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Renesas HZM4.7NB2TL-E
- Part No.:
- HZM4.7NB2TL-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZM4.7NB2TL-E.pdf
- Description:
- DIODE ZENER
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Product details
Overview
HZM4.7NB2TL-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 4.7 V (B2 grade: 4.55–4.75 V), with dynamic resistance of 130 Ω at 5 mA, power dissipation up to 200 mW, and operates within –55°C to +150°C storage range. It is used in voltage reference generation for sensor signal conditioning and microcontroller reset circuitry.
For engineers reviewing the HZM4.7NB2TL-E datasheet, HZM4.7NB2TL-E pinout, HZM4.7NB2TL-E application, or HZM4.7NB2TL-E equivalent, key selection considerations include its MPAK package footprint, tight 4.55–4.75 V zener tolerance, 130 Ω dynamic impedance, thermal coefficient behavior near zero crossing (~0 mV/°C), and suitability for space-constrained SMT designs requiring stable low-current regulation.
Technical Context
The HZM4.7NB2TL-E employs a silicon epitaxial planar junction structure optimized for stable reverse-bias breakdown with minimal temperature drift. Its B2 grade specifies a zener voltage window of 4.55 V to 4.75 V at 5 mA test current, with dynamic resistance tightly controlled at ≤130 Ω - critical for maintaining regulation accuracy under varying load conditions.
Designed for surface-mount assembly in high-density PCB layouts, it uses the MPAK (PLSP0003ZC-A) package with three terminals: NC, Anode, and Cathode. The NC pin provides mechanical stability and thermal relief without electrical function, while the anode-cathode polarity enables standard reverse-bias connection in shunt regulator topologies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 4.55–4.75 V at IZ = 5 mA - defines precise clamping threshold for low-voltage reference and overvoltage protection. |
| Dynamic Resistance (rd) | ≤130 Ω at IZ = 5 mA - ensures minimal output voltage variation under small-signal current changes. |
| Power Dissipation (Pd) | 200 mW at Ta = 25°C - sets maximum continuous power handling before thermal derating applies. |
| Junction Temperature (Tj) | 150°C maximum - supports operation in industrial ambient environments with adequate PCB copper thermal relief. |
| Reverse Current (IR) | ≤10 µA at VR = 1.0 V - guarantees low leakage in standby or high-impedance bias networks. |
| Package | MPAK (PLSP0003ZC-A) - 3-terminal SMT package with 1.0 mm × 1.3 mm footprint, optimized for automated placement and reflow. |
Pinout & Package
Package: MPAK (JEITA code PLSP0003ZC-A), 3-terminal surface-mount package with 1.0 mm × 1.3 mm body size, 0.35–0.5 mm lead width, and 0.65 mm terminal length. Designed for high-density PCB layouts and compatible with standard 0.65 mm pitch reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | No Connect (NC) | Mechanical anchor and thermal pad; electrically isolated - must not be connected to any net to avoid parasitic coupling or thermal mismatch. |
| 2 | Anode | Connected to circuit ground or lower potential node in shunt regulator configuration; current flows into cathode during conduction. |
| 3 | Cathode | Connected to regulated voltage node; reverse-biased terminal where zener breakdown occurs to clamp voltage at VZ. |
Key Features
| Feature | Design Value |
|---|---|
| Grade-B2 zener voltage tolerance | ±2.6% (4.55–4.75 V) - enables tighter system-level voltage reference accuracy without external trimming. |
| Low dynamic impedance | 130 Ω max at 5 mA - minimizes output impedance in shunt references, improving PSRR and load regulation. |
| MPAK surface-mount package | 1.0 mm × 1.3 mm footprint with NC pin - supports miniaturized designs and high-volume pick-and-place assembly. |
| Wide operating temperature range | –55°C to +150°C storage; 150°C max junction - suitable for automotive under-hood and industrial control applications. |
| Low leakage current | ≤10 µA at 1.0 V reverse bias - preserves battery life and avoids loading in high-impedance sensor bias networks. |
Applications
| Industrial Sensor Reference | Microcontroller Reset Circuit |
|---|---|
|
Use Scenario: Providing stable 4.7 V reference for analog front-end amplifiers in pressure or temperature transducers. IC Role / Device Role / Timing Role: Shunt voltage reference diode regulating excitation voltage and ADC reference level. Use Value: Tight 4.55–4.75 V tolerance and 130 Ω rd ensure <±0.5% reference stability across temperature and supply variations. |
Use Scenario: Generating a clean, noise-immune reset threshold for 3.3 V or 5 V microcontrollers during power-up and brownout events. IC Role / Device Role / Timing Role: Zener-based reset supervisor input stage, clamping reset line voltage until VCC exceeds threshold. Use Value: Low 10 µA leakage prevents premature discharge of RC timing network; NC pin aids thermal management in compact reset IC layouts. |
| Portable Battery Monitor | LED Driver Bias Network |
|
Use Scenario: Monitoring single-cell Li-ion or alkaline battery voltage via resistive divider into ADC, with zener-clamped input protection. IC Role / Device Role / Timing Role: Input overvoltage clamp protecting ADC input from >4.7 V transients during battery hot-swap or charging spikes. Use Value: 200 mW Pd and 150°C Tj allow safe transient energy absorption without degradation in handheld devices. |
Use Scenario: Setting constant bias current for low-current indicator LEDs in status panels or user interfaces. IC Role / Device Role / Timing Role: Shunt regulator establishing fixed voltage drop across series current-setting resistor. Use Value: Stable 4.7 V VZ with minimal tempco (<0.01 mV/°C near 4.7 V) ensures consistent LED brightness across operating temperature range. |
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 | Same 4.7 V nominal VZ, but ±5% tolerance (4.47–4.94 V); SOT-23 package; 350 mW Pd; no NC pin. | Larger voltage spread reduces reference accuracy; higher Pd allows higher current but requires larger layout area. | Choose when higher power margin is needed and tighter VZ tolerance is not required. |
| MMSZ4704T1G | 4.7 V nominal, ±5% tolerance; SOD-123 package; 500 mW Pd; 170 Ω rd; no NC pin. | Higher dynamic resistance degrades regulation under load; larger package increases board area vs. MPAK. | Prefer for cost-sensitive, non-precision applications where thermal robustness outweighs size constraints. |
Compared with BZX84-C4V7LT1G and MMSZ4704T1G, the HZM4.7NB2TL-E offers superior voltage accuracy (±2.6% vs. ±5%), lower dynamic resistance (130 Ω vs. ≥170 Ω), and a smaller MPAK footprint - making it optimal for space-constrained, precision analog designs where reference stability is critical.
Availability
HZM4.7NB2TL-E is available at Aetrix Electronics and suitable for industrial sensor reference, microcontroller reset circuit, and portable battery monitor applications requiring stable component supply, consistent parametric performance, and RoHS-compliant SMT packaging.
Supply support for HZM4.7NB2TL-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 and power devices, and timing solutions for industrial, automotive, and consumer markets.
The HZM-N Series is part of Renesas' discrete Zener diode portfolio, engineered specifically for high-accuracy voltage stabilization in compact, high-reliability SMT applications - emphasizing tight VZ grading, low dynamic impedance, and thermal resilience.
FAQ
What is the exact zener voltage range for HZM4.7NB2TL-E?
The HZM4.7NB2TL-E has a guaranteed zener voltage range of 4.55 V to 4.75 V at a test current of 5 mA, corresponding to its B2 grade designation per Renesas datasheet R07DS0358EJ0600. This 2.6% tolerance window ensures predictable clamping behavior in precision reference and protection circuits where tighter regulation than standard ±5% Zeners is required. The HZM4.7NB2TL-E achieves this via process-controlled epitaxial junction formation.
Does HZM4.7NB2TL-E have a functional third pin?
No - Pin 1 of the HZM4.7NB2TL-E is designated NC (No Connect) and serves only as a mechanical anchor and thermal relief pad. It is electrically isolated and must remain unconnected in the PCB layout to prevent unintended coupling or thermal stress. The active terminals are Pin 2 (Anode) and Pin 3 (Cathode), configured for standard reverse-bias shunt operation. This NC pin distinguishes the MPAK package from 2-pin alternatives like SOD-123 or SOT-23.
What is the maximum power dissipation of HZM4.7NB2TL-E and how does it derate with temperature?
The HZM4.7NB2TL-E has a maximum power dissipation of 200 mW at ambient temperature (Ta) = 25°C, as specified in its Absolute Maximum Ratings table. Derating begins linearly above 25°C, following the curve in Figure 3 of the datasheet: at 75°C ambient, usable Pd drops to ~120 mW; at 125°C, it falls to ~40 mW. Proper PCB copper area under the MPAK package is essential to maintain junction temperature below 150°C under sustained load. The HZM4.7NB2TL-E's thermal design relies on this defined derating profile.
Can HZM4.7NB2TL-E replace standard 4.7 V Zener diodes like 1N4732A in existing designs?
The HZM4.7NB2TL-E is not a direct drop-in replacement for through-hole diodes like 1N4732A due to its MPAK SMT package, NC pin, and tighter B2-grade voltage tolerance (4.55–4.75 V vs. 1N4732A's 4.47–4.94 V). While electrically compatible in shunt regulator function, PCB layout revision is required to accommodate the 1.0 mm × 1.3 mm footprint and 3-terminal pinout. The HZM4.7NB2TL-E offers improved accuracy and thermal performance but demands physical redesign - not just component substitution.
Is HZM4.7NB2TL-E suitable for automotive applications?
The HZM4.7NB2TL-E is rated for storage from –55°C to +150°C and junction temperature up to 150°C, meeting under-hood thermal requirements. However, Renesas classifies the HZM-N Series as "Standard" quality grade - intended for industrial, office, and consumer equipment, not automotive safety-critical systems. For AEC-Q200 qualified automotive use, Renesas offers separate automotive-grade Zener families. The HZM4.7NB2TL-E may be used in non-safety automotive subsystems (e.g., infotainment power rails) only after full qualification by the end customer.
HZM4.7NB2TL-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:
- -
HZM4.7NB2TL-E FAQ
1.How can I place an order for HZM4.7NB2TL-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZM4.7NB2TL-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 HZM4.7NB2TL-E reliable?
The price and inventory of HZM4.7NB2TL-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZM4.7NB2TL-E is usually 5 days.
3.What payment methods are accepted for HZM4.7NB2TL-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZM4.7NB2TL-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZM4.7NB2TL-E?
HZM4.7NB2TL-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZM4.7NB2TL-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 HZM4.7NB2TL-E?
For technical support, including HZM4.7NB2TL-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZM4.7NB2TL-E requirements.
6.How does Aetrix verify that HZM4.7NB2TL-E is sourced from the original manufacturer or authorized distributors?
All HZM4.7NB2TL-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 HZM4.7NB2TL-E meets industry standards.
7.What is the process for return or replacement of HZM4.7NB2TL-E?
All HZM4.7NB2TL-E units undergo pre-shipment inspection (PSI). If there is an issue with HZM4.7NB2TL-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 HZM4.7NB2TL-E part is unused and in its original packaging.
Return procedure for HZM4.7NB2TL-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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