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Renesas HZS22-3LTD-E
- Part No.:
- HZS22-3LTD-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZS22-3LTD-E.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:20,147
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Product details
Overview
HZS22-3LTD-E from Renesas Electronics is a silicon planar Zener diode engineered for low-noise voltage regulation in precision analog and stabilized power supply circuits, with a nominal zener voltage of 22.3 V to 23.3 V, dynamic resistance of 20.0 Ω at 0.5 mA test current, and maximum power dissipation of 400 mW in the MHD package.
For engineers reviewing the HZS22-3LTD-E datasheet, HZS22-3LTD-E pinout, HZS22-3LTD-E application, or HZS22-3LTD-E equivalent, this device is selected for noise-sensitive reference designs requiring stable DC biasing, low-leakage clamping, and tight zener voltage tolerance across industrial temperature ranges.
Technical Context
The HZS22-3LTD-E operates as a two-terminal voltage reference diode with cathode-anode polarity, optimized for low-noise performance via reduced diode noise (≈1/3–1/10 that of the legacy HZ series) and low zener impedance. Its junction temperature rating of 200°C supports high-reliability operation in thermally constrained PCB layouts.
Designed for DC-biased applications only (per datasheet Note 1), it exhibits a zener voltage temperature coefficient near zero - typical for 22 V-class devices - and maintains stable regulation under reverse-bias conditions up to its 400 mW power limit, with leakage current limited to ≤1 μA at VR = 17.5 V.
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 DC reference level for feedback loops and sensor biasing. |
| 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 - sets thermal design boundary for trace width and copper pour requirements. |
| Reverse Leakage (IR) | ≤1 μA max at VR = 17.5 V - critical for ultra-low-power standby circuits and high-impedance node protection. |
| Junction Temperature (Tj) | 200°C max - enables operation in high-ambient environments such as industrial motor drives and power converters. |
| Storage Temperature | −55°C to +175°C - supports extended deployment in automotive under-hood and outdoor telecom equipment. |
Pinout & Package
The HZS22-3LTD-E is housed in the MHD package (JEITA code GRZZ0002ZC-A), a radial leaded, epoxy-molded, 5 mm-pitch through-hole device with cathode band marking. Mass: 0.084 g. Dimensions: φD = 2.0 mm (nom), φb = 0.4 mm (lead diameter), L = 26.0 mm (lead length).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | High-side reference terminal | Connected to regulated positive rail; carries reverse-bias current during regulation. |
| 2 (Anode) | Low-side return terminal | Typically grounded or tied to negative supply; completes current path for zener conduction. |
Key Features
| Feature | Design Value |
|---|---|
| Noise performance | Diode noise ≈1/3–1/10 lower than HZ series - directly improves SNR in precision ADC references and op-amp bias networks. |
| Zener impedance control | 20.0 Ω max at 0.5 mA - enables stable regulation even with varying source impedance in discrete LDO pre-regulators. |
| Low leakage | ≤1 μA at 17.5 V reverse bias - preserves battery life in always-on monitoring circuits and reduces error in high-Z voltage dividers. |
| Voltage range coverage | 22.3–23.3 V zener band - targets mid-range industrial supply rails (e.g., 24 V systems) where ±5% tolerance is required. |
Applications
| Industrial Power Supply Reference | Audio Amplifier Bias Stabilization |
|---|---|
|
Use Scenario: Providing stable 22.5 V reference for feedback divider in 24 V offline SMPS. IC Role / Device Role / Timing Role: Two-terminal voltage reference regulating error amplifier input. Use Value: Low dynamic resistance (20 Ω) minimizes load-induced drift; low noise prevents audible hum coupling into control loop. |
Use Scenario: Setting quiescent current in Class-AB audio output stage using discrete transistors. IC Role / Device Role / Timing Role: Zener-based VBE multiplier for thermal tracking bias network. Use Value: Tight 22.3–23.3 V tolerance ensures consistent bias point across units; low leakage avoids thermal runaway risk. |
| Test Equipment Voltage Calibration | Automotive Sensor Signal Conditioning |
|
Use Scenario: Calibrating 20–25 V range on bench multimeter front-end attenuator/divider. IC Role / Device Role / Timing Role: Primary DC reference source for analog-to-digital conversion scaling. Use Value: Stable zener voltage over −40°C to +85°C ambient enables traceable calibration without active compensation. |
Use Scenario: Regulating excitation voltage for resistive temperature sensors (RTDs) in engine control modules. IC Role / Device Role / Timing Role: Low-drift, low-noise bias generator for bridge circuitry. Use Value: Junction temperature rating of 200°C allows placement near hot ECU components without derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5255B (ON Semiconductor) | Zener voltage 22.0–23.1 V; rd = 23 Ω; Pd = 500 mW; higher noise than HZS-L series. | Higher power margin but lacks low-noise optimization - suitable where cost outweighs SNR requirements. | Select when board space permits larger DO-35 package and noise floor is non-critical. |
| BZX84-C22 (Diodes Inc.) | Zener voltage 20.8–23.3 V; rd = 50 Ω; Pd = 300 mW; SOT-23 surface-mount package. | Smaller footprint but higher impedance and leakage - appropriate for compact consumer-grade designs. | Choose for space-constrained PCBs where 50 Ω impedance and 300 mW limit are acceptable trade-offs. |
Compared with 1N5255B and BZX84-C22, the HZS22-3LTD-E delivers superior noise performance and tighter voltage tolerance in a through-hole MHD package, making it optimal for industrial and test equipment where long-term stability and signal integrity are prioritized over miniaturization or raw power headroom.
Availability
HZS22-3LTD-E is available at Aetrix Electronics and suitable for industrial power supplies, precision instrumentation, and automotive sensor conditioning requiring stable component supply with full traceability and lifecycle continuity.
Supply support for HZS22-3LTD-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 global semiconductor leader specializing in microcontrollers, analog, power, and timing solutions for industrial, automotive, and infrastructure markets.
The HZS-L Series was developed by Renesas specifically for low-noise, high-stability Zener reference applications in industrial power and measurement systems - emphasizing voltage accuracy, thermal robustness, and noise reduction over general-purpose regulation.
FAQ
What is the exact zener voltage range specified for HZS22-3LTD-E?
The HZS22-3LTD-E has a guaranteed zener voltage range of 22.3 V (minimum) to 23.3 V (maximum) when tested at IZ = 0.5 mA and Ta = 25°C. This 1.0 V span reflects tight process control for precision reference use, and the value is confirmed in the official Renesas datasheet REJ03G0166-0300 Rev.3.00.
Is HZS22-3LTD-E suitable for surface-mount assembly?
No, the HZS22-3LTD-E uses the MHD radial through-hole package (JEITA GRZZ0002ZC-A) with 5 mm lead pitch and 26 mm lead length - designed for wave or selective soldering, not reflow. It is incompatible with standard SMT pick-and-place or reflow profiles. For SMT alternatives, consider BZX84-C22 or MMBZ5255B.
What is the maximum allowable reverse current before breakdown for HZS22-3LTD-E?
The HZS22-3LTD-E does not specify a "breakdown threshold" - it is a Zener diode intended for controlled reverse conduction. Its rated test current is 0.5 mA, and it can safely conduct up to 1 mA (per absolute max ratings) while maintaining regulation. Exceeding 400 mW power dissipation risks thermal failure regardless of current magnitude.
Does HZS22-3LTD-E have a specified temperature coefficient?
The HZS22-3LTD-E belongs to the 22 V class shown in Figure 2 of the datasheet, where γZ is approximately ±0.02 %/°C (±0.0044 V/°C). While not individually characterized per unit, this low coefficient is inherent to the silicon planar structure and enables stable reference performance across −40°C to +125°C operating range.
Can HZS22-3LTD-E be used in place of HZS22-3L?
Yes - HZS22-3LTD-E is a Renesas-authorized variant of HZS22-3L with identical electrical specifications, MHD package, and pinout. The "-E" suffix denotes enhanced quality screening per Renesas internal standards, including tighter parameter binning and extended reliability testing, while retaining full functional and mechanical compatibility with HZS22-3L.
HZS22-3LTD-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:
- -
HZS22-3LTD-E FAQ
1.How can I place an order for HZS22-3LTD-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZS22-3LTD-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 HZS22-3LTD-E reliable?
The price and inventory of HZS22-3LTD-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZS22-3LTD-E is usually 5 days.
3.What payment methods are accepted for HZS22-3LTD-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZS22-3LTD-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZS22-3LTD-E?
HZS22-3LTD-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZS22-3LTD-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 HZS22-3LTD-E?
For technical support, including HZS22-3LTD-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZS22-3LTD-E requirements.
6.How does Aetrix verify that HZS22-3LTD-E is sourced from the original manufacturer or authorized distributors?
All HZS22-3LTD-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 HZS22-3LTD-E meets industry standards.
7.What is the process for return or replacement of HZS22-3LTD-E?
All HZS22-3LTD-E units undergo pre-shipment inspection (PSI). If there is an issue with HZS22-3LTD-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 HZS22-3LTD-E part is unused and in its original packaging.
Return procedure for HZS22-3LTD-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HZS22-3LTD-E Tags
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