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Vishay BZD27B4V3P-HE3_A08
- Part No.:
- BZD27B4V3P-HE3_A08
- Manufacturer:
- Vishay
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
BZD27B4V3P-HE3_A08.pdf
- Description:
- ZENER DIODE SMF DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,563
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Product details
Overview
BZD27B4V3P-HE3_A08 from Vishay Semiconductors is a surface-mount, AEC-Q101 qualified Zener diode with nominal breakdown voltage 4.3 V, ±2 % tolerance, 100 mA test current, and 150 W peak surge power rating. It operates as a precision voltage reference and overvoltage clamp in automotive power rail protection circuits.
For engineers reviewing the BZD27B4V3P-HE3_A08 datasheet, BZD27B4V3P-HE3_A08 pinout, BZD27B4V3P-HE3_A08 application, or BZD27B4V3P-HE3_A08 equivalent, key selection criteria include its 4.3 V Zener voltage, 7 Ω dynamic resistance at 100 mA, -0.12 to -0.02 %/°C temperature coefficient, SOD-123W-compatible SMF (DO-219AB) package, and AEC-Q101 qualification for automotive use.
Technical Context
This unidirectional Zener diode functions in reverse-bias regulation mode with a specified Zener voltage of 4.21–4.39 V at 100 mA test current. Its low dynamic resistance (7 Ω typ.) ensures stable clamping under transient conditions, and its negative temperature coefficient (-0.12 to -0.02 %/°C) supports predictable thermal drift in automotive ambient ranges.
The device meets MSL level 1 per J-STD-020 (peak reflow ≤260 °C), passes JESD 201 Class 2 whisker testing, and delivers 150 W non-repetitive peak surge power (10/1000 μs waveform) - critical for ISO 7637-2 pulse suppression in 12 V vehicle systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 4.21–4.39 V at IZT = 100 mA - defines precise clamping threshold for 5 V rail stabilization |
| Tolerance | ±2 % - enables tight voltage margin control in safety-critical automotive sensing nodes |
| Dynamic Resistance | 7 Ω typical at 100 mA - minimizes output voltage deviation during load transients |
| Temperature Coefficient | -0.12 to -0.02 %/°C - ensures predictable, bounded drift across -65 to +175 °C operating range |
| Peak Surge Power | 150 W (10/1000 μs) - sustains ISO 7637-2 Pulse 1 & 2a surges without failure |
| Package | SMF (DO-219AB) - 2.7 × 3.5 mm footprint compatible with SOD-123W layout, MSL Level 1 |
| AEC-Q101 Qualified | Yes - validated for automotive electronics per stress test requirements including HBM ESD >8 kV |
Pinout & Package
SMF (DO-219AB) package: low-profile surface-mount case with cathode marking, 2.7 mm × 3.5 mm body, 0.85 mm height, and 1.2 mm lead width. Compatible with standard SOD-123W PCB footprints and reflow soldering profiles (peak 260 °C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / surge return path | Connected to ground or low-impedance return in clamp configuration; handles full surge current |
| Cathode | Zener breakdown terminal / regulated output node | Connected to protected rail; maintains 4.3 V reference during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive under-hood and powertrain applications with extended temperature and reliability testing |
| 150 W peak surge rating | Withstands 10/1000 μs transients per ISO 7637-2 without degradation - eliminates need for external TVS staging |
| ±2 % VZ tolerance | Reduces binning requirements and simplifies system-level calibration for 5 V supply monitoring |
| MSL Level 1 rating | Enables direct placement into high-volume SMT lines without dry-pack or baking preconditioning |
| Low leakage (≤1 μA at VR) | Minimizes standby power loss in always-on automotive modules such as CAN transceivers and watchdog circuits |
Applications
| Automotive Power Rail Protection | Engine Control Unit (ECU) Voltage Reference |
|---|---|
Use Scenario: Clamping 12 V battery line against load dump and alternator spikes in passenger vehicle infotainment head units. IC Role / Device Role / Timing Role: Primary overvoltage clamp protecting downstream DC-DC converters and microcontrollers. Use Value: 150 W surge rating absorbs ISO 7637-2 Pulse 5a energy without derating, enabling single-device protection architecture. | Use Scenario: Providing stable 4.3 V reference for analog sensor signal conditioning in diesel ECU crankshaft position circuitry. IC Role / Device Role / Timing Role: Precision Zener reference source for ADC biasing and comparator thresholds. Use Value: ±2 % tolerance and -0.12 to -0.02 %/°C TC ensure <±15 mV drift over -40 to +125 °C engine bay operation. |
| Body Control Module (BCM) Input Protection | ADAS Camera Power Sequencing |
Use Scenario: Protecting LIN bus transceiver inputs from ESD and cable discharge events in door module switches. IC Role / Device Role / Timing Role: Bidirectional ESD clamp (with series resistor) on 12 V switched inputs. Use Value: >8 kV HBM ESD rating and 1.2 V forward voltage at 0.2 A enable robust interface protection without signal distortion. | Use Scenario: Regulating auxiliary 5 V rail for image sensor startup sequencing in rear-view camera modules. IC Role / Device Role / Timing Role: Low-drift shunt regulator stabilizing bias for CIS timing generators. Use Value: 7 Ω dynamic resistance maintains <50 mV ripple under 100 mA step load, ensuring clean clock domain power. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C4V3-HE3-08 | Same 4.3 V nominal Zener, but SOT-23 package (higher RthJA = 300 K/W), lower PRSM = 40 W | Limited to low-energy transients; unsuitable for ISO 7637-2 Pulse 5a | Select only for space-constrained consumer PCBs where surge immunity is secondary |
| SMBJ4.3A | TVS diode, 4.3 V standoff, 600 W peak power, bidirectional capability | Designed for fast transient suppression (tR <1 ps), not precision regulation | Choose when clamping speed <1 ns is required, but accept higher leakage and no voltage reference stability |
Compared with BZD27B4V3P-HE3_A08, BZX84-C4V3-HE3-08 offers smaller footprint but lacks automotive surge robustness, while SMBJ4.3A provides superior transient response at the cost of regulation accuracy and temperature stability - making BZD27B4V3P-HE3_A08 optimal for combined reference + protection roles in AEC-Q101 systems.
Availability
BZD27B4V3P-HE3_A08 is available at Aetrix Electronics and suitable for automotive power management, engine control unit (ECU) voltage reference, and body control module (BCM) input protection requiring stable component supply and AEC-Q101 compliance.
Supply support for BZD27B4V3P-HE3_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 designs and manufactures discrete semiconductors including diodes, MOSFETs, and optoelectronics for automotive, industrial, and computing markets.
The BZD27B Series targets high-reliability automotive voltage regulation and transient protection, emphasizing AEC-Q101 qualification, surge robustness, and tight parametric control across extreme temperature ranges.
FAQ
What is the Zener voltage tolerance of BZD27B4V3P-HE3_A08?
The BZD27B4V3P-HE3_A08 has a Zener voltage tolerance of ±2 %, specified as 4.21 V minimum to 4.39 V maximum at 100 mA test current. This tight tolerance enables accurate voltage referencing in automotive sensor interfaces and power supply monitoring circuits where regulation precision directly impacts system calibration integrity.
Is BZD27B4V3P-HE3_A08 qualified for automotive applications?
Yes, BZD27B4V3P-HE3_A08 is AEC-Q101 qualified, with validation including HBM ESD >8 kV, machine model ESD >800 V, JESD 201 Class 2 whisker testing, and MSL Level 1 moisture sensitivity. These qualifications confirm its suitability for under-hood and powertrain applications in passenger and commercial vehicles.
What package type does BZD27B4V3P-HE3_A08 use?
BZD27B4V3P-HE3_A08 uses the SMF (DO-219AB) package - a low-profile surface-mount case measuring 2.7 mm × 3.5 mm with 0.85 mm height. It is mechanically and layout-compatible with SOD-123W footprints and rated for peak reflow temperatures up to 260 °C per J-STD-020.
What is the peak surge power rating of BZD27B4V3P-HE3_A08?
The BZD27B4V3P-HE3_A08 delivers 150 W peak surge power for 10/1000 μs waveform transients, and 300 W for 100 μs square pulses. This rating allows it to absorb ISO 7637-2 Pulse 1, 2a, and 5a energy without failure, supporting single-device protection architectures in 12 V automotive systems.
Does BZD27B4V3P-HE3_A08 have a specified temperature coefficient?
Yes, BZD27B4V3P-HE3_A08 has a temperature coefficient (αVZ) ranging from -0.12 %/°C minimum to -0.02 %/°C maximum at 100 mA test current. This negative coefficient ensures predictable, bounded voltage drift over the full -65 °C to +175 °C operating range, critical for engine bay and transmission control applications.
BZD27B4V3P-HE3_A08 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay
- Package/Case:
- DO-219AB
- Series:
- BZD27B, eSMP®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 1V (Max)
- Voltage - Breakdown (Min):
- 4.21V
- 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)
BZD27B4V3P-HE3_A08 FAQ
1.How can I place an order for BZD27B4V3P-HE3_A08 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZD27B4V3P-HE3_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 BZD27B4V3P-HE3_A08 reliable?
The price and inventory of BZD27B4V3P-HE3_A08 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZD27B4V3P-HE3_A08 is usually 5 days.
3.What payment methods are accepted for BZD27B4V3P-HE3_A08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZD27B4V3P-HE3_A08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZD27B4V3P-HE3_A08?
BZD27B4V3P-HE3_A08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZD27B4V3P-HE3_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 BZD27B4V3P-HE3_A08?
For technical support, including BZD27B4V3P-HE3_A08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZD27B4V3P-HE3_A08 requirements.
6.How does Aetrix verify that BZD27B4V3P-HE3_A08 is sourced from the original manufacturer or authorized distributors?
All BZD27B4V3P-HE3_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 BZD27B4V3P-HE3_A08 meets industry standards.
7.What is the process for return or replacement of BZD27B4V3P-HE3_A08?
All BZD27B4V3P-HE3_A08 units undergo pre-shipment inspection (PSI). If there is an issue with BZD27B4V3P-HE3_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 BZD27B4V3P-HE3_A08 part is unused and in its original packaging.
Return procedure for BZD27B4V3P-HE3_A08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZD27B4V3P-HE3_A08 Tags
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