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Nexperia USA Inc. BZT52-C47J
- Part No.:
- BZT52-C47J
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
BZT52-C47J.pdf
- Description:
- DIODE ZENER 47V 350MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:350
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Product details
Overview
BZT52-C47J from Nexperia is a ±5 % tolerance Zener diode in SOD123 package, rated for 47 V nominal Zener voltage at IZ = 2 mA, with 325 Ω maximum differential resistance and 90 μA reverse current at VR = 40 V, used for precision voltage reference and low-power regulation in power supply feedback paths.
For engineers reviewing the BZT52-C47J datasheet, BZT52-C47J pinout, BZT52-C47J application, or BZT52-C47J equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (Rth(j-sp) = 210 K/W), non-repetitive surge capability (IZSM = 0.5 A), and SOD123 footprint compatibility with automated SMT assembly.
Technical Context
This device operates as a two-terminal voltage reference diode, conducting in reverse breakdown to maintain stable 47 V across its terminals within ±5 % tolerance when biased at 2 mA. Its low differential resistance (≤325 Ω) ensures minimal voltage variation under load changes, while temperature coefficient of +32.9 mV/K at IZ = 5 mA defines predictable drift behavior over operating range.
Designed for surface-mount use on FR4 PCBs with single-sided copper, it delivers 590 mW total power dissipation at Tamb ≤ 25 °C and withstands non-repetitive reverse surges up to 40 W for 100 μs-enabling robust transient suppression in regulated DC rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 44.0 V to 50.0 V at IZ = 2 mA - defines regulation window for feedback loop stability in 48 V systems |
| Differential Resistance (rdif) | ≤325 Ω - limits output voltage deviation under ±1 mA load change in reference circuits |
| Reverse Current (IR) | ≤90 μA at VR = 40 V - ensures low leakage in high-impedance bias networks |
| Power Dissipation (Ptot) | 590 mW at Tamb ≤ 25 °C - supports continuous operation in compact PCB layouts with minimal heatsinking |
| Thermal Resistance (Rth(j-sp)) | 210 K/W - enables accurate junction temperature estimation from solder point measurement |
| Non-repetitive Surge (IZSM) | 0.5 A for tp = 100 μs - provides transient overvoltage clamping without degradation |
| Junction Temperature (Tj) | −55 °C to +150 °C - supports industrial and extended-temperature embedded applications |
Pinout & Package
The BZT52-C47J uses the SOD123 surface-mount plastic package (2.80 mm × 1.70 mm × 1.30 mm), optimized for reflow soldering with standardized footprint per Figure 12 (0.81 mm pad width, 2.36 mm pad length, 3.27 mm center-to-center spacing).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Marked side) | Cathode (K) | Connected to regulated output node; marking band identifies polarity for correct orientation during placement |
| 2 | Anode (A) | Connected to ground or lower-potential rail; forms reverse-biased path enabling Zener conduction |
Key Features
| Feature | Design Value |
|---|---|
| ±5 % Zener voltage tolerance | Enables cost-effective voltage referencing where tight regulation is secondary to reliability and footprint |
| Low differential resistance (≤325 Ω) | Reduces output impedance in shunt regulator configurations, improving line/load regulation by <15 mV per mA |
| SOD123 package with standard reflow footprint | Ensures compatibility with high-speed pick-and-place equipment and IPC-7351-compliant land patterns |
| 150 °C maximum junction temperature | Supports operation in thermally constrained enclosures without derating below 125 °C ambient |
| Non-repetitive surge rating (0.5 A, 100 μs) | Provides inherent transient immunity in DC-DC converter feedback nodes without external TVS |
Applications
| Industrial Power Supply Feedback | Automotive Body Control Module Reference |
|---|---|
Use Scenario: Stabilizing error amplifier input in isolated flyback converters delivering 48 V output. IC Role / Device Role / Timing Role: Shunt voltage reference providing precise 47 V setpoint to TL431-like controller IC. Use Value: Maintains ±1.5 % output regulation across 10–100 % load due to low rdif and stable VZ drift. |
Use Scenario: Generating stable bias voltage for LIN transceiver VREF input in 12 V vehicle subsystems. IC Role / Device Role / Timing Role: Low-leakage Zener source ensuring consistent transceiver threshold despite battery voltage fluctuations. Use Value: Delivers <90 μA IR at 40 V, preventing false wake-up events caused by reference instability. |
| IoT Sensor Node Voltage Clamp | Programmable Logic Controller Input Protection |
Use Scenario: Clamping analog front-end inputs exposed to ESD or inductive kick in battery-powered sensors. IC Role / Device Role / Timing Role: Fast-response Zener clamp limiting voltage spikes to 50 V before reaching ADC input stage. Use Value: Absorbs 0.5 A surges for 100 μs without parametric shift, preserving signal chain accuracy. |
Use Scenario: Protecting 24 V digital input channels against field-wiring transients in factory automation racks. IC Role / Device Role / Timing Role: Primary overvoltage limiter placed ahead of optocoupler input circuitry. Use Value: Withstands repeated 40 V/100 ms surges per IEC 61000-4-4, reducing optocoupler failure rate by >90 %. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor MMBZ5269BS | Same 47 V nominal, ±5 %, but SOT-23 package (higher Rth(j-a) = 375 K/W) | Less suitable for high-power density designs due to inferior thermal performance | Select only if existing SOT-23 footprint reuse is required and power dissipation remains <200 mW |
| Vishay BZX84-C47 | Same 47 V, ±5 %, but SOT-23 package and higher rdif (≤400 Ω) | Higher dynamic impedance reduces regulation accuracy under varying load conditions | Prefer for legacy SOT-23 designs where board space allows thermal margin; avoid in precision feedback |
Compared with MMBZ5269BS and BZX84-C47, BZT52-C47J offers superior thermal coupling (Rth(j-sp) = 210 K/W vs. ≥375 K/W) and tighter dynamic impedance control-critical for maintaining regulation accuracy in space-constrained, thermally active environments.
Availability
BZT52-C47J is available at Aetrix Electronics and suitable for industrial power supplies, automotive body electronics, IoT sensor protection, and PLC input conditioning requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for BZT52-C47J 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, serving automotive, industrial, and consumer markets with ISO/TS 16949-certified manufacturing.
The BZT52 series targets cost-sensitive, space-constrained voltage regulation and clamping applications-designed specifically for SMT scalability, thermal efficiency, and robustness in harsh ambient conditions.
FAQ
What is the Zener test current for BZT52-C47J?
The BZT52-C47J is characterized at IZ = 2 mA for Zener voltage specification, as confirmed in Table 9 of the datasheet. This differs from lower-voltage variants tested at 5 mA and aligns with optimal stability for 47 V devices under typical bias conditions.
Can BZT52-C47J be used in place of a 48 V Zener diode?
Yes-its 44.0 V to 50.0 V Zener range at 2 mA fully covers 48 V nominal requirements. The ±5 % tolerance yields ±2.4 V deviation, making it suitable for applications where 48 V ±5 % is acceptable, such as non-critical biasing or clamping functions.
How does the SOD123 package affect thermal performance?
The SOD123 package achieves Rth(j-sp) = 210 K/W to the cathode solder point, significantly better than SOT-23 alternatives (≥375 K/W). This allows 590 mW dissipation at 25 °C ambient without heatsinking-critical for dense PCB layouts.
Is BZT52-C47J automotive qualified?
No-per Section 13 of the datasheet, BZT52-C47J is non-automotive qualified. Nexperia explicitly states that C-series parts are not tested to AEC-Q200 and recommends dedicated -Q automotive variants for safety-critical vehicle systems.
BZT52-C47J Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 47 V
- Tolerance:
- ±6.4%
- Power - Max:
- 350 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:
- -55°C ~ 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123
BZT52-C47J FAQ
1.How can I place an order for BZT52-C47J through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52-C47J 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 BZT52-C47J reliable?
The price and inventory of BZT52-C47J are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52-C47J is usually 5 days.
3.What payment methods are accepted for BZT52-C47J?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52-C47J transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52-C47J?
BZT52-C47J orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52-C47J 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 BZT52-C47J?
For technical support, including BZT52-C47J datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52-C47J requirements.
6.How does Aetrix verify that BZT52-C47J is sourced from the original manufacturer or authorized distributors?
All BZT52-C47J 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 BZT52-C47J meets industry standards.
7.What is the process for return or replacement of BZT52-C47J?
All BZT52-C47J units undergo pre-shipment inspection (PSI). If there is an issue with BZT52-C47J, 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 BZT52-C47J part is unused and in its original packaging.
Return procedure for BZT52-C47J:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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