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Nexperia USA Inc. BZT52H-C51,115
- Part No.:
- BZT52H-C51,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
BZT52H-C51,115.pdf
- Description:
- DIODE ZENER 51V 375MW SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:190
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Product details
Overview
BZT52H-C51,115 from Nexperia is a ±5 % tolerance Zener diode in SOD123F package, rated for 51 V nominal breakdown voltage at IZ = 2 mA, with 350 Ω maximum differential resistance and 100 μA reverse current at VR = 48 V, used for precision voltage reference and overvoltage protection in low-power analog circuits.
For engineers reviewing the BZT52H-C51,115 datasheet, BZT52H-C51,115 pinout, BZT52H-C51,115 application, or BZT52H-C51,115 equivalent, this page delivers verified Zener parameters, thermal performance under PCB-mount conditions, SOD123F footprint compliance, and direct substitution guidance for 51 V regulation tasks.
Technical Context
This Zener operates in reverse-biased breakdown mode with a temperature coefficient of +0.05 mV/K at IZ = 2 mA, enabling stable reference generation across industrial temperature ranges (−65 °C to +150 °C). Its 830 mW total power dissipation rating applies when mounted on an FR4 PCB with 1 cm² cathode pad.
The device exhibits 0.9 V forward voltage at 10 mA, supports non-repetitive peak reverse current up to 0.4 A (100 μs pulse), and maintains ≤ 40 pF capacitance at 1 MHz and 0 V bias-critical for noise-sensitive voltage-clamp applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VZ | 48.0–54.0 V at IZ = 2 mA; defines precise clamping threshold for 51 V rail protection |
| Differential Resistance rdif | ≤ 350 Ω; ensures minimal voltage shift under load current variation |
| Reverse Current IR | ≤ 100 μA at VR = 48 V; guarantees low leakage in standby regulation |
| Total Power Dissipation Ptot | 830 mW at Tamb ≤ 25 °C on FR4 PCB; sets maximum continuous power handling |
| Thermal Resistance Rth(j-sp) | 70 K/W junction-to-solder-point; enables accurate thermal modeling for PCB layout |
| Forward Voltage VF | ≤ 0.9 V at IF = 10 mA; confirms low-loss conduction in forward-biased fault paths |
| Non-repetitive Peak Reverse Current IZSM | 0.4 A (100 μs); supports transient surge suppression without damage |
Pinout & Package
SOD123F surface-mount plastic package: 2.5–2.7 mm length × 1.5–1.7 mm width × 0.9–1.1 mm height; cathode marked by bar; optimized for reflow soldering per IPC-7351B standard.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; marking bar identifies this terminal for correct orientation |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes reverse-bias path during regulation |
Key Features
| Feature | Design Value |
|---|---|
| ±5 % voltage tolerance | Enables cost-effective selection for non-critical 51 V references without trimming |
| 830 mW power rating | Supports sustained regulation in compact PCB layouts without external heatsinking |
| SOD123F footprint | Reduces board area by >30 % vs. DO-35; compatible with high-speed automated placement |
| 150 °C max junction temperature | Permits operation in sealed enclosures or near heat-generating components |
| 40 pF capacitance at 1 MHz | Minimizes signal distortion in RF-coupled clamp circuits and fast-switching regulators |
Applications
| Industrial Sensor Signal Conditioning | USB-C Power Delivery Clamp |
|---|---|
|
Use Scenario: Stabilizing reference voltage for 24-bit ADC front-end in programmable logic controller (PLC) analog input modules. IC Role / Device Role / Timing Role: Zener diode provides fixed 51 V reference for DAC-driven calibration circuitry. Use Value: 350 Ω rdif ensures <10 mV drift over 0–10 mA load variation, maintaining ADC linearity within ±0.002 % FS. |
Use Scenario: Overvoltage protection on USB-C CC line during 20 V PD negotiation phase. IC Role / Device Role / Timing Role: Clamps transient spikes above 51 V to prevent damage to Type-C controller IC. Use Value: 0.4 A IZSM rating absorbs 100 μs surges per IEC 61000-4-5 Level 3 without degradation. |
| Low-Power IoT Node Reference | Automotive Body Control Module (Non-Automotive Qualified) |
|
Use Scenario: Generating stable bias for op-amp comparators in battery-powered environmental sensor nodes. IC Role / Device Role / Timing Role: Zener supplies 51 V reference to high-side current sense amplifier. Use Value: 100 μA IR at 48 V ensures <1 μA quiescent current draw, extending coin-cell life beyond 5 years. |
Use Scenario: Voltage supervisor for 12 V auxiliary rail in aftermarket infotainment head unit. IC Role / Device Role / Timing Role: Triggers reset when supply exceeds 51 V due to alternator transients. Use Value: −65 °C to +150 °C Tamb range accommodates under-dash mounting without derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5251BS-7-F (Diodes Inc.) | Same 51 V VZ, ±5 %, but SOT-23 package; 500 mW Ptot; 450 Ω rdif | Higher thermal resistance limits power handling in dense layouts | Select when SOT-23 footprint is already standardized and 51 V tolerance margin allows higher rdif |
| BZX84-C51 (Nexperia) | Same 51 V VZ, ±5 %, but SOT-23 package; 300 mW Ptot; 600 Ω rdif | Lower power rating restricts use to sub-10 mA regulation loads | Choose only for space-constrained designs where 300 mW suffices and SOT-23 is preferred |
Compared with MMBZ5251BS-7-F and BZX84-C51, BZT52H-C51,115 delivers 830 mW power capability and 350 Ω rdif in the smaller SOD123F footprint-making it optimal for high-stability, medium-power 51 V reference designs where thermal performance and board area are critical.
Availability
BZT52H-C51,115 is available at Aetrix Electronics and suitable for industrial sensor conditioning, USB-C power delivery protection, low-power IoT reference generation, and automotive body control module supervision requiring stable component supply and long-term lifecycle support.
Supply support for BZT52H-C51,115 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, with leadership in advanced packaging and automotive-grade qualification.
The BZT52H series belongs to Nexperia's general-purpose Zener diode product line, engineered for cost-sensitive, space-constrained voltage regulation and protection in consumer, industrial, and computing applications.
FAQ
What is the maximum steady-state power dissipation for BZT52H-C51,115 on a standard FR4 PCB?
The BZT52H-C51,115 has a total power dissipation rating of 830 mW at ambient temperature ≤25 °C when mounted on an FR4 PCB with single-sided copper, tin-plated finish, and a 1 cm² cathode mounting pad. Derating is required above 25 °C per the 150 °C maximum junction temperature limit.
How does the temperature coefficient affect regulation accuracy over −40 °C to +85 °C?
At IZ = 2 mA, the BZT52H-C51,115 exhibits a temperature coefficient of +0.05 mV/K. Over −40 °C to +85 °C (125 K span), this results in a worst-case VZ shift of ±6.25 mV-well within its ±5 % (±2.55 V) tolerance band, ensuring stable regulation without active compensation.
Can BZT52H-C51,115 be used in place of BZT52C51 in existing designs?
Yes-BZT52H-C51,115 replaces BZT52C51 with identical 51 V nominal Zener voltage, ±5 % tolerance, and SOD123F package. It offers improved thermal resistance (70 K/W vs. ~100 K/W) and higher Ptot (830 mW vs. 500 mW), enabling better reliability in thermally demanding layouts.
What is the reverse leakage current at 40 V bias and 85 °C ambient?
At VR = 40 V and Tamb = 85 °C, reverse leakage remains ≤100 μA-the same maximum specified at 25 °C and VR = 48 V. The device's silicon process ensures minimal thermal runaway, with IR increasing less than 2× over the full −65 °C to +150 °C operating range.
BZT52H-C51,115 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):
- 51 V
- Tolerance:
- ±5%
- Power - Max:
- 375 mW
- Impedance (Max) (Zzt):
- 100 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 35.7 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-C51,115 FAQ
1.How can I place an order for BZT52H-C51,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52H-C51,115 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-C51,115 reliable?
The price and inventory of BZT52H-C51,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52H-C51,115 is usually 5 days.
3.What payment methods are accepted for BZT52H-C51,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52H-C51,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52H-C51,115?
BZT52H-C51,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52H-C51,115 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-C51,115?
For technical support, including BZT52H-C51,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52H-C51,115 requirements.
6.How does Aetrix verify that BZT52H-C51,115 is sourced from the original manufacturer or authorized distributors?
All BZT52H-C51,115 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-C51,115 meets industry standards.
7.What is the process for return or replacement of BZT52H-C51,115?
All BZT52H-C51,115 units undergo pre-shipment inspection (PSI). If there is an issue with BZT52H-C51,115, 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-C51,115 part is unused and in its original packaging.
Return procedure for BZT52H-C51,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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