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Vishay BZD27B43P-HE3_A18
- Part No.:
- BZD27B43P-HE3_A18
- Manufacturer:
- Vishay
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
BZD27B43P-HE3_A18.pdf
- Description:
- ZENER DIODE SMF DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,740
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Product details
Overview
BZD27B43P-HE3_A18 from Vishay Semiconductors is a surface-mount, AEC-Q101 qualified Zener diode with nominal 43 V breakdown voltage (±2 % tolerance), 10 mA test current, 36 Ω dynamic resistance at IZT, and 57.9 V clamping voltage at 5 A surge current. It serves as a precision voltage reference and transient overvoltage protector in automotive power rail monitoring circuits.
For engineers reviewing the BZD27B43P-HE3_A18 datasheet, BZD27B43P-HE3_A18 pinout, BZD27B43P-HE3_A18 application, or BZD27B43P-HE3_A18 equivalent, key selection criteria include its ±2 % VZ tolerance, 150 W peak surge power rating (10/1000 μs), -65 °C to +175 °C operating temperature range, and DO-219AB (SMF) package compatibility with automated SMT assembly.
Technical Context
This unidirectional Zener diode operates in reverse-bias breakdown mode for voltage regulation and transient suppression. Its design integrates low leakage current (<5 μA at VR = 36 V), stable temperature coefficient (+0.07 to +0.12 %/°C), and robust surge capability per IEC 60-1 (10/1000 μs waveform).
The device uses silicon planar construction and meets JESD201 Class 2 whisker testing, MSL Level 1 per J-STD-020, and AEC-Q101 qualification-enabling use in under-hood automotive electronics where thermal cycling and mechanical reliability are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 42.14 V min., 43 V nom., 43.86 V max. - tight ±2 % tolerance enables accurate voltage reference in feedback loops. |
| Test Current (IZT) | 10 mA - standardized bias point for specifying VZ and dynamic impedance. |
| Dynamic Resistance (ZZ) | 24 Ω max. at IZT - low impedance ensures stable regulation under load variation. |
| Clamping Voltage (VC) | 57.9 V at IRSM = 5 A (10/1000 μs) - defines maximum voltage seen by protected circuit during surge events. |
| Peak Surge Power (PRSM) | 150 W - supports high-energy transient suppression without failure in automotive load-dump scenarios. |
| Junction Temperature (TJ) | 175 °C max. - enables operation in high-ambient environments such as engine control units. |
| Package | DO-219AB (SMF) - low-profile 2.7 × 3.9 mm surface-mount outline compatible with standard SMT reflow profiles. |
Pinout & Package
DO-219AB (SMF) package: cathode-marked, single-diode configuration in a low-profile, molded plastic case with gull-wing terminals. Dimensions: 2.7 mm × 3.9 mm × 1.08 mm (L × W × H); weight: 15 mg; flammability: UL 94 V-0.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential node in reverse-bias protection configuration; carries forward current up to 0.2 A (VF ≤ 1.2 V). |
| Cathode | Zener breakdown terminal | Marked end; connected to higher-potential node; conducts controlled reverse current above VZ to clamp overvoltage. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control, body electronics, and ADAS power domains. |
| ±2 % Zener voltage tolerance | Enables precise voltage setting without post-production trimming in safety-critical sensing and regulation circuits. |
| 150 W peak surge power (10/1000 μs) | Withstands ISO 7637-2 Pulse 5a load-dump transients in 12 V vehicle systems without derating. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and direct placement into reflow ovens without baking preconditioning. |
| JESD201 Class 2 whisker resistance | Prevents tin whisker growth-induced short circuits in long-life automotive modules (>15 years). |
Applications
| Automotive Engine Control Unit (ECU) | Industrial PLC Input Protection |
|---|---|
Use Scenario: Protecting microcontroller ADC reference inputs from battery voltage spikes during cold-cranking or alternator load dump. IC Role / Device Role / Timing Role: Precision shunt regulator and transient voltage suppressor placed between VREF and ground. Use Value: Maintains ADC accuracy by limiting input voltage to ≤57.9 V during 150 W surges while holding 43 V reference within ±2 %. |
Use Scenario: Safeguarding 24 V DC digital input channels against field-wiring induced transients in factory automation cabinets. IC Role / Device Role / Timing Role: Primary overvoltage clamp on signal line before optocoupler input stage. Use Value: Limits transient energy to safe levels for downstream isolation components using its 150 W surge rating and low ZZ. |
| Automotive Body Control Module (BCM) | Telecom Power Supply Monitoring |
Use Scenario: Stabilizing supply voltage for LIN bus transceivers exposed to intermittent battery disconnect/reconnect events. IC Role / Device Role / Timing Role: Zener reference for local LDO enable threshold and overvoltage detector. Use Value: Provides repeatable 43 V trip point across -40 °C to +125 °C ambient with <±0.12 %/°C TC, ensuring consistent fault detection. |
Use Scenario: Monitoring -48 V telecom rectifier output for overvoltage shutdown in distributed power architecture. IC Role / Device Role / Timing Role: High-precision voltage monitor element in comparator-based OVP circuit. Use Value: Delivers 43 V reference with 24 Ω ZZ and <5 μA leakage at 36 V, minimizing quiescent error in sensing path. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ43A-E3/52 (Vishay) | TVS diode, 43 V standoff, 65.8 V clamping at 10.2 A, 600 W peak power | Designed for fast transient suppression (tr < 1 ns), not precision regulation | Select when surge energy exceeds 150 W or sub-nanosecond response required; not suitable as voltage reference. |
| BZX84-C43 (Nexperia) | SOT-23 package, ±5 % VZ tolerance, 90 Ω ZZ, 150 mW PD, no AEC-Q101 | Limited to low-power consumer-grade regulation; insufficient surge rating for automotive | Acceptable only for non-automotive, low-current reference use; lacks thermal and surge robustness of BZD27B43P-HE3_A18. |
Compared with SMBJ43A-E3/52 and BZX84-C43, the BZD27B43P-HE3_A18 uniquely combines ±2 % regulation accuracy, 150 W surge capability, AEC-Q101 qualification, and DO-219AB thermal performance-making it the sole choice for automotive-grade precision clamping where both stability and ruggedness are mandatory.
Availability
BZD27B43P-HE3_A18 is available at Aetrix Electronics and suitable for automotive ECU design, industrial PLC input protection, and telecom power monitoring requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for BZD27B43P-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 targets automotive-grade voltage regulation and transient protection, engineered specifically to meet AEC-Q101 stress requirements and operate reliably from -65 °C to +175 °C junction temperature.
FAQ
What is the Zener voltage tolerance of the BZD27B43P-HE3_A18?
The BZD27B43P-HE3_A18 has a nominal Zener voltage of 43 V with a guaranteed tolerance of ±2 %, meaning the actual breakdown voltage falls between 42.14 V and 43.86 V at 10 mA test current. This tight tolerance is specified per the BZD27B Series family and confirmed in the Vishay datasheet revision 2.1. The BZD27B43P-HE3_A18 achieves this via silicon planar process control and 100 % parametric screening.
Is the BZD27B43P-HE3_A18 suitable for automotive applications?
Yes, the BZD27B43P-HE3_A18 is AEC-Q101 qualified and explicitly rated for automotive use. It meets JESD201 Class 2 whisker testing, MSL Level 1 handling, and operates from -65 °C to +175 °C junction temperature. Its 150 W surge rating aligns with ISO 7637-2 Pulse 5a requirements, making the BZD27B43P-HE3_A18 appropriate for engine control, body electronics, and ADAS power domains.
What package does the BZD27B43P-HE3_A18 use, and what are its dimensions?
The BZD27B43P-HE3_A18 uses the DO-219AB (SMF) surface-mount package: 2.7 mm × 3.9 mm footprint, 1.08 mm height, with gull-wing terminals and cathode marking. Per Vishay document S8-V-3915.01-001, the package meets UL 94 V-0 flammability and supports wave/reflow soldering at peak temperatures up to 260 °C. This compact outline enables high-density PCB layouts while maintaining thermal performance.
How does the BZD27B43P-HE3_A18 perform under surge conditions?
The BZD27B43P-HE3_A18 delivers 150 W peak surge power for 10/1000 μs waveform and 300 W for 100 μs square pulse, with clamping voltage limited to 57.9 V at 5 A. Its thermal resistance RthJA is 180 K/W on a 3 mm × 3 mm Cu pad, enabling effective heat dissipation during repetitive transients. These values are measured per IEC 60-1 and documented in the BZD27B Series datasheet section "Absolute Maximum Ratings" and "Electrical Characteristics".
What is the temperature coefficient of the BZD27B43P-HE3_A18?
The BZD27B43P-HE3_A18 has a Zener voltage temperature coefficient (αVZ) ranging from +0.07 %/°C minimum to +0.12 %/°C maximum at 10 mA test current. This positive TC indicates VZ increases with junction temperature-a characteristic confirmed in the "Electrical Characteristics" table of the Vishay datasheet. The BZD27B43P-HE3_A18's TC supports stable reference behavior in wide-temperature automotive environments.
BZD27B43P-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):
- 36V (Max)
- Voltage - Breakdown (Min):
- 42.14V
- Voltage - Clamping (Max) @ Ipp:
- 57.9V
- Current - Peak Pulse (10/1000µs):
- 2.5A
- 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)
BZD27B43P-HE3_A18 FAQ
1.How can I place an order for BZD27B43P-HE3_A18 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZD27B43P-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 BZD27B43P-HE3_A18 reliable?
The price and inventory of BZD27B43P-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 BZD27B43P-HE3_A18 is usually 5 days.
3.What payment methods are accepted for BZD27B43P-HE3_A18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZD27B43P-HE3_A18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZD27B43P-HE3_A18?
BZD27B43P-HE3_A18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZD27B43P-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 BZD27B43P-HE3_A18?
For technical support, including BZD27B43P-HE3_A18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZD27B43P-HE3_A18 requirements.
6.How does Aetrix verify that BZD27B43P-HE3_A18 is sourced from the original manufacturer or authorized distributors?
All BZD27B43P-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 BZD27B43P-HE3_A18 meets industry standards.
7.What is the process for return or replacement of BZD27B43P-HE3_A18?
All BZD27B43P-HE3_A18 units undergo pre-shipment inspection (PSI). If there is an issue with BZD27B43P-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 BZD27B43P-HE3_A18 part is unused and in its original packaging.
Return procedure for BZD27B43P-HE3_A18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZD27B43P-HE3_A18 Tags
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ESD9B5.0ST5G
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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D12V0L1B2LP-7B
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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