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Vishay BZD27B27P-HE3_A08
- Part No.:
- BZD27B27P-HE3_A08
- Manufacturer:
- Vishay
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
BZD27B27P-HE3_A08.pdf
- Description:
- ZENER DIODE SMF DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,355
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Product details
Overview
BZD27B27P-HE3_A08 from Vishay Semiconductors is a surface-mount silicon planar Zener diode rated for 27 V nominal Zener voltage (26.46–27.54 V), 25 mA test current, and 150 W peak surge power (10/1000 μs). It features ±2 % voltage tolerance, low dynamic resistance (20 Ω max), and AEC-Q101 qualification for automotive use in overvoltage protection circuits.
For engineers reviewing the BZD27B27P-HE3_A08 datasheet, BZD27B27P-HE3_A08 pinout, BZD27B27P-HE3_A08 application, or BZD27B27P-HE3_A08 equivalent, key selection criteria include clamping voltage (36.3 V at 22 A), temperature coefficient (+0.06 to +0.11 %/°C), surge robustness (150 W PRSM), and SOD-123W-compatible SMF (DO-219AB) package with MSL level 1 handling.
Technical Context
This unidirectional Zener diode operates as a precision voltage reference and transient voltage suppressor in DC bias and protection circuits. Its design supports stable regulation under 25 mA test current and delivers 36.3 V clamping voltage at 22 A peak reverse current per IEC 60-1 (10/1000 μs).
The device uses a planar silicon junction optimized for low leakage (<5 μA at VR = 22 V), excellent long-term stability, and high junction temperature capability (TJ max = 175 °C), enabling reliable operation in automotive engine control units and industrial power supplies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener voltage (VZ) | 26.46–27.54 V at 25 mA - tight ±2 % tolerance enables accurate voltage reference in feedback loops |
| Clamping voltage (VC) | 36.3 V at 22 A - defines maximum voltage seen by protected circuit during surge events |
| Peak surge power (PRSM) | 150 W (10/1000 μs) - sustains high-energy transients without failure per IEC 60-1 |
| Dynamic resistance (ZZ) | 20 Ω max at 25 mA - ensures minimal voltage shift under varying load current |
| Temperature coefficient (αVZ) | +0.06 to +0.11 %/°C - positive drift allows predictable compensation in thermal-aware designs |
| Junction temperature (TJ) | 175 °C max - supports under-hood automotive placement and high-ambient industrial environments |
| Package | SMF (DO-219AB) - low-profile 2.7 × 3.9 mm SMD footprint compatible with SOD-123W layout |
Pinout & Package
SMF (DO-219AB) package: 2-terminal surface-mount device with cathode band marking; dimensions 2.7 mm × 3.9 mm × 1.2 mm; MSL level 1, reflow-compatible up to 260 °C peak.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to lower-potential node in Zener mode | Provides path for forward conduction (VF ≤ 1.2 V @ 0.2 A); tied to ground or return in clamp configurations |
| Cathode | Current exit terminal in forward bias; connected to higher-potential node in Zener mode | Connected to protected line (e.g., 24 V rail); carries full surge current during clamping |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including powertrain and body electronics per stress test requirements |
| Low-profile SMF package | Enables high-density PCB layouts with 2.7 mm width and 1.2 mm height - ideal for space-constrained modules |
| ESD robustness | HBM > 8 kV / MM > 800 V - withstands handling and system-level ESD events without parameter shift |
| MSL level 1 rating | Zero floor life limitation - can be stored indefinitely before reflow without baking |
| Whisker-resistant construction | JESD 201 class 2 compliant - eliminates tin whisker growth risk in long-life deployments |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Protecting 24 V CAN bus power lines against load dump and ISO 7637-2 pulses in engine control modules. IC Role / Device Role / Timing Role: Unidirectional transient voltage suppressor placed between battery rail and downstream regulator IC. Use Value: Clamps surges to ≤36.3 V within 10/1000 μs, preserving 3.3 V/5 V logic supply integrity and meeting AEC-Q100 stress limits. | Use Scenario: Stabilizing reference voltage for 4–20 mA current-loop transmitters in process automation systems. IC Role / Device Role / Timing Role: Precision Zener shunt regulator providing 27 V bias to op-amp and DAC circuitry. Use Value: ±2 % VZ tolerance and +0.06 %/°C TC ensure <±0.5 % output drift across –40 to +125 °C operating range. |
| DC-DC Converter Feedback Network | Programmable Logic Controller (PLC) Input Protection |
Use Scenario: Setting regulated output voltage in isolated flyback converters used in telecom power supplies. IC Role / Device Role / Timing Role: Secondary-side Zener reference in optocoupler feedback path. Use Value: Low dynamic resistance (20 Ω) minimizes regulation error under variable load, improving cross-regulation accuracy. | Use Scenario: Safeguarding 24 V digital input channels on PLC backplanes against field-wiring transients. IC Role / Device Role / Timing Role: Primary-stage surge limiter ahead of TVS diode array and input buffer IC. Use Value: 150 W PRSM rating absorbs repetitive switching surges while maintaining <5 μA leakage at 22 V working voltage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ27A-E3/52 | TVS diode (unidirectional), 27 V standoff, 400 W peak power, higher clamping (42.1 V) | Designed for fast-rising ESD/lightning; less precise regulation than Zener | Select when surge energy exceeds 150 W or sub-nanosecond rise times dominate |
| BZX84-C27LT1G | SOT-23 Zener, 27 V, ±5 % tolerance, 300 mW PD, no surge rating | General-purpose regulation only; not qualified for automotive or surge suppression | Select only for low-power biasing where AEC-Q101 and PRSM are unnecessary |
Compared with SMBJ27A-E3/52 and BZX84-C27LT1G, the BZD27B27P-HE3_A08 uniquely combines AEC-Q101 qualification, ±2 % VZ tolerance, and 150 W IEC-compliant surge capability in a low-profile SMF package - making it optimal for automotive and industrial 24 V system protection where precision and ruggedness coexist.
Availability
BZD27B27P-HE3_A08 is available at Aetrix Electronics and suitable for automotive power management, industrial sensor interfaces, and programmable logic controller input protection requiring stable component supply and long-term lifecycle continuity.
Supply support for BZD27B27P-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 belongs to Vishay's eSMP® Zener platform, engineered specifically for AEC-Q101-compliant transient suppression and precision voltage reference in harsh-environment 12 V/24 V systems.
FAQ
What is the Zener voltage tolerance of BZD27B27P-HE3_A08?
The BZD27B27P-HE3_A08 has a nominal Zener voltage of 27 V with a guaranteed range of 26.46 V to 27.54 V at 25 mA test current, corresponding to ±2 % tolerance per the BZD27B Series specification. This tight tolerance is confirmed in Table 1 of Vishay document 85921 Rev. 2.1 and applies specifically to the BZD27B27P variant with HE3_A08 suffix indicating AEC-Q101 qualification and tape-and-reel packaging.
Does BZD27B27P-HE3_A08 meet automotive reliability standards?
Yes, BZD27B27P-HE3_A08 is AEC-Q101 qualified, as indicated by the "-HE3" suffix per Vishay's ordering information. It passes JESD201 Class 2 whisker testing, MSL level 1 per J-STD-020, and ESD ratings >8 kV HBM / >800 V MM. These qualifications are explicitly documented for the HE3-grade BZD27B Series in the December 2022 datasheet revision.
What is the clamping voltage of BZD27B27P-HE3_A08 under surge conditions?
The clamping voltage (VC) of BZD27B27P-HE3_A08 is 36.3 V at 22 A peak reverse current (IRSM), measured using the 10/1000 μs waveform per IEC 60-1. This value is specified in the second electrical characteristics table (page 3) of the BZD27B datasheet and defines the maximum voltage imposed on protected circuitry during standardized surge events.
Which package does BZD27B27P-HE3_A08 use, and is it compatible with standard footprints?
BZD27B27P-HE3_A08 uses the SMF (DO-219AB) package - a low-profile surface-mount case measuring 2.7 mm × 3.9 mm × 1.2 mm. Vishay confirms compatibility with SOD-123W, SOD-123F, and SOD-123FL land patterns. The footprint recommendation (1.3 mm × 1.3 mm pad, 2.9 mm center-to-center) is provided in Figure 5 of the datasheet.
Can BZD27B27P-HE3_A08 be used in both regulation and surge protection roles?
Yes, BZD27B27P-HE3_A08 is characterized for dual use: as a precision shunt regulator (with 25 mA IZT, 20 Ω ZZ, ±2 % VZ) and as a transient voltage suppressor (150 W PRSM, 36.3 V VC). The datasheet provides separate electrical tables for regulation (page 2) and protection (page 3), confirming validated performance in both modes for the exact BZD27B27P-HE3_A08 part number.
BZD27B27P-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):
- 22V (Max)
- Voltage - Breakdown (Min):
- 26.46V
- Voltage - Clamping (Max) @ Ipp:
- 36.3V
- Current - Peak Pulse (10/1000µs):
- 3.9A
- 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)
BZD27B27P-HE3_A08 FAQ
1.How can I place an order for BZD27B27P-HE3_A08 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZD27B27P-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 BZD27B27P-HE3_A08 reliable?
The price and inventory of BZD27B27P-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 BZD27B27P-HE3_A08 is usually 5 days.
3.What payment methods are accepted for BZD27B27P-HE3_A08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZD27B27P-HE3_A08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZD27B27P-HE3_A08?
BZD27B27P-HE3_A08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZD27B27P-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 BZD27B27P-HE3_A08?
For technical support, including BZD27B27P-HE3_A08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZD27B27P-HE3_A08 requirements.
6.How does Aetrix verify that BZD27B27P-HE3_A08 is sourced from the original manufacturer or authorized distributors?
All BZD27B27P-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 BZD27B27P-HE3_A08 meets industry standards.
7.What is the process for return or replacement of BZD27B27P-HE3_A08?
All BZD27B27P-HE3_A08 units undergo pre-shipment inspection (PSI). If there is an issue with BZD27B27P-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 BZD27B27P-HE3_A08 part is unused and in its original packaging.
Return procedure for BZD27B27P-HE3_A08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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