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Renesas HZU4ALLTRF-E
- Part No.:
- HZU4ALLTRF-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZU4ALLTRF-E.pdf
- Description:
- DIODE ZENER
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Product details
Overview
HZU4ALLTRF-E from Renesas Electronics is a silicon epitaxial planar Zener diode optimized for hard-knee, low-noise voltage reference applications. It delivers a nominal Zener voltage of 3.6 V (min 3.4 V, max 3.8 V) at 0.5 mA, with dynamic resistance of 370 Ω (typ), reverse current ≤100 nA at 1.5 V, and temperature coefficient of −0.03 %/°C - enabling precision biasing in analog sensor front-ends and low-drift power supply monitors.
For engineers reviewing the HZU4ALLTRF-E datasheet, HZU4ALLTRF-E pinout, HZU4ALLTRF-E application, or HZU4ALLTRF-E equivalent, key selection criteria include its ultra-low noise voltage (≈1/3–1/10 that of standard HZU series), semi-logarithmic VZ-IZ linearity from 1 nA to 1 mA, and suitability for space-constrained surface-mount designs requiring stable sub-1% voltage references below 4 V.
Technical Context
The HZU4ALLTRF-E operates as a two-terminal, passive voltage reference diode with cathode-anode polarity. Its hard-knee Zener characteristic is achieved via epitaxial planar process technology, ensuring tight VZ tolerance (±0.2 V at IZ = 0.5 mA) and low dynamic impedance across microampere-level operating currents.
It exhibits semi-logarithmic linearity in the Zener region (IZ = 1 nA to 1 mA), enabling predictable regulation in ultra-low-power circuits. Temperature coefficient is specified at −0.03 %/°C (−0.04 mV/°C), approximately half that of the legacy HZU series, reducing thermal drift in battery-powered instrumentation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 3.4 V min to 3.8 V max at IZ = 0.5 mA - defines stable reference point for low-voltage analog circuits |
| Dynamic Resistance (ZZT) | 370 Ω typ at IZT = 0.5 mA - determines output impedance and load regulation sensitivity |
| Reverse Current (IR) | ≤100 nA at VR = 1.5 V - ensures minimal leakage in high-impedance bias networks |
| Temperature Coefficient (γZ) | −0.03 %/°C - enables <±2 mV drift over −40°C to +85°C ambient range |
| Power Dissipation (Pd) | 150 mW max at Ta = 25°C - sets maximum continuous DC bias current to ~42 mA at 3.6 V |
| Junction Temperature (Tj) | 150°C max - supports operation in thermally demanding PCB layouts with limited copper area |
Pinout & Package
The HZU4ALLTRF-E is housed in an Ultra Small Resin Package (URP), also designated SC-76A or JEITA code PTSP0002ZA-A, with 2.35 mm × 1.25 mm footprint and 0.45 mm height - optimized for high-density SMT assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode | Connected to higher-potential node; carries reverse-biased current during Zener conduction |
| 2 | Anode | Connected to lower-potential node (typically ground or return path); completes bias loop |
Key Features
| Feature | Design Value |
|---|---|
| Hard-knee Zener characteristic | Sharp, well-defined breakdown onset at 3.6 V enables precise threshold detection without soft turn-on ambiguity |
| Ultra-low noise voltage | Approximately 1/3–1/10 lower than HZU series - critical for high-SNR sensor signal conditioning |
| Semi-logarithmic VZ-IZ linearity | Valid from 1 nA to 1 mA - supports stable reference generation across wide current scaling (e.g., µA sleep mode to mA active mode) |
| Reduced temperature coefficient | ≈1/2 that of HZU series - improves long-term stability in unregulated thermal environments |
Applications
| High-Precision Sensor Biasing | Low-Drift Power Supply Monitor |
|---|---|
Use Scenario: Providing stable excitation voltage to bridge-based pressure sensors in industrial IoT nodes. IC Role / Device Role / Timing Role: Two-terminal passive voltage reference establishing fixed bias point for Wheatstone bridge. Use Value: Sub-0.2 V VZ tolerance and −0.03 %/°C TC ensure <±5 mV total drift over −25°C to +75°C, preserving measurement accuracy. | Use Scenario: Monitoring 3.3 V rail integrity in battery-powered medical wearables. IC Role / Device Role / Timing Role: Zener clamp detecting undervoltage condition before system reset. Use Value: 100 nA reverse leakage at 1.5 V allows direct connection to CMOS input without pull-up loading, minimizing quiescent current. |
| Low-Power Analog Front-End Reference | Calibration Voltage Source |
Use Scenario: Generating reference for 12-bit SAR ADC in portable test equipment. IC Role / Device Role / Timing Role: Passive voltage reference feeding ADC's VREF pin in single-supply configuration. Use Value: 370 Ω dynamic resistance limits reference error to <0.5 LSB under 100 µA load variation, maintaining ENOB > 11.5 bits. | Use Scenario: On-board calibration point for factory-trimmed voltage regulators. IC Role / Device Role / Timing Role: Stable, traceable Zener node used during production trim and post-assembly verification. Use Value: Laser-marked HZU4ALLTRF-E provides repeatable 3.6 V reference with ±0.2 V initial tolerance - sufficient for ±0.5% regulator calibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5226BS-7-F | VZ = 3.3 V (±5%), ZZT = 17 Ω @ 20 mA - lower impedance but higher test current; TC ≈ −0.05 %/°C | Requires ≥20 mA for spec compliance - unsuitable for µA-biased circuits | Select when higher current drive and tighter VZ tolerance are needed, and thermal drift is secondary |
| BZX84-C3V6 | VZ = 3.6 V (±5%), ZZT = 90 Ω @ 5 mA - moderate impedance; TC ≈ −0.025 %/°C; no guaranteed low-noise spec | Lacks documented low-noise performance and semi-log linearity - not validated for precision analog use | Choose for cost-sensitive general-purpose regulation where noise and microampere-linearity are not required |
Compared with MMBZ5226BS-7-F and BZX84-C3V6, the HZU4ALLTRF-E uniquely combines hard-knee behavior, ultra-low noise, and verified semi-logarithmic linearity down to 1 nA - making it the only option among the three qualified for low-power, high-accuracy reference design.
Availability
HZU4ALLTRF-E is available at Aetrix Electronics and suitable for high-precision sensor biasing, low-drift power supply monitoring, and low-power analog front-end reference applications requiring stable component supply and consistent parametric performance across production lots.
Supply support for HZU4ALLTRF-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, and timing solutions for industrial, automotive, and infrastructure markets.
The HZU-LL Series was designed specifically for low-noise, hard-knee Zener reference applications in space-constrained, battery-operated systems - emphasizing microampere-level linearity and thermal stability over raw power handling.
FAQ
What is the Zener voltage tolerance of the HZU4ALLTRF-E at 0.5 mA?
The HZU4ALLTRF-E has a Zener voltage range of 3.4 V minimum to 3.8 V maximum when tested at IZ = 0.5 mA, corresponding to a ±0.2 V absolute tolerance. This specification is guaranteed per the Renesas datasheet REJ03G1216-0500 Rev.5.00 and applies directly to the HZU4ALLTRF-E device in its URP package. The tolerance reflects process control for hard-knee Zener behavior, not statistical distribution.
Does the HZU4ALLTRF-E support operation below 1 µA Zener current?
Yes, the HZU4ALLTRF-E maintains semi-logarithmic VZ-IZ linearity down to 1 nA, as confirmed in the Electrical Characteristics table and Fig.1 of the official datasheet. At IZ = 10 nA, VZ remains within specification, enabling use in ultra-low-power wake-up circuits and energy-harvesting systems where the HZU4ALLTRF-E serves as a stable reference without loading the source.
What is the cathode marking convention on the HZU4ALLTRF-E package?
The HZU4ALLTRF-E uses a cathode mark located adjacent to Pin 1, as shown in the "Pin Arrangement" diagram on page 1 of the Renesas datasheet. Pin 1 is the cathode terminal, identified by a visible marking (e.g., band or dot) on the top surface of the URP package. This polarity must be observed during PCB layout to ensure correct reverse-bias operation of the HZU4ALLTRF-E.
Is the HZU4ALLTRF-E RoHS compliant and lead-free?
Yes, the HZU4ALLTRF-E is RoHS compliant and lead-free, consistent with Renesas Electronics' environmental policy and the product's qualification under JEDEC standards. The "TRF" suffix in the part number denotes tape-and-reel packaging with lead-free finish, and the device meets EU RoHS Directive 2011/65/EU requirements as documented in Renesas' material declarations for the HZU-LL Series.
How does the temperature coefficient of the HZU4ALLTRF-E compare to the standard HZU series?
The HZU4ALLTRF-E has a temperature coefficient of approximately −0.03 %/°C, which is about half the value of the standard HZU series. This improvement is explicitly stated in the "Features" section of the datasheet and directly reduces thermal drift in precision applications - for example, limiting VZ shift to <±2.5 mV over a 50°C ambient change, whereas the standard HZU would drift nearly twice as much. This performance is intrinsic to the HZU4ALLTRF-E's epitaxial planar structure.
HZU4ALLTRF-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:
- -
HZU4ALLTRF-E FAQ
1.How can I place an order for HZU4ALLTRF-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZU4ALLTRF-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 HZU4ALLTRF-E reliable?
The price and inventory of HZU4ALLTRF-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZU4ALLTRF-E is usually 5 days.
3.What payment methods are accepted for HZU4ALLTRF-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZU4ALLTRF-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZU4ALLTRF-E?
HZU4ALLTRF-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZU4ALLTRF-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 HZU4ALLTRF-E?
For technical support, including HZU4ALLTRF-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZU4ALLTRF-E requirements.
6.How does Aetrix verify that HZU4ALLTRF-E is sourced from the original manufacturer or authorized distributors?
All HZU4ALLTRF-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 HZU4ALLTRF-E meets industry standards.
7.What is the process for return or replacement of HZU4ALLTRF-E?
All HZU4ALLTRF-E units undergo pre-shipment inspection (PSI). If there is an issue with HZU4ALLTRF-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 HZU4ALLTRF-E part is unused and in its original packaging.
Return procedure for HZU4ALLTRF-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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