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Nexperia USA Inc. BZT52H-B9V1,115
- Part No.:
- BZT52H-B9V1,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
BZT52H-B9V1,115.pdf
- Description:
- DIODE ZENER 9.1V 375MW SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:5,901
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Product details
Overview
BZT52H-B9V1,115 from Nexperia is a ±2 % tolerance Zener diode in SOD123F package, rated for 9.1 V nominal breakdown voltage at IZ = 5 mA, with 830 mW total power dissipation and 100 Ω maximum differential resistance - used for precision voltage reference and overvoltage clamping in low-power analog supply rails.
For engineers reviewing the BZT52H-B9V1,115 datasheet, BZT52H-B9V1,115 pinout, BZT52H-B9V1,115 application, or BZT52H-B9V1,115 equivalent, this device serves as a stable, surface-mount voltage regulator in space-constrained DC-DC feedback paths, sensor biasing networks, and microcontroller reset circuitry where tight voltage tolerance and thermal stability are required.
Technical Context
This Zener diode operates in reverse-biased breakdown mode with a specified VZ of 8.92 V to 9.28 V at 5 mA test current, exhibiting a positive temperature coefficient of +0.5 mV/K across its operating range. Its low 100 Ω dynamic impedance ensures minimal output voltage variation under load changes.
Designed for FR4 PCB mounting with single-sided copper and tin-plated pads, it achieves 150 K/W junction-to-solder-point thermal resistance and supports non-repetitive peak reverse currents up to 3.0 A (100 μs pulse), enabling transient suppression in low-energy surge scenarios.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage (VZ) | 8.92 V to 9.28 V at IZ = 5 mA - defines precise regulation point for feedback or reference circuits |
| Tolerance | ±2 % - enables tighter system-level voltage accuracy than ±5 % variants without premium cost |
| Differential Resistance (rdif) | ≤100 Ω - ensures <100 mV output shift per 1 mA load change in regulation applications |
| Total Power Dissipation (Ptot) | 830 mW at Tamb ≤ 25 °C - supports continuous operation in compact layouts with minimal heatsinking |
| Forward Voltage (VF) | ≤0.9 V at IF = 10 mA - allows use as polarity protection diode in dual-role designs |
| Reverse Current (IR) | ≤10 μA at VR = 7.2 V - guarantees low leakage in high-impedance bias networks |
| Junction Temperature (Tj) | −65 °C to +150 °C - enables deployment in industrial ambient environments without derating |
Pinout & Package
SOD123F surface-mount plastic package: 2-terminal, flat lead, 3.4–3.6 mm length × 2.5–2.7 mm width × 0.9–1.2 mm height; cathode marked by bar on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; marking bar identifies this terminal for correct PCB orientation |
| 2 | Anode (A) | Connected to ground or lower-potential rail; forms reverse-biased junction during regulation |
Key Features
| Feature | Design Value |
|---|---|
| Three-tolerance series | ±1 %, ±2 %, and ≈±5 % options - allows trade-off between regulation accuracy and BOM cost |
| Low-profile SMD package | SOD123F footprint (3.5 × 2.6 mm) - fits 0805-class board area while supporting 830 mW dissipation |
| Wide voltage range | 2.4 V to 75 V (E24 standard) - covers most analog supply and reference needs without redesign |
| Thermal performance | Rth(j-sp) = 150 K/W - enables stable regulation under moderate ambient rise without thermal runaway |
| Transient robustness | IZSM = 3.0 A (100 μs) - clamps short-duration ESD or inductive spikes without failure |
Applications
| Power Supply Feedback Reference | Sensor Biasing Network |
|---|---|
Use Scenario: Stabilizing output voltage of isolated flyback or buck converter via optocoupler-coupled feedback loop. IC Role / Device Role / Timing Role: Provides precise 9.1 V reference to TL431 or comparator input, setting regulation threshold. Use Value: ±2 % VZ tolerance reduces output variation to ±15 mV, improving system compliance with 5 V ±5 % spec. |
Use Scenario: Supplying stable excitation voltage to resistive temperature detector (RTD) or bridge-based pressure sensor. IC Role / Device Role / Timing Role: Acts as low-noise, low-drift shunt reference replacing higher-cost IC references. Use Value: 100 Ω rdif limits sensor output error to <0.1 % full scale under 100 μA bias current variation. |
| Microcontroller Reset Circuit | Overvoltage Clamp for I/O Protection |
Use Scenario: Generating clean reset signal when main 3.3 V rail drops below 2.9 V during brown-out. IC Role / Device Role / Timing Role: Zener + resistor network pulls reset line low when VCC falls below threshold. Use Value: 9.1 V rating allows use with voltage divider to target exact 2.9 V trip point with <1 % error. |
Use Scenario: Protecting UART or GPIO pins from 12 V transients induced on shared PCB traces. IC Role / Device Role / Timing Role: Shunts excess energy to ground before voltage exceeds absolute maximum ratings. Use Value: 3.0 A non-repetitive IZSM absorbs 40 W surges (100 μs), preventing latch-up in connected logic. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZT52C9V1,115 | ±5 % tolerance, 100 Ω rdif, same SOD123F package | Higher VZ variation (8.65–9.55 V) - suitable where ±5 % system tolerance is acceptable | Select for cost-sensitive designs where regulation accuracy is secondary to BOM simplification |
| MMSZ5240B-TP | ±5 % tolerance, 150 Ω rdif, SOD-123 package (identical footprint) | Lower Ptot (500 mW), higher leakage (≤5 μA @ 7.2 V) - less stable under thermal drift | Choose only if legacy compatibility with MMSZ52xx family is required; avoid for precision feedback |
Compared with BZT52H-B9V1,115, the BZT52C9V1,115 offers lower unit cost but sacrifices 3× more VZ spread, while MMSZ5240B-TP uses identical layout but delivers 40 % less power handling and poorer thermal regulation - making the BZT52H-B9V1,115 optimal for accuracy-critical, thermally active placements.
Availability
BZT52H-B9V1,115 is available at Aetrix Electronics and suitable for power supply feedback reference, sensor biasing networks, microcontroller reset circuits, and overvoltage clamp applications requiring stable component supply with guaranteed long-term sourcing.
Supply support for BZT52H-B9V1,115 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 delivering high-performance, reliable discrete, logic, and MOSFET devices optimized for efficiency and miniaturization in consumer, industrial, and communications systems.
The BZT52H series belongs to Nexperia's general-purpose Zener diode product line, engineered specifically for stable voltage regulation and clamping in space-constrained, cost-sensitive SMD applications across industrial and computing end-equipment.
FAQ
What is the maximum steady-state power dissipation for BZT52H-B9V1,115?
The BZT52H-B9V1,115 has a total power dissipation rating of 830 mW at ambient temperature ≤25 °C when mounted on an FR4 PCB with single-sided copper and a 1 cm² cathode pad. Derating is required above 25 °C at 8.3 mW/°C based on its 150 K/W junction-to-solder-point thermal resistance.
How does the ±2 % tolerance affect regulation accuracy in a 5 V supply feedback loop?
When used with a resistor divider to set a 5 V output, the ±2 % VZ tolerance (8.92–9.28 V) translates to ±0.8 % output variation assuming ideal resistors. Combined with typical 1 % resistor tolerances, total output error remains within ±2.5 % - meeting most industrial 5 V ±5 % specifications without trimming.
Can BZT52H-B9V1,115 be used for ESD protection on a 3.3 V I/O line?
No - its 9.1 V breakdown voltage is too high for direct 3.3 V rail clamping. It would not activate until voltage exceeds 9.1 V, allowing damage to downstream 3.3 V logic. For I/O protection, select a 3.3 V-rated TVS diode like PESD5V0S1BA with sub-10 ns response and 12 V clamping.
Is the SOD123F package compatible with standard reflow soldering profiles?
Yes - Nexperia specifies reflow soldering as the only recommended method for SOD123F. The package supports JEDEC J-STD-020-compliant profiles with peak temperatures up to 260 °C, and the recommended footprint (2.8 × 1.6 mm solder lands, 2.9 mm center-to-center) ensures reliable wetting and mechanical strength.
BZT52H-B9V1,115 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):
- 9.1 V
- Tolerance:
- ±5%
- Power - Max:
- 375 mW
- Impedance (Max) (Zzt):
- 10 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 6 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-B9V1,115 FAQ
1.How can I place an order for BZT52H-B9V1,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52H-B9V1,115 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-B9V1,115 reliable?
The price and inventory of BZT52H-B9V1,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52H-B9V1,115 is usually 5 days.
3.What payment methods are accepted for BZT52H-B9V1,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52H-B9V1,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52H-B9V1,115?
BZT52H-B9V1,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52H-B9V1,115 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-B9V1,115?
For technical support, including BZT52H-B9V1,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52H-B9V1,115 requirements.
6.How does Aetrix verify that BZT52H-B9V1,115 is sourced from the original manufacturer or authorized distributors?
All BZT52H-B9V1,115 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-B9V1,115 meets industry standards.
7.What is the process for return or replacement of BZT52H-B9V1,115?
All BZT52H-B9V1,115 units undergo pre-shipment inspection (PSI). If there is an issue with BZT52H-B9V1,115, 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-B9V1,115 part is unused and in its original packaging.
Return procedure for BZT52H-B9V1,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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