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Renesas HZ22-1JTA-E
- Part No.:
- HZ22-1JTA-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZ22-1JTA-E.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:10,000
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Product details
Overview
HZ22-1JTA-E from Renesas 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, 20 Ω dynamic impedance at 0.5 mA test current, and DO-35 glass package for thermal stability in stabilized power supplies.
For engineers reviewing the HZ22-1JTA-E datasheet, HZ22-1JTA-E pinout, HZ22-1JTA-E application, or HZ22-1JTA-E equivalent, key selection criteria include zener voltage tolerance (±5%), low noise performance versus standard HZ series, temperature coefficient behavior near 21 V, and compatibility with through-hole PCB layouts requiring DO-35 footprint and cathode-band polarity marking.
Technical Context
The HZ22-1JTA-E operates as a two-terminal shunt regulator with DC-tested zener breakdown characteristics, designed for low-noise biasing in op-amp references, sensor excitation, and ADC voltage reference buffers where ripple rejection and thermal drift minimization are critical.
Its zener voltage exhibits a positive temperature coefficient (~+0.04 %/°C at ~21 V), confirmed by Figure 2 in REJ03G0182-0300, and maintains stable regulation under 0.5–1 mA zener current, with leakage current limited to ≤1 μA at VR = 15 V per electrical characteristics table.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 20.9–21.9 V at IZ = 0.5 mA - defines precise regulation point for mid-range voltage references |
| Power Dissipation (Pd) | 400 mW - supports continuous operation in compact through-hole designs without forced cooling |
| Dynamic Resistance (rd) | 20 Ω max at IZ = 0.5 mA - ensures low output impedance for effective ripple suppression |
| Reverse Leakage (IR) | ≤1 μA at VR = 15 V - minimizes error current in high-impedance reference nodes |
| Junction Temperature (Tj) | −55 to +175 °C - enables use in industrial environments with wide ambient swings |
| Noise Reduction | ~1/3–1/10 lower than standard HZ series - directly improves SNR in sensitive analog signal chains |
Pinout & Package
Package: DO-35 glass axial package (JEITA code GRZZ0002ZB-A), orange body color with navy-blue cathode band; 2.0 mm diameter, 26.0 mm length, 0.13 g mass; compatible with standard through-hole soldering and wave processes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Zener breakdown terminal | Connected to higher-potential node; polarity must be observed to avoid forward conduction |
| 2 (Anode) | Reference ground terminal | Typically tied to system ground or low-impedance return path for stable regulation |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise zener structure | Reduces broadband voltage noise by factor of 3–10 vs. legacy HZ series, critical for audio and measurement front-ends |
| Stable zener impedance | 20 Ω max ensures predictable load regulation and minimal output deviation under varying current |
| Wide operating temperature range | −55 to +175 °C junction rating supports deployment in automotive engine control and industrial motor drives |
| Precision voltage tolerance | ±5% VZ window (20.9–21.9 V) enables accurate calibration without post-manufacture trimming |
Applications
| High-Precision Reference Supply | Low-Noise Sensor Biasing |
|---|---|
Use Scenario: Providing stable excitation voltage to strain gauge bridges in weigh-scale transducers where microvolt-level drift affects accuracy. IC Role / Device Role / Timing Role: Shunt voltage reference maintaining constant bias across bridge arms independent of supply variation. Use Value: 20 Ω dynamic resistance and <1 μA leakage minimize offset error and thermal hysteresis in ratiometric measurements. | Use Scenario: Supplying clean bias to MEMS accelerometer analog front-ends in vibration monitoring systems operating near machinery noise sources. IC Role / Device Role / Timing Role: Low-noise DC reference generator isolating sensor signal path from switching power supply ripple. Use Value: 1/3–1/10 lower diode noise vs. standard HZ series directly improves signal-to-noise ratio in sub-milligal detection. |
| ADC Voltage Reference Buffer | Industrial PLC Analog Input Protection |
Use Scenario: Stabilizing reference input to 16-bit SAR ADCs in data acquisition modules where reference integrity determines ENOB. IC Role / Device Role / Timing Role: Secondary zener clamp regulating internal reference buffer supply rail against LDO dropout. Use Value: Tight 20.9–21.9 V tolerance and +0.04 %/°C TC ensure <0.02% full-scale drift over 0–70°C operating range. | Use Scenario: Overvoltage clamping on 4–20 mA current loop inputs in programmable logic controllers exposed to field wiring transients. IC Role / Device Role / Timing Role: Fast-response shunt protector absorbing surge energy while limiting voltage to safe IC interface levels. Use Value: 400 mW Pd and 175°C Tj allow sustained clamping during repetitive 100 V/1 A surges without thermal runaway. |
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 |
|---|---|---|---|
| BZX84-C22 (ON Semiconductor) | 22 V nominal, SOT-23 package, 300 mW Pd, 55 Ω rd, ±5% tolerance | Surface-mount only; higher dynamic impedance limits noise-sensitive uses | Select when board space is constrained and noise requirements are moderate |
| 1N4744A (ON Semiconductor) | 15 V nominal, DO-41 package, 1 W Pd, 14 Ω rd, ±5% tolerance | Lower voltage rating and larger DO-41 footprint; not a direct replacement for 21 V requirement | Choose only if redesign allows voltage scaling and increased board area |
Compared with BZX84-C22 and 1N4744A, the HZ22-1JTA-E delivers superior low-noise performance and tighter thermal stability at its specific 21 V operating point, making it irreplaceable in high-fidelity analog reference designs where DO-35 through-hole mounting is acceptable.
Availability
HZ22-1JTA-E is available at Aetrix Electronics and suitable for stabilized power supplies, precision analog references, and industrial sensor interfaces requiring stable component supply with consistent DO-35 mechanical form factor and low-noise zener characteristics.
Supply support for HZ22-1JTA-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 delivering microcontrollers, analog power, and mixed-signal solutions for automotive, industrial, and infrastructure markets.
The HZ-L Series was developed specifically for low-noise voltage reference applications in precision instrumentation and sensor signal conditioning, extending Renesas' legacy in high-stability discrete Zener technology.
FAQ
What is the exact zener voltage range specified for HZ22-1JTA-E?
The HZ22-1JTA-E has a guaranteed zener voltage range of 20.9 V to 21.9 V when tested at IZ = 0.5 mA, as documented in the Electrical Characteristics table on page 3 of REJ03G0182-0300 Rev.3.00. This ±5% tolerance window ensures predictable regulation behavior in precision reference designs without requiring binning or post-assembly calibration.
Is HZ22-1JTA-E suitable for surface-mount assembly?
No, the HZ22-1JTA-E uses a DO-35 glass axial package with 26.0 mm lead length and is designed exclusively for through-hole mounting. Its mechanical dimensions and JEITA code GRZZ0002ZB-A confirm compatibility only with axial-leaded PCB footprints-not SMT reflow or wave soldering processes. For SMT alternatives, consider BZX84-C22 or similar SOT-23 Zeners.
How does the noise performance of HZ22-1JTA-E compare to standard Zener diodes?
The HZ22-1JTA-E achieves approximately 1/3 to 1/10 lower diode noise than the legacy HZ series, as stated in the Features section of REJ03G0182-0300. This improvement stems from optimized silicon planar construction and process controls-directly enhancing SNR in applications like audio preamps, precision DAC references, and low-level sensor amplifiers where diode-generated noise dominates system floor.
What is the maximum reverse leakage current for HZ22-1JTA-E?
The maximum reverse leakage current (IR) for HZ22-1JTA-E is 1 μA at VR = 15 V, per the Electrical Characteristics table on page 2 of REJ03G0182-0300. This low leakage ensures minimal error current in high-impedance reference nodes, preserving accuracy in battery-powered or ultra-low-power analog circuits where standby current budget is critical.
Does HZ22-1JTA-E have a specified temperature coefficient?
Yes, the HZ22-1JTA-E exhibits a positive temperature coefficient of approximately +0.04 %/°C at its 21 V operating point, as shown in Figure 2 ("Temperature Coefficient vs. Zener Voltage") of REJ03G0182-0300. This value enables predictable drift modeling in temperature-compensated reference designs and confirms stable regulation behavior across −55°C to +125°C ambient conditions.
HZ22-1JTA-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:
- -
HZ22-1JTA-E FAQ
1.How can I place an order for HZ22-1JTA-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZ22-1JTA-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 HZ22-1JTA-E reliable?
The price and inventory of HZ22-1JTA-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZ22-1JTA-E is usually 5 days.
3.What payment methods are accepted for HZ22-1JTA-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZ22-1JTA-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZ22-1JTA-E?
HZ22-1JTA-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZ22-1JTA-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 HZ22-1JTA-E?
For technical support, including HZ22-1JTA-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZ22-1JTA-E requirements.
6.How does Aetrix verify that HZ22-1JTA-E is sourced from the original manufacturer or authorized distributors?
All HZ22-1JTA-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 HZ22-1JTA-E meets industry standards.
7.What is the process for return or replacement of HZ22-1JTA-E?
All HZ22-1JTA-E units undergo pre-shipment inspection (PSI). If there is an issue with HZ22-1JTA-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 HZ22-1JTA-E part is unused and in its original packaging.
Return procedure for HZ22-1JTA-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HZ22-1JTA-E Tags
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MM5Z5V1ST1G
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