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Vishay BZD27B68P-HE3_A18
- Part No.:
- BZD27B68P-HE3_A18
- Manufacturer:
- Vishay
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
BZD27B68P-HE3_A18.pdf
- Description:
- ZENER DIODE SMF DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,029
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Product details
Overview
BZD27B68P-HE3_A18 from Vishay Semiconductors is a surface-mount, AEC-Q101 qualified Zener diode with nominal breakdown voltage of 68 V, ±2 % tolerance, 10 mA test current, and 150 W peak surge power rating (10/1000 μs waveform). It operates as a precision voltage reference and transient voltage suppressor in automotive power rail protection circuits.
For engineers reviewing the BZD27B68P-HE3_A18 datasheet, BZD27B68P-HE3_A18 pinout, BZD27B68P-HE3_A18 application, or BZD27B68P-HE3_A18 equivalent, key selection criteria include its 68 V Zener voltage, 1.6 V clamping voltage at 56 A, -65 °C to +175 °C operating range, and DO-219AB (SMF) package compatibility with automated SMT assembly.
Technical Context
This unidirectional Zener diode delivers stable voltage regulation under DC bias and robust transient suppression during surge events. Its 66.64 V minimum / 69.36 V maximum Zener voltage range at 10 mA ensures tight tolerance control for automotive ECU reference rails.
The device features low dynamic resistance (25 Ω typical at IZT), temperature coefficient of +0.08 to +0.13 %/°C, and clamps to 90.9 V at 56 A (10/1000 μs pulse), enabling reliable overvoltage protection in 12 V and 24 V vehicle systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 68 V nominal, 66.64–69.36 V range at 10 mA - enables precise 68 V rail regulation with minimal drift |
| Clamping Voltage (VC) | 90.9 V at 56 A (10/1000 μs) - limits transient energy to safe levels for downstream 100 V-rated components |
| Peak Surge Power (PRSM) | 150 W (10/1000 μs) - supports ISO 7637-2 Pulse 1/2a/2b/5a compliance in automotive electronics |
| Dynamic Resistance (ZZ) | 25 Ω typical at 10 mA - ensures low output impedance for stable reference performance under load variation |
| Operating Temperature | -65 °C to +175 °C - meets under-hood thermal requirements without derating in engine control modules |
| Package | DO-219AB (SMF) - 2.7 × 3.9 mm low-profile SMD footprint compatible with high-density PCB layouts |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability including whisker testing (JESD 201 Class 2) and 8 kV HBM ESD |
Pinout & Package
DO-219AB (SMF) package: 2-terminal surface-mount device with cathode marked by band on top surface; dimensions 2.7 mm × 3.9 mm × 1.08 mm; MSL Level 1, reflow-compatible up to 260 °C peak.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal under forward bias | Connected to lower-potential node (e.g., ground or return path) in Zener shunt configuration |
| Cathode | Current exit terminal under reverse breakdown | Connected to protected line (e.g., 12 V battery rail); band marking identifies this terminal |
Key Features
| Feature | Design Value |
|---|---|
| ±2 % Zener voltage tolerance | Enables accurate voltage referencing without post-production trimming in automotive sensor supply rails |
| 150 W peak surge rating (10/1000 μs) | Withstands load dump transients per ISO 16750-2 without degradation in engine control units |
| AEC-Q101 qualification | Validated for automotive use including temperature cycling, humidity bias, and mechanical shock testing |
| Low leakage current (≤5 μA at 56 V) | Minimizes standby power loss in always-on vehicle subsystems such as CAN gateway controllers |
| DO-219AB package thermal resistance | RthJA = 180 K/W (on 3 mm × 3 mm Cu pad) - supports continuous 800 mW dissipation at 30 °C ambient |
Applications
| Engine Control Unit (ECU) Power Rail Protection | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: Protecting 12 V microcontroller supply against load dump and jump-start surges. IC Role / Device Role / Timing Role: Shunt-clamp transient voltage suppressor placed across input rail before LDO regulator. Use Value: Clamps to 90.9 V at 56 A, limiting stress on downstream 100 V-rated regulators and ensuring ASIL-B functional safety compliance. |
Use Scenario: Stabilizing 5 V reference for LIN bus transceivers and door module sensors. IC Role / Device Role / Timing Role: Precision Zener reference providing stable bias for analog comparators and ADC references. Use Value: ±2 % tolerance and +0.08 %/°C TC enable <10 mV drift over -40 °C to +125 °C ambient, meeting LIN spec accuracy. |
| Advanced Driver Assistance Systems (ADAS) Camera Power | Electric Power Steering (EPS) Motor Driver Protection |
Use Scenario: Suppressing EMI-induced transients on 3.3 V imaging sensor supply in surround-view cameras. IC Role / Device Role / Timing Role: Low-capacitance (<3 pF typical) Zener clamp minimizing signal integrity impact on high-speed MIPI lines. Use Value: 1.6 V clamping voltage at 5 A allows fast response to sub-100 ns spikes without affecting pixel clock timing margins. |
Use Scenario: Guarding gate driver ICs against inductive kickback from 3-phase BLDC motor windings. IC Role / Device Role / Timing Role: Bidirectional transient suppressor (used with complementary diode) across half-bridge outputs. Use Value: 175 °C max junction temperature and 300 W non-repetitive surge rating prevent thermal runaway during motor stall conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ68A-E3/52 (Vishay) | TVS diode, 68 V standoff, 100 W peak power, higher capacitance (~100 pF) | Designed for faster transient suppression but less precise DC regulation | Select when surge speed > regulation accuracy; not suitable for reference applications |
| BZX84-C68LT1G (ON Semiconductor) | SOT-23 package, 68 V, ±5 % tolerance, 300 mW PD, no AEC-Q101 qualification | Limited to low-power consumer-grade applications; insufficient for automotive surge immunity | Acceptable only for non-automotive prototypes where cost outweighs reliability requirements |
Compared with BZD27B68P-HE3_A18, SMBJ68A-E3/52 offers faster response but sacrifices voltage precision and thermal robustness, while BZX84-C68LT1G lacks automotive qualification and surge capability-making BZD27B68P-HE3_A18 the sole choice for AEC-Q101-compliant 68 V Zener regulation with 150 W surge handling.
Availability
BZD27B68P-HE3_A18 is available at Aetrix Electronics and suitable for automotive ECU power protection, body control module voltage referencing, ADAS camera rail stabilization, and electric power steering transient suppression requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for BZD27B68P-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 designs and manufactures discrete semiconductors including diodes, MOSFETs, and optoelectronics, with emphasis on high-reliability, automotive-qualified components.
The BZD27B Series targets automotive voltage regulation and transient suppression, delivering AEC-Q101 qualified Zener diodes optimized for under-hood environments with wide temperature operation and high surge resilience.
FAQ
What is the Zener voltage tolerance of BZD27B68P-HE3_A18?
The BZD27B68P-HE3_A18 has a Zener voltage tolerance of ±2 %, specified as 66.64 V minimum to 69.36 V maximum at 10 mA test current. This tight tolerance ensures predictable clamping behavior in automotive power rail protection circuits and eliminates need for calibration in reference applications. The value is measured per JESD22-A114 and verified during AEC-Q101 qualification.
Does BZD27B68P-HE3_A18 meet AEC-Q101 requirements?
Yes, BZD27B68P-HE3_A18 is fully AEC-Q101 qualified. It passes all required stress tests including temperature cycling, high-temperature operating life, humidity bias, mechanical shock, and whisker testing (JESD201 Class 2). The "-HE3" suffix explicitly denotes AEC-Q101 qualification, distinguishing it from commercial-grade "-E3" variants.
What is the maximum clamping voltage for BZD27B68P-HE3_A18 during surge events?
The BZD27B68P-HE3_A18 clamps to 90.9 V at 56 A under 10/1000 μs waveform conditions. This value is guaranteed per IEC 61000-4-5 and ISO 7637-2 standards. At lower surge currents (e.g., 10 A), clamping drops to ~75 V, enabling scalable protection design across different threat levels in automotive networks.
Can BZD27B68P-HE3_A18 be used in reflow soldering processes?
Yes, BZD27B68P-HE3_A18 is rated for wave and reflow soldering with peak temperature up to 260 °C, compliant with J-STD-020 MSL Level 1. Its DO-219AB (SMF) package uses UL 94 V-0 molding compound and withstands standard lead-free reflow profiles without delamination or parameter shift.
What is the thermal resistance from junction to ambient for BZD27B68P-HE3_A18?
The junction-to-ambient thermal resistance (RthJA) of BZD27B68P-HE3_A18 is 180 K/W when mounted on an epoxy-glass PCB with 3 mm × 3 mm copper pads ≥40 μm thick. This value enables 800 mW continuous power dissipation at 30 °C ambient, supporting sustained operation in thermally constrained automotive modules.
BZD27B68P-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):
- 56V (Max)
- Voltage - Breakdown (Min):
- 66.64V
- Voltage - Clamping (Max) @ Ipp:
- 90.9V
- Current - Peak Pulse (10/1000µs):
- 1.6A
- 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)
BZD27B68P-HE3_A18 FAQ
1.How can I place an order for BZD27B68P-HE3_A18 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZD27B68P-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 BZD27B68P-HE3_A18 reliable?
The price and inventory of BZD27B68P-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 BZD27B68P-HE3_A18 is usually 5 days.
3.What payment methods are accepted for BZD27B68P-HE3_A18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZD27B68P-HE3_A18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZD27B68P-HE3_A18?
BZD27B68P-HE3_A18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZD27B68P-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 BZD27B68P-HE3_A18?
For technical support, including BZD27B68P-HE3_A18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZD27B68P-HE3_A18 requirements.
6.How does Aetrix verify that BZD27B68P-HE3_A18 is sourced from the original manufacturer or authorized distributors?
All BZD27B68P-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 BZD27B68P-HE3_A18 meets industry standards.
7.What is the process for return or replacement of BZD27B68P-HE3_A18?
All BZD27B68P-HE3_A18 units undergo pre-shipment inspection (PSI). If there is an issue with BZD27B68P-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 BZD27B68P-HE3_A18 part is unused and in its original packaging.
Return procedure for BZD27B68P-HE3_A18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZD27B68P-HE3_A18 Tags
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