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Renesas HZS12C3LTD-E
- Part No.:
- HZS12C3LTD-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZS12C3LTD-E.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:10,000
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Product details
Overview
HZS12C3LTD-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 13.8–14.3 V, 400 mW power dissipation, and dynamic resistance of 80 Ω at 0.5 mA test current - deployed in stabilized power supplies, sensor biasing, and instrumentation front-ends.
For engineers reviewing the HZS12C3LTD-E datasheet, HZS12C3LTD-E pinout, HZS12C3LTD-E application, or HZS12C3LTD-E equivalent, key selection criteria include zener voltage tolerance (±0.5 V), low noise performance (≈1/3–1/10 of HZ series), junction temperature rating (200°C), and MHD package compatibility with 5 mm-pitch automated insertion.
Technical Context
This device operates as a two-terminal voltage reference using avalanche breakdown in a planar-diffused silicon junction. Its low dynamic impedance (80 Ω) and tight zener voltage tolerance (13.8–14.3 V at IZ = 0.5 mA) enable stable regulation under varying load conditions. Temperature coefficient is minimized across the 12–14 V range to support precision biasing.
The HZS12C3LTD-E exhibits reverse leakage ≤1 μA at VR = 11.5 V and maintains low noise spectral density critical for audio preamps and ADC reference buffers. It is rated for junction temperatures up to 200°C and storage from −55°C to +175°C, supporting industrial-grade thermal environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 13.8–14.3 V at IZ = 0.5 mA - defines stable reference point for feedback loops and analog signal conditioning. |
| Dynamic Resistance (rd) | 80 Ω max at IZ = 0.5 mA - ensures minimal output voltage shift under load transients. |
| Power Dissipation (Pd) | 400 mW at Ta = 25°C - supports continuous operation in compact PCB layouts without forced cooling. |
| Reverse Leakage (IR) | ≤1 μA at VR = 11.5 V - preserves accuracy in high-impedance reference nodes and battery-powered systems. |
| Junction Temperature (Tj) | 200°C maximum - enables reliable operation in enclosed enclosures or near heat-generating components. |
| Noise Level | ≈1/3–1/10 of HZ series - reduces broadband voltage noise in sensitive analog stages like microphone preamps. |
| Package | MHD (JEITA GRZZ0002ZC-A) - surface-mount compatible leadframe with 2.0 mm diameter, 26 mm body length, 5 mm pitch insertion ready. |
Pinout & Package
Package: MHD (JEITA code GRZZ0002ZC-A), axial-leaded, silicon planar construction with black cathode band. Dimensions: φD = 2.0 mm (nom), L = 26.0 mm (min), E = 2.4 mm (max), mass ≈ 0.084 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | High-side reference node | Connected to regulated output or feedback network; polarity must be observed to avoid forward conduction. |
| 2 (Anode) | Ground or current sink | Serves as return path for zener current; requires adequate trace width to handle 0.5 mA–10 mA operating range. |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise Zener structure | Reduces RMS voltage noise by factor of 3–10 vs. legacy HZ series - critical for audio and precision measurement references. |
| Tight VZ tolerance | ±0.5 V window (13.8–14.3 V) enables accurate calibration without post-production trimming in 12 V rail monitoring. |
| Low dynamic impedance | 80 Ω at 0.5 mA improves line/load regulation in shunt-regulated supplies feeding op-amp bias networks. |
| High Pd/thermal robustness | 400 mW rating with 200°C Tj allows use in thermally constrained industrial modules without derating below 85°C ambient. |
| Automated assembly compatibility | MHD package supports 5 mm-pitch high-speed insertion - reduces SMT placement cost versus smaller-outline alternatives. |
Applications
| Industrial Power Monitoring | Audio Signal Conditioning |
|---|---|
|
Use Scenario: Real-time monitoring of 12 V DC bus voltage in PLC backplanes with ±1% accuracy requirement. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable threshold for comparator-based overvoltage detection. Use Value: Low dynamic resistance (80 Ω) minimizes voltage droop during transient surges, ensuring consistent trip points across temperature. |
Use Scenario: Biasing JFET-input op-amps in microphone preamplifiers requiring ultra-low-noise DC references. IC Role / Device Role / Timing Role: Low-noise zener source replacing higher-noise TL431-based references in analog signal chains. Use Value: Noise level ≈1/3 that of HZ series directly lowers input-referred noise floor, improving SNR by >3 dB. |
| Medical Sensor Front-Ends | Test & Measurement Equipment |
|
Use Scenario: Providing excitation voltage for bridge-type pressure sensors in portable diagnostic devices. IC Role / Device Role / Timing Role: Precision voltage reference for ratiometric sensor excitation, minimizing gain drift. Use Value: Tight VZ tolerance (±0.5 V) and low tempco reduce calibration burden and extend recalibration intervals. |
Use Scenario: Stable reference in handheld multimeters where battery voltage varies from 9 V to 6.5 V during discharge. IC Role / Device Role / Timing Role: Zener shunt regulator maintaining constant 14 V reference for ADC reference buffer. Use Value: 400 mW power rating sustains regulation across full battery range without thermal shutdown or drift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C15LT1G (ON Semiconductor) | 15 V nominal, SOT-23 package, 300 mW Pd, rd = 30 Ω @ 5 mA - higher test current, lower impedance but wider VZ tolerance (±5%). | Surface-mount only; unsuitable for through-hole automated insertion or high-temp industrial chassis mounting. | Select when board space is constrained and SMT assembly is available; verify thermal margin at 85°C ambient. |
| 1N4742A (ON Semiconductor) | 12 V nominal, DO-41 package, 1 W Pd, rd = 9 Ω @ 21 mA - higher power, lower impedance, but noise level not specified and significantly higher than HZS-L series. | Through-hole compatible but lacks documented low-noise performance; used in general-purpose regulation, not precision analog. | Choose for cost-sensitive, non-critical 12 V regulation where noise and tight VZ tolerance are secondary. |
Compared with BZX84-C15LT1G and 1N4742A, the HZS12C3LTD-E delivers superior noise performance and tighter voltage tolerance in an industrial-qualified MHD package, making it preferred for precision analog reference applications where signal integrity outweighs raw power handling.
Availability
HZS12C3LTD-E is available at Aetrix Electronics and suitable for industrial power monitoring, audio signal conditioning, medical sensor front-ends, and test & measurement equipment requiring stable component supply with guaranteed long-term continuity.
Supply support for HZS12C3LTD-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 designed specifically for low-noise, high-stability voltage reference applications in industrial and instrumentation systems - emphasizing precision, thermal resilience, and manufacturability in automated assembly lines.
FAQ
What is the exact zener voltage range for HZS12C3LTD-E at 0.5 mA test current?
The HZS12C3LTD-E has a guaranteed zener voltage range of 13.8 V to 14.3 V when tested at IZ = 0.5 mA, per Renesas datasheet REJ03G0166-0300 Rev.3.00. This ±0.5 V window ensures predictable regulation in precision reference designs without post-manufacturing sorting.
Is HZS12C3LTD-E suitable for surface-mount assembly?
No - the HZS12C3LTD-E uses the MHD axial-leaded package (JEITA GRZZ0002ZC-A), designed for through-hole mounting and 5 mm-pitch high-speed automatic insertion. It is not a surface-mount device and requires compatible PTH footprint and wave/solder-paste reflow processes.
What is the maximum allowable reverse leakage current for HZS12C3LTD-E?
The HZS12C3LTD-E specifies a maximum reverse leakage current of 1 μA at VR = 11.5 V, measured at Ta = 25°C. This low leakage supports high-impedance reference nodes in battery-powered instrumentation and sensor interfaces where quiescent current matters.
How does the noise performance of HZS12C3LTD-E compare to standard Zener diodes?
The HZS12C3LTD-E achieves approximately 1/3 to 1/10 the noise level of the legacy HZ series Zeners, as confirmed in Renesas documentation. This low-noise characteristic stems from its silicon planar process and optimized junction design, making it suitable for audio preamps and precision ADC references where voltage noise directly impacts SNR.
What is the junction-to-ambient thermal resistance (θJA) for HZS12C3LTD-E?
Renesas does not publish a specific θJA value for HZS12C3LTD-E in the available datasheet. Thermal performance is characterized via the derating curve in Figure 3: power dissipation drops linearly from 400 mW at 25°C ambient to 0 mW at ~150°C on a standard 100 × 180 × 1.6 mm phenolic PCB - users must validate layout-specific thermal behavior experimentally.
HZS12C3LTD-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:
- -
HZS12C3LTD-E FAQ
1.How can I place an order for HZS12C3LTD-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZS12C3LTD-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 HZS12C3LTD-E reliable?
The price and inventory of HZS12C3LTD-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZS12C3LTD-E is usually 5 days.
3.What payment methods are accepted for HZS12C3LTD-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZS12C3LTD-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZS12C3LTD-E?
HZS12C3LTD-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZS12C3LTD-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 HZS12C3LTD-E?
For technical support, including HZS12C3LTD-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZS12C3LTD-E requirements.
6.How does Aetrix verify that HZS12C3LTD-E is sourced from the original manufacturer or authorized distributors?
All HZS12C3LTD-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 HZS12C3LTD-E meets industry standards.
7.What is the process for return or replacement of HZS12C3LTD-E?
All HZS12C3LTD-E units undergo pre-shipment inspection (PSI). If there is an issue with HZS12C3LTD-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 HZS12C3LTD-E part is unused and in its original packaging.
Return procedure for HZS12C3LTD-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HZS12C3LTD-E Tags
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