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Renesas HZ12C1L-E
- Part No.:
- HZ12C1L-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
HZ12C1L-E.pdf
- Description:
- DIODE ZENER 12V 400MW DO35
- Quantity:
- Payment:
- Shipping:
Inventory:14,799
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Product details
Overview
HZ12C1L-E from Renesas is a silicon planar Zener diode optimized for low-noise voltage reference and stabilization in precision analog circuits, featuring a nominal zener voltage of 13.2–13.7 V at 0.5 mA, dynamic resistance of 80 Ω, maximum power dissipation of 400 mW, and junction temperature rating up to 175°C - deployed in high-stability power supplies and sensor biasing networks.
For engineers reviewing the HZ12C1L-E datasheet, HZ12C1L-E pinout, HZ12C1L-E application, or HZ12C1L-E equivalent, key selection criteria include verified low-noise performance (1/3–1/10 lower than standard HZ series), tight zener voltage tolerance, DO-35 package compatibility, and thermal stability across −55°C to +175°C storage range.
Technical Context
The HZ12C1L-E operates as a two-terminal voltage reference device with DC-tested zener breakdown characteristics, designed for stable regulation under low-current bias (IZ = 0.5 mA). Its low dynamic impedance (80 Ω) and low leakage current support minimal output variation in feedback loops and reference nodes.
It belongs to the HZ-L Series, distinguished by reduced diode noise versus legacy HZ parts, achieved through refined silicon planar processing and optimized junction geometry - enabling use in audio preamps, instrumentation amplifiers, and ADC reference buffers where noise floor integrity is critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 13.2–13.7 V at IZ = 0.5 mA - defines precise DC reference level for analog circuitry |
| 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 continuous operation in compact PCB layouts without forced cooling |
| Junction Temperature (Tj) | 175°C max - enables reliable function in high-ambient industrial environments |
| Storage Temperature | −55°C to +175°C - compatible with automotive and aerospace assembly/reflow processes |
| Reverse Leakage (IR) | 1 μA max at VR = 2.0 V - minimizes error current in high-impedance reference paths |
Pinout & Package
Package: DO-35 (JEITA code GRZZ0002ZB-A), glass axial leaded package with orange body and navy-blue cathode band; total mass ≈ 0.13 g; dimensions per SC-40 standard (φD = 2.0 mm, E = 4.2 mm, L = 26.0 mm).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Negative terminal of zener junction | Connected to regulated output node; polarity must be observed to maintain reverse-bias operation |
| 2 (Anode) | Positive terminal of zener junction | Typically tied to ground or lower-potential rail; completes bias path for stable breakdown conduction |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise Zener operation | Noise level ~1/3–1/10 that of standard HZ-series diodes - directly improves SNR in precision analog front-ends |
| Tight zener voltage tolerance | ±0.25 V window (13.2–13.7 V) at 0.5 mA - reduces calibration burden in voltage-reference designs |
| Low dynamic impedance | 80 Ω max - maintains regulation accuracy under varying load currents in feedback networks |
| High thermal robustness | 175°C max junction temperature - supports deployment in enclosed, thermally constrained enclosures |
Applications
| Audio Signal Conditioning | Precision Sensor Biasing |
|---|---|
Use Scenario: Low-noise preamplifier stage in studio-grade microphone interfaces requiring ultra-clean DC bias. IC Role / Device Role / Timing Role: Zener voltage reference providing stable 13.5 V supply to op-amp rails and FET source followers. Use Value: 80 Ω dynamic resistance and sub-μA leakage minimize hum injection and offset drift over temperature. | Use Scenario: Bridge excitation and signal conditioning for strain-gauge-based load cells in industrial weighing systems. IC Role / Device Role / Timing Role: Precision voltage reference for Wheatstone bridge bias and ADC reference input. Use Value: Tight 13.2–13.7 V tolerance and low temperature coefficient ensure <±0.05% full-scale error over −40°C to +85°C. |
| Industrial Power Monitoring | Medical Instrumentation Reference |
Use Scenario: Isolated auxiliary supply monitoring in programmable logic controller (PLC) backplanes with 24 VDC inputs. IC Role / Device Role / Timing Role: Zener clamp and reference in overvoltage detection circuit feeding comparator input. Use Value: 400 mW power rating and 175°C junction rating allow direct integration into high-density power management modules. | Use Scenario: Reference voltage source for 24-bit delta-sigma ADCs in portable ECG analyzers. IC Role / Device Role / Timing Role: Low-noise, stable DC reference replacing higher-cost IC references in battery-powered devices. Use Value: Diode noise reduction enables >100 dB SNR in analog front-end without additional filtering or shielding. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4742A | Zener voltage 12 V ±5%, rd = 9 Ω, Pd = 1 W, DO-41 package | Higher power, wider VZ tolerance, higher noise than HZ12C1L-E | Select when higher power margin is required and noise sensitivity is secondary |
| BZX84-C13 | Zener voltage 13 V ±5%, rd = 30 Ω, Pd = 300 mW, SOT-23 package | Surface-mount, lower power, tighter rd but unverified low-noise spec | Select for space-constrained PCBs where DO-35 axial leads are impractical |
Compared with 1N4742A and BZX84-C13, the HZ12C1L-E delivers uniquely low noise and tighter voltage control in a rugged DO-35 package - making it preferred for analog signal chains where spectral purity and long-term drift matter more than raw power handling or footprint size.
Availability
HZ12C1L-E is available at Aetrix Electronics and suitable for precision voltage reference, low-noise analog biasing, and industrial power monitoring applications requiring stable component supply, consistent parametric performance, and long-lifecycle availability.
Supply support for HZ12C1L-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 is a global semiconductor leader delivering microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.
The HZ-L Series was developed specifically for low-noise, high-stability Zener reference applications - targeting instrumentation, audio, and precision sensing where conventional Zeners introduce unacceptable noise or drift.
FAQ
What is the exact zener voltage range for HZ12C1L-E?
The HZ12C1L-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 specification is confirmed in the Renesas datasheet REJ03G0182-0300 Rev.3.00 and reflects the device's tight tolerance for precision reference use. The HZ12C1L-E achieves this via controlled planar junction processing, not post-trim calibration.
Is HZ12C1L-E suitable for surface-mount assembly?
No - the HZ12C1L-E uses a DO-35 axial-leaded glass package (JEITA code GRZZ0002ZB-A), designed for through-hole mounting only. It is not compatible with reflow soldering or pick-and-place automation. For SMT alternatives, consider BZX84-C13 or MMBZ5242B, though neither matches the HZ12C1L-E's low-noise performance or voltage precision.
What is the maximum reverse leakage current for HZ12C1L-E?
The HZ12C1L-E specifies a maximum reverse leakage current (IR) of 1 μA at VR = 2.0 V and Ta = 25°C. This low leakage supports high-impedance reference nodes and minimizes error in precision divider networks. The value is measured per DC test conditions defined in the official Renesas datasheet for the HZ-L Series.
Does HZ12C1L-E have a specified temperature coefficient?
Yes - while the datasheet does not list a single γZ value for HZ12C1L-E, Figure 2 (Temperature Coefficient vs. Zener Voltage) shows that devices in the 13–14 V range exhibit a typical temperature coefficient of approximately +0.04 %/°C (or +5.4 mV/°C). This positive coefficient is inherent to the silicon planar structure and must be accounted for in wide-temperature-range designs using the HZ12C1L-E.
Can HZ12C1L-E replace standard HZ-series Zeners directly?
Yes - the HZ12C1L-E is a drop-in replacement for HZ12C variants in the same DO-35 package, offering identical pinout, mechanical dimensions, and bias requirements. Its primary advantage is significantly lower noise (1/3–1/10 of standard HZ), with no trade-off in voltage accuracy or power rating - making the HZ12C1L-E a direct upgrade path for existing HZ-based designs needing improved signal integrity.
HZ12C1L-E Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- HZ-L
- Package/Case:
- DO-204AH, DO-35, Axial
- Packaging:
- Bulk
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 12 V
- Tolerance:
- ±2.08%
- Power - Max:
- 400 mW
- Impedance (Max) (Zzt):
- 80 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 10.5 V
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-35
HZ12C1L-E FAQ
1.How can I place an order for HZ12C1L-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZ12C1L-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 HZ12C1L-E reliable?
The price and inventory of HZ12C1L-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZ12C1L-E is usually 5 days.
3.What payment methods are accepted for HZ12C1L-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZ12C1L-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZ12C1L-E?
HZ12C1L-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZ12C1L-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 HZ12C1L-E?
For technical support, including HZ12C1L-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZ12C1L-E requirements.
6.How does Aetrix verify that HZ12C1L-E is sourced from the original manufacturer or authorized distributors?
All HZ12C1L-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 HZ12C1L-E meets industry standards.
7.What is the process for return or replacement of HZ12C1L-E?
All HZ12C1L-E units undergo pre-shipment inspection (PSI). If there is an issue with HZ12C1L-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 HZ12C1L-E part is unused and in its original packaging.
Return procedure for HZ12C1L-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HZ12C1L-E Tags
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MM5Z5V1ST1G
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