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Renesas HZU2.7B2TRF-E
- Part No.:
- HZU2.7B2TRF-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZU2.7B2TRF-E.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:78,000
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Product details
Overview
HZU2.7B2TRF-E from Renesas Electronics is a silicon planar Zener diode designed for precision voltage stabilization in low-power analog and reference circuits, with a nominal Zener voltage of 2.7 V (min 2.65 V, max 2.90 V at 5 mA), dynamic resistance of 110 Ω, and power dissipation rating of 200 mW in the ultra-small URP (SC-76A) surface-mount package.
For engineers reviewing the HZU2.7B2TRF-E datasheet, HZU2.7B2TRF-E pinout, HZU2.7B2TRF-E application, or HZU2.7B2TRF-E equivalent, this device serves as a compact, tape-and-reel–ready voltage reference for portable instrumentation, sensor biasing, and power supply feedback networks where tight voltage tolerance and thermal stability are required.
Technical Context
The HZU2.7B2TRF-E operates as a two-terminal shunt regulator, maintaining stable output voltage across its cathode-anode terminals under reverse-biased conditions. Its Zener breakdown mechanism provides predictable conduction onset at 2.65–2.90 V with 5 mA test current, and it exhibits a negative temperature coefficient typical of low-voltage Zeners below ~5 V.
Designed for surface-mount assembly, the device uses silicon planar construction with glass-passivated junctions to ensure long-term stability and low leakage. It is rated for junction temperatures up to 150°C and storage from –55°C to +150°C, supporting operation in industrial ambient environments without derating below 25°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 2.65–2.90 V at IZ = 5 mA - defines stable regulation range for low-voltage reference design |
| Dynamic Resistance (rd) | 110 Ω max at IZ = 5 mA - determines output impedance and load regulation sensitivity |
| Power Dissipation (Pd) | 200 mW at Ta = 25°C - sets maximum continuous reverse power handling before thermal shutdown |
| Reverse Current (IR) | 1.0 µA max at VR = 1.0 V - ensures minimal leakage in standby or high-impedance bias networks |
| Junction Temperature (Tj) | 150°C max - enables reliable operation in enclosed or thermally constrained PCB layouts |
| Package | URP (SC-76A), 0.8 × 0.8 × 0.45 mm - supports high-density SMT placement and automated optical inspection |
Pinout & Package
Package: Ultra Small Resin Package (URP), JEITA code SC-76A, Renesas code PTSP0002ZA-A, footprint-compatible with standard SC-76A land patterns.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode | Connected to regulated output node; polarity mark on package body aligns with this terminal |
| 2 | Anode | Connected to circuit ground or lower-potential rail; completes reverse-bias path for Zener conduction |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-small URP package | 0.8 × 0.8 mm footprint enables placement in space-constrained wearables and IoT sensor nodes |
| Tape-and-reel packaging (TRF) | 3,000 pcs/reel format supports high-speed pick-and-place assembly without manual handling |
| Grade B2 Zener tolerance | ±4.6% total voltage spread (2.65–2.90 V) allows tighter system-level calibration than standard-grade Zeners |
| Low dynamic resistance | 110 Ω max improves line regulation and reduces output voltage drift under varying load currents |
| Stable junction temperature rating | 150°C max Tj permits use in thermally demanding applications like automotive cabin modules or industrial controllers |
Applications
| Portable Sensor Biasing | Low-Power ADC Reference |
|---|---|
Use Scenario: Providing stable excitation voltage to resistive temperature detectors (RTDs) or bridge-based pressure sensors in battery-powered handheld meters. IC Role / Device Role / Timing Role: Shunt voltage reference establishing fixed bias point independent of supply variation. Use Value: Enables sub-1% measurement accuracy by minimizing sensor excitation drift over temperature and battery discharge. |
Use Scenario: Supplying precise reference voltage to 12-bit SAR ADCs in energy-harvesting wireless sensor nodes. IC Role / Device Role / Timing Role: Low-current Zener reference replacing larger IC references to reduce quiescent power. Use Value: Delivers 2.7 V reference with <110 Ω source impedance, supporting 1 LSB stability without external buffering. |
| SMPS Feedback Network | Overvoltage Clamp Protection |
Use Scenario: Setting regulated output voltage in isolated flyback converters using optocoupler feedback loops. IC Role / Device Role / Timing Role: Precision Zener in secondary-side error amplifier reference leg. Use Value: Tight 2.65–2.90 V tolerance reduces output voltage variance across production units and temperature ranges. |
Use Scenario: Protecting microcontroller I/O pins from transient overvoltage in industrial control inputs. IC Role / Device Role / Timing Role: Fast-acting shunt clamp triggered above 2.9 V threshold. Use Value: Limits clamping voltage to ≤2.90 V while sustaining <1 µA leakage below 1.0 V - avoids false triggering. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode voltage stabilization applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C2V7LT1G | 2.7 V nominal, ±5% tolerance (2.57–2.83 V), 300 mW Pd, SOT-23 package (1.3 × 1.3 mm) | Larger footprint and higher power rating; less suitable for ultra-dense layouts | Select when higher power margin or legacy SOT-23 compatibility is required |
| MMSZ4678T1G | 2.7 V nominal, ±5% tolerance (2.57–2.83 V), 500 mW Pd, SOD-123 package (2.7 × 1.4 mm) | Significantly larger size and higher thermal mass; not suitable for miniaturized designs | Choose only if board space allows and >200 mW dissipation is needed |
Compared with BZX84-C2V7LT1G and MMSZ4678T1G, the HZU2.7B2TRF-E offers the smallest footprint (0.8 × 0.8 mm), tightest voltage grade (B2), and optimized 200 mW rating for space- and power-constrained applications - making it preferred for next-generation portable and embedded systems where layout density is critical.
Availability
HZU2.7B2TRF-E is available at Aetrix Electronics and suitable for portable sensor biasing, low-power ADC reference, SMPS feedback networks, and overvoltage clamp protection requiring stable component supply and consistent Zener voltage grading.
Supply support for HZU2.7B2TRF-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 specializing in microcontrollers, analog, and power devices for industrial, automotive, and consumer applications.
The HZU Series belongs to Renesas' discrete Zener diode product line, engineered specifically for compact, high-stability voltage reference and regulation in surface-mount power management and signal conditioning circuits.
FAQ
What is the Zener voltage tolerance of HZU2.7B2TRF-E?
The HZU2.7B2TRF-E has a Zener voltage range of 2.65 V to 2.90 V at 5 mA test current, corresponding to Grade B2 tolerance (±4.6% around nominal 2.7 V). This tighter spread than standard B-grade parts enables improved system-level calibration accuracy without post-production trimming. The HZU2.7B2TRF-E datasheet specifies this range under absolute maximum ratings and electrical characteristics tables.
Is HZU2.7B2TRF-E compatible with reflow soldering processes?
Yes, the HZU2.7B2TRF-E in URP (SC-76A) package is qualified for standard lead-free reflow soldering per J-STD-020. Its glass-passivated silicon planar structure and 150°C maximum junction temperature support peak reflow profiles up to 260°C. The HZU2.7B2TRF-E's thermal performance is validated in Renesas' preliminary datasheet R07DS0423EJ1000 Rev.10.00.
What is the reverse leakage current specification for HZU2.7B2TRF-E?
The HZU2.7B2TRF-E specifies a maximum reverse current (IR) of 1.0 µA at VR = 1.0 V, measured at 25°C. This low leakage ensures minimal loading on high-impedance bias networks and preserves accuracy in precision analog front-ends. The value is confirmed in the Electrical Characteristics table on page 2 of the HZU2.7B2TRF-E datasheet.
Does HZU2.7B2TRF-E have a defined temperature coefficient?
Yes - while not explicitly tabulated for HZU2.7B2TRF-E alone, Figure 2 in the HZU Series datasheet shows the Zener voltage temperature coefficient (γZ) for 2.7 V devices is approximately –0.06 %/°C (or –1.6 mV/°C), consistent with low-voltage Zeners. This negative coefficient must be accounted for in wide-temperature-range reference designs using the HZU2.7B2TRF-E.
What does the "TRF" suffix indicate in HZU2.7B2TRF-E?
The "TRF" suffix in HZU2.7B2TRF-E denotes tape-and-reel packaging with 3,000 units per reel, using the STSP0002ZA-A carrier tape format. This configuration is optimized for automated SMT placement equipment and ensures ESD-safe handling. The marking and taping details are specified in the Ordering Information section of the HZU2.7B2TRF-E datasheet.
HZU2.7B2TRF-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:
- -
HZU2.7B2TRF-E FAQ
1.How can I place an order for HZU2.7B2TRF-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZU2.7B2TRF-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 HZU2.7B2TRF-E reliable?
The price and inventory of HZU2.7B2TRF-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZU2.7B2TRF-E is usually 5 days.
3.What payment methods are accepted for HZU2.7B2TRF-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZU2.7B2TRF-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZU2.7B2TRF-E?
HZU2.7B2TRF-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZU2.7B2TRF-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 HZU2.7B2TRF-E?
For technical support, including HZU2.7B2TRF-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZU2.7B2TRF-E requirements.
6.How does Aetrix verify that HZU2.7B2TRF-E is sourced from the original manufacturer or authorized distributors?
All HZU2.7B2TRF-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 HZU2.7B2TRF-E meets industry standards.
7.What is the process for return or replacement of HZU2.7B2TRF-E?
All HZU2.7B2TRF-E units undergo pre-shipment inspection (PSI). If there is an issue with HZU2.7B2TRF-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 HZU2.7B2TRF-E part is unused and in its original packaging.
Return procedure for HZU2.7B2TRF-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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