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Renesas HZC3.9TRF-E
- Part No.:
- HZC3.9TRF-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZC3.9TRF-E.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:84,000
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Product details
Overview
HZC3.9TRF-E from Renesas Electronics is a silicon epitaxial planar Zener diode designed for surge absorption in low-power signal line protection. It delivers a nominal Zener voltage of 3.9 V (min 3.7 V, max 4.1 V) at 5 mA, with 130 Ω dynamic resistance, 10 µA reverse current at 1.0 V, and 150 mW power dissipation in an ultra-small UFP package - used in USB data line ESD clamping and microcontroller I/O rail stabilization.
For engineers reviewing the HZC3.9TRF-E datasheet, HZC3.9TRF-E pinout, HZC3.9TRF-E application, or HZC3.9TRF-E equivalent, key selection criteria include its ±5% Zener tolerance at 5 mA, −55°C to +150°C storage range, JEITA-compliant UFP (PWSF0002ZA-A) footprint, and 30 kV ESD capability per IEC 61000-4-2 (C = 150 pF, R = 330 Ω).
Technical Context
The HZC3.9TRF-E operates as a two-terminal voltage reference and transient suppressor, leveraging silicon epitaxial planar junction technology for stable breakdown behavior under repetitive surge conditions. Its design targets low-energy clamping in space-constrained PCB layouts where thermal mass is limited.
It exhibits a Zener voltage temperature coefficient of approximately −0.02 %/°C (−0.08 mV/°C) near 3.9 V, confirmed by Fig.2 in the datasheet, and maintains rated performance up to 150°C junction temperature. The device is not intended for precision regulation but for robust overvoltage protection in consumer and industrial interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 3.7 V min / 4.1 V max at IZ = 5 mA - defines clamping threshold for 3.3 V logic rails |
| Reverse Current (IR) | ≤10 µA at VR = 1.0 V - ensures minimal leakage during normal operation |
| Dynamic Resistance (rd) | 130 Ω max at IZ = 5 mA - determines voltage shift under transient current load |
| Power Dissipation (Pd) | 150 mW at Ta = 25°C - limits sustained surge energy handling without derating |
| ESD Capability | 30 kV (contact), per IEC 61000-4-2 with C = 150 pF, R = 330 Ω - qualifies for Level 4 system-level ESD immunity |
| Junction Temperature (Tj) | 150°C max - sets upper thermal limit for continuous operation in enclosed environments |
| Package | UFP (JEITA PWSF0002ZA-A) - 1.7 mm × 1.2 mm × 0.6 mm footprint, SC-79 compatible, surface-mount optimized |
Pinout & Package
Package: Ultra Small Flat Lead Package (UFP), JEITA code PWSF0002ZA-A, SC-79 outline, mass 0.0016 g. Dimensions: 1.70 mm (L) × 1.20 mm (W) × 0.60 mm (T), with cathode mark on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode | Connected to protected node (e.g., USB D+); sinks surge current during overvoltage events |
| 2 | Anode | Connected to ground or lower-potential reference; completes clamping path for transient energy dissipation |
Key Features
| Feature | Design Value |
|---|---|
| Taped delivery | Supplied in embossed carrier tape (EIA-481 compliant) for automated SMT placement |
| Ultra-small UFP footprint | 1.7 mm × 1.2 mm area - enables routing under fine-pitch ICs and dense USB/USB-C port layouts |
| High ESD robustness | 30 kV contact discharge rating - exceeds IEC 61000-4-2 Level 4, reducing need for external TVS stages |
| Low leakage at 1.0 V | ≤10 µA reverse current - prevents signal integrity degradation on high-impedance analog or digital I/O lines |
| Stable Zener tempco | ≈−0.02 %/°C near 3.9 V - minimizes clamping voltage drift across −40°C to +85°C operating range |
Applications
| USB 2.0 Data Line Protection | Microcontroller GPIO Clamping |
|---|---|
Use Scenario: Protecting D+ and D− lines in embedded USB peripherals against ESD events during hot-plug insertion. IC Role / Device Role / Timing Role: Bidirectional transient voltage suppressor placed between data line and ground, activated within nanoseconds of overvoltage onset. Use Value: Maintains signal integrity below 480 Mbps while absorbing >30 kV contact ESD pulses without latch-up or parametric shift. |
Use Scenario: Safeguarding 3.3 V I/O pins of ARM Cortex-M microcontrollers in industrial sensor nodes exposed to cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance Zener clamp referenced to local ground, limiting pin voltage to ≤4.1 V during transients. Use Value: Prevents gate oxide damage and logic upset with <10 µA standby leakage, enabling direct connection to high-impedance ADC inputs. |
| Smart Card Interface Protection | Low-Power Sensor Signal Conditioning |
Use Scenario: Securing ISO/IEC 7816-3 compliant smart card readers against field-induced surges on VCC and I/O lines. IC Role / Device Role / Timing Role: Standoff voltage limiter on 3.3 V supply rail, activated only during overvoltage excursions above 4.1 V. Use Value: Enables compliance with EN 61000-4-2 without increasing board area or BOM count beyond existing decoupling capacitors. |
Use Scenario: Stabilizing bias voltage for MEMS accelerometers and Hall-effect sensors operating from shared 3.3 V LDO outputs. IC Role / Device Role / Timing Role: Precision Zener reference providing stable 3.9 V reference point for ratiometric sensor excitation. Use Value: Delivers ±5% voltage accuracy at 5 mA with <0.1 mV/°C drift - sufficient for 12-bit sensor systems without trimming. |
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 |
|---|---|---|---|
| BZX584-C3V9 | Same 3.9 V nominal Zener, but SOD-523 package (1.3 mm × 0.85 mm); 100 mW Pd; 90 Ω rd | Higher power density but lower surge energy margin; less robust at 30 kV ESD | Preferred where board space is tighter than 1.7 × 1.2 mm and peak surge energy is <10 mJ |
| MMBZ5227BS | 3.6 V nominal Zener, SOT-323 package; 200 mW Pd; 15 µA IR at 1 V; 30 kV ESD rated | Lower clamping voltage shifts system-level fault thresholds; higher leakage may affect high-Z analog paths | Chosen when 3.6 V clamping better matches 3.3 V rail tolerances and thermal derating headroom is critical |
Compared with BZX584-C3V9 and MMBZ5227BS, the HZC3.9TRF-E offers superior thermal stability in UFP packaging, tighter Zener tolerance at 5 mA, and verified 30 kV ESD performance - making it optimal for compact, high-reliability USB and MCU I/O protection where consistent clamping voltage and long-term parameter stability are prioritized over minimal footprint.
Availability
HZC3.9TRF-E is available at Aetrix Electronics and suitable for USB interface protection, microcontroller I/O clamping, and smart card reader surge suppression requiring stable component supply across production lifecycles.
Supply support for HZC3.9TRF-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 specializing in microcontrollers, analog and power devices, and advanced SoCs for industrial, automotive, and infrastructure markets.
The HZC Series belongs to Renesas' discrete protection portfolio, engineered specifically for low-energy transient suppression in portable and space-constrained electronics - emphasizing reliability, ESD hardness, and compatibility with high-speed digital interfaces.
FAQ
What is the Zener voltage tolerance of HZC3.9TRF-E at 5 mA?
The HZC3.9TRF-E has a Zener voltage range of 3.7 V to 4.1 V at IZ = 5 mA, representing a ±5.1% tolerance about the nominal 3.9 V value. This tolerance is guaranteed per the Electrical Characteristics table in Rev.2.00 (Jul 04, 2005) datasheet and applies across the full operating temperature range without additional derating.
Does HZC3.9TRF-E meet IEC 61000-4-2 Level 4 ESD requirements?
Yes, the HZC3.9TRF-E is rated for 30 kV contact discharge per IEC 61000-4-2 (C = 150 pF, R = 330 Ω, both forward and reverse direction, 10 pulses). This exceeds Level 4 (±8 kV contact) and qualifies the device for use in end-equipment requiring highest system-level ESD immunity without supplemental protection.
What is the thermal derating behavior of HZC3.9TRF-E above 25°C ambient?
Per Fig.2 in the datasheet, the HZC3.9TRF-E's power dissipation linearly derates from 150 mW at 25°C to 0 mW at 150°C ambient. The slope is −1.25 mW/°C, meaning at 85°C ambient, maximum allowable Pd is 75 mW. This must be accounted for in thermally constrained enclosures or high-power-density PCBs.
Can HZC3.9TRF-E be used as a precision voltage reference?
No - the HZC3.9TRF-E is not specified for precision reference use. Its Zener voltage has ±5.1% initial tolerance, temperature coefficient of ≈−0.02 %/°C, and dynamic resistance of 130 Ω. It is engineered for surge absorption and coarse clamping, not low-drift, low-noise regulation. For reference applications, Renesas' RLZ series or dedicated shunt references are recommended instead of HZC3.9TRF-E.
What does the "TRF" suffix indicate in HZC3.9TRF-E?
The "TRF" suffix in HZC3.9TRF-E denotes tape-and-reel packaging per EIA-481 standard, with 3000 units per reel. This is confirmed by Renesas ordering information documentation, where "TRF" consistently identifies taping format for UFP-packaged HZC Series devices - distinct from bulk (no suffix) or ammo pack (TR) variants.
HZC3.9TRF-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:
- -
HZC3.9TRF-E FAQ
1.How can I place an order for HZC3.9TRF-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZC3.9TRF-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 HZC3.9TRF-E reliable?
The price and inventory of HZC3.9TRF-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZC3.9TRF-E is usually 5 days.
3.What payment methods are accepted for HZC3.9TRF-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZC3.9TRF-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZC3.9TRF-E?
HZC3.9TRF-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZC3.9TRF-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 HZC3.9TRF-E?
For technical support, including HZC3.9TRF-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZC3.9TRF-E requirements.
6.How does Aetrix verify that HZC3.9TRF-E is sourced from the original manufacturer or authorized distributors?
All HZC3.9TRF-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 HZC3.9TRF-E meets industry standards.
7.What is the process for return or replacement of HZC3.9TRF-E?
All HZC3.9TRF-E units undergo pre-shipment inspection (PSI). If there is an issue with HZC3.9TRF-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 HZC3.9TRF-E part is unused and in its original packaging.
Return procedure for HZC3.9TRF-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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