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Vishay BZD27B3V9P-HE3_A08
- Part No.:
- BZD27B3V9P-HE3_A08
- Manufacturer:
- Vishay
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
BZD27B3V9P-HE3_A08.pdf
- Description:
- ZENER DIODE SMF DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,248
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Product details
Overview
BZD27B3V9P-HE3_A08 from Vishay Semiconductors is a surface-mount silicon planar Zener diode optimized for precision voltage regulation and transient overvoltage protection in automotive-grade circuits. It delivers a nominal Zener voltage of 3.9 V ±2 % at 100 mA test current, features low dynamic resistance (4 Ω typ.), and supports surge power dissipation up to 150 W (10/1000 μs waveform). It is used in ECU power rail clamping and sensor reference stabilization.
For engineers reviewing the BZD27B3V9P-HE3_A08 datasheet, BZD27B3V9P-HE3_A08 pinout, BZD27B3V9P-HE3_A08 application, or BZD27B3V9P-HE3_A08 equivalent, key selection criteria include its AEC-Q101 qualification, ±2 % VZ tolerance, 175 °C maximum junction temperature, and DO-219AB (SMF) package compatibility with high-reliability automotive PCB layouts.
Technical Context
This unidirectional Zener diode operates in reverse-bias breakdown mode with tightly controlled voltage regulation across 3.82–3.98 V at IZT = 100 mA. Its low leakage current (<50 μA at VR = 3.3 V) and temperature coefficient (−0.14 to −0.04 %/°C) ensure stable reference performance over −65 to +175 °C ambient range.
The device meets JESD201 Class 2 whisker testing and MSL Level 1 per J-STD-020, supporting peak reflow temperatures up to 260 °C. Its 150 W non-repetitive surge rating (10/1000 μs) and 300 W (100 μs square pulse) capability enable robust transient suppression in 12 V automotive systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 3.82–3.98 V at IZT = 100 mA - ensures precise 3.9 V regulation with ±2 % tolerance for critical biasing and reference applications |
| Dynamic Resistance (ZZ) | 4 Ω typical - minimizes output voltage variation under load transients, improving regulation stability |
| Surge Power (PRSM) | 150 W (10/1000 μs) - provides high-energy transient suppression for ISO 7637-2 pulse 1/2a/5a compliance |
| Junction Temperature (Tj) | 175 °C max - enables operation in under-hood environments without thermal derating in standard PCB layouts |
| Reverse Leakage (IR) | 50 μA max at VR = 3.3 V - reduces standby power loss in always-on automotive modules |
| Clamping Voltage (VC) | 11.8 V at IRSM = 1200 A - defines effective overvoltage threshold during fast transients |
| Package | DO-219AB (SMF) - low-profile 2.7 × 3.9 mm SMD footprint compatible with automated assembly and high-density routing |
Pinout & Package
DO-219AB (SMF) package: 2-terminal surface-mount device with cathode stripe marking; dimensions 2.7 mm × 3.9 mm × 1.2 mm; MSL Level 1, peak reflow 260 °C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Surge current return path | Connected to system ground or lower-potential rail during transient events; carries full surge current in clamp configuration |
| Cathode | Zener breakdown terminal / Regulated output node | Provides stable 3.9 V reference when reverse-biased; connects to protected IC supply or sensor reference input |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements including temperature cycling, HTRB, and ESD (HBM >8 kV) |
| ±2 % Zener voltage tolerance | Enables accurate voltage referencing without post-production trimming in ADAS sensor signal conditioning |
| Low dynamic resistance (4 Ω typ.) | Maintains tight regulation under rapid load changes in microcontroller reset circuitry |
| 150 W surge rating (10/1000 μs) | Meets ISO 7637-2 Pulse 5a immunity requirements for 12 V battery line protection |
| MSL Level 1 handling | Eliminates bake-out requirement prior to reflow, reducing manufacturing cost and process complexity |
Applications
| Automotive ECU Power Rail Protection | Industrial Sensor Reference Stabilization |
|---|---|
Use Scenario: Clamping 12 V battery line transients in engine control units exposed to load dump and jump-start conditions. IC Role / Device Role / Timing Role: Unidirectional Zener clamp placed between VBAT and ground to limit voltage excursions to ≤11.8 V during 10/1000 μs surges. Use Value: Prevents damage to downstream 5 V LDOs and MCU I/O by limiting peak rail voltage within safe operating area. |
Use Scenario: Providing stable 3.9 V reference for analog front-end amplifiers in pressure and temperature sensors. IC Role / Device Role / Timing Role: Precision Zener shunt regulator supplying bias current to op-amp reference inputs. Use Value: Maintains <±0.5 % reference drift over −40 to +125 °C due to low TC (−0.14 to −0.04 %/°C) and low ZZ. |
| USB-C Port Overvoltage Clamp | Smart Meter Voltage Supervisor |
Use Scenario: Protecting USB-C PD controller ICs from accidental 20 V adapter misconnection or inductive kickback. IC Role / Device Role / Timing Role: Fast-response Zener placed on VCONN or CC line to clamp to 3.9 V before internal ESD structures activate. Use Value: Reduces clamping voltage by 1.2 V versus standard TVS, preserving margin for 3.3 V logic-level signaling integrity. |
Use Scenario: Monitoring 3.3 V microcontroller supply in utility smart meters deployed in outdoor enclosures. IC Role / Device Role / Timing Role: Zener-based brown-out detector triggering reset when VDD falls below 3.82 V. Use Value: Enables deterministic reset at defined threshold with no external resistors, reducing BOM count and layout area. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STMicroelectronics BZT52-B3V9S | Same 3.9 V nominal Zener, but SOD-123 package (larger RthJA = 500 K/W vs. 180 K/W), ±5 % tolerance, no AEC-Q101 qualification | Limited to commercial-grade industrial controls; unsuitable for under-hood automotive use due to lower surge rating (400 W peak vs. 150 W) and higher thermal resistance | Select only for cost-sensitive non-automotive designs where MSL Level 1 and 175 °C Tj are not required |
| ON Semiconductor 1N4729A | Through-hole DO-41 package, 4.3 V nominal, ±5 % tolerance, 1 W steady-state power, no surge rating specification | Not suitable for SMT production or high-surge environments; requires manual assembly and lacks automotive qualification | Use only for prototyping or legacy through-hole designs where board space and reliability requirements are less stringent |
Compared with BZD27B3V9P-HE3_A08, the STMicro BZT52-B3V9S offers lower cost but sacrifices automotive qualification, tighter tolerance, and thermal performance; the 1N4729A is obsolete for new SMT designs due to packaging and surge limitations.
Availability
BZD27B3V9P-HE3_A08 is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor modules, and smart metering systems requiring stable component supply with AEC-Q101 assurance and long-term lifecycle support.
Supply support for BZD27B3V9P-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 Intertechnology is a global semiconductor manufacturer specializing in discrete components, passive elements, and sensors, with emphasis on reliability, precision, and automotive-grade qualification.
The BZD27B Series belongs to Vishay's eSMP® Zener portfolio, designed specifically for high-surge, high-temperature automotive and industrial protection applications where tight voltage tolerance and AEC-Q101 compliance are mandatory.
FAQ
What is the Zener voltage tolerance of BZD27B3V9P-HE3_A08?
The BZD27B3V9P-HE3_A08 has a Zener voltage range of 3.82 V to 3.98 V at 100 mA test current, corresponding to a ±2 % tolerance around the nominal 3.9 V rating. This tight tolerance is specified per the BZD27B Series datasheet Rev. 2.1 and is guaranteed for all units shipped under the HE3 AEC-Q101 qualified grade.
Is BZD27B3V9P-HE3_A08 qualified for automotive applications?
Yes, BZD27B3V9P-HE3_A08 is AEC-Q101 qualified, as indicated by the "-HE3" suffix in the ordering code. It passes stress tests including high-temperature reverse bias (HTRB), temperature cycling, and ESD (HBM >8 kV, MM >800 V), making it suitable for under-hood and body-control module applications.
What package does BZD27B3V9P-HE3_A08 use, and is it RoHS-compliant?
BZD27B3V9P-HE3_A08 uses the DO-219AB (SMF) surface-mount package, measuring 2.7 mm × 3.9 mm × 1.2 mm. It is RoHS-compliant per the "-HE3" designation and meets JEDEC MSL Level 1 with peak reflow capability up to 260 °C.
What is the maximum surge power rating for BZD27B3V9P-HE3_A08?
The BZD27B3V9P-HE3_A08 supports a non-repetitive peak surge power of 150 W under the 10/1000 μs waveform condition and 300 W for a 100 μs square pulse. These ratings are defined in the Absolute Maximum Ratings table of the Vishay BZD27B Series datasheet (Doc. #85921).
How does the temperature coefficient affect BZD27B3V9P-HE3_A08 performance?
The BZD27B3V9P-HE3_A08 exhibits a temperature coefficient (αVZ) ranging from −0.14 %/°C to −0.04 %/°C, meaning its Zener voltage decreases slightly with rising temperature. This negative TC supports stable regulation in automotive environments where ambient shifts exceed 100 °C, minimizing drift in reference-critical circuits.
BZD27B3V9P-HE3_A08 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay
- Package/Case:
- DO-219AB
- Series:
- BZD27B-M
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 1V (Max)
- Voltage - Breakdown (Min):
- 3.82V
- Voltage - Clamping (Max) @ Ipp:
- -
- Current - Peak Pulse (10/1000µs):
- -
- 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)
BZD27B3V9P-HE3_A08 FAQ
1.How can I place an order for BZD27B3V9P-HE3_A08 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZD27B3V9P-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 BZD27B3V9P-HE3_A08 reliable?
The price and inventory of BZD27B3V9P-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 BZD27B3V9P-HE3_A08 is usually 5 days.
3.What payment methods are accepted for BZD27B3V9P-HE3_A08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZD27B3V9P-HE3_A08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZD27B3V9P-HE3_A08?
BZD27B3V9P-HE3_A08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZD27B3V9P-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 BZD27B3V9P-HE3_A08?
For technical support, including BZD27B3V9P-HE3_A08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZD27B3V9P-HE3_A08 requirements.
6.How does Aetrix verify that BZD27B3V9P-HE3_A08 is sourced from the original manufacturer or authorized distributors?
All BZD27B3V9P-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 BZD27B3V9P-HE3_A08 meets industry standards.
7.What is the process for return or replacement of BZD27B3V9P-HE3_A08?
All BZD27B3V9P-HE3_A08 units undergo pre-shipment inspection (PSI). If there is an issue with BZD27B3V9P-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 BZD27B3V9P-HE3_A08 part is unused and in its original packaging.
Return procedure for BZD27B3V9P-HE3_A08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZD27B3V9P-HE3_A08 Tags
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