, HZ6A2L90TA application, or HZ6A2L90TA equivalent, key selection criteria include its 1/3–1/10 lower noise level versus standard HZ-series diodes, tight zener voltage tolerance, low leakage current (<1 μA at VR = 2.0 V), and suitability for temperature-stable reference designs operating 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 impedance (150 Ω) and low temperature coefficient (≈−0.04 %/°C near 5.5 V) enable high regulation accuracy under varying load and thermal conditions.
The HZ6A2L90TA is characterized with DC test conditions per REJ03G0182-0300 Rev.3.00, exhibits reverse current ≤1 μA at 2.0 V, and maintains stable zener voltage across ambient temperatures from −55°C to +175°C with derated power dissipation above 25°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 5.3 V min / 5.6 V max at IZ = 0.5 mA - defines stable regulation range for precision 5.5 V references |
| Dynamic Resistance (rd) | 150 Ω max at IZ = 0.5 mA - ensures minimal output voltage variation under load transients |
| Reverse Current (IR) | ≤1 μA at VR = 2.0 V - guarantees low standby power loss and high input impedance in reference dividers |
| Power Dissipation (Pd) | 400 mW max at Ta = 25°C - supports compact PCB layouts without forced cooling in low-power analog stages |
| Junction Temperature (Tj) | −55°C to +175°C - enables operation in industrial and automotive under-hood environments |
| Noise Level | ≈1/3–1/10 of standard HZ series - directly reduces RMS noise in sensitive ADC reference and op-amp bias networks |
Pinout & Package
Package: DO-35 (JEITA code GRZZ0002ZB-A), glass axial leaded case with navy blue cathode band; body color orange; mass 0.13 g; dimensions per SC-40 standard (φD = 2.0 mm, E = 4.2 mm, L = 26.0 mm).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | High-side reference terminal | Connected to regulated positive rail; polarity must be observed to maintain reverse-bias operation |
| 2 (Anode) | Low-side reference terminal | Typically grounded or tied to lowest system potential; completes current path for zener conduction |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low noise performance | Reduces broadband voltage noise in precision references by factor of 3–10 vs. legacy HZ diodes |
| Tight zener voltage tolerance | ±0.15 V window (5.3–5.6 V) enables accurate 5.5 V regulation without trimming |
| Low dynamic impedance | 150 Ω ensures <1 mV output shift per 100 μA load change in feedback networks |
| High thermal stability | Negative tempco ≈−0.04 %/°C minimizes drift over −40°C to +85°C operating range |
| Robust reliability rating | Rated for 175°C junction temperature and qualified per Renesas "Standard" quality grade for industrial use |
Applications
| Instrumentation Amplifier Reference | ADC Voltage Reference |
|---|---|
Use Scenario: Biasing input stage of a low-noise instrumentation amplifier in medical ECG front-end. IC Role / Device Role / Timing Role: Provides stable 5.5 V common-mode reference for differential input stage. Use Value: Low diode noise prevents degradation of sub-μV signal resolution; 150 Ω rd avoids gain error from source impedance mismatch. |
Use Scenario: Supplying reference voltage to a 16-bit SAR ADC in data acquisition module. IC Role / Device Role / Timing Role: Serves as primary VREF source independent of main supply rail. Use Value: Tight 5.3–5.6 V tolerance ensures <±0.5 LSB reference error; low leakage avoids capacitor discharge during sample hold. |
| Temperature-Stable Sensor Bias | Low-Power Voltage Monitor |
Use Scenario: Biasing platinum RTD bridge in HVAC temperature controller with ±0.1°C accuracy. IC Role / Device Role / Timing Role: Delivers excitation voltage with minimal thermal drift to bridge top node. Use Value: −0.04 %/°C tempco contributes <±0.02 V drift over −25°C to +70°C ambient, preserving calibration integrity. |
Use Scenario: Enabling brown-out detection in battery-powered IoT node operating down to 2.5 V supply. IC Role / Device Role / Timing Role: Forms threshold element in comparator-based undervoltage lockout circuit. Use Value: 1 μA max reverse leakage ensures <10 nA current draw at monitor input, extending shelf life of coin-cell supply. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor MMBZ5222BLT1G | Zener voltage 5.1 V (±5%), rd = 17 Ω, Pd = 300 mW, SOT-23 package | Lower dynamic impedance but higher noise; unsuitable for ultra-low-noise analog chains | Select when board space is constrained and noise <10 μVRMS is not required |
| Vishay BZX55-C5V6 | Zener voltage 5.6 V (±5%), rd = 40 Ω, Pd = 500 mW, DO-35 package, no low-noise optimization | Higher noise floor and wider voltage tolerance; lacks documented noise reduction vs. HZ series | Choose for cost-sensitive industrial supplies where noise specification is relaxed |
Compared with HZ6A2L90TA, the MMBZ5222BLT1G offers superior dynamic impedance in a surface-mount package but sacrifices noise performance critical for precision analog; the BZX55-C5V6 matches DO-35 form factor and power rating but lacks verified low-noise design and tighter voltage binning.
Availability
HZ6A2L90TA is available at Aetrix Electronics and suitable for instrumentation amplifiers, ADC voltage references, temperature-stable sensor biasing, and low-power voltage monitoring requiring stable component supply with traceable sourcing and long-term lifecycle support.
Supply support for HZ6A2L90TA 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 Corporation is a Japanese semiconductor manufacturer specializing in microcontrollers, analog and power devices, and SoC solutions for industrial, automotive, and infrastructure markets.
The HZ-L Series was designed specifically for low-noise voltage reference applications in precision analog systems, addressing limitations of earlier HZ-series diodes through optimized planar junction processing and tighter parameter binning.
FAQ
What is the exact zener voltage range specified for HZ6A2L90TA?
The HZ6A2L90TA 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, per Renesas datasheet REJ03G0182-0300 Rev.3.00. This 0.3 V window supports precise 5.5 V reference generation without external trimming and is binned separately from adjacent variants like HZ6A1L and HZ6A3L.
Does HZ6A2L90TA have a documented noise specification?
Yes - the HZ6A2L90TA belongs to the HZ-L Series, explicitly characterized as having approximately 1/3 to 1/10 lower diode noise than the standard HZ series. While absolute RMS noise values are not tabulated per part number, this relative improvement is confirmed across the full HZ-L family in the official Renesas datasheet and applies directly to HZ6A2L90TA.
What is the maximum allowable reverse current for HZ6A2L90TA before regulation degrades?
The HZ6A2L90TA specifies a maximum reverse current (IR) of 1 μA at VR = 2.0 V, measured at Ta = 25°C. Exceeding this condition risks entering non-regulating region; for stable operation, it must be biased within its defined zener current range (0.5–1 mA typical), where dynamic resistance remains ≤150 Ω and voltage stability is maintained.
Can HZ6A2L90TA be used in surface-mount designs?
No - the HZ6A2L90TA is packaged exclusively in the through-hole DO-35 (GRZZ0002ZB-A) axial glass case. It does not have an SMT variant. For surface-mount alternatives with similar voltage and noise performance, consider evaluating Renesas' HZ-L Series SOD-123 variants or cross-referencing with ON Semiconductor's NZ9F5V6T5G, though noise data may not be equivalent.
Is HZ6A2L90TA rated for automotive applications?
No - the HZ6A2L90TA is classified under Renesas' "Standard" quality grade, intended for computers, office equipment, industrial robots, and communications gear. It is not qualified for automotive use (which requires "High Quality" grade per Renesas documentation), and its datasheet contains no AEC-Q200 stress test results or automotive temperature range validation beyond the stated −55°C to +175°C junction limit.
HZ6A2L90TA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- HZ
- Package/Case:
- DO-204AH, DO-35, Axial
- Packaging:
- Bulk
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 6 V
- Tolerance:
- ±2.5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 40 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 2 V
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-35
HZ6A2L90TA FAQ
1.How can I place an order for HZ6A2L90TA through Aetrix?
Please submit a Request for Quotation (RFQ) for HZ6A2L90TA 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 HZ6A2L90TA reliable?
The price and inventory of HZ6A2L90TA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZ6A2L90TA is usually 5 days.
3.What payment methods are accepted for HZ6A2L90TA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZ6A2L90TA transactions.
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4.How is shipping managed for HZ6A2L90TA?
HZ6A2L90TA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZ6A2L90TA 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 HZ6A2L90TA?
For technical support, including HZ6A2L90TA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZ6A2L90TA requirements.
6.How does Aetrix verify that HZ6A2L90TA is sourced from the original manufacturer or authorized distributors?
All HZ6A2L90TA 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 HZ6A2L90TA meets industry standards.
7.What is the process for return or replacement of HZ6A2L90TA?
All HZ6A2L90TA units undergo pre-shipment inspection (PSI). If there is an issue with HZ6A2L90TA, 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 HZ6A2L90TA part is unused and in its original packaging.
Return procedure for HZ6A2L90TA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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