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Renesas HZ18-1TD-P-E
- Part No.:
- HZ18-1TD-P-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZ18-1TD-P-E.pdf
- Description:
- DIODE ZENER 0.5W
- Quantity:
- Payment:
- Shipping:
Inventory:23,000
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Product details
Overview
HZ18-1TD-P-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 17.3 V (min 16.9 V, max 17.7 V), 400 mW power dissipation, 15 Ω dynamic resistance at 0.5 mA test current, DO-35 glass package, and cathode band marking. It serves in low-drift power supply feedback paths and sensor biasing where noise reduction is critical.
For engineers reviewing the HZ18-1TD-P-E datasheet, HZ18-1TD-P-E pinout, HZ18-1TD-P-E application, or HZ18-1TD-P-E equivalent, key selection criteria include verified zener voltage tolerance (±0.4 V), low noise performance relative to legacy HZ series, thermal coefficient behavior below 0.02 %/°C above 15 V, and DO-35 mechanical compatibility with through-hole PCB layouts.
Technical Context
This device operates as a two-terminal voltage reference using controlled avalanche breakdown in a silicon planar junction. Its low dynamic impedance (15 Ω) and tight VZ tolerance support stable regulation under varying load currents up to 20 mA.
The HZ18-1TD-P-E exhibits a zener voltage temperature coefficient near zero (≈0.01 %/°C) in the 16–18 V range, confirmed by Figure 2 of REJ03G0182-0300, and maintains ≤1 μA reverse leakage at VR = 13.5 V per absolute maximum ratings.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 16.9 V min / 17.7 V max at IZ = 0.5 mA - defines stable reference window for feedback loop design |
| Dynamic Resistance (rd) | 15 Ω max at IZ = 0.5 mA - ensures minimal output voltage shift under load transients |
| Power Dissipation (Pd) | 400 mW at Ta = 25°C - supports continuous operation in compact PCB footprints without forced cooling |
| Reverse Leakage (IR) | 1 μA max at VR = 13.5 V - preserves accuracy in high-impedance bias networks |
| Junction Temperature (Tj) | 175°C max - enables reliable operation in industrial ambient environments up to 125°C with derating |
| Noise Level | ≈1/3–1/10 of standard HZ series - directly reduces RMS noise in reference-sensitive op-amp and ADC circuits |
Pinout & Package
Package: DO-35 glass axial lead package (JEITA code GRZZ0002ZB-A), orange body color, navy blue cathode band, 2.0 mm diameter × 26.0 mm length, 0.13 g mass.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | High-impedance reference node | Connected to regulated output or op-amp inverting input; polarity must be observed to avoid forward conduction |
| 2 (Anode) | Reference ground return | Biased to circuit common; establishes reference potential for feedback divider or sensor excitation |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise Zener structure | Reduces broadband voltage noise by factor of 3–10 vs. HZ-series diodes, critical for 16-bit+ data acquisition systems |
| Tight VZ tolerance | ±0.4 V over 16.9–17.7 V range enables single-part qualification without binning in production calibration |
| Stable temperature coefficient | ≈0.01 %/°C near 17.3 V minimizes drift-induced error in temperature-varying environments |
| Low dynamic impedance | 15 Ω at 0.5 mA ensures <1 mV output shift per 15 μA load change-ideal for high-gain error amplifiers |
| DO-35 mechanical standardization | Compatible with legacy wave-solder and hand-solder tooling; 2.0 mm Ø fits standard 0.035"–0.045" drill holes |
Applications
| Industrial Power Supply Reference | High-Resolution ADC Biasing |
|---|---|
|
Use Scenario: Precision ±15 V dual-rail linear power supply for instrumentation amplifiers and DACs. IC Role / Device Role / Timing Role: Zener voltage reference in TL431-based shunt regulator feedback network. Use Value: 15 Ω rd and 17.3 V nominal VZ enable <±0.5 mV output variation across 1–10 mA load steps. |
Use Scenario: Stable 17.3 V bias for photodiode transimpedance amplifier in optical sensor front-end. IC Role / Device Role / Timing Role: Low-noise voltage reference for op-amp offset nulling and gain-setting resistors. Use Value: 1/10 noise level vs. HZ-series reduces integrated RMS noise floor by 12 dB in 10 Hz–100 kHz band. |
| Automotive Sensor Signal Conditioning | Medical Instrument Calibration Reference |
|
Use Scenario: Engine control unit (ECU) oxygen sensor heater driver with closed-loop voltage regulation. IC Role / Device Role / Timing Role: Zener clamp in discrete MOSFET gate drive feedback path. Use Value: 175°C Tj rating and −55°C to +175°C storage range support AEC-Q200-relevant thermal cycling. |
Use Scenario: Portable ECG amplifier requiring traceable, low-drift reference for analog front-end gain calibration. IC Role / Device Role / Timing Role: Primary voltage reference for programmable gain instrumentation amplifier (PGA) offset trim. Use Value: 0.01 %/°C tempco and <1 μA leakage maintain ±0.02% full-scale accuracy over 0–50°C operating range. |
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 |
|---|---|---|---|
| 1N4746A (ON Semiconductor) | VZ = 18 V ±5%, rd = 14 Ω, Pd = 1 W, DO-41 package - higher power but wider VZ tolerance and no low-noise specification | Acceptable for general-purpose regulation but unsuitable for sub-10 μV noise-critical signal chains | Select when board space allows larger DO-41 footprint and noise budget permits >3× higher broadband noise |
| BZX85C18 (Nexperia) | VZ = 18 V ±5%, rd = 20 Ω, Pd = 1.3 W, DO-41 - higher power, looser tolerance, uncharacterized noise performance | Used in cost-sensitive industrial supplies where ±5% VZ and 20 Ω rd meet system specs | Choose for non-precision applications where 1.3 W dissipation and DO-41 mounting simplify thermal design |
Compared with 1N4746A and BZX85C18, the HZ18-1TD-P-E delivers tighter VZ tolerance (±0.4 V vs. ±5%), lower noise (1/10 vs. unspecified), and DO-35 compatibility for space-constrained designs-making it optimal for metrology-grade references despite lower power rating.
Availability
HZ18-1TD-P-E is available at Aetrix Electronics and suitable for industrial power supply reference, high-resolution ADC biasing, automotive sensor signal conditioning requiring stable component supply and long-term obsolescence management.
Supply support for HZ18-1TD-P-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 specializing in microcontrollers, analog power devices, and timing solutions, with core expertise in automotive, industrial, and infrastructure markets.
The HZ-L Series was developed specifically for low-noise, high-stability voltage reference applications in precision analog systems-addressing demand for improved signal integrity in data converters, sensor interfaces, and regulated power supplies.
FAQ
What is the exact zener voltage range for HZ18-1TD-P-E?
The HZ18-1TD-P-E has a guaranteed zener voltage range of 16.9 V minimum to 17.7 V maximum when tested at IZ = 0.5 mA, as specified in the Electrical Characteristics table on page 3 of REJ03G0182-0300. This 0.8 V span reflects tight process control for precision reference use, and the typical value is 17.3 V.
Is HZ18-1TD-P-E compatible with standard DO-35 mounting and soldering processes?
Yes, the HZ18-1TD-P-E uses the industry-standard DO-35 glass axial package (JEITA code GRZZ0002ZB-A) with 2.0 mm diameter and 26.0 mm length. It is fully compatible with conventional wave soldering, selective soldering, and hand-soldering using standard DO-35 tooling and 0.035"–0.045" PCB drill holes.
How does the noise performance of HZ18-1TD-P-E compare to generic Zener diodes?
The HZ18-1TD-P-E achieves approximately 1/3 to 1/10 the broadband voltage noise of standard HZ-series Zeners, as stated in the Features section of REJ03G0182-0300. This is achieved via proprietary silicon planar processing and junction optimization-directly measurable as reduced RMS noise in op-amp reference inputs and ADC bias networks.
What is the maximum allowable reverse voltage before breakdown for HZ18-1TD-P-E?
The HZ18-1TD-P-E begins controlled zener breakdown at its specified VZ range (16.9–17.7 V). Per Absolute Maximum Ratings, the device must not be subjected to reverse voltages exceeding its rated VZ by more than the safe operating area defined by Pd = 400 mW - i.e., VR × IR ≤ 400 mW at all times. At VR = 13.5 V, IR ≤ 1 μA.
Does HZ18-1TD-P-E have a specified temperature coefficient, and how does it affect stability?
Yes, Figure 2 in REJ03G0182-0300 shows the HZ18-1TD-P-E exhibits a zener voltage temperature coefficient of approximately 0.01 %/°C near 17.3 V. This translates to <±1.7 mV drift over a 10°C ambient change - enabling stable reference performance in unregulated enclosures and thermally variable industrial environments.
HZ18-1TD-P-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:
- -
HZ18-1TD-P-E FAQ
1.How can I place an order for HZ18-1TD-P-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZ18-1TD-P-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 HZ18-1TD-P-E reliable?
The price and inventory of HZ18-1TD-P-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZ18-1TD-P-E is usually 5 days.
3.What payment methods are accepted for HZ18-1TD-P-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZ18-1TD-P-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZ18-1TD-P-E?
HZ18-1TD-P-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZ18-1TD-P-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 HZ18-1TD-P-E?
For technical support, including HZ18-1TD-P-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZ18-1TD-P-E requirements.
6.How does Aetrix verify that HZ18-1TD-P-E is sourced from the original manufacturer or authorized distributors?
All HZ18-1TD-P-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 HZ18-1TD-P-E meets industry standards.
7.What is the process for return or replacement of HZ18-1TD-P-E?
All HZ18-1TD-P-E units undergo pre-shipment inspection (PSI). If there is an issue with HZ18-1TD-P-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 HZ18-1TD-P-E part is unused and in its original packaging.
Return procedure for HZ18-1TD-P-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HZ18-1TD-P-E Tags
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