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Renesas HZ16H3-E
- Part No.:
- HZ16H3-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZ16H3-E.pdf
- Description:
- DIODE ZENER
- Quantity:
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- Shipping:
Inventory:10,000
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Product details
Overview
HZ16H3-E from Renesas is a silicon planar Zener diode engineered for low-noise voltage regulation in precision analog circuits, featuring a nominal zener voltage of 16.3–17.1 V, 400 mW power dissipation, 14.0 Ω dynamic impedance at 0.5 mA test current, and DO-35 glass package with orange body and navy-blue cathode band. It serves in stabilized reference supplies for instrumentation amplifiers and sensor signal conditioning.
For engineers reviewing the HZ16H3-E datasheet, HZ16H3-E pinout, HZ16H3-E application, or HZ16H3-E equivalent, key selection criteria include its low-noise performance (≈1/3–1/10 of standard HZ series), tight zener voltage tolerance, temperature coefficient behavior below ±0.08 %/°C in the 16 V range, and suitability for low-current (<1 mA) precision biasing where leakage and impedance stability are critical.
Technical Context
The HZ16H3-E operates as a two-terminal shunt regulator with DC-tested zener breakdown characteristics, optimized for low-noise operation via reduced junction noise generation compared to legacy HZ-series diodes. Its design targets stable DC reference generation rather than transient suppression or high-current clamping.
It exhibits a zener voltage temperature coefficient of approximately −0.06 %/°C (−9.6 mV/°C) near 16.5 V, confirmed by Figure 2 in REJ03G0182-0300, and maintains ≤1 μA reverse leakage at VR = 12 V per Absolute Maximum Ratings table. Junction thermal resistance is implied by DO-35 package limits and 175°C max Tj.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 16.3 V min to 17.1 V max at IZ = 0.5 mA - defines stable reference point for low-power bias networks |
| Dynamic Resistance (rd) | 14.0 Ω max at IZ = 0.5 mA - ensures minimal output voltage variation under small load current changes |
| 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 = 12 V - enables high-impedance sensing nodes without significant error current injection |
| Junction Temperature (Tj) | 175°C maximum - allows reliable operation in industrial ambient environments up to 125°C with appropriate derating |
| Noise Level | ≈1/3–1/10 of standard HZ series - directly reduces broadband voltage noise in sensitive analog front-ends |
Pinout & Package
Package: DO-35 glass axial lead package (Renesas code GRZZ0002ZB-A), orange body color, navy-blue cathode band, mass 0.13 g, JEITA code SC-40.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | High-side terminal of reverse-biased PN junction | Connected to regulated positive rail; polarity must be observed to maintain zener conduction mode |
| 2 (Anode) | Low-side terminal of reverse-biased PN junction | Typically tied to circuit ground or common reference node; completes bias path for regulation |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise zener structure | Reduces broadband voltage noise by factor of 3–10 vs. standard HZ diodes-critical for audio preamps and ADC references |
| Tight zener voltage tolerance | ±0.4 V window (16.3–17.1 V) enables accurate 16.5 V nominal reference without external trimming |
| Low dynamic impedance | 14.0 Ω max ensures <1.4 mV output shift per 0.1 mA load change-supports stable bias in op-amp feedback networks |
| Low leakage current | ≤1 μA at 12 V reverse bias prevents loading of high-Z sensor outputs or filter nodes |
| DO-35 glass package | Hermetically sealed, RoHS-compliant, and compatible with wave soldering-ensures long-term reliability in industrial assemblies |
Applications
| Instrumentation Amplifier Reference | Thermocouple Cold-Junction Compensation |
|---|---|
Use Scenario: Providing stable excitation voltage to bridge-based strain gauges in weigh-scale transducers operating over −40°C to +85°C ambient. IC Role / Device Role / Timing Role: Shunt voltage reference establishing precise 16.5 V bias for instrumentation amplifier input stage. Use Value: Low temperature coefficient (−0.06 %/°C) and low noise prevent drift-induced measurement error and 1/f noise contamination in microvolt-level signals. |
Use Scenario: Generating a fixed reference voltage for cold-junction compensation circuitry in industrial thermocouple measurement modules. IC Role / Device Role / Timing Role: Zener-regulated bias source feeding ratiometric DACs and RTD interface circuits. Use Value: 400 mW power rating and 175°C max junction temperature support uninterrupted operation in enclosed control cabinets with elevated ambient temperatures. |
| Photodiode Bias Supply | ADC Voltage Reference Stabilizer |
Use Scenario: Supplying reverse bias to high-speed InGaAs photodiodes in optical time-domain reflectometers (OTDR). IC Role / Device Role / Timing Role: Low-noise DC voltage source minimizing shot noise contribution in transimpedance amplifier input stage. Use Value: Noise reduction of 3×–10× versus standard Zeners preserves signal-to-noise ratio in sub-nanosecond pulse detection. |
Use Scenario: Stabilizing reference voltage for 16-bit SAR ADCs in portable data loggers requiring battery-powered accuracy. IC Role / Device Role / Timing Role: Precision shunt regulator maintaining VREF integrity despite varying supply rail due to battery discharge. Use Value: 14.0 Ω dynamic impedance limits reference deviation to <0.1 LSB across 100 μA load variations-meeting INL spec requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4744A | Zener voltage 14.0–16.0 V (nom. 15 V); rd = 16 Ω; noise level not specified; DO-41 package (larger footprint) | Higher power (1 W) but higher noise and looser VZ tolerance; suited for general-purpose regulation, not low-noise analog | Select only if board space allows DO-41 and noise budget permits ≥3× higher noise floor |
| BZX85C16 | Zener voltage 15.3–16.7 V (nom. 16 V); rd = 20 Ω; Pd = 1.3 W; DO-41; no low-noise characterization | Higher power handling but unverified noise performance; lacks documented low-noise optimization of HZ-L series | Acceptable for non-critical references where cost outweighs noise sensitivity; not recommended for metrology-grade designs |
Compared with 1N4744A and BZX85C16, the HZ16H3-E delivers verified low-noise operation, tighter VZ tolerance, and lower dynamic impedance in a smaller DO-35 package-making it the preferred choice for precision analog systems where reference stability and spectral purity are design-critical.
Availability
HZ16H3-E is available at Aetrix Electronics and suitable for instrumentation amplifier reference, thermocouple cold-junction compensation, and photodiode bias supply applications requiring stable component supply, long-lifecycle availability, and traceable sourcing for industrial OEM programs.
Supply support for HZ16H3-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 manufacturer specializing in microcontrollers, analog mixed-signal devices, and power management ICs, with strong heritage in precision analog components from its Hitachi and NEC roots.
The HZ-L series was developed specifically for low-noise voltage reference applications in test & measurement, industrial sensing, and high-fidelity signal chains-addressing limitations of earlier Zener families in noise-sensitive analog subsystems.
FAQ
What is the exact zener voltage range for HZ16H3-E?
The HZ16H3-E has a guaranteed zener voltage range of 16.3 V minimum to 17.1 V maximum when tested at IZ = 0.5 mA and Ta = 25°C, as specified in the Electrical Characteristics table on page 3 of REJ03G0182-0300. This 0.8 V span reflects the "3" variant within the HZ16-xL family and is tighter than generic 5% tolerance Zeners.
Is HZ16H3-E suitable for use as a voltage reference in 16-bit ADC circuits?
Yes, the HZ16H3-E is suitable for 16-bit ADC reference stabilization due to its 14.0 Ω dynamic resistance, ≤1 μA leakage, and low-noise profile. When biased at 0.5 mA, its output variation remains under 0.1 LSB for typical 100 μA reference buffer load shifts-meeting INL requirements for precision converters without additional filtering.
Does HZ16H3-E have a specified temperature coefficient?
Yes, the HZ16H3-E exhibits a zener voltage temperature coefficient of approximately −0.06 %/°C (or −9.6 mV/°C) near its nominal 16.5 V operating point, as shown in Figure 2 of REJ03G0182-0300. This value is derived from the HZ-L series' characteristic curve and applies across the full 16.3–17.1 V range.
What is the maximum reverse leakage current for HZ16H3-E at 12 V?
The maximum reverse leakage current for HZ16H3-E is 1 μA at VR = 12 V and Ta = 25°C, per the Electrical Characteristics table on page 2 of REJ03G0182-0300. This low leakage supports high-impedance node interfacing without introducing measurable error current.
Can HZ16H3-E be substituted with a standard 1N4744A in low-noise designs?
No-while the 1N4744A has a similar nominal voltage (15 V), it lacks documented low-noise performance, has higher dynamic resistance (16 Ω), and shows no noise reduction specification versus the HZ-L series. Using 1N4744A in place of HZ16H3-E risks degrading SNR by ≥10 dB in sensitive analog paths.
HZ16H3-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:
- -
HZ16H3-E FAQ
1.How can I place an order for HZ16H3-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZ16H3-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 HZ16H3-E reliable?
The price and inventory of HZ16H3-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZ16H3-E is usually 5 days.
3.What payment methods are accepted for HZ16H3-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZ16H3-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZ16H3-E?
HZ16H3-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZ16H3-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 HZ16H3-E?
For technical support, including HZ16H3-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZ16H3-E requirements.
6.How does Aetrix verify that HZ16H3-E is sourced from the original manufacturer or authorized distributors?
All HZ16H3-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 HZ16H3-E meets industry standards.
7.What is the process for return or replacement of HZ16H3-E?
All HZ16H3-E units undergo pre-shipment inspection (PSI). If there is an issue with HZ16H3-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 HZ16H3-E part is unused and in its original packaging.
Return procedure for HZ16H3-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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