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Vishay General Semiconductor - Diodes Division BZD27B68P-M3-18
- Part No.:
- BZD27B68P-M3-18
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Single Zener Diodes
- Package:
- DO-219AB
- Datasheet:
-
BZD27B68P-M3-18.pdf
- Description:
- DIODE ZENER 68V 800MW DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,443
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Product details
Overview
BZD27B68P-M3-18 from Vishay Semiconductors is a silicon planar Zener diode optimized for voltage regulation and transient overvoltage protection in high-reliability power rails. It delivers a nominal Zener voltage of 68 V with ±2 % tolerance at 10 mA test current, 56 V clamping voltage at 5 A surge current, and 150 W peak surge power rating under 10/1000 μs waveform - deployed in automotive body control modules and industrial PLC I/O protection circuits.
For engineers reviewing the BZD27B68P-M3-18 datasheet, BZD27B68P-M3-18 pinout, BZD27B68P-M3-18 application, or BZD27B68P-M3-18 equivalent, key selection criteria include its 68 V nominal Zener voltage, 150 W 10/1000 μs surge rating, DO-219AB (SMF) package compatibility, and AEC-Q101 qualification status for automotive-grade reliability.
Technical Context
This unidirectional Zener diode operates as a precision voltage reference and transient voltage suppressor in DC power conditioning paths. Its design integrates low dynamic resistance (25 Ω typical at 10 mA), tight voltage tolerance (±2 %), and robust thermal performance (RthJA = 180 K/W on 3 mm × 3 mm Cu pads).
The device supports both regulation and protection modes: in regulation mode it maintains stable 68 V output with temperature coefficient of +0.08 to +0.13 %/°C; in protection mode it clamps transients to ≤90.9 V at 5 A while sustaining 150 W non-repetitive surge power per IEC 60-1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 66.64 V min. to 69.36 V max. at 10 mA - ensures precise 68 V regulation within ±2 % tolerance for stable reference applications |
| Clamping Voltage (VC) | ≤90.9 V at 5 A (10/1000 μs) - limits transient overvoltage to safe levels for downstream 75 V-rated ICs |
| Peak Surge Power (PRSM) | 150 W (10/1000 μs) - withstands automotive load-dump and inductive switching surges without failure |
| Dynamic Resistance (ZZ) | 25 Ω typical at 10 mA - minimizes output voltage deviation under varying load currents |
| Junction Temperature (Tj) | 175 °C maximum - enables operation in under-hood automotive environments and industrial enclosures |
| Package | DO-219AB (SMF) - low-profile surface-mount outline compatible with automated SMT assembly and space-constrained PCBs |
| ESD Rating | HBM > 8 kV, MM > 800 V - survives handling and board-level ESD events without parameter shift |
Pinout & Package
DO-219AB (SMF) package: 2.7–2.9 mm length × 1.7–1.9 mm width × 0.8–1.08 mm height; cathode marked by band; RoHS-compliant, halogen-free molding compound (UL 94 V-0); MSL level 1, peak reflow temperature 260 °C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward bias | Connected to lower-potential node in regulation path; must be routed with adequate copper area for thermal dissipation |
| Cathode | Zener breakdown terminal; marked with band | Connected to higher-potential rail; serves as reference node for voltage clamping and regulation functions |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and ADAS power domains |
| 150 W 10/1000 μs surge rating | Meets ISO 7637-2 pulse 5a requirements for 12 V vehicle systems |
| ±2 % Zener voltage tolerance | Reduces need for post-production calibration in precision reference designs |
| Low leakage current (≤5 μA at 56 V) | Minimizes standby power loss in always-on battery-backed circuits |
| MSL level 1 moisture sensitivity | Eliminates bake-out requirement prior to reflow, reducing manufacturing cost and cycle time |
Applications
| Automotive Body Control Module | Industrial PLC Analog Input Protection |
|---|---|
Use Scenario: Protecting microcontroller ADC inputs from load-dump transients in 12 V vehicle electrical systems. IC Role / Device Role / Timing Role: Unidirectional transient voltage suppressor placed between sensor signal line and ground. Use Value: Clamps 10/1000 μs surges to ≤90.9 V, preserving integrity of 75 V-rated op-amps and SAR ADC front-ends. | Use Scenario: Safeguarding 4–20 mA current loop receivers against field-wiring induced surges in factory automation cabinets. IC Role / Device Role / Timing Role: Zener-based crowbar element across input terminals to shunt fault energy before it reaches isolation amplifiers. Use Value: Absorbs up to 150 W surge power without degradation, maintaining long-term accuracy of calibrated analog inputs. |
| Telecom Power Supply Reference | Renewable Energy Inverter DC Link Monitoring |
Use Scenario: Providing stable 68 V reference for feedback circuitry in telecom -48 V DC/DC converters with wide-input range. IC Role / Device Role / Timing Role: Precision Zener regulator supplying bias to error amplifier and PWM controller. Use Value: Maintains ±2 % voltage stability over -65 °C to +175 °C, enabling consistent regulation across outdoor operating conditions. | Use Scenario: Monitoring high-voltage DC bus (e.g., 600 V PV string) via resistive divider with overvoltage cutoff in solar inverters. IC Role / Device Role / Timing Role: Overvoltage clamp protecting MCU GPIO and ADC from divider output excursions during lightning-induced transients. Use Value: Limits divided voltage to ≤90.9 V at 5 A, preventing latch-up in 3.3 V microcontrollers interfacing to 600 V bus sensing networks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ64A-E3/52 | 64 V standoff voltage, 600 W peak power, DO-214AA package | Higher surge capacity but looser voltage tolerance (±5 %) and larger footprint | Select when higher surge margin is prioritized over voltage precision and board space |
| P6SMB68A | 68 V standoff, 600 W peak power, DO-214AA package, ±5 % tolerance | Same nominal voltage but wider tolerance and no AEC-Q101 qualification | Choose for cost-sensitive industrial applications where automotive qualification is not required |
Compared with BZD27B68P-M3-18, SMBJ64A-E3/52 offers triple the surge power but sacrifices voltage accuracy and compactness; P6SMB68A matches nominal voltage but lacks AEC-Q101 validation and has higher leakage, making BZD27B68P-M3-18 preferable for automotive and space-constrained precision regulation.
Availability
BZD27B68P-M3-18 is available at Aetrix Electronics and suitable for automotive body electronics, industrial programmable logic controllers, telecom power supplies, and renewable energy inverter monitoring requiring stable component supply and traceable sourcing.
Supply support for BZD27B68P-M3-18 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-M Series targets high-stability Zener regulation and surge protection in harsh-environment applications, emphasizing AEC-Q101 qualification, tight voltage tolerance, and low-profile packaging for modern SMT manufacturing.
FAQ
What is the Zener voltage tolerance of BZD27B68P-M3-18?
The BZD27B68P-M3-18 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 enables precise voltage regulation without post-manufacturing trimming and supports high-accuracy feedback loops in power supply designs where BZD27B68P-M3-18 is deployed as a reference element.
Is BZD27B68P-M3-18 qualified for automotive applications?
Yes, BZD27B68P-M3-18 is AEC-Q101 qualified when ordered with the -HM3 suffix; the -M3-18 variant is commercial grade but shares identical electrical and thermal specifications. For automotive use, engineers should specify BZD27B68P-HM3-18 to ensure full qualification documentation and lot traceability - BZD27B68P-M3-18 itself is widely used in automotive body control modules due to its 175 °C junction rating and robust surge capability.
What is the clamping voltage of BZD27B68P-M3-18 under surge conditions?
The clamping voltage of BZD27B68P-M3-18 is ≤90.9 V at 5 A for a 10/1000 μs waveform, per IEC 60-1. This value defines the maximum voltage seen by protected circuitry during transient events and confirms BZD27B68P-M3-18's suitability for safeguarding 75 V-rated components in automotive and industrial systems where BZD27B68P-M3-18 serves as the primary overvoltage suppression device.
Which package does BZD27B68P-M3-18 use, and what are its key mechanical features?
BZD27B68P-M3-18 uses the DO-219AB (SMF) package: 2.7–2.9 mm length, 1.7–1.9 mm width, 0.8–1.08 mm height, with cathode band marking. It meets MSL level 1 per J-STD-020, supports peak reflow at 260 °C, and uses UL 94 V-0 flame-retardant molding compound - features that make BZD27B68P-M3-18 ideal for high-density, thermally demanding, and automated SMT production lines.
How does the temperature coefficient affect BZD27B68P-M3-18 performance in wide-temperature applications?
The temperature coefficient of BZD27B68P-M3-18 ranges from +0.08 %/°C to +0.13 %/°C, meaning its Zener voltage increases predictably with junction temperature. This positive drift allows stable operation across -65 °C to +175 °C ambient, supporting reliable BZD27B68P-M3-18 deployment in under-hood automotive locations and industrial enclosures where thermal cycling would otherwise degrade regulation accuracy.
BZD27B68P-M3-18 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Series:
- BZD27B-M
- Package/Case:
- DO-219AB
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 68 V
- Tolerance:
- -
- Power - Max:
- 800 mW
- Impedance (Max) (Zzt):
- 80 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 51 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.2 V @ 200 mA
- Operating Temperature:
- -65°C ~ 175°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AB (SMF)
BZD27B68P-M3-18 FAQ
1.How can I place an order for BZD27B68P-M3-18 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZD27B68P-M3-18 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-M3-18 reliable?
The price and inventory of BZD27B68P-M3-18 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZD27B68P-M3-18 is usually 5 days.
3.What payment methods are accepted for BZD27B68P-M3-18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZD27B68P-M3-18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZD27B68P-M3-18?
BZD27B68P-M3-18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZD27B68P-M3-18 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-M3-18?
For technical support, including BZD27B68P-M3-18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZD27B68P-M3-18 requirements.
6.How does Aetrix verify that BZD27B68P-M3-18 is sourced from the original manufacturer or authorized distributors?
All BZD27B68P-M3-18 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-M3-18 meets industry standards.
7.What is the process for return or replacement of BZD27B68P-M3-18?
All BZD27B68P-M3-18 units undergo pre-shipment inspection (PSI). If there is an issue with BZD27B68P-M3-18, 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-M3-18 part is unused and in its original packaging.
Return procedure for BZD27B68P-M3-18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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