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Renesas HZS22-1LTA-E
- Part No.:
- HZS22-1LTA-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZS22-1LTA-E.pdf
- Description:
- DIODE ZENER
- Quantity:
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Inventory:20,000
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Product details
Overview
HZS22-1LTA-E from Renesas Electronics is a silicon planar Zener diode optimized for low-noise voltage regulation in precision analog circuits, with a nominal zener voltage of 20.9–21.9 V, 400 mW power dissipation, and dynamic resistance of 20.0 Ω at 0.5 mA test current. It serves as a stable reference in stabilized power supplies, instrumentation amplifiers, and sensor signal conditioning where low noise and tight voltage tolerance are critical.
For engineers reviewing the HZS22-1LTA-E datasheet, HZS22-1LTA-E pinout, HZS22-1LTA-E application, or HZS22-1LTA-E equivalent, key selection criteria include its 20.0 Ω zener impedance at 0.5 mA, −55 to +175 °C storage temperature range, 200 °C junction temperature limit, black cathode band marking, and MHD package compatibility with 5 mm-pitch high-speed automatic insertion.
Technical Context
This device uses a silicon planar junction structure to achieve low noise-approximately 1/3 to 1/10 that of the legacy HZ series-with tightly controlled zener voltage distribution across the HZS-L family. Its low leakage and low zener impedance support stable regulation under light-load conditions typical in reference and biasing applications.
The HZS22-1LTA-E operates within a defined DC test condition (IZ = 0.5 mA), exhibits a negative zener voltage temperature coefficient in the 20–22 V range (≈ −0.04 %/°C per Fig.2), and is rated for 400 mW power dissipation on a standard 100 × 180 × 1.6 mm paper-phenol PCB per Fig.3.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 20.9–21.9 V at IZ = 0.5 mA - defines stable regulation window for mid-range voltage references |
| Dynamic Resistance (rd) | 20.0 Ω at IZ = 0.5 mA - ensures minimal output voltage variation under small load transients |
| Power Dissipation (Pd) | 400 mW - supports continuous operation in compact PCB layouts without forced cooling |
| Junction Temperature (Tj) | 200 °C - enables reliable operation in high-ambient industrial environments |
| Storage Temperature (Tstg) | −55 to +175 °C - compatible with extended industrial and automotive under-hood storage |
| Reverse Current (IR) | Max 1 μA at VR = 15.0 V - minimizes parasitic loading in high-impedance reference nodes |
| Noise Level | ≈1/3–1/10 of HZ series - reduces broadband noise contribution in precision ADC/DAC reference paths |
Pinout & Package
Package: MHD (JEITA code GRZZ0002ZC-A), axial-leaded, 2.0 mm diameter body, 26.0 mm length, 0.4 mm lead diameter, 2.4 mm lead spacing, mass ≈ 0.084 g. Compatible with 5 mm-pitch automated insertion equipment.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Zener voltage reference node | Connected to regulated output or bias point; marked with black band for polarity identification |
| 2 (Anode) | Current return path | Typically tied to ground or lower potential rail; completes zener conduction path |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise zener structure | Reduces broadband voltage noise by up to 90% vs. HZ series-critical for high-resolution data acquisition |
| Low zener impedance | 20.0 Ω at 0.5 mA enables stable regulation even with microamp-level load variations |
| Wide zener voltage range | 20.9–21.9 V tolerance supports ±2.4% initial accuracy without external trimming |
| High thermal robustness | 200 °C max junction temperature allows use in thermally constrained enclosures |
| Automated assembly compatibility | MHD package with 5 mm pitch meets IPC-J-STD-020 standards for high-speed insertion |
Applications
| Industrial Sensor Signal Conditioning | Precision ADC Reference Supply |
|---|---|
Use Scenario: Stabilizing excitation voltage for strain-gauge bridges in factory-floor pressure transmitters. IC Role / Device Role / Timing Role: Zener diode provides low-drift, low-noise 21 V reference for bridge biasing and amplifier input offset compensation. Use Value: 20.0 Ω dynamic resistance and <1 μA leakage prevent gain error drift and maintain >16-bit effective resolution over temperature. | Use Scenario: Generating clean reference voltage for 24-bit sigma-delta ADCs in portable environmental monitors. IC Role / Device Role / Timing Role: Serves as primary voltage reference source upstream of precision voltage buffer and filter network. Use Value: Ultra-low noise performance suppresses quantization uncertainty, enabling sub-10 ppm measurement repeatability. |
| Stabilized Power Supply Feedback | Optocoupler Biasing in Isolated SMPS |
Use Scenario: Setting precise output voltage threshold in secondary-side feedback loop of 24 V industrial DC-DC converter. IC Role / Device Role / Timing Role: Zener clamps TL431 reference input to fixed 21.5 V midpoint, improving load regulation linearity. Use Value: Tight 20.9–21.9 V tolerance eliminates need for trim-pot adjustment, reducing BOM count and calibration time. | Use Scenario: Providing stable bias to phototransistor side of linear optocoupler in isolated flyback controller feedback path. IC Role / Device Role / Timing Role: Maintains constant LED drive current despite input ripple, ensuring consistent CTR and loop stability. Use Value: Low leakage (<1 μA) prevents optocoupler turn-off delay; low impedance ensures fast transient response to load steps. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5254B (ON Semiconductor) | Zener voltage 20 V ±5%, rd = 27 Ω at 20 mA, Pd = 500 mW, DO-35 package | Higher test current (20 mA vs. 0.5 mA) shifts operating point; higher impedance degrades light-load regulation | Prefer HZS22-1LTA-E when low-current stability and noise matter most; choose 1N5254B only if higher power margin is required |
| BZX55-C22 (Vishay) | Zener voltage 22 V ±5%, rd = 25 Ω at 5 mA, Pd = 500 mW, DO-35 package | Looser voltage tolerance and higher test current reduce accuracy in precision biasing; no published noise spec | Select HZS22-1LTA-E for noise-sensitive references; BZX55-C22 may suffice in non-critical supply rails |
Compared with 1N5254B and BZX55-C22, the HZS22-1LTA-E delivers superior low-current regulation (0.5 mA test), lower dynamic impedance (20.0 Ω), and documented ultra-low noise-making it the preferred choice for precision analog reference design, not just generic voltage clamping.
Availability
HZS22-1LTA-E is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, precision ADC reference supply, and stabilized power supply feedback requiring stable component supply, long-term lifecycle continuity, and RoHS-compliant sourcing.
Supply support for HZS22-1LTA-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 Corporation is a global semiconductor leader specializing in microcontrollers, analog, power, and connectivity solutions for industrial, automotive, and infrastructure markets.
The HZS-L Series was developed specifically for low-noise, high-stability voltage reference applications in precision analog systems-emphasizing reduced zener noise, tight voltage tolerance, and robust thermal performance over legacy Zener families.
FAQ
What is the zener voltage tolerance of HZS22-1LTA-E?
The HZS22-1LTA-E has a zener voltage range of 20.9 V to 21.9 V at IZ = 0.5 mA, representing a ±2.4% tolerance around the nominal 21.4 V midpoint. This tight distribution eliminates need for post-manufacture trimming in most precision reference designs and is confirmed in the Renesas REJ03G0166-0300 datasheet, Page 3.
Does HZS22-1LTA-E support automated PCB assembly?
Yes, the HZS22-1LTA-E uses the MHD package (JEITA code GRZZ0002ZC-A) designed explicitly for 5 mm-pitch high-speed automatic insertion. Its standardized axial lead geometry, 2.4 mm lead spacing, and 0.4 mm lead diameter comply with IPC-J-STD-020 handling requirements, enabling direct integration into automated placement lines without retooling.
What is the maximum reverse leakage current for HZS22-1LTA-E?
The maximum reverse leakage current for HZS22-1LTA-E is 1 μA at VR = 15.0 V and Ta = 25 °C, as specified in the Electrical Characteristics table on Page 3 of the Renesas REJ03G0166-0300 datasheet. This low leakage preserves high-impedance node integrity in battery-powered and low-power sensor interfaces.
How does the noise performance of HZS22-1LTA-E compare to standard Zener diodes?
The HZS22-1LTA-E achieves approximately 1/3 to 1/10 the broadband noise level of the legacy HZ series, as stated in the Features section (Page 1) of the Renesas datasheet. This reduction stems from its silicon planar construction and process optimization-directly benefiting precision ADC references, low-level amplifier biasing, and metrology-grade signal chains where noise floor matters.
Is HZS22-1LTA-E suitable for automotive applications?
The HZS22-1LTA-E is classified as a "Standard" quality grade device per Renesas' quality grading system (Page 1, Note 7), intended for office equipment, communications gear, and industrial robots-not transportation or safety-critical automotive systems. For AEC-Q200 qualified alternatives, consult Renesas' automotive-grade Zener portfolio separately; HZS22-1LTA-E itself is not certified for under-hood or safety-relevant use.
HZS22-1LTA-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:
- -
HZS22-1LTA-E FAQ
1.How can I place an order for HZS22-1LTA-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZS22-1LTA-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 HZS22-1LTA-E reliable?
The price and inventory of HZS22-1LTA-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZS22-1LTA-E is usually 5 days.
3.What payment methods are accepted for HZS22-1LTA-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZS22-1LTA-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZS22-1LTA-E?
HZS22-1LTA-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZS22-1LTA-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 HZS22-1LTA-E?
For technical support, including HZS22-1LTA-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZS22-1LTA-E requirements.
6.How does Aetrix verify that HZS22-1LTA-E is sourced from the original manufacturer or authorized distributors?
All HZS22-1LTA-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 HZS22-1LTA-E meets industry standards.
7.What is the process for return or replacement of HZS22-1LTA-E?
All HZS22-1LTA-E units undergo pre-shipment inspection (PSI). If there is an issue with HZS22-1LTA-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 HZS22-1LTA-E part is unused and in its original packaging.
Return procedure for HZS22-1LTA-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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