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Vishay BZD27B3V9P-HM3_A08
- Part No.:
- BZD27B3V9P-HM3_A08
- Manufacturer:
- Vishay
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
BZD27B3V9P-HM3_A08.pdf
- Description:
- ZENER DIODE SMF DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,132
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Product details
Overview
BZD27B3V9P-HM3_A08 from Vishay Semiconductors is a silicon planar Zener diode optimized for precision voltage regulation and transient overvoltage protection in automotive-grade power rails, with nominal Zener voltage 3.9 V ±2 %, 100 mA test current, 150 W peak surge power rating (10/1000 μs), and AEC-Q101 qualification.
For engineers reviewing the BZD27B3V9P-HM3_A08 datasheet, BZD27B3V9P-HM3_A08 pinout, BZD27B3V9P-HM3_A08 application, or BZD27B3V9P-HM3_A08 equivalent, key selection criteria include its ±2 % VZ tolerance at IZT = 100 mA, low dynamic resistance (4 Ω typ.), negative temperature coefficient (−0.14 to −0.04 %/°C), and DO-219AB (SMF) package compatibility with high-reliability automotive PCB layouts.
Technical Context
This device operates as a unidirectional, single-junction Zener diode with specified breakdown behavior under both regulation (DC bias) and transient suppression (pulse conditions). Its electrical characteristics are defined at TA = 25 °C, with thermal resistance RthJA = 180 K/W on 3 mm × 3 mm Cu pads and RthJL = 30 K/W, enabling stable operation up to TJ = 175 °C.
The BZD27B3V9P-HM3_A08 delivers clamping performance with VC = 11.8 V at IRSM = 1200 A (10/1000 μs), reverse leakage IR ≤ 50 μA at VR = 3.12 V, and forward voltage VF ≤ 1.2 V at IF = 0.2 A - all verified per AEC-Q101 stress testing including JESD201 Class 2 whisker resistance and 260 °C reflow compatibility.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener voltage VZ | 3.82 V min. to 3.98 V max. at IZT = 100 mA - ensures tight DC regulation tolerance for 3.3 V rail stabilization |
| Surge power PRSM | 150 W (10/1000 μs waveform) - supports IEC 61000-4-5 Level 4 transient immunity in automotive ECUs |
| Dynamic resistance ZZ | 4 Ω typical at IZT = 100 mA - minimizes output voltage deviation under load transients |
| Temp. coefficient αVZ | −0.14 to −0.04 %/°C - enables predictable drift compensation in wide-temperature environments |
| Clamping voltage VC | 11.8 V at IRSM = 1200 A - defines maximum protected node voltage during surge events |
| Package | DO-219AB (SMF) - low-profile SMD footprint (2.7 × 3.5 × 0.85 mm) compatible with automated assembly and high-density layouts |
| AEC-Q101 status | Qualified - validated for automotive applications including engine control, body electronics, and ADAS power domains |
Pinout & Package
DO-219AB (SMF) surface-mount package: cathode-marked anode-cathode configuration with 2-terminal unidirectional polarity; dimensions 2.7 mm × 3.5 mm × 0.85 mm; MSL level 1, 260 °C peak reflow profile compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to lower-potential side of protected circuit; enables standard diode rectification path |
| Cathode | Current exit point during reverse breakdown | Connected to higher-potential rail; defines regulated Zener reference node and surge shunt path |
Key Features
| Feature | Design Value |
|---|---|
| ±2 % VZ tolerance at IZT | Enables precise 3.3 V rail regulation without external trimming components in cost-sensitive automotive modules |
| 150 W peak surge rating (10/1000 μs) | Meets ISO 7637-2 Pulse 5a requirements for 12 V vehicle battery line protection |
| AEC-Q101 qualification | Validated for automotive use including temperature cycling, humidity bias, and mechanical shock per JESD47 |
| Low leakage IR ≤ 50 μA @ VR = 3.12 V | Minimizes standby power loss in always-on vehicle networks such as CAN/LIN wake-up circuits |
| DO-219AB package with MSL level 1 | Eliminates bake requirements prior to reflow, reducing manufacturing cycle time and moisture-related defects |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Protecting 3.3 V microcontroller supply lines against load dump and alternator transients in engine control units. IC Role / Device Role / Timing Role: Zener clamping element placed between VCC and GND to clamp surges above 11.8 V while maintaining 3.9 V regulation under steady state. Use Value: Prevents MCU brownout or latch-up during ISO 7637-2 Pulse 5a events without requiring active supervision circuitry. |
Use Scenario: Stabilizing reference voltage for 12-bit ADC inputs in industrial temperature transmitters operating from 24 V loop supplies. IC Role / Device Role / Timing Role: Precision shunt regulator providing low-drift 3.9 V reference for op-amp biasing and sensor excitation. Use Value: Achieves <±0.5 % total error across −40 to +125 °C due to matched tempco and low ZZ. |
| Automotive Body Control Module (BCM) | Consumer Power Adapter Feedback |
Use Scenario: Overvoltage suppression on LIN bus transceiver VDD pins exposed to battery voltage spikes during ignition. IC Role / Device Role / Timing Role: Fast-response transient voltage suppressor absorbing 150 W surges within 1000 μs while limiting node voltage to 11.8 V. Use Value: Extends transceiver lifetime by preventing gate oxide damage during repeated cold-crank events. |
Use Scenario: Secondary-side voltage sensing in isolated flyback adapters where feedback accuracy impacts output regulation. IC Role / Device Role / Timing Role: Shunt reference diode in TL431-like optocoupler feedback network, setting 3.9 V threshold for error amplifier. Use Value: Enables ±1 % output voltage tolerance over line/load/temperature without trimming resistors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C3V9 | ±5 % VZ tolerance, SOT-23 package, 300 mW Ptot, no AEC-Q101 qualification | Limited to commercial-grade consumer power supplies; insufficient surge rating for automotive use | Select only for cost-driven non-automotive designs where ±5 % regulation and 300 mW dissipation suffice |
| SMBJ3V3A | 3.3 V standoff, 600 W PPPPM, bidirectional TVS, DO-214AA package | Designed for fast transient suppression rather than precision regulation; higher clamping voltage (7.1 V) | Prefer when primary need is ESD/EMI pulse absorption, not DC voltage reference stability |
Compared with BZD27B3V9P-HM3_A08, BZX84-C3V9 trades regulation precision and surge robustness for lower cost and smaller footprint, while SMBJ3V3A offers superior transient handling but lacks tight Zener tolerance and temperature stability required for reference applications.
Availability
BZD27B3V9P-HM3_A08 is available at Aetrix Electronics and suitable for automotive power management, industrial sensor interfaces, and consumer adapter feedback circuits requiring stable component supply with AEC-Q101 compliance and long-term lifecycle support.
Supply support for BZD27B3V9P-HM3_A08 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 leader in discrete semiconductors, specializing in high-reliability diodes, MOSFETs, and optoelectronics for automotive, industrial, and computing markets.
The BZD27B-M Series targets automotive-grade Zener regulation and transient protection, designed to meet stringent AEC-Q101 requirements while delivering tight voltage tolerance and high surge resilience in compact DO-219AB packages.
FAQ
What is the Zener voltage tolerance of BZD27B3V9P-HM3_A08?
The BZD27B3V9P-HM3_A08 has a Zener voltage range of 3.82 V to 3.98 V at IZT = 100 mA, corresponding to ±2 % tolerance around the nominal 3.9 V rating. This tight tolerance is confirmed in the Vishay BZD27B-M Series datasheet (Rev. 1.6, Table on page 2) and supports precision regulation in automotive and industrial applications where stable reference voltage is critical. The BZD27B3V9P-HM3_A08 achieves this via silicon planar process control and post-trim screening.
Is BZD27B3V9P-HM3_A08 qualified for automotive applications?
Yes, BZD27B3V9P-HM3_A08 is AEC-Q101 qualified, as indicated by the "-HM3" suffix per Vishay's ordering nomenclature. It meets JESD201 Class 2 whisker testing, MSL level 1 per J-STD-020, and 260 °C peak reflow compatibility - all verified in the official datasheet (Rev. 1.6, page 1). The BZD27B3V9P-HM3_A08 is intended for under-hood and body electronics where reliability across −65 °C to +175 °C is mandatory.
What is the maximum clamping voltage of BZD27B3V9P-HM3_A08 during surge events?
The BZD27B3V9P-HM3_A08 exhibits a maximum clamping voltage VC of 11.8 V at IRSM = 1200 A under 10/1000 μs waveform conditions, per the datasheet's protection-mode electrical characteristics table (page 3). This value defines the upper voltage limit imposed on protected nodes during transients and is critical for ensuring downstream ICs remain within absolute maximum ratings. The BZD27B3V9P-HM3_A08 achieves this with low dynamic impedance and optimized junction design.
What package type does BZD27B3V9P-HM3_A08 use?
BZD27B3V9P-HM3_A08 uses the DO-219AB (SMF) surface-mount package, measuring 2.7 mm × 3.5 mm × 0.85 mm with cathode marking and 2-terminal unidirectional polarity. Package dimensions and footprint recommendations are detailed in the datasheet (Rev. 1.6, page 5), confirming compatibility with standard SMD assembly processes and high-density PCB layouts. The BZD27B3V9P-HM3_A08's SMF package supports MSL level 1 handling and 260 °C reflow without preconditioning.
How does the temperature coefficient affect BZD27B3V9P-HM3_A08 performance?
The BZD27B3V9P-HM3_A08 has a temperature coefficient αVZ ranging from −0.14 %/°C to −0.04 %/°C at IZT = 100 mA, indicating a negative drift in Zener voltage with rising temperature. This behavior is inherent to low-voltage Zener mechanisms and is documented in the datasheet (page 2). For BZD27B3V9P-HM3_A08, it enables predictable compensation in circuits where ambient temperature varies widely, such as under-hood automotive modules - ensuring regulation remains within specification across −65 °C to +175 °C.
BZD27B3V9P-HM3_A08 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay
- Package/Case:
- DO-219AB
- Series:
- BZD27B-M
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 1V (Max)
- Voltage - Breakdown (Min):
- 3.82V
- Voltage - Clamping (Max) @ Ipp:
- -
- Current - Peak Pulse (10/1000µs):
- -
- Power - Peak Pulse:
- 150W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 175°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AB (SMF)
BZD27B3V9P-HM3_A08 FAQ
1.How can I place an order for BZD27B3V9P-HM3_A08 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZD27B3V9P-HM3_A08 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 BZD27B3V9P-HM3_A08 reliable?
The price and inventory of BZD27B3V9P-HM3_A08 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZD27B3V9P-HM3_A08 is usually 5 days.
3.What payment methods are accepted for BZD27B3V9P-HM3_A08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZD27B3V9P-HM3_A08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZD27B3V9P-HM3_A08?
BZD27B3V9P-HM3_A08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZD27B3V9P-HM3_A08 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 BZD27B3V9P-HM3_A08?
For technical support, including BZD27B3V9P-HM3_A08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZD27B3V9P-HM3_A08 requirements.
6.How does Aetrix verify that BZD27B3V9P-HM3_A08 is sourced from the original manufacturer or authorized distributors?
All BZD27B3V9P-HM3_A08 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 BZD27B3V9P-HM3_A08 meets industry standards.
7.What is the process for return or replacement of BZD27B3V9P-HM3_A08?
All BZD27B3V9P-HM3_A08 units undergo pre-shipment inspection (PSI). If there is an issue with BZD27B3V9P-HM3_A08, 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 BZD27B3V9P-HM3_A08 part is unused and in its original packaging.
Return procedure for BZD27B3V9P-HM3_A08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZD27B3V9P-HM3_A08 Tags
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