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Vishay BZD27B3V9P-HM3_A18
- Part No.:
- BZD27B3V9P-HM3_A18
- Manufacturer:
- Vishay
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
BZD27B3V9P-HM3_A18.pdf
- Description:
- ZENER DIODE SMF DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,145
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Product details
Overview
BZD27B3V9P-HM3_A18 from Vishay Semiconductors is a surface-mount silicon planar Zener diode with nominal breakdown voltage of 3.9 V ±2 %, 100 mA test current, and 150 W peak surge power rating (10/1000 μs waveform). It operates across -65 °C to +175 °C and is AEC-Q101 qualified for automotive electronics protection circuits.
For engineers reviewing the BZD27B3V9P-HM3_A18 datasheet, BZD27B3V9P-HM3_A18 pinout, BZD27B3V9P-HM3_A18 application, or BZD27B3V9P-HM3_A18 equivalent, this page delivers verified electrical specs, thermal performance data, SOD-123W-compatible DO-219AB package details, and validated automotive-grade alternatives.
Technical Context
This unidirectional Zener diode functions as both a precision voltage reference and transient voltage suppressor. Its 3.9 V nominal Zener voltage is specified at 100 mA test current with dynamic resistance ≤4 Ω and temperature coefficient between -0.14 %/°C and -0.04 %/°C.
It delivers 150 W non-repetitive peak surge power under 10/1000 μs waveform, clamps at 11.8 V maximum at 12.2 A peak reverse current, and maintains low leakage (<50 μA at VR = 3.12 V) while meeting MSL level 1 per J-STD-020 and JESD 201 Class 2 whisker requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 3.82 V min. / 3.9 V nom. / 3.98 V max. at IZT = 100 mA - ensures stable regulation in low-voltage bias networks |
| Dynamic Resistance (ZZ) | ≤4 Ω typ. at IZT = 100 mA - minimizes output voltage variation under load changes |
| Clamping Voltage (VC) | ≤12.2 V at IRSM = 12.2 A (10/1000 μs) - limits transient overvoltage on protected 3.3 V logic rails |
| Peak Surge Power (PRSM) | 150 W (10/1000 μs) - sustains high-energy ESD and load-dump transients without failure |
| Junction Temperature (Tj) | 175 °C max. - enables operation in under-hood automotive environments and industrial power supplies |
| Leakage Current (IR) | ≤50 μA at VR = 3.12 V - preserves low-power standby performance in battery-backed systems |
| ESD Rating | >8 kV HBM / >800 V MM - exceeds IEC 61000-4-2 Level 4 for system-level robustness |
Pinout & Package
Package: DO-219AB (SMD, low-profile), identical footprint to SOD-123W - compatible with standard 0805 reflow land patterns and automated placement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction | Connected to lower-potential node in clamp configuration; ties to ground in shunt regulator topology |
| Cathode | Zener breakdown terminal | Connected to protected line or regulated node; polarity marking visible on top surface per orientation diagram |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control units and ADAS sensor interfaces |
| MSL Level 1 rating | Enables single-pass reflow without baking; peak solder temperature up to 260 °C supported |
| Low dynamic impedance | 4 Ω typical ensures tight voltage regulation under fast load transients in feedback loops |
| High surge capability | 150 W (10/1000 μs) handles ISO 7637-2 pulse 5a/b load dump events in 12 V systems |
| Halogen-free & RoHS-compliant | Meets automotive environmental compliance requirements for end-of-life recycling and emissions |
Applications
| Automotive Body Control Module | Industrial PLC Input Protection |
|---|---|
Use Scenario: Protecting microcontroller GPIO pins and CAN transceiver bias rails against load dump and jump-start surges in BCMs. IC Role / Device Role / Timing Role: Shunt clamping device placed directly across 3.3 V or 5 V supply rails upstream of LDOs. Use Value: Limits transient voltage to ≤12.2 V during 150 W surges, preventing latch-up or permanent damage to downstream logic. |
Use Scenario: Safeguarding 24 V digital input channels from field-wiring induced transients in factory automation controllers. IC Role / Device Role / Timing Role: Primary overvoltage clamp on optocoupler input side, operating in Zener breakdown mode. Use Value: Maintains <50 μA leakage at 19.2 V (80 % of 24 V rail), ensuring reliable signal detection while suppressing >1 kV spikes. |
| USB-C Power Delivery Interface | Medical Sensor Signal Conditioning |
Use Scenario: Regulating auxiliary 3.3 V bias for USB PD controller ICs and protecting CC line ESD events. IC Role / Device Role / Timing Role: Dual-function device: precision 3.9 V reference for ADC monitoring and 8 kV HBM ESD clamp on CC pin. Use Value: Achieves ±2 % voltage tolerance and -0.14 to -0.04 %/°C TC - enabling accurate VBUS fault detection across temperature. |
Use Scenario: Stabilizing excitation voltage for bridge-based pressure sensors in portable diagnostic equipment. IC Role / Device Role / Timing Role: Low-noise shunt reference providing 3.9 V bias to Wheatstone bridge, replacing higher-drift alternatives. Use Value: Delivers 4 Ω dynamic resistance and 175 °C max junction temperature - supporting sterilization cycles and extended battery life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode protection and regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZD27C3V9P-M3-08 | Commercial grade (non-AEC-Q101), same 3.9 V spec, identical DO-219AB package | Lacks automotive qualification; suitable for consumer or industrial non-automotive use | Select when AEC-Q101 is not required and cost sensitivity outweighs qualification needs |
| SMBJ3V3A | TVS diode with 3.3 V standoff, 100 W PPPM, higher clamping ratio (6.5 V @ 10 A) | Optimized for fast transient suppression rather than precision regulation | Choose for higher-speed ESD/EMI protection where regulation accuracy is secondary |
Compared with BZD27B3V9P-HM3_A18, BZD27C3V9P-M3-08 offers identical electrical performance without automotive qualification, while SMBJ3V3A trades tighter voltage tolerance for faster response and higher surge current handling - making it better suited for pure transient suppression over precision biasing.
Availability
BZD27B3V9P-HM3_A18 is available at Aetrix Electronics and suitable for automotive electronics, industrial PLC input stages, USB-C PD interface design, and medical sensor biasing requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for BZD27B3V9P-HM3_A18 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 high-surge, high-temperature applications demanding AEC-Q101 qualification and precise Zener regulation - especially in next-generation vehicle ECUs and ruggedized industrial controls.
FAQ
What is the Zener voltage tolerance for BZD27B3V9P-HM3_A18?
The BZD27B3V9P-HM3_A18 has a Zener voltage range of 3.82 V (min) to 3.98 V (max) at 100 mA test current, corresponding to ±2 % tolerance around the nominal 3.9 V rating. This tight tolerance is confirmed in the Electrical Characteristics table on page 2 of Vishay document 85922 and applies specifically to the BZD27B3V9P-HM3_A18 variant within the BZD27B-M Series.
Is BZD27B3V9P-HM3_A18 suitable for automotive applications?
Yes, BZD27B3V9P-HM3_A18 is AEC-Q101 qualified, as explicitly stated in the "Ordering Information" section and footnote for the "-HM3" suffix. It meets JESD 201 Class 2 whisker testing, MSL Level 1, and supports junction temperatures up to 175 °C - making it appropriate for under-hood and body-control module deployments.
What package does BZD27B3V9P-HM3_A18 use, and is it compatible with standard SMT processes?
BZD27B3V9P-HM3_A18 uses the DO-219AB (SMF) package, which is footprint-compatible with SOD-123W and supports wave and reflow soldering. Its MSL Level 1 rating permits peak reflow temperatures up to 260 °C without preconditioning, and the cathode marking aligns with standard orientation diagrams in Vishay's package drawing S8-V-3915.01-001.
How does the surge capability of BZD27B3V9P-HM3_A18 compare to standard Zener diodes?
BZD27B3V9P-HM3_A18 delivers 150 W peak surge power under 10/1000 μs waveform - significantly higher than legacy SOD-123 Zeners (typically ≤60 W). This is enabled by its optimized die construction and low RthJL of 30 K/W, allowing it to absorb ISO 7637-2 load dump energy without degradation, as verified in Vishay's Typical Repetitive Peak Surge Power chart (Fig. 5).
What is the maximum reverse leakage current for BZD27B3V9P-HM3_A18 at rated voltage?
At VR = 3.12 V (80 % of nominal 3.9 V), the BZD27B3V9P-HM3_A18 exhibits a maximum reverse leakage current of 50 μA, per the "Electrical Characteristics" table on page 2 of document 85922. This low leakage supports energy-efficient designs in battery-powered and always-on sensor nodes.
BZD27B3V9P-HM3_A18 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_A18 FAQ
1.How can I place an order for BZD27B3V9P-HM3_A18 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZD27B3V9P-HM3_A18 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_A18 reliable?
The price and inventory of BZD27B3V9P-HM3_A18 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_A18 is usually 5 days.
3.What payment methods are accepted for BZD27B3V9P-HM3_A18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZD27B3V9P-HM3_A18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZD27B3V9P-HM3_A18?
BZD27B3V9P-HM3_A18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZD27B3V9P-HM3_A18 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_A18?
For technical support, including BZD27B3V9P-HM3_A18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZD27B3V9P-HM3_A18 requirements.
6.How does Aetrix verify that BZD27B3V9P-HM3_A18 is sourced from the original manufacturer or authorized distributors?
All BZD27B3V9P-HM3_A18 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_A18 meets industry standards.
7.What is the process for return or replacement of BZD27B3V9P-HM3_A18?
All BZD27B3V9P-HM3_A18 units undergo pre-shipment inspection (PSI). If there is an issue with BZD27B3V9P-HM3_A18, 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_A18 part is unused and in its original packaging.
Return procedure for BZD27B3V9P-HM3_A18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZD27B3V9P-HM3_A18 Tags
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