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Renesas HZC4.7TRF-E
- Part No.:
- HZC4.7TRF-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZC4.7TRF-E.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:62,000
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Product details
Overview
HZC4.7TRF-E from Renesas Electronics is a silicon epitaxial planar Zener diode optimized for surge absorption in low-power signal-line protection circuits, featuring a nominal Zener voltage of 4.7 V (4.42–4.90 V), 150 mW power dissipation, 130 Ω dynamic resistance at 5 mA, and ESD capability of ±30 kV (IEC 61000-4-2, C = 150 pF, R = 330 Ω). It is used in USB data lines, sensor I/O interfaces, and microcontroller reset inputs.
For engineers reviewing the HZC4.7TRF-E datasheet, HZC4.7TRF-E pinout, HZC4.7TRF-E application, or HZC4.7TRF-E equivalent, key selection criteria include Zener voltage tolerance, low dynamic impedance for clamping fidelity, ultra-small UFP package footprint, and verified ESD robustness without external series resistance.
Technical Context
The HZC4.7TRF-E operates as a two-terminal voltage-reference clamp, leveraging silicon epitaxial planar construction to achieve tight Zener voltage distribution and stable temperature coefficient (−0.02 %/°C typical near 4.7 V). Its design targets transient suppression rather than precision regulation, with reverse current limited to ≤10 µA at 1.0 V below VZ.
It is rated for junction temperatures up to 150°C and storage from −55°C to +150°C, and is specified for use in standard-grade applications including office equipment, audio devices, and industrial control I/O modules per Renesas quality classification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 4.42–4.90 V at IZ = 5 mA - defines clamping threshold for overvoltage events on 3.3 V or 5 V logic lines |
| Power Dissipation (Pd) | 150 mW at Ta = 25°C - limits sustained surge energy handling without thermal runaway |
| Dynamic Resistance (rd) | 130 Ω max at IZ = 5 mA - ensures low voltage overshoot during fast transients (e.g., ESD) |
| Reverse Current (IR) | ≤10 µA at VR = 3.7 V - guarantees minimal leakage in standby mode for battery-powered sensors |
| ESD Capability | ±30 kV contact discharge (IEC 61000-4-2) - meets Level 4 immunity for end-equipment compliance |
| Junction Temperature (Tj) | 150°C max - supports operation in enclosed industrial enclosures with limited airflow |
Pinout & Package
Package: Ultra Small Flat Lead (UFP), JEITA code SC-79, Renesas code PWSF0002ZA-A, dimensions 1.70 × 1.20 × 0.60 mm (L × W × H), mass 0.0016 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode | Connected to protected line (e.g., USB D+); carries surge current into ground path during clamping |
| 2 | Anode | Connected to system ground; completes low-inductance return path for transient current |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-small UFP package | 1.7 mm × 1.2 mm footprint enables placement directly at connector or IC pin for minimal trace inductance |
| Taped delivery | Supplied in EIA-481-compliant carrier tape for high-speed SMT assembly without manual handling |
| High ESD robustness | ±30 kV contact discharge rating eliminates need for additional TVS stages in cost-sensitive consumer designs |
| Stable temperature coefficient | −0.02 %/°C near 4.7 V ensures predictable clamping across −25°C to +85°C ambient range |
Applications
| USB 2.0 Data Line Protection | Microcontroller Reset Input Clamp |
|---|---|
Use Scenario: Protecting D+ and D− lines against ESD events during hot-plug insertion of USB peripherals. IC Role / Device Role / Timing Role: Two-terminal shunt clamp placed within 2 mm of USB connector, conducting surge current to ground before it reaches the PHY IC. Use Value: Prevents latch-up or damage to 3.3 V USB transceivers while maintaining signal integrity due to sub-130 Ω dynamic impedance. | Use Scenario: Securing the active-low reset input of an ARM Cortex-M0 microcontroller against voltage spikes induced by nearby relay switching. IC Role / Device Role / Timing Role: Standby-mode Zener clamp holding reset line at ≤0.7 V during overvoltage, ensuring clean deassertion after transient decay. Use Value: Eliminates need for RC filter delay, enabling immediate reset release post-surge with <1 µs recovery time. |
| Sensor Analog Output Protection | Industrial I/O Module Signal Conditioning |
Use Scenario: Safeguarding 0–5 V analog output of a temperature sensor IC exposed to field wiring noise and accidental 24 V miswiring. IC Role / Device Role / Timing Role: Bidirectional clamping element referenced to local ground, limiting output swing to ±5.5 V envelope. Use Value: Maintains sensor accuracy (no forward conduction in normal operation) while surviving 24 V shorts for >100 ms without degradation. | Use Scenario: Front-end protection for 4–20 mA current-loop receiver inputs in PLC analog input cards. IC Role / Device Role / Timing Role: Low-leakage (≤10 µA) Zener placed across input terminals to absorb induced surges before op-amp input stage. Use Value: Enables compliance with IEC 61000-4-5 Level 3 (2 kV surge) without increasing board area or BOM count. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode surge absorption applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ4700LT1G | VZ = 4.7 V (4.3–5.1 V), Pd = 200 mW, rd = 100 Ω, SOT-23 package (2.9 × 1.3 mm) | Larger footprint; higher power allows longer surge duration but increases layout area | Select when higher surge energy handling is required and PCB space permits larger package. |
| BZX384-B4V7 | VZ = 4.7 V (4.4–5.0 V), Pd = 300 mW, rd = 90 Ω, SOD-323 package (1.7 × 1.25 mm) | Nearly identical footprint; slightly lower rd but no published ESD rating beyond 8 kV | Select when tighter dynamic impedance is critical and ESD testing is performed at system level. |
Compared with MMBZ4700LT1G and BZX384-B4V7, the HZC4.7TRF-E offers the smallest footprint (UFP/SC-79), guaranteed ±30 kV ESD rating, and Renesas' documented suitability for standard-grade industrial I/O-making it optimal for space-constrained, high-reliability signal-line protection where board area and certified ESD margin are prioritized.
Availability
HZC4.7TRF-E is available at Aetrix Electronics and suitable for USB interface protection, microcontroller reset conditioning, and sensor analog output safeguarding requiring stable component supply and full traceability.
Supply support for HZC4.7TRF-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 Japanese semiconductor manufacturer formed in 2010 through the merger of NEC Electronics and Renesas Technology, specializing in microcontrollers, analog, and power devices.
The HZC Series belongs to Renesas' discrete protection portfolio, designed specifically for compact, high-reliability surge suppression in consumer, industrial, and office electronics signal paths.
FAQ
What is the Zener voltage tolerance of HZC4.7TRF-E at 5 mA test current?
The HZC4.7TRF-E has a Zener voltage range of 4.42 V to 4.90 V when tested at IZ = 5 mA, corresponding to a ±5% tolerance about the nominal 4.7 V value. This specification is measured under pulse conditions (Pw = 40 ms) to avoid self-heating effects, and is confirmed in the official Renesas HZC Series datasheet (Rev. 2.00, Jul 2005).
Is HZC4.7TRF-E suitable for protecting a 3.3 V I²C bus line?
Yes, the HZC4.7TRF-E is suitable for 3.3 V I²C bus protection when placed between SDA/SCL and ground. Its 4.42–4.90 V Zener voltage ensures it remains non-conductive during normal 3.3 V operation (with ≤10 µA leakage at 3.7 V), yet clamps ESD or coupling transients above ~4.4 V. Its 130 Ω dynamic resistance and ±30 kV ESD rating make HZC4.7TRF-E effective for I²C signal integrity preservation.
What is the thermal derating behavior of HZC4.7TRF-E above 25°C ambient?
HZC4.7TRF-E's power dissipation derates linearly above 25°C ambient temperature, reaching 0 mW at approximately 125°C per the published "Power Dissipation vs. Ambient Temperature" curve (Fig.2, page 4). The derating slope is ~1.2 mW/°C, meaning at 75°C ambient, maximum allowable Pd is ~90 mW. This must be accounted for in sealed enclosures or high-temperature industrial environments.
Does HZC4.7TRF-E have a specified junction-to-air thermal resistance (RθJA)?
No, the Renesas HZC Series datasheet does not specify RθJA for HZC4.7TRF-E. Thermal performance is characterized via the ambient temperature derating curve (Fig.2), which shows Pd decreasing from 150 mW at 25°C to 0 mW at ~125°C. Designers should rely on this empirical curve rather than calculating junction temperature using RθJA, as no numerical thermal resistance value is provided for the UFP package in the official documentation.
Can HZC4.7TRF-E be used in automotive applications?
No, HZC4.7TRF-E is classified as a "Standard" quality grade device per Renesas' quality grading system and is intended for computers, office equipment, audio devices, and industrial robots-not automotive or safety-critical systems. It lacks AEC-Q200 qualification, extended temperature range certification (−40°C to +125°C), or PPAP documentation. For automotive use, Renesas recommends qualified alternatives such as the RV4xxx series or equivalent AEC-Q200 Zener diodes.
HZC4.7TRF-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:
- -
HZC4.7TRF-E FAQ
1.How can I place an order for HZC4.7TRF-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZC4.7TRF-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 HZC4.7TRF-E reliable?
The price and inventory of HZC4.7TRF-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZC4.7TRF-E is usually 5 days.
3.What payment methods are accepted for HZC4.7TRF-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZC4.7TRF-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZC4.7TRF-E?
HZC4.7TRF-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZC4.7TRF-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 HZC4.7TRF-E?
For technical support, including HZC4.7TRF-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZC4.7TRF-E requirements.
6.How does Aetrix verify that HZC4.7TRF-E is sourced from the original manufacturer or authorized distributors?
All HZC4.7TRF-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 HZC4.7TRF-E meets industry standards.
7.What is the process for return or replacement of HZC4.7TRF-E?
All HZC4.7TRF-E units undergo pre-shipment inspection (PSI). If there is an issue with HZC4.7TRF-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 HZC4.7TRF-E part is unused and in its original packaging.
Return procedure for HZC4.7TRF-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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