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Vishay BZD27B15P-HE3_A18
- Part No.:
- BZD27B15P-HE3_A18
- Manufacturer:
- Vishay
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
BZD27B15P-HE3_A18.pdf
- Description:
- ZENER DIODE SMF DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,107
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Product details
Overview
BZD27B15P-HE3_A18 from Vishay Semiconductors is a surface-mount, AEC-Q101 qualified Zener diode with nominal breakdown voltage of 15 V (±2 %), 50 mA test current, 20.5 V clamping voltage at 7.2 A surge current, and 150 W peak pulse power rating. It serves as a precision voltage reference and transient overvoltage protector in automotive power rails and industrial sensor interfaces.
For engineers reviewing the BZD27B15P-HE3_A18 datasheet, BZD27B15P-HE3_A18 pinout, BZD27B15P-HE3_A18 application, or BZD27B15P-HE3_A18 equivalent, key selection criteria include its ±2 % VZ tolerance, -65 °C to +175 °C operating range, MSL level 1 moisture sensitivity, and DO-219AB (SMF) package compatibility with reflow soldering.
Technical Context
This unidirectional Zener diode operates in reverse-bias breakdown mode for voltage regulation and transient suppression. Its 15 V nominal Zener voltage is specified at 50 mA test current, with dynamic resistance of 11 Ω and temperature coefficient of +0.05 to +0.1 %/°C - enabling stable reference performance across wide thermal ranges.
The device delivers 150 W non-repetitive peak surge power under 10/1000 μs waveform conditions and features low leakage current (≤5 μA at 12 V), 1.2 V forward voltage at 0.2 A, and compliance with AEC-Q101 for automotive reliability including >8 kV HBM ESD rating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 14.7 V to 15.3 V at 50 mA - tight ±2 % tolerance ensures accurate voltage reference in feedback loops |
| Clamping Voltage (VC) | 20.5 V at 7.2 A - defines maximum voltage seen by protected circuit during 10/1000 μs transients |
| Peak Pulse Power (PRSM) | 150 W - supports robust protection against IEC 61000-4-5 level 4 surges |
| Operating Temperature | -65 °C to +175 °C - enables deployment in under-hood automotive and industrial environments |
| Package | DO-219AB (SMF) - low-profile 2.7 mm × 1.9 mm surface-mount outline with MSL level 1 handling |
| ESD Rating | >8 kV HBM - meets automotive system-level ESD immunity requirements without external shielding |
| Surge Current (IRSM) | 7.2 A - sustains high-energy transients while maintaining clamping integrity |
Pinout & Package
DO-219AB (SMF) package: 2.7 mm × 1.9 mm × 1.08 mm body, cathode-marked top-side, compatible with standard SMD reflow profiles (peak 260 °C). Moisture sensitivity level 1 per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Surge current return path | Connected to ground or low-impedance return in clamp configuration; carries full surge current during transient events |
| Cathode | Zener breakdown terminal / Voltage reference node | Connected to protected line; establishes regulated 15 V reference or clamps overvoltage to ≤20.5 V |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control units and ADAS power domains |
| ±2 % Zener voltage tolerance | Enables precise voltage regulation without post-production trimming in critical feedback paths |
| 150 W peak pulse power rating | Provides single-device protection against severe lightning-induced surges per IEC 61000-4-5 |
| MSL level 1 packaging | Eliminates bake-out requirement prior to assembly, reducing manufacturing cost and cycle time |
| Low dynamic impedance (11 Ω) | Minimizes voltage deviation under varying load currents, improving regulation stability |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Protecting 12 V battery-supplied ECUs from load-dump transients up to 35 V. IC Role / Device Role / Timing Role: Unidirectional Zener clamp absorbing energy during ISO 7637-2 pulse 5a events. Use Value: Limits rail voltage to ≤20.5 V during 7.2 A surges, preventing damage to downstream LDOs and microcontrollers. | Use Scenario: Stabilizing reference voltage for 4–20 mA transmitter circuits in process automation. IC Role / Device Role / Timing Role: Precision 15 V shunt reference establishing excitation voltage for current-loop drivers. Use Value: ±2 % VZ tolerance and +0.05/+0.1 %/°C TC ensure <0.5 % total error over -40 °C to +125 °C ambient. |
| DC-DC Converter Feedback Divider | RS-485 Transceiver Bus Protection |
Use Scenario: Providing stable voltage reference for optocoupler-based isolated feedback in 48 V telecom DC-DC converters. IC Role / Device Role / Timing Role: Shunt regulator setting upper threshold of error amplifier input network. Use Value: Low 11 Ω dynamic resistance maintains regulation accuracy despite ripple-induced current variation. | Use Scenario: Guarding RS-485 transceiver I/O pins against ESD and cable discharge events in factory networks. IC Role / Device Role / Timing Role: Fast-response transient voltage suppressor placed between bus lines and ground. Use Value: 20.5 V clamping voltage protects transceivers rated for ±15 V common-mode range without sacrificing signal integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15A | Higher 1500 W peak power but looser 10 % VBR tolerance; larger SMB package (4.5 mm × 3.2 mm) | Preferred for higher-energy surge environments where footprint is not constrained | Select when surge energy exceeds 150 W but ±2 % regulation is not required |
| BZX84-C15 | Same 15 V nominal voltage but only ±5 % tolerance; SOT-23 package; 300 mW PD; no AEC-Q101 qualification | Suitable for non-automotive consumer electronics with lower reliability demands | Choose for cost-sensitive, non-automotive designs where MSL level 1 and 175 °C operation are unnecessary |
Compared with SMBJ15A and BZX84-C15, the BZD27B15P-HE3_A18 uniquely combines automotive-grade reliability (AEC-Q101), tight ±2 % voltage tolerance, and compact DO-219AB packaging - making it optimal for space-constrained, high-stability automotive and industrial protection applications.
Availability
BZD27B15P-HE3_A18 is available at Aetrix Electronics and suitable for automotive power management, industrial sensor interfaces, DC-DC converter feedback networks, and RS-485 bus protection requiring stable component supply and long-term lifecycle continuity.
Supply support for BZD27B15P-HE3_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 Series belongs to Vishay's eSMP® Zener portfolio, engineered specifically for high-surge, high-temperature automotive and industrial applications demanding AEC-Q101 qualification and tight voltage tolerances.
FAQ
What is the Zener voltage tolerance of the BZD27B15P-HE3_A18?
The BZD27B15P-HE3_A18 has a nominal Zener voltage of 15 V with a guaranteed tolerance of ±2 %, specified at 50 mA test current. This tight tolerance is confirmed in the Vishay datasheet (Document Number: 85921, Rev. 2.1) and enables high-accuracy voltage regulation in feedback and reference circuits where drift must be minimized.
Is the BZD27B15P-HE3_A18 qualified for automotive use?
Yes, the BZD27B15P-HE3_A18 is AEC-Q101 qualified, as indicated by the "-HE3" suffix in its ordering code. It meets automotive reliability requirements including >8 kV HBM ESD, JESD201 Class 2 whisker testing, and operation from -65 °C to +175 °C - making it suitable for under-hood and powertrain applications.
What package does the BZD27B15P-HE3_A18 use, and is it RoHS-compliant?
The BZD27B15P-HE3_A18 uses the DO-219AB (SMF) surface-mount package - measuring 2.7 mm × 1.9 mm × 1.08 mm - and is RoHS-compliant per the "-HE3" designation. It meets MSL level 1 per J-STD-020 and is fully compatible with lead-free reflow soldering up to 260 °C peak temperature.
What is the clamping voltage of the BZD27B15P-HE3_A18 during surge events?
The BZD27B15P-HE3_A18 has a clamping voltage (VC) of 20.5 V at 7.2 A, measured under 10/1000 μs waveform per IEC 61000-4-5. This value is documented in the "Electrical Characteristics" table on page 3 of the Vishay BZD27B Series datasheet and defines the maximum voltage imposed on protected circuitry during surge events.
How does the BZD27B15P-HE3_A18 compare to standard Zener diodes like the 1N4744A?
Unlike the through-hole 1N4744A (15 V, ±5 %, 1 W), the BZD27B15P-HE3_A18 offers ±2 % tolerance, 150 W peak pulse power, AEC-Q101 qualification, and DO-219AB SMD packaging. Its 11 Ω dynamic resistance and -65 °C to +175 °C operating range make it superior for modern automotive and high-reliability industrial designs where space, stability, and surge resilience are critical.
BZD27B15P-HE3_A18 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):
- 12V (Max)
- Voltage - Breakdown (Min):
- 14.7V
- Voltage - Clamping (Max) @ Ipp:
- 20.5V
- Current - Peak Pulse (10/1000µs):
- 7.2A
- 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)
BZD27B15P-HE3_A18 FAQ
1.How can I place an order for BZD27B15P-HE3_A18 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZD27B15P-HE3_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 BZD27B15P-HE3_A18 reliable?
The price and inventory of BZD27B15P-HE3_A18 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZD27B15P-HE3_A18 is usually 5 days.
3.What payment methods are accepted for BZD27B15P-HE3_A18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZD27B15P-HE3_A18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZD27B15P-HE3_A18?
BZD27B15P-HE3_A18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZD27B15P-HE3_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 BZD27B15P-HE3_A18?
For technical support, including BZD27B15P-HE3_A18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZD27B15P-HE3_A18 requirements.
6.How does Aetrix verify that BZD27B15P-HE3_A18 is sourced from the original manufacturer or authorized distributors?
All BZD27B15P-HE3_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 BZD27B15P-HE3_A18 meets industry standards.
7.What is the process for return or replacement of BZD27B15P-HE3_A18?
All BZD27B15P-HE3_A18 units undergo pre-shipment inspection (PSI). If there is an issue with BZD27B15P-HE3_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 BZD27B15P-HE3_A18 part is unused and in its original packaging.
Return procedure for BZD27B15P-HE3_A18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZD27B15P-HE3_A18 Tags
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