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Renesas HZS33-3LTA-E
- Part No.:
- HZS33-3LTA-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZS33-3LTA-E.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:15,000
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Product details
Overview
HZS33-3LTA-E from Renesas Electronics is a silicon planar Zener diode optimized for low-noise voltage regulation in precision analog and stabilized power supply circuits, with a nominal zener voltage of 33.2–34.6 V at 0.5 mA test current, 250 Ω dynamic impedance, and 400 mW power dissipation rating.
For engineers reviewing the HZS33-3LTA-E datasheet, HZS33-3LTA-E pinout, HZS33-3LTA-E application, or HZS33-3LTA-E equivalent, key selection criteria include zener voltage tolerance (±2.1% at 33.9 V nominal), low noise performance (~1/3–1/10 of HZ series), thermal coefficient behavior near zero crossing (~0.02%/°C at 33 V), and suitability for high-speed automatic insertion on 5 mm-pitch PCBs.
Technical Context
This device operates as a two-terminal shunt regulator with DC-tested zener breakdown characteristics, specified under 0.5 mA zener current and 1 V reverse bias for leakage measurement. Its low dynamic resistance (250 Ω max) supports stable regulation under moderate load transients, while junction temperature rating up to 200°C enables operation in thermally demanding environments.
The HZS33-3LTA-E belongs to the HZS-L Series featuring planar diffusion construction, black cathode band marking, and MHD package (JEITA GRZZ0002ZC-A). It exhibits a zener voltage temperature coefficient near zero (~0.02%/°C) at its operating point, minimizing drift across ambient temperature ranges from −55°C to +175°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 33.2–34.6 V at IZ = 0.5 mA - defines precise regulation threshold for feedback loops in linear regulators or reference stages. |
| Dynamic Resistance (rd) | ≤250 Ω at IZ = 0.5 mA - ensures minimal output voltage variation under small-signal load changes. |
| Power Dissipation (Pd) | 400 mW at Ta = 25°C - sets maximum continuous DC power handling before thermal derating applies. |
| Reverse Leakage Current (IR) | ≤1 μA at VR = 27 V - guarantees negligible parasitic current draw in high-impedance bias networks. |
| Zener Voltage Temp. Coeff. | ~0.02%/°C at 33 V - indicates near-zero drift region ideal for stable references over industrial temperature range. |
| Junction Temperature (Tj) | 200°C maximum - allows reliable operation in enclosed or high-ambient thermal environments without forced cooling. |
| Package | MHD (JEITA GRZZ0002ZC-A) - standardized 2-pin axial lead package with 5 mm pitch compatibility for automated assembly. |
Pinout & Package
The HZS33-3LTA-E is housed in an MHD axial-lead package (JEITA code GRZZ0002ZC-A), with 2.0 mm body diameter, 26.0 mm overall length, and 0.4 mm lead diameter. Cathode identified by black band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Zener breakdown terminal | Connected to regulated output node; reverse-biased to maintain fixed voltage drop across load. |
| 2 (Anode) | Reference return path | Typically tied to circuit ground or common return; completes current path during regulation. |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise zener operation | Noise level ~1/3–1/10 that of legacy HZ series - critical for audio preamps, sensor signal conditioning, and metrology references. |
| Stable voltage regulation | ±2.1% VZ tolerance at 33.9 V nominal - enables tight-set reference points without post-calibration trimming. |
| High thermal resilience | Rated to 200°C junction temperature - supports use in engine control units, industrial motor drives, and sealed power modules. |
| Automated assembly compatibility | 5 mm pitch axial leads per JEITA GRZZ0002ZC-A - ensures reliable placement and soldering in high-volume SMT-compatible through-hole lines. |
| Low leakage performance | ≤1 μA at 27 V reverse bias - preserves accuracy in high-impedance divider networks and battery-backed circuits. |
Applications
| Industrial Power Supply Reference | Audio Equipment Voltage Clamp |
|---|---|
Use Scenario: Precision ±1% output regulation in isolated DC-DC converter feedback paths requiring long-term stability and low drift. IC Role / Device Role / Timing Role: Shunt voltage reference providing error amplifier input for optocoupler-coupled secondary-side regulation. Use Value: Near-zero temperature coefficient at 33 V minimizes output drift over −40°C to +85°C ambient, reducing need for compensation circuitry. | Use Scenario: Input stage protection and headroom limiting in professional microphone preamplifiers and analog mixing consoles. IC Role / Device Role / Timing Role: Low-noise clamping diode limiting peak signal excursions without introducing audible hiss or distortion. Use Value: 1/10 noise level versus standard HZ-series diodes prevents audible broadband noise coupling into high-gain analog signal chains. |
| Test & Measurement Instrumentation | Automotive ECU Sensor Biasing |
Use Scenario: Stable excitation source for precision RTD or bridge-based strain gauge measurements in portable calibrators. IC Role / Device Role / Timing Role: Low-drift, low-leakage voltage reference establishing known bias current for ratiometric sensing topologies. Use Value: ≤1 μA reverse leakage avoids loading high-impedance sensor bridges, preserving measurement linearity and resolution. | Use Scenario: Supply rail stabilization for Hall-effect position sensors and knock detection amplifiers in engine control modules. IC Role / Device Role / Timing Role: Secondary shunt regulator maintaining clean 33 V bias under load dump and cold-crank transients. Use Value: 400 mW power rating and 200°C junction rating allow sustained operation during extended high-temperature engine runtime. |
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 |
|---|---|---|---|
| BZX85C33 (Nexperia) | 33 V nominal, ±5% tolerance, 1.3 W Pd, 35 Ω rd, DO-41 package | Higher power and lower impedance but wider VZ tolerance; suited for less precision-critical regulation | Select when higher surge capability and tighter dynamic impedance outweigh need for low-noise and tight VZ spec. |
| 1N5257B (ON Semiconductor) | 33 V nominal, ±5% tolerance, 500 mW Pd, 35 Ω rd, DO-35 package | Lower noise than BZX85 but still higher than HZS-L; lacks documented low-noise optimization and MHD mechanical specs | Choose where DO-35 footprint is required and moderate noise performance suffices, but not for metrology-grade designs. |
Compared with BZX85C33 and 1N5257B, the HZS33-3LTA-E delivers superior voltage accuracy (±2.1% vs. ±5%), industry-leading low-noise performance, and JEITA-standardized MHD packaging for automated insertion-making it optimal for precision analog references where stability, noise floor, and manufacturing repeatability are jointly critical.
Availability
HZS33-3LTA-E is available at Aetrix Electronics and suitable for industrial power supplies, audio signal conditioning, test equipment references, and automotive ECU biasing requiring stable component supply with full traceability and lifecycle support.
Supply support for HZS33-3LTA-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 mixed-signal solutions for automotive, industrial, and infrastructure markets.
The HZS-L Series was developed specifically for low-noise, high-stability voltage reference applications in precision analog systems-emphasizing reduced diode noise, tight zener voltage tolerance, and robust thermal performance in axial-leaded packages.
FAQ
What is the exact zener voltage range for HZS33-3LTA-E?
The HZS33-3LTA-E has a guaranteed zener voltage range of 33.2 V to 34.6 V when tested at IZ = 0.5 mA and Ta = 25°C. This corresponds to a nominal value of 33.9 V with ±2.1% tolerance, confirmed in Renesas' REJ03G0166-0300 datasheet revision 3.00.
Does HZS33-3LTA-E support high-temperature operation?
Yes, HZS33-3LTA-E is rated for junction temperatures up to 200°C and storage temperatures from −55°C to +175°C. Its planar silicon construction and MHD package enable reliable operation in engine compartments, industrial motor controls, and sealed power converters where thermal management is constrained.
Is HZS33-3LTA-E suitable for low-noise audio applications?
Yes, the HZS33-3LTA-E is explicitly engineered for low-noise use: its noise level is approximately 1/3 to 1/10 that of the legacy HZ series. This makes HZS33-3LTA-E appropriate for clamping, biasing, and reference functions in microphone preamplifiers, analog synthesizers, and high-fidelity ADC/DAC power rails.
What package type does HZS33-3LTA-E use, and is it compatible with automated assembly?
HZS33-3LTA-E uses the MHD axial-lead package (JEITA code GRZZ0002ZC-A), with standardized 5 mm lead pitch. It is explicitly qualified for high-speed automatic insertion, as noted in the "Ordering Information" section of the Renesas datasheet, supporting efficient through-hole manufacturing.
How does the temperature coefficient of HZS33-3LTA-E compare to other 33 V Zeners?
HZS33-3LTA-E exhibits a zener voltage temperature coefficient of approximately +0.02%/°C near its 33.9 V operating point - significantly lower than typical ±0.05%/°C to ±0.1%/°C for general-purpose 33 V Zeners. This near-zero drift behavior is documented in Figure 2 of the REJ03G0166-0300 datasheet and enhances long-term stability in unregulated thermal environments.
HZS33-3LTA-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:
- -
HZS33-3LTA-E FAQ
1.How can I place an order for HZS33-3LTA-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZS33-3LTA-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 HZS33-3LTA-E reliable?
The price and inventory of HZS33-3LTA-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZS33-3LTA-E is usually 5 days.
3.What payment methods are accepted for HZS33-3LTA-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZS33-3LTA-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZS33-3LTA-E?
HZS33-3LTA-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZS33-3LTA-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 HZS33-3LTA-E?
For technical support, including HZS33-3LTA-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZS33-3LTA-E requirements.
6.How does Aetrix verify that HZS33-3LTA-E is sourced from the original manufacturer or authorized distributors?
All HZS33-3LTA-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 HZS33-3LTA-E meets industry standards.
7.What is the process for return or replacement of HZS33-3LTA-E?
All HZS33-3LTA-E units undergo pre-shipment inspection (PSI). If there is an issue with HZS33-3LTA-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 HZS33-3LTA-E part is unused and in its original packaging.
Return procedure for HZS33-3LTA-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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