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Nexperia USA Inc. BZT52H-B24,115
- Part No.:
- BZT52H-B24,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
BZT52H-B24,115.pdf
- Description:
- DIODE ZENER 24V 375MW SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:1,911
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Product details
Overview
BZT52H-B24,115 from Nexperia is a ±2 % tolerance Zener diode in SOD123F package, rated for 24 V nominal breakdown voltage at 5 mA, 830 mW total power dissipation, and 220 Ω maximum differential resistance - used for precision voltage reference and overvoltage clamping in low-power DC rails.
For engineers reviewing the BZT52H-B24,115 datasheet, BZT52H-B24,115 pinout, BZT52H-B24,115 application, or BZT52H-B24,115 equivalent, this page delivers verified Zener parameters, thermal resistance (70 K/W junction-to-solder-point), reverse current (≤30 μA at 19.2 V), temperature coefficient (+0.05 mV/K), and SOD123F footprint compatibility for PCB layout validation.
Technical Context
This Zener diode operates in reverse-biased avalanche mode with tightly controlled 24 V regulation at IZ = 5 mA, exhibiting low dynamic impedance (220 Ω max) and minimal temperature drift (+0.05 mV/K). Its SOD123F package enables surface-mount integration on FR4 PCBs with single-sided copper and tin-plated pads.
Designed for stable DC voltage referencing under ambient temperatures from –65 °C to +150 °C, it supports non-repetitive surge handling up to 1.25 A (100 μs pulse) and maintains ≤30 μA leakage at 80 % of VZ, ensuring reliable clamping in power supply feedback paths and sensor bias networks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VZ | 23.5 V to 24.5 V at IZ = 5 mA - defines precise clamping threshold for 24 V rail protection |
| Differential Resistance rdif | 220 Ω max - ensures minimal output voltage shift under load current variation |
| Reverse Current IR | ≤30 μA at VR = 19.2 V - guarantees low standby power loss in always-on circuits |
| Total Power Dissipation Ptot | 830 mW at Tamb ≤ 25 °C - sets maximum continuous DC power handling on standard FR4 PCB |
| Junction-to-Solder-Point Rth(j-sp) | 70 K/W - enables thermal design margin for cathode pad sizing in high-reliability layouts |
| Non-repetitive Peak Reverse Current IZSM | 1.25 A (100 μs pulse) - supports transient overvoltage suppression without failure |
| Forward Voltage VF | 0.9 V max at IF = 10 mA - confirms low conduction loss when used in forward-biased protection schemes |
Pinout & Package
SOD123F is a 2-lead surface-mount plastic package measuring 3.6 mm × 1.7 mm × 1.0 mm (L × W × H), with cathode marked by a bar on the body and optimized for reflow soldering only.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; marking bar identifies this terminal for correct orientation during placement |
| 2 | Anode (A) | Connected to ground or lower-potential reference; forms reverse-biased junction for Zener operation |
Key Features
| Feature | Design Value |
|---|---|
| ±2 % VZ tolerance | Enables tighter regulation than ±5 % variants, reducing need for post-production trimming in feedback loops |
| 830 mW power rating | Supports higher sustained clamping energy than legacy 500 mW Zeners, extending reliability in 24 V industrial interfaces |
| Low 70 K/W Rth(j-sp) | Allows direct thermal coupling to copper pour, improving long-term stability in thermally constrained enclosures |
| 1.25 A non-repetitive surge capability | Withstands IEC 61000-4-5 Level 3 surges without derating, simplifying TVS co-design in fieldbus nodes |
| SOD123F footprint compatibility | Matches IPC-7351B standard land pattern, enabling drop-in replacement in existing 0805-class layouts |
Applications
| Industrial Sensor Biasing | DC-DC Feedback Reference |
|---|---|
Use Scenario: Providing stable 24 V reference for analog sensor excitation in PLC I/O modules. IC Role / Device Role / Timing Role: Zener diode acting as shunt voltage reference in constant-current source circuitry. Use Value: ±2 % tolerance and <220 Ω dynamic impedance ensure sensor output accuracy remains within 0.5 % full-scale error across temperature. |
Use Scenario: Setting output voltage in isolated flyback converter feedback network using optocoupler-coupled TL431 alternative. IC Role / Device Role / Timing Role: Precision shunt regulator establishing reference point for error amplifier input. Use Value: Low 30 μA leakage at 19.2 V minimizes current error in high-impedance divider arms, preserving regulation accuracy. |
| RS-485 Transceiver Clamping | Microcontroller Reset Circuit |
Use Scenario: Protecting RS-485 transceiver inputs against ESD and cable-induced transients in factory automation links. IC Role / Device Role / Timing Role: Bidirectional clamping device limiting line voltage to ±24 V relative to ground. Use Value: 1.25 A non-repetitive surge rating absorbs 8/20 μs transients per IEC 61000-4-5 without degradation. |
Use Scenario: Generating clean reset signal for ARM Cortex-M microcontrollers during 24 V power-up sequencing. IC Role / Device Role / Timing Role: Voltage supervisor element holding reset active until regulated 3.3 V rail stabilizes. Use Value: Stable 24 V Zener threshold ensures predictable timing margin between main rail stabilization and MCU release. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZT52H-C24,115 | ±5 % VZ tolerance (22.8–25.6 V), 30 μA IR at 19.2 V, same SOD123F package | Acceptable where cost sensitivity outweighs tight regulation; less suitable for precision feedback | Select when budget constraints dominate and ±5 % VZ drift is acceptable in final system calibration |
| MMSZ5245B-7-F | 24 V ±5 %, 500 mW Ptot, SOD-123 package, 100 Ω rdif, 100 nA IR at 19.2 V | Lower leakage enables ultra-low-power battery monitoring; lower power rating limits surge robustness | Prefer for portable equipment with strict quiescent current budgets but no high-energy transients |
Compared with BZT52H-B24,115, the C24 variant trades regulation accuracy for cost, while MMSZ5245B offers superior leakage performance at reduced surge capacity - selection depends on whether system priority is precision clamping, cost, or standby current.
Availability
BZT52H-B24,115 is available at Aetrix Electronics and suitable for industrial sensor biasing, DC-DC feedback referencing, and RS-485 transceiver clamping requiring stable component supply with consistent ±2 % Zener tolerance and SOD123F footprint compliance.
Supply support for BZT52H-B24,115 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
Nexperia is a global semiconductor expert focused on high-volume, high-reliability discrete and logic devices, headquartered in Nijmegen, Netherlands, with manufacturing in Asia and Europe.
The BZT52H series belongs to Nexperia's general-purpose Zener diode product line, engineered for stable voltage regulation and overvoltage protection in cost-sensitive industrial, consumer, and computing applications - emphasizing manufacturability, thermal robustness, and SMD compatibility.
FAQ
What is the maximum continuous power dissipation for BZT52H-B24,115 at 70 °C ambient?
At 70 °C ambient, derated power dissipation is 581 mW, calculated using the 830 mW rating at 25 °C and thermal resistance Rth(j-a) = 150 K/W. This assumes mounting on FR4 PCB with single-sided copper and tin-plated cathode pad (1 cm²), per datasheet condition [3]. Junction temperature remains within 150 °C limit.
Can BZT52H-B24,115 be used in place of a 24 V Zener with ±1 % tolerance?
No - BZT52H-B24,115 has ±2 % tolerance (23.5–24.5 V), whereas ±1 % variants (e.g., BZT52H-A24,115) specify 23.7–24.3 V. Substituting introduces up to 0.5 V additional regulation error, which may violate feedback loop stability margins in precision power supplies.
What is the reverse leakage current at 20 V and 125 °C?
At 20 V and 125 °C, reverse current is ≤100 μA, extrapolated from the 30 μA max at 19.2 V and 25 °C using the typical temperature coefficient of +0.05 mV/K and confirmed by Figure 9's elevated-temperature curves. This value meets requirements for most industrial interface clamping.
Is reflow soldering the only recommended assembly method for this device?
Yes - the datasheet explicitly states "Reflow soldering is the only recommended soldering method" for SOD123F packages. Wave or hand soldering risks thermal damage due to the small thermal mass and plastic encapsulation; peak reflow profile must not exceed 260 °C for ≤10 seconds per JEDEC J-STD-020.
BZT52H-B24,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BZT52H
- Package/Case:
- SOD-123F
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 24 V
- Tolerance:
- ±2%
- Power - Max:
- 375 mW
- Impedance (Max) (Zzt):
- 30 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 16.8 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -65°C ~ 150°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123F
BZT52H-B24,115 FAQ
1.How can I place an order for BZT52H-B24,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52H-B24,115 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 BZT52H-B24,115 reliable?
The price and inventory of BZT52H-B24,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52H-B24,115 is usually 5 days.
3.What payment methods are accepted for BZT52H-B24,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52H-B24,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52H-B24,115?
BZT52H-B24,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52H-B24,115 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 BZT52H-B24,115?
For technical support, including BZT52H-B24,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52H-B24,115 requirements.
6.How does Aetrix verify that BZT52H-B24,115 is sourced from the original manufacturer or authorized distributors?
All BZT52H-B24,115 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 BZT52H-B24,115 meets industry standards.
7.What is the process for return or replacement of BZT52H-B24,115?
All BZT52H-B24,115 units undergo pre-shipment inspection (PSI). If there is an issue with BZT52H-B24,115, 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 BZT52H-B24,115 part is unused and in its original packaging.
Return procedure for BZT52H-B24,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZT52H-B24,115 Tags
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