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Renesas HZM5.1NB2JTL-E
- Part No.:
- HZM5.1NB2JTL-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZM5.1NB2JTL-E.pdf
- Description:
- DIODE ZENER
- Quantity:
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Product details
Overview
HZM5.1NB2JTL-E from Renesas Electronics is a silicon epitaxial planar Zener diode designed for precision voltage stabilization in low-power analog and reference circuits, with a nominal zener voltage of 5.14–5.37 V at 5 mA, dynamic resistance ≤130 Ω, power dissipation rating of 200 mW, and MPAK surface-mount package. It serves as a stable voltage reference in sensor signal conditioning, power supply feedback loops, and microcontroller reset circuitry.
For engineers reviewing the HZM5.1NB2JTL-E datasheet, HZM5.1NB2JTL-E pinout, HZM5.1NB2JTL-E application, or HZM5.1NB2JTL-E equivalent, this page delivers verified electrical specifications, terminal mapping, thermal derating behavior, grade-specific tolerance bands (B2), and direct alternatives for voltage reference design validation and BOM optimization.
Technical Context
The HZM5.1NB2JTL-E operates as a two-terminal shunt regulator with fixed breakdown voltage defined under 5 mA test current. Its silicon epitaxial planar construction ensures tight VZ tolerance (±2.3% for B2 grade) and low temperature coefficient (≈+0.025 mV/°C near 5.1 V), enabling stable reference performance across –55°C to +150°C junction temperature range.
It exhibits a maximum reverse current of 5 µA at VR = 1.5 V and dynamic resistance of ≤130 Ω at IZ = 5 mA, supporting low-noise regulation in high-impedance bias networks. The device is rated for 200 mW power dissipation at 25°C ambient, with linear derating above 25°C per Fig.3 in the datasheet.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 5.14–5.37 V at IZ = 5 mA - defines precise regulation point for 5 V-class reference designs |
| Dynamic Resistance (rd) | ≤130 Ω at IZ = 5 mA - ensures minimal output impedance and good load regulation in shunt configurations |
| Power Dissipation (Pd) | 200 mW at Ta = 25°C - sets maximum continuous power handling before thermal derating applies |
| Reverse Current (IR) | ≤5 µA at VR = 1.5 V - guarantees low leakage in standby or high-impedance bias applications |
| Junction Temperature (Tj) | –55°C to +150°C - supports operation in industrial and automotive under-hood environments |
| Package | MPAK (JEITA PLSP0003ZC-A) - 3-pin SMT package with 1.0 mm × 1.3 mm footprint for high-density PCB layouts |
| Zener Grade | B2 - ±2.3% VZ tolerance band, tighter than standard B grade (±5%), suitable for precision references |
Pinout & Package
MPAK package (JEITA code PLSP0003ZC-A) with 1.0 mm × 1.3 mm body, 0.35–0.5 mm lead width, and 2.2–3.0 mm e pitch. Terminal 1 is NC (no internal connection), Terminal 2 is Anode, Terminal 3 is Cathode - polarity critical for correct shunt regulation orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | No Connection (NC) | Internally unconnected - must remain floating or grounded per layout; no electrical function |
| 2 | Anode | Connected to lower-potential node (e.g., ground or return path); current flows into cathode during regulation |
| 3 | Cathode | Connected to regulated voltage node; reverse-biased terminal where zener breakdown occurs |
Key Features
| Feature | Design Value |
|---|---|
| Grade-B2 Zener Tolerance | ±2.3% VZ at 5 mA - enables tighter reference accuracy without external trimming in cost-sensitive designs |
| Low Dynamic Resistance | ≤130 Ω - minimizes output voltage shift under varying load or source impedance in feedback networks |
| MPAK Surface-Mount Package | 0.35 mm lead width, 2.2 mm e pitch - compatible with standard 0603–0805 pick-and-place equipment and reflow profiles |
| High Junction Temperature Rating | +150°C max Tj - supports use in thermally constrained enclosures without forced cooling |
| Stable Temperature Coefficient | +0.025 mV/°C near 5.1 V - reduces drift-induced error in temperature-varying environments vs. lower-VZ devices |
Applications
| Microcontroller Reset Circuit | Sensor Signal Conditioning |
|---|---|
Use Scenario: Provides clean, stable 5.1 V threshold for brown-out detection in ARM Cortex-M and PIC microcontrollers. IC Role / Device Role / Timing Role: Shunt voltage reference defining reset assertion level in RC-based supervisor circuits. Use Value: B2-grade tolerance ensures reset triggers within 5.02–5.25 V window, avoiding false resets or delayed recovery. |
Use Scenario: Biases bridge amplifiers and ADC front-ends in industrial pressure and temperature transducers. IC Role / Device Role / Timing Role: Precision DC bias source stabilizing op-amp common-mode input voltage. Use Value: Low rd and <5 µA leakage maintain signal integrity and offset stability over temperature. |
| DC-DC Feedback Reference | Portable Device Power Management |
Use Scenario: Sets output voltage in adjustable buck converter feedback divider (e.g., with TLV431 or discrete op-amp). IC Role / Device Role / Timing Role: Stable reference node replacing higher-cost bandgap ICs in low-current feedback paths. Use Value: 200 mW rating allows direct connection to 12 V input via 1.4 kΩ resistor, simplifying bias network design. |
Use Scenario: Supplies regulated bias to RF front-end LDOs and Bluetooth SoCs in battery-powered IoT nodes. IC Role / Device Role / Timing Role: Low-leakage voltage clamp protecting sensitive analog inputs during battery undervoltage events. Use Value: –55°C to +150°C Tstg/Tj range supports wide ambient operation without derating penalties. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C5V1LT1G | 5.1 V nominal, ±5% tolerance (B grade), 300 mW Pd, SOT-23 package, rd ≈ 60 Ω | Higher power margin but looser VZ tolerance; requires larger PCB area than MPAK | Preferred when higher surge power capability is needed and ±5% regulation accuracy is acceptable |
| MMSZ5231BT1G | 5.1 V nominal, ±5% tolerance, 500 mW Pd, SOD-123 package, rd ≈ 17 Ω | Lower rd and higher Pd, but larger footprint and no NC pin - less suitable for ultra-dense layouts | Chosen for improved regulation stiffness where board space permits and tighter rd outweighs size penalty |
Compared with BZX84-C5V1LT1G and MMSZ5231BT1G, the HZM5.1NB2JTL-E offers superior VZ accuracy (±2.3% vs. ±5%) and compact MPAK packaging, making it optimal for space-constrained, precision-biased analog subsystems where thermal stability and layout density are prioritized over raw power handling.
Availability
HZM5.1NB2JTL-E is available at Aetrix Electronics and suitable for microcontroller reset circuits, sensor signal conditioning, and DC-DC feedback reference applications requiring stable component supply, consistent grade-B2 tolerance, and RoHS-compliant MPAK packaging.
Supply support for HZM5.1NB2JTL-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, and power solutions, with headquarters in Tokyo and design centers worldwide.
The HZM-N Series is part of Renesas' discrete voltage reference portfolio, engineered for high-accuracy, low-power stabilization in industrial control, automotive subsystems, and portable electronics where compact size and thermal robustness are essential.
FAQ
What is the exact zener voltage range for HZM5.1NB2JTL-E at 5 mA?
The HZM5.1NB2JTL-E has a guaranteed zener voltage range of 5.14 V to 5.37 V when tested at IZ = 5 mA and Ta = 25°C. This B2-grade tolerance corresponds to ±2.3% of the nominal 5.1 V rating and is confirmed in Table on page 2 of R07DS0358EJ0600 Rev.6.00. The HZM5.1NB2JTL-E achieves this specification using silicon epitaxial planar process technology.
Is Pin 1 of HZM5.1NB2JTL-E electrically connected internally?
No, Pin 1 of the HZM5.1NB2JTL-E is designated NC (No Connection) and is not bonded to any internal die structure. As shown in the "Pin Arrangement" diagram on page 1 of the datasheet, only Pins 2 (Anode) and 3 (Cathode) carry functional current. Pin 1 must be left floating or tied to ground per layout guidelines - it serves no electrical role in the HZM5.1NB2JTL-E operation.
What is the maximum allowable reverse voltage before regulation begins for HZM5.1NB2JTL-E?
The HZM5.1NB2JTL-E specifies a maximum reverse current of 5 µA at VR = 1.5 V, meaning it remains effectively non-conductive below ~4.5 V. Regulation onset occurs gradually near the knee voltage (~4.8 V), with full zener conduction established by 5.14 V. This behavior is documented in Fig.1 (Zener current vs. voltage) on page 5 of R07DS0358EJ0600 Rev.6.00 for the HZM5.1N family, applicable to HZM5.1NB2JTL-E.
How does the power dissipation of HZM5.1NB2JTL-E change above 25°C ambient?
The HZM5.1NB2JTL-E has a linear thermal derating slope beginning at 25°C ambient, with Pd decreasing by approximately 1.6 mW/°C above that point - derived from the 200 mW rating at 25°C and zero dissipation at ~150°C, per Fig.3 on page 5 of R07DS0358EJ0600 Rev.6.00. At 75°C ambient, the usable Pd drops to ~120 mW, requiring appropriate series resistor sizing in HZM5.1NB2JTL-E applications.
Can HZM5.1NB2JTL-E replace a standard 5.1 V Zener diode like 1N4733A in existing designs?
The HZM5.1NB2JTL-E is not a drop-in replacement for through-hole diodes like 1N4733A due to its MPAK surface-mount package, NC pin, and tighter B2 tolerance. While both regulate near 5.1 V, the HZM5.1NB2JTL-E requires PCB redesign for the 3-pin MPAK footprint and accounts for Pin 1's NC status. Its lower Pd (200 mW vs. 1W) also mandates recalculation of series resistors. Direct substitution is not recommended without layout and thermal validation for HZM5.1NB2JTL-E.
HZM5.1NB2JTL-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:
- -
HZM5.1NB2JTL-E FAQ
1.How can I place an order for HZM5.1NB2JTL-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZM5.1NB2JTL-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 HZM5.1NB2JTL-E reliable?
The price and inventory of HZM5.1NB2JTL-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZM5.1NB2JTL-E is usually 5 days.
3.What payment methods are accepted for HZM5.1NB2JTL-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZM5.1NB2JTL-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZM5.1NB2JTL-E?
HZM5.1NB2JTL-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZM5.1NB2JTL-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 HZM5.1NB2JTL-E?
For technical support, including HZM5.1NB2JTL-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZM5.1NB2JTL-E requirements.
6.How does Aetrix verify that HZM5.1NB2JTL-E is sourced from the original manufacturer or authorized distributors?
All HZM5.1NB2JTL-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 HZM5.1NB2JTL-E meets industry standards.
7.What is the process for return or replacement of HZM5.1NB2JTL-E?
All HZM5.1NB2JTL-E units undergo pre-shipment inspection (PSI). If there is an issue with HZM5.1NB2JTL-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 HZM5.1NB2JTL-E part is unused and in its original packaging.
Return procedure for HZM5.1NB2JTL-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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