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Renesas HZU12B2TRF-E
- Part No.:
- HZU12B2TRF-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZU12B2TRF-E.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:15,000
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Product details
Overview
HZU12B2TRF-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 12.08–12.60 V at 5 mA, 9.0 Ω dynamic resistance, and 200 mW power dissipation in an ultra-small URP (SC-76A) surface-mount package.
For engineers reviewing the HZU12B2TRF-E datasheet, HZU12B2TRF-E pinout, HZU12B2TRF-E application, or HZU12B2TRF-E equivalent, this device serves as a compact, tape-and-reel delivered voltage reference for power supply regulation, sensor biasing, and overvoltage protection in space-constrained industrial and consumer electronics.
Technical Context
The HZU12B2TRF-E operates as a two-terminal shunt regulator with stable reverse breakdown behavior under DC or pulsed conditions (PW = 40 ms). Its Zener voltage exhibits a positive temperature coefficient of +0.04 %/°C near 12 V, enabling predictable thermal drift in reference designs.
It is rated for junction temperatures up to 150°C and storage from –55°C to +150°C, with reverse current limited to ≤2 µA at VR = 10.0 V - confirming tight leakage control suitable for battery-powered and low-quiescent-current systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 12.08–12.60 V at IZ = 5 mA - defines stable regulation point for 12 V reference circuits |
| Dynamic Resistance (rd) | 9.0 Ω max at IZ = 5 mA - ensures minimal output impedance and high regulation accuracy |
| Power Dissipation (Pd) | 200 mW at Ta = 25°C - supports operation in compact PCB layouts without forced cooling |
| Reverse Current (IR) | ≤2 µA at VR = 10.0 V - guarantees low standby leakage in always-on monitoring circuits |
| Junction Temperature (Tj) | 150°C max - enables reliable operation in thermally demanding industrial environments |
| Package | URP (SC-76A), 0.8 × 1.5 mm footprint - compatible with standard 0603 reflow profiles and automated placement |
Pinout & Package
Package: Ultra Small Resin Package (URP), JEITA code SC-76A, Renesas code PTSP0002ZA-A, dimensions 0.8 mm × 1.5 mm × 0.9 mm (max height), mass 0.004 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode | Connected to regulated output node; polarity mark on top surface identifies this terminal |
| 2 | Anode | Connected to ground or lower-potential rail; reverse-biased configuration enables Zener conduction |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-small URP package | 0.8 × 1.5 mm footprint enables high-density layout in wearables and IoT sensor nodes |
| Tape-and-reel delivery (TRF) | 3,000 pcs/reel format supports automated SMT assembly without manual handling |
| Grade B2 tolerance band | ±2.2% Zener voltage spread (12.08–12.60 V) balances cost and precision for non-critical references |
| Pulse-tested characterization | Electrical specs validated using 40 ms pulses - ensures reliability under transient load conditions |
Applications
| Power Supply Reference | Sensor Biasing Circuit |
|---|---|
|
Use Scenario: Providing stable 12 V reference for linear regulators or op-amp feedback networks in embedded power modules. IC Role / Device Role / Timing Role: Shunt voltage reference establishing precise DC bias point for downstream regulation stages. Use Value: 9.0 Ω dynamic resistance minimizes output voltage shift under varying load currents, improving overall supply accuracy. |
Use Scenario: Biasing resistive temperature detectors (RTDs) or bridge sensors in industrial process monitors. IC Role / Device Role / Timing Role: Constant-voltage source delivering known excitation potential across sensing elements. Use Value: Low 2 µA reverse leakage at 10 V ensures negligible error contribution in microamp-level sensor signal chains. |
| Overvoltage Clamp | Microcontroller Reset Circuit |
|
Use Scenario: Protecting I/O pins of MCUs or ADCs against ESD-induced transients in automotive body electronics. IC Role / Device Role / Timing Role: Fast-acting shunt clamp diverting excess energy above 12.6 V to ground. Use Value: 200 mW rating allows brief surge absorption without thermal runaway in unregulated 12 V rail environments. |
Use Scenario: Generating clean reset threshold for 3.3 V or 5 V microcontrollers powered from switched-mode supplies. IC Role / Device Role / Timing Role: Precision voltage detector feeding comparator input to trigger controlled system restart. Use Value: Tight 12.08–12.60 V range enables accurate hysteresis design when paired with external resistor dividers. |
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-C12LT1G | 12 V ±5%, 350 mW Pd, SOT-23 package (2.9 × 1.3 mm) | Larger footprint and looser tolerance; higher power handling but reduced board density | Select when higher surge capability is required and PCB area permits larger package |
| MMSZ5242BT1G | 12 V ±5%, 500 mW Pd, SOD-123 package (3.7 × 1.6 mm) | Higher power rating and wider tolerance; not suitable for ultra-compact layouts | Prefer for cost-sensitive, non-space-constrained applications requiring robustness over miniaturization |
Compared with BZX84-C12LT1G and MMSZ5242BT1G, the HZU12B2TRF-E offers superior board-area efficiency and tighter voltage tolerance in a 0.8 × 1.5 mm URP package - making it optimal for miniaturized, precision-biased systems where thermal and spatial constraints dominate.
Availability
HZU12B2TRF-E is available at Aetrix Electronics and suitable for industrial sensor modules, portable medical devices, and automotive body-control units requiring stable component supply with consistent parametric performance across production lots.
Supply support for HZU12B2TRF-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 leader specializing in microcontrollers, analog, and power solutions for industrial, automotive, and infrastructure markets.
The HZU Series is part of Renesas' discrete Zener portfolio engineered for high-precision, low-leakage voltage stabilization in surface-mount applications demanding reliability and miniaturization.
FAQ
What is the Zener voltage range of the HZU12B2TRF-E?
The HZU12B2TRF-E has a guaranteed Zener voltage range of 12.08 V to 12.60 V when tested at IZ = 5 mA and Ta = 25°C. This B2 grade specification reflects a tighter tolerance than standard ±5% Zeners, supporting improved accuracy in reference and biasing applications where the HZU12B2TRF-E is deployed.
Does the HZU12B2TRF-E support automated SMT assembly?
Yes, the HZU12B2TRF-E is supplied in TRF taping format - 3,000 pieces per reel - fully compatible with standard pick-and-place equipment. Its URP (SC-76A) package meets JEDEC standards for reflow soldering, and its 0.8 × 1.5 mm footprint aligns with fine-pitch SMT processes used for the HZU12B2TRF-E in high-volume manufacturing.
What is the maximum reverse leakage current for the HZU12B2TRF-E?
The HZU12B2TRF-E specifies a maximum reverse current (IR) of 2 µA at VR = 10.0 V and Ta = 25°C. This low leakage supports energy-efficient operation in always-on circuits and preserves signal integrity in high-impedance sensor interfaces where the HZU12B2TRF-E functions as a stable reference.
Can the HZU12B2TRF-E be used in automotive applications?
The HZU12B2TRF-E is classified as a "Standard" quality grade device per Renesas documentation and is intended for industrial, consumer, and office equipment - not automotive safety-critical systems. While its 150°C junction rating supports under-hood ambient temperatures, the HZU12B2TRF-E lacks AEC-Q101 qualification and should not be used in automotive applications without additional validation and manufacturer approval.
How does the dynamic resistance of the HZU12B2TRF-E affect regulation performance?
The HZU12B2TRF-E exhibits a maximum dynamic resistance (rd) of 9.0 Ω at IZ = 5 mA, meaning output voltage variation remains within ±45 mV for ±5 mA load current changes. This low rd directly improves line and load regulation in circuits where the HZU12B2TRF-E serves as a primary voltage reference or clamp element.
HZU12B2TRF-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:
- -
HZU12B2TRF-E FAQ
1.How can I place an order for HZU12B2TRF-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZU12B2TRF-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 HZU12B2TRF-E reliable?
The price and inventory of HZU12B2TRF-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZU12B2TRF-E is usually 5 days.
3.What payment methods are accepted for HZU12B2TRF-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZU12B2TRF-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZU12B2TRF-E?
HZU12B2TRF-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZU12B2TRF-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 HZU12B2TRF-E?
For technical support, including HZU12B2TRF-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZU12B2TRF-E requirements.
6.How does Aetrix verify that HZU12B2TRF-E is sourced from the original manufacturer or authorized distributors?
All HZU12B2TRF-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 HZU12B2TRF-E meets industry standards.
7.What is the process for return or replacement of HZU12B2TRF-E?
All HZU12B2TRF-E units undergo pre-shipment inspection (PSI). If there is an issue with HZU12B2TRF-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 HZU12B2TRF-E part is unused and in its original packaging.
Return procedure for HZU12B2TRF-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HZU12B2TRF-E Tags
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