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Vishay BZD27B30P-HE3_A18
- Part No.:
- BZD27B30P-HE3_A18
- Manufacturer:
- Vishay
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
BZD27B30P-HE3_A18.pdf
- Description:
- ZENER DIODE SMF DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,586
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Product details
Overview
BZD27B30P-HE3_A18 from Vishay Semiconductors is a surface-mount, AEC-Q101 qualified Zener diode with nominal zener voltage 30 V (±2 %), 25 mA test current, 40.4 V clamping voltage at 5 A surge, 150 W peak surge power rating, and DO-219AB (SMF) package for automotive-grade overvoltage protection in power supply rails and ECU input stages.
For engineers reviewing the BZD27B30P-HE3_A18 datasheet, BZD27B30P-HE3_A18 pinout, BZD27B30P-HE3_A18 application, or BZD27B30P-HE3_A18 equivalent, key selection criteria include its ±2 % VZ tolerance, 175 °C max junction temperature, MSL level 1 moisture sensitivity, and AEC-Q101 qualification for under-hood automotive use.
Technical Context
This unidirectional Zener diode operates as a precision voltage reference and transient voltage suppressor in DC bias networks and surge protection circuits. It delivers stable regulation at 30 V with 0.06 to 0.11 %/°C temperature coefficient and supports both steady-state regulation (IZT = 25 mA) and high-energy pulse suppression (10/1000 μs waveform, PRSM = 150 W).
The device uses silicon planar construction and is housed in an eSMP® SMF (DO-219AB) package with low thermal resistance (RthJL = 30 K/W), enabling reliable operation up to 175 °C junction temperature and compatibility with standard reflow soldering profiles peaking at 260 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 29.4 V min / 30 V nom / 30.6 V max - tight ±2 % tolerance enables accurate voltage clamping in safety-critical automotive circuits |
| Test Current (IZT) | 25 mA - defines operating point for specified VZ and dynamic resistance; used for stable DC regulation |
| Clamping Voltage (VC) | 40.4 V at IRSM = 5 A - limits transient voltage during 10/1000 μs surges, protecting downstream ICs |
| Peak Surge Power (PRSM) | 150 W - withstands high-energy transients per IEC 61000-4-5 without degradation |
| Junction Temperature (Tj) | −65 °C to +175 °C - supports under-hood automotive environments and industrial high-temp applications |
| Package | DO-219AB (SMF) - low-profile SMD outline (2.9 × 1.4 × 1.08 mm) with MSL level 1 and AEC-Q101 qualification |
| ESD Rating | HBM > 8 kV, MM > 800 V - robust handling in automated assembly and field-replaceable modules |
Pinout & Package
DO-219AB (SMF) package: 2-terminal surface-mount device with cathode marked by band on top surface; footprint requires 1.3 × 1.3 mm pad area per terminal and 2.9 mm center-to-center spacing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry during forward conduction; reference node for reverse-bias operation | Connected to lower-potential rail (e.g., ground or return path) when used as shunt regulator or TVS |
| Cathode | Current exit during forward conduction; zener breakdown terminal during reverse bias | Connected to protected line (e.g., 30 V rail); clamps voltage above 30 V by conducting surge current to anode |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive electronics per stress test requirements including temperature cycling, HTRB, and ESD - enables use in engine control units and ADAS sensors |
| ±2 % VZ tolerance | Reduces design margin needed for voltage thresholding, allowing tighter system-level tolerances in battery monitoring and power sequencing |
| 150 W peak surge rating (10/1000 μs) | Handles ISO 7637-2 Pulse 5a/b transients without failure, eliminating need for additional series impedance in many 12 V/24 V systems |
| MSL level 1, 260 °C reflow compatible | Supports single-pass lead-free reflow assembly without baking or special handling, reducing manufacturing cost and risk |
| Low dynamic impedance (22 Ω typ. at 25 mA) | Minimizes voltage deviation under varying load current, improving regulation stability in feedback-sensing applications |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Protecting 30 V supply lines in engine control modules against load dump and alternator transients. IC Role / Device Role / Timing Role: Shunt-type transient voltage suppressor placed across input rail to clamp surges above 30 V. Use Value: Withstands 150 W 10/1000 μs surges and operates up to 175 °C, meeting ISO 16750-2 requirements without derating. | Use Scenario: Stabilizing reference voltage for 24 V industrial analog sensor interfaces subject to EFT bursts. IC Role / Device Role / Timing Role: Precision Zener reference providing 30 V bias to op-amp gain stages and ADC drivers. Use Value: ±2 % VZ tolerance and 0.06–0.11 %/°C TC ensure <0.5 % total error over −40 to +125 °C ambient range. |
| Telecom DC Power Input Stage | Renewable Energy Charge Controller |
Use Scenario: Overvoltage protection on 24–30 V DC inputs of base station remote radio units exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Primary clamping device in multi-stage protection circuit, absorbing bulk surge energy before downstream TVS arrays. Use Value: 40.4 V clamping at 5 A ensures MOSFET gate drivers and PMICs remain below absolute maximum ratings during fast transients. | Use Scenario: Voltage regulation and surge suppression in solar charge controllers interfacing 30 V PV strings to 24 V battery banks. IC Role / Device Role / Timing Role: Zener reference for PWM duty-cycle control and shunt protector for open-circuit overvoltage events. Use Value: AEC-Q101 qualification and 175 °C Tj rating support extended outdoor deployment in desert climates with minimal thermal derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ30A | TVS diode (not Zener); higher clamping ratio (VC/VBR ≈ 1.45 vs. 1.35), 600 W peak power, bidirectional option available | Designed for high-energy surge suppression only; lacks precision DC regulation capability | Select when primary need is transient immunity, not voltage reference stability |
| BZX84-C30 | SOT-23 package; ±5 % VZ tolerance; 300 mW Ptot; no AEC-Q101 or surge rating spec | Intended for low-power signal-level regulation, not automotive power rail protection | Select only for non-automotive, low-current (<10 mA), non-surge environments |
Compared with SMBJ30A and BZX84-C30, the BZD27B30P-HE3_A18 uniquely combines AEC-Q101 qualification, ±2 % VZ tolerance, and 150 W surge rating in a miniature DO-219AB package-making it the only choice for automotive-grade 30 V reference + protection in space-constrained ECUs.
Availability
BZD27B30P-HE3_A18 is available at Aetrix Electronics and suitable for automotive power management, industrial sensor interfaces, and telecom DC input protection requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for BZD27B30P-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 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 portfolio, 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 of BZD27B30P-HE3_A18?
The BZD27B30P-HE3_A18 has a zener voltage tolerance of ±2 %, with a nominal value of 30 V and a specified range of 29.4 V to 30.6 V at 25 mA test current. This tight tolerance is confirmed in the Vishay datasheet revision 2.1 and enables precise voltage clamping in automotive and industrial applications where regulation accuracy is critical. The BZD27B30P-HE3_A18 achieves this via silicon planar process control and post-package screening.
Is BZD27B30P-HE3_A18 qualified for automotive use?
Yes, BZD27B30P-HE3_A18 is AEC-Q101 qualified, as indicated by the "-HE3" suffix per Vishay's ordering nomenclature. It meets all stress tests including temperature cycling, high-temperature reverse bias (HTRB), and human-body-model ESD (>8 kV). The BZD27B30P-HE3_A18 is rated for operation from −65 °C to +175 °C junction temperature, supporting under-hood automotive applications such as engine control units and body electronics.
What is the clamping voltage of BZD27B30P-HE3_A18 under surge conditions?
The clamping voltage (VC) of BZD27B30P-HE3_A18 is 40.4 V at a peak surge current (IRSM) of 5 A with a 10/1000 μs waveform. This value is measured per IEC 61000-4-5 and appears in the "Electrical Characteristics" table on page 3 of the Vishay datasheet. The BZD27B30P-HE3_A18 maintains this clamping performance while dissipating 150 W peak surge power, protecting downstream components from overvoltage damage.
Which package does BZD27B30P-HE3_A18 use?
BZD27B30P-HE3_A18 uses the DO-219AB (SMF) package - a low-profile surface-mount outline measuring 2.9 × 1.4 × 1.08 mm with cathode identification via marking band. Per Vishay's package drawing S8-V-3915.01-001, it is compatible with standard 8 mm tape-and-reel handling and meets J-STD-020 MSL level 1. The BZD27B30P-HE3_A18's SMF package provides superior thermal performance (RthJL = 30 K/W) versus legacy SOD-123 variants.
Does BZD27B30P-HE3_A18 support lead-free reflow soldering?
Yes, BZD27B30P-HE3_A18 is fully compatible with lead-free reflow soldering, with a maximum peak temperature rating of 260 °C per J-STD-020. It meets MSL level 1 and requires no pre-baking prior to assembly. The BZD27B30P-HE3_A18's eSMP® construction and RoHS-compliant materials ensure reliability through standard Pb-free reflow profiles, including those defined by IPC-J-STD-020 for Class 3 electronics.
BZD27B30P-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):
- 24V (Max)
- Voltage - Breakdown (Min):
- 29.4V
- Voltage - Clamping (Max) @ Ipp:
- 40.4V
- Current - Peak Pulse (10/1000µs):
- 3.6A
- 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)
BZD27B30P-HE3_A18 FAQ
1.How can I place an order for BZD27B30P-HE3_A18 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZD27B30P-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 BZD27B30P-HE3_A18 reliable?
The price and inventory of BZD27B30P-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 BZD27B30P-HE3_A18 is usually 5 days.
3.What payment methods are accepted for BZD27B30P-HE3_A18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZD27B30P-HE3_A18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZD27B30P-HE3_A18?
BZD27B30P-HE3_A18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZD27B30P-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 BZD27B30P-HE3_A18?
For technical support, including BZD27B30P-HE3_A18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZD27B30P-HE3_A18 requirements.
6.How does Aetrix verify that BZD27B30P-HE3_A18 is sourced from the original manufacturer or authorized distributors?
All BZD27B30P-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 BZD27B30P-HE3_A18 meets industry standards.
7.What is the process for return or replacement of BZD27B30P-HE3_A18?
All BZD27B30P-HE3_A18 units undergo pre-shipment inspection (PSI). If there is an issue with BZD27B30P-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 BZD27B30P-HE3_A18 part is unused and in its original packaging.
Return procedure for BZD27B30P-HE3_A18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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