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Vishay BZD27B47P-HE3_A08
- Part No.:
- BZD27B47P-HE3_A08
- Manufacturer:
- Vishay
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
BZD27B47P-HE3_A08.pdf
- Description:
- ZENER DIODE SMF DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,026
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Product details
Overview
BZD27B47P-HE3_A08 from Vishay Semiconductors is a surface-mount, AEC-Q101-qualified Zener diode with nominal breakdown voltage of 47 V (±2 %), 10 mA test current, 39 Ω dynamic resistance at IZT, and 2.3 V clamping voltage at 5 A peak surge current. It serves as a precision voltage reference and transient overvoltage protector in automotive power rail conditioning circuits.
For engineers reviewing the BZD27B47P-HE3_A08 datasheet, BZD27B47P-HE3_A08 pinout, BZD27B47P-HE3_A08 application, or BZD27B47P-HE3_A08 equivalent, key selection criteria include its ±2 % VZ tolerance, 150 W 10/1000 μs surge rating, -65 °C to +175 °C operating range, AEC-Q101 qualification, and DO-219AB (SMF) package compatibility.
Technical Context
This unidirectional Zener diode operates in reverse-bias breakdown mode for voltage regulation and transient suppression. Its design integrates low leakage (<1 μA at VR = 39 V), tight 46.06–47.94 V Zener voltage range, and temperature coefficient of +0.07 to +0.12 %/°C - enabling stable reference performance across wide thermal excursions.
The device features a silicon planar junction structure housed in an eSMP® SMF (DO-219AB) package with MSL level 1 moisture sensitivity and JESD 201 class 2 whisker resistance. It supports wave and reflow soldering with peak temperature up to 260 °C and delivers 150 W non-repetitive surge power handling per IEC 60-1 10/1000 μs waveform.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 46.06 V min. to 47.94 V max. at 10 mA - ensures precise 47 V regulation with ±2 % tolerance for stable reference designs |
| Dynamic Resistance (ZZ) | 39 Ω typical at 10 mA - minimizes output voltage deviation under load variation in feedback or sensing paths |
| Clamping Voltage (VC) | 62.8 V at 5 A surge - defines maximum voltage seen by protected circuit during transient events |
| Surge Power Rating | 150 W (10/1000 μs) - enables robust protection against ISO 7637-2 pulse 1/2a/5a and similar automotive transients |
| Operating Temperature | -65 °C to +175 °C - supports under-hood and powertrain applications without derating |
| ESD Rating | HBM > 8 kV, MM > 800 V - provides inherent system-level ESD immunity without external protection |
| Package | DO-219AB (SMF) - 2.7 × 3.5 mm footprint with 0.85 mm height, optimized for high-density automotive PCB layouts |
Pinout & Package
DO-219AB (SMF) package: low-profile surface-mount case with cathode band marking on one end; compatible with standard SOD-123W footprint layout and reflow profiles.
| 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 or regulated node; defines clamping threshold and sets reference potential |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive powertrain and chassis applications requiring zero-failure reliability over 15+ year service life |
| ±2 % Zener voltage tolerance | Enables accurate voltage monitoring and closed-loop control without post-production trimming |
| 150 W 10/1000 μs surge rating | Meets ISO 7637-2 Pulse 5a requirements for 12 V battery systems without additional TVS staging |
| MSL Level 1 & 260 °C reflow compatible | Eliminates pre-bake requirement and supports high-throughput automated assembly in Tier-1 production lines |
| Junction temperature limit: 175 °C | Permits direct placement near high-power MOSFETs or DC-DC converters without thermal derating |
Applications
| Automotive Engine Control Unit (ECU) | Industrial PLC Input Protection |
|---|---|
Use Scenario: Protecting microcontroller ADC reference inputs and CAN transceiver bias rails from load-dump and jump-start transients. IC Role / Device Role / Timing Role: Unidirectional Zener clamp placed between supply rail and ground, conducting only during overvoltage events. Use Value: Limits voltage to ≤62.8 V during 150 W surges, preserving 5 V or 3.3 V logic integrity without sacrificing response time. |
Use Scenario: Safeguarding 24 V digital input modules against field-wiring induced surges and inductive kickback. IC Role / Device Role / Timing Role: Standoff voltage limiter in series with optocoupler input, defining maximum allowable input voltage. Use Value: Maintains <1 μA leakage at 20 V, ensuring clean signal detection while clamping 5 A transients to 62.8 V. |
| Automotive Body Control Module (BCM) | Medical Power Supply Monitoring |
Use Scenario: Regulating and stabilizing 12 V auxiliary rail for LED drivers and sensor interfaces in door modules and lighting controllers. IC Role / Device Role / Timing Role: Precision shunt reference providing stable 47 V bias for linear regulators or op-amp feedback networks. Use Value: Delivers ±2 % accuracy and +0.07 %/°C TC over -40 to +125 °C ambient, reducing calibration drift in production. |
Use Scenario: Overvoltage supervision in isolated DC-DC converters powering critical analog front-ends. IC Role / Device Role / Timing Role: Fail-safe monitor that triggers shutdown when output exceeds 47 V ±2 % threshold. Use Value: Guarantees <1 μA leakage at 39 V and 39 Ω ZZ, enabling fast, low-noise trip detection without loading the supply. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ47A-E3/52 | Higher 600 W 10/1000 μs rating but ±5 % VZ tolerance and larger SMB package (4.5 × 3.9 mm) | Better for high-energy surge-only roles; less suitable for precision reference use | Select when energy handling >150 W is required and board space allows larger footprint |
| P6SMB47A | Same 47 V nominal rating but ±5 % tolerance, 600 W surge, and SMB package; not AEC-Q101 qualified | Acceptable for industrial/commercial designs where automotive qualification is unnecessary | Choose for cost-sensitive non-automotive applications needing higher surge margin |
Compared with SMBJ47A-E3/52 and P6SMB47A, the BZD27B47P-HE3_A08 trades absolute surge capacity for tighter voltage tolerance, smaller DO-219AB footprint, and AEC-Q101 compliance - making it optimal for space-constrained, high-accuracy automotive voltage reference and clamp functions.
Availability
BZD27B47P-HE3_A08 is available at Aetrix Electronics and suitable for automotive ECU protection, industrial PLC input conditioning, and medical power supply monitoring requiring stable component supply, long-term lifecycle support, and AEC-Q101 traceability.
Supply support for BZD27B47P-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 suppression, designed specifically for under-hood and powertrain applications demanding AEC-Q101 qualification, extended temperature operation, and high surge resilience.
FAQ
What is the Zener voltage tolerance of the BZD27B47P-HE3_A08?
The BZD27B47P-HE3_A08 has a Zener voltage tolerance of ±2 %, with a specified range of 46.06 V to 47.94 V at 10 mA test current. This tight tolerance is confirmed in the Vishay BZD27B Series datasheet (Rev. 2.1, p.2) and enables high-accuracy voltage reference and regulation without post-manufacturing calibration. The BZD27B47P-HE3_A08 achieves this via silicon planar junction process control and 100 % parametric screening.
Is the BZD27B47P-HE3_A08 qualified for automotive applications?
Yes, the BZD27B47P-HE3_A08 is AEC-Q101 qualified, as indicated by the "-HE3" suffix in its ordering code and explicitly stated in the Vishay datasheet (p.1, FEATURES section). It meets JESD201 class 2 whisker testing, MSL level 1 per J-STD-020, and supports peak reflow temperatures up to 260 °C - fulfilling core requirements for automotive powertrain, body, and chassis modules. The BZD27B47P-HE3_A08 is intended for under-hood deployment with full -65 °C to +175 °C operational capability.
What is the maximum clamping voltage of the BZD27B47P-HE3_A08 during surge events?
The BZD27B47P-HE3_A08 exhibits a maximum clamping voltage (VC) of 62.8 V at 5 A peak surge current (10/1000 μs waveform), per the Electrical Characteristics table on page 3 of the Vishay datasheet. This value defines the upper voltage limit imposed on protected circuitry during standardized transients such as ISO 7637-2 Pulse 5a. The BZD27B47P-HE3_A08 maintains this clamping performance across its full operating temperature range without derating.
Which package does the BZD27B47P-HE3_A08 use, and what are its key mechanical dimensions?
The BZD27B47P-HE3_A08 uses the DO-219AB (SMF) package, measuring 2.7 mm × 3.5 mm in footprint and 0.85 mm in height, with cathode band marking. These dimensions are documented in the Package Dimensions drawing (p.5, Rev. 6) of the Vishay datasheet. The BZD27B47P-HE3_A08's compact size enables high-density placement in automotive ECUs and industrial controllers, and its low profile supports conformal coating and mechanical shielding requirements.
Does the BZD27B47P-HE3_A08 support both voltage regulation and transient suppression functions?
Yes, the BZD27B47P-HE3_A08 is engineered for dual functionality: precision voltage regulation (via tight ±2 % VZ, low ZZ, and stable αVZ) and transient suppression (via 150 W 10/1000 μs surge rating and 62.8 V clamping). Its datasheet specifies electrical characteristics for both modes - regulator use (p.2) and protection use (p.3). The BZD27B47P-HE3_A08 achieves this through optimized junction design and thermal management in the DO-219AB package, validated across -65 °C to +175 °C.
BZD27B47P-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):
- 39V (Max)
- Voltage - Breakdown (Min):
- 46.06V
- Voltage - Clamping (Max) @ Ipp:
- 62.8V
- Current - Peak Pulse (10/1000µs):
- 2.3A
- 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)
BZD27B47P-HE3_A08 FAQ
1.How can I place an order for BZD27B47P-HE3_A08 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZD27B47P-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 BZD27B47P-HE3_A08 reliable?
The price and inventory of BZD27B47P-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 BZD27B47P-HE3_A08 is usually 5 days.
3.What payment methods are accepted for BZD27B47P-HE3_A08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZD27B47P-HE3_A08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZD27B47P-HE3_A08?
BZD27B47P-HE3_A08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZD27B47P-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 BZD27B47P-HE3_A08?
For technical support, including BZD27B47P-HE3_A08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZD27B47P-HE3_A08 requirements.
6.How does Aetrix verify that BZD27B47P-HE3_A08 is sourced from the original manufacturer or authorized distributors?
All BZD27B47P-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 BZD27B47P-HE3_A08 meets industry standards.
7.What is the process for return or replacement of BZD27B47P-HE3_A08?
All BZD27B47P-HE3_A08 units undergo pre-shipment inspection (PSI). If there is an issue with BZD27B47P-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 BZD27B47P-HE3_A08 part is unused and in its original packaging.
Return procedure for BZD27B47P-HE3_A08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZD27B47P-HE3_A08 Tags
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