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Renesas HZ12C2J-E
- Part No.:
- HZ12C2J-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZ12C2J-E.pdf
- Description:
- DIODE ZENER 0.4W
- Quantity:
- Payment:
- Shipping:
Inventory:31,000
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Product details
Overview
HZ12C2J-E from Renesas is a silicon planar Zener diode optimized for low-noise voltage reference and stabilization in precision analog circuits, with a nominal zener voltage of 13.5 V to 14.0 V at 0.5 mA test current, 80 Ω dynamic resistance, 400 mW power dissipation, and DO-35 glass package. It serves as a stable shunt reference in low-drift power supplies and sensor biasing networks.
For engineers reviewing the HZ12C2J-E datasheet, HZ12C2J-E pinout, HZ12C2J-E application, or HZ12C2J-E equivalent, key selection criteria include zener voltage tolerance (±0.5 V), low noise performance (1/3–1/10 of standard HZ series), temperature coefficient behavior near 13.75 V, and DO-35 thermal derating above 50°C ambient.
Technical Context
This device operates as a DC-stabilized shunt regulator using avalanche breakdown in a planar-diffused silicon junction. Its low dynamic impedance (80 Ω max at 0.5 mA) and tight zener voltage tolerance support high-accuracy feedback paths in linear regulators and analog front-ends.
The HZ12C2J-E exhibits a positive temperature coefficient near 13.75 V (≈+0.04 %/°C per Fig.2), enabling predictable drift compensation in multi-stage references. It is rated for 175°C junction temperature and −55°C to +175°C storage, with cathode-anode polarity clearly marked by navy-blue band on orange body.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 13.5 V min to 14.0 V max at IZ = 0.5 mA - defines stable regulation range for precision biasing |
| Dynamic Resistance (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 - sets maximum continuous shunt power before thermal shutdown risk |
| Reverse Leakage (IR) | 1 μA max at VR = 10.5 V - guarantees negligible error current in high-impedance reference nodes |
| Junction Temperature (Tj) | 175°C max - enables operation in thermally constrained industrial enclosures without forced cooling |
| Package | DO-35 glass axial - provides hermetic sealing and proven reliability in legacy PCB layouts |
Pinout & Package
DO-35 glass axial package with orange body and navy-blue cathode band; total mass ≈ 0.13 g; lead spacing E = 4.2 mm; body diameter φD = 2.0 mm; length L = 26.0 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Banded End) | Cathode | Connected to regulated voltage node; must be held at higher potential than anode during conduction |
| 2 (Non-banded End) | Anode | Connected to ground or lower-potential return path; completes shunt current loop |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise Zener operation | Diode noise level ≈ 1/3–1/10 that of standard HZ series - critical for audio preamps and ADC reference buffers |
| Tight zener voltage tolerance | ±0.25 V window (13.5–14.0 V) at 0.5 mA - reduces calibration overhead in factory-trimmed instruments |
| Low leakage current | ≤1 μA at 10.5 V reverse bias - preserves accuracy in nanoamp-level sensor signal chains |
| Stable temperature coefficient | +0.04 %/°C near 13.75 V (Fig.2) - enables predictable drift modeling in wide-temperature-range designs |
Applications
| High-Precision Reference Supply | Low-Noise Sensor Biasing |
|---|---|
Use Scenario: Generating a stable 13.75 V reference for 24-bit delta-sigma ADCs in weigh-scale electronics. IC Role / Device Role / Timing Role: Shunt voltage reference providing low-drift, low-noise excitation to bridge sensors and reference input to SAR/DS converters. Use Value: 80 Ω dynamic resistance and <1 μA leakage minimize code spread and offset drift over temperature. | Use Scenario: Biasing photodiode transimpedance amplifiers in optical gas analyzers requiring sub-nA dark-current stability. IC Role / Device Role / Timing Role: Low-noise Zener source establishing fixed reverse-bias voltage across high-impedance photodetectors. Use Value: Noise reduction to 1/10 of standard HZ series directly improves signal-to-noise ratio in picoamp-level photocurrent measurement. |
| Industrial Linear Regulator Feedback | Calibration-Grade Instrumentation |
Use Scenario: Setting output voltage of discrete NPN pass-transistor regulators in programmable DC power supplies. IC Role / Device Role / Timing Role: Precision shunt element in feedback divider network controlling base drive of series pass transistor. Use Value: 400 mW rating supports >20 mA reference current without thermal runaway; DO-35 allows through-hole mounting in high-reliability assemblies. | Use Scenario: On-board voltage standard in handheld multimeters and portable calibrators needing traceable 13.75 V reference. IC Role / Device Role / Timing Role: Primary voltage reference in self-calibrating analog subsystems where long-term drift must remain <10 ppm/°C. Use Value: Predictable +0.04 %/°C tempco enables software compensation algorithms with <0.01% full-scale error over −20°C to +70°C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX85C13 (Nexperia) | Zener voltage 13 V ±5%, rd = 25 Ω typical but 300 Ω max, Pd = 1.3 W, DO-41 package | Higher power handling but looser voltage tolerance and no documented low-noise optimization | Select when higher power margin is needed and noise floor is secondary to cost |
| 1N4742A (ON Semiconductor) | Zener voltage 12 V ±5%, rd = 9 Ω typical, Pd = 1.0 W, DO-41 package | Lower nominal voltage, tighter rd, but no low-noise specification or HZ-L series noise reduction claim | Select for general-purpose 12 V regulation where ultra-low noise is not required |
Compared with BZX85C13 and 1N4742A, the HZ12C2J-E delivers verified low-noise performance and tighter voltage control at 13.75 V, making it uniquely suitable for metrology-grade references where noise and drift dominate error budgets - despite its lower power rating and DO-35 footprint.
Availability
HZ12C2J-E is available at Aetrix Electronics and suitable for high-precision reference supplies, low-noise sensor biasing, and industrial linear regulator feedback requiring stable component supply with full traceability and long-lifecycle support.
Supply support for HZ12C2J-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 Technology Corp. is a Japanese semiconductor manufacturer specializing in microcontrollers, analog mixed-signal ICs, and power management solutions for industrial, automotive, and infrastructure markets.
The HZ-L Series was designed specifically for low-noise, high-stability voltage reference applications in test equipment, precision instrumentation, and analog signal conditioning - distinguishing it from general-purpose Zener families by verified noise reduction and tighter parametric control.
FAQ
What is the exact zener voltage range specified for HZ12C2J-E?
The HZ12C2J-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 reflects tight process control for precision reference use, and the value is confirmed in Table on Page 3 of REJ03G0182-0300 Rev.3.00.
Does HZ12C2J-E have a documented low-noise characteristic compared to standard Zeners?
Yes - the HZ-L Series datasheet explicitly states that HZ12C2J-E achieves approximately 1/3 to 1/10 the noise level of the legacy HZ series. This low-noise performance is a defining feature of the HZ-L family and is validated in the "Features" section on Page 1 of REJ03G0182-0300 Rev.3.00.
What is the maximum power dissipation and thermal derating behavior of HZ12C2J-E?
HZ12C2J-E has a maximum power dissipation of 400 mW at Ta = 25°C. Derating begins linearly above 50°C ambient, reaching zero dissipation at 175°C - consistent with the absolute maximum junction temperature rating. Full derating curve is shown in Fig.3 on Page 4 of REJ03G0182-0300 Rev.3.00.
Is HZ12C2J-E supplied in tape-and-reel or bulk packaging?
HZ12C2J-E is supplied in bulk packaging per the ordering information on Page 1 of REJ03G0182-0300 Rev.3.00, with no mention of tape-and-reel option in the official Renesas documentation. The DO-35 axial form factor and GRZZ0002ZB-A package code indicate standard loose components for through-hole assembly.
What is the cathode identification method for HZ12C2J-E?
The cathode of HZ12C2J-E is identified by a navy-blue band located at one end of the orange-colored DO-35 glass body - matching the pin arrangement diagram on Page 1 of REJ03G0182-0300 Rev.3.00. Pin 1 (cathode) is always the banded end.
HZ12C2J-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:
- -
HZ12C2J-E FAQ
1.How can I place an order for HZ12C2J-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZ12C2J-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 HZ12C2J-E reliable?
The price and inventory of HZ12C2J-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZ12C2J-E is usually 5 days.
3.What payment methods are accepted for HZ12C2J-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZ12C2J-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZ12C2J-E?
HZ12C2J-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZ12C2J-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 HZ12C2J-E?
For technical support, including HZ12C2J-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZ12C2J-E requirements.
6.How does Aetrix verify that HZ12C2J-E is sourced from the original manufacturer or authorized distributors?
All HZ12C2J-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 HZ12C2J-E meets industry standards.
7.What is the process for return or replacement of HZ12C2J-E?
All HZ12C2J-E units undergo pre-shipment inspection (PSI). If there is an issue with HZ12C2J-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 HZ12C2J-E part is unused and in its original packaging.
Return procedure for HZ12C2J-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HZ12C2J-E Tags
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