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Nexperia USA Inc. BZT52H-B47,115
- Part No.:
- BZT52H-B47,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
BZT52H-B47,115.pdf
- Description:
- DIODE ZENER 47V 375MW SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:287
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Product details
Overview
BZT52H-B47,115 from Nexperia is a ±2 % tolerance Zener diode in SOD123F package, rated for 47 V nominal breakdown voltage at IZ = 2 mA, 830 mW total power dissipation at Tamb ≤ 25 °C, and designed for precision voltage regulation in low-power analog reference and overvoltage protection circuits.
For engineers reviewing the BZT52H-B47,115 datasheet, BZT52H-B47,115 pinout, BZT52H-B47,115 application, or BZT52H-B47,115 equivalent, this device serves as a stable, surface-mount voltage reference with verified thermal resistance (Rth(j-sp) = 150 K/W), low differential resistance (325 Ω max), and controlled temperature coefficient (±0.05 mV/K) - critical for industrial sensor biasing and power supply feedback networks.
Technical Context
This Zener diode operates in reverse-biased avalanche mode to maintain a stable 47 V reference across its terminals under regulated current conditions. Its design targets low-current applications (IZ = 2 mA typical), with guaranteed reverse current < 90 μA at VR = 37.6 V and non-repetitive peak reverse current of 0.5 A for 100 μs pulses.
The SOD123F package enables compact PCB layout while delivering defined thermal performance: Rth(j-a) = 330 K/W in free air and Rth(j-sp) = 150 K/W to solder point on FR4 with tin-plated copper. Its cathode-anode polarity is marked by a bar on the device body, aligning with standardized SMD orientation practices.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage (VZ) | 46.1 V to 47.9 V at IZ = 2 mA - ensures tight regulation window for 47 V reference designs |
| Tolerance | ±2 % - supports mid-precision applications where cost and accuracy are balanced |
| Total Power Dissipation (Ptot) | 830 mW at Tamb ≤ 25 °C - defines maximum continuous DC power handling on standard FR4 PCB |
| Differential Resistance (rdif) | ≤ 325 Ω at IZ = 2 mA - determines output impedance and load regulation sensitivity |
| Reverse Current (IR) | ≤ 90 μA at VR = 37.6 V - confirms low leakage below knee voltage, critical for standby power integrity |
| Temperature Coefficient (SZ) | ±0.05 mV/K - enables predictable drift compensation in temperature-stable references |
| Forward Voltage (VF) | ≤ 0.9 V at IF = 10 mA - defines conduction loss when used in forward-biased clamp or ESD path |
Pinout & Package
SOD123F is a 2-pin surface-mount plastic package measuring 3.6 mm × 1.7 mm × 1.0 mm (L × W × H), with gull-wing leads and cathode-marked body. Mounting requires reflow only; footprint uses 2.8 mm × 1.2 mm solder lands per pad with 1.1 mm spacing.
| 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; reverse-bias current flows from cathode to anode during regulation |
Key Features
| Feature | Design Value |
|---|---|
| Stable 47 V reference | Guaranteed 46.1–47.9 V at 2 mA enables accurate feedback in 48 V system monitors |
| Low thermal resistance | Rth(j-sp) = 150 K/W allows reliable operation up to 150 °C junction temperature on standard PCB |
| Controlled leakage | IR ≤ 90 μA at 80 % VZ minimizes quiescent current in battery-backed voltage supervisors |
| Robust surge capability | 0.5 A non-repetitive peak reverse current (100 μs) supports transient overvoltage clamping |
| Standardized marking | "EA" code per Table 4 confirms BZT52H-B47 identity on device body for traceability and assembly verification |
Applications
| Industrial Sensor Biasing | Power Supply Feedback Reference |
|---|---|
|
Use Scenario: Providing stable excitation voltage to resistive temperature detectors (RTDs) in PLC analog input modules. IC Role / Device Role / Timing Role: Zener voltage reference establishing fixed 47 V bias point for ratiometric measurement circuitry. Use Value: ±2 % tolerance and ±0.05 mV/K temperature coefficient ensure < 0.1 % full-scale error drift over –40 °C to +85 °C ambient range. |
Use Scenario: Setting output voltage threshold in isolated flyback converter feedback loop using optocoupler-coupled TL431 replacement. IC Role / Device Role / Timing Role: Precision shunt regulator defining secondary-side voltage reference before optocoupler input. Use Value: 325 Ω differential resistance and 830 mW power rating support stable regulation under 1–5 mA feedback current without thermal runaway. |
| Overvoltage Clamp Protection | Microcontroller Reset Circuit |
|
Use Scenario: Protecting 48 V CAN transceiver inputs against load-dump transients in automotive body electronics (non-automotive qualified; used in industrial variants). IC Role / Device Role / Timing Role: Reverse-biased Zener clamping surge energy above 47 V to safe levels before IC input pins. Use Value: 0.5 A non-repetitive peak reverse current rating handles 100 μs surges per ISO 7637-2 Pulse 1/2a without degradation. |
Use Scenario: Generating clean reset signal for ARM Cortex-M0+ microcontrollers during brown-out conditions in smart meter designs. IC Role / Device Role / Timing Role: Zener-based voltage monitor triggering external reset supervisor when 48 V rail drops below 40 V. Use Value: Low 90 μA reverse leakage at 37.6 V ensures minimal current draw during long-term battery backup operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZT52H-C47 | ±5 % tolerance (44–50 V range); higher max IR (100 μA at VR = 37.6 V) | Acceptable where cost priority outweighs regulation precision; less suitable for RTD biasing | Select for cost-sensitive industrial controls where 47 V ±5 % meets functional safety margin |
| MMSZ5275B-TP | ±5 % tolerance; SOD-123 package (not SOD123F); Ptot = 500 mW; rdif = 500 Ω | Lower power and higher impedance limit use in high-accuracy feedback loops | Choose only if legacy board reuse requires identical footprint but tolerates reduced regulation stability |
Compared with BZT52H-C47 and MMSZ5275B-TP, BZT52H-B47,115 delivers tighter voltage control (±2 % vs. ±5 %), lower dynamic impedance (325 Ω vs. ≥500 Ω), and higher power headroom (830 mW vs. 500 mW), making it optimal for precision analog sensing and regulated power feedback where stability and thermal margin are critical.
Availability
BZT52H-B47,115 is available at Aetrix Electronics and suitable for industrial sensor biasing, power supply feedback reference, overvoltage clamp protection, and microcontroller reset circuit applications requiring stable component supply with consistent parametric performance across production batches.
Supply support for BZT52H-B47,115 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 logic, discrete, and MOSFET solutions, with manufacturing rooted in process efficiency and automotive-grade quality systems.
The BZT52H series belongs to Nexperia's general-purpose Zener diode product line, engineered for cost-effective, space-constrained voltage regulation in consumer, industrial, and computing applications - emphasizing SMD compatibility, parametric consistency, and thermal robustness in compact packages.
FAQ
What is the maximum continuous reverse current for BZT52H-B47,115 at 25 °C ambient?
The device is rated for continuous operation at up to 250 mA forward current, but as a Zener regulator, its reverse (Zener) current is limited by power dissipation. At Tamb = 25 °C, maximum steady-state Zener current is 17.6 mA (830 mW ÷ 47 V), assuming ideal heat sinking. Derating applies above 25 °C per the thermal resistance curve.
Can BZT52H-B47,115 be used in automotive applications?
No - this part is explicitly non-automotive qualified per Nexperia's revision history (Rev. 7, Jan 2023). It lacks AEC-Q200 stress testing and automotive-grade screening. For automotive use, Nexperia offers separate -Q qualified variants (e.g., BZT52H-B47,115-Q), which must be specified and sourced independently.
How does the SOD123F package differ from standard SOD-123 in thermal performance?
SOD123F features a flat lead profile with enhanced thermal pad contact area versus traditional gull-wing SOD-123. This yields Rth(j-sp) = 150 K/W (vs. ~200 K/W typical for SOD-123), improving power handling by ~25 % under identical PCB layout. The flat leads also reduce tombstoning risk during reflow.
What is the significance of the "EA" marking on the device body?
"EA" is the manufacturer-assigned marking code for BZT52H-B47 per Table 4 of the datasheet. It uniquely identifies the 47 V, ±2 % variant within the BZT52H series and confirms compliance with the specified electrical parameters - essential for post-solder inspection and counterfeit detection.
BZT52H-B47,115 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):
- 47 V
- Tolerance:
- ±2%
- Power - Max:
- 375 mW
- Impedance (Max) (Zzt):
- 90 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 32.9 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-B47,115 FAQ
1.How can I place an order for BZT52H-B47,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52H-B47,115 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-B47,115 reliable?
The price and inventory of BZT52H-B47,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52H-B47,115 is usually 5 days.
3.What payment methods are accepted for BZT52H-B47,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52H-B47,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52H-B47,115?
BZT52H-B47,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52H-B47,115 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-B47,115?
For technical support, including BZT52H-B47,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52H-B47,115 requirements.
6.How does Aetrix verify that BZT52H-B47,115 is sourced from the original manufacturer or authorized distributors?
All BZT52H-B47,115 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-B47,115 meets industry standards.
7.What is the process for return or replacement of BZT52H-B47,115?
All BZT52H-B47,115 units undergo pre-shipment inspection (PSI). If there is an issue with BZT52H-B47,115, 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-B47,115 part is unused and in its original packaging.
Return procedure for BZT52H-B47,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZT52H-B47,115 Tags
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