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Vishay BZD27B24P-HE3_A18
- Part No.:
- BZD27B24P-HE3_A18
- Manufacturer:
- Vishay
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
BZD27B24P-HE3_A18.pdf
- Description:
- ZENER DIODE SMF DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,037
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Product details
Overview
BZD27B24P-HE3_A18 from Vishay Semiconductors is a surface-mount, AEC-Q101 qualified Zener diode with nominal breakdown voltage 24 V (±2 %), 25 mA test current, 32.3 V clamping voltage at 5 A surge, and DO-219AB (SMF) package for automotive-grade overvoltage protection in power supply rails and ECU input conditioning.
For engineers reviewing the BZD27B24P-HE3_A18 datasheet, BZD27B24P-HE3_A18 pinout, BZD27B24P-HE3_A18 application, or BZD27B24P-HE3_A18 equivalent, key selection criteria include its 150 W peak surge power rating, -65 °C to +175 °C operating temperature range, MSL level 1 moisture sensitivity, and ±0.06 %/°C to +0.11 %/°C zener voltage temperature coefficient.
Technical Context
This unidirectional Zener diode operates as a precision voltage reference and transient voltage suppressor in DC bias networks and low-energy surge protection circuits. It features silicon planar construction, low leakage current (<5 μA at VR = 20 V), and dynamic resistance of 18 Ω at 25 mA test current.
The device meets AEC-Q101 qualification for automotive use, supports wave and reflow soldering per J-STD-020 (peak 260 °C), and exhibits robust thermal performance with RthJA = 180 K/W on 3 mm × 3 mm Cu pads and RthJL = 30 K/W.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 23.52 V min / 24 V nom / 24.48 V max - tight ±2 % tolerance enables stable regulation in 24 V system monitoring and feedback loops |
| Test Current (IZT) | 25 mA - standard bias point for verifying VZ specification and dynamic resistance |
| Clamping Voltage (VC) | 32.3 V at IRSM = 5 A (10/1000 μs) - defines maximum voltage seen by protected circuit during transient events |
| Peak Surge Power (PRSM) | 150 W - supports high-energy transients per IEC 61000-4-5 without failure |
| Junction Temperature (Tj) | 175 °C max - enables operation in under-hood automotive environments and industrial power supplies |
| Temperature Coefficient (αVZ) | +0.06 %/°C min / +0.11 %/°C max - ensures predictable VZ drift across full operating range |
| Package | DO-219AB (SMF) - low-profile SMD outline compatible with automated assembly and space-constrained PCB layouts |
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; footprint requires 1.3 mm × 1.3 mm pad with 1.4 mm center-to-center spacing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to lower-potential node in Zener mode | Must be routed to ground or return path when used as shunt regulator or TVS |
| Cathode | Current exit terminal in forward bias; connected to higher-potential node in Zener mode | Marked with band; ties to protected line or voltage rail requiring clamping |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive electronics including engine control units and body modules |
| MSL Level 1 rating | Enables unlimited floor life and single-reflow assembly without baking |
| 150 W peak surge power | Withstands IEC 61000-4-5 10/1000 μs surges up to 5 A without degradation |
| ±2 % VZ tolerance | Reduces need for post-production trimming in precision voltage reference designs |
| Low dynamic resistance (18 Ω) | Minimizes voltage shift under varying load current in regulation applications |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Protecting 24 V CAN bus power inputs against load dump and ISO 7637-2 pulses in vehicle ECUs. IC Role / Device Role / Timing Role: Shunt-type transient voltage suppressor placed between VCC and GND, clamping surges above 32.3 V. Use Value: Prevents damage to downstream CAN transceivers and microcontrollers during 12/24 V system transients. | Use Scenario: Stabilizing reference voltage for 4–20 mA loop-powered pressure sensors in factory automation. IC Role / Device Role / Timing Role: Precision Zener reference providing 24 V bias to op-amp signal conditioning circuitry. Use Value: Maintains ±2 % output accuracy over -40 °C to +125 °C ambient, supporting sensor calibration integrity. |
| DC-DC Converter Feedback Network | Telecom Line Interface Protection |
Use Scenario: Setting regulated output voltage in isolated 24 V flyback converters for industrial PLCs. IC Role / Device Role / Timing Role: Zener element in optocoupler feedback divider, defining primary-side regulation threshold. Use Value: Enables stable 24 V ±1 % output despite input variation and load step changes. | Use Scenario: Secondary-side overvoltage clamp on 24 V PoE-powered network interface cards. IC Role / Device Role / Timing Role: Standby TVS protecting PHY ICs from induced surges on Ethernet data lines. Use Value: Limits voltage excursion to ≤32.3 V during fast-rising transients, preserving Ethernet compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ24A-E3/52 | TVS diode (not Zener); 24 V standoff, 38.9 V clamping, 600 W peak power | Higher surge capacity but looser voltage tolerance (±5 %) and no precision regulation capability | Select when primary need is high-energy transient suppression, not voltage reference stability |
| BZX84-C24-HE3-08 | SOT-23 package; same 24 V nominal, ±5 % tolerance, 300 mW PD, no AEC-Q101 qualification | Limited to low-power consumer applications; unsuitable for automotive or high-surge industrial use | Select only for cost-sensitive, non-automotive designs where 150 W surge rating is unnecessary |
Compared with SMBJ24A-E3/52 and BZX84-C24-HE3-08, the BZD27B24P-HE3_A18 uniquely combines AEC-Q101 qualification, ±2 % VZ tolerance, and 150 W surge capability in a low-profile DO-219AB package-making it optimal for automotive 24 V rail protection where both precision and ruggedness are required.
Availability
BZD27B24P-HE3_A18 is available at Aetrix Electronics and suitable for automotive ECU protection, industrial 24 V power supply regulation, and telecom line interface clamping requiring stable component supply and long-term lifecycle support.
Supply support for BZD27B24P-HE3_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 automotive, industrial, and computing markets.
The BZD27B Series belongs to Vishay's AEC-Q101 qualified Zener diode product line, engineered specifically for precision voltage regulation and transient suppression in harsh-environment automotive and industrial power systems.
FAQ
What is the Zener voltage tolerance of BZD27B24P-HE3_A18?
The BZD27B24P-HE3_A18 has a nominal Zener voltage of 24 V with a guaranteed tolerance of ±2 %, meaning the actual breakdown voltage falls between 23.52 V and 24.48 V at 25 mA test current. This tight tolerance is specified per the BZD27B Series datasheet Rev. 2.1 and supports high-accuracy voltage reference and regulation applications where minimal drift is critical. The BZD27B24P-HE3_A18 achieves this via silicon planar process control and 100 % parametric screening.
Does BZD27B24P-HE3_A18 support lead-free reflow soldering?
Yes, the BZD27B24P-HE3_A18 is fully compatible with lead-free reflow soldering processes, meeting J-STD-020 requirements with a maximum peak temperature of 260 °C. Its DO-219AB (SMF) package uses UL 94 V-0 molding compound and is rated MSL Level 1, allowing unlimited floor life and single-reflow assembly without preconditioning. The BZD27B24P-HE3_A18 also passes JESD201 Class 2 whisker testing, confirming long-term interconnect reliability after soldering.
What is the maximum clamping voltage of BZD27B24P-HE3_A18 during a surge event?
The BZD27B24P-HE3_A18 exhibits a maximum clamping voltage (VC) of 32.3 V at a 10/1000 μs surge current of 5 A, as specified in the "Electrical Characteristics" table for protection-mode operation. This value defines the upper voltage limit imposed on protected circuitry during standardized transient events. The BZD27B24P-HE3_A18 maintains this clamping performance across its full operating temperature range (-65 °C to +175 °C), ensuring consistent protection in demanding automotive and industrial environments.
Is BZD27B24P-HE3_A18 qualified for automotive applications?
Yes, the BZD27B24P-HE3_A18 is explicitly AEC-Q101 qualified, as indicated by the "-HE3" suffix in its ordering code and confirmed in the Vishay BZD27B Series datasheet. It meets human body model ESD >8 kV and machine model >800 V, passes JESD201 Class 2 whisker testing, and is rated for operation from -65 °C to +175 °C junction temperature-fulfilling core requirements for under-hood and chassis-mounted automotive electronics. The BZD27B24P-HE3_A18 is designed for use in ECUs, ADAS power supplies, and infotainment system protection circuits.
What package type does BZD27B24P-HE3_A18 use, and what are its key mechanical dimensions?
The BZD27B24P-HE3_A18 uses the DO-219AB (SMF) surface-mount package, measuring 2.7–2.9 mm in length, 1.7–1.9 mm in width, and 0.8–1.08 mm in height. Its cathode is marked by a visible band, and orientation in tape follows standard SMF carrier layout with cathode facing unreeling direction. The recommended footprint uses 1.3 mm × 1.3 mm copper pads spaced 1.4 mm center-to-center. This compact, low-profile package supports high-density PCB layouts while maintaining thermal performance (RthJA = 180 K/W on 3 mm × 3 mm pads). The BZD27B24P-HE3_A18 is compatible with both SOD-123W and SOD-123F footprints per Vishay documentation.
BZD27B24P-HE3_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):
- 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_A18 FAQ
1.How can I place an order for BZD27B24P-HE3_A18 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZD27B24P-HE3_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 BZD27B24P-HE3_A18 reliable?
The price and inventory of BZD27B24P-HE3_A18 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_A18 is usually 5 days.
3.What payment methods are accepted for BZD27B24P-HE3_A18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZD27B24P-HE3_A18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZD27B24P-HE3_A18?
BZD27B24P-HE3_A18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZD27B24P-HE3_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 BZD27B24P-HE3_A18?
For technical support, including BZD27B24P-HE3_A18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZD27B24P-HE3_A18 requirements.
6.How does Aetrix verify that BZD27B24P-HE3_A18 is sourced from the original manufacturer or authorized distributors?
All BZD27B24P-HE3_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 BZD27B24P-HE3_A18 meets industry standards.
7.What is the process for return or replacement of BZD27B24P-HE3_A18?
All BZD27B24P-HE3_A18 units undergo pre-shipment inspection (PSI). If there is an issue with BZD27B24P-HE3_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 BZD27B24P-HE3_A18 part is unused and in its original packaging.
Return procedure for BZD27B24P-HE3_A18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZD27B24P-HE3_A18 Tags
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