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Renesas HZU4.7B1TRF-E
- Part No.:
- HZU4.7B1TRF-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZU4.7B1TRF-E.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:5,000
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Product details
Overview
HZU4.7B1TRF-E from Renesas Electronics is a silicon planar Zener diode designed for precision voltage stabilization in low-power analog and digital supply regulation circuits, with a nominal Zener voltage of 4.84 V to 5.04 V at 5 mA test current, 130 Ω dynamic resistance, and 200 mW power dissipation in an ultra-small URP surface-mount package.
For engineers reviewing the HZU4.7B1TRF-E datasheet, HZU4.7B1TRF-E pinout, HZU4.7B1TRF-E application, or HZU4.7B1TRF-E equivalent, key selection criteria include grade-specific Zener tolerance (±2.1% min–max), low leakage (<10 µA at 1.0 V reverse), thermal coefficient behavior near 0 mV/°C, and compatibility with automated SMT assembly on high-density PCBs.
Technical Context
The HZU4.7B1TRF-E operates as a two-terminal shunt regulator, maintaining stable reference voltage across its cathode–anode terminals under reverse-biased conditions. Its Zener breakdown mechanism is optimized for low-noise, low-drift performance in 25°C ambient environments, with junction temperature limited to 150°C.
It exhibits a near-zero temperature coefficient (~0 mV/°C) around 4.7 V, confirmed in Figure 2 of the datasheet, making it suitable for temperature-sensitive references. The device is rated for pulsed testing (40 ms pulse width) and supports continuous DC operation within derated power limits per Figure 3.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 4.84 V to 5.04 V at IZ = 5 mA - defines tight regulation window for 5 V rail sensing or feedback reference |
| Dynamic Resistance (rd) | 130 Ω max at IZ = 5 mA - determines output impedance and load regulation sensitivity |
| Reverse Current (IR) | ≤10 µA at VR = 1.0 V - ensures minimal standby leakage in battery-backed or low-power circuits |
| Power Dissipation (Pd) | 200 mW at Ta = 25°C - sets maximum continuous power handling before thermal derating applies |
| Junction Temperature (Tj) | 150°C max - constrains PCB layout for thermal relief and defines high-temp operational ceiling |
| Package | URP (SC-76A) - 0.8 mm × 1.25 mm × 0.45 mm footprint enabling ultra-compact placement |
| Marking Code | "4•7" laser-marked - enables visual identification and traceability on assembled boards |
Pinout & Package
Ultra-small Resin Package (URP), also designated SC-76A or JEITA PTSP0002ZA-A, measures 0.8 mm (W) × 1.25 mm (L) × 0.45 mm (H) with 2-pin surface-mount configuration and cathode polarity marked on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode | Connected to regulated output node; reverse-bias terminal where Zener conduction occurs |
| 2 | Anode | Connected to circuit ground or lower-potential rail; completes bias path for reference current |
Key Features
| Feature | Design Value |
|---|---|
| Grade-B1 Zener tolerance | ±2.1% (4.84–5.04 V) - tighter than standard B-grade parts, reducing calibration overhead in precision supplies |
| Low dynamic impedance | 130 Ω max - improves line/load regulation and reduces output ripple coupling |
| Zero-TC Zener point | ~0 mV/°C near 4.7 V - minimizes drift over industrial temperature range without external compensation |
| URP surface-mount package | 0.8 × 1.25 mm footprint - supports high-density routing and reflow-compatible assembly |
| Taped delivery (TRF) | 3,000 pcs/reel - enables direct integration into pick-and-place production lines |
Applications
| Industrial Sensor Signal Conditioning | USB Peripheral Power Supervision |
|---|---|
|
Use Scenario: Stabilizing reference voltage for 12-bit ADC front-end in temperature/humidity transmitters operating from unregulated 5 V rails. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable 4.9 V bias to op-amp input stage and ADC reference divider network. Use Value: Grade-B1 tolerance and low rd ensure <±0.5 LSB error contribution over –40°C to +85°C ambient. |
Use Scenario: Monitoring VBUS integrity in USB 2.0 host ports to detect undervoltage lockout before enumeration. IC Role / Device Role / Timing Role: Reverse-biased Zener clamping node that triggers comparator threshold when VBUS drops below 4.85 V. Use Value: Tight VZ window and sub-10 µA leakage enable fast, low-power detection without loading the bus. |
| Programmable Logic Controller I/O Module | IoT Node Battery Voltage Monitor |
|
Use Scenario: Providing isolated 5 V reference for optocoupler-based digital input conditioning in DIN-rail mounted PLC modules. IC Role / Device Role / Timing Role: Passive voltage clamp establishing logic-high threshold for 24 V DC input signal translation. Use Value: URP package allows placement adjacent to isolation barrier; 200 mW rating accommodates transient surges per IEC 61000-4-5. |
Use Scenario: Detecting end-of-life voltage in coin-cell–powered BLE sensor nodes (CR2032, nominal 3.0 V). IC Role / Device Role / Timing Role: Zener-based comparator reference generating wake-up interrupt when battery decays to ~2.8 V via resistor divider scaling. Use Value: Near-zero TC ensures consistent trip point across storage temperatures (–20°C to +60°C), extending shelf life accuracy. |
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 |
|---|---|---|---|
| BZX84-C4V7LT1G | 4.7 V ±5% (looser grade), SOT-23 package (1.3 × 2.9 mm), 350 mW Pd | Larger footprint; higher power but wider VZ spread increases calibration burden | Preferred where board space permits and higher surge immunity is required |
| MMSZ4704T1G | 4.7 V ±5%, SOD-123 package (1.8 × 1.4 mm), 500 mW Pd, 170 Ω rd | Higher rd and looser tolerance; larger body height may conflict with low-profile enclosures | Suitable for cost-sensitive consumer designs where ±5% regulation is acceptable |
Compared with BZX84-C4V7LT1G and MMSZ4704T1G, the HZU4.7B1TRF-E delivers superior voltage accuracy (±2.1% vs. ±5%), smaller URP footprint (60% area reduction vs. SOT-23), and optimized zero-TC behavior-making it preferred for space-constrained industrial and IoT reference designs demanding long-term stability.
Availability
HZU4.7B1TRF-E is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, USB peripheral power supervision, and programmable logic controller I/O modules requiring stable component supply, full traceability, and RoHS-compliant sourcing.
Supply support for HZU4.7B1TRF-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 headquartered in Japan, delivering microcontrollers, analog power devices, and timing solutions for industrial, automotive, and infrastructure markets.
The HZU Series belongs to Renesas' discrete Zener diode product line, engineered specifically for high-accuracy, low-drift voltage stabilization in compact surface-mount applications where thermal stability and grading consistency are critical.
FAQ
What is the Zener voltage tolerance for HZU4.7B1TRF-E?
The HZU4.7B1TRF-E has a Zener voltage range of 4.84 V to 5.04 V at 5 mA test current, corresponding to a ±2.1% tolerance about the nominal 4.7 V rating. This B1-grade specification is tighter than standard B-grade parts (±5%) and is confirmed in Table on page 2 of R07DS0423EJ1000 Rev.10.00. The HZU4.7B1TRF-E achieves this precision through binning during final test.
Does HZU4.7B1TRF-E have a zero-temperature-coefficient point?
Yes - the HZU4.7B1TRF-E exhibits a near-zero temperature coefficient (~0 mV/°C) at approximately 4.7 V, as shown in Figure 2 ("Temperature Coefficient vs. Zener Voltage") on page 5 of the datasheet. This characteristic minimizes voltage drift over temperature in industrial environments and eliminates need for external compensation networks in the HZU4.7B1TRF-E design.
What is the maximum reverse leakage current for HZU4.7B1TRF-E?
The HZU4.7B1TRF-E specifies a maximum reverse current (IR) of 10 µA at VR = 1.0 V, per the Electrical Characteristics table on page 2. This low leakage supports energy-efficient operation in always-on monitoring circuits and extends battery life in portable applications using the HZU4.7B1TRF-E as a reference element.
Is HZU4.7B1TRF-E compatible with lead-free reflow soldering?
Yes - the HZU4.7B1TRF-E uses Pb-free terminations and complies with JEDEC J-STD-020 moisture sensitivity level (MSL) requirements for standard reflow profiles. Its URP package is qualified for peak reflow temperatures up to 260°C, supporting compatibility with common lead-free assembly processes used for the HZU4.7B1TRF-E.
What does the "TRF" suffix indicate in HZU4.7B1TRF-E?
The "TRF" suffix denotes taping format: TRF = 3,000 pieces per reel, using embossed carrier tape conforming to EIA-481 standards. This packaging enables direct use in automated SMT placement equipment and is specified in the Ordering Information section on page 1 of the HZU4.7B1TRF-E datasheet.
HZU4.7B1TRF-E Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Obsolete
- 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:
- -
HZU4.7B1TRF-E FAQ
1.How can I place an order for HZU4.7B1TRF-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZU4.7B1TRF-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 HZU4.7B1TRF-E reliable?
The price and inventory of HZU4.7B1TRF-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZU4.7B1TRF-E is usually 5 days.
3.What payment methods are accepted for HZU4.7B1TRF-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZU4.7B1TRF-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZU4.7B1TRF-E?
HZU4.7B1TRF-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZU4.7B1TRF-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 HZU4.7B1TRF-E?
For technical support, including HZU4.7B1TRF-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZU4.7B1TRF-E requirements.
6.How does Aetrix verify that HZU4.7B1TRF-E is sourced from the original manufacturer or authorized distributors?
All HZU4.7B1TRF-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 HZU4.7B1TRF-E meets industry standards.
7.What is the process for return or replacement of HZU4.7B1TRF-E?
All HZU4.7B1TRF-E units undergo pre-shipment inspection (PSI). If there is an issue with HZU4.7B1TRF-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 HZU4.7B1TRF-E part is unused and in its original packaging.
Return procedure for HZU4.7B1TRF-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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