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Vishay General Semiconductor - Diodes Division BZX84B16-E3-08
- Part No.:
- BZX84B16-E3-08
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX84B16-E3-08.pdf
- Description:
- DIODE ZENER 16V 300MW SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:8,394
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Product details
Overview
BZX84B16-E3-08 from Vishay Semiconductors is a silicon planar Zener diode with nominal zener voltage 16 V, ±2 % tolerance, 5 mA test current, 11.2 Ω dynamic resistance at 1 kHz, and 8 × 10⁻⁴/°C temperature coefficient - used for precision voltage reference and overvoltage protection in low-power analog circuits.
For engineers reviewing the BZX84B16-E3-08 datasheet, BZX84B16-E3-08 pinout, BZX84B16-E3-08 application, or BZX84B16-E3-08 equivalent, key selection criteria include zener voltage tolerance, dynamic impedance, thermal resistance (RthJA = 420 K/W), reverse leakage (≤0.05 μA at VR), and SOT-23 package compatibility with automated assembly.
Technical Context
This device operates as a single-element, two-terminal voltage reference diode with sharp reverse breakdown characteristics. Its ±2 % zener voltage tolerance (tighter than standard ±5 % C-grade variants) enables higher accuracy in regulation and sensing circuits without external trimming.
Designed for operation at 5 mA test current, it delivers stable 16 V regulation under ambient temperatures from –55 °C to +150 °C, with junction temperature limited to 150 °C and thermal resistance junction-to-ambient of 420 K/W on FR-4 board per JEDEC 51-3.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 15.68 V min / 16.00 V nom / 16.32 V max - ensures tight regulation window for feedback loops requiring <±0.32 V deviation. |
| Tolerance | ±2 % - reduces need for post-production calibration in voltage reference designs. |
| Test Current (IZT) | 5 mA - defines operating point where zener voltage and dynamic resistance are specified; matches typical bias currents in op-amp reference circuits. |
| Dynamic Resistance (ZZ) | 11.2 Ω at 1 kHz - determines output impedance under small-signal AC conditions; critical for ripple rejection in LDO pre-regulators. |
| Reverse Leakage (IR) | ≤0.05 μA at VR - minimizes quiescent current draw in battery-powered voltage monitor circuits. |
| Temperature Coefficient (αVZ) | +8 × 10⁻⁴/°C - indicates positive drift; enables predictable compensation when paired with negative-TC components. |
| Power Dissipation (Ptot) | 300 mW on FR-4 board - sets maximum continuous DC power handling without heatsinking in compact PCB layouts. |
Pinout & Package
SOT-23 surface-mount plastic package (9.2 mg weight, UL 94 V-0 flammability rating, MSL level 1 per J-STD-020); lead-free, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Forward conduction terminal | Connected to lower-potential node in reverse-biased configuration; must be routed with adequate current-carrying trace width for transient clamping. |
| Cathode (Pin 2) | Zener breakdown terminal | Connected to regulated voltage node; polarity marking (cathode band) aligns with standard SOT-23 orientation per carrier tape documentation. |
| Collector / Heat Sink (Pin 3) | Thermal and electrical common | Internally tied to cathode in this two-terminal device; serves as primary thermal path to PCB copper pour per JEDEC 51-3 footprint recommendation. |
Key Features
| Feature | Design Value |
|---|---|
| ±2 % Zener voltage tolerance | Enables direct use in 1% reference applications without trimming resistors or digital calibration. |
| ESD robustness (HBM > 8 kV, MM > 800 V) | Reduces risk of field failure during handling and board-level ESD events in industrial control modules. |
| SOT-23 footprint compatibility | Supports high-density placement and reflow soldering with standard pick-and-place equipment and IPC-A-610 Class 2/3 process windows. |
| Junction temperature range (–55 °C to +150 °C) | Validates operation in automotive under-hood and industrial motor drive environments without derating below –40 °C. |
| Low reverse leakage (≤0.05 μA) | Preserves battery life in always-on voltage supervision circuits for IoT sensor nodes and backup power monitors. |
Applications
| ADC Reference Buffer | Power Supply Monitor |
|---|---|
Use Scenario: Providing stable 16 V reference to SAR ADC driver amplifier in data acquisition front-end. IC Role / Device Role / Timing Role: Precision voltage reference source establishing full-scale input range for analog signal conditioning chain. Use Value: ±2 % tolerance and 11.2 Ω dynamic resistance minimize code-width variation and improve effective number of bits (ENOB) at 16-bit resolution. | Use Scenario: Detecting undervoltage condition in 24 V industrial PLC I/O module power rail. IC Role / Device Role / Timing Role: Threshold detector feeding comparator input; reverse-biased to conduct only when rail drops below 16 V. Use Value: Low 0.05 μA leakage ensures minimal loading on monitored rail, preserving accuracy across temperature extremes. |
| Overvoltage Clamp | Op-Amp Bias Network |
Use Scenario: Protecting microcontroller GPIO pins from transient surges on 15 V sensor interface lines. IC Role / Device Role / Timing Role: Shunt clamp limiting voltage excursion to ≤16.32 V during ESD or inductive kick events. Use Value: 300 mW power rating and 420 K/W RthJA allow safe dissipation of 100 ns/1 A transients without thermal runaway on standard FR-4. | Use Scenario: Generating precise bias voltage for rail-to-rail op-amp stage in battery-powered medical instrumentation. IC Role / Device Role / Timing Role: Fixed-voltage node stabilizing common-mode input level in differential amplifiers. Use Value: +8 × 10⁻⁴/°C temperature coefficient allows predictable tracking against op-amp input offset drift in closed-loop calibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84C16-E3-08 | ±5 % zener voltage tolerance (vs. ±2 %), otherwise identical electrical specs and SOT-23 package | Acceptable where system-level calibration compensates for initial tolerance; not suitable for open-loop reference designs | Select BZX84C16-E3-08 only if cost sensitivity outweighs need for guaranteed 16.00 V ±0.32 V performance at 25 °C. |
| MMSZ4687T1G | 16 V nominal, ±5 % tolerance, 15 Ω dynamic resistance, 500 mW Ptot, SOD-123 package | Higher power rating but larger footprint; less stable regulation due to higher ZZ and wider tolerance | Choose MMSZ4687T1G only when board layout permits SOD-123 and thermal margin exceeds 300 mW requirement. |
Compared with BZX84C16-E3-08, the BZX84B16-E3-08 offers tighter voltage control essential for uncalibrated references; versus MMSZ4687T1G, it provides superior impedance matching and smaller form factor at the expense of 200 mW lower power headroom.
Availability
BZX84B16-E3-08 is available at Aetrix Electronics and suitable for precision voltage reference, overvoltage protection, and power supply monitoring applications requiring stable component supply, consistent parametric performance, and long-term manufacturing continuity.
Supply support for BZX84B16-E3-08 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 Semiconductors is a global supplier of discrete semiconductors, specializing in diodes, MOSFETs, optoelectronics, and passive components with emphasis on reliability and automotive qualification.
The BZX84 series belongs to Vishay's small-signal Zener diode product line, engineered for high-accuracy voltage regulation and transient suppression in space-constrained, thermally demanding applications such as automotive ECUs and industrial sensors.
FAQ
What is the zener voltage tolerance of BZX84B16-E3-08?
The BZX84B16-E3-08 has a zener voltage tolerance of ±2 %, meaning its nominal 16 V breakdown occurs between 15.68 V and 16.32 V at 5 mA test current and 25 °C ambient. This tighter tolerance distinguishes it from the ±5 % BZX84C16-E3-08 variant and supports applications requiring higher initial accuracy without calibration.
Is BZX84B16-E3-08 qualified for automotive use?
The BZX84B16-E3-08 itself is not AEC-Q101 qualified; that status applies only to variants with "-HE3_A" suffix (e.g., BZX84B16-HE3_A-08). However, its construction uses the same silicon die and SOT-23 package as qualified versions, and it meets commercial-grade reliability standards including >8 kV HBM ESD rating and –55 °C to +150 °C operating range.
What is the maximum power dissipation of BZX84B16-E3-08 on a standard FR-4 PCB?
The BZX84B16-E3-08 has a maximum power dissipation of 300 mW when mounted on an FR-4 board with the recommended soldering footprint per JEDEC 51-3. This value assumes natural convection cooling and accounts for thermal resistance junction-to-ambient (RthJA = 420 K/W); exceeding this limit risks junction temperature exceeding 150 °C.
Does BZX84B16-E3-08 have a specified dynamic resistance?
Yes, the BZX84B16-E3-08 has a dynamic resistance (ZZ) of 11.2 Ω measured at 1 kHz and 5 mA test current. This parameter quantifies AC impedance near the breakdown knee and directly affects ripple rejection in regulated supplies - lower values indicate stiffer voltage regulation under varying load conditions.
What is the reverse leakage current specification for BZX84B16-E3-08?
The reverse leakage current (IR) for BZX84B16-E3-08 is specified as ≤0.05 μA at rated reverse voltage (VR), measured at 25 °C ambient. This ultra-low leakage supports energy-efficient operation in always-on monitoring circuits and preserves battery runtime in portable instrumentation using the BZX84B16-E3-08 as a reference or clamp.
BZX84B16-E3-08 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Series:
- BZX84
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 16 V
- Tolerance:
- ±2%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 40 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 11.2 V
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- -55°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
BZX84B16-E3-08 FAQ
1.How can I place an order for BZX84B16-E3-08 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84B16-E3-08 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 BZX84B16-E3-08 reliable?
The price and inventory of BZX84B16-E3-08 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84B16-E3-08 is usually 5 days.
3.What payment methods are accepted for BZX84B16-E3-08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84B16-E3-08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84B16-E3-08?
BZX84B16-E3-08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84B16-E3-08 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 BZX84B16-E3-08?
For technical support, including BZX84B16-E3-08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84B16-E3-08 requirements.
6.How does Aetrix verify that BZX84B16-E3-08 is sourced from the original manufacturer or authorized distributors?
All BZX84B16-E3-08 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 BZX84B16-E3-08 meets industry standards.
7.What is the process for return or replacement of BZX84B16-E3-08?
All BZX84B16-E3-08 units undergo pre-shipment inspection (PSI). If there is an issue with BZX84B16-E3-08, 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 BZX84B16-E3-08 part is unused and in its original packaging.
Return procedure for BZX84B16-E3-08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84B16-E3-08 Tags
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MMBZ5240B-7-F
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