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Vishay BZD27B47P-HE3_A18
- Part No.:
- BZD27B47P-HE3_A18
- Manufacturer:
- Vishay
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
BZD27B47P-HE3_A18.pdf
- Description:
- ZENER DIODE SMF DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,544
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Product details
Overview
BZD27B47P-HE3_A18 from Vishay Semiconductors is a surface-mount silicon planar Zener diode rated for 47 V nominal Zener voltage (46.06–47.94 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 BZD27B47P-HE3_A18 datasheet, BZD27B47P-HE3_A18 pinout, BZD27B47P-HE3_A18 application, or BZD27B47P-HE3_A18 equivalent, key selection criteria include its AEC-Q101 qualification, ±2 % VZ tolerance, low dynamic resistance (36 Ω max at IZT), temperature coefficient (0.07–0.12 %/°C), and DO-219AB (SMF) package compatibility.
Technical Context
This unidirectional Zener diode operates in reverse breakdown to clamp transient overvoltages, with clamping voltage of 62.8 V at 5 A peak pulse current (10/1000 μs). Its thermal design supports junction temperatures up to 175 °C and features RthJA = 180 K/W on standard 3 mm × 3 mm Cu pads.
It delivers stable regulation under surge conditions per IEC 60-1, with low leakage current (≤5 μA at VR = 39 V) and meets JESD 201 Class 2 whisker testing and MSL Level 1 reflow requirements (peak 260 °C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 46.06–47.94 V at 10 mA - tight ±2 % tolerance enables precise voltage reference and clamping in safety-critical circuits |
| Clamping Voltage (VC) | 62.8 V at IRSM = 5 A (10/1000 μs) - defines maximum transient voltage seen by protected circuitry |
| Peak Surge Power (PRSM) | 150 W - sustains high-energy transients without failure, critical for automotive load-dump immunity |
| Dynamic Resistance (ZZ) | 24 Ω max at 10 mA - ensures minimal voltage shift under varying current, improving regulation accuracy |
| Temperature Coefficient (αVZ) | 0.07–0.12 %/°C - quantifies VZ drift with temperature, enabling thermal compensation in precision designs |
| Junction-to-Ambient Thermal Resistance | 180 K/W on 3 mm × 3 mm Cu pad - determines safe power derating in PCB layout |
| AEC-Q101 Qualification | Qualified - validates reliability for automotive electronics including engine control and body modules |
Pinout & Package
Package: DO-219AB (SMF), low-profile surface-mount case with cathode marking; dimensions: 2.9 × 1.4 × 1.08 mm (L × W × H); compatible with standard SOD-123W footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / surge return path | Connected to ground or low-side reference; carries reverse surge current during clamping |
| Cathode | Zener breakdown terminal / voltage reference node | Connected to protected line; establishes regulated clamping voltage relative to anode |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including powertrain and ADAS subsystems |
| ±2 % Zener voltage tolerance | Reduces binning requirements and improves system-level voltage margin predictability |
| 150 W peak surge rating (10/1000 μs) | Withstands ISO 7637-2 Pulse 5a load-dump events without degradation |
| MSL Level 1, 260 °C reflow compatible | Eliminates moisture sensitivity concerns and supports standard lead-free assembly |
| Low leakage current (≤5 μA at 39 V) | Minimizes standby power loss in always-on vehicle networks |
Applications
| Automotive Power Rail Protection | Industrial DC Bus Monitoring |
|---|---|
Use Scenario: Protecting microcontroller I/O and sensor inputs against load-dump transients in 12 V/24 V vehicle electrical systems. IC Role / Device Role / Timing Role: Unidirectional voltage clamp placed between supply rail and ground, conducting only during overvoltage events. Use Value: Limits transient voltage to ≤62.8 V, preventing damage to downstream 5 V or 3.3 V logic while maintaining AEC-Q101 compliance. | Use Scenario: Safeguarding PLC analog input modules connected to 48 V industrial power buses subject to switching surges. IC Role / Device Role / Timing Role: Standby Zener regulator that activates only during overvoltage excursions above 47 V. Use Value: Provides fail-safe clamping with 150 W surge capacity and 175 °C junction rating for harsh factory environments. |
| Telecom Power Supply Clamp | Renewable Energy Charge Controller |
Use Scenario: Secondary overvoltage protection in PoE-powered equipment where primary TVS may be undersized. IC Role / Device Role / Timing Role: Precision Zener reference used in feedback loop of DC-DC converter, also acting as fast-acting clamp. Use Value: Combines regulation stability (±2 % VZ, 0.07 %/°C TC) with robust 150 W surge handling for telecom-grade reliability. | Use Scenario: Voltage limiting in solar charge controllers exposed to lightning-induced surges on PV string inputs. IC Role / Device Role / Timing Role: Transient voltage suppressor mounted across battery terminals to prevent overcharge during grid faults. Use Value: Withstands repeated 10/1000 μs surges up to 5 A while maintaining <5 μA leakage at 39 V for low self-discharge. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ47A-E3/52 | Higher PPPM (600 W), larger SMB package (4.5 × 3.9 mm), higher VBR (52.2 V min) | Better suited for high-energy industrial transients; less space-constrained layouts | Select when surge energy exceeds 150 W and board area allows SMB footprint |
| P6SMB47A | Same DO-214AA (SMB) package, 600 W PPPM, VBR = 52.2 V min, no AEC-Q101 qualification | Commercial-grade alternative; not validated for automotive temperature cycling or humidity testing | Choose for cost-sensitive industrial applications where AEC-Q101 is not mandated |
Compared with BZD27B47P-HE3_A18, SMBJ47A-E3/52 offers higher surge capacity but requires more PCB area and lacks automotive qualification; P6SMB47A matches form factor but omits AEC-Q101 validation and has looser VZ tolerance (±5 %), reducing precision in regulated protection schemes.
Availability
BZD27B47P-HE3_A18 is available at Aetrix Electronics and suitable for automotive electronics, industrial power supplies, and renewable energy systems requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for BZD27B47P-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 AEC-Q101-compliant overvoltage protection in space-constrained automotive and industrial applications.
FAQ
What is the Zener voltage tolerance of BZD27B47P-HE3_A18?
BZD27B47P-HE3_A18 has a Zener voltage tolerance of ±2 %, specified as 46.06 V (min) to 47.94 V (max) at 10 mA test current. This tight tolerance ensures predictable clamping behavior in precision protection circuits and reduces the need for post-production calibration or binning in high-volume automotive manufacturing.
Is BZD27B47P-HE3_A18 qualified for automotive use?
Yes, BZD27B47P-HE3_A18 is AEC-Q101 qualified, meaning it has passed stress tests for temperature cycling, humidity, mechanical shock, and ESD (HBM > 8 kV, MM > 800 V). This qualification confirms its suitability for under-hood and chassis-mounted automotive applications such as engine control units and body electronics where reliability under extreme thermal and electrical stress is mandatory.
What is the maximum clamping voltage of BZD27B47P-HE3_A18 during a surge event?
The maximum clamping voltage of BZD27B47P-HE3_A18 is 62.8 V at a peak pulse current of 5 A with a 10/1000 μs waveform. This value is measured under standardized IEC 60-1 test conditions and defines the upper voltage limit imposed on protected circuitry during transient events, ensuring downstream components remain within safe operating limits.
Which package does BZD27B47P-HE3_A18 use, and what are its key mechanical features?
BZD27B47P-HE3_A18 uses the DO-219AB (SMF) package: a low-profile surface-mount case measuring 2.9 mm × 1.4 mm × 1.08 mm with cathode marking. It features MSL Level 1 moisture sensitivity, supports wave and reflow soldering up to 260 °C peak, and is compatible with SOD-123W footprints-enabling drop-in replacement in existing layouts without redesign.
How does the temperature coefficient affect BZD27B47P-HE3_A18 performance in wide-temperature environments?
The temperature coefficient of BZD27B47P-HE3_A18 is +0.07 to +0.12 %/°C, meaning its Zener voltage increases slightly with rising junction temperature. In automotive applications spanning −40 °C to +150 °C ambient, this results in ~1.5–2.5 V total VZ shift, which must be accounted for in clamping margin calculations-especially in high-temperature engine bay deployments where sustained 175 °C junction operation is permitted.
BZD27B47P-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):
- 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_A18 FAQ
1.How can I place an order for BZD27B47P-HE3_A18 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZD27B47P-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 BZD27B47P-HE3_A18 reliable?
The price and inventory of BZD27B47P-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 BZD27B47P-HE3_A18 is usually 5 days.
3.What payment methods are accepted for BZD27B47P-HE3_A18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZD27B47P-HE3_A18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZD27B47P-HE3_A18?
BZD27B47P-HE3_A18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZD27B47P-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 BZD27B47P-HE3_A18?
For technical support, including BZD27B47P-HE3_A18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZD27B47P-HE3_A18 requirements.
6.How does Aetrix verify that BZD27B47P-HE3_A18 is sourced from the original manufacturer or authorized distributors?
All BZD27B47P-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 BZD27B47P-HE3_A18 meets industry standards.
7.What is the process for return or replacement of BZD27B47P-HE3_A18?
All BZD27B47P-HE3_A18 units undergo pre-shipment inspection (PSI). If there is an issue with BZD27B47P-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 BZD27B47P-HE3_A18 part is unused and in its original packaging.
Return procedure for BZD27B47P-HE3_A18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZD27B47P-HE3_A18 Tags
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