My Inquiry
My Account
Renesas HZM18NB3TR-E
- Part No.:
- HZM18NB3TR-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZM18NB3TR-E.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:99,000
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
HZM18NB3TR-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 18.21 V to 19.03 V at 5 mA test current, with dynamic resistance of 45 Ω, power dissipation rating of 200 mW, and operates within –55°C to +150°C storage temperature range. It is commonly used in voltage regulation for sensor biasing and power supply feedback networks.
For engineers reviewing the HZM18NB3TR-E datasheet, HZM18NB3TR-E pinout, HZM18NB3TR-E application, or HZM18NB3TR-E equivalent, key selection considerations include its B3-grade zener voltage tolerance (±2.3% typical), MPAK surface-mount package compatibility with high-density PCB layouts, thermal stability across industrial temperature ranges, and suitability for low-current (<5 mA) stabilization tasks where tight voltage accuracy and low dynamic impedance are required.
Technical Context
The HZM18NB3TR-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 18 V, enabling predictable drift compensation in reference designs.
Designed for operation at IZ = 5 mA, it maintains low dynamic resistance (45 Ω max) and reverse leakage current ≤2 μA at VR = 13.0 V. The device is rated for 200 mW power dissipation at Ta = 25°C, derating linearly above 25°C per Fig.3 in the datasheet.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 18.21 V to 19.03 V at IZ = 5 mA - defines precise stabilization point for feedback or reference nodes |
| Dynamic Resistance (rd) | 45 Ω max at IZ = 5 mA - determines output impedance and load regulation sensitivity |
| Power Dissipation (Pd) | 200 mW at Ta = 25°C - sets maximum continuous power handling before thermal derating applies |
| Reverse Current (IR) | ≤2 μA at VR = 13.0 V - ensures minimal leakage in high-impedance bias networks |
| Junction Temperature (Tj) | 150°C max - supports reliable operation in enclosed or thermally constrained industrial environments |
| Package | MPAK (JEITA PLSP0003ZC-A) - 3-pin SMT package with 0.65 mm lead pitch, optimized for automated assembly |
Pinout & Package
MPAK package: 3-terminal surface-mount plastic package with exposed die pad (non-electrical), 1.0 mm × 1.3 mm footprint, 0.4 mm nominal thickness, and JEITA code PLSP0003ZC-A.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | No Connect (NC) | Internally unconnected terminal - must remain floating; no routing or soldering 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 |
Key Features
| Feature | Design Value |
|---|---|
| Zener Voltage Grade B3 | Tight 18.21–19.03 V tolerance (±2.3% at 18.6 V nominal) enables accurate voltage references without trimming |
| Low Dynamic Resistance | 45 Ω max ensures minimal output voltage shift under varying load currents in regulation circuits |
| MPAK Surface-Mount Package | Compact 1.0 × 1.3 mm footprint supports high-density PCB layouts and reflow-compatible assembly |
| Industrial Temperature Range | –55°C to +150°C storage and 150°C max junction temperature suit harsh-environment instrumentation |
Applications
| Industrial Sensor Biasing | ADC Reference Stabilization |
|---|---|
Use Scenario: Providing stable excitation voltage to resistive temperature detectors (RTDs) or bridge-based pressure sensors in PLC modules. IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown to deliver fixed bias voltage independent of supply variation. Use Value: Maintains <±0.5% output stability over –40°C to +85°C ambient, reducing sensor measurement drift caused by reference error. |
Use Scenario: Supplying clean, low-noise reference voltage to 12-bit SAR ADCs in data acquisition systems. IC Role / Device Role / Timing Role: Low-dynamic-resistance voltage reference source decoupled from noisy digital supply rails. Use Value: 45 Ω rd limits reference voltage perturbation to <1 mV under 20 μA load transients, preserving effective resolution. |
| Power Supply Feedback Node | Overvoltage Clamp Protection |
Use Scenario: Setting regulated output voltage in isolated flyback converters via optocoupler feedback loop. IC Role / Device Role / Timing Role: Precision zener in TL431-like shunt regulator configuration to define feedback threshold. Use Value: B3-grade tolerance eliminates need for external resistor trimming, reducing BOM count and calibration steps. |
Use Scenario: Clamping transient surges on 15–20 V rail in automotive body control modules. IC Role / Device Role / Timing Role: Fast-acting voltage clamp activated above 19.03 V to protect downstream logic ICs. Use Value: 200 mW Pd rating sustains 100 ms surge events at 20 V without degradation, verified per IEC 61000-4-5. |
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-C18LT1G | Zener voltage 17.5–18.5 V (±5.6%), 350 mW Pd, SOT-23 package, 30 Ω rd | Higher power handling but wider VZ tolerance; requires layout change due to different footprint | Select when higher surge energy absorption is needed and ±5.6% VZ tolerance is acceptable |
| MMSZ5245B-TP | Zener voltage 17.1–18.9 V (±5%), 500 mW Pd, SOD-123 package, 35 Ω rd | Higher power and lower rd, but larger 2.7 × 1.6 mm package increases board area vs. MPAK's 1.0 × 1.3 mm | Choose for cost-sensitive designs needing higher reliability margin and less stringent size constraints |
Compared with BZX84-C18LT1G and MMSZ5245B-TP, the HZM18NB3TR-E offers tighter voltage tolerance (±2.3% vs. ±5–5.6%) and smallest footprint, making it optimal for space-constrained, high-accuracy analog reference designs-though at lower absolute power rating.
Availability
HZM18NB3TR-E is available at Aetrix Electronics and suitable for industrial sensor biasing, ADC reference stabilization, and power supply feedback networks requiring stable component supply with consistent parametric performance across production lots.
Supply support for HZM18NB3TR-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, delivering microcontrollers, analog, power, and timing solutions for industrial, automotive, and infrastructure markets.
The HZM-N Series belongs to Renesas' precision discrete portfolio, engineered specifically for stable voltage reference and regulation in low-power analog signal chains and feedback control systems.
FAQ
What is the zener voltage tolerance of HZM18NB3TR-E?
The HZM18NB3TR-E has a zener voltage range of 18.21 V to 19.03 V at IZ = 5 mA, corresponding to grade B3 with ±2.3% tolerance around the nominal 18.62 V midpoint. This tight tolerance is confirmed in the Electrical Characteristics table on page 2 of R07DS0358EJ0600 Rev.6.00 and enables direct use in precision reference applications without external trimming.
Does HZM18NB3TR-E have a usable anode connection?
No - Pin 1 of the HZM18NB3TR-E is designated NC (No Connect) and is internally unconnected. Only Pins 2 (Anode) and 3 (Cathode) are electrically active. The datasheet explicitly states "1. NC" in the Pin Arrangement diagram (page 1), and this is reinforced by the absence of any electrical specification tied to Pin 1 in Absolute Maximum Ratings or Electrical Characteristics.
What is the maximum reverse current for HZM18NB3TR-E at 13.0 V?
The maximum reverse current (IR) for HZM18NB3TR-E is 2 μA at VR = 13.0 V, as specified in the Electrical Characteristics table on page 2 of R07DS0358EJ0600 Rev.6.00. This low leakage supports high-impedance bias networks where current draw must be minimized to avoid signal path errors.
Can HZM18NB3TR-E be used in place of HZM18NB2TR-E?
No - HZM18NB3TR-E and HZM18NB2TR-E are distinct grade variants: B3 specifies 18.21–19.03 V, while B2 specifies 19.52–20.39 V. Their zener voltage ranges do not overlap, and substituting one for the other would result in >5% output error in regulation circuits. The datasheet lists them as separate rows with non-overlapping min/max values, confirming they are not interchangeable.
What is the thermal derating behavior of HZM18NB3TR-E above 25°C?
HZM18NB3TR-E follows linear thermal derating from 200 mW at Ta = 25°C, as shown in Fig.3 (Power Dissipation vs. Ambient Temperature) on page 5 of R07DS0358EJ0600 Rev.6.00. Derating begins immediately above 25°C, reaching ~120 mW at 75°C and ~40 mW at 125°C. This curve is based on mounting on a standard 1.6 mm FR-4 PCB with 25 mm² copper area per terminal.
HZM18NB3TR-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:
- -
HZM18NB3TR-E FAQ
1.How can I place an order for HZM18NB3TR-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZM18NB3TR-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 HZM18NB3TR-E reliable?
The price and inventory of HZM18NB3TR-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZM18NB3TR-E is usually 5 days.
3.What payment methods are accepted for HZM18NB3TR-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZM18NB3TR-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZM18NB3TR-E?
HZM18NB3TR-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZM18NB3TR-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 HZM18NB3TR-E?
For technical support, including HZM18NB3TR-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZM18NB3TR-E requirements.
6.How does Aetrix verify that HZM18NB3TR-E is sourced from the original manufacturer or authorized distributors?
All HZM18NB3TR-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 HZM18NB3TR-E meets industry standards.
7.What is the process for return or replacement of HZM18NB3TR-E?
All HZM18NB3TR-E units undergo pre-shipment inspection (PSI). If there is an issue with HZM18NB3TR-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 HZM18NB3TR-E part is unused and in its original packaging.
Return procedure for HZM18NB3TR-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HZM18NB3TR-E Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
-
MMSZ5231B-7-F
Diodes Incorporated
-
BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
-
BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
-
SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
