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Renesas HZ22-3JTA-E
- Part No.:
- HZ22-3JTA-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZ22-3JTA-E.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:15,000
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Product details
Overview
HZ22-3JTA-E from Renesas is a silicon planar Zener diode optimized for low-noise voltage regulation in precision analog circuits, featuring a nominal zener voltage of 22.3–23.3 V at 0.5 mA test current, dynamic resistance of 20.0 Ω, maximum power dissipation of 400 mW, and junction temperature rating up to 175°C - deployed in reference supplies for ADCs, sensor signal conditioning, and low-drift instrumentation amplifiers.
For engineers reviewing the HZ22-3JTA-E datasheet, HZ22-3JTA-E pinout, HZ22-3JTA-E application, or HZ22-3JTA-E equivalent, key selection criteria include verified low-noise performance (≈1/3–1/10 lower than standard HZ series), tight zener voltage tolerance, DO-35 package thermal derating behavior, and compatibility with low-current biasing topologies requiring stable 22 V reference points.
Technical Context
The HZ22-3JTA-E operates as a two-terminal voltage reference device using silicon planar Zener breakdown, with specified DC testing conditions (IZ = 0.5 mA) and characterized dynamic impedance (rd = 20.0 Ω) indicating strong regulation under small-signal load variations. Its low leakage and low zener impedance support high-accuracy biasing in noise-sensitive front-end stages.
This device belongs to the HZ-L Series, distinguished by navy-blue cathode band marking and orange body color, and is rated for storage temperatures from −55°C to +175°C - enabling use in industrial and automotive-adjacent environments where thermal cycling stability is critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 22.3–23.3 V at IZ = 0.5 mA - defines precise operating point for 22 V reference design |
| Dynamic Resistance (rd) | 20.0 Ω - ensures minimal output voltage shift under ±100 μA load transients |
| Power Dissipation (Pd) | 400 mW - supports continuous operation at ambient ≤75°C on standard FR-4 PCB |
| Junction Temperature (Tj) | 175°C - enables reliable function in high-temperature enclosures without forced cooling |
| Reverse Current (IR) | ≤1 μA at VR = 18.0 V - guarantees negligible error contribution in high-impedance reference nodes |
| Temperature Coefficient (γZ) | ≈−0.04 %/°C (typ.) - provides predictable drift behavior near 22 V for calibration compensation |
Pinout & Package
Package: DO-35 (JEITA code GRZZ0002ZB-A), glass axial leaded package with navy-blue cathode band and orange body; mass ≈0.13 g; dimensions per SC-40 standard (φD = 2.0 mm, L = 26.0 mm, E = 4.2 mm).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Zener breakdown anode connection | Connected to higher-potential rail; reverse-biased terminal defining regulated output node |
| 2 (Anode) | Zener breakdown cathode connection | Connected to circuit ground or common reference; establishes polarity for stable conduction |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise Zener operation | Noise level ≈1/3–1/10 that of standard HZ series - directly reduces RMS noise floor in precision references |
| Tight zener voltage tolerance | ±0.5 V window at 22 V - simplifies trimming requirements in factory-calibrated instruments |
| Low dynamic impedance | 20.0 Ω at 0.5 mA - maintains regulation accuracy across typical sensor interface bias currents |
| High thermal endurance | 175°C max junction temperature - supports deployment in sealed industrial control modules |
| Stable low-leakage performance | ≤1 μA at 18 V reverse bias - avoids loading errors in megohm-range feedback networks |
Applications
| High-Precision ADC Reference | Low-Drift Sensor Biasing |
|---|---|
Use Scenario: Providing stable 22 V reference for 24-bit sigma-delta ADCs in weigh-scale transducer interfaces. IC Role / Device Role / Timing Role: Two-terminal voltage reference establishing exact input full-scale range for analog front-end. Use Value: Low dynamic resistance (20.0 Ω) and low noise suppress quantization uncertainty induced by supply ripple or thermal drift. |
Use Scenario: Biasing bridge-type pressure sensors in HVAC differential-pressure modules operating over −25°C to +85°C ambient. IC Role / Device Role / Timing Role: Stable excitation source for Wheatstone bridge, decoupled from main supply variations. Use Value: Tight VZ tolerance (22.3–23.3 V) and low tempco minimize zero-point drift across temperature range. |
| Instrumentation Amplifier VREF | Calibration Voltage Standard |
Use Scenario: Generating reference voltage for gain-setting resistors in programmable-gain instrumentation amplifiers used in medical ECG front-ends. IC Role / Device Role / Timing Role: Precision DC voltage source defining common-mode offset and gain scaling. Use Value: Low leakage (≤1 μA) prevents current-induced errors in high-impedance gain networks, preserving CMRR. |
Use Scenario: On-board calibration node in portable multimeters requiring traceable 22 V reference during self-test routines. IC Role / Device Role / Timing Role: Factory-trimmed voltage anchor used during automated test equipment (ATE) verification cycles. Use Value: DO-35 mechanical stability and 175°C Tj rating ensure long-term repeatability under thermal soak test conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5255B (ON Semiconductor) | Zener voltage 22 V ±5%, rd = 27 Ω, Pd = 500 mW, DO-35 package | Higher dynamic resistance increases load regulation error; wider VZ tolerance requires post-calibration | Acceptable where cost sensitivity outweighs noise and precision requirements |
| BZX55-C22 (Vishay) | Zener voltage 22 V ±5%, rd = 30 Ω, Pd = 500 mW, DO-35 package, no low-noise optimization | Lacks documented noise reduction vs. HZ series; higher leakage (≤5 μA) affects high-Z circuits | Suitable for general-purpose regulation but not recommended for sub-μV noise-critical designs |
Compared with 1N5255B and BZX55-C22, the HZ22-3JTA-E delivers superior noise performance and tighter VZ control - critical when designing reference sources for metrology-grade measurement systems where 0.1% absolute accuracy and <10 nV/√Hz noise matter.
Availability
HZ22-3JTA-E is available at Aetrix Electronics and suitable for high-precision ADC reference design, low-drift sensor biasing, and calibration voltage standard applications requiring stable component supply, consistent parametric binning, and long-lifecycle availability.
Supply support for HZ22-3JTA-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 manufacturer specializing in microcontrollers, analog power devices, and precision analog components for industrial, automotive, and infrastructure markets.
The HZ-L Series was developed specifically for low-noise, high-stability voltage reference applications in instrumentation, test equipment, and sensor signal chains - emphasizing reduced diode noise, tight VZ tolerance, and robust thermal performance.
FAQ
What is the exact zener voltage range for HZ22-3JTA-E?
The HZ22-3JTA-E has a guaranteed zener voltage range of 22.3 V to 23.3 V when tested at IZ = 0.5 mA and Ta = 25°C. This 1.0 V window reflects the "3" variant within the HZ22-L family and is tighter than generic 5% tolerance Zeners, supporting accurate reference design without external trimming.
Is HZ22-3JTA-E suitable for surface-mount assembly?
No - the HZ22-3JTA-E uses a DO-35 axial glass package with leads intended for through-hole mounting. It is not compatible with reflow soldering or pick-and-place automation for SMT lines. For SMT alternatives, Renesas offers the HZ22-3JTA-E's functional equivalents only in leaded packages; no SMD variant exists in the HZ-L Series.
How does the noise performance of HZ22-3JTA-E compare to standard Zeners?
The HZ22-3JTA-E achieves approximately 1/3 to 1/10 the noise level of conventional HZ-series Zeners due to optimized silicon planar structure and process controls. This is confirmed in Renesas' REJ03G0182-0300 documentation and makes HZ22-3JTA-E appropriate for ultra-low-noise reference nodes in audio DACs and precision data acquisition systems.
What is the maximum allowable reverse current before breakdown in HZ22-3JTA-E?
The HZ22-3JTA-E specifies a maximum reverse current (IR) of 1 μA at VR = 18.0 V, measured at Ta = 25°C. This low leakage ensures minimal error injection into high-impedance reference dividers or op-amp inputs, preserving accuracy in battery-powered or low-power instrumentation designs.
Can HZ22-3JTA-E be used in parallel for higher power handling?
No - paralleling HZ22-3JTA-E units is not recommended due to mismatched zener voltages and thermal runaway risk. Each device must be individually biased at its specified IZ = 0.5 mA. For higher power needs, Renesas recommends discrete resistor-Zener combinations or active reference ICs rather than parallel Zener diodes.
HZ22-3JTA-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:
- -
HZ22-3JTA-E FAQ
1.How can I place an order for HZ22-3JTA-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZ22-3JTA-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 HZ22-3JTA-E reliable?
The price and inventory of HZ22-3JTA-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZ22-3JTA-E is usually 5 days.
3.What payment methods are accepted for HZ22-3JTA-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZ22-3JTA-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZ22-3JTA-E?
HZ22-3JTA-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZ22-3JTA-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 HZ22-3JTA-E?
For technical support, including HZ22-3JTA-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZ22-3JTA-E requirements.
6.How does Aetrix verify that HZ22-3JTA-E is sourced from the original manufacturer or authorized distributors?
All HZ22-3JTA-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 HZ22-3JTA-E meets industry standards.
7.What is the process for return or replacement of HZ22-3JTA-E?
All HZ22-3JTA-E units undergo pre-shipment inspection (PSI). If there is an issue with HZ22-3JTA-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 HZ22-3JTA-E part is unused and in its original packaging.
Return procedure for HZ22-3JTA-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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