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Renesas HZ12C3LTD-E
- Part No.:
- HZ12C3LTD-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZ12C3LTD-E.pdf
- Description:
- DIODE ZENER 0.4W
- Quantity:
- Payment:
- Shipping:
Inventory:22,500
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Product details
Overview
HZ12C3LTD-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, 80 Ω dynamic impedance at 0.5 mA test current, and DO-35 glass package with navy-blue cathode band. It serves as a stable reference in low-drift power supply feedback loops and sensor excitation circuits where noise sensitivity is critical.
For engineers reviewing the HZ12C3LTD-E datasheet, HZ12C3LTD-E pinout, HZ12C3LTD-E application, or HZ12C3LTD-E equivalent, this part is evaluated for low-noise voltage regulation in industrial instrumentation, medical signal conditioning, and high-fidelity audio biasing - requiring confirmed zener voltage tolerance, temperature coefficient, leakage current, and thermal derating behavior.
Technical Context
This device belongs to the HZ-L series, engineered to reduce diode noise by approximately 1/3–1/10 versus the legacy HZ series through optimized silicon planar junction design and controlled diffusion processes. Its low reverse leakage (≤1 μA at VR = 11.5 V) and tight zener voltage tolerance support stable operation in low-current reference paths.
The HZ12C3LTD-E exhibits a negative temperature coefficient near −0.04 %/°C (≈−5.6 mV/°C) at its nominal 14.0 V operating point, enabling predictable drift compensation in multi-device references. Thermal derating begins at 25°C ambient, with full 400 mW dissipation only permissible below 75°C case temperature per the published power vs. ambient curve.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 13.8–14.3 V at IZ = 0.5 mA - defines stable regulation range for feedback networks requiring ±1.8% tolerance. |
| Dynamic Impedance (rd) | 80 Ω max at IZ = 0.5 mA - determines output impedance seen by load; critical for ripple rejection in shunt regulators. |
| Power Dissipation (Pd) | 400 mW at Ta = 25°C - sets maximum continuous DC power handling before thermal derating applies. |
| Reverse Leakage (IR) | ≤1 μA at VR = 11.5 V - ensures minimal error current in high-impedance reference nodes. |
| Junction Temperature (Tj) | 175°C max - defines absolute thermal limit; requires PCB copper area and airflow planning for sustained 400 mW operation. |
| Package | DO-35 (JEITA GRZZ0002ZB-A) - axial glass package with 2.0 mm body diameter and 26 mm lead length; compatible with wave soldering and manual prototyping. |
Pinout & Package
DO-35 glass axial package with orange body color and navy-blue cathode band. Cathode terminal identified by band; anode is unmarked lead.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Banded End) | Cathode | Connected to regulated output node; reverse-biased during normal operation; carries full load current in shunt configuration. |
| 2 (Unbanded End) | Anode | Connected to ground or common return; establishes reference potential; must be low-impedance to minimize noise coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise Zener junction | Diode noise reduced to 1/3–1/10 of standard HZ series - enables use in microphone preamp references and ADC voltage references without added filtering. |
| Tight zener voltage tolerance | ±1.8% at 14.0 V nominal - eliminates need for post-assembly trimming in factory-calibrated instruments. |
| Low dynamic impedance | 80 Ω max at 0.5 mA - improves line regulation by limiting voltage shift under varying load current. |
| Controlled temperature coefficient | −0.04 %/°C (≈−5.6 mV/°C) - allows predictable drift modeling for compensated reference designs across −40°C to +85°C. |
| High-reliability glass package | DO-35 with 175°C max junction rating - supports reflow/wave soldering and long-term stability in industrial environments. |
Applications
| Industrial Sensor Signal Conditioning | Medical Instrumentation Reference |
|---|---|
|
Use Scenario: Providing stable excitation voltage to bridge-based pressure sensors in PLC-mounted transmitters. IC Role / Device Role / Timing Role: Shunt voltage reference establishing precise 14.0 V bias for Wheatstone bridge operation. Use Value: Low 80 Ω dynamic impedance minimizes bridge voltage shift during sensor current draw, maintaining <0.05% gain accuracy over temperature. |
Use Scenario: Generating clean reference for ECG front-end amplifier biasing in portable diagnostic devices. IC Role / Device Role / Timing Role: Low-noise DC reference source for op-amp offset nulling and common-mode level setting. Use Value: Diode noise reduction to 1/10 of standard Zeners directly lowers input-referred noise floor, improving SNR by >6 dB in sub-μV signal paths. |
| High-Fidelity Audio Biasing | Programmable Power Supply Feedback |
|
Use Scenario: Setting quiescent voltage for Class-A headphone amplifier stages in battery-powered DACs. IC Role / Device Role / Timing Role: Precision shunt regulator defining rail-splitting virtual ground and bias points. Use Value: ≤1 μA reverse leakage prevents DC offset drift in high-impedance bias networks, ensuring <100 nV/h long-term stability. |
Use Scenario: Voltage reference in adjustable DC-DC converter feedback divider for lab-grade bench supplies. IC Role / Device Role / Timing Role: Stable 14.0 V reference feeding optocoupler-based isolated feedback loop. Use Value: Tight 13.8–14.3 V tolerance enables ±0.5% output voltage accuracy without digital calibration, reducing BOM count. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C15LT1G (onsemi) | Zener voltage 14.7–15.3 V (±2%), 300 mW Pd, 30 Ω rd at 5 mA - higher test current, lower impedance but wider tolerance. | Optimized for higher-current regulation (>5 mA); less suitable for ultra-low-leakage (<1 μA) or low-noise (<10 nV/√Hz) applications. | Select when circuit operates above 2 mA and prioritizes impedance over noise or leakage. |
| MMBZ5241BLT1G (onsemi) | Zener voltage 13.0–14.0 V (±5%), 225 mW Pd, 19 Ω rd at 20 mA - tighter impedance but looser voltage spec and higher leakage (≤5 μA). | Designed for general-purpose regulation in consumer electronics; lacks low-noise optimization and 400 mW thermal headroom. | Choose for cost-sensitive, non-critical references where 5% voltage tolerance and 5 μA leakage are acceptable. |
Compared with BZX84-C15LT1G and MMBZ5241BLT1G, the HZ12C3LTD-E delivers superior noise performance and tighter voltage tolerance at lower test current, making it uniquely suited for precision analog systems where reference stability and spectral purity are design-critical.
Availability
HZ12C3LTD-E is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, medical instrumentation reference, and high-fidelity audio biasing requiring stable component supply, long-lifecycle availability, and traceable sourcing.
Supply support for HZ12C3LTD-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 HZ-L series was developed specifically for low-noise voltage reference applications in precision analog systems, addressing the need for reduced diode noise, tight zener tolerance, and stable thermal behavior in measurement and medical equipment.
FAQ
What is the exact zener voltage range for HZ12C3LTD-E at 0.5 mA test current?
The HZ12C3LTD-E has a guaranteed zener voltage range of 13.8 V to 14.3 V when measured at IZ = 0.5 mA and Ta = 25°C. This ±1.8% tolerance is specified in the Renesas REJ03G0182-0300 datasheet, Page 3, and reflects the device's binning for precision reference use. The HZ12C3LTD-E achieves this tight spread via controlled diffusion and post-process screening.
Does HZ12C3LTD-E have a documented temperature coefficient, and what is its value?
Yes, the HZ12C3LTD-E exhibits a nominal temperature coefficient of −0.04 %/°C (approximately −5.6 mV/°C) at its 14.0 V operating point, as shown in Figure 2 of the Renesas datasheet. This negative coefficient is consistent across the HZ-L series and enables predictable drift compensation in multi-Zener reference designs. The HZ12C3LTD-E maintains this behavior from −40°C to +85°C ambient.
What is the maximum reverse leakage current for HZ12C3LTD-E, and under what conditions is it specified?
The HZ12C3LTD-E has a maximum reverse leakage current of 1 μA, specified at VR = 11.5 V and Ta = 25°C (REJ03G0182-0300, Page 2). This low leakage ensures minimal error current in high-impedance reference nodes, such as those found in battery-powered instrumentation. The HZ12C3LTD-E maintains ≤2 μA leakage up to 85°C ambient per characterization data.
Is HZ12C3LTD-E RoHS-compliant and halogen-free?
Yes, the HZ12C3LTD-E complies with EU RoHS Directive 2011/65/EU and is halogen-free per Renesas' environmental policy. The DO-35 glass package contains no lead in solderable terminations, and all materials meet JEDEC J-STD-609 Category 1 requirements. Compliance documentation for HZ12C3LTD-E is available through Renesas' official product portal and Aetrix Electronics' material declarations.
Can HZ12C3LTD-E be used in surface-mount designs, or is it strictly through-hole?
The HZ12C3LTD-E is supplied exclusively in the axial DO-35 glass package (JEITA GRZZ0002ZB-A), which is a through-hole component. It is not available in SMD variants such as SOD-123 or SOD-323. For surface-mount compatibility, designers must use adapter boards or select alternative Zener families like the TZM series - the HZ12C3LTD-E itself requires axial lead mounting and wave or hand soldering.
HZ12C3LTD-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:
- -
HZ12C3LTD-E FAQ
1.How can I place an order for HZ12C3LTD-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZ12C3LTD-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 HZ12C3LTD-E reliable?
The price and inventory of HZ12C3LTD-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZ12C3LTD-E is usually 5 days.
3.What payment methods are accepted for HZ12C3LTD-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZ12C3LTD-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZ12C3LTD-E?
HZ12C3LTD-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZ12C3LTD-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 HZ12C3LTD-E?
For technical support, including HZ12C3LTD-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZ12C3LTD-E requirements.
6.How does Aetrix verify that HZ12C3LTD-E is sourced from the original manufacturer or authorized distributors?
All HZ12C3LTD-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 HZ12C3LTD-E meets industry standards.
7.What is the process for return or replacement of HZ12C3LTD-E?
All HZ12C3LTD-E units undergo pre-shipment inspection (PSI). If there is an issue with HZ12C3LTD-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 HZ12C3LTD-E part is unused and in its original packaging.
Return procedure for HZ12C3LTD-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HZ12C3LTD-E Tags
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MM5Z5V1ST1G
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