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Vishay BZD27B39P-HE3_A08
- Part No.:
- BZD27B39P-HE3_A08
- Manufacturer:
- Vishay
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
BZD27B39P-HE3_A08.pdf
- Description:
- ZENER DIODE SMF DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,668
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Product details
Overview
BZD27B39P-HE3_A08 from Vishay Semiconductors is a surface-mount, AEC-Q101 qualified Zener diode with nominal 39 V breakdown voltage (±2 % tolerance), 10 mA test current, 33 V clamping voltage at 5 A surge, and 150 W non-repetitive peak surge power rating. It serves as a precision voltage reference and transient overvoltage protector in automotive power supply rails and industrial sensor interfaces.
For engineers reviewing the BZD27B39P-HE3_A08 datasheet, BZD27B39P-HE3_A08 pinout, BZD27B39P-HE3_A08 application, or BZD27B39P-HE3_A08 equivalent, key selection criteria include its ±2 % VZ tolerance, 0.06 to 0.11 %/°C temperature coefficient, SOD-123W-compatible DO-219AB package, 175 °C max junction temperature, and AEC-Q101 qualification for automotive under-hood use.
Technical Context
This unidirectional Zener diode operates in reverse-bias breakdown mode to regulate or clamp voltage. Its low dynamic resistance (21 Ω typical at 10 mA) and tight 38.22–39.78 V Zener range ensure stable reference performance across temperature and current variation.
Designed for surge protection per IEC 60-1 (10/1000 μs waveform), it delivers 150 W peak surge power with 52.5 V clamping voltage at 5 A, while maintaining low leakage (<5 μA at 33 V) and high ESD robustness (>8 kV HBM).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 38.22–39.78 V (±2 % tolerance at 10 mA; enables precise voltage reference within 0.78 V window) |
| Test Current (IZT) | 10 mA (standard bias point for VZ specification; ensures stable regulation in low-power reference circuits) |
| Clamping Voltage (VC) | 52.5 V at 5 A (limits transient voltage during 10/1000 μs surges; protects downstream ICs from overvoltage damage) |
| Peak Surge Power (PRSM) | 150 W (supports IEC 61000-4-5 level 4 surge immunity testing in automotive ECUs) |
| Temperature Coefficient (αVZ) | 0.06 to 0.11 %/°C (low drift enables stable operation from −65 °C to +175 °C in engine control units) |
| Junction Temperature (Tj) | 175 °C maximum (enables under-hood placement without derating in high-ambient environments) |
| Package | DO-219AB (SMD, 2.7 × 1.9 mm footprint; compatible with SOD-123W layout; MSL Level 1, 260 °C reflow) |
Pinout & Package
DO-219AB package: low-profile surface-mount case with cathode band marking; 2.7 mm length × 1.9 mm width × 1.08 mm height; 3 mm × 3 mm Cu pad thermal land recommended per datasheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / surge return path | Connected to ground or low-impedance return in clamping configuration; handles full surge current during transients |
| Cathode | Zener breakdown terminal / regulated output node | Connected to protected rail; maintains 39 V reference or clamps excursions above 52.5 V during surges |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control, body electronics, and ADAS sensors |
| ±2 % Zener voltage tolerance | Reduces need for post-production trimming in precision reference designs |
| 150 W 10/1000 μs surge rating | Meets ISO 7637-2 pulse 5a/b requirements for 12 V vehicle systems |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking preconditioning |
| Low 21 Ω dynamic resistance | Minimizes voltage shift under load variation in feedback networks and reference dividers |
Applications
| Automotive Engine Control Unit (ECU) | Industrial PLC Analog Input Module |
|---|---|
Use Scenario: Protects microcontroller ADC reference rail from load-dump transients on 12 V battery line. IC Role / Device Role / Timing Role: Unidirectional Zener clamp placed between VREF and ground; conducts only during >39 V overvoltage events. Use Value: Limits voltage to ≤52.5 V at 5 A surge, preventing ADC saturation and latch-up in automotive-grade MCUs. | Use Scenario: Stabilizes 24 V fieldbus power rail feeding isolated analog front-end circuitry. IC Role / Device Role / Timing Role: Precision 39 V shunt reference providing stable bias for op-amp gain-setting resistors. Use Value: ±2 % VZ tolerance and 0.06 %/°C TC enable <0.5 % total reference error over −40 to +85 °C operating range. |
| Automotive Body Control Module (BCM) | Medical Infusion Pump Power Supply |
Use Scenario: Suppresses inductive kickback from door lock actuator solenoids connected to 12 V supply. IC Role / Device Role / Timing Role: Transient voltage suppressor mounted across solenoid coil terminals. Use Value: 150 W surge rating absorbs 100 mJ pulses without degradation, extending solenoid driver MOSFET lifetime. | Use Scenario: Guards isolated DC-DC converter feedback loop against ESD events during cable insertion. IC Role / Device Role / Timing Role: Low-leakage (<5 μA at 33 V) Zener referenced to secondary-side ground. Use Value: Prevents false triggering of overvoltage protection while maintaining <10 ppm/h long-term stability for dosage accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ39A-E3/52 | TVS diode (not Zener); 39 V standoff, 64.5 V clamping at 10.5 A; higher capacitance (150 pF) | Designed for fast ESD/EMP suppression, not precision regulation | Select when primary need is sub-ns response to ESD, not stable DC reference |
| BZX84-C39-HE3-08 | SOT-23 package; ±5 % VZ tolerance; 300 mW PD; no AEC-Q101 qualification | Limited to low-power consumer electronics; unsuitable for automotive under-hood | Choose only for cost-sensitive, non-automotive, low-surge environments |
Compared with SMBJ39A-E3/52 and BZX84-C39-HE3-08, the BZD27B39P-HE3_A08 uniquely combines AEC-Q101 qualification, ±2 % tolerance, 150 W surge capability, and DO-219AB thermal performance-making it the only option qualified for high-reliability automotive voltage reference and clamping where both precision and ruggedness are required.
Availability
BZD27B39P-HE3_A08 is available at Aetrix Electronics and suitable for automotive ECU design, industrial PLC analog input conditioning, and medical infusion pump power supervision requiring stable component supply and long-term lifecycle assurance.
Supply support for BZD27B39P-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 high-stability, high-surge Zener applications in harsh environments-designed specifically for automotive under-hood voltage regulation and industrial transient protection where AEC-Q101 compliance and 175 °C operation are mandatory.
FAQ
What is the Zener voltage tolerance of BZD27B39P-HE3_A08?
The BZD27B39P-HE3_A08 has a Zener voltage tolerance of ±2 %, specified as 38.22 V minimum to 39.78 V maximum at 10 mA test current. This tight tolerance is confirmed in the Vishay BZD27B Series datasheet (Rev. 2.1, Dec. 2022), Table 2, and supports precision voltage reference applications without external trimming. The BZD27B39P-HE3_A08 achieves this via process-controlled silicon planar junction fabrication.
Is BZD27B39P-HE3_A08 qualified for automotive applications?
Yes, BZD27B39P-HE3_A08 is AEC-Q101 qualified, as indicated by the "-HE3" suffix per Vishay's ordering nomenclature. It meets stress test requirements including high-temperature operating life, temperature cycling, and ESD (HBM >8 kV, MM >800 V). The BZD27B39P-HE3_A08 is rated for −65 °C to +175 °C operation and is approved for under-hood engine control and body electronics use.
What is the maximum clamping voltage of BZD27B39P-HE3_A08 during surge events?
The BZD27B39P-HE3_A08 clamps to 52.5 V at 5 A for a 10/1000 μs waveform, per Table 3 in the Vishay datasheet. This value represents the peak voltage seen across the device during standardized surge testing and defines the upper limit of protection for downstream circuitry. The BZD27B39P-HE3_A08 maintains this clamping performance up to its 150 W peak surge rating.
Which package does BZD27B39P-HE3_A08 use, and is it compatible with SOD-123W layouts?
BZD27B39P-HE3_A08 uses the DO-219AB (SMF) package, which Vishay explicitly states is compatible with SOD-123W, SOD-123F, and SOD-123FL footprints. Its dimensions are 2.7 × 1.9 × 1.08 mm, and the datasheet provides recommended 3 mm × 3 mm Cu pad land patterns. The BZD27B39P-HE3_A08 can be placed on existing SOD-123W PCBs without layout revision.
What is the thermal resistance of BZD27B39P-HE3_A08, and how does it affect power dissipation?
The BZD27B39P-HE3_A08 has RthJA = 180 K/W (on 3 mm × 3 mm Cu pads) and RthJL = 30 K/W. At TA = 30 °C, its continuous power dissipation is 800 mW; derating begins above that ambient. These values directly determine safe operating area: for example, at 70 °C ambient, max continuous power drops to ~530 mW. The BZD27B39P-HE3_A08's low RthJL supports high-pulse-survivability via efficient lead heat sinking.
BZD27B39P-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):
- 33V (Max)
- Voltage - Breakdown (Min):
- 38.22V
- Voltage - Clamping (Max) @ Ipp:
- 52.5V
- Current - Peak Pulse (10/1000µs):
- 2.8A
- 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)
BZD27B39P-HE3_A08 FAQ
1.How can I place an order for BZD27B39P-HE3_A08 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZD27B39P-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 BZD27B39P-HE3_A08 reliable?
The price and inventory of BZD27B39P-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 BZD27B39P-HE3_A08 is usually 5 days.
3.What payment methods are accepted for BZD27B39P-HE3_A08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZD27B39P-HE3_A08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZD27B39P-HE3_A08?
BZD27B39P-HE3_A08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZD27B39P-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 BZD27B39P-HE3_A08?
For technical support, including BZD27B39P-HE3_A08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZD27B39P-HE3_A08 requirements.
6.How does Aetrix verify that BZD27B39P-HE3_A08 is sourced from the original manufacturer or authorized distributors?
All BZD27B39P-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 BZD27B39P-HE3_A08 meets industry standards.
7.What is the process for return or replacement of BZD27B39P-HE3_A08?
All BZD27B39P-HE3_A08 units undergo pre-shipment inspection (PSI). If there is an issue with BZD27B39P-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 BZD27B39P-HE3_A08 part is unused and in its original packaging.
Return procedure for BZD27B39P-HE3_A08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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