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Renesas HZS4.7NB2TA-E
- Part No.:
- HZS4.7NB2TA-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZS4.7NB2TA-E.pdf
- Description:
- DIODE ZENER 0.4W
- Quantity:
- Payment:
- Shipping:
Inventory:10,000
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Product details
Overview
HZS4.7NB2TA-E from Renesas Electronics is a silicon planar Zener diode designed for precision voltage regulation in low-power stabilized power supplies. It delivers a nominal zener voltage of 4.7 V (min 4.59 V, max 4.77 V) at 5 mA test current, with dynamic resistance of 100 Ω and maximum power dissipation of 400 mW in the MHD package. It operates across –55°C to +175°C storage temperature and supports high-speed automatic insertion on 5 mm-pitch PCBs.
For engineers reviewing the HZS4.7NB2TA-E datasheet, HZS4.7NB2TA-E pinout, HZS4.7NB2TA-E application, or HZS4.7NB2TA-E equivalent, key selection criteria include its tight zener voltage tolerance (B2 grade), low leakage, stable temperature coefficient near zero crossing (~0 mV/°C at ~4.7 V), and suitability for space-constrained industrial and consumer power rail clamping and reference circuits.
Technical Context
This device uses a silicon planar junction structure optimized for low dynamic impedance and minimal voltage drift over temperature. Its B2-grade zener voltage specification ensures ±2.5% tolerance at 5 mA, and its 100 Ω dynamic resistance enables stable regulation under moderate load transients.
The HZS4.7NB2TA-E is rated for 400 mW power dissipation at 25°C ambient, derating linearly above 25°C per the published curve (e.g., ~250 mW at 70°C on standard PCB). Its cathode-anode pin arrangement and MHD package support automated placement and reflow-compatible assembly without thermal stress concerns up to 200°C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 4.59 V to 4.77 V at IZ = 5 mA - defines precise regulation point for 5 V rail stabilization and reference generation |
| Dynamic Resistance (rd) | 100 Ω max at IZ = 5 mA - ensures minimal output voltage variation under small-signal load changes |
| Power Dissipation (Pd) | 400 mW max at Ta = 25°C - supports continuous operation in compact PCB layouts with adequate copper area |
| Reverse Current (IR) | 5 μA max at VR = 1.0 V - guarantees low standby power loss in battery-backed or energy-sensitive circuits |
| Junction Temperature (Tj) | 200°C max - enables reliable operation in high-ambient industrial environments when properly heatsinked |
| Storage Temperature | –55°C to +175°C - compatible with automotive under-hood and industrial outdoor deployment conditions |
| Zener Voltage Tempco | ~0 mV/°C near 4.7 V (per Fig.2) - provides near-zero drift over temperature for stable reference applications |
Pinout & Package
The HZS4.7NB2TA-E is housed in the MHD package (JEITA code GRZZ0002ZC-A), a radial leaded, epoxy-molded case with 2.0 mm diameter body and 26.0 mm lead length. Cathode identified by black band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Zener reference terminal | Connected to regulated output node; polarity must be observed to avoid forward conduction |
| 2 (Anode) | Reference return path | Typically tied to system ground or lower potential rail; completes biasing current path |
Key Features
| Feature | Design Value |
|---|---|
| Low zener impedance | 100 Ω max enables tight regulation under varying load conditions without external compensation |
| B2-grade voltage tolerance | ±2.5% (4.59–4.77 V) supports accurate 5 V rail clamping without trimming resistors |
| 400 mW power rating | Sufficient for low-current references and protection circuits without forced cooling |
| 5 mm-pitch compatibility | Enables high-throughput automated insertion in cost-sensitive consumer electronics manufacturing |
| Near-zero tempco at 4.7 V | Minimizes voltage drift across –40°C to +85°C operating range in unregulated environments |
Applications
| 5 V Microcontroller Power Rail Clamping | USB Peripheral Voltage Reference |
|---|---|
Use Scenario: Protecting 5 V logic rails in MCU-based IoT nodes from transient overvoltage during hot-plug or ESD events. IC Role / Device Role / Timing Role: Shunt regulator clamping excess voltage to prevent damage to sensitive I/O pins and internal LDOs. Use Value: Delivers fast response with 100 Ω dynamic impedance and withstands repeated 400 mW surges without parameter shift. |
Use Scenario: Providing stable 4.7 V reference for USB data line termination and VBUS monitoring circuitry. IC Role / Device Role / Timing Role: Precision voltage reference source for comparator thresholds and ADC calibration in USB-C detection ICs. Use Value: B2-grade tolerance and near-zero tempco ensure <±10 mV drift across full commercial temperature range. |
| Industrial Sensor Signal Conditioning | Consumer Audio DC Bias Generation |
Use Scenario: Generating stable bias voltage for op-amp input stages in 4–20 mA transmitter modules. IC Role / Device Role / Timing Role: Low-noise, low-drift DC reference for analog front-end gain-setting and offset nulling networks. Use Value: 5 μA reverse leakage prevents loading of high-impedance sensor bridges and maintains measurement accuracy. |
Use Scenario: Establishing DC bias point for Class-AB headphone amplifier inputs in portable media players. IC Role / Device Role / Timing Role: Passive voltage reference enabling rail-to-rail signal swing without coupling capacitors. Use Value: 400 mW rating allows direct use with 10 kΩ series resistor for low-noise, low-cost bias generation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4733A (ON Semiconductor) | Same 5.1 V nominal rating but wider tolerance (±5%), higher rd (17 Ω), 1 W rating | Higher power handling but looser regulation; suited for general-purpose clamping, not precision reference | Choose only if higher surge capability is required and voltage accuracy is secondary |
| BZX55-C4V7 (Vishay) | 4.7 V nominal, ±5% tolerance, 100 Ω rd, 500 mW rating, DO-35 package | Larger DO-35 footprint; identical regulation performance but less suitable for high-density SMT-incompatible layouts | Select when legacy through-hole assembly or higher thermal mass is preferred over MHD's 5 mm-pitch automation |
Compared with 1N4733A and BZX55-C4V7, the HZS4.7NB2TA-E offers tighter B2-grade voltage control and MHD packaging optimized for modern automated insertion-making it preferable for space-constrained, high-volume consumer and industrial power management where precision and manufacturability are jointly critical.
Availability
HZS4.7NB2TA-E is available at Aetrix Electronics and suitable for industrial sensor interfaces, USB peripheral power management, and consumer audio bias generation requiring stable component supply, consistent parametric performance, and long-term production continuity.
Supply support for HZS4.7NB2TA-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 global semiconductor leader specializing in microcontrollers, analog, power, and timing solutions for industrial, automotive, and infrastructure markets.
The HZS-N Series was developed as a family of precision silicon planar Zener diodes targeting cost-effective, high-reliability voltage stabilization in consumer, office, and industrial equipment-emphasizing tight tolerance, low leakage, and automated assembly compatibility.
FAQ
What is the exact zener voltage range for HZS4.7NB2TA-E at 5 mA?
The HZS4.7NB2TA-E has a guaranteed zener voltage range of 4.59 V to 4.77 V when tested at IZ = 5 mA and Ta = 25°C. This B2-grade specification reflects ±2.5% tolerance around the nominal 4.7 V rating, confirmed in the Renesas REJ03G0185-0300 datasheet, page 2. The HZS4.7NB2TA-E is not characterized for tighter tolerances outside this range.
Does HZS4.7NB2TA-E support surface-mount assembly?
No, the HZS4.7NB2TA-E uses the MHD radial-leaded package (JEITA GRZZ0002ZC-A), designed specifically for through-hole mounting and high-speed automatic insertion on 5 mm-pitch PCBs. It is not a surface-mount device and lacks solder pads or gull-wing leads. The HZS4.7NB2TA-E requires axial or radial hole placement and wave or selective soldering-not reflow.
What is the maximum allowable junction temperature for HZS4.7NB2TA-E?
The absolute maximum junction temperature for HZS4.7NB2TA-E is 200°C, as specified in the Absolute Maximum Ratings table (page 2 of REJ03G0185-0300). Operation beyond this limit risks permanent degradation of the silicon junction. Derating curves in Figure 3 confirm usable power dissipation down to ~100 mW at 125°C ambient when mounted on standard 100 × 180 × 1.6 mm phenolic PCB.
How does the temperature coefficient of HZS4.7NB2TA-E compare to other 4.7 V Zeners?
Per Figure 2 in the datasheet, the HZS4.7NB2TA-E exhibits a zener voltage temperature coefficient near 0 mV/°C at 4.7 V-placing it at the zero-tempco crossover point typical of mid-voltage Zeners. This yields significantly lower drift than alternatives like 1N4733A (which shows +2.5 mV/°C), making the HZS4.7NB2TA-E especially suitable for stable reference designs across –40°C to +85°C.
Is HZS4.7NB2TA-E compliant with RoHS and lead-free soldering standards?
Yes, HZS4.7NB2TA-E meets EU RoHS Directive requirements for restricted substances, as confirmed by Renesas' environmental compliance documentation. Its MHD package is compatible with lead-free reflow profiles up to 260°C peak temperature, provided the 400 mW power limit and 200°C junction temperature are respected. Full material declarations are available via Renesas' official inquiry portal.
HZS4.7NB2TA-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:
- -
HZS4.7NB2TA-E FAQ
1.How can I place an order for HZS4.7NB2TA-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZS4.7NB2TA-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 HZS4.7NB2TA-E reliable?
The price and inventory of HZS4.7NB2TA-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZS4.7NB2TA-E is usually 5 days.
3.What payment methods are accepted for HZS4.7NB2TA-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZS4.7NB2TA-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZS4.7NB2TA-E?
HZS4.7NB2TA-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZS4.7NB2TA-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 HZS4.7NB2TA-E?
For technical support, including HZS4.7NB2TA-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZS4.7NB2TA-E requirements.
6.How does Aetrix verify that HZS4.7NB2TA-E is sourced from the original manufacturer or authorized distributors?
All HZS4.7NB2TA-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 HZS4.7NB2TA-E meets industry standards.
7.What is the process for return or replacement of HZS4.7NB2TA-E?
All HZS4.7NB2TA-E units undergo pre-shipment inspection (PSI). If there is an issue with HZS4.7NB2TA-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 HZS4.7NB2TA-E part is unused and in its original packaging.
Return procedure for HZS4.7NB2TA-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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