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Vishay BZD27B24P-HE3_A08
- Part No.:
- BZD27B24P-HE3_A08
- Manufacturer:
- Vishay
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
BZD27B24P-HE3_A08.pdf
- Description:
- ZENER DIODE SMF DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,481
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Product details
Overview
BZD27B24P-HE3_A08 from Vishay Semiconductors is a surface-mount silicon planar Zener diode rated for 24 V nominal Zener voltage (23.52–24.48 V), 25 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 supply monitoring circuits.
For engineers reviewing the BZD27B24P-HE3_A08 datasheet, BZD27B24P-HE3_A08 pinout, BZD27B24P-HE3_A08 application, or BZD27B24P-HE3_A08 equivalent, key selection criteria include its AEC-Q101 qualification, ±2 % VZ tolerance, low dynamic resistance (18 Ω), temperature coefficient (+0.06 to +0.11 %/°C), and DO-219AB (SMF) package compatibility with high-density PCB layouts.
Technical Context
This unidirectional Zener diode operates as a precision voltage reference and transient voltage suppressor. It delivers stable regulation at 24 V with 18 Ω dynamic resistance at 25 mA and clamps transients up to 32.3 V at 5 A (10/1000 μs), meeting IEC 60-1 surge standards.
Its thermal design supports operation from –65 °C to +175 °C junction temperature, with RthJA = 180 K/W on 3 mm × 3 mm Cu pads and RthJL = 30 K/W, enabling reliable performance in under-hood automotive environments and industrial control modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 23.52–24.48 V at 25 mA - tight ±2 % tolerance ensures accurate 24 V rail clamping without calibration |
| Clamping Voltage (VC) | 32.3 V at 5 A (10/1000 μs) - limits surge-induced stress on downstream 3.3 V/5 V logic |
| Peak Surge Power (PRSM) | 150 W - withstands ISO 7637-2 Pulse 1/2a/5a load-dump and jump-start events |
| Dynamic Resistance (ZZ) | 18 Ω - minimizes output voltage deviation under varying load currents |
| Temperature Coefficient (αVZ) | +0.06 to +0.11 %/°C - predictable positive drift simplifies thermal compensation in wide-temp designs |
| Junction Temperature (Tj) | 175 °C max - supports under-hood placement without derating in engine control units |
| ESD Rating | HBM > 8 kV, MM > 800 V - protects against handling and board-level ESD during assembly and field service |
Pinout & Package
Package: DO-219AB (SMF), low-profile surface-mount case with cathode band marking; compatible with SOD-123W footprint and reflow soldering (peak 260 °C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current sink during reverse breakdown | Connected to system ground or lower-potential node to enable clamping action |
| Cathode | High-impedance voltage reference node | Connected to protected line (e.g., 24 V supply rail); defines regulated Zener voltage |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, body electronics, and ADAS power domains |
| MSL Level 1 | Unlimited floor life before reflow; no baking required prior to assembly |
| JESD 201 Class 2 whisker resistance | Ensures long-term reliability in high-vibration, high-humidity environments |
| Wave and reflow solderable | Compatible with standard SMT lines using SnPb or lead-free profiles (peak ≤260 °C) |
| Low leakage current | ≤5 μA at 20 V - prevents parasitic drain in always-on battery-connected systems |
Applications
| Automotive Load-Dump Protection | Industrial 24 V PLC Input Protection |
|---|---|
Use Scenario: Suppresses ISO 7637-2 Pulse 5a (load dump) transients on 24 V vehicle battery lines. IC Role / Device Role / Timing Role: Unidirectional Zener clamp absorbing up to 150 W surge energy within microseconds. Use Value: Prevents damage to CAN transceivers and microcontrollers by limiting rail voltage to ≤32.3 V during 120 V/400 ms events. | Use Scenario: Guards digital input channels of programmable logic controllers against field-wiring surges. IC Role / Device Role / Timing Role: Standoff protector holding 24 V logic threshold while shunting fast transients. Use Value: Enables robust operation in factory-floor environments with frequent inductive switching noise (e.g., solenoid actuation). |
| DC-DC Converter Feedback Reference | Telecom Power Supply Overvoltage Clamp |
Use Scenario: Provides stable 24 V reference for secondary-side feedback in isolated flyback converters. IC Role / Device Role / Timing Role: Precision Zener element setting output voltage via optocoupler bias network. Use Value: Maintains ±2 % output regulation across –40 to +125 °C due to low tempco and tight VZ tolerance. | Use Scenario: Clamps 24 V telecom distribution bus against lightning-induced surges. IC Role / Device Role / Timing Role: Primary-stage transient voltage suppressor in -48 V to +24 V conversion subsystems. Use Value: Limits voltage excursion to 32.3 V at 5 A, protecting downstream DC-DC modules and FPGAs without adding TVS array complexity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ24A | TVS diode with 24 V standoff, 38.9 V clamping at 11.3 A, higher capacitance (150 pF) | Designed for faster transient suppression (sub-nanosecond response); less precise DC regulation | Select when surge speed dominates over DC accuracy; not suitable for feedback references |
| BZX84-C24 | SOT-23 Zener, 24 V ±5 %, 300 mW PD, no AEC-Q101 or surge rating | Limited to low-energy signal-line protection; unsuitable for automotive power rail use | Choose only for cost-sensitive, non-automotive, low-power analog sensing nodes |
Compared with SMBJ24A and BZX84-C24, the BZD27B24P-HE3_A08 uniquely combines AEC-Q101 qualification, 150 W surge capability, ±2 % VZ tolerance, and DO-219AB thermal performance-making it the only option for high-reliability 24 V rail clamping where both precision regulation and rugged transient immunity are required.
Availability
BZD27B24P-HE3_A08 is available at Aetrix Electronics and suitable for automotive electronics, industrial PLCs, and telecom power systems requiring stable component supply with full traceability and long-lifecycle support.
Supply support for BZD27B24P-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 overvoltage protection in harsh-environment 12 V/24 V/48 V power systems.
FAQ
What is the Zener voltage tolerance of BZD27B24P-HE3_A08?
The BZD27B24P-HE3_A08 has a nominal Zener voltage of 24 V with a guaranteed tolerance of ±2 %, corresponding to a range of 23.52 V to 24.48 V at 25 mA test current. This tight tolerance is specified per the BZD27B Series datasheet Rev. 2.1 and enables precise voltage clamping without post-production trimming. The BZD27B24P-HE3_A08 achieves this consistency through silicon planar process control and 100 % parametric screening.
Is BZD27B24P-HE3_A08 qualified for automotive applications?
Yes, the BZD27B24P-HE3_A08 is AEC-Q101 qualified, as indicated by the "-HE3" suffix in its ordering code. It meets stress test requirements for temperature cycling, humidity bias, mechanical shock, and ESD (HBM > 8 kV, MM > 800 V). This qualification confirms suitability for under-hood and chassis-mounted automotive modules, including body control units and ADAS power supplies. The BZD27B24P-HE3_A08 also complies with JESD 201 Class 2 whisker testing and MSL Level 1 handling.
What is the maximum clamping voltage of BZD27B24P-HE3_A08 during a surge event?
The BZD27B24P-HE3_A08 clamps to a maximum of 32.3 V at 5 A under the 10/1000 μs waveform (per IEC 60-1), as documented in the "Electrical Characteristics" table on page 3 of the datasheet. This value represents worst-case transient suppression performance and ensures downstream 3.3 V or 5 V ICs remain within absolute maximum ratings. The BZD27B24P-HE3_A08 achieves this with low dynamic resistance (18 Ω) and optimized junction design for fast avalanche response.
Which package does BZD27B24P-HE3_A08 use, and what are its mounting requirements?
The BZD27B24P-HE3_A08 uses the DO-219AB (SMF) surface-mount package, measuring 2.9 mm × 1.9 mm × 0.85 mm with a cathode band marking. It requires a footprint matching the 3 mm × 3 mm copper pad layout specified in the datasheet (page 5), supports wave and reflow soldering, and is rated for peak reflow temperatures up to 260 °C. The BZD27B24P-HE3_A08 is MSL Level 1, eliminating bake requirements before assembly.
How does the temperature coefficient affect BZD27B24P-HE3_A08 performance in wide-temperature environments?
The BZD27B24P-HE3_A08 exhibits a positive temperature coefficient ranging from +0.06 %/°C to +0.11 %/°C, meaning its Zener voltage increases predictably with junction temperature. This behavior allows straightforward thermal compensation in high-precision applications and ensures stable clamping across –65 °C to +175 °C operating range. The BZD27B24P-HE3_A08 maintains regulation integrity in engine bay or industrial enclosure deployments where ambient swings exceed 100 °C.
BZD27B24P-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):
- 20V (Max)
- Voltage - Breakdown (Min):
- 23.52V
- Voltage - Clamping (Max) @ Ipp:
- 32.3V
- Current - Peak Pulse (10/1000µs):
- 4.4A
- 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)
BZD27B24P-HE3_A08 FAQ
1.How can I place an order for BZD27B24P-HE3_A08 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZD27B24P-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 BZD27B24P-HE3_A08 reliable?
The price and inventory of BZD27B24P-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 BZD27B24P-HE3_A08 is usually 5 days.
3.What payment methods are accepted for BZD27B24P-HE3_A08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZD27B24P-HE3_A08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZD27B24P-HE3_A08?
BZD27B24P-HE3_A08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZD27B24P-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 BZD27B24P-HE3_A08?
For technical support, including BZD27B24P-HE3_A08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZD27B24P-HE3_A08 requirements.
6.How does Aetrix verify that BZD27B24P-HE3_A08 is sourced from the original manufacturer or authorized distributors?
All BZD27B24P-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 BZD27B24P-HE3_A08 meets industry standards.
7.What is the process for return or replacement of BZD27B24P-HE3_A08?
All BZD27B24P-HE3_A08 units undergo pre-shipment inspection (PSI). If there is an issue with BZD27B24P-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 BZD27B24P-HE3_A08 part is unused and in its original packaging.
Return procedure for BZD27B24P-HE3_A08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZD27B24P-HE3_A08 Tags
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