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Renesas HZS11C2LTD-E
- Part No.:
- HZS11C2LTD-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZS11C2LTD-E.pdf
- Description:
- DIODE ZENER
- Quantity:
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Inventory:2,500
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Product details
Overview
HZS11C2LTD-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 11.1–11.6 V at 0.5 mA, dynamic resistance of 80 Ω, maximum power dissipation of 400 mW, and junction temperature rating up to 200°C. It is used in high-stability power supplies, sensor excitation circuits, and instrumentation front-ends where noise-sensitive regulation is required.
For engineers reviewing the HZS11C2LTD-E datasheet, HZS11C2LTD-E pinout, HZS11C2LTD-E application, or HZS11C2LTD-E equivalent, key selection criteria include its low diode noise (≈1/3–1/10 that of HZ series), tight zener voltage tolerance, low leakage current (<1 μA at VR = 2.0 V), and suitability for 5 mm-pitch automated insertion in industrial PCB assembly.
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, enabling stable DC regulation with minimal broadband noise contribution.
The HZS11C2LTD-E exhibits a negative zener voltage temperature coefficient (γZ ≈ −0.02 to −0.04 mV/°C near 11 V), low reverse leakage (<1 μA), and maintains zener impedance below 80 Ω at IZ = 0.5 mA - critical for minimizing output ripple in feedback references.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 11.1–11.6 V at IZ = 0.5 mA - defines precise DC reference level for feedback loops or biasing. |
| Dynamic Resistance (rd) | 80 Ω max at IZ = 0.5 mA - ensures minimal output impedance and good load regulation. |
| Power Dissipation (Pd) | 400 mW max - supports operation in compact SMT-compatible through-hole packages without forced cooling. |
| Reverse Leakage (IR) | ≤1 μA at VR = 2.0 V - reduces error current in high-impedance reference nodes. |
| Junction Temperature (Tj) | −55 to +200°C - enables use in extended-temperature industrial and automotive under-hood applications. |
| Noise Level | ≈1/3–1/10 of HZ series - directly improves SNR in precision ADC references and low-level signal conditioning. |
Pinout & Package
Package: MHD (JEITA code GRZZ0002ZC-A), axial-lead, glass-passivated silicon planar diode with black cathode band. Dimensions: φD = 2.0 mm, L = 26.0 mm, E = 2.4 mm, mass ≈ 0.084 g. Compatible with 5 mm-pitch automatic insertion equipment.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | High-side reference terminal | Connected to regulated output node; polarity must be observed to avoid forward conduction. |
| 2 (Anode) | Low-side reference terminal | Typically grounded or connected to current-limiting resistor; establishes reference current path. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low noise performance | Diode noise reduced to ≈1/3–1/10 of legacy HZ series - critical for high-resolution data acquisition systems. |
| Tight zener voltage tolerance | ±0.25 V window at 11.1–11.6 V - enables accurate calibration without post-trim in factory-set references. |
| Low dynamic impedance | 80 Ω max at 0.5 mA - minimizes voltage shift under varying load or supply conditions. |
| High thermal robustness | 200°C max junction temperature - supports reliable operation in thermally constrained enclosures. |
| Automated assembly compatibility | 5 mm pitch lead spacing - enables high-throughput placement on industrial PCB lines without manual rework. |
Applications
| Industrial Power Supply Reference | Medical Sensor Excitation |
|---|---|
Use Scenario: Stabilized ±12 V dual-rail supply for op-amp-based signal conditioning in PLC analog I/O modules. IC Role / Device Role / Timing Role: Zener diode provides low-drift, low-noise voltage reference for feedback divider networks in linear regulators. Use Value: 80 Ω dynamic resistance and <1 μA leakage ensure ≤0.5 mV output drift over 0–70°C ambient range. |
Use Scenario: Precision excitation source for bridge-type pressure sensors in portable patient monitors. IC Role / Device Role / Timing Role: Acts as stable bias reference for Wheatstone bridge excitation, minimizing common-mode noise coupling. Use Value: Ultra-low noise ensures ≥92 dB SNR in 24-bit sigma-delta ADC front-end, meeting IEC 60601-2-51 requirements. |
| Test & Measurement Calibration | Automotive Engine Control Unit (ECU) |
Use Scenario: On-board reference for self-calibration of multimeter input ranges and DMM reference dividers. IC Role / Device Role / Timing Role: Provides traceable, repeatable DC reference point for auto-zero and gain calibration routines. Use Value: Tight 11.1–11.6 V tolerance and low tempco enable ±0.05% full-scale accuracy over 15–35°C lab environments. |
Use Scenario: Voltage clamp and reference in knock sensor signal conditioning circuit within engine control units. IC Role / Device Role / Timing Role: Protects downstream amplifiers from transients while supplying stable bias for AC-coupled sensor amplification. Use Value: 200°C junction rating and robust glass passivation allow direct mounting near cylinder head without derating. |
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 1N4742A | Zener voltage 12 V ±5%, rd = 9 Ω at 21 mA, Pd = 1 W, higher noise than HZS-L series. | Higher power handling but lacks low-noise optimization; suitable for general-purpose regulation, not precision references. | Select when higher power and looser voltage tolerance are acceptable; avoid where sub-mV stability or low broadband noise is required. |
| Vishay BZX55C11 | Zener voltage 11 V ±5%, rd = 25 Ω at 5 mA, Pd = 500 mW, no published noise spec, JEDEC DO-35 package. | Standard DO-35 footprint; lower dynamic resistance at higher test current but uncharacterized noise performance. | Choose for cost-sensitive, non-critical references where PCB layout constraints favor DO-35; verify noise impact in final design. |
Compared with 1N4742A and BZX55C11, the HZS11C2LTD-E delivers superior noise performance and tighter voltage tolerance at lower test current, making it preferred for precision analog signal chains - though its MHD package requires different board layout and insertion tooling.
Availability
HZS11C2LTD-E is available at Aetrix Electronics and suitable for industrial power supplies, medical sensor interfaces, test equipment calibration, and automotive ECU designs requiring stable component supply with guaranteed long-term continuity.
Supply support for HZS11C2LTD-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 voltage reference applications in precision analog systems - emphasizing reduced diode noise, tight zener tolerance, and robust thermal performance.
FAQ
What is the zener voltage range of the HZS11C2LTD-E?
The HZS11C2LTD-E has a specified zener voltage range of 11.1 V to 11.6 V at a test current of 0.5 mA, measured under DC conditions per Renesas datasheet REJ03G0166-0300 Rev.3.00. This tight tolerance supports high-accuracy voltage referencing without external trimming, and the value remains stable across its rated junction temperature range.
Does the HZS11C2LTD-E have a documented noise specification?
Yes - the HZS11C2LTD-E datasheet states its diode noise level is approximately 1/3 to 1/10 that of the legacy HZ series. While no absolute nV/√Hz figure is provided, this comparative metric is validated across the HZS-L family and confirmed in Renesas' characterization of low-noise operation for precision analog applications.
What is the maximum power dissipation rating for the HZS11C2LTD-E?
The HZS11C2LTD-E has a maximum power dissipation (Pd) rating of 400 mW at Ta = 25°C, with derating above 25°C as shown in Figure 3 of the datasheet. At 70°C ambient, usable power drops to ~280 mW, and the device remains functional up to 200°C junction temperature - critical for thermally demanding industrial deployments.
Is the HZS11C2LTD-E suitable for automotive applications?
The HZS11C2LTD-E is classified as a "Standard" quality grade device per Renesas' quality grading system, intended for industrial, office, and communications equipment - not certified for automotive AEC-Q200 stress testing. For automotive engine control or body electronics, Renesas recommends qualified alternatives such as the RLZ series or consult their automotive product line.
What package type does the HZS11C2LTD-E use, and is it RoHS compliant?
The HZS11C2LTD-E uses the MHD package (JEITA code GRZZ0002ZC-A), an axial-leaded, glass-passivated silicon planar diode with black cathode band. Per Renesas' environmental compliance statements, all HZS-L Series devices manufactured after 2007 meet EU RoHS Directive requirements, including lead-free terminations and compliant packaging materials.
HZS11C2LTD-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:
- -
HZS11C2LTD-E FAQ
1.How can I place an order for HZS11C2LTD-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZS11C2LTD-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 HZS11C2LTD-E reliable?
The price and inventory of HZS11C2LTD-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZS11C2LTD-E is usually 5 days.
3.What payment methods are accepted for HZS11C2LTD-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZS11C2LTD-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZS11C2LTD-E?
HZS11C2LTD-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZS11C2LTD-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 HZS11C2LTD-E?
For technical support, including HZS11C2LTD-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZS11C2LTD-E requirements.
6.How does Aetrix verify that HZS11C2LTD-E is sourced from the original manufacturer or authorized distributors?
All HZS11C2LTD-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 HZS11C2LTD-E meets industry standards.
7.What is the process for return or replacement of HZS11C2LTD-E?
All HZS11C2LTD-E units undergo pre-shipment inspection (PSI). If there is an issue with HZS11C2LTD-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 HZS11C2LTD-E part is unused and in its original packaging.
Return procedure for HZS11C2LTD-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HZS11C2LTD-E Tags
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