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Vishay BZD27B68P-HE3_A08
- Part No.:
- BZD27B68P-HE3_A08
- Manufacturer:
- Vishay
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
BZD27B68P-HE3_A08.pdf
- Description:
- ZENER DIODE SMF DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,032
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Product details
Overview
BZD27B68P-HE3_A08 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, 56 V clamping voltage at 5 A surge, and 150 W peak surge power rating (10/1000 μs). It serves as a precision voltage reference and transient overvoltage protector in automotive power rail conditioning circuits.
For engineers reviewing the BZD27B68P-HE3_A08 datasheet, BZD27B68P-HE3_A08 pinout, BZD27B68P-HE3_A08 application, or BZD27B68P-HE3_A08 equivalent, key selection criteria include its 68 V Zener voltage tolerance, 150 W surge rating, DO-219AB (SMF) package compatibility, and AEC-Q101 qualification for under-hood automotive use.
Technical Context
This unidirectional Zener diode operates in reverse-bias breakdown mode to regulate or clamp voltage. Its 68 V nominal Zener voltage is specified at 10 mA test current with dynamic resistance of 25 Ω and temperature coefficient of +0.08 to +0.13 %/°C. It delivers 150 W non-repetitive peak surge power under 10/1000 μs waveform conditions.
The device uses silicon planar construction, features low leakage current (≤5 μA at VR = 56 V), and achieves excellent long-term stability. It is packaged in the low-profile SMF (DO-219AB) case, rated MSL level 1, and qualified to JESD201 Class 2 whisker test and AEC-Q101 for automotive reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 66.64 V min. / 68 V nom. / 69.36 V max. - precise regulation point with ±2 % tolerance at 10 mA |
| Test Current (IZT) | 10 mA - standardized bias condition for VZ measurement and stability validation |
| Clamping Voltage (VC) | 90.9 V at IRSM = 5 A - defines maximum voltage seen during 10/1000 μs transient events |
| Peak Surge Power (PRSM) | 150 W - enables robust protection against ISO 7637-2 pulse 1/2a/2b/5a transients in 12 V systems |
| Dynamic Resistance (ZZ) | 25 Ω - ensures tight voltage regulation under varying load or current conditions |
| Temperature Coefficient (αVZ) | +0.08 to +0.13 %/°C - supports stable operation across -65 °C to +175 °C junction range |
| Package | DO-219AB (SMF) - 2.7 × 3.5 mm footprint, MSL level 1, compatible with reflow soldering |
Pinout & Package
DO-219AB (SMF) surface-mount package: 2.7 mm × 3.5 mm body, 0.85 mm height, cathode marked by band on top surface. Designed for high thermal efficiency with RthJA = 180 K/W on 3 mm × 3 mm Cu pads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / low-side connection | Connected to ground or lower potential node in shunt regulator or clamp configuration |
| Cathode | Zener breakdown terminal / high-side connection | Connected to protected line; conducts when reverse voltage exceeds 68 V, diverting surge current to ground |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive under-hood applications including engine control units and body electronics |
| 150 W peak surge rating (10/1000 μs) | Meets ISO 7637-2 Pulse 5a requirements for load dump suppression in 12 V systems |
| ±2 % Zener voltage tolerance | Enables accurate voltage reference design without post-production trimming |
| Low dynamic resistance (25 Ω) | Minimizes output voltage deviation under transient current changes in regulation circuits |
| MSL level 1, 260 °C peak reflow | Supports standard lead-free assembly without baking or special handling |
Applications
| Automotive Load Dump Protection | Industrial Power Rail Clamping |
|---|---|
Use Scenario: Suppresses 12 V system load dump transients (ISO 7637-2 Pulse 5a) in engine control modules and infotainment head units. IC Role / Device Role / Timing Role: Shunt-clamp device placed between battery rail and ground, conducting only during overvoltage events ≥68 V. Use Value: Limits peak rail voltage to ≤90.9 V at 5 A, preventing damage to downstream 75 V-rated DC-DC converters and microcontrollers. | Use Scenario: Protects programmable logic controller (PLC) analog input modules from field-wiring induced surges. IC Role / Device Role / Timing Role: Standby overvoltage clamp on 24 V supply line, activated only during fault conditions exceeding 68 V. Use Value: Provides 150 W surge dissipation capability without derating at +85 °C ambient, ensuring reliability in industrial enclosures. |
| Automotive CAN Transceiver Protection | High-Voltage Reference Stabilization |
Use Scenario: Shields high-speed CAN FD transceivers (e.g., TJA1044) from coupled transients on VCC supply lines. IC Role / Device Role / Timing Role: Low-leakage (≤5 μA) Zener reference connected between VCC and ground, clamping fast-rising edges. Use Value: Maintains <1.6 V overshoot margin below 70 V absolute maximum rating of transceiver VCC pins during ESD and burst events. | Use Scenario: Supplies stable 68 V reference for high-side current sensing in 48 V mild-hybrid battery management systems. IC Role / Device Role / Timing Role: Precision Zener element in feedback divider network of isolated flyback controller (e.g., UCC28780). Use Value: Delivers ±2 % voltage accuracy and +0.08 %/°C TC over -40 °C to +125 °C, enabling <0.5 % total current-sense error. |
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 | TVS diode (not Zener); higher clamping ratio (113 V @ 5.2 A), lower leakage (<1 μA), same DO-214AA package | Designed for transient suppression only; lacks precision Zener regulation capability | Select when primary need is surge clamping, not voltage reference stability |
| BZT52C68-7-F | SOD-123 package; ±5 % tolerance; 410 mW PD; no AEC-Q101 or surge rating spec | Lower power, commercial-grade; unsuitable for automotive or high-energy transient environments | Select only for cost-sensitive, non-automotive, low-power reference applications |
Compared with SMBJ68A-E3/52 and BZT52C68-7-F, BZD27B68P-HE3_A08 uniquely combines AEC-Q101 qualification, ±2 % Zener tolerance, and 150 W surge rating in a thermally efficient DO-219AB package-making it the only option suitable for automotive-grade voltage reference and coordinated transient protection.
Availability
BZD27B68P-HE3_A08 is available at Aetrix Electronics and suitable for automotive power management, industrial PLC protection, and high-reliability voltage reference designs requiring stable component supply and full traceability.
Supply support for BZD27B68P-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 high-energy transient protection and precision voltage regulation in harsh-environment applications, with emphasis on AEC-Q101 compliance and surge robustness for next-generation vehicle electronics.
FAQ
What is the Zener voltage tolerance specification for BZD27B68P-HE3_A08?
The BZD27B68P-HE3_A08 has a Zener voltage tolerance of ±2 %, with a nominal value of 68 V and a specified range of 66.64 V (min) to 69.36 V (max) at 10 mA test current. This tight tolerance is confirmed in the Electrical Characteristics table on page 2 of Vishay document 85921 Rev. 2.1 and applies specifically to the BZD27B68P variant within the BZD27B Series.
Is BZD27B68P-HE3_A08 qualified for automotive applications?
Yes, BZD27B68P-HE3_A08 is AEC-Q101 qualified, as indicated by the "-HE3" suffix per Vishay's ordering information. It meets JESD201 Class 2 whisker testing, MSL level 1, and is rated for operating temperatures from -65 °C to +175 °C-making it suitable for under-hood automotive use including engine control, body electronics, and ADAS power supplies.
What is the clamping voltage of BZD27B68P-HE3_A08 under surge conditions?
The clamping voltage (VC) of BZD27B68P-HE3_A08 is 90.9 V at IRSM = 5 A for a 10/1000 μs waveform, as specified in the second Electrical Characteristics table on page 3 of Vishay document 85921. This value defines the maximum voltage imposed on protected circuitry during standardized surge events.
Which package does BZD27B68P-HE3_A08 use, and what are its key mechanical features?
BZD27B68P-HE3_A08 uses the DO-219AB (SMF) package: 2.7 mm × 3.5 mm body size, 0.85 mm height, cathode identified by a band. Per page 5 of Vishay document 85921, it supports reflow soldering up to 260 °C peak and is rated MSL level 1-enabling direct placement into standard SMT lines without moisture preconditioning.
Does BZD27B68P-HE3_A08 have a specified surge current rating?
Yes, BZD27B68P-HE3_A08 has a non-repetitive peak surge power rating of 150 W for 10/1000 μs waveform and 300 W for 100 μs square pulse, per Absolute Maximum Ratings table on page 2 of Vishay document 85921. While peak surge current is not directly listed, it can be derived as ~5 A from VC = 90.9 V and P = 150 W (I = P/V ≈ 1.65 A average; peak current aligns with IEC 60-1 10/1000 μs definition).
BZD27B68P-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):
- 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_A08 FAQ
1.How can I place an order for BZD27B68P-HE3_A08 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZD27B68P-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 BZD27B68P-HE3_A08 reliable?
The price and inventory of BZD27B68P-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 BZD27B68P-HE3_A08 is usually 5 days.
3.What payment methods are accepted for BZD27B68P-HE3_A08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZD27B68P-HE3_A08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZD27B68P-HE3_A08?
BZD27B68P-HE3_A08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZD27B68P-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 BZD27B68P-HE3_A08?
For technical support, including BZD27B68P-HE3_A08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZD27B68P-HE3_A08 requirements.
6.How does Aetrix verify that BZD27B68P-HE3_A08 is sourced from the original manufacturer or authorized distributors?
All BZD27B68P-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 BZD27B68P-HE3_A08 meets industry standards.
7.What is the process for return or replacement of BZD27B68P-HE3_A08?
All BZD27B68P-HE3_A08 units undergo pre-shipment inspection (PSI). If there is an issue with BZD27B68P-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 BZD27B68P-HE3_A08 part is unused and in its original packaging.
Return procedure for BZD27B68P-HE3_A08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZD27B68P-HE3_A08 Tags
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