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Renesas HZ12C1LTD-E
- Part No.:
- HZ12C1LTD-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZ12C1LTD-E.pdf
- Description:
- DIODE ZENER 0.4W
- Quantity:
- Payment:
- Shipping:
Inventory:17,500
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Product details
Overview
HZ12C1LTD-E from Renesas Electronics is a silicon planar Zener diode optimized for low-noise voltage reference and precision stabilization in analog signal chains and power regulation circuits. It delivers a nominal zener voltage of 13.2–13.7 V at 0.5 mA test current, with dynamic resistance of 80 Ω, maximum power dissipation of 400 mW, and junction temperature rating up to 175°C. It is used in high-stability bandgap reference buffers and low-drift sensor excitation supplies.
For engineers reviewing the HZ12C1LTD-E datasheet, HZ12C1LTD-E pinout, HZ12C1LTD-E application, or HZ12C1LTD-E equivalent, key selection criteria include its low-noise performance (≈1/3–1/10 of standard HZ series), tight zener voltage tolerance, low leakage, and DO-35 package compatibility with through-hole PCB layouts requiring thermal reliability and long-term voltage stability.
Technical Context
This device operates as a two-terminal, DC-biased voltage reference using avalanche breakdown in a planar-diffused silicon junction. Its zener voltage exhibits a positive temperature coefficient near +0.06 %/°C (≈8.0 mV/°C) at 13.5 V, enabling predictable drift compensation in multi-device reference networks.
Designed for operation at IZ = 0.5–1 mA, it maintains low dynamic impedance (80 Ω max) and reverse leakage <1 μA at VR = 11 V, supporting stable biasing in op-amp feedback loops and low-current reference shunts without significant self-heating-induced drift.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 13.2–13.7 V at IZ = 0.5 mA - defines precise clamping/reference level for analog circuitry |
| Dynamic Resistance (rd) | 80 Ω max at IZ = 0.5 mA - ensures minimal output impedance variation under load transients |
| Power Dissipation (Pd) | 400 mW max at Ta = 25°C - supports continuous operation in compact through-hole designs with adequate board copper |
| Junction Temperature (Tj) | −55 to +175°C - enables use in industrial environments with wide ambient swings |
| Reverse Leakage (IR) | ≤1 μA at VR = 11 V - minimizes error current in high-impedance reference nodes |
| Temperature Coefficient (γZ) | +0.06 %/°C (≈8.0 mV/°C) - allows predictable thermal drift modeling in compensated references |
Pinout & Package
Package: DO-35 glass axial lead package (JEITA code GRZZ0002ZB-A), 2.0 mm diameter × 26 mm length, orange body with navy-blue cathode band. Compatible with standard through-hole wave-solder and hand-solder processes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Zener breakdown terminal | Connected to higher-potential node; reverse-biased operation requires cathode at ≥VZ above anode |
| 2 (Anode) | Reference ground terminal | Typically tied to system ground or low-impedance return path; establishes reference potential for VZ measurement |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise Zener operation | Diode noise ≈1/3–1/10 that of legacy HZ series - critical for audio preamps and precision ADC references |
| Stable low-impedance reference | rd ≤80 Ω at 0.5 mA - reduces sensitivity to supply ripple and load variations in shunt regulator topologies |
| Wide zener voltage range support | Part of HZ-L family spanning 5.2–38 V - enables standardized BOM across multiple reference voltage tiers |
| High thermal robustness | Tj = 175°C - sustains operation in enclosed enclosures or near heat-generating components without derating |
Applications
| Industrial Sensor Signal Conditioning | Low-Drift Analog Front-End Reference |
|---|---|
Use Scenario: Precision bridge sensor excitation in strain-gauge or RTD measurement systems operating over −40°C to +85°C. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable 13.5 V excitation source for ratiometric conversion. Use Value: Low dynamic resistance (80 Ω) and low temperature coefficient minimize gain drift; low noise prevents corruption of microvolt-level sensor outputs. |
Use Scenario: Biasing high-resolution SAR ADCs and instrumentation amplifiers in data acquisition modules. IC Role / Device Role / Timing Role: Low-noise, low-drift reference node for internal DACs and comparator thresholds. Use Value: Diode noise reduction vs. standard HZ series directly improves effective number of bits (ENOB) in 16+ bit converters. |
| Stabilized Power Supply Feedback | Calibration Voltage Standard |
Use Scenario: Secondary-side voltage sensing in isolated flyback or forward converters requiring ±1% output regulation. IC Role / Device Role / Timing Role: Zener clamp in optocoupler feedback loop to regulate TL431-like control ICs. Use Value: Tight VZ tolerance (±0.25 V) and low rd ensure fast transient response and minimal load-dependent output deviation. |
Use Scenario: Field-deployable calibration equipment requiring traceable, stable reference voltages between service intervals. IC Role / Device Role / Timing Role: Primary voltage standard in portable multimeter reference subsystems. Use Value: Long-term stability supported by low leakage (<1 μA) and high Tj margin reduces recalibration frequency in maintenance-limited environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4742A (ON Semiconductor) | VZ = 12 V ±5%, rd = 9 Ω, Pd = 1 W, DO-41 package | Higher power, lower impedance, but higher noise and looser VZ tolerance | Select when higher current capability (>10 mA) and lower rd outweigh noise and stability requirements |
| BZX85C13 (Nexperia) | VZ = 13 V ±5%, rd = 25 Ω, Pd = 1.3 W, DO-41 package | Lower rd, higher Pd, but no documented low-noise optimization or HZ-L series noise reduction | Select when cost-sensitive designs require general-purpose 13 V reference with higher power headroom |
Compared with 1N4742A and BZX85C13, HZ12C1LTD-E trades higher power rating and ultra-low rd for significantly reduced broadband noise and tighter VZ distribution-making it preferred for metrology-grade analog references where spectral purity and long-term drift dominate over raw power handling.
Availability
HZ12C1LTD-E is available at Aetrix Electronics and suitable for industrial sensor conditioning, precision analog front-ends, and stabilized power supply feedback requiring stable component supply, long-lifecycle continuity, and RoHS-compliant through-hole packaging.
Supply support for HZ12C1LTD-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 Japanese semiconductor manufacturer specializing in microcontrollers, analog and power devices, and system-on-chip solutions for industrial, automotive, and infrastructure markets.
HZ12C1LTD-E belongs to the HZ-L Series of low-noise silicon planar Zener diodes, designed specifically for high-stability voltage reference applications where spectral noise, thermal drift, and long-term parameter consistency are critical.
FAQ
What is the exact zener voltage range specified for HZ12C1LTD-E?
The HZ12C1LTD-E has a guaranteed zener voltage range of 13.2 V to 13.7 V when tested at IZ = 0.5 mA and Ta = 25°C. This 0.5 V span reflects tight process control for precision reference use, and the value is confirmed in Renesas' REJ03G0182-0300 Rev.3.00 datasheet on page 3.
Is HZ12C1LTD-E compatible with standard DO-35 footprint layouts?
Yes, HZ12C1LTD-E uses the DO-35 package (RENESAS code GRZZ0002ZB-A, JEITA code SC-40), with 2.0 mm body diameter and 26 mm lead-to-lead length. Its cathode band is navy blue and body color is orange, matching standard DO-35 mechanical dimensions and soldering profiles used in legacy and new industrial PCB designs.
How does the noise performance of HZ12C1LTD-E compare to standard Zener diodes?
HZ12C1LTD-E achieves approximately 1/3 to 1/10 the broadband noise level of conventional HZ-series Zeners due to optimized planar junction processing. This is explicitly stated in the "Features" section of the Renesas datasheet and validated in low-noise analog applications such as sensor excitation and high-resolution ADC references.
What is the maximum allowable reverse current before degradation in HZ12C1LTD-E?
HZ12C1LTD-E is rated for continuous operation up to its absolute maximum power dissipation of 400 mW. At VZ ≈13.5 V, this corresponds to a maximum average reverse current of ~29.6 mA. However, the recommended test current is 0.5 mA, and operation above 1 mA should account for thermal derating per Figure 3 in the datasheet.
Does HZ12C1LTD-E meet RoHS compliance requirements?
Yes, HZ12C1LTD-E complies with the EU RoHS Directive as confirmed by Renesas Electronics' environmental compliance documentation. The device contains no lead, mercury, cadmium, hexavalent chromium, PBB, or PBDE above threshold limits, and is suitable for environmentally regulated industrial and commercial end equipment.
HZ12C1LTD-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:
- -
HZ12C1LTD-E FAQ
1.How can I place an order for HZ12C1LTD-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZ12C1LTD-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 HZ12C1LTD-E reliable?
The price and inventory of HZ12C1LTD-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZ12C1LTD-E is usually 5 days.
3.What payment methods are accepted for HZ12C1LTD-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZ12C1LTD-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZ12C1LTD-E?
HZ12C1LTD-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZ12C1LTD-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 HZ12C1LTD-E?
For technical support, including HZ12C1LTD-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZ12C1LTD-E requirements.
6.How does Aetrix verify that HZ12C1LTD-E is sourced from the original manufacturer or authorized distributors?
All HZ12C1LTD-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 HZ12C1LTD-E meets industry standards.
7.What is the process for return or replacement of HZ12C1LTD-E?
All HZ12C1LTD-E units undergo pre-shipment inspection (PSI). If there is an issue with HZ12C1LTD-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 HZ12C1LTD-E part is unused and in its original packaging.
Return procedure for HZ12C1LTD-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HZ12C1LTD-E Tags
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MM5Z5V1ST1G
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