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Renesas HZC6.8TRF-E
- Part No.:
- HZC6.8TRF-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZC6.8TRF-E.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:4,000
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Product details
Overview
HZC6.8TRF-E from Renesas Electronics is a silicon epitaxial planar Zener diode optimized for surge absorption in low-power signal and power rail protection circuits, with a nominal Zener voltage of 6.8 V (min 6.47 V, max 7.14 V), 150 mW power dissipation, 30 Ω dynamic resistance at 5 mA, and ESD capability of ±30 kV (HBM, C = 150 pF, R = 330 Ω). It is used in I/O port transient suppression and voltage reference stabilization in consumer and industrial electronics.
For engineers reviewing the HZC6.8TRF-E datasheet, HZC6.8TRF-E pinout, HZC6.8TRF-E application, or HZC6.8TRF-E equivalent, key selection criteria include its ultra-small UFP package (SC-79), tight Zener voltage tolerance (±5%), low temperature coefficient (−0.02 %/°C), and suitability for surface-mount surge clamping in space-constrained designs.
Technical Context
The HZC6.8TRF-E operates as a two-terminal voltage-regulating device relying on controlled reverse breakdown. Its Zener mechanism provides stable clamping at 6.8 V under 5 mA test current, with dynamic resistance measured at 30 Ω to ensure predictable voltage deviation during transient events.
Designed for ambient temperatures from −55°C to +150°C, it features a junction temperature limit of 150°C and storage range matching operational extremes. Its ESD robustness (±30 kV HBM) enables direct integration into unshielded I/O lines without additional protection stages.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.47 V to 7.14 V at IZ = 5 mA - defines clamping threshold for overvoltage protection |
| Power Dissipation (Pd) | 150 mW at Ta = 25°C - limits continuous surge energy handling in compact UFP package |
| Dynamic Resistance (rd) | 30 Ω at IZ = 5 mA - determines voltage shift under varying clamp current |
| Reverse Current (IR) | ≤1.0 µA at VR = 3.5 V - ensures minimal leakage below knee voltage |
| ESD Capability | ±30 kV per HBM (C = 150 pF, R = 330 Ω) - qualifies for direct I/O line protection without external TVS staging |
| Junction Temperature (Tj) | 150°C maximum - sets thermal derating boundary for PCB layout and power cycling |
Pinout & Package
Package: Ultra Small Flat Lead (UFP), JEITA code SC-79, Renesas code PWSF0002ZA-A, dimensions 1.70 mm × 1.20 mm × 0.60 mm (L × W × T), mass 0.0016 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode | Connected to protected node (e.g., MCU I/O); accepts positive transients relative to anode |
| 2 | Anode | Connected to ground or lower-potential rail; completes clamping path during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-small UFP (SC-79) package | Enables high-density placement on portable and IoT PCBs with footprint < 2.0 mm² |
| Taped delivery format | Supports automated SMT assembly without manual handling or orientation concerns |
| Zener voltage tolerance ±5% | Ensures consistent clamping across production batches without post-assembly calibration |
| Negative temperature coefficient (−0.02 %/°C) | Provides predictable voltage drift over operating temperature range, aiding system-level stability |
| High ESD immunity (±30 kV HBM) | Eliminates need for supplemental ESD protection in Class A/B consumer interfaces |
Applications
| USB Data Line Protection | Microcontroller I/O Clamp |
|---|---|
Use Scenario: Clamping ESD events on USB 2.0 D+ and D− lines before they reach the PHY interface. IC Role / Device Role / Timing Role: Passive bidirectional voltage limiter absorbing ±30 kV HBM surges while maintaining signal integrity. Use Value: Prevents latch-up or gate oxide damage in USB transceivers without adding series impedance or propagation delay. |
Use Scenario: Protecting GPIO pins of ARM Cortex-M microcontrollers against board-level ESD and inductive kickback. IC Role / Device Role / Timing Role: Fast-response shunt element diverting transients to ground within nanoseconds of overvoltage onset. Use Value: Maintains functional reliability in industrial control panels where operators frequently handle connectors near exposed pins. |
| Low-Voltage Sensor Reference | Power Rail Stabilization |
Use Scenario: Providing stable 6.8 V reference for analog front-end circuitry in battery-powered environmental sensors. IC Role / Device Role / Timing Role: Precision Zener element delivering regulated bias voltage with minimal load regulation error. Use Value: Enables accurate ADC conversion over −40°C to +85°C ambient without active regulation overhead. |
Use Scenario: Suppressing ripple and switching noise on 6–7 V auxiliary rails in set-top box power supplies. IC Role / Device Role / Timing Role: Low-dynamic-resistance shunt absorber stabilizing rail voltage during load transients. Use Value: Reduces need for bulk capacitance by clamping sub-microsecond spikes that bypass ceramic decoupling. |
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-C6V8 (Nexperia) | Same Zener voltage (6.8 V), but higher Pd = 300 mW and larger SOD-523 package (1.7 × 1.3 × 0.9 mm) | Preferred where higher surge energy handling is required; less suitable for ultra-thin or high-density layouts | Select when thermal margin >150 mW is needed and board space allows 20% larger footprint |
| MMSZ4687 (ON Semiconductor) | Identical Zener voltage range (6.46–7.14 V), same SC-79 package, but lower ESD rating (±25 kV HBM) and higher rd = 40 Ω | Acceptable for non-critical I/O protection; not recommended for high-reliability USB or automotive body electronics | Choose for cost-sensitive consumer products where ±25 kV ESD meets end-equipment requirements |
Compared with BZX584-C6V8 and MMSZ4687, the HZC6.8TRF-E offers the best combination of ultra-compact SC-79 packaging, industry-leading ±30 kV HBM ESD immunity, and tightest dynamic resistance (30 Ω), making it optimal for space-constrained, high-surge-environment applications like portable medical monitors and industrial handhelds.
Availability
HZC6.8TRF-E is available at Aetrix Electronics and suitable for USB interface protection, microcontroller I/O clamping, low-voltage sensor reference, and power rail stabilization requiring stable component supply across high-mix, low-volume production runs.
Supply support for HZC6.8TRF-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, designed specifically for compact, high-reliability surge absorption in consumer and industrial electronics using silicon epitaxial planar Zener technology.
FAQ
What is the Zener voltage tolerance of HZC6.8TRF-E?
The HZC6.8TRF-E has a Zener voltage range of 6.47 V to 7.14 V at IZ = 5 mA, corresponding to a ±5% tolerance around the nominal 6.8 V rating. This tight tolerance ensures consistent clamping behavior across production units and simplifies system-level voltage margining without requiring binning or calibration. The specification is guaranteed under standard test conditions (Ta = 25°C, pulse width = 40 ms).
Is HZC6.8TRF-E suitable for automotive applications?
The HZC6.8TRF-E is classified as a "Standard" quality grade device per Renesas documentation and is intended for computers, office equipment, communications gear, and industrial robots-not for automotive, medical life-support, or aerospace systems. It lacks AEC-Q200 qualification and does not meet extended temperature or reliability requirements for under-hood automotive use. For such applications, Renesas offers separate qualified Zener families.
What package type does HZC6.8TRF-E use, and what are its dimensions?
HZC6.8TRF-E uses the Ultra Small Flat Lead (UFP) package, identical to JEITA SC-79. Its dimensions are 1.70 mm (length) × 1.20 mm (width) × 0.60 mm (thickness), with a typical mass of 0.0016 g. The package features a cathode mark on terminal 1 and is optimized for reflow soldering in high-density SMT assemblies.
Does HZC6.8TRF-E have a specified temperature coefficient?
Yes - the HZC6.8TRF-E exhibits a Zener voltage temperature coefficient (γZ) of −0.02 %/°C, as shown in Figure 2 of the official datasheet. This negative coefficient means its clamping voltage decreases slightly with rising temperature, enabling predictable drift compensation in thermally managed systems. The value applies across the full operating junction temperature range (−55°C to +150°C).
Can HZC6.8TRF-E replace a standard 1N4734A in a circuit?
No - the HZC6.8TRF-E is not a drop-in replacement for the through-hole 1N4734A. While both target ~6.8 V regulation, the HZC6.8TRF-E is a surface-mount SC-79 device rated for only 150 mW (vs. 1W for 1N4734A), has different thermal characteristics, and requires reflow-compatible layout. Substitution would necessitate PCB redesign, thermal analysis, and validation of transient response under actual load conditions.
HZC6.8TRF-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:
- -
HZC6.8TRF-E FAQ
1.How can I place an order for HZC6.8TRF-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZC6.8TRF-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 HZC6.8TRF-E reliable?
The price and inventory of HZC6.8TRF-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZC6.8TRF-E is usually 5 days.
3.What payment methods are accepted for HZC6.8TRF-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZC6.8TRF-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZC6.8TRF-E?
HZC6.8TRF-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZC6.8TRF-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 HZC6.8TRF-E?
For technical support, including HZC6.8TRF-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZC6.8TRF-E requirements.
6.How does Aetrix verify that HZC6.8TRF-E is sourced from the original manufacturer or authorized distributors?
All HZC6.8TRF-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 HZC6.8TRF-E meets industry standards.
7.What is the process for return or replacement of HZC6.8TRF-E?
All HZC6.8TRF-E units undergo pre-shipment inspection (PSI). If there is an issue with HZC6.8TRF-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 HZC6.8TRF-E part is unused and in its original packaging.
Return procedure for HZC6.8TRF-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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