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Vishay BZD27B20P-HE3_A08
- Part No.:
- BZD27B20P-HE3_A08
- Manufacturer:
- Vishay
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
BZD27B20P-HE3_A08.pdf
- Description:
- ZENER DIODE SMF DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,579
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Product details
Overview
BZD27B20P-HE3_A08 from Vishay Semiconductors is an AEC-Q101-qualified, surface-mount silicon planar Zener diode optimized for automotive-grade voltage regulation and transient overvoltage protection. It delivers a nominal Zener voltage of 20 V (±2 %), 25 mA test current, 16 V maximum working voltage (VWM), 27.3 V clamping voltage at 5 A surge current, and operates across –65 °C to +175 °C. It is used in engine control units and power supply rail stabilization.
For engineers reviewing the BZD27B20P-HE3_A08 datasheet, BZD27B20P-HE3_A08 pinout, BZD27B20P-HE3_A08 application, or BZD27B20P-HE3_A08 equivalent, key selection criteria include its ±2 % VZ tolerance, 150 W peak surge power rating (10/1000 μs), AEC-Q101 qualification, DO-219AB (SMF) package, and low dynamic resistance of 15 Ω at IZT.
Technical Context
This unidirectional Zener diode functions as both a precision voltage reference and a transient voltage suppressor. Its design integrates low leakage current (<1 μA at VR = 16 V), tight ±2 % Zener voltage tolerance, and robust 150 W non-repetitive surge capability per IEC 60-1 (10/1000 μs waveform).
The device uses silicon planar construction with a thermally efficient DO-219AB (SMF) package, achieving RthJA = 180 K/W on 3 mm × 3 mm Cu pads and RthJL = 30 K/W. It meets JESD201 Class 2 whisker testing and MSL Level 1 reflow compatibility up to 260 °C peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 19.6 V min / 20 V nom / 20.4 V max - enables precise 20 V rail regulation with ±2 % stability |
| Test Current (IZT) | 25 mA - standard bias point for guaranteed VZ specification and low dynamic resistance |
| Clamping Voltage (VC) | 27.3 V at IRSM = 5 A - defines maximum voltage seen during 10/1000 μs transients |
| Peak Surge Power (PRSM) | 150 W - supports high-energy ESD and load-dump suppression in automotive systems |
| Dynamic Resistance (ZZ) | 15 Ω max at IZT = 25 mA - ensures minimal voltage shift under varying load current |
| Temperature Coefficient (αVZ) | +0.06 %/°C to +0.11 %/°C - provides predictable, positive VZ drift over temperature |
| Operating Temperature | –65 °C to +175 °C - qualified for under-hood automotive environments |
| Package | DO-219AB (SMF) - low-profile SMD outline compatible with automated assembly and high thermal reliability |
Pinout & Package
DO-219AB (SMF) package: 2.7–2.9 mm length, 1.7–1.9 mm width, 0.8–1.2 mm height; cathode marked by band on top surface; designed for reflow soldering with MSL Level 1 handling.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; reference node in reverse-bias regulation | Connected to lower-potential side of protected circuit; forms ground return path during clamping |
| Cathode | Current exit terminal in forward bias; Zener breakdown terminal in reverse bias | Connected to higher-potential rail (e.g., 24 V battery line); absorbs surge energy into ground via PCB trace |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive electronics including powertrain and body control modules |
| ±2 % Zener voltage tolerance | Enables tighter system-level voltage margining without additional trimming components |
| 150 W peak surge power (10/1000 μs) | Meets ISO 7637-2 Pulse 5a load-dump immunity requirements for 12 V systems |
| Low dynamic resistance (15 Ω max) | Minimizes output voltage deviation during fast transient events and load steps |
| MSL Level 1 & 260 °C reflow compatible | Eliminates moisture-related popcorning risk and supports standard lead-free assembly |
| JESD201 Class 2 whisker resistance | Ensures long-term interconnect reliability in high-vibration automotive applications |
Applications
| Engine Control Unit (ECU) Power Rail Protection | Automotive Infotainment DC-DC Input Clamp |
|---|---|
Use Scenario: Suppresses load-dump transients on 12 V supply lines feeding microcontroller power domains. IC Role / Device Role / Timing Role: Unidirectional Zener clamp placed between battery rail and LDO input to limit voltage excursions. Use Value: Clamps to ≤27.3 V during 10/1000 μs surges, preventing LDO overvoltage failure and ensuring MCU reset integrity. | Use Scenario: Protects buck converter IC inputs from ISO 16750-2 jump-start spikes in head unit power supplies. IC Role / Device Role / Timing Role: Standoff voltage limiter shunting excess energy to ground before it reaches switching regulator controller. Use Value: Withstands 150 W surge pulses while maintaining <1 μA leakage at 16 V, preserving standby current budget. |
| Body Control Module (BCM) Sensor Reference Stabilization | Electric Power Steering (EPS) Motor Driver Gate Bias Clamp |
Use Scenario: Provides stable 20 V reference for analog sensor signal conditioning circuits exposed to alternator ripple. IC Role / Device Role / Timing Role: Precision Zener voltage source regulating op-amp bias rails and ADC reference buffers. Use Value: ±2 % VZ tolerance and +0.06–0.11 %/°C TC ensure <0.5 % total error over –40 °C to +125 °C operating range. | Use Scenario: Clamps gate drive voltage spikes induced by high-di/dt motor phase switching in 3-phase inverter stages. IC Role / Device Role / Timing Role: Fast-response Zener placed across high-side MOSFET gate-source to prevent VGS overstress. Use Value: 25 mA IZT and 15 Ω ZZ enable sub-100 ns response to gate ringing, limiting VGS to safe levels below 20 V. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ20A-E3/52 | TVS diode (not Zener); 20 V standoff, 300 W peak power, bidirectional | Designed for fast ESD/EMI suppression, not precision regulation; higher leakage (~1 μA at 16 V) | Select when primary need is high-speed transient clamping rather than stable DC reference |
| BZX84-C20LT1G | SOT-23 package; ±5 % VZ tolerance; 350 mW PD; no AEC-Q101 or surge rating | Intended for low-power consumer logic rails; lacks automotive qualification and surge endurance | Select only for cost-sensitive, non-automotive, low-energy applications with relaxed accuracy |
Compared with BZD27B20P-HE3_A08, SMBJ20A-E3/52 offers higher surge capacity but lacks precision regulation capability, while BZX84-C20LT1G provides compact packaging at the expense of automotive qualification, ±2 % tolerance, and 150 W surge rating-making BZD27B20P-HE3_A08 the sole choice for AEC-Q101-compliant 20 V Zener regulation with integrated transient suppression.
Availability
BZD27B20P-HE3_A08 is available at Aetrix Electronics and suitable for automotive power management, engine control unit protection, and industrial DC power rail stabilization requiring stable component supply and full AEC-Q101 compliance.
Supply support for BZD27B20P-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 automotive voltage regulation and transient suppression where precision, surge robustness, and high-temperature operation are mandatory.
FAQ
What is the Zener voltage tolerance for BZD27B20P-HE3_A08?
The BZD27B20P-HE3_A08 has a Zener voltage tolerance of ±2 %, specified as 19.6 V minimum, 20 V nominal, and 20.4 V maximum at 25 mA test current (IZT). This tight tolerance is maintained across the full operating temperature range and supports high-accuracy voltage reference and regulation applications in automotive systems.
Is BZD27B20P-HE3_A08 qualified for automotive use?
Yes, BZD27B20P-HE3_A08 is AEC-Q101 qualified and explicitly rated for automotive applications. Its qualification includes passing JESD201 Class 2 whisker testing, MSL Level 1 moisture sensitivity, and extended temperature operation from –65 °C to +175 °C-meeting requirements for engine control, body electronics, and powertrain subsystems.
What package type does BZD27B20P-HE3_A08 use?
BZD27B20P-HE3_A08 uses the DO-219AB (SMF) surface-mount package-a low-profile, thermally enhanced outline measuring 2.7–2.9 mm × 1.7–1.9 mm × 0.8–1.2 mm. It features a cathode band marking and is compatible with standard 8 mm tape-and-reel handling and lead-free reflow soldering up to 260 °C peak.
What is the clamping voltage of BZD27B20P-HE3_A08 under surge conditions?
Under a 10/1000 μs surge waveform at 5 A peak current (IRSM), the BZD27B20P-HE3_A08 clamps to a maximum of 27.3 V. This value is measured per IEC 60-1 and defines the upper voltage limit imposed on protected circuits during standardized automotive load-dump and surge events.
Does BZD27B20P-HE3_A08 support high-temperature operation?
Yes, BZD27B20P-HE3_A08 is rated for continuous operation from –65 °C to +175 °C junction temperature. Its silicon planar construction and DO-219AB package deliver stable Zener characteristics and low leakage (<1 μA at 16 V) across this full range-enabling reliable use in under-hood automotive environments and industrial power systems.
BZD27B20P-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):
- 16V (Max)
- Voltage - Breakdown (Min):
- 19.6V
- Voltage - Clamping (Max) @ Ipp:
- 27.3V
- Current - Peak Pulse (10/1000µs):
- 5.3A
- 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)
BZD27B20P-HE3_A08 FAQ
1.How can I place an order for BZD27B20P-HE3_A08 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZD27B20P-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 BZD27B20P-HE3_A08 reliable?
The price and inventory of BZD27B20P-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 BZD27B20P-HE3_A08 is usually 5 days.
3.What payment methods are accepted for BZD27B20P-HE3_A08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZD27B20P-HE3_A08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZD27B20P-HE3_A08?
BZD27B20P-HE3_A08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZD27B20P-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 BZD27B20P-HE3_A08?
For technical support, including BZD27B20P-HE3_A08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZD27B20P-HE3_A08 requirements.
6.How does Aetrix verify that BZD27B20P-HE3_A08 is sourced from the original manufacturer or authorized distributors?
All BZD27B20P-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 BZD27B20P-HE3_A08 meets industry standards.
7.What is the process for return or replacement of BZD27B20P-HE3_A08?
All BZD27B20P-HE3_A08 units undergo pre-shipment inspection (PSI). If there is an issue with BZD27B20P-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 BZD27B20P-HE3_A08 part is unused and in its original packaging.
Return procedure for BZD27B20P-HE3_A08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZD27B20P-HE3_A08 Tags
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