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Renesas HZM27NBTR-E
- Part No.:
- HZM27NBTR-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZM27NBTR-E.pdf
- Description:
- DIODE ZENER
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Product details
Overview
HZM27NBTR-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 27 V (min 25.1 V, max 28.9 V) at 2 mA test current, with dynamic resistance of 70 Ω, power dissipation rating of 200 mW, and operates within –55°C to +150°C storage temperature range - commonly used in voltage reference supplies for industrial sensors and power management IC biasing.
For engineers reviewing the HZM27NBTR-E datasheet, HZM27NBTR-E pinout, HZM27NBTR-E application, or HZM27NBTR-E equivalent, key selection considerations include its MPAK surface-mount package, 2 mA zener test current, ±1.9 V zener voltage tolerance, 70 Ω dynamic impedance, and suitability for space-constrained voltage regulation where thermal stability and low leakage are critical.
Technical Context
This device uses a silicon epitaxial planar junction structure optimized for stable reverse-breakdown behavior under DC and low-pulse conditions. Its zener voltage exhibits a positive temperature coefficient near 0.04 mV/°C at 27 V, enabling predictable drift compensation in reference designs.
The HZM27NBTR-E is rated for 2 mA zener test current and 2 μA maximum reverse current at 21 V, supporting reliable clamping and regulation in low-current bias networks. Its 200 mW power dissipation is defined under pulse conditions (Pw = 40 ms), making it appropriate for intermittent or thermally managed stabilization roles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 25.1 V min to 28.9 V max at IZ = 2 mA - defines usable regulation window for 27 V nominal reference design |
| Dynamic Resistance (rd) | 70 Ω max at IZ = 2 mA - determines output impedance and load regulation sensitivity |
| Reverse Current (IR) | 2 μA max at VR = 21 V - ensures low leakage in high-impedance bias networks |
| Power Dissipation (Pd) | 200 mW - sets maximum continuous steady-state power handling under derated ambient conditions |
| Junction Temperature (Tj) | 150 °C max - constrains thermal design margin in enclosed or high-ambient environments |
| Storage Temperature | –55 °C to +150 °C - supports operation across extended industrial and automotive under-hood ranges |
Pinout & Package
Package: MPAK (JEITA code PLSP0003ZC-A), surface-mount, 3-terminal plastic package with 1.0 mm × 1.3 mm footprint and 0.55 mm terminal pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | No Connect (NC) | Electrically isolated terminal; must remain unconnected on PCB to avoid parasitic coupling or mechanical stress |
| 2 | Anode | Forward-biased terminal; connects to lower potential side of regulation node in standard zener configuration |
| 3 | Cathode | Reverse-biased terminal; connects to higher potential side and serves as regulated output reference point |
Key Features
| Feature | Design Value |
|---|---|
| MPAK surface-mount package | Enables high-density PCB layout and compatibility with automated high-speed pick-and-place assembly |
| 27 V nominal zener voltage grade | Targets mid-range voltage reference needs where 24 V system rails require precise 3 V headroom or clamping |
| 70 Ω dynamic resistance | Provides stable regulation under varying load currents up to ~1 mA without external buffering |
| 2 μA max reverse leakage at 21 V | Minimizes error contribution in high-impedance feedback or sensor bias paths |
| Positive tempco (~+0.04 mV/°C) | Allows predictable drift modeling and enables complementary tempco cancellation in multi-diode references |
Applications
| Industrial Sensor Biasing | Low-Power Reference Supply |
|---|---|
Use Scenario: Providing stable excitation voltage to resistive bridge sensors in PLC analog input modules. IC Role / Device Role / Timing Role: Zener diode acting as two-terminal shunt voltage reference for ratiometric signal conditioning. Use Value: Maintains <±1% output stability over –40°C to +85°C ambient due to controlled tempco and low dynamic impedance. |
Use Scenario: Generating a clean 27 V reference for ADC voltage reference buffers in battery-powered data loggers. IC Role / Device Role / Timing Role: Passive voltage stabilizer supplying low-noise, low-drift bias to precision op-amps and voltage references. Use Value: Delivers <2 μA leakage and 70 Ω impedance, minimizing loading error and enabling >16-bit effective resolution. |
| Overvoltage Clamp Protection | Microcontroller Reset Circuit |
Use Scenario: Clamping transient spikes on 24 V industrial control bus lines exposed to inductive switching noise. IC Role / Device Role / Timing Role: Shunt protection element limiting voltage excursion to ≤28.9 V during ESD or surge events. Use Value: Absorbs short-duration energy pulses up to 200 mW without degradation, preserving downstream logic integrity. |
Use Scenario: Generating a clean reset threshold for 3.3 V microcontrollers powered from a 24 V supply via LDO. IC Role / Device Role / Timing Role: Zener-based voltage divider leg establishing accurate brown-out detection level. Use Value: Enables repeatable 27 V trigger point with ±1.9 V tolerance, ensuring deterministic reset timing across temperature. |
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-C27LT1G | 27 V nominal, SOT-23 package, 90 Ω max rd, 100 mW Pd, 5 mA IZ | Higher dynamic resistance and lower power rating limit use in precision or higher-current regulation | Select when board space allows SOT-23 and thermal budget restricts to <100 mW continuous dissipation |
| MMSZ5256B-TP | 27 V nominal, SOD-123 package, 80 Ω max rd, 500 mW Pd, 20 mA IZ | Higher power rating and different test current shift regulation point; larger footprint than MPAK | Prefer for higher-current clamp roles (>5 mA) where thermal mass and PCB real estate permit SOD-123 mounting |
Compared with BZX84-C27LT1G and MMSZ5256B-TP, the HZM27NBTR-E offers tighter zener voltage tolerance at lower test current (2 mA), lower leakage, and a compact MPAK footprint ideal for ultra-dense industrial PCBs - but requires careful thermal management above 100 mW average dissipation.
Availability
HZM27NBTR-E is available at Aetrix Electronics and suitable for industrial sensor biasing, low-power reference supplies, overvoltage clamp protection, and microcontroller reset circuits requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for HZM27NBTR-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 advanced SoCs for industrial, automotive, and infrastructure markets.
The HZM-N Series is part of Renesas' discrete Zener diode portfolio engineered specifically for high-reliability voltage stabilization in space-constrained, thermally demanding industrial and instrumentation applications.
FAQ
What is the zener voltage tolerance of HZM27NBTR-E at 25°C?
The HZM27NBTR-E has a zener voltage range of 25.1 V minimum to 28.9 V maximum at IZ = 2 mA and Ta = 25°C, corresponding to a ±1.9 V absolute tolerance. This grade-B specification ensures consistent performance across production lots without requiring binning or post-assembly calibration in most industrial reference designs.
Does HZM27NBTR-E have a no-connect pin, and how should it be handled on the PCB?
Yes, Pin 1 of the HZM27NBTR-E is designated NC (No Connect) and must remain unconnected on the PCB. It is electrically isolated and serves only mechanical or thermal anchoring purposes. Routing traces or applying solder paste to Pin 1 may cause parasitic coupling or mechanical stress that degrades long-term reliability.
What is the maximum reverse leakage current specified for HZM27NBTR-E?
The HZM27NBTR-E specifies a maximum reverse current (IR) of 2 μA at VR = 21 V and Ta = 25°C. This low leakage supports high-impedance applications such as sensor bias networks and precision voltage dividers where even nanoamp-level errors impact measurement accuracy.
Can HZM27NBTR-E be used in continuous DC regulation, or is it limited to pulsed operation?
The HZM27NBTR-E is rated for 200 mW power dissipation under pulsed conditions (Pw = 40 ms), but its absolute maximum ratings allow continuous DC operation up to 200 mW provided junction temperature remains ≤150°C. Real-world continuous use requires thermal derating based on PCB copper area, ambient temperature, and airflow - typically limiting sustained dissipation to ≤120 mW in standard FR-4 layouts.
What is the temperature coefficient of HZM27NBTR-E, and how does it affect reference stability?
The HZM27NBTR-E exhibits a positive temperature coefficient of approximately +0.04 mV/°C at 27 V, as shown in Figure 2 of the datasheet. This predictable drift enables first-order temperature compensation in multi-diode references and supports stable operation across –40°C to +125°C junction range when combined with proper thermal design.
HZM27NBTR-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:
- -
HZM27NBTR-E FAQ
1.How can I place an order for HZM27NBTR-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZM27NBTR-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 HZM27NBTR-E reliable?
The price and inventory of HZM27NBTR-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZM27NBTR-E is usually 5 days.
3.What payment methods are accepted for HZM27NBTR-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZM27NBTR-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZM27NBTR-E?
HZM27NBTR-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZM27NBTR-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 HZM27NBTR-E?
For technical support, including HZM27NBTR-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZM27NBTR-E requirements.
6.How does Aetrix verify that HZM27NBTR-E is sourced from the original manufacturer or authorized distributors?
All HZM27NBTR-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 HZM27NBTR-E meets industry standards.
7.What is the process for return or replacement of HZM27NBTR-E?
All HZM27NBTR-E units undergo pre-shipment inspection (PSI). If there is an issue with HZM27NBTR-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 HZM27NBTR-E part is unused and in its original packaging.
Return procedure for HZM27NBTR-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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