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Renesas HZ22-3LTD-E
- Part No.:
- HZ22-3LTD-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZ22-3LTD-E.pdf
- Description:
- DIODE ZENER 0.4W
- Quantity:
- Payment:
- Shipping:
Inventory:18,750
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Product details
Overview
HZ22-3LTD-E 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 22.3–23.3 V, dynamic resistance of 20.0 Ω at 0.5 mA test current, and maximum power dissipation of 400 mW in a DO-35 package. It serves as a stable reference in low-drift power supplies and sensor biasing networks where noise suppression is critical.
For engineers reviewing the HZ22-3LTD-E datasheet, HZ22-3LTD-E pinout, HZ22-3LTD-E application, or HZ22-3LTD-E equivalent, key selection criteria include its verified low-noise performance (≈1/3–1/10 lower than standard HZ series), tight zener voltage tolerance, temperature coefficient behavior below ±0.08 %/°C in the 22 V range, and suitability for stabilized DC references in instrumentation-grade designs.
Technical Context
This device operates as a two-terminal shunt voltage regulator with a well-defined breakdown knee and low dynamic impedance, enabling high line and load regulation in feedback-free configurations. Its silicon planar construction ensures repeatable zener characteristics and low leakage (<1 μA at VR = 18.8 V).
The HZ22-3LTD-E exhibits a negative temperature coefficient near −0.06 %/°C (≈−13 mV/°C) in the 22 V range, confirmed by Figure 2 of REJ03G0182-0300 Rev.3.00, making it suitable for temperature-compensated reference stacks when paired with positive-TC devices.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 22.3 V min to 23.3 V max at IZ = 0.5 mA - defines precise regulation band for mid-range reference design |
| Dynamic Resistance (rd) | 20.0 Ω max at IZ = 0.5 mA - ensures minimal output voltage variation under load transients |
| Power Dissipation (Pd) | 400 mW max at Ta = 25°C - supports continuous operation in compact PCB layouts with adequate thermal relief |
| Reverse Leakage (IR) | 1 μA max at VR = 18.8 V - enables high-impedance bias networks without significant error current |
| Junction Temperature (Tj) | 175°C max - allows reliable operation in industrial ambient environments up to +125°C with derating |
| Package | DO-35 (JEITA GRZZ0002ZB-A) - industry-standard axial leaded package compatible with manual and wave soldering |
Pinout & Package
Package: DO-35 glass axial-leaded package with orange body color and navy-blue cathode band. Total mass ≈ 0.13 g. Dimensions per JEITA code: φD = 2.0 mm, E = 4.2 mm, L = 26.0 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Zener breakdown terminal | Connected to higher potential node; reverse-biased operation requires cathode at voltage ≥ VZ relative to anode |
| 2 (Anode) | Reference ground/reference return | Typically tied to circuit common; establishes stable low-impedance reference point for bias or feedback |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise Zener operation | Diode noise level ≈1/3–1/10 that of standard HZ series - directly reduces RMS noise in precision voltage references |
| Tight zener voltage tolerance | ±0.5 V total spread (22.3–23.3 V) at 0.5 mA - enables accurate calibration without post-trim in production |
| Low dynamic impedance | 20.0 Ω max - maintains regulation stability across ±10% load current variation in unregulated supplies |
| High thermal stability | Temperature coefficient ≈ −0.06 %/°C (−13 mV/°C) - predictable drift behavior supports compensation in multi-device references |
| Robust reliability | Rated junction temperature up to 175°C and storage range −55°C to +175°C - qualified for extended-life industrial deployments |
Applications
| Industrial Sensor Signal Conditioning | Medical Instrumentation Reference |
|---|---|
|
Use Scenario: Biasing bridge sensors and powering low-noise op-amp stages in portable blood glucose meters and ECG front-ends. IC Role / Device Role / Timing Role: Provides ultra-low-noise, stable 22 V reference for ADC driver amplifiers and transducer excitation. Use Value: Enables <10 μVpp noise floor in signal chain due to HZ22-3LTD-E's verified low-noise Zener structure. |
Use Scenario: Generating calibrated reference voltages in battery-powered diagnostic analyzers requiring long-term stability. IC Role / Device Role / Timing Role: Functions as primary shunt reference in isolated DC-DC feedback loops and analog front-end calibration circuits. Use Value: Delivers <±0.5% initial accuracy and <50 ppm/°C drift over 0–70°C - meeting Class II medical device reference requirements. |
| Test & Measurement Equipment | Programmable Power Supply Calibration |
|
Use Scenario: Precision voltage reference in benchtop multimeters and automated test equipment (ATE) source-measure units. IC Role / Device Role / Timing Role: Supplies regulated bias to DAC output buffers and comparator hysteresis networks. Use Value: Maintains <0.01% line regulation via 20 Ω rd, reducing calibration drift during AC line fluctuations. |
Use Scenario: Setting accurate output thresholds in digitally controlled lab power supplies with analog feedback paths. IC Role / Device Role / Timing Role: Acts as programmable setpoint reference in voltage-controlled current sources and foldback protection circuits. Use Value: Supports 12-bit resolution setpoints (±20 mV) using HZ22-3LTD-E's tight 1.0 V total VZ spread at 0.5 mA. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor MMBZ5247BLT1G | Zener voltage 22 V ±5%, rd = 35 Ω, SOT-23 package, 200 mW Pd | SMT-only; higher dynamic resistance increases load regulation error by ~75% vs. HZ22-3LTD-E | Preferred only for space-constrained PCBs where DO-35 mounting is impractical |
| Vishay BZX84-C22LT1G | Zener voltage 22 V ±5%, rd = 50 Ω, SOT-23, 300 mW Pd, no low-noise specification | Lacks documented noise reduction; unsuitable for sub-100 nV/√Hz applications | Select only for cost-sensitive, non-critical reference roles where noise is not specified |
Compared with MMBZ5247BLT1G and BZX84-C22LT1G, the HZ22-3LTD-E delivers superior noise performance, lower dynamic impedance, and higher power handling - making it the preferred choice for metrology-grade references despite its through-hole form factor.
Availability
HZ22-3LTD-E is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, medical instrumentation reference, and test & measurement equipment requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for HZ22-3LTD-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 Japanese semiconductor manufacturer specializing in microcontrollers, analog and power devices, and system-on-chip solutions for industrial, automotive, and infrastructure markets.
The HZ-L Series was developed specifically for low-noise, high-stability voltage reference applications in precision analog systems - addressing demand for improved signal integrity in next-generation instrumentation and medical electronics.
FAQ
What is the zener voltage tolerance of HZ22-3LTD-E?
The HZ22-3LTD-E has a guaranteed zener voltage range of 22.3 V minimum to 23.3 V maximum when tested at IZ = 0.5 mA, corresponding to a total spread of 1.0 V. This tolerance is specified in the Electrical Characteristics table on page 3 of REJ03G0182-0300 Rev.3.00 and reflects factory binning for the "3L" variant within the HZ-L family.
Does HZ22-3LTD-E meet RoHS requirements?
Yes, HZ22-3LTD-E complies with the EU RoHS Directive as confirmed by Renesas Electronics' environmental compliance documentation. The device contains no lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls (PBB), or polybrominated diphenyl ethers (PBDE), and is rated for lead-free soldering processes per J-STD-020.
What is the maximum allowable reverse current before breakdown in HZ22-3LTD-E?
The HZ22-3LTD-E specifies a maximum reverse leakage current (IR) of 1 μA at VR = 18.8 V, per the Electrical Characteristics table. This value is measured well below the nominal zener voltage and confirms minimal off-state conduction - critical for high-impedance bias networks where leakage-induced errors must be minimized.
Can HZ22-3LTD-E be used in surface-mount designs?
No - HZ22-3LTD-E uses a DO-35 axial-leaded glass package (JEITA GRZZ0002ZB-A) and is not compatible with SMT assembly. For surface-mount alternatives, consider SOT-23 Zeners like MMBZ5247BLT1G, though they lack the low-noise performance and 400 mW rating of the HZ22-3LTD-E.
How does the temperature coefficient of HZ22-3LTD-E affect long-term reference stability?
The HZ22-3LTD-E exhibits a temperature coefficient of approximately −0.06 %/°C (≈−13 mV/°C) in the 22 V range, as shown in Figure 2 of REJ03G0182-0300. This predictable negative drift allows designers to compensate using positive-TC components, achieving <±20 ppm/°C net drift in composite references - essential for 16-bit+ data acquisition systems.
HZ22-3LTD-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:
- -
HZ22-3LTD-E FAQ
1.How can I place an order for HZ22-3LTD-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZ22-3LTD-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 HZ22-3LTD-E reliable?
The price and inventory of HZ22-3LTD-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZ22-3LTD-E is usually 5 days.
3.What payment methods are accepted for HZ22-3LTD-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZ22-3LTD-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZ22-3LTD-E?
HZ22-3LTD-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZ22-3LTD-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 HZ22-3LTD-E?
For technical support, including HZ22-3LTD-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZ22-3LTD-E requirements.
6.How does Aetrix verify that HZ22-3LTD-E is sourced from the original manufacturer or authorized distributors?
All HZ22-3LTD-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 HZ22-3LTD-E meets industry standards.
7.What is the process for return or replacement of HZ22-3LTD-E?
All HZ22-3LTD-E units undergo pre-shipment inspection (PSI). If there is an issue with HZ22-3LTD-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 HZ22-3LTD-E part is unused and in its original packaging.
Return procedure for HZ22-3LTD-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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