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Vishay BZD27B22P-HE3_A08
- Part No.:
- BZD27B22P-HE3_A08
- Manufacturer:
- Vishay
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
BZD27B22P-HE3_A08.pdf
- Description:
- ZENER DIODE SMF DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,181
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Product details
Overview
BZD27B22P-HE3_A08 from Vishay Semiconductors is a surface-mount, AEC-Q101 qualified Zener diode with nominal zener voltage 22 V (±2 %), 25 mA test current, 30 W non-repetitive peak surge power rating, 175 °C maximum junction temperature, and DO-219AB (SMF) package - used for precision voltage regulation and transient overvoltage protection in automotive power rails.
For engineers reviewing the BZD27B22P-HE3_A08 datasheet, BZD27B22P-HE3_A08 pinout, BZD27B22P-HE3_A08 application, or BZD27B22P-HE3_A08 equivalent, key selection criteria include zener voltage tolerance, surge current capability (10/1000 μs waveform), thermal resistance (RthJA = 180 K/W), AEC-Q101 qualification status, and SOD-123W-compatible footprint.
Technical Context
This unidirectional Zener diode operates in reverse breakdown to clamp or regulate voltage with low dynamic impedance (16 Ω typical at 25 mA) and tight ±2 % VZ tolerance. It features low leakage current (≤5 μA at 18 V), negative-to-positive temperature coefficient (0.06 to 0.11 %/°C), and robust surge handling per IEC 60-1 (10/1000 μs).
Designed for high-reliability automotive environments, it meets JESD201 Class 2 whisker testing, MSL Level 1 moisture sensitivity, and wave/reflow soldering compatibility up to 260 °C peak. Its SMF (DO-219AB) package enables compact PCB layout while maintaining 150 W peak pulse power dissipation (PRSM) under standardized surge conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 21.56 V min. / 22 V nom. / 22.44 V max. - ensures stable 22 V reference within ±2 % across production lot and temperature range |
| Test Current (IZT) | 25 mA - defines operating point where VZ and dynamic resistance are specified; matches typical bias for automotive regulator feedback networks |
| Dynamic Resistance (ZZ) | 6 Ω max. at 25 mA - enables fast response to load transients and low output impedance in shunt regulation circuits |
| Clamping Voltage (VC) | 30 V at IRSM = 4.8 A (10/1000 μs) - limits surge-induced voltage overshoot to safe levels for downstream 24 V system components |
| Peak Pulse Power (PRSM) | 150 W - supports IEC 61000-4-5 level 4 surge immunity compliance without external series impedance |
| Junction Temperature (Tj) | −65 °C to +175 °C - enables operation in under-hood automotive locations with minimal derating up to 150 °C ambient |
| ESD Rating | HBM > 8 kV, MM > 800 V - protects against assembly-line and field electrostatic discharge events without additional circuitry |
Pinout & Package
Package: DO-219AB (SMF), low-profile surface-mount case compatible with SOD-123W footprint; dimensions 2.9 × 1.4 × 0.85 mm (L × W × H); cathode marked by band on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Surge current return path | Connected to system ground or low-side reference; carries full surge current during clamping |
| Cathode | Zener breakdown terminal / Voltage reference node | Connected to protected rail; establishes precise 22 V clamp level relative to anode potential |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control units and body electronics requiring zero-failure reliability |
| ±2 % VZ tolerance | Reduces need for post-production trimming and improves batch-to-batch consistency in safety-critical voltage monitoring |
| 150 W 10/1000 μs surge rating | Enables single-device transient voltage suppression without series resistors or TVS arrays in 12/24 V systems |
| MSL Level 1 & 260 °C reflow compatible | Eliminates pre-baking requirements and supports standard lead-free assembly processes |
| Low RthJA (180 K/W) | Permits higher continuous power dissipation on standard 3 mm × 3 mm Cu pads without thermal vias |
Applications
| Automotive Power Rail Protection | Industrial Sensor Reference Stabilization |
|---|---|
Use Scenario: Protecting LIN bus transceivers and CAN nodes from load dump and jump-start surges in 12 V vehicle electrical systems. IC Role / Device Role / Timing Role: Unidirectional shunt clamping device placed between VCC and ground to limit transient overvoltage to ≤30 V. Use Value: Prevents damage to 3.3 V/5 V logic interfaces by clamping 10/1000 μs surges up to 4.8 A without degradation after 1000+ events. |
Use Scenario: Providing stable 22 V reference for analog front-end amplifiers in industrial pressure and temperature sensors. IC Role / Device Role / Timing Role: Precision Zener voltage source supplying bias current to op-amp input stages and ADC reference dividers. Use Value: Maintains <±0.5 % output stability over −40 °C to +125 °C due to low tempco (0.06–0.11 %/°C) and low dynamic impedance. |
| DC-DC Converter Feedback Regulation | Overvoltage Lockout Circuitry |
Use Scenario: Setting regulated output voltage in isolated flyback converters for automotive infotainment power supplies. IC Role / Device Role / Timing Role: Zener element in optocoupler feedback loop that adjusts primary-side duty cycle based on secondary-side voltage error. Use Value: Enables ±2 % output accuracy across line/load/temperature with minimal drift, reducing need for digital calibration. |
Use Scenario: Triggering shutdown of battery management ICs when 24 V supply exceeds safe threshold during charging faults. IC Role / Device Role / Timing Role: Threshold detection element driving comparator input via resistor divider; activates fault latch at 22.5 V. Use Value: Provides deterministic trip point with <100 mV hysteresis margin, avoiding nuisance trips during normal ripple or transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ22A | TVS diode (unidirectional), 22 V standoff, 300 W peak power, higher leakage (>1 μA at 17.6 V), no tight VZ tolerance | Optimized for surge-only clamping; lacks precision regulation capability | Select when primary requirement is high-energy transient suppression rather than stable DC reference |
| BZX84-C22 | SOT-23 Zener, ±5 % VZ, 300 mW PD, RthJA ≈ 300 K/W, commercial grade only | Lower power, lower reliability, unsuitable for automotive under-hood use | Select only for cost-sensitive consumer applications with ambient <85 °C and no AEC-Q101 requirement |
Compared with SMBJ22A and BZX84-C22, the BZD27B22P-HE3_A08 uniquely combines AEC-Q101 qualification, ±2 % voltage tolerance, 150 W surge rating, and DO-219AB thermal performance - making it the only choice for automotive-grade precision regulation with integrated surge resilience.
Availability
BZD27B22P-HE3_A08 is available at Aetrix Electronics and suitable for automotive power protection, industrial sensor reference stabilization, DC-DC converter feedback regulation, and overvoltage lockout circuits requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for BZD27B22P-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 targets automotive-grade voltage regulation and transient protection, engineered to meet AEC-Q101 stress tests and deliver precision Zener performance in harsh under-hood environments.
FAQ
What is the zener voltage tolerance of BZD27B22P-HE3_A08?
The BZD27B22P-HE3_A08 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. This tight tolerance is maintained across the full operating temperature range and qualifies the device for precision regulation in automotive and industrial systems where reference stability is critical. The BZD27B22P-HE3_A08 achieves this via process-controlled silicon planar construction and 100 % parametric screening.
Is BZD27B22P-HE3_A08 qualified for automotive applications?
Yes, the BZD27B22P-HE3_A08 is explicitly AEC-Q101 qualified, as indicated by the "-HE3" suffix in its ordering code. It passes all required stress tests including high-temperature reverse bias, temperature cycling, humidity bias, and mechanical shock - with validation documented in Vishay's qualification report. This makes the BZD27B22P-HE3_A08 suitable for safety-critical automotive subsystems such as body control modules, ADAS power supplies, and battery disconnect units where component failure could impact vehicle function.
What is the maximum surge current the BZD27B22P-HE3_A08 can handle?
The BZD27B22P-HE3_A08 supports a non-repetitive peak reverse surge current of 4.8 A under the standardized 10/1000 μs waveform, corresponding to 150 W peak pulse power (PRSM). This rating is verified per IEC 60-1 and applies when mounted on a 3 mm × 3 mm copper pad on epoxy-glass PCB. The BZD27B22P-HE3_A08 maintains clamping voltage ≤30 V at this current level, ensuring downstream ICs remain within absolute maximum ratings during load dump events.
What package type does BZD27B22P-HE3_A08 use, and is it compatible with standard pick-and-place equipment?
The BZD27B22P-HE3_A08 uses the DO-219AB (SMF) surface-mount package - a low-profile, rectangular case measuring 2.9 mm × 1.4 mm × 0.85 mm with cathode marking on the top surface. It is supplied in 8 mm tape on 7″ reels (3000 units/reel) and fully compatible with standard vision-guided pick-and-place machines. The package meets IPC-7351B footprint recommendations and is mechanically and thermally compatible with SOD-123W layouts, enabling drop-in replacement in existing designs.
How does the temperature coefficient affect BZD27B22P-HE3_A08 performance in wide-temperature environments?
The BZD27B22P-HE3_A08 exhibits a positive temperature coefficient of +0.06 to +0.11 %/°C, meaning its zener voltage increases linearly with junction temperature. At 125 °C, the shift is approximately +0.22 V relative to 25 °C - well within the ±2 % initial tolerance band. This predictable drift allows designers to compensate in feedback networks or select adjacent voltage grades for tighter overall system tolerance. The BZD27B22P-HE3_A08's coefficient is tightly controlled and characterized across −65 °C to +175 °C, supporting reliable operation in extreme automotive and industrial settings.
BZD27B22P-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):
- 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_A08 FAQ
1.How can I place an order for BZD27B22P-HE3_A08 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZD27B22P-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 BZD27B22P-HE3_A08 reliable?
The price and inventory of BZD27B22P-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 BZD27B22P-HE3_A08 is usually 5 days.
3.What payment methods are accepted for BZD27B22P-HE3_A08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZD27B22P-HE3_A08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZD27B22P-HE3_A08?
BZD27B22P-HE3_A08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZD27B22P-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 BZD27B22P-HE3_A08?
For technical support, including BZD27B22P-HE3_A08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZD27B22P-HE3_A08 requirements.
6.How does Aetrix verify that BZD27B22P-HE3_A08 is sourced from the original manufacturer or authorized distributors?
All BZD27B22P-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 BZD27B22P-HE3_A08 meets industry standards.
7.What is the process for return or replacement of BZD27B22P-HE3_A08?
All BZD27B22P-HE3_A08 units undergo pre-shipment inspection (PSI). If there is an issue with BZD27B22P-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 BZD27B22P-HE3_A08 part is unused and in its original packaging.
Return procedure for BZD27B22P-HE3_A08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZD27B22P-HE3_A08 Tags
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