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Renesas HZM5.1NB1TR-E
- Part No.:
- HZM5.1NB1TR-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZM5.1NB1TR-E.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:9,000
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Product details
Overview
HZM5.1NB1TR-E from Renesas Electronics is a silicon epitaxial planar Zener diode designed for precision voltage stabilization in low-power analog and digital supply rails. It delivers a nominal zener voltage of 5.14–5.55 V at 5 mA test current, with dynamic resistance ≤130 Ω, power dissipation up to 200 mW, and operates within –55°C to +150°C junction temperature range - commonly used in voltage reference circuits for microcontroller reset supervision and sensor biasing.
For engineers reviewing the HZM5.1NB1TR-E datasheet, HZM5.1NB1TR-E pinout, HZM5.1NB1TR-E application, or HZM5.1NB1TR-E equivalent, key selection criteria include its B1-grade zener voltage tolerance (±4.3% at 5 mA), MPAK surface-mount package compatibility with high-density PCB layouts, thermal stability across industrial ambient temperatures, and suitability as a compact, low-cost alternative to TL431-based shunt references in space-constrained designs.
Technical Context
The HZM5.1NB1TR-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 5.1 V), minimizing drift over temperature in reference applications.
Designed for surface-mount assembly in high-volume production, the device uses a three-terminal MPAK package with Pin 1 (NC), Pin 2 (Anode), and Pin 3 (Cathode) - enabling straightforward integration into feedback networks, overvoltage clamping paths, and precision biasing nodes without requiring external compensation components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 5.14–5.55 V at IZ = 5 mA - defines tight regulation window for 5 V system references. |
| Dynamic Resistance (rd) | ≤130 Ω at IZ = 5 mA - ensures minimal output impedance and low AC ripple sensitivity. |
| Power Dissipation (Pd) | 200 mW - supports continuous operation in low-current biasing and sensing circuits. |
| Reverse Current (IR) | ≤5 µA at VR = 1.5 V - guarantees low leakage in standby or battery-powered modes. |
| Junction Temperature (Tj) | –55°C to +150°C - enables deployment in automotive under-hood and industrial control environments. |
| Package | MPAK (PLSP0003ZC-A) - 3-pin SMT package with 0.65 mm lead pitch and 2.7 × 1.35 mm footprint. |
Pinout & Package
MPAK package (JEITA code PLSP0003ZC-A), 3-terminal surface-mount device with exposed pad not electrically connected. Dimensions: 2.7 mm × 1.35 mm × 0.95 mm (L × W × H), mass ≈ 0.011 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | No Connect (NC) | Internally unconnected; must remain floating - no routing or soldering required. |
| 2 | Anode | Connected to lower-potential node (e.g., ground or common return) in reverse-biased configuration. |
| 3 | Cathode | Connected to regulated voltage node; supplies stable reference potential when reverse biased. |
Key Features
| Feature | Design Value |
|---|---|
| B1-grade voltage tolerance | ±4.3% zener voltage spread (5.14–5.55 V) - reduces need for post-assembly trimming in production. |
| Low dynamic impedance | ≤130 Ω at 5 mA - maintains regulation accuracy under varying load currents in feedback loops. |
| High-temperature operation | Rated to +150°C junction temperature - suitable for engine control units and industrial motor drives. |
| MPAK surface-mount package | 0.65 mm lead pitch, 2.7 × 1.35 mm footprint - enables automated placement and high board density. |
| Low leakage current | ≤5 µA at 1.5 V reverse bias - preserves battery life in always-on monitoring circuits. |
Applications
| Microcontroller Reset Circuit | Sensor Bias Reference |
|---|---|
Use Scenario: Provides stable 5.1 V threshold for supervisory ICs (e.g., MAX809) to assert reset during brown-out conditions. IC Role / Device Role / Timing Role: Zener diode acts as precision voltage threshold element in RC-based reset timing network. Use Value: Tight B1-grade VZ tolerance ensures consistent reset assertion across temperature and unit-to-unit variation. |
Use Scenario: Supplies stable bias voltage to analog output sensors (e.g., pressure transducers) requiring <1% reference accuracy. IC Role / Device Role / Timing Role: Functions as passive shunt reference replacing active regulators where ultra-low quiescent current is critical. Use Value: ≤5 µA reverse leakage minimizes error contribution in µA-level sensor excitation circuits. |
| ADC Reference Clamp | Overvoltage Protection Node |
Use Scenario: Clamps input to 12-bit SAR ADC reference pin (e.g., ADS7822) against transient overshoot beyond 5.5 V. IC Role / Device Role / Timing Role: Shunt limiter placed between AVDD and REF pins to absorb ESD-induced spikes. Use Value: 130 Ω dynamic resistance limits clamp voltage excursion to <50 mV above VZ during fast transients. |
Use Scenario: Protects downstream logic inputs (e.g., GPIO of STM32F4) from accidental 12 V misconnection on 5 V rail. IC Role / Device Role / Timing Role: Fast-acting crowbar element that conducts above 5.55 V to divert fault current. Use Value: 200 mW power rating sustains 100 ms overvoltage events without thermal runaway. |
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 |
|---|---|---|---|
| BZX55-C5V1 (ON Semiconductor) | 5.1 V ±5% (C-grade), DO-35 through-hole package, Pd = 500 mW | Requires PCB hole drilling; higher power but larger footprint and manual assembly | Select when legacy through-hole design or higher surge energy handling is needed. |
| MMSZ5231B (Diodes Inc.) | 5.1 V ±5%, SOD-123 package, Pd = 500 mW, rd = 17 Ω | Lower dynamic resistance but wider voltage tolerance; same SMT form factor | Prefer when tighter regulation under load variation matters more than absolute VZ accuracy. |
Compared with BZX55-C5V1 and MMSZ5231B, the HZM5.1NB1TR-E offers superior voltage tolerance (±4.3% vs. ±5%) in an ultra-compact MPAK package, making it optimal for new high-density designs where board space and unit-to-unit consistency are prioritized over raw power handling or ultra-low rd.
Availability
HZM5.1NB1TR-E is available at Aetrix Electronics and suitable for microcontroller reset supervision, sensor biasing, ADC reference clamping, and overvoltage protection requiring stable component supply across automotive, industrial, and consumer electronics programs.
Supply support for HZM5.1NB1TR-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 delivering microcontrollers, analog power, and timing solutions for automotive, industrial, and IoT systems - with emphasis on functional safety and long-term product longevity.
The HZM-N Series belongs to Renesas' discrete voltage reference portfolio, engineered specifically for cost-sensitive, space-constrained stabilization tasks in industrial control and embedded subsystems where reliability and grade-specific tolerances matter.
FAQ
What is the exact zener voltage range specified for HZM5.1NB1TR-E?
The HZM5.1NB1TR-E has a guaranteed zener voltage range of 5.14 V to 5.55 V at a test current of 5 mA, corresponding to its B1 grade per the Renesas R07DS0358EJ0600 datasheet. This ±4.3% tolerance is tighter than standard C-grade Zeners and supports precise voltage thresholding without calibration in production.
Does HZM5.1NB1TR-E have a functional NC pin, and how should it be handled on the PCB?
Yes, Pin 1 of the HZM5.1NB1TR-E is a true No Connect (NC) terminal - internally unconnected and electrically isolated. It must remain unconnected on the PCB: no trace routing, no solder mask opening, and no thermal pad connection. Leaving it floating avoids parasitic coupling or unintended current paths in high-impedance reference nodes.
What is the maximum allowable reverse current for HZM5.1NB1TR-E before regulation degrades?
The HZM5.1NB1TR-E specifies a maximum reverse current (IR) of 5 µA at VR = 1.5 V, measured at 25°C. Regulation remains stable up to its rated 5 mA zener test current; operation below 1 mA may increase dynamic resistance, while exceeding 5 mA risks exceeding the 200 mW power limit unless derated per Fig.3 in the datasheet.
Can HZM5.1NB1TR-E replace a TL431 shunt regulator in low-power applications?
The HZM5.1NB1TR-E can serve as a passive replacement for TL431 in fixed-voltage reference roles where adjustable feedback, high current sinking (>100 mA), or temperature-compensated operation is unnecessary. Unlike the TL431, it lacks an internal op-amp and reference, so it provides only basic zener stabilization - ideal for simple reset thresholds or bias points where <5 µA leakage and ±4.3% accuracy suffice.
Is HZM5.1NB1TR-E RoHS compliant and halogen-free?
Yes, HZM5.1NB1TR-E meets RoHS Directive 2011/65/EU requirements and is halogen-free per Renesas' environmental compliance documentation. The MPAK package contains no lead in solderable terminations, and all materials conform to JEDEC J-STD-020 moisture sensitivity level (MSL) 1 - suitable for standard reflow profiles without baking.
HZM5.1NB1TR-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:
- -
HZM5.1NB1TR-E FAQ
1.How can I place an order for HZM5.1NB1TR-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZM5.1NB1TR-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 HZM5.1NB1TR-E reliable?
The price and inventory of HZM5.1NB1TR-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZM5.1NB1TR-E is usually 5 days.
3.What payment methods are accepted for HZM5.1NB1TR-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZM5.1NB1TR-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZM5.1NB1TR-E?
HZM5.1NB1TR-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZM5.1NB1TR-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 HZM5.1NB1TR-E?
For technical support, including HZM5.1NB1TR-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZM5.1NB1TR-E requirements.
6.How does Aetrix verify that HZM5.1NB1TR-E is sourced from the original manufacturer or authorized distributors?
All HZM5.1NB1TR-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 HZM5.1NB1TR-E meets industry standards.
7.What is the process for return or replacement of HZM5.1NB1TR-E?
All HZM5.1NB1TR-E units undergo pre-shipment inspection (PSI). If there is an issue with HZM5.1NB1TR-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 HZM5.1NB1TR-E part is unused and in its original packaging.
Return procedure for HZM5.1NB1TR-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HZM5.1NB1TR-E Tags
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