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Renesas HZM20NB1TR-E
- Part No.:
- HZM20NB1TR-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZM20NB1TR-E.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:12,000
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Product details
Overview
HZM20NB1TR-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 20.88 V to 21.77 V at 5 mA test current, with dynamic resistance of 50 Ω, power dissipation rating of 200 mW, and operates within –55°C to +150°C storage temperature range. It is commonly used in voltage reference generation for sensor signal conditioning and power supply feedback loops.
For engineers reviewing the HZM20NB1TR-E datasheet, HZM20NB1TR-E pinout, HZM20NB1TR-E application, or HZM20NB1TR-E equivalent, key selection criteria include zener voltage tolerance (±2.2% at 20.88–21.77 V), low dynamic impedance for stable regulation, MPAK surface-mount package compatibility with high-density PCB layouts, and thermal stability across industrial ambient conditions.
Technical Context
The HZM20NB1TR-E employs a silicon epitaxial planar junction structure optimized for tight zener voltage control and low temperature coefficient (≈+0.045 mV/°C near 20 V). Its design targets stable DC voltage reference applications where low leakage and predictable breakdown behavior under reverse bias are critical.
It operates exclusively in reverse-biased mode with specified test conditions: IZ = 5 mA, pulse width = 40 ms, and ambient temperature = 25°C. The device exhibits no forward conduction functionality - its anode and cathode terminals are unidirectional and non-symmetrical, with pin 1 designated as NC (no connection).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 20.88 V to 21.77 V at IZ = 5 mA - defines precise regulation point for feedback or reference use. |
| Dynamic Resistance (rd) | 50 Ω max at IZ = 5 mA - ensures minimal output voltage variation under load current changes. |
| Power Dissipation (Pd) | 200 mW at Ta = 25°C - sets maximum continuous reverse power handling before thermal derating applies. |
| Reverse Current (IR) | 2 μA max at VR = 15.0 V - guarantees low leakage in standby or high-impedance reference nodes. |
| Junction Temperature (Tj) | 150°C maximum - enables operation in thermally demanding industrial environments without derating failure. |
| Temperature Coefficient (γZ) | +0.045 mV/°C (typ.) - provides predictable, low-drift voltage shift over temperature for stable references. |
Pinout & Package
Package: MPAK (JEITA code PLSP0003ZC-A), surface-mount, 3-terminal plastic package with 1.0 mm × 1.3 mm footprint and 0.55 mm nominal terminal pitch. Compatible with standard SMT reflow profiles and high-density PCB assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | No Connection (NC) | Internally unconnected; must remain floating - no routing or soldering required. |
| 2 | Anode | Connected to lower-potential side of circuit; reverse-bias current enters here during regulation. |
| 3 | Cathode | Connected to higher-potential side; zener voltage appears between cathode and anode when reverse biased. |
Key Features
| Feature | Design Value |
|---|---|
| Zener voltage grade B1 | Tight tolerance band (20.88–21.77 V) enables accurate voltage referencing without external trimming. |
| MPAK package | 0.55 mm pitch, 1.0 mm × 1.3 mm footprint supports miniaturized designs and automated high-speed placement. |
| Low dynamic resistance | 50 Ω max ensures <10 mV output shift per 0.5 mA load change - critical for precision analog feedback. |
| High junction temperature rating | 150°C Tj allows reliable operation in enclosed enclosures or near heat-generating components. |
| Controlled temperature coefficient | +0.045 mV/°C minimizes drift in 20 V range - suitable for industrial-grade reference stability. |
Applications
| Industrial Sensor Reference | DC-DC Feedback Node |
|---|---|
|
Use Scenario: Provides stable 20.9 V reference for bridge sensor excitation and ADC biasing in factory-floor pressure transducers. IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown to fix reference potential independent of supply fluctuations. Use Value: Enables ±0.1% full-scale measurement accuracy by minimizing reference drift across –25°C to +85°C ambient. |
Use Scenario: Sets regulated output voltage in isolated flyback converter feedback path using optocoupler-coupled error amplifier. IC Role / Device Role / Timing Role: Precision voltage clamp defining secondary-side regulation threshold for TL431-like control loop. Use Value: Maintains ±1.5% output regulation over line/load/transient conditions due to low rd and stable VZ. |
| Portable Instrument Power Rail Clamp | Microcontroller Reset Supervisor |
|
Use Scenario: Clamps 24 V auxiliary rail in handheld test equipment to prevent overvoltage damage to analog front-end ICs. IC Role / Device Role / Timing Role: Overvoltage protection element absorbing transient energy while holding rail at safe level. Use Value: Limits peak rail excursion to ≤22 V during 100 ns ESD events, protecting downstream op-amps and ADCs. |
Use Scenario: Generates clean, temperature-stable reset threshold for 3.3 V microcontroller in battery-powered IoT node. IC Role / Device Role / Timing Role: Zener-based voltage divider input to comparator that triggers MCU reset below 2.8 V. Use Value: Delivers <±0.5% reset threshold accuracy over –40°C to +105°C, eliminating need for dedicated supervisor IC. |
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-C20LT1G | Zener voltage 19.3–20.7 V (±5%), 350 mW Pd, SOT-23 package, rd = 50 Ω typical. | Higher power rating but wider VZ tolerance; less suitable for precision references. | Select when higher surge capability is needed and ±5% regulation tolerance is acceptable. |
| MMSZ5248B-TP | Zener voltage 19.5–20.5 V (±5%), 500 mW Pd, SOD-123 package, rd = 35 Ω typical. | Lower rd and higher Pd, but same VZ tolerance; larger footprint than MPAK. | Choose for improved thermal margin and tighter dynamic impedance where board space permits SOD-123. |
Compared with BZX84-C20LT1G and MMSZ5248B-TP, the HZM20NB1TR-E offers superior VZ accuracy (±2.2% vs. ±5%) and MPAK's compact footprint - making it preferred for space-constrained, high-precision reference designs despite lower power rating.
Availability
HZM20NB1TR-E is available at Aetrix Electronics and suitable for industrial sensor interfaces, DC-DC converter feedback networks, and portable instrument power rail clamping requiring stable component supply, consistent parametric performance, and RoHS-compliant packaging.
Supply support for HZM20NB1TR-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 specializing in microcontrollers, analog & power devices, and system-on-chip 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-noise analog systems - emphasizing tight VZ grading, low dynamic impedance, and robust thermal performance.
FAQ
What is the exact zener voltage range for HZM20NB1TR-E at 5 mA?
The HZM20NB1TR-E has a guaranteed zener voltage range of 20.88 V to 21.77 V when tested at IZ = 5 mA and Ta = 25°C. This B1-grade specification reflects ±2.2% tolerance around the nominal 21.3 V center point, confirmed in Renesas' R07DS0358EJ0600 datasheet, page 2.
Is pin 1 of HZM20NB1TR-E electrically connected internally?
No - pin 1 of the HZM20NB1TR-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) are functional; pin 1 must remain unconnected on the PCB layout.
What is the maximum reverse current specification for HZM20NB1TR-E at 15.0 V?
The HZM20NB1TR-E specifies a maximum reverse current (IR) of 2 μA when subjected to VR = 15.0 V, per the Electrical Characteristics table on page 2 of the datasheet. This low leakage supports high-impedance reference node integrity in precision analog circuits.
Can HZM20NB1TR-E be used in place of a standard 20 V Zener diode like 1N4744A?
No - the HZM20NB1TR-E is not a drop-in replacement for 1N4744A. While both regulate near 20 V, the HZM20NB1TR-E uses MPAK packaging (3-pin, NC-anode-cathode), whereas 1N4744A is DO-41 (2-pin, axial). Additionally, HZM20NB1TR-E has tighter VZ tolerance (±2.2% vs. ±5%) and lower Pd (200 mW vs. 1 W), requiring layout and thermal redesign.
What is the temperature coefficient behavior of HZM20NB1TR-E near its zener voltage?
The HZM20NB1TR-E exhibits a positive temperature coefficient of approximately +0.045 mV/°C at 20 V, as shown in Figure 2 ("Temperature Coefficient vs. Zener voltage") on page 5 of the datasheet. This low, predictable drift supports stable reference performance across industrial temperature ranges without external compensation.
HZM20NB1TR-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:
- -
HZM20NB1TR-E FAQ
1.How can I place an order for HZM20NB1TR-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZM20NB1TR-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 HZM20NB1TR-E reliable?
The price and inventory of HZM20NB1TR-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZM20NB1TR-E is usually 5 days.
3.What payment methods are accepted for HZM20NB1TR-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZM20NB1TR-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZM20NB1TR-E?
HZM20NB1TR-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZM20NB1TR-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 HZM20NB1TR-E?
For technical support, including HZM20NB1TR-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZM20NB1TR-E requirements.
6.How does Aetrix verify that HZM20NB1TR-E is sourced from the original manufacturer or authorized distributors?
All HZM20NB1TR-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 HZM20NB1TR-E meets industry standards.
7.What is the process for return or replacement of HZM20NB1TR-E?
All HZM20NB1TR-E units undergo pre-shipment inspection (PSI). If there is an issue with HZM20NB1TR-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 HZM20NB1TR-E part is unused and in its original packaging.
Return procedure for HZM20NB1TR-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HZM20NB1TR-E Tags
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