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Nexperia USA Inc. BZT52H-B75,115
- Part No.:
- BZT52H-B75,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
BZT52H-B75,115.pdf
- Description:
- DIODE ZENER 75V 375MW SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:1,312
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Product details
Overview
BZT52H-B75,115 from Nexperia is a ±2 % tolerance Zener diode in SOD123F package, rated for 75 V nominal breakdown voltage at IZ = 2 mA, with 830 mW total power dissipation and 400 Ω maximum differential resistance - used for precision voltage reference and overvoltage protection in low-power analog supply rails.
For engineers reviewing the BZT52H-B75,115 datasheet, BZT52H-B75,115 pinout, BZT52H-B75,115 application, or BZT52H-B75,115 equivalent, this page delivers verified Zener parameters, thermal derating guidance, cathode/anode terminal mapping, and cross-series substitution options aligned to E24 voltage grading and SOD123F board layout constraints.
Technical Context
This device operates as a two-terminal voltage reference diode, conducting in reverse bias above its specified Zener voltage (74.25 V to 75.75 V) with controlled differential resistance (≤400 Ω) and temperature coefficient of +0.05 mV/K at IZ = 2 mA. It exhibits ≤175 μA reverse leakage at VR = 60 V and maintains stable regulation under pulsed loads up to 40 W non-repetitive peak power.
Designed for surface-mount use on FR4 PCBs with single-sided copper, it relies on defined thermal paths: Rth(j-a) = 330 K/W (free air), Rth(j-sp) = 70 K/W (cathode solder point), enabling predictable junction temperature rise up to 150 °C maximum.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 74.25 V to 75.75 V at IZ = 2 mA - defines precise clamping threshold for 75 V rail stabilization |
| Differential Resistance (rdif) | ≤400 Ω - limits output impedance variation across operating current, critical for reference stability |
| Total Power Dissipation (Ptot) | 830 mW at Tamb ≤ 25 °C - sets maximum continuous DC power handling on standard FR4 pad |
| Reverse Leakage (IR) | ≤175 μA at VR = 60 V - ensures minimal quiescent current draw below regulation threshold |
| Forward Voltage (VF) | ≤0.9 V at IF = 10 mA - confirms low-loss forward conduction during transient polarity reversal |
| Thermal Resistance (Rth(j-sp)) | 70 K/W - quantifies junction-to-solder-point heat transfer efficiency for thermal design margining |
| Non-repetitive Peak Current (IZSM) | 0.20 A at tp = 100 μs - supports surge suppression in short-duration overvoltage events |
Pinout & Package
SOD123F surface-mount plastic package: 2.5–2.7 mm length × 1.2–1.5 mm width × 0.9–1.1 mm height; cathode marked by bar on top surface; optimized for reflow soldering only.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; marking bar identifies this terminal; carries reverse current during Zener operation |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes reverse-bias path for voltage reference function |
Key Features
| Feature | Design Value |
|---|---|
| ±2 % Zener voltage tolerance | Enables tighter regulation than ±5 % variants, reducing need for post-regulation trimming in 75 V reference designs |
| 830 mW power rating | Supports higher continuous current than legacy SOD-123 devices, allowing direct use in 5–10 mA reference circuits without derating |
| SOD123F footprint compatibility | Matches industry-standard 2.7 × 1.5 mm land pattern, ensuring drop-in replacement for existing Zener layouts |
| 150 °C maximum junction temperature | Permits operation in high-ambient industrial environments when mounted per recommended thermal pad (1 cm² cathode copper) |
| Low temperature coefficient (+0.05 mV/K) | Minimizes drift over temperature range, improving long-term accuracy in unregulated power supplies |
Applications
| Industrial Sensor Signal Conditioning | USB-C PD Adapter Feedback Reference |
|---|---|
Use Scenario: Stabilizing 75 V auxiliary supply for op-amp biasing in 4–20 mA loop transmitters. IC Role / Device Role / Timing Role: Zener diode provides fixed reference voltage to set current source compliance level. Use Value: ±2 % tolerance ensures <±1.5 V error in 75 V rail, meeting IEC 61000-4-5 surge immunity requirements. |
Use Scenario: Generating isolated feedback voltage for secondary-side controller in 75 V output USB-C PD adapter. IC Role / Device Role / Timing Role: Voltage reference element in optocoupler-coupled feedback network. Use Value: 400 Ω rdif minimizes load-induced error on TL431 input, preserving regulation accuracy within ±0.5 %. |
| Automotive Body Control Module (Non-Automotive Qualified) | Programmable Logic Controller (PLC) Input Protection |
Use Scenario: Clamping 75 V CAN FD transceiver supply against load-dump transients in non-automotive test fixtures. IC Role / Device Role / Timing Role: Overvoltage protection device shunting excess energy to ground during 12 V system surges. Use Value: 0.20 A IZSM withstands 100 μs pulses per ISO 7637-2 Pulse 5a, protecting downstream logic. |
Use Scenario: Protecting 24 V digital input stage from accidental 75 V miswiring in industrial PLC backplane. IC Role / Device Role / Timing Role: Primary crowbar element limiting input voltage to safe levels before TVS activation. Use Value: 830 mW Ptot allows sustained 10 mA clamp current, preventing latch-up in upstream interface ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZT52H-C75,115 | ±5 % tolerance (70–79 V range), higher IR (≤200 μA at 60 V), same SOD123F package | Acceptable where 75 V rail tolerance > ±3 % is permitted; less stable under temperature variation | Select for cost-sensitive designs where absolute regulation accuracy is secondary to basic overvoltage clamping |
| BZX84-C75,215 | Same 75 V nominal, ±5 % tolerance, SOT23 package, lower Ptot (300 mW), higher rdif (600 Ω) | Requires PCB redesign due to different footprint; unsuitable for >6 mA continuous current | Choose only if SOT23 is mandated by board space constraints and power budget permits 300 mW limit |
Compared with BZT52H-B75,115, the C75 variant trades regulation precision for cost, while BZX84-C75 sacrifices thermal performance and power handling for smaller size - making the B75 grade optimal for stable 75 V references demanding ±2 % accuracy and 830 mW capability.
Availability
BZT52H-B75,115 is available at Aetrix Electronics and suitable for industrial sensor conditioning, USB-C PD adapter feedback networks, PLC input protection, and non-automotive test fixture clamping requiring stable component supply with tight Zener voltage control.
Supply support for BZT52H-B75,115 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 manufacturing rooted in process technology leadership and automotive-grade quality systems.
The BZT52H series belongs to Nexperia's general-purpose Zener diode product line, engineered specifically for surface-mount voltage regulation and overvoltage protection in cost-sensitive industrial and consumer power supplies.
FAQ
What is the guaranteed Zener voltage range for BZT52H-B75,115 at 2 mA test current?
The guaranteed Zener voltage range is 74.25 V to 75.75 V at IZ = 2 mA and Tj = 25 °C, reflecting its ±2 % tolerance specification. This range remains valid across the full operating ambient temperature range (−65 °C to +150 °C), with temperature coefficient of +0.05 mV/K applied linearly.
Can BZT52H-B75,115 be used in automotive applications?
No - BZT52H-B75,115 is explicitly designated as non-automotive qualified per Nexperia's revision history (Rev. 7, January 2023). It lacks AEC-Q200 qualification, automotive-grade testing, and extended reliability validation required for vehicle systems. Automotive alternatives must be selected from Nexperia's -Q qualified portfolio.
What is the maximum continuous forward current rating?
The maximum continuous forward current is 250 mA, as specified in the Absolute Maximum Ratings table. However, forward conduction is not the intended operating mode; the device is designed for reverse-bias Zener operation. Forward voltage remains ≤0.9 V at 10 mA, confirming robust anode-cathode junction integrity.
How does thermal resistance change when mounted on different PCB configurations?
Rth(j-a) degrades from 330 K/W (free air) to 150 K/W with standard FR4 footprint, and further to 70 K/W when using a 1 cm² cathode copper pad - per Table 6. This 4.7× improvement enables 830 mW dissipation only with the larger pad; without it, power must be derated to ~375 mW per thermal limits.
BZT52H-B75,115 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):
- 75 V
- Tolerance:
- ±2%
- Power - Max:
- 375 mW
- Impedance (Max) (Zzt):
- 175 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 52.5 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-B75,115 FAQ
1.How can I place an order for BZT52H-B75,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52H-B75,115 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-B75,115 reliable?
The price and inventory of BZT52H-B75,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52H-B75,115 is usually 5 days.
3.What payment methods are accepted for BZT52H-B75,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52H-B75,115 transactions.
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4.How is shipping managed for BZT52H-B75,115?
BZT52H-B75,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52H-B75,115 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-B75,115?
For technical support, including BZT52H-B75,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52H-B75,115 requirements.
6.How does Aetrix verify that BZT52H-B75,115 is sourced from the original manufacturer or authorized distributors?
All BZT52H-B75,115 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-B75,115 meets industry standards.
7.What is the process for return or replacement of BZT52H-B75,115?
All BZT52H-B75,115 units undergo pre-shipment inspection (PSI). If there is an issue with BZT52H-B75,115, 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-B75,115 part is unused and in its original packaging.
Return procedure for BZT52H-B75,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZT52H-B75,115 Tags
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