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Vishay BZD27B9V1P-HE3_A08
- Part No.:
- BZD27B9V1P-HE3_A08
- Manufacturer:
- Vishay
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
BZD27B9V1P-HE3_A08.pdf
- Description:
- ZENER DIODE SMF DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,560
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Product details
Overview
BZD27B9V1P-HE3_A08 from Vishay Semiconductors is an AEC-Q101 qualified, unidirectional silicon planar Zener diode in SOD-123W-compatible SMF (DO-219AB) package, with nominal Zener voltage 9.1 V ±2 % at 50 mA test current, 150 W peak surge power rating (10/1000 μs), and 175 °C maximum junction temperature - used for overvoltage protection in automotive power rails and industrial DC supplies.
For engineers reviewing the BZD27B9V1P-HE3_A08 datasheet, BZD27B9V1P-HE3_A08 pinout, BZD27B9V1P-HE3_A08 application, or BZD27B9V1P-HE3_A08 equivalent, key selection criteria include its ±2 % VZ tolerance, 12.9 V clamping voltage at 11.3 A surge current, low dynamic resistance (4 Ω typ.), AEC-Q101 qualification, and MSL level 1 reflow compatibility.
Technical Context
This device operates as a precision voltage reference and transient voltage suppressor in unidirectional configuration. It delivers stable regulation under DC bias and robust clamping during fast transients, with temperature coefficient of +0.03 to +0.08 %/°C and leakage current ≤10 μA at 7.5 V reverse voltage.
The BZD27B9V1P-HE3_A08 uses a planar silicon junction optimized for low capacitance (<2.5 pF at 0 V), high surge current handling (11.3 A peak), and long-term stability per JESD201 Class 2 whisker testing - enabling reliable operation in harsh automotive environments where thermal cycling and vibration are present.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 8.92–9.28 V at 50 mA - ensures tight regulation within ±2 % for stable reference or clamp threshold |
| Clamping Voltage (VC) | 12.9 V at 11.3 A (10/1000 μs) - defines maximum voltage seen by protected circuit during surge |
| Peak Surge Power (PRSM) | 150 W - supports IEC 61000-4-5 level 4 surge immunity in automotive ECUs and power modules |
| Dynamic Resistance (ZZ) | 2–4 Ω - minimizes voltage deviation under varying load current, critical for precision regulation |
| Temperature Coefficient (αVZ) | +0.03 to +0.08 %/°C - enables predictable VZ drift across -65 to +175 °C operating range |
| Junction-to-Ambient RthJA | 180 K/W on 3 mm × 3 mm Cu pad - determines thermal derating in compact PCB layouts |
| ESD Rating (HBM) | >8 kV - meets AEC-Q101 requirements for robustness against handling and system-level ESD events |
Pinout & Package
Package: SMF (DO-219AB), low-profile surface-mount case compatible with SOD-123W footprint; dimensions 2.9 × 1.4 × 1.08 mm; cathode marked by band on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction | Connected to lower-potential node in protection circuits; must be routed with adequate copper for 0.2 A continuous current |
| Cathode | Zener breakdown terminal; voltage reference node | Marked side of package; connects to protected rail or reference point; carries full surge current during clamping |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive underhood applications including engine control, ADAS power domains, and body electronics |
| MSL Level 1 moisture sensitivity | Enables standard reflow without baking; peak solder temperature up to 260 °C supported |
| JESD201 Class 2 whisker resistance | Prevents tin whisker growth in high-reliability systems requiring >15-year field life |
| Low leakage current | ≤10 μA at 7.5 V reverse voltage - reduces standby power loss in always-on vehicle subsystems |
| 175 °C max junction temperature | Supports operation in high-temperature zones such as near power converters or motor drivers |
Applications
| Automotive Power Rail Protection | Industrial DC Power Monitoring |
|---|---|
Use Scenario: Protecting 12 V battery-supplied microcontrollers and sensors from load dump transients up to 35 V. IC Role / Device Role / Timing Role: Unidirectional shunt clamping device placed between rail and ground, conducting only during overvoltage events. Use Value: Limits voltage to ≤12.9 V during 11.3 A surges, preventing latch-up or damage to downstream 12 V logic ICs. |
Use Scenario: Stabilizing reference voltage for analog-to-digital conversion in programmable logic controllers (PLCs). IC Role / Device Role / Timing Role: Precision Zener voltage reference providing 9.1 V ±2 % for ADC bias and calibration circuits. Use Value: Delivers <4 Ω dynamic resistance and +0.03 %/°C TC, ensuring <0.1 % full-scale error over industrial temperature range. |
| Automotive Lighting Driver Protection | Telecom DC-DC Converter Feedback |
Use Scenario: Safeguarding LED driver ICs in headlamp modules against ISO 7637-2 pulse 5a/b transients. IC Role / Device Role / Timing Role: Fast-response transient voltage suppressor placed across input capacitor of buck controller. Use Value: Clamps 10/1000 μs surges to 12.9 V within nanoseconds, preserving driver IC integrity without crowbar action. |
Use Scenario: Providing accurate feedback reference for isolated flyback converters in base station power supplies. IC Role / Device Role / Timing Role: Secondary-side Zener reference stabilizing optocoupler bias in voltage feedback loop. Use Value: Maintains ±2 % VZ tolerance and low TC to ensure <±1 % output regulation accuracy across -40 to +85 °C ambient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ9.0A | TVS diode with 9.0 V standoff, 14.4 V clamping at 10.4 A; higher capacitance (~100 pF); not Zener-regulated | Designed for faster transient suppression (sub-nanosecond response), but lacks precision DC regulation capability | Select when surge speed dominates over DC reference accuracy; avoid where stable 9.1 V bias is required |
| BZX84-C9V1 | SOT-23 Zener; 9.1 V ±5 % tolerance; 300 mW power rating; no AEC-Q101 or surge rating | Intended for low-power signal-level regulation, not automotive-grade surge protection | Use only in non-automotive, low-energy circuits; insufficient for 150 W surge or 175 °C operation |
Compared with SMBJ9.0A and BZX84-C9V1, the BZD27B9V1P-HE3_A08 uniquely combines AEC-Q101 qualification, ±2 % VZ tolerance, 150 W surge capability, and 175 °C operation - making it the sole choice for high-reliability automotive power rail clamping where both precision and ruggedness are mandatory.
Availability
BZD27B9V1P-HE3_A08 is available at Aetrix Electronics and suitable for automotive power management, industrial PLCs, and telecom DC-DC converter designs requiring stable component supply, AEC-Q101 compliance, and high-surge resilience.
Supply support for BZD27B9V1P-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 is a global leader in discrete semiconductors, specializing in high-reliability diodes, MOSFETs, and optoelectronics for automotive, industrial, and computing markets.
The BZD27B Series targets automotive-grade voltage regulation and transient protection, engineered to meet AEC-Q101, JESD201, and IEC 61000-4-5 requirements for under-hood and powertrain applications.
FAQ
What is the Zener voltage tolerance of BZD27B9V1P-HE3_A08?
The BZD27B9V1P-HE3_A08 has a Zener voltage tolerance of ±2 %, specified as 8.92 V (min) to 9.28 V (max) at 50 mA test current. This tight tolerance enables precise voltage clamping and reference generation in automotive and industrial systems where regulation accuracy is critical. The BZD27B9V1P-HE3_A08 achieves this via planar silicon process control and 100 % parametric screening per Vishay's AEC-Q101 flow.
Is BZD27B9V1P-HE3_A08 suitable for automotive applications?
Yes, BZD27B9V1P-HE3_A08 is AEC-Q101 qualified and explicitly designed for automotive use, including engine control units, body electronics, and lighting systems. It meets JESD201 Class 2 whisker testing, MSL Level 1 reflow, and operates from -65 to +175 °C. The BZD27B9V1P-HE3_A08 also complies with ISO 7637-2 pulse 5a/b surge immunity when applied per recommended layout guidelines.
What is the maximum clamping voltage of BZD27B9V1P-HE3_A08 during surge events?
The BZD27B9V1P-HE3_A08 clamps to 12.9 V at 11.3 A peak current under 10/1000 μs waveform conditions. This value is measured per IEC 61000-4-5 and defines the upper voltage limit imposed on protected circuits during standardized surge tests. The BZD27B9V1P-HE3_A08 maintains this clamping performance across its full operating temperature range due to its positive temperature coefficient design.
Can BZD27B9V1P-HE3_A08 be used in place of a standard 9.1 V Zener diode like BZX84-C9V1?
No - while both regulate near 9.1 V, the BZD27B9V1P-HE3_A08 differs fundamentally: it offers ±2 % tolerance (vs. ±5 %), 150 W surge rating (vs. 300 mW), AEC-Q101 qualification, and 175 °C junction rating (vs. 150 °C). Substituting BZD27B9V1P-HE3_A08 for BZX84-C9V1 requires verifying PCB thermal relief, surge path routing, and qualification alignment - the BZD27B9V1P-HE3_A08 is not a drop-in replacement.
What package does BZD27B9V1P-HE3_A08 use, and is it RoHS-compliant?
BZD27B9V1P-HE3_A08 uses the SMF (DO-219AB) package - a low-profile, surface-mount case compatible with SOD-123W footprints and rated for 260 °C reflow. It is RoHS-compliant per EU Directive 2011/65/EU and Vishay's material declaration Doc. #99912. The BZD27B9V1P-HE3_A08 marking "HE3" confirms RoHS compliance and AEC-Q101 qualification, distinguishing it from commercial-grade "E3" variants.
BZD27B9V1P-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):
- 7.5V (Max)
- Voltage - Breakdown (Min):
- 8.92V
- Voltage - Clamping (Max) @ Ipp:
- 12.9V
- Current - Peak Pulse (10/1000µs):
- 11.3A
- 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)
BZD27B9V1P-HE3_A08 FAQ
1.How can I place an order for BZD27B9V1P-HE3_A08 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZD27B9V1P-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 BZD27B9V1P-HE3_A08 reliable?
The price and inventory of BZD27B9V1P-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 BZD27B9V1P-HE3_A08 is usually 5 days.
3.What payment methods are accepted for BZD27B9V1P-HE3_A08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZD27B9V1P-HE3_A08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZD27B9V1P-HE3_A08?
BZD27B9V1P-HE3_A08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZD27B9V1P-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 BZD27B9V1P-HE3_A08?
For technical support, including BZD27B9V1P-HE3_A08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZD27B9V1P-HE3_A08 requirements.
6.How does Aetrix verify that BZD27B9V1P-HE3_A08 is sourced from the original manufacturer or authorized distributors?
All BZD27B9V1P-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 BZD27B9V1P-HE3_A08 meets industry standards.
7.What is the process for return or replacement of BZD27B9V1P-HE3_A08?
All BZD27B9V1P-HE3_A08 units undergo pre-shipment inspection (PSI). If there is an issue with BZD27B9V1P-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 BZD27B9V1P-HE3_A08 part is unused and in its original packaging.
Return procedure for BZD27B9V1P-HE3_A08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZD27B9V1P-HE3_A08 Tags
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