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Renesas HZM24NB1TR-E
- Part No.:
- HZM24NB1TR-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZM24NB1TR-E.pdf
- Description:
- DIODE ZENER
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Inventory:75,000
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Product details
Overview
HZM24NB1TR-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 25.0 V (min 24.54 V, max 25.57 V) at 5 mA test current, with dynamic resistance of 60 Ω, power dissipation rating of 200 mW, and operates within –55°C to +150°C storage temperature range. It is used in voltage reference generation for sensor signal conditioning and power supply feedback loops.
For engineers reviewing the HZM24NB1TR-E datasheet, HZM24NB1TR-E pinout, HZM24NB1TR-E application, or HZM24NB1TR-E equivalent, this page provides verified electrical specifications, MPAK package details, thermal behavior, grade-specific tolerance bands, and validated alternative parts for voltage reference design and replacement sourcing.
Technical Context
The HZM24NB1TR-E belongs to the HZM-N Series, a family of surface-mount Zener diodes optimized for stable voltage regulation in compact, high-density PCB layouts. Its epitaxial planar construction ensures tight zener voltage tolerance (±2.1% for B1 grade), low temperature coefficient (≈+0.07 mV/°C at 24 V), and repeatable breakdown characteristics under pulsed test conditions (Pw = 40 ms).
It functions exclusively as a two-terminal shunt regulator - no control logic, no active circuitry - relying on reverse-biased junction conduction. The device requires external current limiting and is rated for 2 mA minimum reverse current to maintain regulation, with maximum reverse current limited to 2 μA at VR = 19.0 V per datasheet test condition.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 24.54 V min / 25.57 V max at IZ = 5 mA - defines stable regulation window for reference design |
| Dynamic Resistance (rd) | 60 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 before thermal derating applies |
| Reverse Current (IR) | 2 μA max at VR = 19.0 V - specifies leakage level below knee voltage, critical for low-power standby |
| Junction Temperature (Tj) | 150°C max - constrains thermal design margin when mounted on standard FR-4 PCB |
| Temperature Coefficient (γZ) | +0.07 mV/°C (typ.) - quantifies drift rate over operating temperature, enabling compensation modeling |
| Package | MPAK (JEITA PLSP0003ZC-A) - 3-pin SMT package with NC, anode, cathode; footprint compatible with SC-59A |
Pinout & Package
MPAK package (JEITA code PLSP0003ZC-A) is a 3-pin surface-mount plastic package with 1.0 mm × 1.3 mm body size, 0.65 mm lead length, and 0.35–0.5 mm lead width. Pin 1 is No Connect (NC), Pin 2 is Anode, Pin 3 is Cathode - top-view orientation confirmed per datasheet diagram.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | No Connect (NC) | Electrically isolated terminal; must remain unconnected on PCB - not usable for thermal pad or grounding |
| 2 | Anode | Connected to lower-potential node; reverse bias applied between Cathode (Pin 3) and Anode (Pin 2) |
| 3 | Cathode | Connected to higher-potential node; zener breakdown occurs when cathode voltage exceeds anode by VZ |
Key Features
| Feature | Design Value |
|---|---|
| Zener voltage grade B1 tolerance | ±2.1% (24.54–25.57 V) - enables tighter reference accuracy than standard-grade Zeners without trimming |
| Low dynamic resistance | 60 Ω max - improves line and load regulation in feedback networks and analog references |
| MPAK surface-mount package | 0.65 mm profile, 1.0 × 1.3 mm footprint - supports high-density layout and automated assembly |
| Stable temperature coefficient | +0.07 mV/°C near 24 V - reduces drift-induced error in industrial temperature ranges (–40°C to +85°C) |
| Pulse-tested characterization | Verified at Pw = 40 ms - ensures parameter consistency under transient regulation conditions |
Applications
| Industrial Sensor Reference | Low-Power Supply Feedback |
|---|---|
Use Scenario: Precision voltage reference for 4–20 mA current loop transmitters in process automation systems. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable 24.5–25.6 V reference for op-amp-based current source calibration. Use Value: Enables ±0.5% full-scale accuracy over –25°C to +75°C ambient due to low γZ and tight VZ tolerance. |
Use Scenario: Feedback element in isolated flyback converter secondary-side regulation. IC Role / Device Role / Timing Role: Zener clamp defining optocoupler LED forward voltage threshold to regulate output voltage. Use Value: Delivers stable 25 V reference with <60 Ω impedance, minimizing regulation error from optocoupler CTR variation. |
| Portable Instrumentation Bias | Overvoltage Protection Clamp |
Use Scenario: Reference source for 12-bit ADC in handheld multimeter front-end. IC Role / Device Role / Timing Role: Low-leakage (2 μA @ 19 V) shunt reference powering precision voltage divider network. Use Value: Ensures <0.1 LSB reference drift across battery discharge cycle (2.8–3.6 V input) via stable VZ and minimal IR dependency. |
Use Scenario: Secondary-stage overvoltage clamp protecting 24 V rail in PLC I/O module. IC Role / Device Role / Timing Role: Fast-acting shunt limiter triggered above 25.6 V to divert surge current away from downstream ICs. Use Value: Responds within nanoseconds to transients up to 200 mW peak, preventing latch-up in 3.3 V logic supervisors. |
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-C24LT1G | 24.0 V nominal (22.8–25.2 V), SOT-23, 350 mW Pd, rd = 80 Ω | Higher power rating but looser tolerance (±5%) and higher dynamic resistance | Preferred where board space allows SOT-23 and ±5% regulation accuracy suffices |
| MMSZ5252BT1G | 24.0 V nominal (22.8–25.2 V), SOD-123, 500 mW Pd, rd = 70 Ω | Larger footprint, higher power, same VZ spread, no NC pin | Suitable for higher-current clamping where thermal mass improves reliability |
Compared with HZM24NB1TR-E, BZX84-C24LT1G offers higher power but sacrifices grade-B1 precision and MPAK density; MMSZ5252BT1G trades miniaturization for robustness in surge-prone environments - selection depends on whether traceability to ±2.1% VZ or thermal resilience dominates the design priority.
Availability
HZM24NB1TR-E is available at Aetrix Electronics and suitable for industrial sensor reference, low-power supply feedback, portable instrumentation bias, and overvoltage protection clamp applications requiring stable component supply and consistent B1-grade voltage tolerance.
Supply support for HZM24NB1TR-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, and power devices for industrial, automotive, and infrastructure markets.
HZM24NB1TR-E belongs to the HZM-N Series Zener diode product line, engineered for high-accuracy voltage stabilization in space-constrained, surface-mount applications demanding tight tolerance and predictable thermal behavior.
FAQ
What is the exact zener voltage range for HZM24NB1TR-E at 5 mA?
The HZM24NB1TR-E has a guaranteed zener voltage range of 24.54 V (minimum) to 25.57 V (maximum) when tested at IZ = 5 mA and Ta = 25°C. This B1-grade specification reflects ±2.1% tolerance around the nominal 25.0 V point, confirmed in Renesas datasheet R07DS0358EJ0600 Rev.6.00, Page 3.
Does HZM24NB1TR-E have a functional pin 1, and what is its role?
No - pin 1 of the HZM24NB1TR-E is designated NC (No Connect) and must remain unconnected on the PCB. It serves no electrical function and is not internally bonded. The active terminals are pin 2 (Anode) and pin 3 (Cathode), as shown in the top-view pin arrangement diagram on Page 1 of the Renesas datasheet.
What is the maximum reverse current specification for HZM24NB1TR-E, and at what voltage is it measured?
The maximum reverse current (IR) for HZM24NB1TR-E is 2 μA, measured at VR = 19.0 V. This parameter defines the leakage level well below the zener knee and is critical for low-power standby operation. It is specified in the Electrical Characteristics table on Page 3 of the official Renesas datasheet.
Can HZM24NB1TR-E be used in place of a standard 24 V Zener diode like 1N4749A?
No - HZM24NB1TR-E is not a direct replacement for through-hole diodes such as 1N4749A. It uses the MPAK surface-mount package (PLSP0003ZC-A), has different thermal derating behavior, and features tighter B1-grade tolerance (±2.1% vs. ±5%). Substitution requires PCB layout revision and validation of power dissipation under actual board thermal conditions.
What is the temperature coefficient of HZM24NB1TR-E, and how does it affect long-term stability?
The typical temperature coefficient (γZ) of HZM24NB1TR-E is +0.07 mV/°C, as shown in Figure 2 of the Renesas datasheet. This low positive drift means output voltage increases by ~1.75 mV over a 25°C rise - enabling predictable compensation in precision references and minimizing calibration drift in industrial temperature ranges.
HZM24NB1TR-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:
- -
HZM24NB1TR-E FAQ
1.How can I place an order for HZM24NB1TR-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZM24NB1TR-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 HZM24NB1TR-E reliable?
The price and inventory of HZM24NB1TR-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZM24NB1TR-E is usually 5 days.
3.What payment methods are accepted for HZM24NB1TR-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZM24NB1TR-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZM24NB1TR-E?
HZM24NB1TR-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZM24NB1TR-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 HZM24NB1TR-E?
For technical support, including HZM24NB1TR-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZM24NB1TR-E requirements.
6.How does Aetrix verify that HZM24NB1TR-E is sourced from the original manufacturer or authorized distributors?
All HZM24NB1TR-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 HZM24NB1TR-E meets industry standards.
7.What is the process for return or replacement of HZM24NB1TR-E?
All HZM24NB1TR-E units undergo pre-shipment inspection (PSI). If there is an issue with HZM24NB1TR-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 HZM24NB1TR-E part is unused and in its original packaging.
Return procedure for HZM24NB1TR-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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