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Renesas HZM4.7NB3TR-E
- Part No.:
- HZM4.7NB3TR-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZM4.7NB3TR-E.pdf
- Description:
- DIODE ZENER
- Quantity:
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Inventory:30,000
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Product details
Overview
HZM4.7NB3TR-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 4.7 V (min 4.69 V, max 4.90 V) at 5 mA test current, with dynamic resistance of 130 Ω, power dissipation rating of 200 mW, and operates within –55°C to +150°C storage temperature range. It is commonly used in reference voltage generation for ADCs, LDO feedback networks, and overvoltage protection clamping circuits.
For engineers reviewing the HZM4.7NB3TR-E datasheet, HZM4.7NB3TR-E pinout, HZM4.7NB3TR-E application, or HZM4.7NB3TR-E equivalent, key selection considerations include its B3-grade voltage tolerance (±2.2% typical), MPAK surface-mount package compatibility with high-density PCB layouts, thermal stability across industrial temperature ranges, and low reverse leakage (<10 µA at 1.0 V).
Technical Context
The HZM4.7NB3TR-E employs a silicon epitaxial planar junction structure optimized for stable zener breakdown behavior under DC and pulsed conditions (40 ms pulse width). Its zener voltage exhibits a positive temperature coefficient near zero crossing (~0.02 mV/°C at 4.7 V), minimizing drift in mid-range voltage references.
Designed for surface-mount assembly, it uses a three-terminal MPAK (JEITA PLSP0003ZC-A) package with terminal configuration: Pin 1 = NC (no connection), Pin 2 = Anode, Pin 3 = Cathode. The device is rated for 150°C maximum junction temperature and supports operation up to 200 mW power dissipation at 25°C ambient, derating linearly above that point.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 4.69 V to 4.90 V at IZ = 5 mA - defines tight regulation window for 4.7 V reference applications |
| Dynamic Resistance (rd) | 130 Ω max at IZ = 5 mA - determines output impedance and load regulation sensitivity |
| Reverse Current (IR) | ≤10 µA at VR = 1.0 V - ensures minimal standby leakage in battery-powered systems |
| Power Dissipation (Pd) | 200 mW at Ta = 25°C - sets maximum continuous DC power handling before thermal derating |
| Junction Temperature (Tj) | 150°C max - enables reliable operation in enclosed industrial enclosures without forced cooling |
| Storage Temperature | –55°C to +150°C - supports extended environmental qualification for automotive and industrial deployments |
| Package | MPAK (PLSP0003ZC-A) - 3-pin SMT package with 0.65 mm lead pitch, footprint-optimized for high-density routing |
Pinout & Package
MPAK package (JEITA code PLSP0003ZC-A) is a compact 3-terminal surface-mount device measuring 2.7 × 1.35 × 0.95 mm (L × W × H), with gull-wing leads and no internal die bonding to Pin 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | No Connection (NC) | Electrically isolated terminal; must remain unconnected on PCB to avoid parasitic coupling or mechanical stress |
| 2 | Anode | Forward-biased terminal during conduction; connects to lower-potential node in reverse-biased zener configuration |
| 3 | Cathode | Zener breakdown terminal; connects to higher-potential rail to enable regulated voltage drop across device |
Key Features
| Feature | Design Value |
|---|---|
| Grade-B3 voltage tolerance | ±2.2% zener voltage accuracy (4.69–4.90 V) - enables tighter system-level voltage margining without trimming |
| Low dynamic impedance | 130 Ω max at 5 mA - improves line/load regulation in feedback loops and reference buffers |
| High-temperature operation | 150°C max junction temperature - supports use in thermally constrained environments like motor control PCBs |
| MPAK surface-mount package | 0.65 mm lead pitch, 2.7 mm length - compatible with standard 0805–1206 reflow profiles and AOI inspection |
| Pulse-tested characterization | Specified using 40 ms pulses - ensures parameter validity under transient overload conditions common in ESD protection paths |
Applications
| ADC Reference Voltage Source | LDO Feedback Node Clamp |
|---|---|
Use Scenario: Provides stable 4.7 V reference for 12-bit SAR ADCs in sensor signal conditioning modules. IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown to generate fixed bias voltage for ADC internal reference buffer. Use Value: Tight 4.69–4.90 V tolerance minimizes full-scale error; low dynamic resistance reduces noise coupling into reference input. |
Use Scenario: Clamps feedback voltage node in adjustable 3.3 V LDO designs using resistor dividers. IC Role / Device Role / Timing Role: Precision shunt element that fixes upper divider node voltage to stabilize output regulation setpoint. Use Value: Enables accurate 3.3 V output despite input ripple; B3 grade eliminates need for external trimming resistors. |
| Overvoltage Protection Clamp | Microcontroller Reset Circuit |
Use Scenario: Protects 5 V logic inputs against transient surges exceeding 5.5 V in industrial I/O modules. IC Role / Device Role / Timing Role: Fast-acting shunt clamp that conducts excess energy to ground when voltage exceeds 4.90 V. Use Value: Low 130 Ω impedance ensures rapid clamping response; 200 mW rating handles repetitive 100 ns transients per IEC 61000-4-4. |
Use Scenario: Generates clean reset signal for ARM Cortex-M0+ MCUs during brown-out conditions. IC Role / Device Role / Timing Role: Zener-based threshold detector feeding RC delay network to reset pin. Use Value: Stable 4.7 V knee voltage ensures consistent reset assertion at 4.69 V, independent of supply ramp rate. |
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-C4V7LT1G | 4.7 V ±5% (SOD-323, 350 mW); higher power but looser tolerance | Less precise regulation; better suited for general-purpose clamping than reference use | Choose when cost or availability outweighs voltage accuracy requirements |
| MMSZ4703T1G | 4.7 V ±5% (SOD-123, 500 mW); larger footprint, higher Pd, same tolerance grade | Higher surge capability but incompatible MPAK land pattern; requires PCB redesign | Prefer only if legacy board reuse mandates SOD-123 or >200 mW headroom is mandatory |
Compared with BZX84-C4V7LT1G and MMSZ4703T1G, the HZM4.7NB3TR-E offers superior voltage accuracy (±2.2% vs. ±5%) and smaller MPAK footprint-critical for space-constrained IoT sensor nodes-while maintaining adequate 200 mW dissipation for most low-current reference and clamp roles.
Availability
HZM4.7NB3TR-E is available at Aetrix Electronics and suitable for industrial sensor interfaces, embedded MCU reset circuits, and analog front-end voltage references requiring stable component supply, consistent parametric performance, and long-term obsolescence management.
Supply support for HZM4.7NB3TR-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 headquartered in Japan, specializing in microcontrollers, analog power devices, and timing solutions for industrial, automotive, and infrastructure markets.
The HZM-N Series belongs to Renesas' precision discrete portfolio, engineered specifically for stable, low-drift voltage reference and clamping in space- and power-constrained applications where tight zener voltage tolerance and thermal reliability are critical.
FAQ
What is the exact zener voltage range specified for HZM4.7NB3TR-E?
The HZM4.7NB3TR-E has a guaranteed zener voltage range of 4.69 V to 4.90 V when tested at IZ = 5 mA and Ta = 25°C. This B3-grade specification reflects ±2.2% tolerance around the nominal 4.7 V rating, confirmed in Renesas' R07DS0358EJ0600 datasheet, page 2. The HZM4.7NB3TR-E is not characterized for tighter tolerances outside this range.
Is Pin 1 of HZM4.7NB3TR-E electrically functional or a dummy pad?
Pin 1 of the HZM4.7NB3TR-E is a No Connection (NC) terminal - it is electrically isolated from the die and serves only as a mechanical anchor point. Per the datasheet pin arrangement diagram (page 1), Pin 1 must remain unconnected on the PCB layout to prevent unintended coupling or thermal stress. The HZM4.7NB3TR-E relies solely on Pins 2 (Anode) and 3 (Cathode) for circuit functionality.
Can HZM4.7NB3TR-E be used in place of a 5.0 V zener diode?
No - the HZM4.7NB3TR-E is strictly a 4.7 V zener device with a maximum specified VZ of 4.90 V. It does not meet 5.0 V regulation requirements. For 5.0 V applications, Renesas offers HZM5.1N variants (e.g., HZM5.1NB3TR-E, VZ = 5.14–5.37 V). Substituting HZM4.7NB3TR-E in a 5.0 V design would result in under-regulation and potential system malfunction.
What is the maximum allowable reverse current for HZM4.7NB3TR-E at 1.0 V?
The HZM4.7NB3TR-E is rated for a maximum reverse current (IR) of 10 µA when biased at VR = 1.0 V and Ta = 25°C, as specified in the Electrical Characteristics table (page 2 of R07DS0358EJ0600). This low leakage supports energy-efficient operation in always-on monitoring circuits and extends battery life in portable HZM4.7NB3TR-E implementations.
Does HZM4.7NB3TR-E comply with RoHS and halogen-free standards?
Yes - the HZM4.7NB3TR-E conforms to the EU RoHS Directive (2011/65/EU) and is halogen-free, as confirmed in Renesas' environmental compliance documentation referenced in the datasheet colophon (page 6). The device carries no restricted substances above threshold limits and is suitable for environmentally regulated industrial and consumer applications requiring HZM4.7NB3TR-E's voltage stabilization function.
HZM4.7NB3TR-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:
- -
HZM4.7NB3TR-E FAQ
1.How can I place an order for HZM4.7NB3TR-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZM4.7NB3TR-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 HZM4.7NB3TR-E reliable?
The price and inventory of HZM4.7NB3TR-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZM4.7NB3TR-E is usually 5 days.
3.What payment methods are accepted for HZM4.7NB3TR-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZM4.7NB3TR-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZM4.7NB3TR-E?
HZM4.7NB3TR-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZM4.7NB3TR-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 HZM4.7NB3TR-E?
For technical support, including HZM4.7NB3TR-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZM4.7NB3TR-E requirements.
6.How does Aetrix verify that HZM4.7NB3TR-E is sourced from the original manufacturer or authorized distributors?
All HZM4.7NB3TR-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 HZM4.7NB3TR-E meets industry standards.
7.What is the process for return or replacement of HZM4.7NB3TR-E?
All HZM4.7NB3TR-E units undergo pre-shipment inspection (PSI). If there is an issue with HZM4.7NB3TR-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 HZM4.7NB3TR-E part is unused and in its original packaging.
Return procedure for HZM4.7NB3TR-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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