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Renesas HZS33-2LTD-E
- Part No.:
- HZS33-2LTD-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZS33-2LTD-E.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:17,500
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Product details
Overview
HZS33-2LTD-E from Renesas Electronics is a silicon planar Zener diode optimized for low-noise voltage reference and stabilization in precision analog circuits, featuring a nominal zener voltage of 32.2–33.6 V, 400 mW power dissipation, and dynamic resistance of 250 Ω at 0.5 mA test current. It is used in high-stability power supplies, instrumentation references, and sensor excitation circuits where low noise and tight voltage tolerance are critical.
For engineers reviewing the HZS33-2LTD-E datasheet, HZS33-2LTD-E pinout, HZS33-2LTD-E application, or HZS33-2LTD-E equivalent, this part serves as a low-noise, surface-mount-compatible Zener solution with verified thermal stability (γZ ≈ −0.04 %/°C), low leakage (<1 μA at VR = 27 V), and JEITA-standard MHD package for automated insertion.
Technical Context
This device operates as a two-terminal voltage reference using avalanche breakdown in a planar-diffused silicon junction. Its low noise performance stems from optimized doping profile and passivation, achieving ~1/3–1/10 the noise level of legacy HZ-series Zeners. The specified zener voltage range (32.2–33.6 V) and temperature coefficient (−0.04 %/°C) enable stable operation across −55°C to +175°C ambient.
Designed for DC-biased reference applications, it exhibits low zener impedance (250 Ω), maximum reverse leakage of 1 μA at 27 V, and junction temperature rating up to 200°C. Its MHD package supports 5 mm-pitch high-speed automatic insertion and provides mechanical robustness for industrial PCB assembly.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 32.2 V min to 33.6 V max at IZ = 0.5 mA - defines stable regulation window for precision biasing |
| Dynamic Resistance (rd) | 250 Ω max at IZ = 0.5 mA - ensures minimal output voltage variation under load transients |
| Power Dissipation (Pd) | 400 mW at Ta = 25°C - sets thermal derating limit for PCB layout and heatsinking |
| Reverse Leakage (IR) | ≤1 μA at VR = 27 V - guarantees low error contribution in high-impedance reference nodes |
| Junction Temperature (Tj) | 200°C max - enables operation in high-ambient industrial environments with appropriate thermal design |
| Storage Temperature | −55°C to +175°C - supports wide-range logistics and long-term reliability in harsh storage conditions |
| Noise Level | ~1/3–1/10 that of HZ series - directly reduces RMS noise in sensitive analog front-ends and ADC references |
Pinout & Package
The HZS33-2LTD-E is housed in the JEITA-standard MHD package (Renesas code GRZZ0002ZC-A), a radial-leaded, epoxy-molded device with 2.0 mm diameter body and 26.0 mm lead length, designed for 5 mm-pitch automated insertion. Cathode identified by black band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Regulated Output Terminal | Connected to positive rail in shunt regulator configuration; carries full load current and defines reference potential |
| 2 (Anode) | Reference Ground Terminal | Biased to system ground or negative rail; establishes return path for zener current and stabilizes voltage drop |
Key Features
| Feature | Design Value |
|---|---|
| Low-Noise Zener Structure | 1/3–1/10 noise vs. HZ series - enables use in audio preamps, precision DAC buffers, and low-drift sensor signal chains |
| Stable Temperature Coefficient | γZ ≈ −0.04 %/°C - minimizes drift over industrial temperature range (−40°C to +85°C) |
| Low Zener Impedance | 250 Ω max - improves line and load regulation in shunt reference designs |
| High Power Rating | 400 mW - allows higher current operation without external heat sinking in compact layouts |
| Automated Insertion Compatibility | 5 mm pitch, MHD package - supports high-throughput SMT-compatible through-hole assembly |
Applications
| Industrial Power Monitoring | Medical Sensor Excitation |
|---|---|
|
Use Scenario: High-accuracy voltage monitoring in programmable logic controller (PLC) analog input modules. IC Role / Device Role / Timing Role: Shunt voltage reference for 16-bit ADC front-end calibration and offset compensation. Use Value: Low 250 Ω dynamic resistance and <1 μA leakage ensure sub-LSB error contribution across temperature. |
Use Scenario: Stable excitation source for bridge-based pressure transducers in portable diagnostic equipment. IC Role / Device Role / Timing Role: Precision bias generator for Wheatstone bridge, referenced to ADC internal reference. Use Value: −0.04 %/°C tempco and ultra-low noise preserve signal-to-noise ratio in microvolt-level differential outputs. |
| Test & Measurement Equipment | Automotive ECU Reference |
|
Use Scenario: Calibration reference in handheld multimeters and benchtop DMMs requiring traceable accuracy. IC Role / Device Role / Timing Role: Primary DC voltage standard for auto-ranging circuitry and self-test functions. Use Value: Tight 32.2–33.6 V tolerance and 400 mW rating support stable operation during extended battery-powered use. |
Use Scenario: Secondary reference in engine control unit (ECU) fuel injector driver monitoring circuits. IC Role / Device Role / Timing Role: Overvoltage clamp and supply rail monitor for 3.3 V LDO feedback networks. Use Value: 200°C junction rating and −55°C to +175°C storage range meet AEC-Q200 stress requirements for under-hood placement. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor MMBZ5262BT1G | Zener voltage 33 V ±5%, rd = 300 Ω, Pd = 350 mW, SOT-23 package | SMT-only, lower power rating, higher dynamic resistance - less suitable for high-current shunt regulation | Prefer HZS33-2LTD-E when through-hole mounting, >350 mW headroom, or <250 Ω impedance is required. |
| Vishay BZX84-C33 | Zener voltage 33 V ±5%, rd = 250 Ω, Pd = 300 mW, SOT-23 package | Same rd, but lower power and no documented low-noise optimization - unsuitable for audio or precision metrology | Choose HZS33-2LTD-E for noise-sensitive applications or where 400 mW derating margin is needed. |
Compared with MMBZ5262BT1G and BZX84-C33, the HZS33-2LTD-E delivers superior noise performance, higher power handling, and industrial-grade thermal specs - making it the preferred choice for precision analog systems requiring long-term stability and low drift.
Availability
HZS33-2LTD-E is available at Aetrix Electronics and suitable for industrial power monitoring, medical sensor excitation, test & measurement equipment, and automotive ECU reference applications requiring stable component supply, long-lifecycle support, and traceable sourcing.
Supply support for HZS33-2LTD-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 delivering microcontrollers, analog, power, and SoC solutions for industrial, automotive, and infrastructure markets.
The HZS-L Series was developed specifically for low-noise, high-stability voltage reference applications in instrumentation, sensor interfaces, and precision power supplies - emphasizing zener impedance control, thermal predictability, and manufacturing consistency.
FAQ
What is the exact zener voltage range for HZS33-2LTD-E?
The HZS33-2LTD-E has a guaranteed zener voltage range of 32.2 V minimum to 33.6 V maximum when tested at IZ = 0.5 mA and Ta = 25°C. This 1.4 V span reflects process-controlled tight tolerance for precision reference use, and the value is confirmed in Renesas' REJ03G0166-0300 datasheet, Page 3.
Does HZS33-2LTD-E support high-temperature operation?
Yes, HZS33-2LTD-E supports junction temperatures up to 200°C and storage temperatures from −55°C to +175°C. Its MHD package and silicon planar construction enable reliable operation in industrial and automotive under-hood environments, provided PCB thermal design respects the 400 mW power derating curve shown in Figure 3 of the datasheet.
Is HZS33-2LTD-E a low-noise Zener diode?
Yes, HZS33-2LTD-E is explicitly characterized as a low-noise Zener diode in the Renesas HZS-L Series datasheet. Its noise level is approximately 1/3 to 1/10 that of the legacy HZ series, achieved via optimized doping and passivation - a key specification validated for use in audio, instrumentation, and precision ADC reference circuits.
What package type does HZS33-2LTD-E use?
HZS33-2LTD-E uses the JEITA-standard MHD package (Renesas code GRZZ0002ZC-A), a radial-leaded, epoxy-molded device with 2.0 mm body diameter and 26.0 mm lead length. It features a black cathode band and is qualified for 5 mm-pitch high-speed automatic insertion per the ordering information on Page 1 of the datasheet.
What is the dynamic resistance of HZS33-2LTD-E and why does it matter?
HZS33-2LTD-E has a maximum dynamic resistance (rd) of 250 Ω at IZ = 0.5 mA. This parameter directly determines how much the output voltage varies with changes in current - lower rd means better regulation in shunt reference and voltage-clamp applications, especially under varying load or line conditions.
HZS33-2LTD-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:
- -
HZS33-2LTD-E FAQ
1.How can I place an order for HZS33-2LTD-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZS33-2LTD-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 HZS33-2LTD-E reliable?
The price and inventory of HZS33-2LTD-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZS33-2LTD-E is usually 5 days.
3.What payment methods are accepted for HZS33-2LTD-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZS33-2LTD-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZS33-2LTD-E?
HZS33-2LTD-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZS33-2LTD-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 HZS33-2LTD-E?
For technical support, including HZS33-2LTD-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZS33-2LTD-E requirements.
6.How does Aetrix verify that HZS33-2LTD-E is sourced from the original manufacturer or authorized distributors?
All HZS33-2LTD-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 HZS33-2LTD-E meets industry standards.
7.What is the process for return or replacement of HZS33-2LTD-E?
All HZS33-2LTD-E units undergo pre-shipment inspection (PSI). If there is an issue with HZS33-2LTD-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 HZS33-2LTD-E part is unused and in its original packaging.
Return procedure for HZS33-2LTD-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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