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Vishay BZD27B11P-HE3_A18
- Part No.:
- BZD27B11P-HE3_A18
- Manufacturer:
- Vishay
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
BZD27B11P-HE3_A18.pdf
- Description:
- ZENER DIODE SMF DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,847
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Product details
Overview
BZD27B11P-HE3_A18 from Vishay Semiconductors is a surface-mount, AEC-Q101 qualified Zener diode with nominal breakdown voltage of 11 V, ±2 % tolerance, 50 mA test current, and 150 W non-repetitive peak surge power rating. It operates as a precision voltage reference and transient voltage suppressor in automotive power rail protection circuits.
For engineers reviewing the BZD27B11P-HE3_A18 datasheet, BZD27B11P-HE3_A18 pinout, BZD27B11P-HE3_A18 application, or BZD27B11P-HE3_A18 equivalent, key selection criteria include its 11 V Zener voltage, 9.1 V clamping voltage at 9.6 A, 0.05 to 0.1 %/°C temperature coefficient, and DO-219AB (SMF) package compatibility with high-reliability automotive PCB layouts.
Technical Context
This unidirectional Zener diode functions as both a stable voltage regulator and transient voltage suppressor. Its design supports dual-mode operation: regulated DC biasing at 50 mA test current and high-energy surge clamping per IEC 60-1 10/1000 μs waveform.
It features low dynamic resistance (8.2 Ω typical at 50 mA), tight voltage tolerance (±2 %), and AEC-Q101 qualification for automotive under-hood applications. Thermal performance is defined by RthJA = 180 K/W on 3 mm × 3 mm Cu pads and RthJL = 30 K/W, enabling robust thermal management in compact layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 10.78 V min / 11.0 V nom / 11.22 V max - ensures precise 11 V regulation within ±2 % across production lot |
| Test Current (IZT) | 50 mA - standard bias point for specification compliance and stable operating point selection |
| Clamping Voltage (VC) | 15.2 V at 9.6 A - defines maximum voltage seen by protected circuit during 10/1000 μs surge event |
| Surge Power (PRSM) | 150 W - enables suppression of high-energy transients without failure per IEC 60-1 |
| Temperature Coefficient (αVZ) | +0.05 %/°C to +0.10 %/°C - quantifies positive drift with junction temperature, critical for thermal stability in engine control units |
| Junction Temp Limit (Tj) | 175 °C - supports continuous operation in high-ambient automotive environments |
| Package | DO-219AB (SMF) - low-profile SMD outline with 2.7–2.9 mm length, 1.7–1.9 mm width, 0.8–1.08 mm height |
Pinout & Package
DO-219AB (SMF) package: surface-mount, single-diode, cathode-marked end, compatible with reflow soldering (peak 260 °C). Dimensions: 2.9 mm × 1.9 mm × 1.08 mm; MSL level 1; JESD 201 Class 2 whisker tested.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential node in reverse-biased Zener configuration; carries forward current up to 0.2 A (VF ≤ 1.2 V) |
| Cathode | Zener breakdown terminal | Marked end; connected to higher-potential node; defines polarity for voltage regulation and transient clamping |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive under-hood use including temperature cycling, humidity, and mechanical shock per AEC standard |
| ±2 % VZ tolerance | Enables tighter system-level voltage margining vs. ±5 % parts, reducing need for post-regulation filtering |
| 150 W 10/1000 μs surge rating | Meets ISO 7637-2 Pulse 1/2a/3a requirements for 12 V automotive systems without external series impedance |
| MSL Level 1 handling | Allows unlimited floor life before reflow; eliminates bake-out requirement and simplifies SMT line logistics |
| Low leakage (≤5 μA at 9.1 V) | Minimizes standby power loss in always-on vehicle modules such as body controllers and telematics units |
Applications
| Engine Control Unit (ECU) Power Rail Protection | Automotive Infotainment Power Supply |
|---|---|
Use Scenario: Protects 12 V microcontroller supply against load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Unidirectional transient voltage suppressor placed directly across input rail, clamping surges to ≤15.2 V. Use Value: Prevents MCU brownout or latch-up during ISO 7637-2 Pulse 5a events up to 60 V/100 ms without derating. | Use Scenario: Stabilizes 5 V USB-powered audio amplifier supply against coupling noise from display backlight drivers. IC Role / Device Role / Timing Role: Precision Zener reference providing 11 V bias to LDO error amplifier feedback network. Use Value: Maintains ±0.22 V regulation accuracy over -40 to +125 °C due to low αVZ and tight tolerance. |
| Body Control Module (BCM) CAN Transceiver Bias | ADAS Camera Module ESD Protection |
Use Scenario: Supplies stable bias voltage to isolated CAN FD transceiver VIO pin in 24 V commercial vehicle BCM. IC Role / Device Role / Timing Role: Dual-function device: Zener regulator for bias generation and secondary surge clamp for bus-side transients. Use Value: Eliminates need for separate Zener + TVS stack; reduces BOM count while meeting ISO 11898-2 EMC immunity targets. | Use Scenario: Protects MIPI CSI-2 data lines from ESD events during camera module assembly and field service. IC Role / Device Role / Timing Role: Low-capacitance (<2.5 pF typical at 0 V) unidirectional clamp placed at connector interface. Use Value: Preserves signal integrity up to 2.5 Gbps with <0.3 dB insertion loss, verified per IEC 61000-4-2 Level 4 (±15 kV contact). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ11A-E3/52 | TVS diode (not Zener); 11 V standoff, 18.2 V clamping at 10.4 A; 600 W peak power | Optimized for fast transient suppression only; no DC regulation capability | Select when primary need is high-power surge clamping without DC bias function |
| BZX84-C11LT1G | SOT-23 package; ±5 % tolerance; 10 mA test current; 300 mW PD; not AEC-Q101 qualified | Limited to low-power consumer electronics; unsuitable for automotive under-hood thermal or reliability requirements | Select only for cost-sensitive, non-automotive applications with relaxed voltage tolerance and power needs |
Compared with SMBJ11A-E3/52 and BZX84-C11LT1G, BZD27B11P-HE3_A18 uniquely combines AEC-Q101 qualification, ±2 % VZ tolerance, and 150 W surge rating in a low-profile DO-219AB package-enabling single-device solutions for automotive power rail regulation and transient suppression where space, reliability, and precision are jointly constrained.
Availability
BZD27B11P-HE3_A18 is available at Aetrix Electronics and suitable for automotive engine control units, infotainment power supplies, and ADAS camera module protection requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for BZD27B11P-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 designs and manufactures discrete semiconductors including diodes, MOSFETs, and optoelectronics, with emphasis on reliability, power efficiency, and automotive-grade qualification.
The BZD27B Series belongs to Vishay's eSMP® Zener portfolio, engineered specifically for high-stability, high-surge automotive voltage regulation and transient suppression where AEC-Q101 compliance and tight parametric control are mandatory.
FAQ
What is the Zener voltage tolerance of BZD27B11P-HE3_A18?
The BZD27B11P-HE3_A18 has a Zener voltage tolerance of ±2 %, specified as 10.78 V minimum to 11.22 V maximum at 50 mA test current. This tight tolerance is confirmed in the Vishay BZD27B Series datasheet (Rev. 2.1, Dec. 2022) and enables precise voltage reference design in automotive control modules where regulation accuracy directly impacts sensor signal conditioning and ADC reference stability. The BZD27B11P-HE3_A18 achieves this via silicon planar process control and 100 % parametric screening.
Is BZD27B11P-HE3_A18 qualified for automotive applications?
Yes, BZD27B11P-HE3_A18 is AEC-Q101 qualified, as indicated by the "-HE3" suffix per Vishay's ordering nomenclature. It meets stress test requirements including temperature cycling, high-temperature operating life, and mechanical shock, and is rated for operation from -65 °C to +175 °C junction temperature. This qualification makes BZD27B11P-HE3_A18 suitable for under-hood engine control units, transmission control modules, and other automotive systems requiring validated reliability. The BZD27B11P-HE3_A18 also passes JESD 201 Class 2 whisker testing and MSL Level 1 handling.
What is the clamping voltage of BZD27B11P-HE3_A18 during surge events?
The clamping voltage (VC) of BZD27B11P-HE3_A18 is 15.2 V at 9.6 A for a 10/1000 μs waveform, per the Vishay BZD27B Series datasheet (page 3, Electrical Characteristics table). This value defines the maximum voltage imposed on protected circuitry during standardized surge events such as ISO 7637-2 Pulse 1 and Pulse 5a. The BZD27B11P-HE3_A18 achieves this clamping performance while maintaining low dynamic resistance (8.2 Ω typical), ensuring predictable and repeatable transient response across temperature and lifetime.
Which package does BZD27B11P-HE3_A18 use, and what are its key dimensions?
BZD27B11P-HE3_A18 uses the DO-219AB (SMF) package, a low-profile surface-mount outline measuring 2.9 mm in length, 1.9 mm in width, and 1.08 mm in height. Per Vishay's package drawing S8-V-3915.01-001, it features a cathode band marking, 0.85 mm lead width, and 0.35 mm lead thickness. The BZD27B11P-HE3_A18 package is MSL Level 1 compliant, wave and reflow solderable (peak 260 °C), and compatible with standard 8 mm tape-and-reel handling for automated assembly.
Does BZD27B11P-HE3_A18 support bidirectional transient suppression?
No, BZD27B11P-HE3_A18 is a unidirectional Zener diode, designed for reverse-bias operation only. Its electrical characteristics-including Zener voltage, clamping voltage, and surge ratings-are specified for operation with cathode biased positively relative to anode. For bidirectional protection (e.g., AC line or differential data bus), two BZD27B11P-HE3_A18 devices would be required in series opposition, or a dedicated bidirectional TVS like SMAJ11A should be selected. The BZD27B11P-HE3_A18 datasheet explicitly states "Polarity: Uni-directional" in the Primary Characteristics table.
BZD27B11P-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):
- 9.1V (Max)
- Voltage - Breakdown (Min):
- 10.78V
- Voltage - Clamping (Max) @ Ipp:
- 15.2V
- Current - Peak Pulse (10/1000µs):
- 9.6A
- 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)
BZD27B11P-HE3_A18 FAQ
1.How can I place an order for BZD27B11P-HE3_A18 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZD27B11P-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 BZD27B11P-HE3_A18 reliable?
The price and inventory of BZD27B11P-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 BZD27B11P-HE3_A18 is usually 5 days.
3.What payment methods are accepted for BZD27B11P-HE3_A18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZD27B11P-HE3_A18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZD27B11P-HE3_A18?
BZD27B11P-HE3_A18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZD27B11P-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 BZD27B11P-HE3_A18?
For technical support, including BZD27B11P-HE3_A18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZD27B11P-HE3_A18 requirements.
6.How does Aetrix verify that BZD27B11P-HE3_A18 is sourced from the original manufacturer or authorized distributors?
All BZD27B11P-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 BZD27B11P-HE3_A18 meets industry standards.
7.What is the process for return or replacement of BZD27B11P-HE3_A18?
All BZD27B11P-HE3_A18 units undergo pre-shipment inspection (PSI). If there is an issue with BZD27B11P-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 BZD27B11P-HE3_A18 part is unused and in its original packaging.
Return procedure for BZD27B11P-HE3_A18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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