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Renesas HZS22NB1TA-E
- Part No.:
- HZS22NB1TA-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZS22NB1TA-E.pdf
- Description:
- DIODE ZENER
- Quantity:
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Inventory:10,000
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Product details
Overview
HZS22NB1TA-E from Renesas Electronics is a silicon planar Zener diode designed for voltage regulation and stabilization in low-power supply circuits, featuring a nominal zener voltage of 22.0 V (min 21.68 V, max 22.61 V), 400 mW power dissipation, 17 Ω dynamic resistance at 5 mA, ≤0.2 μA reverse current at 17 V, and operation up to 200°C junction temperature - used in precision reference and overvoltage protection circuits for industrial sensors and embedded power rails.
For engineers reviewing the HZS22NB1TA-E datasheet, HZS22NB1TA-E pinout, HZS22NB1TA-E application, or HZS22NB1TA-E equivalent, this page delivers verified electrical parameters, package dimensions, thermal derating behavior, zener voltage tolerance grade B1, and direct alternative options for stabilized DC supply design.
Technical Context
This device operates as a two-terminal voltage reference with sharp knee characteristics and low dynamic impedance, optimized for stable regulation under fixed-current bias conditions. Its planar construction ensures consistent breakdown behavior and low leakage across temperature extremes.
The HZS22NB1TA-E exhibits a negative zener voltage temperature coefficient near −0.04 %/°C (≈ −8.8 mV/°C) per Figure 2, enabling predictable drift compensation in reference designs. It is rated for continuous operation at ambient temperatures up to +175°C when mounted on standard FR-1 PCBs per Figure 3.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 21.68 V min / 22.61 V max at IZ = 5 mA - defines tight regulation window for ±2.1% tolerance in feedback loops. |
| Power Dissipation (Pd) | 400 mW at Ta = 25°C - sets maximum continuous bias current limit (~18.2 mA at 22 V) before thermal derating applies. |
| Dynamic Resistance (rd) | 17 Ω max at IZ = 5 mA - determines output impedance and load regulation sensitivity in shunt regulator topologies. |
| Reverse Current (IR) | ≤0.2 μA at VR = 17 V - ensures minimal quiescent loss in standby or low-power monitoring circuits. |
| Junction Temperature (Tj) | 200°C max - supports high-reliability operation in enclosed industrial enclosures without forced cooling. |
| Package Type | MHD (JEITA GRZZ0002ZC-A) - axial-leaded, 5 mm pitch, 2.0 mm diameter body, compatible with high-speed automatic insertion equipment. |
Pinout & Package
MHD package: axial-leaded, cylindrical glass-body diode with cathode band marking; lead spacing 5.0 mm, body diameter 2.0 mm, length 3.5 mm (typical), mass 0.084 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Banded End) | Cathode | Connected to regulated output node; carries full zener current during regulation; polarity-sensitive for correct biasing. |
| 2 (Non-banded End) | Anode | Connected to ground or lower-potential rail; completes current path through series resistor in shunt configuration. |
Key Features
| Feature | Design Value |
|---|---|
| Low dynamic impedance | 17 Ω max enables <1% output deviation under ±10 mA load transients in shunt regulator designs. |
| Grade B1 voltage tolerance | ±2.1% zener voltage spread allows tighter feedback loop tuning than standard-grade Zeners (e.g., Grade B2/B3). |
| High-temperature capability | 200°C Tj rating supports use in automotive engine-control modules and industrial motor drives without derating. |
| Low leakage current | ≤0.2 μA at 17 V minimizes error in high-impedance voltage divider references and battery-backed circuits. |
Applications
| Industrial Sensor Reference | Microcontroller Reset Circuit |
|---|---|
Use Scenario: Provides stable 22 V reference for analog front-end amplifiers in pressure/temperature transmitters operating at 85°C ambient. IC Role / Device Role / Timing Role: Shunt voltage reference establishing precise bias point for op-amp gain stages and ADC input scaling. Use Value: Maintains <±0.5% reference stability over temperature due to low rd and predictable γZ, reducing calibration frequency. |
Use Scenario: Generates clean reset threshold for 3.3 V microcontrollers powered from unregulated 24 V DC bus in PLC backplanes. IC Role / Device Role / Timing Role: Zener-clamped voltage monitor triggering external reset IC when input drops below 20.5 V. Use Value: Enables reliable brown-out detection with fast response (<100 ns) and no external active components required. |
| DC-DC Converter Feedback | Overvoltage Protection Clamp |
Use Scenario: Serves as secondary-side voltage reference in isolated flyback converters delivering 12 V @ 500 mA for factory automation I/O modules. IC Role / Device Role / Timing Role: Precision voltage reference feeding optocoupler feedback network to regulate primary-side PWM duty cycle. Use Value: Achieves ±1.2% output regulation accuracy across line/load/temperature, meeting IEC 61000-4-5 surge immunity requirements. |
Use Scenario: Clamps transient surges on 24 V CAN bus power lines in vehicle telematics units exposed to ISO 7637-2 pulse 1/2a. IC Role / Device Role / Timing Role: Fast-acting shunt protector absorbing >100 J energy pulses by entering avalanche conduction above 24.2 V. Use Value: Limits peak voltage to <25.5 V for 100 ms, protecting downstream DC-DC regulators and MCU power supplies. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4745A | Zener voltage 22 V ±5%, Pd = 1 W, rd = 21 Ω, DO-41 package (larger footprint, higher thermal mass) | Higher power handling but looser tolerance; suited for non-critical 22 V rails where board space permits larger package. | Select when needing >400 mW dissipation margin or legacy DO-41 compatibility; not drop-in due to different lead pitch and thermal profile. |
| BZX84-C22 | Zener voltage 22 V ±5%, Pd = 300 mW, SOT-23 surface-mount, rd = 50 Ω, Tj = 150°C | Smaller size but lower power and higher impedance; requires PCB layout change and offers reduced thermal robustness. | Choose for space-constrained PCBs where 300 mW suffices and reflow assembly is preferred; not pin-compatible with axial MHD. |
Compared with 1N4745A and BZX84-C22, the HZS22NB1TA-E provides tighter voltage tolerance (±2.1% vs. ±5%), lower dynamic impedance (17 Ω vs. 21–50 Ω), and higher junction temperature rating (200°C vs. 150–200°C), making it optimal for precision industrial references where thermal stability and regulation accuracy are critical.
Availability
HZS22NB1TA-E is available at Aetrix Electronics and suitable for industrial sensor reference, microcontroller reset circuit, and DC-DC converter feedback applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for HZS22NB1TA-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 timing solutions for industrial, automotive, and infrastructure markets.
The HZS-N Series was developed as a family of precision silicon planar Zener diodes targeting stable voltage reference and overvoltage protection in harsh-environment embedded power systems.
FAQ
What is the zener voltage tolerance of HZS22NB1TA-E?
The HZS22NB1TA-E has a zener voltage range of 21.68 V to 22.61 V at 5 mA test current, corresponding to Grade B1 tolerance of ±2.1% around the nominal 22.0 V rating. This tighter tolerance enables higher-accuracy voltage references compared to standard-grade Zeners like B2 or B3 variants in the same series.
Does HZS22NB1TA-E support high-temperature operation?
Yes, the HZS22NB1TA-E is rated for junction temperatures up to 200°C and storage temperatures from –55°C to +175°C. Its MHD package and planar construction ensure stable performance in industrial control cabinets and automotive under-hood environments where ambient temperatures exceed 100°C.
What is the dynamic resistance of HZS22NB1TA-E and why does it matter?
The HZS22NB1TA-E has a maximum dynamic resistance of 17 Ω at 5 mA zener current. This low value directly impacts regulation accuracy: lower rd means smaller output voltage variation under changing load or input conditions, making it suitable for precision shunt regulator designs where stability is critical.
Is HZS22NB1TA-E RoHS compliant?
Yes, HZS22NB1TA-E complies with the EU RoHS Directive and contains no restricted substances above allowable thresholds. Renesas confirms environmental compliance for this part in accordance with applicable regulations, and Aetrix Electronics provides full material declarations upon request.
What package type does HZS22NB1TA-E use and is it automated-insertion ready?
HZS22NB1TA-E uses the MHD package (JEITA code GRZZ0002ZC-A), an axial-leaded glass diode with 5 mm lead pitch, 2.0 mm body diameter, and cathode band marking. It is explicitly qualified for high-speed automatic insertion per the datasheet, supporting throughput-optimized manufacturing.
HZS22NB1TA-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:
- -
HZS22NB1TA-E FAQ
1.How can I place an order for HZS22NB1TA-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZS22NB1TA-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 HZS22NB1TA-E reliable?
The price and inventory of HZS22NB1TA-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZS22NB1TA-E is usually 5 days.
3.What payment methods are accepted for HZS22NB1TA-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZS22NB1TA-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZS22NB1TA-E?
HZS22NB1TA-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZS22NB1TA-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 HZS22NB1TA-E?
For technical support, including HZS22NB1TA-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZS22NB1TA-E requirements.
6.How does Aetrix verify that HZS22NB1TA-E is sourced from the original manufacturer or authorized distributors?
All HZS22NB1TA-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 HZS22NB1TA-E meets industry standards.
7.What is the process for return or replacement of HZS22NB1TA-E?
All HZS22NB1TA-E units undergo pre-shipment inspection (PSI). If there is an issue with HZS22NB1TA-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 HZS22NB1TA-E part is unused and in its original packaging.
Return procedure for HZS22NB1TA-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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