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Renesas HZM4.3NB1TR-E
- Part No.:
- HZM4.3NB1TR-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZM4.3NB1TR-E.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:27,000
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Product details
Overview
HZM4.3NB1TR-E from Renesas Electronics is a silicon epitaxial planar Zener diode designed for precision voltage stabilization in low-power analog and power-supply reference circuits, with a nominal zener voltage of 4.3 V (B1 grade: 4.42–4.61 V), dynamic resistance of 130 Ω at 5 mA, and maximum power dissipation of 200 mW in the MPAK surface-mount package.
For engineers reviewing the HZM4.3NB1TR-E datasheet, HZM4.3NB1TR-E pinout, HZM4.3NB1TR-E application, or HZM4.3NB1TR-E equivalent, this device serves as a compact, temperature-stable voltage reference for biasing, overvoltage protection, and feedback regulation in space-constrained DC-DC converters, sensor signal conditioning, and microcontroller reset circuits.
Technical Context
The HZM4.3NB1TR-E operates as a two-terminal shunt regulator, maintaining stable output voltage across its cathode-anode terminals under reverse-biased conditions. Its zener breakdown mechanism provides predictable voltage clamping with a temperature coefficient of approximately +0.03 mV/°C near 4.3 V, enabling moderate thermal stability without external compensation.
Designed for surface-mount assembly on standard FR-4 PCBs, it uses the MPAK (PLSP0003ZC-A) package with three terminals - NC, anode, and cathode - where the NC pin isolates internal structure and must remain unconnected. The device is rated for junction temperatures up to 150°C and storage from –55°C to +150°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 4.42–4.61 V at IZ = 5 mA - defines precise clamping threshold for reference and protection circuits |
| Dynamic Resistance (rd) | 130 Ω max at IZ = 5 mA - determines voltage regulation sensitivity to current variation |
| Power Dissipation (Pd) | 200 mW max at Ta = 25°C - sets absolute thermal limit for continuous operation |
| Reverse Current (IR) | 10 µA max at VR = 1.0 V - ensures low leakage before breakdown onset |
| Junction Temperature (Tj) | 150°C max - defines upper thermal operating boundary for reliability |
| Package | MPAK (PLSP0003ZC-A) - 3-pin surface-mount footprint optimized for high-density PCB layout |
Pinout & Package
The HZM4.3NB1TR-E is housed in the MPAK (PLSP0003ZC-A) package - a compact 3-terminal surface-mount outline measuring 2.7 × 1.35 × 0.95 mm (L × W × H), with gull-wing leads and a typical mass of 0.011 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | No Connect (NC) | Internally isolated terminal; must remain unconnected on PCB to avoid parasitic coupling or mechanical stress |
| 2 | Anode | Forward-biased terminal; connects to lower-potential node in shunt regulation configuration |
| 3 | Cathode | Reverse-biased terminal; connects to higher-potential node and carries regulated output current |
Key Features
| Feature | Design Value |
|---|---|
| Grade-B1 Zener Voltage Tightness | ±2.2% tolerance (4.42–4.61 V) enables accurate voltage referencing without trimming |
| Low Dynamic Resistance | 130 Ω max improves load regulation in feedback loops and reference buffers |
| MPAK Surface-Mount Package | 0.95 mm profile supports ultra-thin designs and automated high-speed placement |
| Thermal Stability | +0.03 mV/°C tempco minimizes drift over industrial temperature range (–25°C to +85°C) |
Applications
| Microcontroller Reset Circuit | DC-DC Converter Feedback Reference |
|---|---|
Use Scenario: Provides clean, stable reset voltage to microcontroller POR (power-on reset) circuitry during supply ramp-up and brownout events. IC Role / Device Role / Timing Role: Shunt voltage reference defining logic-high threshold for reset assertion/deassertion timing. Use Value: Ensures deterministic reset behavior with <10 µA leakage and <130 Ω impedance, reducing false triggers in noisy environments. |
Use Scenario: Sets precise output voltage in isolated or non-isolated buck/boost converter feedback networks using optocoupler or resistor-divider interfaces. IC Role / Device Role / Timing Role: Precision voltage clamp establishing stable reference point for error amplifier input. Use Value: Maintains ±2.2% output accuracy over temperature and line/load variations due to tight VZ tolerance and low rd. |
| Sensor Signal Conditioning | Overvoltage Protection Clamp |
Use Scenario: Biases analog front-end op-amps or ADC references in temperature, pressure, or current-sense modules. IC Role / Device Role / Timing Role: Low-noise, low-drift voltage source stabilizing bias points in signal chain stages. Use Value: Delivers stable 4.5 V reference with minimal thermal drift (+0.03 mV/°C), improving measurement repeatability across –40°C to +105°C. |
Use Scenario: Clamps transient surges on 5 V rail inputs (e.g., USB, GPIO, or interface lines) to prevent damage to downstream ICs. IC Role / Device Role / Timing Role: Fast-acting shunt protector diverting excess energy when voltage exceeds 4.61 V. Use Value: Limits peak voltage to ≤4.61 V with <10 µA standby leakage, minimizing standby power loss while ensuring robust ESD/transient immunity. |
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-C4V3LT1G | Zener voltage 4.3 V ±5%, 350 mW Pd, SOT-23 package, 90 Ω rd | Higher power rating but looser tolerance; better for general-purpose clamping than precision referencing | Select when higher surge handling is needed and ±5% VZ is acceptable |
| MMSZ4V3ET1G | Zener voltage 4.3 V ±5%, 500 mW Pd, SOD-123 package, 100 Ω rd | Larger footprint and higher power; less suitable for ultra-dense layouts requiring MPAK's 2.7 mm length | Choose for cost-sensitive, non-space-constrained designs needing higher Pd margin |
Compared with BZX84-C4V3LT1G and MMSZ4V3ET1G, the HZM4.3NB1TR-E offers tighter ±2.2% voltage tolerance and MPAK's smaller footprint-critical for precision analog references in miniaturized power management ICs-while trading off absolute power handling for improved thermal density and board-area efficiency.
Availability
HZM4.3NB1TR-E is available at Aetrix Electronics and suitable for microcontroller reset circuits, DC-DC converter feedback references, and sensor signal conditioning requiring stable component supply, consistent grading, and RoHS-compliant packaging.
Supply support for HZM4.3NB1TR-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 specializing in microcontrollers, analog and power devices, and system-on-chip solutions for automotive, industrial, and consumer applications.
The HZM-N Series is part of Renesas' discrete Zener diode portfolio, engineered specifically for high-accuracy voltage stabilization in compact, thermally efficient surface-mount configurations for modern power and signal integrity designs.
FAQ
What is the exact zener voltage range for HZM4.3NB1TR-E?
The HZM4.3NB1TR-E has a guaranteed zener voltage range of 4.42 V to 4.61 V at test current IZ = 5 mA, corresponding to its B1 grade specification per Renesas R07DS0358EJ0600 Rev.6.00. This ±2.2% tolerance enables precise voltage referencing without external calibration, and the value is measured under pulsed conditions (Pw = 40 ms) to minimize self-heating effects. The HZM4.3NB1TR-E maintains this performance across ambient temperatures from –25°C to +85°C.
Is the NC pin on HZM4.3NB1TR-E required to be connected?
No - Pin 1 of the HZM4.3NB1TR-E is designated No Connect (NC) and must remain unconnected on the PCB. It is internally isolated and serves no electrical function; connecting it may introduce parasitic capacitance, mechanical stress, or unintended current paths that degrade regulation stability or long-term reliability. The functional terminals are Pin 2 (Anode) and Pin 3 (Cathode), as confirmed in the top-view pin arrangement diagram on page 1 of the Renesas datasheet.
What is the maximum power dissipation of HZM4.3NB1TR-E at 70°C ambient?
Per Figure 3 in the Renesas datasheet, the HZM4.3NB1TR-E's maximum allowable power dissipation decreases linearly with ambient temperature. At Ta = 70°C, its derated Pd is approximately 140 mW - calculated from the 200 mW rating at 25°C and the specified thermal derating slope of 2.0 mW/°C above 25°C. Exceeding this limit risks junction overheating beyond the 150°C maximum, potentially causing parametric shift or premature failure. The HZM4.3NB1TR-E must be mounted on standard FR-4 with recommended copper land patterns to achieve this rating.
Does HZM4.3NB1TR-E meet RoHS and lead-free requirements?
Yes - the HZM4.3NB1TR-E complies with the EU RoHS Directive and is lead-free, as confirmed by Renesas Electronics' environmental compliance documentation and material declarations. The MPAK package uses lead-free solderable terminations, and the device is manufactured under Renesas' standardized green production process. No exemptions apply, and full substance disclosure is available upon request for HZM4.3NB1TR-E through Aetrix Electronics' technical support portal.
How does the temperature coefficient of HZM4.3NB1TR-E affect its performance in wide-temperature applications?
The HZM4.3NB1TR-E exhibits a positive temperature coefficient of approximately +0.03 mV/°C near its 4.3 V nominal zener voltage, as shown in Figure 2 of the Renesas datasheet. This results in a total VZ shift of about ±3 mV over a –25°C to +85°C range - well within its ±2.2% grade tolerance. For applications requiring sub-10 mV drift, the HZM4.3NB1TR-E delivers sufficient stability without active compensation, making it suitable for industrial-grade sensor biasing and microcontroller reset circuits where absolute accuracy is secondary to consistency and size.
HZM4.3NB1TR-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:
- -
HZM4.3NB1TR-E FAQ
1.How can I place an order for HZM4.3NB1TR-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZM4.3NB1TR-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 HZM4.3NB1TR-E reliable?
The price and inventory of HZM4.3NB1TR-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZM4.3NB1TR-E is usually 5 days.
3.What payment methods are accepted for HZM4.3NB1TR-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZM4.3NB1TR-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZM4.3NB1TR-E?
HZM4.3NB1TR-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZM4.3NB1TR-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 HZM4.3NB1TR-E?
For technical support, including HZM4.3NB1TR-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZM4.3NB1TR-E requirements.
6.How does Aetrix verify that HZM4.3NB1TR-E is sourced from the original manufacturer or authorized distributors?
All HZM4.3NB1TR-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 HZM4.3NB1TR-E meets industry standards.
7.What is the process for return or replacement of HZM4.3NB1TR-E?
All HZM4.3NB1TR-E units undergo pre-shipment inspection (PSI). If there is an issue with HZM4.3NB1TR-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 HZM4.3NB1TR-E part is unused and in its original packaging.
Return procedure for HZM4.3NB1TR-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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