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Vishay General Semiconductor - Diodes Division BZT52C3V0-E3-18
- Part No.:
- BZT52C3V0-E3-18
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
BZT52C3V0-E3-18.pdf
- Description:
- DIODE ZENER 3V 410MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:8,329
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Product details
Overview
BZT52C3V0-E3-18 from Vishay Semiconductors is a silicon planar Zener diode rated for 3.0 V nominal zener voltage with ±5% tolerance, 5 mA test current, and 500 mW maximum power dissipation on FR-4 board with recommended footprint. It operates across -55 °C to +150 °C and serves as a precision voltage reference or overvoltage clamp in low-power analog sensor signal conditioning circuits.
For engineers reviewing the BZT52C3V0-E3-18 datasheet, BZT52C3V0-E3-18 pinout, BZT52C3V0-E3-18 application, or BZT52C3V0-E3-18 equivalent, key selection criteria include its SOD-123 package thermal resistance (RthJA = 420 K/W), dynamic impedance (95 Ω at 5 mA), temperature coefficient (-9 to -3 × 10⁻⁴/°C), and AEC-Q101 non-qualified commercial-grade qualification status.
Technical Context
This discrete Zener diode uses a silicon planar junction structure optimized for stable reverse-bias breakdown at precisely graded voltages per E24 standard. Its single-element configuration supports unidirectional clamping or reference functions without series or parallel internal topology.
Designed for surface-mount assembly on standard FR-4 PCBs, it features MSL level 1 moisture sensitivity and UL 94 V-0 molding compound. The cathode-marked SOD-123 package enables automated optical orientation during tape-and-reel handling per JEDEC-compliant carrier tape specifications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 2.85–3.15 V at 5 mA test current - defines tight regulation window for 3.0 V reference applications |
| Power Dissipation (Ptot) | 300 mW on FR-4 board - sets maximum continuous clamping energy before thermal derating |
| Dynamic Resistance (ZZ) | 95 Ω at IZT = 5 mA - determines output impedance and load regulation sensitivity |
| Temperature Coefficient (αVZ) | -9 to -3 × 10⁻⁴/°C - indicates negative drift with temperature, critical for ambient-compensated designs |
| Reverse Leakage (IR) | < 10 µA at 1 V - ensures minimal quiescent current in high-impedance bias networks |
| Thermal Resistance (RthJA) | 420 K/W - quantifies junction-to-ambient heat transfer efficiency on standard layout |
| Operating Temperature | -55 °C to +150 °C - supports industrial and under-hood automotive environments |
Pinout & Package
SOD-123 surface-mount plastic package with cathode bar marking; 2.7 mm × 1.55 mm body, 0.85 mm height, and 0.55 mm lead pitch. Designed for reflow soldering with peak temperature ≤ 260 °C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential node in reverse-bias clamping configuration |
| Cathode | Zener breakdown terminal | Marked with bar; connected to higher-potential node to enable controlled avalanche conduction |
Key Features
| Feature | Design Value |
|---|---|
| Silicon planar Zener structure | Enables precise, repeatable breakdown voltage grading per E24 standard across production lots |
| E24-standard voltage grading | Ensures interchangeability with other 3.0 V Zeners in legacy designs requiring ±5% tolerance |
| MSL level 1 rating | Permits indefinite dry storage and eliminates bake-out requirement prior to reflow assembly |
| UL 94 V-0 molding compound | Meets flammability safety requirements for consumer and industrial end equipment |
| RoHS-compliant construction | Supports compliance with EU Directive 2011/65/EU and global environmental regulations |
Applications
| Industrial Sensor Signal Conditioning | USB Port Overvoltage Protection |
|---|---|
Use Scenario: Stabilizing reference voltage for 12-bit ADC front-end in temperature/humidity transmitters operating from 3.3 V rails. IC Role / Device Role / Timing Role: Zener diode providing low-drift 3.0 V reference to op-amp buffer stage driving ADC input. Use Value: Maintains <±0.5% reference accuracy over -40 °C to +85 °C due to predictable αVZ and low dynamic impedance. | Use Scenario: Clamping transient surges on USB D+ line during hot-plug events in embedded host controllers. IC Role / Device Role / Timing Role: Standalone shunt protector diverting >100 V spikes to ground before reaching PHY IC. Use Value: Limits clamped voltage to ≤3.15 V at 5 mA, preventing damage to 3.3 V tolerant I/O structures. |
| Low-Power IoT Node Voltage Regulation | Automotive Cabin Control Panel Reference |
Use Scenario: Generating stable bias point for ultra-low-power microcontroller reset circuit powered by coin cell. IC Role / Device Role / Timing Role: Zener-based voltage divider establishing threshold for external reset supervisor IC. Use Value: Draws only 0.5 µA leakage at 2.5 V, extending battery life beyond 5 years in sleep mode. | Use Scenario: Providing calibrated reference for LED brightness control DAC in HVAC interface panel. IC Role / Device Role / Timing Role: Precision 3.0 V source for 8-bit DAC VREF input in 12 V automotive system. Use Value: Delivers stable output across -40 °C to +105 °C ambient, meeting AEC-Q200 Class 2 thermal requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5223BLT1G | Same 3.0 V nominal, ±5% tolerance, but SOT-23 package (RthJA = 350 K/W) and higher leakage (≤5 µA @ 1 V) | Higher thermal performance allows tighter layout spacing; higher leakage limits use in nanoamp bias networks | Select when board space permits SOT-23 and lower thermal resistance is prioritized over ultra-low leakage |
| BZX384-C3V0 | Same 3.0 V, ±5%, but SOD-323 package (smaller footprint) and different tempco (-7 to -2 × 10⁻⁴/°C) | Smaller size suits dense portable designs; slightly less negative tempco reduces cold-temperature drift | Select when PCB area is constrained and moderate tempco variation is acceptable |
Compared with BZT52C3V0-E3-18, MMBZ5223BLT1G offers better thermal dissipation but higher leakage, while BZX384-C3V0 saves board area at the cost of reduced thermal margin and altered temperature drift behavior - both require layout review due to differing footprints and thermal profiles.
Availability
BZT52C3V0-E3-18 is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, USB port overvoltage protection, and low-power IoT node voltage regulation requiring stable component supply and RoHS-compliant sourcing.
Supply support for BZT52C3V0-E3-18 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
Vishay Intertechnology is a global semiconductor manufacturer specializing in discrete components, sensors, and passive elements with emphasis on reliability and precision.
The BZT52 series targets cost-sensitive, high-volume applications requiring standardized Zener references in compact SMD packages, particularly for consumer, industrial, and computing power management subsystems.
FAQ
What is the maximum continuous power dissipation for BZT52C3V0-E3-18 on a standard FR-4 PCB?
The BZT52C3V0-E3-18 has a maximum continuous power dissipation of 300 mW when mounted on an FR-4 board using Vishay's recommended soldering footprint. This value drops to 500 mW only under ideal lead-to-heat-sink conditions (RthJL = 250 K/W), which are not typical in standard PCB layouts. Designers must apply thermal derating above 25 °C ambient per the published curve in Figure 1 of the datasheet.
Does BZT52C3V0-E3-18 meet AEC-Q101 automotive qualification standards?
No, BZT52C3V0-E3-18 is the commercial-grade variant (E3 suffix) and is not AEC-Q101 qualified. For automotive applications, the equivalent AEC-Q101 qualified part is BZT52C3V0-HE3_A-18, which shares identical electrical characteristics but undergoes additional stress testing per AEC-Q101 Rev D. Always verify qualification status via the full ordering code before automotive deployment.
What is the cathode identification method for BZT52C3V0-E3-18 in the SOD-123 package?
The cathode of BZT52C3V0-E3-18 is marked by a distinct bar printed on the top surface of the SOD-123 package body, aligned with the shorter lead side. This marking is visible under standard optical inspection and matches the orientation diagram in the carrier tape specification (Document no.: S8-V-3717.10-003). Correct orientation is essential to ensure proper reverse-bias operation.
Can BZT52C3V0-E3-18 be used as a substitute for BZT52B3V0-E3-18 in a design?
BZT52C3V0-E3-18 and BZT52B3V0-E3-18 share identical nominal voltage (3.0 V) and package but differ in tolerance: C-grade is ±5%, while B-grade is ±2%. Substitution is electrically permissible if the ±5% tolerance meets system accuracy requirements; however, B-grade parts exhibit tighter distribution (2.94–3.06 V vs. 2.85–3.15 V), so validation of worst-case voltage margins is required before replacement.
What is the dynamic impedance of BZT52C3V0-E3-18 and why does it matter in precision reference designs?
The dynamic impedance (ZZ) of BZT52C3V0-E3-18 is 95 Ω at 5 mA test current. This parameter directly impacts output regulation: for every 1 mA change in load current, the reference voltage shifts by ~95 mV. In precision applications like ADC references, this necessitates buffering with a low-output-impedance op-amp or limiting load current variation to maintain stability within required error bands.
BZT52C3V0-E3-18 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Series:
- BZT52
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 3 V
- Tolerance:
- ±5%
- Power - Max:
- 410 mW
- Impedance (Max) (Zzt):
- 95 Ohms
- Current - Reverse Leakage @ Vr:
- -
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- -55°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123
BZT52C3V0-E3-18 FAQ
1.How can I place an order for BZT52C3V0-E3-18 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52C3V0-E3-18 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 BZT52C3V0-E3-18 reliable?
The price and inventory of BZT52C3V0-E3-18 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52C3V0-E3-18 is usually 5 days.
3.What payment methods are accepted for BZT52C3V0-E3-18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52C3V0-E3-18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52C3V0-E3-18?
BZT52C3V0-E3-18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52C3V0-E3-18 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 BZT52C3V0-E3-18?
For technical support, including BZT52C3V0-E3-18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52C3V0-E3-18 requirements.
6.How does Aetrix verify that BZT52C3V0-E3-18 is sourced from the original manufacturer or authorized distributors?
All BZT52C3V0-E3-18 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 BZT52C3V0-E3-18 meets industry standards.
7.What is the process for return or replacement of BZT52C3V0-E3-18?
All BZT52C3V0-E3-18 units undergo pre-shipment inspection (PSI). If there is an issue with BZT52C3V0-E3-18, 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 BZT52C3V0-E3-18 part is unused and in its original packaging.
Return procedure for BZT52C3V0-E3-18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZT52C3V0-E3-18 Tags
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