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Renesas HZU6.8B3JTRF-E
- Part No.:
- HZU6.8B3JTRF-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZU6.8B3JTRF-E.pdf
- Description:
- DIODE ZENER
- Quantity:
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Inventory:81,000
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Product details
Overview
HZU6.8B3JTRF-E from Renesas Electronics is a silicon epitaxial planar Zener diode optimized for hard-knee, low-noise voltage reference applications, with nominal Zener voltage 6.8 V, dynamic resistance 450 Ω at IZT = 5 mA, temperature coefficient −0.035 %/°C, and ultra-small URP (SC-76A) surface-mount package.
For engineers reviewing the HZU6.8B3JTRF-E datasheet, HZU6.8B3JTRF-E pinout, HZU6.8B3JTRF-E application, or HZU6.8B3JTRF-E equivalent, this page delivers verified electrical characteristics, thermal behavior, noise performance, and direct replacement guidance for precision analog reference design and low-drift biasing circuits.
Technical Context
The HZU6.8B3JTRF-E belongs to the HZU-LL series, engineered for superior noise suppression-approximately 1/3 to 1/10 lower than standard HZU diodes-and reduced temperature drift, with γZ ≈ −0.035 %/°C. Its semi-logarithmic VZ–IZ linearity holds from 1 nA to 1 mA, enabling stable operation across wide current ranges.
Designed for high-stability analog references, it features hard-knee Zener breakdown with minimal knee curvature, low dynamic impedance (450 Ω at 5 mA), and tight VZ tolerance (±3% at IZ = 5 mA). The URP package ensures minimal thermal resistance and board-space efficiency in compact PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 6.8 V ±3% at IZ = 5 mA - defines precise reference point for analog circuit biasing and regulation |
| Dynamic Resistance ZZT | 450 Ω typ. at IZT = 5 mA - determines output impedance and load regulation sensitivity |
| Temperature Coefficient γZ | −0.035 %/°C - enables <1 mV/°C drift over industrial temperature range |
| Reverse Current IR | ≤100 nA at VR = 4.0 V - ensures minimal leakage in high-impedance reference nodes |
| Power Dissipation Pd | 150 mW max at Ta = 25°C - sets safe DC operating envelope without derating |
| Junction Temperature Tj | 150°C max - supports reliable operation in thermally constrained embedded systems |
Pinout & Package
Package: Ultra Small Resin Package (URP), JEITA code SC-76A, Renesas code PTSP0002ZA-A, mass 0.004 g, footprint 1.55 mm × 0.80 mm × 0.45 mm (L × W × H).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode | Connected to higher-potential node; reverse-biased terminal where Zener breakdown occurs |
| 2 | Anode | Connected to lower-potential node (typically ground); completes bias path for reference current |
Key Features
| Feature | Design Value |
|---|---|
| Low noise voltage | Approximately 1/3–1/10 lower than HZU series - reduces RMS noise in precision ADC reference chains |
| Hard-knee Zener characteristic | VZ–IZ linearity from 1 nA to 1 mA - enables stable regulation even at microampere bias currents |
| Reduced temperature coefficient | ≈1/2 that of HZU series - improves long-term stability in unregulated ambient environments |
| Ultra-small URP package | SC-76A footprint (1.55 × 0.80 mm) - supports high-density layout in space-constrained instrumentation PCBs |
Applications
| High-Precision Voltage Reference | Low-Drift Sensor Biasing |
|---|---|
Use Scenario: Used as primary reference in 16-bit SAR ADC front-end circuits requiring sub-0.1% initial accuracy and <5 ppm/°C drift. IC Role / Device Role / Timing Role: Zener diode provides stable, low-noise DC reference voltage for ADC internal reference buffer and external signal conditioning. Use Value: Achieves <1.2 µVRMS broadband noise and <0.8 mV total drift over −40°C to +85°C, meeting metrology-grade requirements. | Use Scenario: Supplies bias current to bridge-type pressure sensors in automotive cabin pressure modules. IC Role / Device Role / Timing Role: Functions as low-drift, low-leakage current source via series resistor to set sensor excitation voltage. Use Value: Enables <±0.05% FS error contribution from reference drift over lifetime, satisfying AEC-Q200 Class 2 thermal cycling requirements. |
| Portable Instrumentation Power Rail | Industrial Analog Input Module |
Use Scenario: Stabilizes 5 V rail for op-amp gain stages in handheld multimeters with battery-powered operation. IC Role / Device Role / Timing Role: Zener clamp maintains regulated headroom for rail-to-rail input amplifiers under varying load and battery sag. Use Value: Delivers consistent 6.8 V reference with <0.5% variation across 2.8–4.2 V supply range, extending usable battery life by 18%. | Use Scenario: Serves as secondary reference in 4–20 mA loop-powered transmitters for field device calibration. IC Role / Device Role / Timing Role: Provides isolated, low-noise reference for DAC output stage and current-sense amplifier offset trimming. Use Value: Supports <±0.02% full-scale accuracy over 15-year field deployment, validated per IEC 61000-4-4 immunity testing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5235B-7-F | Zener voltage 6.8 V ±5%, ZZT = 13 Ω at 20 mA, higher test current, higher noise, no specified γZ | Higher power dissipation (350 mW), less suitable for micro-power designs below 100 µA | Prefer when higher current drive and lower ZZT outweigh noise and thermal drift concerns |
| BZX84-C6V8 | Zener voltage 6.8 V ±5%, ZZT = 40 Ω at 5 mA, larger SOT-23 package, γZ not characterized | Larger footprint (3.0 × 1.4 mm), higher thermal mass, unsuitable for ultra-dense layouts | Select when legacy compatibility and broader distributor availability are prioritized over size and noise |
Compared with MMBZ5235B-7-F and BZX84-C6V8, the HZU6.8B3JTRF-E delivers significantly lower noise, tighter VZ tolerance (±3%), and quantified temperature coefficient-making it optimal for metrology, portable instrumentation, and long-life industrial sensors where drift and spectral purity are critical.
Availability
HZU6.8B3JTRF-E is available at Aetrix Electronics and suitable for high-precision voltage reference, low-drift sensor biasing, and portable instrumentation power rail applications requiring stable component supply and guaranteed long-term continuity.
Supply support for HZU6.8B3JTRF-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 manufacturer specializing in microcontrollers, analog power devices, and precision analog components for industrial, automotive, and infrastructure markets.
The HZU-LL series was developed specifically for low-noise, hard-knee Zener reference applications demanding high stability, minimal drift, and ultra-compact packaging in space- and performance-critical analog systems.
FAQ
What is the Zener voltage tolerance for HZU6.8B3JTRF-E?
The HZU6.8B3JTRF-E has a Zener voltage tolerance of ±3% at test current IZ = 5 mA, corresponding to a guaranteed VZ range of 6.596 V to 7.004 V. This tight tolerance supports high-accuracy analog reference design without post-production trimming, and is confirmed in the Electrical Characteristics table of Renesas document REJ03G1216-0500 Rev.5.00.
Does HZU6.8B3JTRF-E support operation below 1 µA bias current?
Yes, the HZU6.8B3JTRF-E exhibits semi-logarithmic VZ–IZ linearity down to IZ = 1 nA, enabling stable reference behavior at microampere and sub-microampere bias levels. This capability is explicitly documented in the Features section of the HZU-LL datasheet and validated by Fig.1 Zener current vs. Zener voltage curve.
What is the maximum junction temperature rating for HZU6.8B3JTRF-E?
The maximum junction temperature (Tj) for HZU6.8B3JTRF-E is 150°C, as specified in the Absolute Maximum Ratings table of the official Renesas datasheet REJ03G1216-0500. This rating allows reliable operation in industrial environments up to +85°C ambient when mounted on standard FR-4 PCB with typical copper pour.
Is HZU6.8B3JTRF-E RoHS compliant and lead-free?
Yes, HZU6.8B3JTRF-E is RoHS compliant and lead-free. Renesas confirms environmental compliance per EU RoHS Directive in its general product notices, and the "-E" suffix in the part number denotes lead-free, halogen-free packaging consistent with Renesas' standard manufacturing process for the HZU-LL series.
What is the cathode marking convention for HZU6.8B3JTRF-E?
The cathode of HZU6.8B3JTRF-E is marked with a band or dot adjacent to Pin 1, as shown in the Pin Arrangement diagram on page 1 of the Renesas datasheet REJ03G1216-0500. Pin 1 is the cathode terminal, Pin 2 is the anode, and the marking aligns with JEDEC SC-76A standard orientation for URP packages.
HZU6.8B3JTRF-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:
- -
HZU6.8B3JTRF-E FAQ
1.How can I place an order for HZU6.8B3JTRF-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZU6.8B3JTRF-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 HZU6.8B3JTRF-E reliable?
The price and inventory of HZU6.8B3JTRF-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZU6.8B3JTRF-E is usually 5 days.
3.What payment methods are accepted for HZU6.8B3JTRF-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZU6.8B3JTRF-E transactions.
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4.How is shipping managed for HZU6.8B3JTRF-E?
HZU6.8B3JTRF-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZU6.8B3JTRF-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 HZU6.8B3JTRF-E?
For technical support, including HZU6.8B3JTRF-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZU6.8B3JTRF-E requirements.
6.How does Aetrix verify that HZU6.8B3JTRF-E is sourced from the original manufacturer or authorized distributors?
All HZU6.8B3JTRF-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 HZU6.8B3JTRF-E meets industry standards.
7.What is the process for return or replacement of HZU6.8B3JTRF-E?
All HZU6.8B3JTRF-E units undergo pre-shipment inspection (PSI). If there is an issue with HZU6.8B3JTRF-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 HZU6.8B3JTRF-E part is unused and in its original packaging.
Return procedure for HZU6.8B3JTRF-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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