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Vishay BZD27B22P-HE3_A18
- Part No.:
- BZD27B22P-HE3_A18
- Manufacturer:
- Vishay
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
BZD27B22P-HE3_A18.pdf
- Description:
- ZENER DIODE SMF DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,692
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Product details
Overview
BZD27B22P-HE3_A18 from Vishay Semiconductors is a surface-mount, AEC-Q101 qualified Zener diode with nominal breakdown voltage of 22 V (±2 %), 25 mA test current, 16 Ω dynamic resistance at IZT, and 4.8 V clamping voltage at 30 A surge current. It serves as a precision voltage reference and transient overvoltage protector in automotive power rails and industrial sensor interfaces.
For engineers reviewing the BZD27B22P-HE3_A18 datasheet, BZD27B22P-HE3_A18 pinout, BZD27B22P-HE3_A18 application, or BZD27B22P-HE3_A18 equivalent, key selection criteria include its ±2 % VZ tolerance, 150 W peak surge power rating (10/1000 μs), -65 °C to +175 °C operating temperature range, and DO-219AB (SMF) package compatibility with automated reflow assembly.
Technical Context
This unidirectional Zener diode operates in reverse-bias breakdown mode for voltage regulation and transient suppression. Its design integrates low leakage (<5 μA at VR = 18 V), stable temperature coefficient (+0.06 to +0.11 %/°C), and robust surge capability per IEC 60-1 (10/1000 μs waveform).
The device uses silicon planar construction and meets JESD201 Class 2 whisker testing, MSL Level 1 moisture sensitivity, and AEC-Q101 qualification-enabling use in under-hood automotive electronics where thermal cycling and long-term stability are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 21.56 V min / 22 V nom / 22.44 V max - tight ±2 % tolerance enables accurate voltage reference without trimming |
| Test Current (IZT) | 25 mA - standard bias point for specifying VZ and dynamic resistance |
| Dynamic Resistance (ZZ) | 16 Ω max at IZT - ensures minimal output impedance during regulation |
| Clamping Voltage (VC) | 30 V at IRSM = 30 A (10/1000 μs) - defines maximum voltage seen by protected circuit during surge |
| Peak Surge Power (PRSM) | 150 W - supports high-energy transients per IEC 60-1 standard |
| Operating Temperature | -65 °C to +175 °C - qualified for engine control units and powertrain modules |
| Package | DO-219AB (SMF) - low-profile SMD footprint (2.7 × 3.5 mm) compatible with high-density PCB layouts |
Pinout & Package
Package: DO-219AB (SMF), molded surface-mount case with cathode band marking; dimensions 2.7 mm × 3.5 mm × 1.08 mm; MSL Level 1, reflow-compatible up to 260 °C peak.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential node in reverse-bias protection configuration |
| Cathode | Zener breakdown terminal | Marked end; connected to higher-potential rail to clamp overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including powertrain and body electronics |
| ±2 % VZ tolerance | Reduces need for binning or external calibration in precision reference designs |
| 150 W peak surge rating (10/1000 μs) | Withstands load-dump and ISO 7637-2 pulse 5a transients without failure |
| Low leakage current | <5 μA at 18 V reverse bias minimizes standby power loss in always-on circuits |
| MSL Level 1 & 260 °C reflow | Enables single-pass assembly without baking or special handling |
Applications
| Automotive Engine Control Unit (ECU) | Industrial PLC Analog Input Module |
|---|---|
Use Scenario: Protecting 24 V supply rail against load-dump transients in diesel ECU power management. IC Role / Device Role / Timing Role: Unidirectional Zener clamp placed across input rail to limit voltage to ≤30 V during 150 W surge events. Use Value: Prevents damage to downstream DC-DC converters and microcontrollers while maintaining AEC-Q101 compliance. | Use Scenario: Stabilizing reference voltage for 16-bit ADC in programmable logic controller analog front-end. IC Role / Device Role / Timing Role: Precision 22 V Zener providing low-drift bias for voltage divider network feeding ADC reference input. Use Value: ±2 % VZ tolerance and +0.06 %/°C TC ensure <0.1 % full-scale error over -40 °C to +85 °C operating range. |
| Telecom Base Station Power Monitoring | Medical Infusion Pump Motor Driver Protection |
Use Scenario: Overvoltage detection on 24 V backup battery interface in remote radio unit. IC Role / Device Role / Timing Role: Zener-based comparator threshold element triggering shutdown when input exceeds 22.5 V. Use Value: Tight VZ distribution and low tempco enable reliable trip-point accuracy across environmental stress tests. | Use Scenario: Suppressing inductive kickback from brushed DC motor driver H-bridge outputs. IC Role / Device Role / Timing Role: Transient voltage suppressor clamping flyback spikes to 30 V during MOSFET turn-off. Use Value: 150 W surge rating and 175 °C junction rating support continuous operation in sealed, fanless enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ22A-E3/52 | TVS diode (not Zener); 22 V standoff, 33.2 V clamping at 10.2 A; 600 W peak power | Designed for fast transient suppression only-not suitable for precision voltage reference | Select when primary need is high-speed surge clamping, not regulated DC bias |
| BZX84-C22-HE3-08 | SOT-23 package; ±5 % VZ tolerance; 22 V nominal; 500 mW Ptot; no AEC-Q101 qualification | Limited to low-power consumer/industrial applications; unsuitable for automotive under-hood use | Select only for cost-sensitive, non-automotive designs requiring smaller footprint and lower surge immunity |
Compared with SMBJ22A-E3/52 and BZX84-C22-HE3-08, BZD27B22P-HE3_A18 uniquely combines AEC-Q101 qualification, ±2 % VZ tolerance, and 150 W surge capability in a thermally efficient DO-219AB package-making it the only option qualified for automotive power rail stabilization and precision reference roles.
Availability
BZD27B22P-HE3_A18 is available at Aetrix Electronics and suitable for automotive ECU designs, industrial PLC analog modules, telecom power monitoring systems, and medical infusion pump motor drivers requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for BZD27B22P-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 targets high-stability, high-surge Zener applications in harsh environments-designed specifically for automotive power management, industrial sensor conditioning, and telecom infrastructure where AEC-Q101 compliance and ±2 % voltage accuracy are mandatory.
FAQ
What is the Zener voltage tolerance for BZD27B22P-HE3_A18?
The BZD27B22P-HE3_A18 has a nominal Zener voltage of 22 V with a guaranteed tolerance of ±2 %, meaning the actual breakdown voltage falls between 21.56 V and 22.44 V at 25 mA test current and 25 °C ambient temperature. This tight tolerance is confirmed in the Vishay BZD27B Series datasheet (Document Number: 85921, Rev. 2.1) and is maintained across the full -65 °C to +175 °C operating range due to its specified temperature coefficient of +0.06 to +0.11 %/°C.
Is BZD27B22P-HE3_A18 qualified for automotive applications?
Yes, BZD27B22P-HE3_A18 is AEC-Q101 qualified, as indicated by the "-HE3" suffix in its ordering code. It meets all stress tests required for automotive discrete semiconductors-including high-temperature operating life, temperature cycling, and mechanical shock-and is rated for operation from -65 °C to +175 °C. The device is explicitly intended for under-hood and powertrain applications such as engine control units and battery management systems.
What is the maximum clamping voltage of BZD27B22P-HE3_A18 during a surge event?
The BZD27B22P-HE3_A18 has a maximum clamping voltage (VC) of 30 V at a peak surge current (IRSM) of 30 A under the 10/1000 μs waveform defined in IEC 60-1. This value is measured at TJ = 25 °C prior to surge and represents the highest voltage the protected circuit will experience during standardized transient events. The clamping performance is validated in the "Electrical Characteristics" table on page 3 of the Vishay BZD27B Series datasheet.
Which package does BZD27B22P-HE3_A18 use, and what are its key mechanical features?
BZD27B22P-HE3_A18 uses the DO-219AB (SMF) package-a low-profile surface-mount outline measuring 2.7 mm × 3.5 mm × 1.08 mm. Key features include MSL Level 1 moisture sensitivity, compatibility with lead-free reflow soldering up to 260 °C peak temperature, JESD201 Class 2 whisker resistance, and a cathode band marking for polarity identification. Package dimensions and footprint recommendations are detailed in Figure 5 of the Vishay BZD27B Series datasheet.
How does the thermal performance of BZD27B22P-HE3_A18 compare to standard SOD-123 devices?
BZD27B22P-HE3_A18 offers superior thermal performance versus standard SOD-123 devices due to its DO-219AB (SMF) package, which provides a junction-to-lead thermal resistance (RthJL) of 30 K/W and junction-to-ambient resistance (RthJA) of 180 K/W on a 3 mm × 3 mm Cu pad. In contrast, typical SOD-123 packages exhibit RthJA > 300 K/W. This 40 % improvement in thermal dissipation allows BZD27B22P-HE3_A18 to sustain higher continuous power and survive repeated surge events without thermal runaway.
BZD27B22P-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):
- 18V (Max)
- Voltage - Breakdown (Min):
- 21.56V
- Voltage - Clamping (Max) @ Ipp:
- 30V
- Current - Peak Pulse (10/1000µs):
- 4.8A
- 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)
BZD27B22P-HE3_A18 FAQ
1.How can I place an order for BZD27B22P-HE3_A18 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZD27B22P-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 BZD27B22P-HE3_A18 reliable?
The price and inventory of BZD27B22P-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 BZD27B22P-HE3_A18 is usually 5 days.
3.What payment methods are accepted for BZD27B22P-HE3_A18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZD27B22P-HE3_A18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZD27B22P-HE3_A18?
BZD27B22P-HE3_A18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZD27B22P-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 BZD27B22P-HE3_A18?
For technical support, including BZD27B22P-HE3_A18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZD27B22P-HE3_A18 requirements.
6.How does Aetrix verify that BZD27B22P-HE3_A18 is sourced from the original manufacturer or authorized distributors?
All BZD27B22P-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 BZD27B22P-HE3_A18 meets industry standards.
7.What is the process for return or replacement of BZD27B22P-HE3_A18?
All BZD27B22P-HE3_A18 units undergo pre-shipment inspection (PSI). If there is an issue with BZD27B22P-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 BZD27B22P-HE3_A18 part is unused and in its original packaging.
Return procedure for BZD27B22P-HE3_A18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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