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Vishay BZD27B56P-HE3_A18
- Part No.:
- BZD27B56P-HE3_A18
- Manufacturer:
- Vishay
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
BZD27B56P-HE3_A18.pdf
- Description:
- ZENER DIODE SMF DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,522
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Product details
Overview
BZD27B56P-HE3_A18 from Vishay Semiconductors is a surface-mount silicon planar Zener diode rated for 56 V nominal Zener voltage (54.88–57.12 V), 10 mA test current, and 150 W non-repetitive peak surge power (10/1000 μs waveform), designed for overvoltage protection in automotive power rails and industrial DC bus monitoring.
For engineers reviewing the BZD27B56P-HE3_A18 datasheet, BZD27B56P-HE3_A18 pinout, BZD27B56P-HE3_A18 application, or BZD27B56P-HE3_A18 equivalent, key selection criteria include its AEC-Q101 qualification, ±2 % VZ tolerance, low dynamic resistance (25 Ω max at IZT), temperature coefficient (0.07 to 0.12 %/°C), and DO-219AB (SMF) package compatibility.
Technical Context
This unidirectional Zener diode operates as a precision voltage reference and transient voltage suppressor, with clamping voltage of 74.8 V at 47 A peak surge current (10/1000 μs). Its junction-to-lead thermal resistance is 30 K/W, enabling high-power pulse handling without external heatsinking when mounted on standard 3 mm × 3 mm Cu pads.
The device features low leakage current (≤5 μA at VR = 47 V), meets MSL level 1 per J-STD-020 (peak reflow ≤260 °C), and passes JESD 201 Class 2 whisker testing - confirming suitability for automotive under-hood and industrial control environments requiring long-term reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 54.88–57.12 V at 10 mA - ensures stable regulation within ±2 % tolerance for 12–48 V system rail protection |
| Clamping Voltage (VC) | 74.8 V at 47 A (10/1000 μs) - defines maximum transient voltage seen by protected circuitry during ESD/surge events |
| Peak Surge Power (PRSM) | 150 W (10/1000 μs) - supports IEC 61000-4-5 Level 3/4 surge immunity in industrial interfaces |
| Dynamic Resistance (ZZ) | 25 Ω max at 10 mA - minimizes output voltage deviation under varying load or current conditions |
| Junction Temperature (Tj) | 175 °C max - enables operation in under-hood automotive environments without derating at ambient ≤125 °C |
| ESD Rating | HBM > 8 kV, MM > 800 V - exceeds AEC-Q101 requirements for robustness against handling and system-level transients |
| Package | DO-219AB (SMF) - 2.7 × 1.9 × 0.85 mm low-profile SMD footprint compatible with automated placement and reflow |
Pinout & Package
DO-219AB (SMF) package: 2-terminal surface-mount device with cathode marked by band on one end; no internal leads or exposed metal - fully encapsulated epoxy molding compound (UL 94 V-0).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction; connected to lower-potential node in protection configuration | Enables standard reverse-biased Zener operation; must be tied to ground or return path in shunt clamp topology |
| Cathode | Current exit point during Zener breakdown; connected to protected line or supply rail | Defines clamping reference - voltage at this terminal is regulated to VZ during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and body electronics with full stress testing |
| ±2 % VZ tolerance | Reduces need for post-production trimming and improves batch consistency in safety-critical voltage monitoring |
| MSL Level 1 rating | Allows unlimited floor life and single-reflow processing without baking - simplifies manufacturing logistics |
| Low-profile SMF package | 0.85 mm height enables use in space-constrained modules such as battery management systems and ADAS sensors |
| 175 °C max junction temperature | Supports uninterrupted operation in high-temperature zones (e.g., near power converters or motor drivers) |
Applications
| Automotive Power Rail Protection | Industrial DC Bus Monitoring |
|---|---|
Use Scenario: Protecting 48 V mild-hybrid vehicle power distribution networks from load-dump transients up to ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Shunt-clamp Zener diode placed across main supply rail to divert surge energy to ground before downstream regulators are stressed. Use Value: Clamps peak voltage to 74.8 V at 47 A, preventing damage to 65 V-rated MOSFETs and microcontrollers in powertrain ECUs. |
Use Scenario: Safeguarding programmable logic controller (PLC) analog input modules from field-wiring induced surges on 24 V DC control lines. IC Role / Device Role / Timing Role: Standby overvoltage protector that remains inactive until transient exceeds 56 V threshold, then conducts within nanoseconds. Use Value: Enables compliance with IEC 61000-4-4 (EFT) and IEC 61000-4-5 (surge) without adding TVS arrays or complex active circuits. |
| Telecom Power Supply Clamp | Renewable Energy Inverter Gate Drive Protection |
Use Scenario: Secondary-side overvoltage suppression in telecom rectifier modules where 56 V nominal bus voltage powers base station RF amplifiers. IC Role / Device Role / Timing Role: Precision Zener reference and fast-acting clamp integrated into feedback loop and output stage simultaneously. Use Value: Maintains ±2 % regulation accuracy while absorbing 150 W surge pulses - eliminating need for separate reference and protection devices. |
Use Scenario: Protecting isolated gate driver ICs in solar inverter half-bridges from Miller-induced voltage spikes during high dV/dt switching. IC Role / Device Role / Timing Role: Low-capacitance (typ. 25 pF at 0 V) shunt element placed between gate and source to clamp overshoot without slowing turn-on. Use Value: Limits gate-source voltage to ≤74.8 V during transients, preventing unintended IGBT/MOSFET turn-on and shoot-through failure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ56A-E3/52 (Vishay) | Higher PPPM (600 W), larger SMB package (4.5 × 3.9 mm), higher clamping voltage (93.6 V at 52.6 A) | Better suited for primary-side surge suppression where PCB area allows larger footprint | Select when higher surge margin is required and board space permits larger package |
| P6SMB56A (ON Semiconductor) | Same DO-214AA (SMB) package, 56 V VBR, but only ±5 % tolerance and no AEC-Q101 qualification | Acceptable for commercial-grade industrial power supplies but not automotive systems | Choose for cost-sensitive non-automotive designs where ±5 % VZ is acceptable |
Compared with BZD27B56P-HE3_A18, SMBJ56A-E3/52 offers greater surge capacity at the expense of size and tighter regulation, while P6SMB56A sacrifices automotive qualification and precision for lower unit cost - making BZD27B56P-HE3_A18 optimal for space-constrained, AEC-Q101–mandated applications needing ±2 % stability.
Availability
BZD27B56P-HE3_A18 is available at Aetrix Electronics and suitable for automotive power rail protection, industrial DC bus monitoring, and renewable energy inverter gate drive protection requiring stable component supply, AEC-Q101 traceability, and consistent ±2 % Zener voltage performance.
Supply support for BZD27B56P-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 Intertechnology is a global semiconductor manufacturer specializing in discrete components, passive elements, and sensors with emphasis on reliability, precision, and automotive-grade qualification.
The BZD27B Series belongs to Vishay's eSMP® Zener diode platform, engineered specifically for high-surge, high-temperature automotive and industrial protection applications where compact size and tight voltage tolerance are critical.
FAQ
What is the Zener voltage tolerance of BZD27B56P-HE3_A18?
The BZD27B56P-HE3_A18 has a nominal Zener voltage of 56 V with a guaranteed tolerance of ±2 %, corresponding to a range of 54.88 V to 57.12 V at 10 mA test current. This tight tolerance is specified per the BZD27B Series datasheet Rev. 2.1 and applies to all AEC-Q101–qualified variants including BZD27B56P-HE3_A18.
Is BZD27B56P-HE3_A18 qualified for automotive applications?
Yes, BZD27B56P-HE3_A18 is AEC-Q101 qualified, as indicated by the "-HE3" suffix in its ordering code. It meets stress test requirements for temperature cycling, humidity bias, mechanical shock, and ESD (HBM > 8 kV, MM > 800 V), making it suitable for under-hood and chassis-mounted automotive electronics.
What is the maximum clamping voltage of BZD27B56P-HE3_A18 during surge events?
The BZD27B56P-HE3_A18 exhibits a maximum clamping voltage (VC) of 74.8 V at 47 A peak surge current under the 10/1000 μs waveform condition. This value is measured per IEC 61000-4-5 and defines the upper voltage limit imposed on protected circuitry during standardized surge tests.
Which package does BZD27B56P-HE3_A18 use, and what are its dimensions?
BZD27B56P-HE3_A18 uses the DO-219AB (SMF) package: 2.7 mm × 1.9 mm × 0.85 mm with cathode band marking. Its footprint matches JEDEC standard SMF outline and is compatible with standard 8 mm tape-and-reel handling for SMT assembly.
Does BZD27B56P-HE3_A18 require derating at elevated ambient temperatures?
Yes, BZD27B56P-HE3_A18 requires thermal derating above 30 °C ambient. Its total power dissipation drops from 800 mW at TA = 30 °C to zero at TA = 105 °C, per the RthJA = 180 K/W rating on 3 mm × 3 mm Cu pads. Full 2300 mW rating applies only at lead temperature (TL) = 105 °C.
BZD27B56P-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):
- 47V (Max)
- Voltage - Breakdown (Min):
- 54.88V
- Voltage - Clamping (Max) @ Ipp:
- 74.8V
- Current - Peak Pulse (10/1000µs):
- 1.9A
- 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)
BZD27B56P-HE3_A18 FAQ
1.How can I place an order for BZD27B56P-HE3_A18 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZD27B56P-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 BZD27B56P-HE3_A18 reliable?
The price and inventory of BZD27B56P-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 BZD27B56P-HE3_A18 is usually 5 days.
3.What payment methods are accepted for BZD27B56P-HE3_A18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZD27B56P-HE3_A18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZD27B56P-HE3_A18?
BZD27B56P-HE3_A18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZD27B56P-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 BZD27B56P-HE3_A18?
For technical support, including BZD27B56P-HE3_A18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZD27B56P-HE3_A18 requirements.
6.How does Aetrix verify that BZD27B56P-HE3_A18 is sourced from the original manufacturer or authorized distributors?
All BZD27B56P-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 BZD27B56P-HE3_A18 meets industry standards.
7.What is the process for return or replacement of BZD27B56P-HE3_A18?
All BZD27B56P-HE3_A18 units undergo pre-shipment inspection (PSI). If there is an issue with BZD27B56P-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 BZD27B56P-HE3_A18 part is unused and in its original packaging.
Return procedure for BZD27B56P-HE3_A18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZD27B56P-HE3_A18 Tags
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