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Nexperia USA Inc. BZT52H-B3V9,115
- Part No.:
- BZT52H-B3V9,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
BZT52H-B3V9,115.pdf
- Description:
- DIODE ZENER 3.9V 375MW SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:2,172
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Product details
Overview
BZT52H-B3V9,115 from Nexperia is a ±2 % tolerance Zener diode in SOD123F package, designed for precision voltage regulation at 3.9 V nominal breakdown voltage with 3 Ω typical differential resistance and ≤1 μA reverse current at 1 V. It delivers stable reference voltage in low-power analog circuits, power supply feedback loops, and overvoltage protection stages.
For engineers reviewing the BZT52H-B3V9,115 datasheet, BZT52H-B3V9,115 pinout, BZT52H-B3V9,115 application, or BZT52H-B3V9,115 equivalent, this page provides verified Zener parameters, thermal performance under PCB-mount conditions, SOD123F footprint compliance, and direct substitution guidance for 3.9 V regulation tasks.
Technical Context
This device operates as a two-terminal voltage reference diode, conducting in reverse bias above its specified Zener voltage (3.9 V at IZ = 5 mA) with tightly controlled temperature coefficient (−3.5 to 0.0 mV/K) and low dynamic impedance. Its design targets stable DC biasing and error-signal clamping in linear regulators and sensor interfaces.
Thermal performance is defined for FR4 PCB mounting: junction-to-ambient thermal resistance is 330 K/W (free air), reduced to 70 K/W when soldered to a 1 cm² cathode pad. Maximum power dissipation is 830 mW at Tamb ≤ 25 °C, derating linearly above that ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 3.9 V nominal at IZ = 5 mA; ±2 % tolerance ensures 3.82–3.98 V regulation window in production. |
| Differential Resistance (rdif) | ≤3 Ω at IZ = 5 mA; enables tight voltage regulation under load transients in feedback networks. |
| Reverse Current (IR) | ≤1 μA at VR = 1 V; minimizes quiescent leakage in battery-powered voltage monitors. |
| Forward Voltage (VF) | ≤0.9 V at IF = 10 mA; supports bidirectional clamping or polarity-sensitive protection schemes. |
| Total Power Dissipation (Ptot) | 830 mW at Tamb ≤ 25 °C on FR4 PCB with 1 cm² cathode pad; defines maximum continuous Zener current (≈213 mA). |
| Junction Temperature (Tj) | Rated up to 150 °C; allows operation in industrial environments with localized heating near switching nodes. |
| Package | SOD123F: 3.6 mm × 1.7 mm × 1.0 mm surface-mount plastic case with flat leads; IPC-compliant for reflow assembly. |
Pinout & Package
SOD123F package: 2-pin surface-mount diode with cathode marked by a bar on the body; optimized for automated placement and reflow soldering on FR4 PCBs with standard footprint per Figure 12.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; marking bar identifies this terminal; carries reverse current during Zener conduction. |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes bias path for reverse-biased operation. |
Key Features
| Feature | Design Value |
|---|---|
| ±2 % Zener voltage tolerance | Enables tighter regulation than ±5 % variants, reducing need for post-regulation trimming in precision references. |
| Low 3 Ω differential resistance | Maintains <±10 mV output shift across 10 mA load variation, critical for ADC reference stability. |
| SOD123F small-outline package | Reduces board area by >40 % vs. DO-35; compatible with 0.5 mm pitch reflow processes and high-density layouts. |
| 830 mW power rating on PCB | Supports higher Zener current than SOD-123 (375 mW), enabling robust shunt regulation in 5 V rail protectors. |
| −3.5 to 0.0 mV/K tempco | Minimizes drift over −65 to +150 °C ambient, suitable for automotive under-hood sensor conditioning. |
Applications
| Power Supply Feedback | Overvoltage Clamp |
|---|---|
|
Use Scenario: Regulating output of adjustable linear regulator (e.g., TLV707) via resistor divider into ADJ pin. IC Role / Device Role: Provides precise 3.9 V reference to set output voltage; replaces bulkier TL431-based solutions where space is constrained. Use Value: Enables ±1 % output accuracy with only two external resistors and no compensation network. |
Use Scenario: Protecting microcontroller GPIO pins from ESD-induced voltage spikes exceeding 3.9 V. IC Role / Device Role: Acts as bidirectional transient suppressor-clamps positive surges to VF ≈ 0.9 V and negative surges to −3.9 V. Use Value: Limits pin stress to <±4 V without adding series resistance, preserving signal integrity in 3.3 V logic interfaces. |
| Sensor Bias Reference | ADC Input Protection |
|
Use Scenario: Supplying stable excitation voltage to resistive temperature detector (RTD) bridge in industrial transmitters. IC Role / Device Role: Delivers low-noise, low-drift 3.9 V bias; operates in constant-current mode with series resistor to minimize self-heating. Use Value: Reduces RTD measurement error to <0.1 °C over 0–70 °C due to <10 ppm/°C effective tempco. |
Use Scenario: Preventing damage to SAR ADC input (e.g., ADS7953) from accidental overrange signals in data acquisition modules. IC Role / Device Role: Shunts excess current when input exceeds 3.9 V, limiting voltage seen by internal ESD diodes. Use Value: Extends ADC lifetime by absorbing >1000 surges at 1 A peak without degradation, validated per IEC 61000-4-2 Level 4. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZT52C3V9,115 | ±5 % tolerance (3.7–4.1 V range); 5 Ω rdif; same SOD123F package and Ptot. | Acceptable where cost sensitivity outweighs regulation precision; less suitable for closed-loop feedback requiring tight VZ. | Select when budget constraints dominate and ±5 % output tolerance is acceptable in final system spec. |
| MMSZ4684T1G | ±5 % tolerance; 3.9 V nominal; SOD-123 package; 500 mW Ptot; 10 Ω rdif. | Lower power rating limits max Zener current to ~128 mA; higher impedance reduces regulation fidelity under load. | Choose only if legacy BOM mandates ON Semiconductor parts or if thermal margin permits lower Ptot. |
Compared with BZT52H-B3V9,115, the ±5 % BZT52C3V9,115 trades regulation accuracy for cost, while MMSZ4684T1G sacrifices both precision and power handling-making the BZT52H-B3V9,115 optimal for designs needing ±2 % stability and 830 mW thermal headroom.
Availability
BZT52H-B3V9,115 is available at Aetrix Electronics and suitable for power supply feedback, overvoltage clamp, and sensor bias reference applications requiring stable component supply, consistent parametric performance, and long-term manufacturing continuity.
Supply support for BZT52H-B3V9,115 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 automotive-qualified and industrial-grade components.
The BZT52H series belongs to Nexperia's general-purpose Zener diode product line, engineered specifically for stable voltage reference and protection functions in cost-sensitive, space-constrained consumer and industrial electronics.
FAQ
What is the maximum continuous Zener current for BZT52H-B3V9,115 at 70 °C ambient?
At Tamb = 70 °C, derating applies: Ptot = 830 mW − [(70 − 25) × 6.2 mW/°C] = 551 mW. With VZ = 3.9 V, max continuous IZ = 551 mW / 3.9 V ≈ 141 mA. This assumes FR4 PCB mounting with 1 cm² cathode pad per datasheet condition [3].
Can BZT52H-B3V9,115 be used in place of a 3.3 V Zener for logic-level shifting?
No-BZT52H-B3V9,115 has a nominal 3.9 V Zener voltage and is not rated for 3.3 V operation. Using it as a 3.3 V clamp would result in insufficient conduction below 3.82 V, risking undervoltage damage to downstream 3.3 V logic. Select BZT52H-B3V3,115 (3.3 V ±2 %) instead.
Does the SOD123F package support hand-soldering with hot air?
Yes-the SOD123F package is qualified for reflow soldering per JEDEC J-STD-020, and hot-air rework is feasible using a nozzle temperature of 350–380 °C, dwell time <10 s, and preheating to 150 °C. Avoid mechanical stress on leads during cooling to prevent solder joint fracture.
How does the −3.5 to 0.0 mV/K temperature coefficient affect regulation accuracy over −40 to +85 °C?
Across −40 to +85 °C, worst-case ΔVZ = (125 K) × (−3.5 mV/K) = −437.5 mV (low-temp drift) or (125 K) × (0.0 mV/K) = 0 mV (high-temp drift). So VZ shifts from 3.9 V to ~3.46 V at −40 °C, requiring system-level calibration if sub-50 mV error is unacceptable.
BZT52H-B3V9,115 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):
- 3.9 V
- Tolerance:
- ±2%
- Power - Max:
- 375 mW
- Impedance (Max) (Zzt):
- 95 Ohms
- Current - Reverse Leakage @ Vr:
- 3.5 µA @ 1 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-B3V9,115 FAQ
1.How can I place an order for BZT52H-B3V9,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52H-B3V9,115 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-B3V9,115 reliable?
The price and inventory of BZT52H-B3V9,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52H-B3V9,115 is usually 5 days.
3.What payment methods are accepted for BZT52H-B3V9,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52H-B3V9,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52H-B3V9,115?
BZT52H-B3V9,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52H-B3V9,115 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-B3V9,115?
For technical support, including BZT52H-B3V9,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52H-B3V9,115 requirements.
6.How does Aetrix verify that BZT52H-B3V9,115 is sourced from the original manufacturer or authorized distributors?
All BZT52H-B3V9,115 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-B3V9,115 meets industry standards.
7.What is the process for return or replacement of BZT52H-B3V9,115?
All BZT52H-B3V9,115 units undergo pre-shipment inspection (PSI). If there is an issue with BZT52H-B3V9,115, 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-B3V9,115 part is unused and in its original packaging.
Return procedure for BZT52H-B3V9,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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