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Renesas HZS12C2LTD-E
- Part No.:
- HZS12C2LTD-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZS12C2LTD-E.pdf
- Description:
- DIODE ZENER
- Quantity:
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Inventory:10,000
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Product details
Overview
HZS12C2LTD-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 13.75 V (midpoint of 13.5–14.0 V range), dynamic resistance of 80 Ω at 0.5 mA test current, and maximum power dissipation of 400 mW. It is used in low-drift power supply feedback paths, sensor excitation references, and instrumentation front-ends where noise suppression and thermal stability are critical.
For engineers reviewing the HZS12C2LTD-E datasheet, HZS12C2LTD-E pinout, HZS12C2LTD-E application, or HZS12C2LTD-E equivalent, this device serves as a low-noise, medium-voltage Zener reference with verified 80 Ω impedance, −55 to +175 °C storage range, and MHD package compatibility for high-speed automated insertion in industrial and test equipment designs.
Technical Context
This device operates as a two-terminal, DC-biased voltage reference using silicon planar Zener breakdown. Its low noise level-approximately 1/3 to 1/10 that of the legacy HZ series-is achieved through optimized junction geometry and process control, not external filtering. The zener voltage exhibits a temperature coefficient near zero at ~13.7 V, confirmed by Figure 2 in the datasheet.
It is rated for 400 mW power dissipation at 25 °C ambient, derating linearly above 25 °C per Figure 3, with a maximum junction temperature of 200 °C. Reverse leakage is limited to ≤1 μA at VR = 12.5 V, and dynamic impedance remains stable across its specified 0.5 mA test current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 13.5–14.0 V at IZ = 0.5 mA - defines stable regulation point for mid-range analog references |
| Dynamic Resistance (rd) | 80 Ω max at IZ = 0.5 mA - ensures minimal output voltage shift under load transients |
| Power Dissipation (Pd) | 400 mW max at Ta = 25 °C - supports compact PCB layout without forced cooling in low-power systems |
| Junction Temperature (Tj) | 200 °C max - enables operation in thermally demanding industrial environments |
| Storage Temperature | −55 to +175 °C - compatible with reflow, conformal coating, and extended outdoor deployment |
| Reverse Leakage (IR) | ≤1 μA at VR = 12.5 V - preserves accuracy in high-impedance bias networks |
Pinout & Package
The HZS12C2LTD-E is housed in the MHD package (JEITA code GRZZ0002ZC-A), a radial leaded, epoxy-molded case with 2.0 mm diameter body and 26.0 mm lead length, designed for 5 mm pitch automatic insertion. Cathode is marked by a black band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Zener breakdown terminal | Connected to regulated output node; polarity-sensitive-reverse bias required for conduction |
| 2 (Anode) | Reference ground return | Completes bias path; must be tied to system ground or feedback node with minimal trace inductance |
Key Features
| Feature | Design Value |
|---|---|
| Low diode noise | 1/3–1/10 of HZ series - directly reduces RMS noise in precision ADC references and op-amp biasing |
| Low zener impedance | 80 Ω max - maintains regulation accuracy under varying load currents up to 1 mA |
| Wide zener voltage range | 13.5–14.0 V - targets applications needing stable mid-voltage reference near 13.7 V zero-TC point |
| High reliability packaging | MHD radial leads with 0.084 g mass - supports wave soldering and mechanical shock resistance in industrial assemblies |
Applications
| Industrial Power Supply Feedback | Precision Sensor Excitation |
|---|---|
Use Scenario: Regulating output of isolated DC-DC converters in PLC power modules. IC Role / Device Role / Timing Role: Zener reference in TL431-like shunt regulator feedback loop. Use Value: 80 Ω dynamic resistance minimizes output voltage deviation during 10–100 mA load steps. |
Use Scenario: Providing stable excitation voltage to strain gauge bridges in weigh-scale transducers. IC Role / Device Role / Timing Role: Low-noise voltage reference source for ratiometric measurement circuits. Use Value: Ultra-low noise ensures <10 μVpp added noise floor, preserving 16-bit ADC resolution. |
| Test Equipment Reference | Automated Test Fixture Biasing |
Use Scenario: Calibration reference in handheld multimeters and bench DMMs. IC Role / Device Role / Timing Role: Primary DC voltage standard for auto-ranging analog front-end. Use Value: Tight 13.5–14.0 V tolerance and −55 to +175 °C storage rating support field calibration stability. |
Use Scenario: Biasing photodiode preamps in AOI (automated optical inspection) systems. IC Role / Device Role / Timing Role: Low-leakage (≤1 μA) reference enabling high-impedance transimpedance gain. Use Value: Sub-μA reverse current prevents signal offset drift in picoamp-level current sensing. |
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 MMBZ5242B | Zener voltage 13 V ±5%, rd = 17 Ω @ 20 mA, Pd = 350 mW, SOT-23 package | Higher test current (20 mA vs. 0.5 mA) shifts operating point; lower power rating limits thermal headroom | Select when board space is constrained and higher test current is acceptable in feedback loop design |
| Vishay BZX84-C13 | Zener voltage 13 V ±5%, rd = 30 Ω @ 5 mA, Pd = 300 mW, SOT-23 package | Lower voltage (13 V vs. 13.75 V), tighter tolerance but higher noise than HZS-L series | Choose for cost-sensitive consumer-grade references where 0.75 V lower voltage and higher noise are acceptable |
Compared with MMBZ5242B and BZX84-C13, the HZS12C2LTD-E delivers superior low-noise performance and higher power margin in through-hole MHD packaging, making it preferred for industrial-grade analog references where long-term stability and thermal robustness outweigh miniaturization needs.
Availability
HZS12C2LTD-E is available at Aetrix Electronics and suitable for industrial power supplies, precision sensor interfaces, and test equipment requiring stable component supply with full traceability and lifecycle continuity.
Supply support for HZS12C2LTD-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, and power devices for industrial, automotive, and infrastructure markets.
The HZS-L Series was developed specifically for low-noise, high-stability Zener reference applications in test and measurement, industrial automation, and precision analog systems-emphasizing noise reduction over generic voltage regulation.
FAQ
What is the exact zener voltage range for HZS12C2LTD-E?
The HZS12C2LTD-E has a guaranteed zener voltage range of 13.5 V to 14.0 V when tested at IZ = 0.5 mA and Ta = 25 °C, per the Electrical Characteristics table on page 3 of the REJ03G0166-0300 datasheet. This 0.5 V span reflects factory binning for the "C2" variant within the HZS12 family, and the typical value is 13.75 V.
Is HZS12C2LTD-E RoHS compliant?
Yes, HZS12C2LTD-E is RoHS compliant per Renesas' environmental policy and EU Directive 2011/65/EU. The device contains no lead, mercury, cadmium, hexavalent chromium, PBB, or PBDE above threshold limits, and its MHD package uses lead-free solder-compatible terminations as confirmed in Renesas' material declarations.
What is the maximum allowable reverse current before breakdown in HZS12C2LTD-E?
The HZS12C2LTD-E specifies a maximum reverse leakage current (IR) of 1 μA at VR = 12.5 V and Ta = 25 °C. This value is measured well below the zener knee and confirms minimal parasitic conduction prior to regulation onset-critical for high-impedance bias networks.
Can HZS12C2LTD-E replace HZS12C1L or HZS12C3L in existing designs?
Yes, HZS12C2LTD-E can substitute for HZS12C1L (13.2–13.7 V) or HZS12C3L (13.8–14.3 V) where the 13.5–14.0 V range meets system tolerance. All three share identical MHD packaging, 400 mW rating, and 80 Ω dynamic resistance-only the zener voltage bin differs, with no impact on thermal or mechanical design.
Does HZS12C2LTD-E have a specified temperature coefficient?
While no single numeric γZ is listed for HZS12C2LTD-E, Figure 2 in the datasheet shows the HZS12B2L and HZS12C2L variants fall near the zero-crossing point (~13.7 V) on the temperature coefficient curve, indicating γZ ≈ 0 mV/°C. This makes HZS12C2LTD-E especially suitable for applications requiring minimal drift over −25 to +85 °C operating ranges.
HZS12C2LTD-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:
- -
HZS12C2LTD-E FAQ
1.How can I place an order for HZS12C2LTD-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZS12C2LTD-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 HZS12C2LTD-E reliable?
The price and inventory of HZS12C2LTD-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZS12C2LTD-E is usually 5 days.
3.What payment methods are accepted for HZS12C2LTD-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZS12C2LTD-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZS12C2LTD-E?
HZS12C2LTD-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZS12C2LTD-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 HZS12C2LTD-E?
For technical support, including HZS12C2LTD-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZS12C2LTD-E requirements.
6.How does Aetrix verify that HZS12C2LTD-E is sourced from the original manufacturer or authorized distributors?
All HZS12C2LTD-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 HZS12C2LTD-E meets industry standards.
7.What is the process for return or replacement of HZS12C2LTD-E?
All HZS12C2LTD-E units undergo pre-shipment inspection (PSI). If there is an issue with HZS12C2LTD-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 HZS12C2LTD-E part is unused and in its original packaging.
Return procedure for HZS12C2LTD-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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