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Vishay BZD27B56P-HE3_A08
- Part No.:
- BZD27B56P-HE3_A08
- Manufacturer:
- Vishay
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
BZD27B56P-HE3_A08.pdf
- Description:
- ZENER DIODE SMF DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,479
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Product details
Overview
BZD27B56P-HE3_A08 from Vishay Semiconductors is a surface-mount silicon planar Zener diode rated for 56 V nominal breakdown voltage (±2 % tolerance), 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 circuits.
For engineers reviewing the BZD27B56P-HE3_A08 datasheet, BZD27B56P-HE3_A08 pinout, BZD27B56P-HE3_A08 application, or BZD27B56P-HE3_A08 equivalent, key selection criteria include its AEC-Q101 qualification, 74.8 V clamping voltage at 47 A surge current, ±0.07 to +0.12 %/°C temperature coefficient, and DO-219AB (SMF) package compatibility with high-density PCB layouts.
Technical Context
This unidirectional Zener diode operates as a precision voltage reference and transient voltage suppressor in reverse-biased mode. Its 56 V nominal Zener voltage is specified at 10 mA test current with 43 Ω typical dynamic resistance and 1.9 V temperature coefficient range, enabling stable regulation under varying thermal conditions.
Designed for automotive-grade reliability, it meets JESD201 Class 2 whisker testing, MSL Level 1 moisture sensitivity, and supports wave/reflow soldering up to 260 °C peak. The device delivers 150 W peak surge power handling per IEC 61000-4-5 (10/1000 μs) with 175 °C maximum junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 54.88–57.12 V at 10 mA - ensures tight regulation within ±2 % for stable reference or clamp threshold |
| Clamping Voltage (VC) | 74.8 V at 47 A surge - defines maximum voltage seen by protected circuit during transient events |
| Peak Surge Power (PRSM) | 150 W (10/1000 μs) - enables robust protection against lightning-induced surges and load dump transients |
| Temperature Coefficient (αVZ) | +0.07 to +0.12 %/°C - low drift supports accuracy 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 - provides immunity to electrostatic discharge during handling and assembly |
| AEC-Q101 Qualified | Yes - validated for automotive electronics including engine control units and body modules |
Pinout & Package
Package: DO-219AB (SMF), low-profile surface-mount case with cathode marking; dimensions 2.9 × 1.9 × 0.85 mm (L × W × H); compatible with SOD-123W footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias | Connected to lower-potential node; forward voltage ≤1.2 V at 0.2 A enables low-loss biasing |
| Cathode | Current exit terminal in forward bias; Zener reference terminal in reverse bias | Marked end; reverse-biased connection to protected line establishes 56 V clamping threshold |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including powertrain and chassis systems |
| 150 W peak surge rating (10/1000 μs) | Supports ISO 7637-2 and ISO 16750-2 compliance for load dump and pulse suppression |
| ±2 % Zener voltage tolerance | Reduces need for post-production calibration in precision voltage reference designs |
| MSL Level 1 moisture sensitivity | Enables standard reflow without baking, lowering manufacturing cost and cycle time |
| JESD201 Class 2 whisker resistance | Ensures long-term solder joint integrity in high-vibration environments like engine compartments |
Applications
| Automotive Load Dump Protection | Industrial DC Bus Monitoring |
|---|---|
Use Scenario: Suppresses 120 V transients induced by alternator load dump in 12 V vehicle electrical systems. IC Role / Device Role / Timing Role: Unidirectional Zener clamp placed between battery rail and ECU input, conducting only during overvoltage events. Use Value: Limits voltage to 74.8 V at 47 A, preventing damage to downstream 5 V/3.3 V regulators and microcontrollers. | Use Scenario: Protects analog front-end inputs of programmable logic controllers monitoring 48 V DC distribution buses. IC Role / Device Role / Timing Role: Standby voltage reference and transient suppressor connected across sensing terminals. Use Value: Maintains ±2 % Zener accuracy across -40 to +125 °C ambient, ensuring reliable fault detection thresholds. |
| Telecom Power Supply Clamp | Renewable Energy Inverter Gate Drive Protection |
Use Scenario: Clamps flyback spikes on 48 V telecom rectifier outputs during hot-swap events. IC Role / Device Role / Timing Role: Reverse-biased Zener shunt element placed at DC output stage before filtering. Use Value: Absorbs 150 W surge energy without degradation, meeting GR-1089-CORE immunity requirements. | Use Scenario: Shields isolated gate drivers in solar inverters from Miller-induced voltage overshoot during IGBT switching. IC Role / Device Role / Timing Role: Fast-response clamp referenced to driver ground, limiting gate-emitter voltage excursion. Use Value: 74.8 V clamping voltage prevents gate oxide breakdown while maintaining <43 Ω dynamic impedance for rapid energy dissipation. |
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 | Higher 600 W peak power (8/20 μs), but ±5 % VZ tolerance and no AEC-Q101 qualification | Preferred for general-purpose surge suppression where automotive qualification is not required | Select when higher surge margin is needed and tighter voltage tolerance is not critical |
| P6SMB56AHE3_A/H | Same 56 V nominal rating, ±5 % tolerance, 600 W peak power, AEC-Q101 qualified, but larger SMB package (4.6 × 3.9 mm) | Suitable for designs requiring higher surge endurance and board space allows larger footprint | Choose when layout permits larger package and 600 W surge capability outweighs size constraints |
Compared with BZD27B56P-HE3_A08, SMBJ56A-E3/52 offers greater surge headroom but sacrifices voltage precision and automotive qualification; P6SMB56AHE3_A/H matches AEC-Q101 compliance and improves surge rating but requires 2.5× more PCB area-making BZD27B56P-HE3_A08 optimal for space-constrained automotive modules needing ±2 % regulation.
Availability
BZD27B56P-HE3_A08 is available at Aetrix Electronics and suitable for automotive electronics, industrial power supplies, and telecom infrastructure requiring stable component supply, AEC-Q101 validation, and high-reliability surge suppression.
Supply support for BZD27B56P-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 belongs to Vishay's eSMP® Zener portfolio, engineered specifically for AEC-Q101-compliant overvoltage protection in space-constrained automotive and industrial systems.
FAQ
What is the Zener voltage tolerance for BZD27B56P-HE3_A08?
The BZD27B56P-HE3_A08 has a Zener voltage tolerance of ±2 %, specified as 54.88 V minimum to 57.12 V maximum at 10 mA test current. This tight tolerance enables precise voltage clamping and reference applications without additional trimming components, supporting design stability in automotive and industrial systems where regulatory compliance depends on accurate threshold setting.
Is BZD27B56P-HE3_A08 qualified for automotive use?
Yes, BZD27B56P-HE3_A08 is AEC-Q101 qualified, having passed stress tests including high-temperature operating life, temperature cycling, and mechanical shock. Its qualification covers operation from -65 °C to +175 °C junction temperature and validates suitability for engine control units, body control modules, and ADAS power domains where reliability under harsh environmental conditions is mandatory.
What is the clamping voltage of BZD27B56P-HE3_A08 under surge conditions?
The clamping voltage of BZD27B56P-HE3_A08 is 74.8 V at 47 A peak surge current (10/1000 μs waveform). This value represents the maximum voltage imposed on the protected circuit during standardized transient events, directly supporting compliance with ISO 7637-2 Pulse 5a (load dump) and ensuring downstream ICs remain within safe operating limits.
Which package does BZD27B56P-HE3_A08 use, and is it RoHS-compliant?
BZD27B56P-HE3_A08 uses the DO-219AB (SMF) package-a low-profile surface-mount case measuring 2.9 × 1.9 × 0.85 mm-and is RoHS-compliant per EU Directive 2011/65/EU. The "HE3" suffix confirms both RoHS compliance and AEC-Q101 qualification, while the "A08" denotes 3000 units per 7-inch reel in 8 mm tape.
How does the temperature coefficient affect BZD27B56P-HE3_A08 performance?
The temperature coefficient of BZD27B56P-HE3_A08 ranges from +0.07 to +0.12 %/°C, meaning its Zener voltage increases predictably with rising junction temperature. This positive drift supports stable operation across wide ambient ranges (-65 to +175 °C), minimizing calibration drift in automotive and industrial applications where thermal gradients are significant and long-term reference accuracy is critical.
BZD27B56P-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):
- 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_A08 FAQ
1.How can I place an order for BZD27B56P-HE3_A08 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZD27B56P-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 BZD27B56P-HE3_A08 reliable?
The price and inventory of BZD27B56P-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 BZD27B56P-HE3_A08 is usually 5 days.
3.What payment methods are accepted for BZD27B56P-HE3_A08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZD27B56P-HE3_A08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZD27B56P-HE3_A08?
BZD27B56P-HE3_A08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZD27B56P-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 BZD27B56P-HE3_A08?
For technical support, including BZD27B56P-HE3_A08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZD27B56P-HE3_A08 requirements.
6.How does Aetrix verify that BZD27B56P-HE3_A08 is sourced from the original manufacturer or authorized distributors?
All BZD27B56P-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 BZD27B56P-HE3_A08 meets industry standards.
7.What is the process for return or replacement of BZD27B56P-HE3_A08?
All BZD27B56P-HE3_A08 units undergo pre-shipment inspection (PSI). If there is an issue with BZD27B56P-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 BZD27B56P-HE3_A08 part is unused and in its original packaging.
Return procedure for BZD27B56P-HE3_A08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZD27B56P-HE3_A08 Tags
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Diodes Incorporated
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