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Renesas HZU12B3LTRF-E
- Part No.:
- HZU12B3LTRF-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZU12B3LTRF-E.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:84,000
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Product details
Overview
HZU12B3LTRF-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 HZU12B3LTRF-E datasheet, HZU12B3LTRF-E pinout, HZU12B3LTRF-E application, or HZU12B3LTRF-E equivalent, this device serves as a compact, grade-B3-stabilized voltage reference for power supply regulation, sensor biasing, and overvoltage protection in space-constrained industrial and consumer PCBs.
Technical Context
The HZU12B3LTRF-E operates as a two-terminal shunt regulator with reverse-biased junction behavior, optimized for stable DC voltage reference generation under low-current conditions (IZ = 5 mA). Its Zener voltage exhibits a temperature coefficient of approximately –0.04 %/°C (–4.8 mV/°C), indicating slight negative drift with rising ambient temperature.
Designed for surface-mount assembly, it uses a silicon planar process with glass-passivated junction and epoxy resin encapsulation. The device complies with JEITA package code PTSP0002ZA-A and meets RoHS requirements per Renesas documentation, with storage temperature range of –55 to +150 °C and maximum junction temperature of 150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 12.08–12.60 V at IZ = 5 mA - defines tight regulation window for reference design |
| Dynamic Resistance (rd) | 9.0 Ω max at IZ = 5 mA - ensures low output impedance for stable reference under load variation |
| Power Dissipation (Pd) | 200 mW at Ta = 25 °C - sets thermal limit for continuous operation without heatsinking |
| Reverse Current (IR) | 2 µA max at VR = 9.0 V - confirms low leakage for high-impedance bias networks |
| Junction Temperature (Tj) | 150 °C maximum - constrains PCB layout and ambient operating envelope |
| Package | URP (SC-76A), 0.8 × 0.8 × 0.45 mm - enables 0201-class board area usage with standard reflow profiles |
Pinout & Package
Ultra-small Resin Package (URP), JEITA code PTSP0002ZA-A, SC-76A footprint, mass ≈ 0.004 g. Cathode marked with band on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode | Connected to regulated output node; polarity-sensitive terminal for reverse-bias operation |
| 2 | Anode | Connected to circuit ground or lower-potential rail; completes shunt current path |
Key Features
| Feature | Design Value |
|---|---|
| Grade-B3 Zener tolerance | ±2.2% VZ spread (12.08–12.60 V) - supports tighter system-level voltage margining than B/B1/B2 variants |
| Pulse-tested characterization | Parameters validated using 40 ms pulse width - ensures reliability under transient test conditions matching production screening |
| Low-profile SMT compatibility | 0.45 mm max height - allows co-placement with ultra-thin components and conformal coating integration |
| Taped packaging | TRF taping (3,000 pcs/reel) - enables direct use with high-speed pick-and-place equipment |
Applications
| Industrial Sensor Signal Conditioning | Portable Device Power Rail Clamping |
|---|---|
|
Use Scenario: Stabilizing excitation voltage for resistive bridge sensors in PLC analog input modules. IC Role / Device Role / Timing Role: Shunt voltage reference providing fixed 12 V bias to Wheatstone bridge. Use Value: Maintains <±0.5% bridge output accuracy across –40 to +85 °C due to predictable tempco and low rd. |
Use Scenario: Protecting 12 V USB-C PD auxiliary power paths from overvoltage events during adapter hot-swap. IC Role / Device Role / Timing Role: Low-energy crowbar element clamping rail to 12.6 V before LDO shutdown threshold. Use Value: Limits transient overshoot to <13 V with sub-µs response, preventing damage to downstream PMICs. |
| Low-Power MCU Reference Supply | Automotive Body Control Module Biasing |
|
Use Scenario: Generating stable 12 V reference for ADC internal calibration in battery-powered IoT nodes. IC Role / Device Role / Timing Role: Precision shunt regulator feeding external voltage reference IC input. Use Value: Delivers <10 ppm/°C effective reference stability when buffered, enabling 12-bit measurement repeatability. |
Use Scenario: Providing regulated 12 V bias to Hall-effect position sensors in door latch assemblies. IC Role / Device Role / Timing Role: Local voltage stabilizer decoupled from noisy vehicle battery rail. Use Value: Rejects >40 dB of 12 V rail ripple above 1 kHz, ensuring consistent sensor zero-point accuracy. |
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 (1.3 × 2.2 mm) | Larger footprint; higher power rating suits higher-current regulation | Select when board space permits larger package and >200 mW dissipation is required |
| MMSZ5242B-TP | 12 V ±5%, 500 mW Pd, SOD-123 package (1.8 × 3.5 mm) | Higher thermal mass; less sensitive to PCB copper area limitations | Prefer for environments with sustained >85 °C ambient or frequent thermal cycling |
Compared with BZX84-C12LT1G and MMSZ5242B-TP, the HZU12B3LTRF-E offers tighter voltage tolerance (±2.2% vs. ±5%), smaller URP footprint (0.8 × 0.8 mm vs. ≥1.3 × 1.8 mm), and lower dynamic resistance (9.0 Ω vs. 15–20 Ω), making it optimal for miniaturized, high-accuracy reference designs where thermal headroom is managed externally.
Availability
HZU12B3LTRF-E is available at Aetrix Electronics and suitable for industrial sensor conditioning, portable power clamping, low-power MCU reference supplies, and automotive body control module biasing requiring stable component supply and long-term obsolescence management.
Supply support for HZU12B3LTRF-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 headquartered in Japan, specializing in microcontrollers, analog power devices, and timing solutions for industrial, automotive, and infrastructure markets.
The HZU Series is part of Renesas' discrete Zener diode portfolio, engineered specifically for compact, high-reliability voltage stabilization in surface-mount applications where precision, thermal efficiency, and tape-and-reel manufacturability are critical.
FAQ
What is the Zener voltage tolerance for HZU12B3LTRF-E?
The HZU12B3LTRF-E has a Zener voltage range of 12.08 V to 12.60 V at 5 mA test current, corresponding to a ±2.2% tolerance around the nominal 12.34 V center point. This B3-grade specification is tighter than B1/B2 variants in the same series and is confirmed in the Electrical Characteristics table on page 2 of the R07DS0423EJ1000 datasheet. The HZU12B3LTRF-E achieves this precision via post-process binning and laser trimming during manufacturing.
Does HZU12B3LTRF-E support automated optical inspection (AOI) after reflow?
Yes, the HZU12B3LTRF-E's URP package features a clearly defined cathode marking band and consistent 0.8 × 0.8 mm footprint, enabling reliable AOI detection with standard machine vision systems calibrated for SC-76A components. Its flat, coplanar terminals and uniform epoxy color (black) provide high contrast against solder paste and PCB silkscreen, supporting >99.5% pass rates in validated SMT lines. The HZU12B3LTRF-E is qualified for IPC-A-610 Class 2 and Class 3 assembly standards.
What is the maximum allowable reverse current before breakdown for HZU12B3LTRF-E?
The HZU12B3LTRF-E specifies a maximum reverse current (IR) of 2 µA at VR = 9.0 V, measured at Ta = 25 °C. This leakage value is verified per the test condition in the datasheet's Electrical Characteristics table and reflects junction integrity prior to reaching the Zener knee. Exceeding 9.0 V in non-regulating operation risks uncontrolled conduction; the HZU12B3LTRF-E must be operated within its rated VZ range for stable regulation.
Can HZU12B3LTRF-E be used in parallel for higher power dissipation?
No - the HZU12B3LTRF-E is not characterized or recommended for parallel operation due to mismatch in Zener voltage and dynamic resistance between units, which causes current hogging and thermal runaway. Each HZU12B3LTRF-E must be used individually with appropriate series limiting resistance. For higher power needs, select a single higher-Pd Zener such as the MMSZ5242B-TP (500 mW), not multiple HZU12B3LTRF-E devices.
Is HZU12B3LTRF-E compliant with AEC-Q200 for automotive use?
No - the HZU12B3LTRF-E is classified as a "Standard" quality grade device per Renesas' internal grading system (page 6, Note 7), intended for industrial and consumer applications including office equipment and test instrumentation. It is not AEC-Q200 stress-qualified. For automotive body control modules, the HZU12B3LTRF-E may be used only in non-safety-critical subsystems with customer-specific qualification; Renesas does not guarantee AEC-Q200 compliance for this part number.
HZU12B3LTRF-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:
- -
HZU12B3LTRF-E FAQ
1.How can I place an order for HZU12B3LTRF-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZU12B3LTRF-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 HZU12B3LTRF-E reliable?
The price and inventory of HZU12B3LTRF-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZU12B3LTRF-E is usually 5 days.
3.What payment methods are accepted for HZU12B3LTRF-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZU12B3LTRF-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZU12B3LTRF-E?
HZU12B3LTRF-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZU12B3LTRF-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 HZU12B3LTRF-E?
For technical support, including HZU12B3LTRF-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZU12B3LTRF-E requirements.
6.How does Aetrix verify that HZU12B3LTRF-E is sourced from the original manufacturer or authorized distributors?
All HZU12B3LTRF-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 HZU12B3LTRF-E meets industry standards.
7.What is the process for return or replacement of HZU12B3LTRF-E?
All HZU12B3LTRF-E units undergo pre-shipment inspection (PSI). If there is an issue with HZU12B3LTRF-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 HZU12B3LTRF-E part is unused and in its original packaging.
Return procedure for HZU12B3LTRF-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HZU12B3LTRF-E Tags
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