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Renesas HZ12C2LTD-E
- Part No.:
- HZ12C2LTD-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZ12C2LTD-E.pdf
- Description:
- DIODE ZENER 0.4W
- Quantity:
- Payment:
- Shipping:
Inventory:12,000
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Product details
Overview
HZ12C2LTD-E from Renesas Electronics is a silicon planar Zener diode optimized for low-noise voltage regulation in precision analog circuits, featuring a nominal zener voltage of 13.75 V (min 13.5 V / max 14.0 V), 400 mW power dissipation, 80 Ω dynamic impedance at 0.5 mA test current, and −55 °C to +175 °C storage temperature range. It serves as a stable reference in low-drift power supply feedback paths and sensor biasing networks.
For engineers reviewing the HZ12C2LTD-E datasheet, HZ12C2LTD-E pinout, HZ12C2LTD-E application, or HZ12C2LTD-E equivalent, key selection criteria include its low-noise performance (≈1/3–1/10 of standard HZ series), tight zener voltage tolerance, DO-35 package compatibility, and suitability for stabilized reference designs requiring thermal stability and minimal leakage.
Technical Context
This device operates as a two-terminal voltage reference using avalanche breakdown in a silicon planar junction structure. Its low noise stems from optimized doping profile and passivation, reducing flicker and shot noise components critical in audio preamps and instrumentation amplifiers.
The HZ12C2LTD-E exhibits a zener voltage temperature coefficient of approximately −0.04 %/°C (−5.5 mV/°C) near 13.75 V, enabling predictable drift compensation in temperature-sensitive references. It maintains stable regulation across 0.5–1 mA zener current with ≤1 μA reverse leakage at VR = 11 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 13.5 V min / 14.0 V max at IZ = 0.5 mA - defines precise regulation window for feedback loop setpoints |
| Dynamic Impedance (rd) | 80 Ω max at IZ = 0.5 mA - ensures minimal output voltage variation 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 max at VR = 11 V - minimizes error current in high-impedance reference nodes |
| Junction Temperature (Tj) | 175 °C maximum - enables use in automotive under-hood or industrial control environments |
| Noise Level | ≈1/3–1/10 of standard HZ series - directly reduces broadband noise in sensitive analog signal chains |
Pinout & Package
Package: DO-35 (JEITA code GRZZ0002ZB-A), glass axial leaded package with orange body and navy-blue cathode band. Dimensions: φD = 2.0 mm, L = 26.0 mm, E = 4.2 mm; mass ≈ 0.13 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | High-impedance reference node input | Connected to regulated output or op-amp inverting input; polarity must be observed to avoid forward conduction |
| 2 (Anode) | Reference ground return path | Serves as current sink terminal; requires low-impedance connection to system ground or feedback divider common |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise Zener structure | Reduces broadband voltage noise by factor of 3–10 vs. legacy HZ series, critical for audio and measurement front-ends |
| Tight zener voltage tolerance | ±0.25 V window (13.5–14.0 V) enables accurate 12 V system reference without trimming resistors |
| Low dynamic impedance | 80 Ω max ensures <1 mV output shift per 100 μA load change - improves PSRR in regulator feedback |
| High-temperature operation | Rated to 175 °C junction temperature - supports deployment in engine control units and motor drive PCBs |
| DO-35 mechanical compatibility | Standard axial footprint allows drop-in replacement in legacy designs using HZ6–HZ36 family variants |
Applications
| Industrial Sensor Signal Conditioning | Audio Equipment Power Reference |
|---|---|
Use Scenario: Precision bridge sensor excitation and ADC reference in factory automation transmitters. IC Role / Device Role / Timing Role: Zener diode provides stable 13.75 V bias voltage for Wheatstone bridge and low-noise op-amp reference. Use Value: Low 1/f noise prevents drift-induced offset errors in 24-bit sigma-delta measurements over temperature. |
Use Scenario: Dual-rail ±15 V linear power supply reference in professional microphone preamplifiers. IC Role / Device Role / Timing Role: Stabilizes negative rail regulation via TL431 feedback network; sets precise 13.75 V threshold. Use Value: 80 Ω dynamic impedance limits ripple coupling into audio signal path, preserving SNR > 110 dB. |
| Automotive Engine Control Unit (ECU) | Medical Diagnostic Instrumentation |
Use Scenario: Reference voltage source for knock sensor signal conditioning in gasoline direct injection ECUs. IC Role / Device Role / Timing Role: Supplies regulated bias to piezoelectric sensor amplifier stage operating under wide ambient temperature swings. Use Value: −0.04 %/°C tempco ensures <±15 mV drift across −40 °C to +125 °C ambient, meeting ASIL-B functional safety margin. |
Use Scenario: Stable voltage reference for photodiode transimpedance amplifier in portable blood oximeters. IC Role / Device Role / Timing Role: Sets gain-defining reference point for analog front-end; operates in low-power standby mode. Use Value: 1 μA max reverse leakage avoids loading high-impedance photodiode node, preserving sub-picoamp resolution. |
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 12 V (±5%), 500 mW rating, 30 Ω rd, SOD-123 package | Lower voltage, surface-mount only - requires PCB redesign; better dynamic impedance but higher noise | Select when board space is constrained and 12 V reference suffices; verify noise floor impact on signal chain |
| Vishay BZX84-C13 | Zener voltage 13 V (±5%), 300 mW rating, 25 Ω rd, SOT-23 package | Lower power rating and different tempco (−0.05 %/°C); not qualified for >125 °C operation | Acceptable for commercial-grade portable devices where 13 V tolerance and lower thermal margin are acceptable |
Compared with MMBZ5242B and BZX84-C13, the HZ12C2LTD-E delivers superior low-noise performance and extended high-temperature capability in through-hole DO-35 format, making it preferred for mission-critical analog references where thermal stability and noise floor dominate selection.
Availability
HZ12C2LTD-E is available at Aetrix Electronics and suitable for industrial sensor interfaces, automotive ECU subsystems, and medical diagnostic equipment requiring stable component supply with traceable sourcing and long-term lifecycle support.
Supply support for HZ12C2LTD-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 connectivity solutions for automotive, industrial, and IoT applications.
The HZ-L Series was designed specifically for low-noise, high-stability voltage reference applications in precision analog systems where conventional Zener diodes introduce unacceptable signal degradation.
FAQ
What is the exact zener voltage range specified for HZ12C2LTD-E?
The HZ12C2LTD-E has a guaranteed zener voltage range of 13.5 V minimum to 14.0 V maximum when tested at IZ = 0.5 mA and Ta = 25 °C. This 0.5 V window ensures consistent regulation accuracy across production lots without external trimming, supporting reliable feedback loop design in stabilized power supplies.
Does HZ12C2LTD-E meet RoHS compliance requirements?
Yes, the HZ12C2LTD-E complies with the EU RoHS Directive and contains no restricted substances above allowable thresholds. Renesas Electronics confirms environmental compliance for this device, and full material declarations are available upon request through official sales channels for HZ12C2LTD-E.
Can HZ12C2LTD-E replace older HZ12C2L parts without circuit modification?
Yes, HZ12C2LTD-E is a direct form-fit-function replacement for HZ12C2L, sharing identical DO-35 package dimensions, pinout, electrical specifications, and thermal ratings. The "TD-E" suffix denotes updated traceability and packaging per Renesas' post-merger documentation standards, with no electrical or mechanical changes affecting HZ12C2LTD-E integration.
What is the maximum reverse leakage current for HZ12C2LTD-E at 11 V?
The maximum reverse leakage current for HZ12C2LTD-E is 1 μA when measured at VR = 11 V and Ta = 25 °C. This low leakage preserves accuracy in high-impedance reference divider networks and minimizes error contributions in precision analog front-ends using HZ12C2LTD-E.
Is HZ12C2LTD-E rated for automotive under-hood applications?
While HZ12C2LTD-E is not AEC-Q200 qualified, its 175 °C maximum junction temperature and −55 °C to +175 °C storage range enable use in non-safety-critical automotive under-hood locations-such as engine bay sensor interfaces-provided system-level thermal analysis confirms actual Tj remains within spec during HZ12C2LTD-E operation.
HZ12C2LTD-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:
- -
HZ12C2LTD-E FAQ
1.How can I place an order for HZ12C2LTD-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZ12C2LTD-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 HZ12C2LTD-E reliable?
The price and inventory of HZ12C2LTD-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZ12C2LTD-E is usually 5 days.
3.What payment methods are accepted for HZ12C2LTD-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZ12C2LTD-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZ12C2LTD-E?
HZ12C2LTD-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZ12C2LTD-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 HZ12C2LTD-E?
For technical support, including HZ12C2LTD-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZ12C2LTD-E requirements.
6.How does Aetrix verify that HZ12C2LTD-E is sourced from the original manufacturer or authorized distributors?
All HZ12C2LTD-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 HZ12C2LTD-E meets industry standards.
7.What is the process for return or replacement of HZ12C2LTD-E?
All HZ12C2LTD-E units undergo pre-shipment inspection (PSI). If there is an issue with HZ12C2LTD-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 HZ12C2LTD-E part is unused and in its original packaging.
Return procedure for HZ12C2LTD-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HZ12C2LTD-E Tags
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BZT52C5V6T-7
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BZX84C3V3LT1G
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MMSZ4682T1G
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BZT52C15S-7-F
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MM5Z5V1ST1G
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