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Renesas HZM4.7NB1TL-E
- Part No.:
- HZM4.7NB1TL-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZM4.7NB1TL-E.pdf
- Description:
- DIODE ZENER
- Quantity:
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Product details
Overview
HZM4.7NB1TL-E from Renesas Electronics is a silicon epitaxial planar Zener diode designed for precision voltage stabilization in low-power analog and reference circuits. It delivers a nominal zener voltage of 4.7 V (min 4.84 V, max 5.04 V at IZ = 5 mA), with dynamic resistance ≤130 Ω, reverse current ≤10 μA at VR = 1.0 V, and power dissipation up to 200 mW in the MPAK package - commonly used in voltage reference rails for sensor signal conditioning and microcontroller reset circuitry.
For engineers reviewing the HZM4.7NB1TL-E datasheet, HZM4.7NB1TL-E pinout, HZM4.7NB1TL-E application, or HZM4.7NB1TL-E equivalent, key selection criteria include its B1-grade zener tolerance (±2.5% at 4.7 V), low temperature coefficient (~+0.025 mV/°C near 4.7 V), surface-mount MPAK footprint compatibility, and suitability for space-constrained 3.3 V/5 V system biasing and overvoltage clamping.
Technical Context
This device operates as a two-terminal shunt regulator, maintaining stable output voltage across varying load currents by conducting excess current through its cathode–anode path once reverse breakdown is reached. Its epitaxial planar construction ensures tight VZ distribution and repeatable rd performance under pulsed test conditions (Pw = 40 ms).
The HZM4.7NB1TL-E is optimized for DC voltage reference and transient suppression in low-current (<5 mA) applications. It does not support bidirectional operation or high-speed switching; its design centers on static regulation accuracy, thermal stability, and minimal leakage - validated per absolute maximum ratings including Tj = 150 °C and Pd = 200 mW at Ta = 25 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 4.84 V to 5.04 V at IZ = 5 mA - defines precise regulation point for 5 V rail referencing or clamping. |
| Dynamic Resistance (rd) | ≤130 Ω at IZ = 5 mA - determines output impedance and load regulation sensitivity in feedback paths. |
| Reverse Current (IR) | ≤10 μA at VR = 1.0 V - ensures minimal standby leakage in battery-backed or ultra-low-power circuits. |
| Power Dissipation (Pd) | 200 mW - sets maximum continuous power handling without derating; supports operation up to ~100 °C ambient with PCB thermal relief. |
| Junction Temperature (Tj) | 150 °C - defines upper thermal limit for reliable long-term operation in enclosed industrial environments. |
| Zener Grade | B1 - indicates ±2.5% VZ tolerance band, tighter than standard B grade (±5%), suitable for calibrated references. |
| Package | MPAK (JEITA PLSP0003ZC-A) - 3-pin SMT package with NC, anode, cathode layout; enables high-density placement and reflow compatibility. |
Pinout & Package
MPAK package (JEITA code PLSP0003ZC-A), 3-terminal surface-mount device with exposed pad thermal path; dimensions: 2.7–3.1 mm × 1.35–1.65 mm × 0.8–1.0 mm (L × W × H); mass ≈ 0.011 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | No Connect (NC) | Internally unconnected; must remain floating - no routing or grounding required on PCB. |
| 2 | Anode | Forward-biased terminal; tied to lower potential (e.g., GND or supply return) in shunt regulation configuration. |
| 3 | Cathode | Reverse-biased terminal; connected to regulated node (e.g., VREF or input rail) to sink excess current during breakdown. |
Key Features
| Feature | Design Value |
|---|---|
| Grade-B1 Zener Tolerance | ±2.5% VZ at 4.7 V enables tighter reference accuracy vs. standard B-grade parts without trimming. |
| Low Dynamic Resistance | ≤130 Ω improves line/load regulation in precision analog front-ends and ADC reference buffers. |
| MPAK Surface-Mount Package | Compact 3-pin footprint supports automated assembly and high board density in portable and IoT devices. |
| Controlled Temperature Coefficient | +0.025 mV/°C near 4.7 V minimizes drift over industrial temperature range (–55 to +150 °C). |
| Pulse-Tested Electrical Parameters | All VZ, rd, and IR specified under 40 ms pulse - ensures consistency in real-world transient-limited operation. |
Applications
| Microcontroller Reset Circuit | Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Providing a stable 4.7 V threshold to trigger a supervisor IC's reset output when main supply drops below safe operating level. IC Role / Device Role / Timing Role: Shunt voltage reference defining the precise undervoltage detection threshold. Use Value: B1-grade tolerance ensures reset assertion occurs within ±2.5% of nominal 4.7 V, reducing false triggers in noisy 5 V systems. |
Use Scenario: Biasing a bridge-based pressure sensor in a medical wearable, where excitation voltage stability directly impacts measurement linearity. IC Role / Device Role / Timing Role: Low-drift, low-noise voltage reference source for sensor excitation and ADC reference scaling. Use Value: 130 Ω dynamic resistance and <10 μA leakage maintain excitation accuracy under varying sensor loading and battery drain conditions. |
| USB-C Power Negotiation Clamp | Industrial PLC Analog Input Protection |
|
Use Scenario: Clamping CC line voltage during USB-C port enumeration to prevent overvoltage damage to controller GPIOs. IC Role / Device Role / Timing Role: Fast-acting shunt clamp limiting transient spikes to ≤5.04 V while drawing minimal quiescent current. Use Value: 200 mW rating and MPAK thermal profile allow brief 100 mA surge absorption without thermal runaway or parameter shift. |
Use Scenario: Protecting 4–20 mA loop receiver inputs against field-wiring transients in factory automation cabinets. IC Role / Device Role / Timing Role: Primary overvoltage limiter placed before series current-limiting resistor and op-amp input stage. Use Value: NC pin isolates unused terminal, eliminating parasitic coupling; low IR avoids loading sensitive input stages during normal operation. |
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-C4V7LT1G | Same nominal VZ (4.7 V), but ±5% tolerance (B grade), higher rd (≤130 Ω typical, not guaranteed max), SOT-23 package (3-pin, different pinout: cathode-anode-NC). | Lacks B1-grade precision; better suited for non-critical biasing where cost and legacy footprint matter more than reference accuracy. | Select if existing SOT-23 layout prohibits MPAK adoption and ±5% VZ is acceptable. |
| MMSZ4701T1G | VZ = 4.7 V ±5%, rd ≤ 130 Ω (typ), SOD-123 package (2-pin, no NC), 500 mW Pd, higher leakage (IR ≤ 10 μA @ VR = 3.0 V). | Two-terminal design simplifies layout but removes NC isolation benefit; higher Pd suits higher-energy transients but increases board area. | Choose for higher surge robustness and simplified routing where NC functionality is unnecessary. |
Compared with BZX84-C4V7LT1G and MMSZ4701T1G, the HZM4.7NB1TL-E provides tighter VZ control (±2.5%), guaranteed rd maximum, and NC isolation - making it preferable for calibrated references and noise-sensitive analog nodes, despite requiring MPAK-compatible layout.
Availability
HZM4.7NB1TL-E is available at Aetrix Electronics and suitable for microcontroller reset circuits, sensor excitation rails, USB-C interface clamping, and industrial analog input protection requiring stable component supply, consistent grade-B1 tolerancing, and MPAK package compatibility.
Supply support for HZM4.7NB1TL-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, power, and timing solutions for industrial, automotive, and enterprise applications.
The HZM-N Series is part of Renesas' discrete Zener portfolio engineered for high-precision, low-leakage voltage stabilization in space-constrained surface-mount designs - targeting reference, protection, and biasing roles in mission-critical embedded systems.
FAQ
What is the exact zener voltage range for HZM4.7NB1TL-E at 5 mA test current?
The HZM4.7NB1TL-E has a guaranteed zener voltage range of 4.84 V to 5.04 V when tested at IZ = 5 mA, corresponding to its B1 grade specification. This ±2.5% tolerance is tighter than the standard B grade (±5%) and is confirmed in the R07DS0358EJ0600 datasheet Table on page 2. The HZM4.7NB1TL-E achieves this precision via epitaxial planar process control and lot-level screening.
Does HZM4.7NB1TL-E have a functional third pin, and how should Pin 1 be handled on the PCB?
No - Pin 1 of the HZM4.7NB1TL-E is designated "NC" (No Connect) and is internally unconnected. Per the datasheet pin arrangement diagram and ordering information, Pin 1 must remain electrically floating on the PCB; it should not be routed, grounded, or tied to any net. This isolation prevents unintended coupling in high-impedance reference paths and is a deliberate feature of the MPAK package layout.
What is the maximum allowable reverse current for HZM4.7NB1TL-E at 1.0 V applied voltage?
The HZM4.7NB1TL-E specifies a maximum reverse current (IR) of 10 μA when VR = 1.0 V, as stated in the Electrical Characteristics table on page 2 of R07DS0358EJ0600. This low leakage supports ultra-low-power operation in battery-backed systems and ensures minimal loading of high-impedance nodes - a key advantage over higher-leakage alternatives like general-purpose 1N4733A.
Can HZM4.7NB1TL-E be used in place of a standard 4.7 V Zener diode like 1N4733A?
No - the HZM4.7NB1TL-E is not a drop-in replacement for 1N4733A due to fundamental differences: it uses a 3-pin MPAK package (with NC, anode, cathode) versus 1N4733A's 2-pin DO-41 axial lead; its power rating is 200 mW vs. 1W; and its VZ tolerance is tighter (±2.5% vs. ±5%). Substitution requires PCB layout change, thermal redesign, and verification of load regulation under reduced Pd.
What is the temperature coefficient of HZM4.7NB1TL-E near its nominal zener voltage?
The HZM4.7NB1TL-E exhibits a positive temperature coefficient of approximately +0.025 mV/°C near 4.7 V, as interpolated from Figure 2 ("Temperature Coefficient vs. Zener Voltage") on page 5 of R07DS0358EJ0600. This low drift supports stable reference performance across –55 °C to +150 °C junction temperatures, making the HZM4.7NB1TL-E suitable for industrial-grade analog circuits without external compensation.
HZM4.7NB1TL-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:
- -
HZM4.7NB1TL-E FAQ
1.How can I place an order for HZM4.7NB1TL-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZM4.7NB1TL-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 HZM4.7NB1TL-E reliable?
The price and inventory of HZM4.7NB1TL-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZM4.7NB1TL-E is usually 5 days.
3.What payment methods are accepted for HZM4.7NB1TL-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZM4.7NB1TL-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZM4.7NB1TL-E?
HZM4.7NB1TL-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZM4.7NB1TL-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 HZM4.7NB1TL-E?
For technical support, including HZM4.7NB1TL-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZM4.7NB1TL-E requirements.
6.How does Aetrix verify that HZM4.7NB1TL-E is sourced from the original manufacturer or authorized distributors?
All HZM4.7NB1TL-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 HZM4.7NB1TL-E meets industry standards.
7.What is the process for return or replacement of HZM4.7NB1TL-E?
All HZM4.7NB1TL-E units undergo pre-shipment inspection (PSI). If there is an issue with HZM4.7NB1TL-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 HZM4.7NB1TL-E part is unused and in its original packaging.
Return procedure for HZM4.7NB1TL-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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