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Renesas HZM20NB3TR-E
- Part No.:
- HZM20NB3TR-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZM20NB3TR-E.pdf
- Description:
- DIODE ZENER
- Quantity:
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Inventory:24,000
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Product details
Overview
HZM20NB3TR-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 20.21–21.08 V at 5 mA test current, with dynamic resistance of 50 Ω, power dissipation rating of 200 mW, and operates within a junction temperature range up to 150 °C - commonly used in power supply feedback loops and sensor biasing networks.
For engineers reviewing the HZM20NB3TR-E datasheet, HZM20NB3TR-E pinout, HZM20NB3TR-E application, or HZM20NB3TR-E equivalent, key selection criteria include its B3-grade zener voltage tolerance (±2.2%), MPAK surface-mount package compatibility with high-density PCB layouts, thermal stability across –55 to +150 °C storage range, and suitability for space-constrained industrial and consumer voltage reference designs.
Technical Context
The HZM20NB3TR-E employs a silicon epitaxial planar junction structure optimized for stable reverse-breakdown behavior under DC and pulsed conditions (40 ms pulse width). Its zener voltage exhibits a positive temperature coefficient of approximately +0.07 mV/°C near 20 V, enabling predictable drift compensation in multi-device references.
Designed for operation at IZ = 5 mA, it maintains low dynamic impedance (50 Ω max) and tight voltage regulation (±2.2% tolerance), with reverse leakage limited to 2 µA at VR = 15.0 V - supporting stable performance in low-current bias and error-amplifier applications without significant self-heating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 20.21–21.08 V at IZ = 5 mA - defines precise stabilization point for feedback or reference circuits. |
| Dynamic Resistance (rd) | 50 Ω max at IZ = 5 mA - ensures minimal output voltage variation under load current changes. |
| Power Dissipation (Pd) | 200 mW at Ta = 25 °C - sets maximum continuous power handling before thermal derating applies. |
| Reverse Current (IR) | 2 µA max at VR = 15.0 V - guarantees low leakage in high-impedance sensing or standby bias paths. |
| Junction Temperature (Tj) | 150 °C max - enables reliable operation in thermally demanding environments like enclosed power modules. |
| Package | MPAK (PLSP0003ZC-A) - 3-pin SMT package with 0.65 mm lead pitch, optimized for automated assembly and board density. |
| Temperature Coefficient (γZ) | +0.07 mV/°C - supports predictable voltage drift modeling for temperature-compensated designs. |
Pinout & Package
MPAK package (JEITA code PLSP0003ZC-A) - ultra-compact surface-mount outline measuring 2.7 × 1.35 × 0.95 mm (L × W × H), with gull-wing leads and 0.65 mm pin pitch. Designed for reflow soldering on standard FR-4 PCBs with 1.6 mm thickness and Cu foil.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | No Connect (NC) | Internally unconnected terminal - must remain floating; no routing or grounding required. |
| 2 | Anode | Forward-biased terminal during conduction; connected to lower-potential node in zener configuration. |
| 3 | Cathode | Connected to higher-potential node; reverse-biased terminal where stabilized voltage appears relative to anode. |
Key Features
| Feature | Design Value |
|---|---|
| Grade-B3 Zener Voltage Tolerance | ±2.2% (20.21–21.08 V) - enables tighter regulation than standard-grade Zeners in critical reference paths. |
| Low Dynamic Impedance | 50 Ω max - minimizes output voltage ripple under varying load or source impedance conditions. |
| MPAK Surface-Mount Package | 0.65 mm pin pitch, 2.7 × 1.35 mm footprint - supports high-density layout and high-speed pick-and-place assembly. |
| Wide Operating Temperature Range | –55 to +150 °C storage; 150 °C max junction - suitable for automotive under-hood and industrial control environments. |
| Pulsed Testing Compliance | Validated per 40 ms pulse width (Pw) - ensures reliability under transient overvoltage clamp conditions. |
Applications
| Power Supply Feedback Loop | Sensor Bias Reference |
|---|---|
Use Scenario: Regulating output voltage in isolated flyback or buck-derived DC-DC converters via optocoupler-coupled feedback. IC Role / Device Role / Timing Role: Zener reference element setting error amplifier threshold in secondary-side regulation circuitry. Use Value: Provides stable 20.6 V reference (midpoint of 20.21–21.08 V range) for accurate ±1% output voltage control under line/load transients. |
Use Scenario: Supplying precise bias voltage to bridge-based pressure or temperature sensors in data acquisition front-ends. IC Role / Device Role / Timing Role: Low-drift voltage reference source for ratiometric excitation of Wheatstone bridges. Use Value: Delivers <2 µA leakage and <50 Ω impedance to minimize sensor offset drift and improve measurement resolution beyond 12-bit accuracy. |
| Microcontroller Reset Circuit | Overvoltage Clamp Protection |
Use Scenario: Generating clean reset signal for 3.3 V or 5 V MCUs when main supply exceeds safe operating threshold. IC Role / Device Role / Timing Role: Threshold-detection element triggering external reset IC or pull-down network upon overvoltage event. Use Value: Enables fast response (<100 ns) to 20.6 V overvoltage with predictable turn-on due to tight B3-grade VZ tolerance. |
Use Scenario: Protecting downstream analog inputs (e.g., ADC reference pins) from ESD or surge-induced overvoltage spikes. IC Role / Device Role / Timing Role: Shunt clamping device diverting excess energy to ground when input exceeds 20.6 V. Use Value: Absorbs transient energy up to 200 mW without degradation, leveraging low rd to limit clamped voltage overshoot to <21.1 V. |
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-C20LT1G (onsemi) | 20 V nominal (±5%), SOT-23 package, 350 mW Pd, 55 Ω rd, 100 nA IR @ 15 V | Higher power rating but looser voltage tolerance; smaller footprint but different pinout (cathode-anode-NC vs. NC-anode-cathode) | Select when higher surge power handling is needed and ±5% VZ tolerance is acceptable; verify PCB layout compatibility. |
| MMSZ5248B-TP (Micro Commercial Components) | 20 V nominal (±5%), SOD-123 package, 500 mW Pd, 30 Ω rd, 100 nA IR @ 15 V | Higher power and lower rd, but wider VZ tolerance and different thermal profile; no NC pin | Prefer for cost-sensitive, higher-power clamp applications where B3-grade precision is not required and board space allows SOD-123 placement. |
Compared with BZX84-C20LT1G and MMSZ5248B-TP, the HZM20NB3TR-E offers superior voltage accuracy (±2.2% vs. ±5%) and a dedicated NC pin enabling noise-isolated mounting - making it preferred for precision analog references where layout-controlled grounding and tight regulation outweigh raw power capacity.
Availability
HZM20NB3TR-E is available at Aetrix Electronics and suitable for industrial power supplies, sensor interface modules, and embedded MCU reset circuits requiring stable component supply, consistent parametric performance across production lots, and long-term availability for legacy system maintenance.
Supply support for HZM20NB3TR-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 Corporation is a global semiconductor leader specializing in microcontrollers, analog & power devices, and SoC solutions for industrial, automotive, and enterprise applications.
The HZM-N Series was developed as a family of precision Zener diodes targeting high-reliability voltage reference and stabilization needs in compact, thermally constrained systems - emphasizing grade-specific tolerances, low dynamic impedance, and MPAK packaging for modern SMT manufacturing.
FAQ
What is the exact zener voltage range for HZM20NB3TR-E at 5 mA test current?
The HZM20NB3TR-E has a guaranteed zener voltage range of 20.21 V to 21.08 V when tested at IZ = 5 mA and Ta = 25 °C. This B3-grade specification reflects ±2.2% tolerance around the nominal 20.6 V midpoint, confirmed in Renesas' R07DS0358EJ0600 datasheet, Page 3.
Does HZM20NB3TR-E have a functional pin 1, and what is its purpose?
No - pin 1 of the HZM20NB3TR-E is designated "NC" (No Connect) and is internally unconnected. Per the official pin arrangement diagram (R07DS0358EJ0600, Page 1), it must remain electrically floating with no PCB trace or component connection to avoid unintended coupling or mechanical stress on the die.
What is the maximum allowable reverse voltage before breakdown for HZM20NB3TR-E?
The HZM20NB3TR-E does not specify a discrete "breakdown threshold" - instead, it is characterized by its zener voltage VZ = 20.21–21.08 V at IZ = 5 mA. Below this range, reverse leakage remains ≤2 µA at 15.0 V (per datasheet Page 3); sustained operation above 21.08 V at rated current will maintain regulation, not avalanche failure.
Can HZM20NB3TR-E be used in place of a standard 20 V Zener diode like 1N4744A?
While both regulate near 20 V, the HZM20NB3TR-E is not a direct replacement for 1N4744A due to fundamental differences: it uses an MPAK package (3-pin, NC-anode-cathode) versus DO-41 (2-pin), has tighter B3-grade tolerance (±2.2% vs. ±10%), and lower Pd (200 mW vs. 1 W). Direct substitution requires PCB redesign and validation of thermal and accuracy requirements.
What is the temperature coefficient of HZM20NB3TR-E, and how does it affect circuit design?
The HZM20NB3TR-E exhibits a positive temperature coefficient of approximately +0.07 mV/°C near 20 V (R07DS0358EJ0600, Page 5, Fig.2). This means its zener voltage increases ~1.4 mV per 20 °C rise - a factor that must be included in precision reference designs where ambient shifts exceed ±10 °C, especially in unbuffered configurations.
HZM20NB3TR-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:
- -
HZM20NB3TR-E FAQ
1.How can I place an order for HZM20NB3TR-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZM20NB3TR-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 HZM20NB3TR-E reliable?
The price and inventory of HZM20NB3TR-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZM20NB3TR-E is usually 5 days.
3.What payment methods are accepted for HZM20NB3TR-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZM20NB3TR-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZM20NB3TR-E?
HZM20NB3TR-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZM20NB3TR-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 HZM20NB3TR-E?
For technical support, including HZM20NB3TR-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZM20NB3TR-E requirements.
6.How does Aetrix verify that HZM20NB3TR-E is sourced from the original manufacturer or authorized distributors?
All HZM20NB3TR-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 HZM20NB3TR-E meets industry standards.
7.What is the process for return or replacement of HZM20NB3TR-E?
All HZM20NB3TR-E units undergo pre-shipment inspection (PSI). If there is an issue with HZM20NB3TR-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 HZM20NB3TR-E part is unused and in its original packaging.
Return procedure for HZM20NB3TR-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HZM20NB3TR-E Tags
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MM5Z5V1ST1G
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