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Vishay General Semiconductor - Diodes Division SMBJ15AHE3/5B
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- Part No.:
- SMBJ15AHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ15AHE3/5B.pdf
- Description:
- TVS DIODE 15VWM 24.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,900
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Product details
Overview
SMBJ15AHE3/5B from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on power and signal lines. It features a 15 V stand-off voltage (VWM), 24.4 V maximum clamping voltage (VC) at 24.6 A peak pulse current (IPPM), and 600 W peak pulse power (10/1000 µs waveform), making it suitable for protecting MOSFETs, ICs, and sensor interfaces in industrial power supplies.
For engineers reviewing the SMBJ15AHE3/5B datasheet, SMBJ15AHE3/5B pinout, SMBJ15AHE3/5B application, or SMBJ15AHE3/5B equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification status, thermal resistance (RθJA = 100 °C/W), junction temperature range (–55 to +150 °C), and compliance with UL 497B surge protector classification.
Technical Context
This TVS diode operates as a voltage-clamping protection device triggered by reverse-biased avalanche breakdown above its stand-off voltage. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 µA at VWM), while the low incremental surge resistance enables rapid energy absorption during transient events.
The SMBJ15AHE3/5B is rated for 600 W peak pulse power under standardized 10/1000 µs waveform conditions, with derating above 25 °C ambient per Figure 2. Its 1.0 mA test current (IT) defines a minimum breakdown voltage of 16.7 V and maximum of 18.5 V, ensuring predictable turn-on behavior in overvoltage fault conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 15 V - Maximum continuous reverse operating voltage before clamping begins; sets safe margin below system rail voltage. |
| VBR (min/max) | 16.7 V / 18.5 V - Breakdown voltage range at 1.0 mA test current; guarantees reliable conduction onset across process variation. |
| VC @ IPPM | 24.4 V - Clamped voltage at 24.6 A peak pulse current; determines maximum stress imposed on protected downstream circuitry. |
| PPPM | 600 W - Peak pulse power handling capability with 10/1000 µs waveform; defines transient energy absorption capacity. |
| IPPM | 24.6 A - Maximum non-repetitive peak pulse current; used with VC to calculate worst-case power dissipation during surge. |
| TJ max. | +150 °C - Maximum junction temperature; constrains thermal design and layout for sustained reliability under repeated surges. |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance on standard 0.2" × 0.2" copper pads; informs PCB copper area requirements. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Polarity indicated by cathode band; unidirectional operation only.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point in normal bias; connected to lower-potential side of protected line. | Provides path for forward conduction during fault reversal or miswiring; VF ≤ 3.5 V at 50 A (unidirectional only). |
| Cathode | Reverse-biased terminal during clamping; connected to higher-potential side (e.g., VCC, signal line). | Acts as the controlled avalanche node; band marking identifies this terminal for correct PCB orientation and ESD-safe routing. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and surge endurance-enables use in ADAS and body control modules without additional qualification. |
| 600 W peak pulse power (10/1000 µs) | Supports robust protection against IEC 61000-4-5 Level 3 (1 kV/2 Ω) surges on 12 V/24 V systems without derating. |
| Low clamping ratio (VC/VWM = 1.63) | Minimizes overvoltage overshoot during transients-critical for safeguarding 16 V-rated logic inputs and gate drivers. |
| MSL Level 1 (260 °C peak reflow) | Enables single-pass lead-free reflow assembly without moisture sensitivity concerns or baking requirements. |
| UL 497B recognized (QVGQ2) | Meets safety agency requirements for telecom and industrial surge protectors-reduces certification effort for end equipment. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VBAT and GND to clamp positive-going surges above 15 V. Use Value: Limits voltage seen by downstream DC/DC converters and microcontrollers to ≤24.4 V, preventing latch-up or oxide damage. |
Use Scenario: Shielding analog output lines (e.g., 4–20 mA current loops) from ESD and inductive switching noise. IC Role / Device Role / Timing Role: TVS mounted at connector interface to shunt fast transients before reaching precision op-amps or ADC front-ends. Use Value: Sub-1 ns response time and <1.0 µA leakage preserve signal integrity and offset accuracy in high-impedance sensing paths. |
| Telecom Line Card Surge Protection | Consumer Power Adapter Input Stage |
|
Use Scenario: Safeguarding Ethernet PHY power rails and data lines against lightning-induced surges in outdoor base stations. IC Role / Device Role / Timing Role: Primary clamping device on +3.3 V and +5 V supply rails upstream of LDOs and PHY ICs. Use Value: 600 W rating and 100 °C/W RθJA allow placement on compact PCBs without heatsinks while meeting GR-1089-CORE Level 3 requirements. |
Use Scenario: Secondary-side overvoltage suppression in AC/DC adapters for USB-C PD and smart home devices. IC Role / Device Role / Timing Role: Standoff-rated TVS on 5 V/9 V/12 V output rails to absorb coupling from primary-side MOSFET switching noise. Use Value: 15 V VWM provides ≥20 % margin over nominal 12 V output, avoiding false triggering while maintaining tight clamping at 24.4 V. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15A-E3/5B | Commercial-grade version; lacks AEC-Q101 qualification and halogen-free construction. | Approved for consumer and industrial equipment but not automotive production. | Select when cost sensitivity outweighs automotive qualification requirements and halogen-free mandate. |
| SMBJ15CAHE3/5B | Bidirectional variant with same VWM (15 V) and VC (24.4 V); symmetric clamping in both polarities. | Required for AC-coupled signal lines or differential buses where negative transients occur. | Choose only if bidirectional protection is needed-unidirectional SMBJ15AHE3/5B offers lower capacitance and tighter leakage for DC rails. |
Compared with SMBJ15A-E3/5B, the SMBJ15AHE3/5B adds AEC-Q101 qualification and RoHS/halogen-free compliance without altering electrical specs; versus SMBJ15CAHE3/5B, it trades bidirectional capability for lower leakage and optimized unidirectional clamping performance on DC power domains.
Availability
SMBJ15AHE3/5B is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor systems, and telecom infrastructure requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SMBJ15AHE3/5B 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 General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SMBJ series was developed for high-energy transient suppression in space-constrained surface-mount designs, targeting automotive, industrial, and communications markets where robustness and AEC-Q101 compliance are mandatory.
FAQ
What is the maximum clamping voltage of SMBJ15AHE3/5B at its rated peak pulse current?
The SMBJ15AHE3/5B has a maximum clamping voltage (VC) of 24.4 V at its rated peak pulse current (IPPM) of 24.6 A under the 10/1000 µs waveform condition. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during a surge event. The SMBJ15AHE3/5B maintains this clamping performance across its full operating temperature range.
Is SMBJ15AHE3/5B suitable for automotive applications?
Yes, SMBJ15AHE3/5B is AEC-Q101 qualified and explicitly designated for automotive use with ordering code suffix HE3. It meets stress tests including temperature cycling, high-temperature reverse bias, and surge endurance required for engine control units, body electronics, and ADAS modules. The SMBJ15AHE3/5B also carries UL 497B recognition for surge protector classification in vehicle subsystems.
What is the thermal resistance of SMBJ15AHE3/5B and how does it affect PCB layout?
The SMBJ15AHE3/5B has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes standard SMB footprint and minimal copper; increasing pad area or adding thermal vias reduces RθJA, improving surge repetition capability. For repeated surge duty, the SMBJ15AHE3/5B requires careful thermal management to avoid exceeding +150 °C junction temperature.
How does the leakage current of SMBJ15AHE3/5B compare to other TVS diodes in the SMBJ family?
The SMBJ15AHE3/5B exhibits a maximum reverse leakage current (ID) of 1.0 µA at its 15 V stand-off voltage (VWM), consistent with all SMBJ devices rated at VWM ≥ 10 V. This low leakage preserves power efficiency in always-on circuits and avoids loading sensitive analog references. Unlike lower-voltage SMBJ variants (e.g., SMBJ5.0A), the SMBJ15AHE3/5B does not require doubled ID limits per datasheet Note (3).
What packaging format is used for SMBJ15AHE3/5B and what are its reel specifications?
SMBJ15AHE3/5B is supplied in 13-inch diameter plastic tape and reel packaging with a base quantity of 3200 units per reel (ordering code suffix /5B). The tape conforms to EIA-481 standards, and the device is MSL Level 1 rated for peak reflow temperatures up to 260 °C. This packaging supports high-speed automated placement and eliminates moisture sensitivity concerns during SMT assembly.
SMBJ15AHE3/5B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 15V
- Voltage - Breakdown (Min):
- 16.7V
- Voltage - Clamping (Max) @ Ipp:
- 24.4V
- Current - Peak Pulse (10/1000µs):
- 24.6A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SMBJ15AHE3/5B FAQ
1.How can I place an order for SMBJ15AHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ15AHE3/5B 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 SMBJ15AHE3/5B reliable?
The price and inventory of SMBJ15AHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ15AHE3/5B is usually 5 days.
3.What payment methods are accepted for SMBJ15AHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ15AHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ15AHE3/5B?
SMBJ15AHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ15AHE3/5B 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 SMBJ15AHE3/5B?
For technical support, including SMBJ15AHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ15AHE3/5B requirements.
6.How does Aetrix verify that SMBJ15AHE3/5B is sourced from the original manufacturer or authorized distributors?
All SMBJ15AHE3/5B 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 SMBJ15AHE3/5B meets industry standards.
7.What is the process for return or replacement of SMBJ15AHE3/5B?
All SMBJ15AHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ15AHE3/5B, 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 SMBJ15AHE3/5B part is unused and in its original packaging.
Return procedure for SMBJ15AHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ15AHE3/5B Tags
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