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Renesas HZU11B3TRF-E
- Part No.:
- HZU11B3TRF-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZU11B3TRF-E.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:33,000
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Product details
Overview
HZU11B3TRF-E from Renesas Electronics is a silicon planar Zener diode designed for precision voltage stabilization in low-power analog and reference circuits, featuring a nominal Zener voltage of 11.10–11.56 V at 5 mA, 8.0 Ω dynamic resistance, and 200 mW power dissipation in an ultra-small URP (SC-76A) surface-mount package.
For engineers reviewing the HZU11B3TRF-E datasheet, HZU11B3TRF-E pinout, HZU11B3TRF-E application, or HZU11B3TRF-E equivalent, this device serves as a compact, grade-B3-stabilized voltage reference for sensor biasing, power supply feedback, and overvoltage protection in space-constrained industrial and consumer electronics.
Technical Context
The HZU11B3TRF-E operates as a two-terminal, reverse-biased Zener diode with sharp breakdown characteristics optimized for stable DC voltage regulation under low-current conditions (IZ = 5 mA). Its planar junction construction ensures consistent thermal performance and tight voltage tolerance across ambient temperatures up to +150°C.
Designed for surface-mount assembly on standard PCBs, the device uses a glass-epoxy substrate with copper foil traces and exhibits a negative temperature coefficient of approximately –0.04 %/°C near 11 V, enabling predictable drift compensation in reference designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 11.10–11.56 V at IZ = 5 mA - defines precise stabilization point for feedback loops and reference rails |
| Dynamic Resistance (rd) | 8.0 Ω max at IZ = 5 mA - ensures minimal output voltage variation under load current changes |
| Power Dissipation (Pd) | 200 mW at Ta = 25°C - supports continuous operation in low-power regulator and clamp applications |
| Reverse Current (IR) | 2 μA max at VR = 8.0 V - guarantees low leakage in high-impedance bias networks |
| Junction Temperature (Tj) | –55 to +150°C - enables reliable use in extended-temperature industrial environments |
| Package | URP (SC-76A), 0.8 × 0.8 × 0.45 mm - provides ultra-compact footprint compatible with 0402-class reflow processes |
Pinout & Package
Ultra-small Resin Package (URP), also designated SC-76A or JEITA code PTSP0002ZA-A, measures 0.8 mm × 0.8 mm × 0.45 mm with a typical mass of 0.004 g. The package features two coplanar terminals mounted on a glass-epoxy substrate with copper foil traces.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode | Connected to higher-potential node in reverse-bias configuration; marked side of package |
| 2 | Anode | Connected to lower-potential node (typically ground or return path); unmarked terminal |
Key Features
| Feature | Design Value |
|---|---|
| Grade-B3 Zener tolerance | Tight 11.10–11.56 V range at 5 mA enables ±2% regulation accuracy without external trimming |
| Low dynamic resistance | 8.0 Ω max improves line and load regulation in feedback paths for LDOs and switching controllers |
| Surface-mount URP package | 0.8 mm × 0.8 mm footprint allows placement in dense PCB layouts where 0402 passives are used |
| Pulse-tested characterization | Electrical specs validated using 40 ms pulses - ensures reliability under transient overvoltage conditions |
Applications
| Industrial Sensor Biasing | Low-Power Voltage Reference |
|---|---|
|
Use Scenario: Providing stable excitation voltage to resistive bridge sensors (e.g., pressure or strain gauges) in factory automation modules. IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown to deliver fixed 11.3 V reference independent of supply rail fluctuations. Use Value: Enables <1% full-scale measurement error by maintaining constant sensor drive voltage despite ±10% input variation. |
Use Scenario: Generating a precision reference for ADC front-end conditioning circuits in battery-powered IoT nodes. IC Role / Device Role / Timing Role: Two-terminal shunt reference supplying regulated voltage to op-amp gain stages and comparator thresholds. Use Value: Delivers stable 11.3 V reference with <8 Ω impedance, reducing noise coupling into 12-bit SAR ADC inputs. |
| Overvoltage Clamp Protection | Power Supply Feedback Divider |
|
Use Scenario: Clamping transient surges on 12 V rail inputs in automotive body control modules during load dump events. IC Role / Device Role / Timing Role: Fast-acting shunt protector that conducts excess energy above 11.56 V to ground before downstream ICs are damaged. Use Value: Limits peak rail voltage to ≤11.6 V with <2 μA leakage below 8 V, minimizing standby power loss. |
Use Scenario: Setting output voltage in adjustable buck converter feedback network (e.g., with LM2678 or similar controller). IC Role / Device Role / Timing Role: Replacing one resistor in voltage divider to fix reference node at 11.3 V, improving loop stability vs. resistor-only dividers. Use Value: Reduces output voltage drift to ±0.5% over temperature by replacing passive divider with temperature-compensated Zener node. |
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-C11LT1G | 11 V nominal, ±5% tolerance (10.45–11.55 V), 15 Ω rd, SOT-23 package (1.3 × 1.3 mm) | Larger footprint and looser tolerance reduce accuracy in precision references but support higher surge currents | Choose when board space permits larger package and ±5% regulation suffices for non-critical clamping |
| MMSZ5240B-TP | 11 V nominal, ±5% tolerance (10.45–11.55 V), 20 Ω rd, SOD-123 package (2.7 × 1.4 mm) | Higher power rating (500 mW) and larger thermal mass suit intermittent high-energy transients | Prefer for ruggedized industrial interfaces where pulse energy exceeds 200 mW limits of HZU11B3TRF-E |
Compared with BZX84-C11LT1G and MMSZ5240B-TP, the HZU11B3TRF-E offers tighter grade-B3 tolerance (±2% vs. ±5%), lower dynamic resistance (8.0 Ω vs. ≥15 Ω), and smallest footprint (0.8 mm² vs. ≥1.7 mm²), making it optimal for miniaturized, high-accuracy voltage reference designs where thermal constraints are moderate.
Availability
HZU11B3TRF-E is available at Aetrix Electronics and suitable for industrial sensor biasing, low-power voltage reference generation, and overvoltage clamp protection requiring stable component supply and RoHS-compliant packaging.
Supply support for HZU11B3TRF-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 system-on-chip solutions for industrial, automotive, and enterprise markets.
The HZU Series belongs to Renesas' discrete Zener diode product line, engineered specifically for compact, high-stability voltage regulation in surface-mount analog signal chains and power management subsystems.
FAQ
What is the Zener voltage range of the HZU11B3TRF-E?
The HZU11B3TRF-E has a guaranteed Zener voltage range of 11.10 V to 11.56 V when tested at 5 mA DC current and 25°C ambient temperature. This grade-B3 specification reflects ±2% tolerance around the nominal 11.3 V point, verified per Renesas preliminary datasheet R07DS0423EJ1000 Rev.10.00. The HZU11B3TRF-E maintains this range across its rated junction temperature span.
Is the HZU11B3TRF-E suitable for surface-mount assembly?
Yes, the HZU11B3TRF-E uses the URP (SC-76A) package - a standardized ultra-small resin package measuring 0.8 mm × 0.8 mm × 0.45 mm - explicitly designed for reflow soldering on standard PCBs. Its coplanar terminals and JEITA code PTSP0002ZA-A ensure compatibility with automated pick-and-place and IR reflow processes used for 0402-class components.
What is the maximum power dissipation of the HZU11B3TRF-E?
The HZU11B3TRF-E has a maximum power dissipation (Pd) of 200 mW at 25°C ambient temperature, derating linearly above that point as shown in Figure 3 of the datasheet. At 70°C ambient, its usable power drops to approximately 140 mW. This rating applies under continuous DC operation and assumes adequate PCB copper area for heat spreading.
Does the HZU11B3TRF-E have a specified temperature coefficient?
Yes, the HZU11B3TRF-E exhibits a negative temperature coefficient of approximately –0.04 %/°C near its 11.3 V operating point, as shown in Figure 2 of the Renesas datasheet. This value corresponds to roughly –4.5 mV/°C and enables predictable voltage drift modeling in temperature-sensitive reference circuits - a key factor in the HZU11B3TRF-E's suitability for precision analog designs.
How is polarity marked on the HZU11B3TRF-E package?
The HZU11B3TRF-E uses a cathode-mark convention: the end of the package with the laser-marked code "11•" (per page 4 of the datasheet) identifies Pin 1 as the cathode. Pin 2 (anode) is the unmarked terminal. This marking aligns with standard diode polarity orientation and must be observed during PCB layout to ensure correct reverse-bias operation of the HZU11B3TRF-E.
HZU11B3TRF-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:
- -
HZU11B3TRF-E FAQ
1.How can I place an order for HZU11B3TRF-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZU11B3TRF-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 HZU11B3TRF-E reliable?
The price and inventory of HZU11B3TRF-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZU11B3TRF-E is usually 5 days.
3.What payment methods are accepted for HZU11B3TRF-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZU11B3TRF-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZU11B3TRF-E?
HZU11B3TRF-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZU11B3TRF-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 HZU11B3TRF-E?
For technical support, including HZU11B3TRF-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZU11B3TRF-E requirements.
6.How does Aetrix verify that HZU11B3TRF-E is sourced from the original manufacturer or authorized distributors?
All HZU11B3TRF-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 HZU11B3TRF-E meets industry standards.
7.What is the process for return or replacement of HZU11B3TRF-E?
All HZU11B3TRF-E units undergo pre-shipment inspection (PSI). If there is an issue with HZU11B3TRF-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 HZU11B3TRF-E part is unused and in its original packaging.
Return procedure for HZU11B3TRF-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HZU11B3TRF-E Tags
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