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Renesas HZS4.7NB1TD-E
- Part No.:
- HZS4.7NB1TD-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZS4.7NB1TD-E.pdf
- Description:
- DIODE ZENER 0.4W
- Quantity:
- Payment:
- Shipping:
Inventory:10,000
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Product details
Overview
HZS4.7NB1TD-E from Renesas Electronics is a silicon planar Zener diode designed for precision voltage regulation in low-power stabilized power supplies, with a nominal zener voltage of 4.7 V (min 4.47 V, max 4.65 V), dynamic resistance of 100 Ω at 5 mA, and maximum power dissipation of 400 mW in the MHD package.
For engineers reviewing the HZS4.7NB1TD-E datasheet, HZS4.7NB1TD-E pinout, HZS4.7NB1TD-E application, or HZS4.7NB1TD-E equivalent, this device serves as a compact, low-leakage voltage reference in analog sensing circuits, microcontroller reset supervision, and low-current bias networks where thermal stability and tight voltage tolerance are critical.
Technical Context
The HZS4.7NB1TD-E operates as a two-terminal shunt regulator, maintaining stable output voltage across its cathode-anode terminals under reverse-biased conditions. Its zener voltage is specified at 5 mA test current, with reverse leakage limited to ≤5 μA at 1.0 V and dynamic impedance measured at 100 Ω - enabling predictable regulation in low-noise feedback paths.
Designed for surface-mount compatibility with 5 mm-pitch high-speed automatic insertion, the device features a temperature coefficient of approximately –0.05 %/°C near 4.7 V (per Fig.2), and junction temperature rating up to 200°C - supporting operation in thermally constrained industrial control modules and automotive body electronics.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 4.47 V min to 4.65 V max at IZ = 5 mA - defines precise regulation window for 5 V rail clamping or reference generation. |
| Dynamic Resistance (rd) | 100 Ω max at IZ = 5 mA - ensures minimal output voltage variation under load transients in feedback loops. |
| Reverse Leakage Current (IR) | ≤5 μA max at VR = 1.0 V - enables ultra-low standby power in battery-backed monitoring circuits. |
| Power Dissipation (Pd) | 400 mW max at Ta = 25°C - supports continuous operation in compact PCB layouts without forced cooling. |
| Junction Temperature (Tj) | –55°C to +200°C - allows deployment in under-hood automotive modules and industrial motor drive control boards. |
| Package Type | MHD (JEITA GRZZ0002ZC-A) - standardized 2-pin axial leaded package with 2.0 mm diameter and 26 mm length for automated insertion. |
Pinout & Package
The HZS4.7NB1TD-E uses the MHD package: a silicon planar diode in an axial-lead, epoxy-coated cylindrical form factor with cathode band marking. Dimensions: φD = 2.0 mm (nom), L = 26.0 mm (min), mass ≈ 0.084 g. Leads are tinned copper alloy, suitable for wave soldering and reflow-compatible pre-tinning.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | High-side reference node | Connected to regulated output or voltage divider top node; carries reverse current during regulation. |
| 2 (Anode) | Low-side return path | Typically tied to ground or system common; completes current path for zener conduction. |
Key Features
| Feature | Design Value |
|---|---|
| Low zener impedance | 100 Ω max ensures <1% output deviation under ±1 mA load shifts in reference buffers. |
| Tight voltage tolerance | B1 grade (±2.5% typical) enables direct use in 5 V logic supervisor circuits without trimming resistors. |
| High thermal endurance | 200°C junction rating permits placement near heat-generating components like MOSFET drivers or LDOs. |
| Automated assembly support | 5 mm pitch and standardized MHD footprint allow integration into high-throughput SMT+THT hybrid production lines. |
Applications
| Microcontroller Reset Circuit | ADC Reference Stabilization |
|---|---|
Use Scenario: Generating a clean, temperature-stable 4.7 V threshold to trigger reset on brown-out conditions in 5 V MCU systems. IC Role / Device Role / Timing Role: Shunt voltage reference providing hysteresis-free trip point for reset IC inputs or internal comparator thresholds. Use Value: Eliminates need for external voltage dividers while maintaining ±2.5% accuracy over –40°C to +125°C ambient. |
Use Scenario: Supplying a stable reference voltage to 10-bit SAR ADCs in sensor signal conditioning front-ends. IC Role / Device Role / Timing Role: Low-noise, low-drift voltage source replacing higher-cost bandgap references in cost-sensitive industrial sensors. Use Value: Achieves <0.5 LSB error contribution at 4.7 V due to 100 Ω rd and <5 μA leakage under light loading. |
| LED Current Bias Network | Overvoltage Clamp for I/O Protection |
Use Scenario: Setting constant current through indicator LEDs in panel-mounted HMIs using series resistor + zener topology. IC Role / Device Role / Timing Role: Voltage clamp defining forward drop across current-setting resistor, independent of supply ripple. Use Value: Maintains LED brightness within ±3% over 4.5–5.5 V input range, leveraging tight VZ tolerance and low rd. |
Use Scenario: Protecting 5 V logic inputs from transient surges exceeding 5.5 V in industrial PLC digital I/O modules. IC Role / Device Role / Timing Role: Fast-acting shunt limiter diverting excess energy to ground before downstream CMOS gate breakdown. Use Value: Responds within nanoseconds to ESD events (IEC 61000-4-2 Level 3) with no latch-up risk due to low Pd and robust junction design. |
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 nominal 5.1 V rating but wider tolerance (±5%), higher rd (17 Ω), and 1 W Pd - requires derating for 400 mW designs. | Targeted at general-purpose power supply regulation, not optimized for low-leakage analog reference use. | Select only if higher power handling is needed and tighter VZ tolerance is not required. |
| BZX55-C4V7 (Vishay) | 4.7 V nominal, ±5% tolerance, 100 Ω rd, but rated for 500 mW and uses DO-35 package - different mechanical fit and thermal profile. | Common in legacy consumer electronics; lacks Renesas' MHD insertion compatibility and automotive-grade qualification. | Choose when DO-35 footprint is fixed and higher Pd margin is acceptable; verify board-level thermal performance. |
Compared with HZS4.7NB1TD-E, the 1N4733A offers higher power but looser regulation, while the BZX55-C4V7 matches voltage but sacrifices MHD automation compatibility and Renesas' extended temperature reliability - making HZS4.7NB1TD-E optimal for new designs prioritizing precision, manufacturability, and industrial thermal resilience.
Availability
HZS4.7NB1TD-E is available at Aetrix Electronics and suitable for stabilized power supply design, microcontroller reset supervision, and analog sensor reference applications requiring stable component supply, long-term lifecycle continuity, and RoHS-compliant sourcing.
Supply support for HZS4.7NB1TD-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 devices, and trusted embedded solutions for industrial, automotive, and infrastructure markets.
The HZS-N Series was developed specifically for high-reliability voltage stabilization in space-constrained, thermally demanding applications - emphasizing low leakage, tight zener tolerance, and automated manufacturing readiness.
FAQ
What is the exact zener voltage range for HZS4.7NB1TD-E at 5 mA test current?
The HZS4.7NB1TD-E has a guaranteed zener voltage range of 4.47 V minimum to 4.65 V maximum when tested at IZ = 5 mA and Ta = 25°C, per the B1 grade specification in the Renesas REJ03G0185-0300 datasheet. This 180 mV window reflects ±2.5% tolerance around the nominal 4.7 V rating, ensuring predictable behavior in precision reference circuits without post-assembly calibration.
Does HZS4.7NB1TD-E support automotive temperature requirements?
Yes, HZS4.7NB1TD-E is rated for junction temperatures from –55°C to +200°C and meets Renesas' "Standard" quality grade - qualified for use in automotive body electronics, infotainment power rails, and non-safety-critical control modules. While not explicitly certified to AEC-Q101, its thermal and electrical specifications align with under-dash and engine-compartment-adjacent applications where ambient temperatures reach 125°C.
Can HZS4.7NB1TD-E be used as a replacement for 1N4733A in existing designs?
No - HZS4.7NB1TD-E is a 4.7 V device, whereas the 1N4733A is a 5.1 V Zener. Direct substitution would cause incorrect regulation thresholds. For true functional equivalence, compare against 4.7 V alternatives like BZX55-C4V7 or MMBZ5225B. Always verify layout compatibility, thermal dissipation, and dynamic impedance impact on loop stability before interchanging HZS4.7NB1TD-E with other Zeners.
What is the maximum reverse leakage current for HZS4.7NB1TD-E at 1.0 V?
The maximum reverse leakage current for HZS4.7NB1TD-E is 5 μA at VR = 1.0 V and Ta = 25°C, as specified in the Electrical Characteristics table. This ultra-low leakage enables use in battery-powered systems where standby current must remain below 10 μA, such as remote sensor nodes or always-on wake-up circuits relying on HZS4.7NB1TD-E as a voltage monitor.
Is the MHD package of HZS4.7NB1TD-E compatible with standard 5 mm pitch automated insertion equipment?
Yes - the MHD package used by HZS4.7NB1TD-E is explicitly designed for 5 mm-pitch high-speed automatic insertion, as confirmed in the "Features" section of the Renesas datasheet. Its standardized lead spacing, cylindrical geometry, and 0.4 mm lead diameter ensure reliable feeding, orientation, and placement in legacy and modern through-hole assembly lines without adapter tooling.
HZS4.7NB1TD-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:
- -
HZS4.7NB1TD-E FAQ
1.How can I place an order for HZS4.7NB1TD-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZS4.7NB1TD-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 HZS4.7NB1TD-E reliable?
The price and inventory of HZS4.7NB1TD-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZS4.7NB1TD-E is usually 5 days.
3.What payment methods are accepted for HZS4.7NB1TD-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZS4.7NB1TD-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZS4.7NB1TD-E?
HZS4.7NB1TD-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZS4.7NB1TD-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 HZS4.7NB1TD-E?
For technical support, including HZS4.7NB1TD-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZS4.7NB1TD-E requirements.
6.How does Aetrix verify that HZS4.7NB1TD-E is sourced from the original manufacturer or authorized distributors?
All HZS4.7NB1TD-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 HZS4.7NB1TD-E meets industry standards.
7.What is the process for return or replacement of HZS4.7NB1TD-E?
All HZS4.7NB1TD-E units undergo pre-shipment inspection (PSI). If there is an issue with HZS4.7NB1TD-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 HZS4.7NB1TD-E part is unused and in its original packaging.
Return procedure for HZS4.7NB1TD-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HZS4.7NB1TD-E Tags
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