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Renesas HZM3.9NB2TR-E
- Part No.:
- HZM3.9NB2TR-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZM3.9NB2TR-E.pdf
- Description:
- DIODE ZENER
- Quantity:
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Inventory:83,200
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Product details
Overview
HZM3.9NB2TR-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 3.97 V (typical), with dynamic resistance of 130 Ω at 5 mA, power dissipation up to 200 mW, and operates within –55°C to +150°C storage temperature range. It is commonly used in voltage reference generation for sensor signal conditioning and microcontroller reset circuitry.
For engineers reviewing the HZM3.9NB2TR-E datasheet, HZM3.9NB2TR-E pinout, HZM3.9NB2TR-E application, or HZM3.9NB2TR-E equivalent, key selection considerations include its B2-grade zener voltage tolerance (3.87–4.10 V), MPAK surface-mount package compatibility with high-density PCB layouts, thermal stability across industrial temperature ranges, and suitability for low-current (<5 mA) stabilization tasks where tight regulation and minimal dynamic impedance are required.
Technical Context
The HZM3.9NB2TR-E employs a silicon epitaxial planar junction structure optimized for stable reverse-breakdown behavior under DC and pulsed conditions (Pw = 40 ms). Its zener voltage exhibits a positive temperature coefficient near zero crossing (~0.02 mV/°C at 3.9 V), minimizing drift over ambient temperature variations.
Designed for operation at IZ = 5 mA, it maintains low dynamic resistance (130 Ω max) and guarantees reverse current ≤10 μA at VR = 1.0 V - critical for low-leakage bias networks and precision shunt references in battery-powered systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 3.87–4.10 V at IZ = 5 mA - defines stable regulation window for 3.3 V system references and LDO feedback nodes. |
| Dynamic Resistance (rd) | 130 Ω max at IZ = 5 mA - ensures minimal output voltage shift under load transients in reference circuits. |
| Power Dissipation (Pd) | 200 mW at Ta = 25°C - supports continuous operation in compact SMT layouts without forced cooling. |
| Reverse Current (IR) | ≤10 μA at VR = 1.0 V - enables use in ultra-low-power standby biasing and leakage-sensitive analog front-ends. |
| Junction Temperature (Tj) | 150°C max - allows reliable operation in enclosed industrial enclosures or near heat-generating components. |
| Package | MPAK (PLSP0003ZC-A) - 3-pin surface-mount package with 0.65 mm lead pitch, compatible with standard reflow profiles. |
Pinout & Package
MPAK package: 3-terminal surface-mount device with exposed cathode pad for thermal enhancement; dimensions per JEITA code PLSP0003ZC-A (D = 2.7–3.1 mm, E = 1.35–1.65 mm, L = 0.65 mm).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | No Connect (NC) | Electrically isolated terminal - must remain unconnected; no internal bond wire or junction. |
| 2 | Anode | Forward-biased terminal during normal conduction; connected to lower-potential node in shunt regulator configuration. |
| 3 | Cathode | Zener breakdown terminal - connects to regulated voltage rail; carries full zener current in stabilization mode. |
Key Features
| Feature | Design Value |
|---|---|
| Grade-B2 zener voltage tolerance | ±3.3% (3.87–4.10 V) - tighter than standard B-grade, enabling higher accuracy without external trimming. |
| Low dynamic impedance | 130 Ω max at 5 mA - improves line and load regulation in shunt reference designs. |
| MPAK surface-mount package | 0.65 mm lead pitch, 1.0 mm height - supports automated placement and high board density in space-constrained modules. |
| Industrial temperature range | –55°C to +150°C storage, 150°C max junction - suitable for automotive under-hood and industrial control environments. |
Applications
| Microcontroller Reset Circuit | Sensor Signal Conditioning |
|---|---|
Use Scenario: Generating a stable 3.9 V threshold for brown-out detection in 3.3 V MCU systems. IC Role / Device Role / Timing Role: Shunt voltage reference providing precise trip point for reset ICs or internal POR logic. Use Value: Eliminates need for external voltage divider; B2-grade tolerance ensures consistent reset assertion across temperature and unit variance. |
Use Scenario: Biasing bridge sensors (e.g., strain gauges) requiring low-drift excitation voltage. IC Role / Device Role / Timing Role: Low-noise, low-leakage voltage reference source for ratiometric measurement setups. Use Value: IR ≤10 μA at 1 V prevents loading error in high-impedance sensor bridges; rd = 130 Ω minimizes noise coupling. |
| Portable Instrument Reference | Industrial Analog Input Module |
Use Scenario: Providing reference voltage for 12-bit ADCs in handheld test equipment powered by single Li-ion cell. IC Role / Device Role / Timing Role: Low-power shunt regulator stabilizing VREF input to SAR ADCs operating down to 2.8 V supply. Use Value: 200 mW Pd rating accommodates intermittent 5 mA bursts without thermal derating; MPAK footprint saves board area. |
Use Scenario: Calibrating 4–20 mA transmitter outputs using precision current-sense resistor biasing. IC Role / Device Role / Timing Role: Stable excitation source for precision current-source reference dividers. Use Value: Tj = 150°C rating ensures reliability in sealed DIN-rail enclosures; NC pin simplifies layout isolation from noisy ground planes. |
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-C3V9 (ON Semiconductor) | Same nominal VZ (3.9 V), SOT-23 package, 350 mW Pd, ±5% tolerance (B grade), rd ≈ 90 Ω. | Higher power rating but looser tolerance; requires larger PCB footprint than MPAK. | Prefer when higher surge capability or legacy SOT-23 compatibility is needed; not drop-in due to different pinout and package size. |
| MMSZ4685 (Vishay) | VZ = 3.9 V (±5%), SOD-123 package, 500 mW Pd, rd = 130 Ω, IR = 10 μA @ 1 V. | Higher Pd and larger case; lacks NC pin - all three terminals electrically active. | Select for cost-sensitive high-volume production where thermal margin >200 mW is required; incompatible pin mapping precludes direct replacement. |
Compared with BZX84-C3V9 and MMSZ4685, the HZM3.9NB2TR-E offers tighter B2-grade voltage tolerance and an NC pin for improved noise isolation in mixed-signal layouts, while its MPAK package enables higher component density - making it optimal for space-constrained industrial and portable instrumentation where regulation accuracy and layout integrity are prioritized over raw power handling.
Availability
HZM3.9NB2TR-E is available at Aetrix Electronics and suitable for voltage reference generation, sensor excitation, microcontroller reset circuits, and analog signal conditioning requiring stable component supply with traceable sourcing and long-term lifecycle support.
Supply support for HZM3.9NB2TR-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 power devices, and timing solutions for industrial, automotive, and infrastructure markets.
The HZM-N Series is part of Renesas' discrete Zener portfolio engineered for high-accuracy, low-drift voltage stabilization in space- and power-constrained applications - emphasizing grade-specific tolerances, thermal robustness, and surface-mount manufacturability.
FAQ
What is the zener voltage tolerance for HZM3.9NB2TR-E?
The HZM3.9NB2TR-E has a B2-grade zener voltage specification of 3.87 V minimum to 4.10 V maximum at 5 mA test current, corresponding to a ±3.3% tolerance around the typical 3.97 V value. This tighter tolerance than standard B-grade devices makes HZM3.9NB2TR-E suitable for applications demanding higher reference accuracy without calibration.
Is HZM3.9NB2TR-E compatible with standard reflow soldering processes?
Yes, HZM3.9NB2TR-E uses the MPAK package (JEITA code PLSP0003ZC-A), which is qualified for standard Pb-free reflow profiles including J-STD-020 moisture sensitivity level 1. Its thermal characteristics support peak temperatures up to 260°C for ≤30 seconds, making HZM3.9NB2TR-E compatible with automated SMT assembly lines without special process adjustments.
What does the "NC" pin on HZM3.9NB2TR-E signify, and how should it be handled on the PCB?
Pin 1 of HZM3.9NB2TR-E is designated "NC" (No Connect) - it is electrically isolated with no internal connection. On the PCB, this terminal must remain unconnected and should not be tied to ground, power, or any other net. Leaving it floating avoids unintended parasitic coupling; routing clearance around Pin 1 is recommended in noise-sensitive analog sections.
Can HZM3.9NB2TR-E be used in place of a 3.3 V zener diode?
No - HZM3.9NB2TR-E is specified for 3.87–4.10 V zener voltage and is not rated for 3.3 V operation. Using it as a 3.3 V reference would result in insufficient reverse breakdown and unstable regulation. For 3.3 V stabilization, Renesas offers HZM3.3NB2TR-E (3.25–3.50 V); always match the exact zener voltage grade and tolerance to the target application requirement.
Does HZM3.9NB2TR-E meet RoHS and REACH compliance requirements?
Yes, HZM3.9NB2TR-E complies with EU RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006, as confirmed in Renesas' official environmental documentation. The device contains no restricted substances above threshold limits and is marked with appropriate compliance identifiers in its packaging and datasheet revision R07DS0358EJ0600.
HZM3.9NB2TR-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:
- -
HZM3.9NB2TR-E FAQ
1.How can I place an order for HZM3.9NB2TR-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZM3.9NB2TR-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 HZM3.9NB2TR-E reliable?
The price and inventory of HZM3.9NB2TR-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZM3.9NB2TR-E is usually 5 days.
3.What payment methods are accepted for HZM3.9NB2TR-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZM3.9NB2TR-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZM3.9NB2TR-E?
HZM3.9NB2TR-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZM3.9NB2TR-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 HZM3.9NB2TR-E?
For technical support, including HZM3.9NB2TR-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZM3.9NB2TR-E requirements.
6.How does Aetrix verify that HZM3.9NB2TR-E is sourced from the original manufacturer or authorized distributors?
All HZM3.9NB2TR-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 HZM3.9NB2TR-E meets industry standards.
7.What is the process for return or replacement of HZM3.9NB2TR-E?
All HZM3.9NB2TR-E units undergo pre-shipment inspection (PSI). If there is an issue with HZM3.9NB2TR-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 HZM3.9NB2TR-E part is unused and in its original packaging.
Return procedure for HZM3.9NB2TR-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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