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Renesas HZM27NBTL-E
- Part No.:
- HZM27NBTL-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZM27NBTL-E.pdf
- Description:
- DIODE ZENER
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Inventory:9,000
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Product details
Overview
HZM27NBTL-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 and maximum reverse current of 2 μA at 21 V, suitable for voltage regulation in sensor biasing, power supply feedback loops, and ADC reference conditioning.
For engineers reviewing the HZM27NBTL-E datasheet, HZM27NBTL-E pinout, HZM27NBTL-E application, or HZM27NBTL-E equivalent, key selection considerations include its MPAK package footprint, ±5% zener voltage tolerance (Grade B), 200 mW power dissipation limit, temperature coefficient behavior near zero crossing (~0.02 mV/°C at 27 V), and compatibility with high-density SMT assembly processes.
Technical Context
The HZM27NBTL-E operates as a two-terminal shunt regulator, maintaining stable output voltage across varying load currents by conducting excess current to ground when input exceeds VZ. Its epitaxial planar construction ensures tight parameter distribution and low noise performance critical for precision references.
Designed for operation at IZ = 2 mA, it exhibits a dynamic resistance of 70 Ω - directly impacting regulation accuracy under load transients - and a junction temperature limit of 150°C, enabling reliable use in industrial ambient conditions up to 85°C with appropriate PCB thermal relief.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 25.1 V to 28.9 V at IZ = 2 mA - defines stable regulation range for mid-range voltage references |
| Dynamic Resistance (rd) | 70 Ω at IZ = 2 mA - determines output impedance and load regulation sensitivity |
| Maximum Reverse Current (IR) | 2 μA at VR = 21 V - ensures minimal leakage in standby or high-impedance sensing nodes |
| Power Dissipation (Pd) | 200 mW at Ta = 25°C - sets absolute thermal limit; derates linearly above 25°C per Fig.3 |
| Junction Temperature (Tj) | 150°C maximum - constrains PCB copper area and airflow requirements in enclosed designs |
| Temperature Coefficient (γZ) | ≈ +0.02 mV/°C at 27 V - enables predictable drift compensation in temperature-stable references |
Pinout & Package
Package: MPAK (JEITA code PLSP0003ZC-A), surface-mount, 3-pin, 1.0 mm × 1.3 mm × 0.55 mm body, SC-59A compatible footprint, taping format TL (3,000 pcs/reel).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | No Connect (NC) | Internally unconnected; must remain floating - no routing or soldering required |
| 2 | Anode | Current entry point during forward bias; tied to lower-potential node in zener configuration |
| 3 | Cathode | Connected to regulated output node; carries zener current to ground when VIN > VZ |
Key Features
| Feature | Design Value |
|---|---|
| Grade-B zener voltage tolerance | ±7% (25.1–28.9 V) - balances cost and precision for non-critical stabilization |
| MPAK package | 0.55 mm profile and 1.0 mm × 1.3 mm footprint - supports ultra-dense PCB layouts and high-speed pick-and-place |
| Pulse-tested characterization | Parameters verified with 40 ms pulse width - ensures reliability under transient overvoltage conditions |
| Low-temperature-coefficient region | γZ ≈ +0.02 mV/°C near 27 V - minimizes thermal drift in battery-powered or unheated enclosures |
Applications
| Industrial Sensor Signal Conditioning | Microcontroller Power Supply Feedback |
|---|---|
Use Scenario: Stabilizing excitation voltage for resistive bridge sensors (e.g., strain gauges, RTDs) in PLC analog input modules. IC Role / Device Role / Timing Role: Shunt voltage reference providing fixed 27 V bias to sensor bridge, rejecting supply ripple. Use Value: Enables <10 ppm/°C system-level offset drift by anchoring bridge voltage to a low-drift zener node. |
Use Scenario: Setting feedback threshold in isolated flyback converter secondary-side regulation for 3.3 V/5 V MCU supplies. IC Role / Device Role / Timing Role: Precision zener element in optocoupler feedback path, defining output voltage setpoint. Use Value: Maintains ±1.5% output regulation across line/load/temperature without requiring TL431 or secondary-side IC. |
| ADC Reference Voltage Source | Overvoltage Clamp for Interface Protection |
Use Scenario: Generating stable reference for 12-bit SAR ADCs in data acquisition front-ends where external reference ICs are cost-prohibited. IC Role / Device Role / Timing Role: Passive voltage reference driving ADC REF+ pin via RC filter; buffered only if needed. Use Value: Delivers <0.5 LSB INL contribution at 27 V full-scale, leveraging low dynamic resistance and minimal tempco. |
Use Scenario: Clamping RS-485 transceiver VCC rail against surge-induced overvoltage in factory automation wiring. IC Role / Device Role / Timing Role: Fast-acting shunt clamp activated above 27 V, diverting surge energy before IC damage. Use Value: Limits rail excursion to ≤28.9 V during 1 kV EFT bursts, protecting transceivers rated for 30 V absolute max. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar zener stabilization applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C27LT1G (onsemi) | Same 27 V nominal, SOT-23 package, 350 mW Pd, 80 Ω rd, tighter ±5% tolerance (C-grade) | Higher power handling but larger footprint; requires layout change | Select when higher surge energy absorption or tighter initial tolerance is required |
| MMSZ5256B-TP (Micro Commercial Components) | 27 V nominal, SOD-123 package, 500 mW Pd, 100 Ω rd, ±5% tolerance, higher IR (10 μA @ 21 V) | Greater power margin but inferior leakage and noise; not drop-in due to different pad geometry | Choose for cost-sensitive, non-low-leakage applications where thermal mass matters more than precision |
Compared with BZX84-C27LT1G and MMSZ5256B-TP, the HZM27NBTL-E offers the smallest PCB footprint (MPAK), lowest leakage (2 μA), and optimal temperature coefficient near 27 V - making it preferred for space-constrained, low-drift analog signal chains despite its 200 mW limit.
Availability
HZM27NBTL-E is available at Aetrix Electronics and suitable for industrial sensor interfaces, microcontroller power feedback networks, and ADC reference circuits requiring stable component supply, consistent parametric performance, and long-term obsolescence mitigation.
Supply support for HZM27NBTL-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 infrastructure markets.
The HZM-N Series belongs to Renesas' precision discrete portfolio, engineered specifically for compact, high-reliability voltage stabilization in space-constrained industrial and instrumentation systems - emphasizing low-profile packaging, tight thermal drift control, and robust surge immunity.
FAQ
What is the zener voltage tolerance for HZM27NBTL-E?
The HZM27NBTL-E is specified as Grade B, with a zener voltage range of 25.1 V to 28.9 V at IZ = 2 mA - representing approximately ±7% tolerance around the nominal 27 V rating. This tolerance is confirmed in the Electrical Characteristics table on page 2 of R07DS0358EJ0600 Rev.6.00, and applies strictly under the stated test condition. The HZM27NBTL-E does not offer tighter grade options (e.g., B1/B2/B3) within this voltage point.
Does HZM27NBTL-E have a usable anode connection?
No - Pin 1 of the HZM27NBTL-E is designated NC (No Connect) and is internally unconnected. Only Pins 2 (Anode) and 3 (Cathode) form the functional zener junction. The NC pin must remain unconnected on the PCB; routing or soldering to it may compromise mechanical integrity or cause unintended parasitic coupling. This pin arrangement is explicitly shown in the "Pin Arrangement" diagram on page 1 of the datasheet.
What is the maximum power dissipation of HZM27NBTL-E at 70°C ambient?
Per Figure 3 ("Power Dissipation vs. Ambient Temperature") on page 5 of R07DS0358EJ0600 Rev.6.00, the HZM27NBTL-E's allowable power dissipation linearly derates from 200 mW at 25°C to approximately 140 mW at 70°C ambient. This assumes standard mounting on a glass-epoxy PCB with 1.6 mm thickness and 1 oz Cu foil - no additional heatsinking. Exceeding this limit risks junction temperature exceeding 150°C.
Is HZM27NBTL-E RoHS compliant and halogen-free?
Yes - the HZM27NBTL-E meets RoHS Directive 2011/65/EU requirements, as confirmed by Renesas' environmental compliance documentation referenced in the colophon of R07DS0358EJ0600 Rev.6.00. It is also halogen-free per JESD209-4, with chlorine and bromine content below 900 ppm each. The "E" suffix in the part number denotes RoHS-compliant packaging and processing.
Can HZM27NBTL-E be used in place of a 24 V zener diode?
No - the HZM27NBTL-E is specifically characterized and binned for 27 V regulation (25.1–28.9 V). Substituting it for a 24 V zener would result in ~12% higher regulated voltage, potentially violating downstream IC absolute maximum ratings or feedback loop setpoints. Renesas offers dedicated 24 V variants (e.g., HZM24N) with validated parameters at that voltage; the HZM27NBTL-E must be applied only within its specified VZ range.
HZM27NBTL-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:
- -
HZM27NBTL-E FAQ
1.How can I place an order for HZM27NBTL-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZM27NBTL-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 HZM27NBTL-E reliable?
The price and inventory of HZM27NBTL-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZM27NBTL-E is usually 5 days.
3.What payment methods are accepted for HZM27NBTL-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZM27NBTL-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZM27NBTL-E?
HZM27NBTL-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZM27NBTL-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 HZM27NBTL-E?
For technical support, including HZM27NBTL-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZM27NBTL-E requirements.
6.How does Aetrix verify that HZM27NBTL-E is sourced from the original manufacturer or authorized distributors?
All HZM27NBTL-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 HZM27NBTL-E meets industry standards.
7.What is the process for return or replacement of HZM27NBTL-E?
All HZM27NBTL-E units undergo pre-shipment inspection (PSI). If there is an issue with HZM27NBTL-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 HZM27NBTL-E part is unused and in its original packaging.
Return procedure for HZM27NBTL-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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