My Inquiry
My Account
Vishay BZD27B6V8P-HM3_A18
- Part No.:
- BZD27B6V8P-HM3_A18
- Manufacturer:
- Vishay
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
BZD27B6V8P-HM3_A18.pdf
- Description:
- ZENER DIODE SMF DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,781
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BZD27B6V8P-HM3_A18 from Vishay Semiconductors is a surface-mount silicon planar Zener diode rated for 6.8 V nominal breakdown voltage (±2 % tolerance), 100 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-DC converter feedback loops.
For engineers reviewing the BZD27B6V8P-HM3_A18 datasheet, BZD27B6V8P-HM3_A18 pinout, BZD27B6V8P-HM3_A18 application, or BZD27B6V8P-HM3_A18 equivalent, key selection criteria include its AEC-Q101 qualification, ±0.07 %/°C temperature coefficient, 3 Ω dynamic resistance at IZT, 10 μA reverse leakage at 5.44 V, and DO-219AB (SMF) package compatibility with high-density PCB layouts.
Technical Context
This unidirectional Zener diode operates in reverse-bias breakdown mode to regulate or clamp voltage with low dynamic impedance and tight voltage tolerance. Its construction supports stable operation up to TJ = 175 °C and meets JESD201 Class 2 whisker resistance and MSL Level 1 reflow requirements.
The device delivers 150 W surge power handling per IEC 60-1 (10/1000 μs), clamps at 11.8 V under 13.3 A peak reverse current, and exhibits 0.07 %/°C typical temperature coefficient-enabling precision voltage reference and transient suppression without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener voltage VZ | 6.66 V min. / 6.8 V nom. / 6.94 V max. - ensures ±2 % regulation accuracy across production lots and temperature range |
| Test current IZT | 100 mA - defines operating point for specified VZ and dynamic resistance; enables stable biasing in shunt regulator circuits |
| Dynamic resistance ZZ | 3 Ω max. at IZT - minimizes output voltage variation under load transients in feedback or protection applications |
| Reverse leakage IR | 10 μA max. at VR = 5.44 V - guarantees low standby power loss in always-on protection circuits |
| Surge power PRSM | 150 W (10/1000 μs) - sustains automotive load-dump and ISO 7637-2 pulse 5a events without failure |
| Temperature coefficient αVZ | 0 to +0.07 %/°C - provides predictable, monotonic VZ drift over -65 °C to +175 °C operating range |
| Clamping voltage VC | 11.8 V at IRSM = 13.3 A - defines maximum voltage seen by protected circuit during surge conditions |
Pinout & Package
Package: DO-219AB (SMF), low-profile surface-mount case with cathode band marking; compatible with standard SOD-123W footprint and reflow soldering profiles (peak 260 °C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference node for reverse-bias operation | Connected to lower-potential rail (e.g., GND or return path); establishes polarity for Zener conduction |
| Cathode | Input node for voltage clamping/regulation | Connected to protected line or feedback node; conducts when voltage exceeds VZ threshold |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive underhood and powertrain applications requiring reliability beyond commercial grade |
| Low-profile SMF package | 2.7 × 3.5 mm footprint with 0.85 mm height-enables high-density placement near IC power pins |
| MSL Level 1 rating | Unlimited floor life before reflow; no bake required-reduces manufacturing overhead and moisture-related defects |
| ESD robustness | > 8 kV HBM / > 800 V MM-survives handling and board-level ESD events without parameter shift |
| Halogen-free & RoHS-compliant | Meets global environmental compliance mandates without compromising thermal or electrical performance |
Applications
| Automotive Power Rail Protection | Industrial DC-DC Feedback Regulation |
|---|---|
Use Scenario: Protecting microcontroller I/O lines and sensor interfaces from load dump transients in 12 V vehicle systems. IC Role / Device Role / Timing Role: Voltage clamping element placed between supply rail and ground to limit peak voltage to ≤11.8 V during ISO 7637-2 Pulse 5a events. Use Value: Prevents latch-up or permanent damage to downstream logic with guaranteed 150 W surge capability and AEC-Q101 reliability. |
Use Scenario: Stabilizing output voltage in isolated flyback converters via optocoupler feedback loop. IC Role / Device Role / Timing Role: Precision Zener reference providing 6.8 V threshold to drive optocoupler LED, enabling accurate secondary-side regulation. Use Value: Maintains ±2 % output accuracy across temperature due to low TC (0 to +0.07 %/°C) and 3 Ω ZZ. |
| Telecom Line Interface Protection | Programmable Logic Supply Clamp |
Use Scenario: Safeguarding Ethernet PHY transceivers against induced surges on PoE-powered data lines. IC Role / Device Role / Timing Role: Bidirectional transient suppressor (used with back-to-back configuration) limiting common-mode voltage excursions. Use Value: Clamps to 11.8 V within nanoseconds while sustaining 13.3 A peak current-preserving signal integrity and PHY functionality. |
Use Scenario: Preventing FPGA or CPLD core voltage overshoot during hot-swap or power sequencing events. IC Role / Device Role / Timing Role: Fast-acting shunt clamp on 6.8 V auxiliary supply rail to absorb energy from inductive kickback or regulator instability. Use Value: Limits voltage excursion to ≤11.8 V with sub-μs response, avoiding configuration corruption or brown-out resets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ6.8A | TVS diode (not Zener); higher clamping voltage (11.5 V min. at 10.3 A), lower leakage (1 μA), but no precise VZ regulation | Optimized for fast transient suppression only-not suitable for voltage reference or feedback regulation | Select when primary need is surge immunity, not stable DC regulation |
| BZX84-C6V8 | SOT-23 package; 6.8 V ±5 % tolerance, 90 Ω ZZ, 500 mW Ptot-lower surge rating (40 W), no AEC-Q101 qualification | Targeted at consumer-grade low-power circuits; insufficient for automotive or industrial surge stress | Select only for cost-sensitive, non-automotive applications with relaxed reliability and surge requirements |
Compared with SMBJ6.8A and BZX84-C6V8, BZD27B6V8P-HM3_A18 uniquely combines AEC-Q101 qualification, ±2 % VZ tolerance, 150 W surge rating, and low ZZ-making it the sole choice for automotive-grade voltage regulation and clamping where precision and ruggedness are co-required.
Availability
BZD27B6V8P-HM3_A18 is available at Aetrix Electronics and suitable for automotive electronics, industrial power supplies, and telecom infrastructure requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for BZD27B6V8P-HM3_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 demanding industrial and automotive environments.
The BZD27B-M Series targets high-surge, high-stability Zener applications in automotive power systems and industrial controls, emphasizing AEC-Q101 qualification, low-profile packaging, and precise voltage regulation.
FAQ
What is the Zener voltage tolerance for BZD27B6V8P-HM3_A18?
The BZD27B6V8P-HM3_A18 has a nominal Zener voltage of 6.8 V with a tight ±2 % tolerance, specified as 6.66 V minimum and 6.94 V maximum at 100 mA test current. This tolerance is maintained across the full operating temperature range (-65 °C to +175 °C) and is verified per AEC-Q101 stress testing protocols. The BZD27B6V8P-HM3_A18 achieves this stability through silicon planar process control and rigorous lot qualification.
Is BZD27B6V8P-HM3_A18 qualified for automotive applications?
Yes, BZD27B6V8P-HM3_A18 is explicitly AEC-Q101 qualified, as indicated by the "-HM3" suffix per Vishay's ordering nomenclature. It passes all required stress tests-including high-temperature operating life, temperature cycling, and ESD (HBM > 8 kV)-and is rated for underhood use up to 175 °C junction temperature. The BZD27B6V8P-HM3_A18 is intended for automotive power rail protection and feedback regulation where reliability is critical.
What is the maximum clamping voltage of BZD27B6V8P-HM3_A18 during surge events?
The BZD27B6V8P-HM3_A18 clamps to a maximum of 11.8 V at 13.3 A peak reverse current (10/1000 μs waveform), per Vishay's electrical characteristics table. This clamping voltage is measured under standardized IEC 60-1 surge conditions and defines the upper voltage limit imposed on protected circuits during transients. The BZD27B6V8P-HM3_A18 maintains this performance consistently due to its low dynamic resistance (3 Ω max.) and thermally robust DO-219AB package.
Can BZD27B6V8P-HM3_A18 be used in place of a standard 6.8 V Zener for voltage reference?
Yes, BZD27B6V8P-HM3_A18 is suitable for precision voltage reference applications due to its ±2 % VZ tolerance, low 3 Ω dynamic resistance, and 0 to +0.07 %/°C temperature coefficient. Unlike general-purpose Zeners, the BZD27B6V8P-HM3_A18 delivers stable regulation under varying load and temperature-especially valuable in feedback networks for DC-DC converters. Its AEC-Q101 qualification further ensures long-term parametric stability in mission-critical designs.
What is the recommended PCB footprint for BZD27B6V8P-HM3_A18?
The BZD27B6V8P-HM3_A18 uses the DO-219AB (SMF) package, with recommended footprint dimensions of 1.3 mm × 1.3 mm pad width and 2.9 mm center-to-center spacing, per Vishay's package drawing S8-V-3915.01-001. The device requires 3 mm × 3 mm copper pads (≥40 μm thick) for optimal thermal dissipation. This footprint is compatible with SOD-123W land patterns but offers superior surge capability versus legacy packages. Always verify layout against the latest BZD27B6V8P-HM3_A18 mechanical drawing.
BZD27B6V8P-HM3_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):
- 3V (Max)
- Voltage - Breakdown (Min):
- 6.66V
- Voltage - Clamping (Max) @ Ipp:
- -
- Current - Peak Pulse (10/1000µs):
- -
- 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)
BZD27B6V8P-HM3_A18 FAQ
1.How can I place an order for BZD27B6V8P-HM3_A18 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZD27B6V8P-HM3_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 BZD27B6V8P-HM3_A18 reliable?
The price and inventory of BZD27B6V8P-HM3_A18 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZD27B6V8P-HM3_A18 is usually 5 days.
3.What payment methods are accepted for BZD27B6V8P-HM3_A18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZD27B6V8P-HM3_A18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZD27B6V8P-HM3_A18?
BZD27B6V8P-HM3_A18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZD27B6V8P-HM3_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 BZD27B6V8P-HM3_A18?
For technical support, including BZD27B6V8P-HM3_A18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZD27B6V8P-HM3_A18 requirements.
6.How does Aetrix verify that BZD27B6V8P-HM3_A18 is sourced from the original manufacturer or authorized distributors?
All BZD27B6V8P-HM3_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 BZD27B6V8P-HM3_A18 meets industry standards.
7.What is the process for return or replacement of BZD27B6V8P-HM3_A18?
All BZD27B6V8P-HM3_A18 units undergo pre-shipment inspection (PSI). If there is an issue with BZD27B6V8P-HM3_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 BZD27B6V8P-HM3_A18 part is unused and in its original packaging.
Return procedure for BZD27B6V8P-HM3_A18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZD27B6V8P-HM3_A18 Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
