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Renesas HZU4.7B2JTRF
- Part No.:
- HZU4.7B2JTRF
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZU4.7B2JTRF.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:42,000
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Product details
Overview
HZU4.7B2JTRF from Renesas Electronics is a silicon planar Zener diode in ultra-small URP (SC-76A) surface-mount package, designed for precision voltage stabilization in low-power circuits. It delivers a nominal Zener voltage of 4.7 V (min 4.98 V, max 5.20 V at IZ = 5 mA), with dynamic resistance of 130 Ω and maximum reverse current of 10 µA at VR = 1.0 V - used in power supply reference rails and overvoltage protection for microcontroller I/O.
For engineers reviewing the HZU4.7B2JTRF datasheet, HZU4.7B2JTRF pinout, HZU4.7B2JTRF application, or HZU4.7B2JTRF equivalent, key selection criteria include its ±5% Zener voltage tolerance (Grade B2), 200 mW power dissipation limit, 150°C junction temperature rating, and compatibility with automated SMT assembly due to TRF taping (3,000 pcs/reel).
Technical Context
This Zener diode operates in reverse-biased breakdown mode to maintain stable voltage under varying load and input conditions. Its planar construction ensures consistent breakdown characteristics and low leakage, with specified test conditions of IZ = 5 mA and pulse width = 40 ms per Fig. 3.
The device exhibits a negative temperature coefficient near 4.7 V (≈ –0.04 %/°C per Fig. 2), making it suitable for temperature-compensated references when paired with positive-TC components. It is rated for storage between –55°C and +150°C and requires no external biasing circuitry beyond standard series current-limiting resistor.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 4.98 V to 5.20 V at IZ = 5 mA - defines stable regulation window for low-voltage reference design. |
| Power Dissipation (Pd) | 200 mW at Ta = 25°C - sets maximum continuous power handling before thermal derating applies. |
| Dynamic Resistance (rd) | 130 Ω at IZ = 5 mA - determines output impedance and regulation sensitivity to current variation. |
| Reverse Current (IR) | ≤10 µA at VR = 1.0 V - confirms low leakage for standby-mode voltage monitoring. |
| Junction Temperature (Tj) | 150°C maximum - enables operation in compact, thermally constrained PCB layouts without forced cooling. |
| Package | URP (SC-76A), 0.8 mm × 0.8 mm footprint - supports high-density routing and reflow-compatible SMT placement. |
Pinout & Package
Ultra-small Resin Package (URP / SC-76A) with 2-terminal surface-mount configuration: 0.8 mm × 0.8 mm body, 0.45 mm nominal height, and 0.004 g typical mass. Cathode marked by laser dot on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode | Connected to regulated output node; polarity must be observed to ensure reverse-bias operation. |
| 2 | Anode | Connected to ground or lower-potential rail; completes current path during Zener conduction. |
Key Features
| Feature | Design Value |
|---|---|
| Taped delivery (TRF) | 3,000 pcs/reel - enables direct integration into high-speed pick-and-place SMT lines without manual handling. |
| Ultra-small URP package | 0.8 mm × 0.8 mm footprint - reduces board area by >50% vs. SOD-323, critical for space-constrained wearables and IoT sensors. |
| Grade B2 voltage tolerance | ±4.3% (4.98–5.20 V) - tighter than standard B-grade parts, improving reference accuracy without trimming. |
| Pulse-tested characterization | Verified at 40 ms pulse width - ensures stable parameters under transient load conditions common in digital power sequencing. |
Applications
| Microcontroller Power Monitoring | USB Port Overvoltage Clamp |
|---|---|
Use Scenario: Detects 5 V rail deviation in battery-powered MCU systems using ADC input scaled via resistive divider. IC Role / Device Role / Timing Role: Precision voltage reference for analog-to-digital conversion of supply voltage. Use Value: Enables accurate brown-out detection within ±2% error margin using only passive scaling and internal ADC. |
Use Scenario: Limits USB VBUS voltage spikes above 5.2 V to protect downstream USB transceivers and PHYs. IC Role / Device Role / Timing Role: Fast-acting shunt clamp activated during ESD or hot-plug transients. Use Value: Clamps overshoot to ≤5.2 V without latch-up, preserving signal integrity and meeting USB 2.0 electrical compliance. |
| Low-Power Sensor Biasing | Industrial Analog Input Protection |
Use Scenario: Provides stable 4.7 V bias for MEMS pressure sensor excitation in wireless environmental nodes. IC Role / Device Role / Timing Role: Low-current Zener reference replacing higher-quiescent LDOs in sleep-mode operation. Use Value: Draws <1 µA standby current while maintaining ±0.1% reference stability across –40°C to +85°C ambient. |
Use Scenario: Guards 4–20 mA loop receiver inputs against field-wiring faults and induced surges. IC Role / Device Role / Timing Role: Primary shunt protection stage upstream of precision op-amp front-end. Use Value: Absorbs up to 200 mW surge energy without parameter shift, ensuring long-term calibration retention. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C4V7LT1G | Same nominal VZ (4.7 V), but ±5% tolerance (Grade C), 350 mW Pd, SOT-23 package (1.3 mm × 1.3 mm). | Larger footprint and higher power rating suit higher-current clamping; less suited for ultra-dense layouts. | Select when higher surge energy absorption is required and board space permits larger package. |
| MMSZ4704T1G | VZ = 4.7 V (min 4.47 V, max 4.94 V), ±5%, 500 mW Pd, SOD-123 package (1.8 mm × 1.4 mm). | Wider VZ spread and higher Pd support industrial-grade transient suppression but reduce reference precision. | Choose for cost-sensitive designs where ±5% regulation tolerance is acceptable and thermal margin is critical. |
Compared with BZX84-C4V7LT1G and MMSZ4704T1G, the HZU4.7B2JTRF offers tighter Grade B2 voltage tolerance (±4.3%), smallest URP footprint (0.8 mm × 0.8 mm), and optimized low-leakage performance - making it preferred for precision reference and space-constrained portable electronics.
Availability
HZU4.7B2JTRF is available at Aetrix Electronics and suitable for microcontroller power monitoring, USB port overvoltage clamp, and low-power sensor biasing requiring stable component supply, full traceability, and RoHS-compliant manufacturing.
Supply support for HZU4.7B2JTRF 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 and power devices, and advanced SoCs for industrial, automotive, and consumer applications.
The HZU Series belongs to Renesas' silicon planar Zener diode product line, engineered specifically for high-accuracy voltage stabilization in miniaturized, surface-mount power management and protection circuits.
FAQ
What is the Zener voltage tolerance for HZU4.7B2JTRF?
The HZU4.7B2JTRF has a Zener voltage range of 4.98 V to 5.20 V at IZ = 5 mA, corresponding to Grade B2 tolerance of ±4.3%. This tighter specification than standard B-grade parts improves reference accuracy in precision analog circuits without requiring post-assembly calibration.
Can HZU4.7B2JTRF be used in place of a 5 V linear regulator?
The HZU4.7B2JTRF is not a replacement for a 5 V linear regulator - it is a two-terminal shunt regulator requiring an external current-limiting resistor. It provides stable voltage reference or overvoltage clamping, but lacks current-sourcing capability, thermal shutdown, or line/load regulation features found in integrated LDOs like the HZU4.7B2JTRF-based reference design.
What is the maximum reverse current specification for HZU4.7B2JTRF at 1.0 V?
The HZU4.7B2JTRF specifies a maximum reverse current (IR) of 10 µA at VR = 1.0 V and Ta = 25°C. This low leakage supports ultra-low-power applications such as battery-backed voltage monitoring and always-on sensor biasing where standby current must remain below 1 µA.
Is HZU4.7B2JTRF compatible with lead-free reflow soldering profiles?
Yes, the HZU4.7B2JTRF's URP package and epoxy resin construction are qualified for standard lead-free reflow soldering per J-STD-020, with peak temperature up to 260°C. Its 0.45 mm nominal height and thermal mass allow uniform heating without tombstoning or delamination in high-volume SMT assembly.
Does HZU4.7B2JTRF have a specified temperature coefficient?
Yes - the HZU4.7B2JTRF exhibits a negative temperature coefficient near –0.04 %/°C (≈ –2 mV/°C) at 4.7 V, as shown in Fig. 2 of the R07DS0423EJ1000 datasheet. This characteristic enables predictable drift compensation in mixed-TC reference designs and must be accounted for in wide-temperature-range applications.
HZU4.7B2JTRF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Obsolete
- 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:
- -
HZU4.7B2JTRF FAQ
1.How can I place an order for HZU4.7B2JTRF through Aetrix?
Please submit a Request for Quotation (RFQ) for HZU4.7B2JTRF 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 HZU4.7B2JTRF reliable?
The price and inventory of HZU4.7B2JTRF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZU4.7B2JTRF is usually 5 days.
3.What payment methods are accepted for HZU4.7B2JTRF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZU4.7B2JTRF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZU4.7B2JTRF?
HZU4.7B2JTRF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZU4.7B2JTRF 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 HZU4.7B2JTRF?
For technical support, including HZU4.7B2JTRF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZU4.7B2JTRF requirements.
6.How does Aetrix verify that HZU4.7B2JTRF is sourced from the original manufacturer or authorized distributors?
All HZU4.7B2JTRF 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 HZU4.7B2JTRF meets industry standards.
7.What is the process for return or replacement of HZU4.7B2JTRF?
All HZU4.7B2JTRF units undergo pre-shipment inspection (PSI). If there is an issue with HZU4.7B2JTRF, 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 HZU4.7B2JTRF part is unused and in its original packaging.
Return procedure for HZU4.7B2JTRF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HZU4.7B2JTRF Tags
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BZT52C5V6T-7
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MMSZ5231B-7-F
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MMSZ5245BS-7-F
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BZT52C15S-7-F
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MM5Z5V1ST1G
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