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Vishay General Semiconductor - Diodes Division SMBJ15AHE3_B/H
- Part No.:
- SMBJ15AHE3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ15AHE3_B/H.pdf
- Description:
- 600W,15V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:2,122
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Product details
Overview
SMBJ15AHE3_B/H 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), 600 W peak pulse power (10/1000 µs), and AEC-Q101 qualification for automotive-grade reliability - used to protect MOSFETs, ICs, and sensor interfaces against inductive switching surges.
For engineers reviewing the SMBJ15AHE3_B/H datasheet, SMBJ15AHE3_B/H pinout, SMBJ15AHE3_B/H application, or SMBJ15AHE3_B/H equivalent, key selection criteria include unidirectional polarity, 1.0 µA max reverse leakage at 15 V, 16.7–18.5 V breakdown range (IT = 1 mA), thermal resistance of 100 °C/W (junction-to-ambient), and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a clamping device in parallel with protected circuitry, conducting only when transient voltage exceeds its breakdown threshold. Its glass-passivated junction ensures stable avalanche behavior, low incremental surge resistance, and fast response time (<1 ns), enabling effective suppression of ESD, lightning-induced surges, and inductive kickback.
The SMBJ15AHE3_B/H is rated for 150 °C maximum junction temperature and derates linearly above 25 °C ambient per Figure 2. It meets MSL Level 1 per J-STD-020 (peak reflow 260 °C), has matte tin-plated leads compliant with J-STD-002 and JESD 22-B102, and carries AEC-Q101 qualification for automotive underhood and body electronics applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 15 V - Maximum continuous reverse operating voltage before conduction begins; defines safe DC/AC working limit. |
| VBR min/max | 16.7 V / 18.5 V at IT = 1 mA - Confirmed breakdown range ensures reliable turn-on margin above VWM. |
| VC @ IPPM | 24.4 V at 24.6 A (10/1000 µs) - Clamping voltage seen by protected circuit during worst-case surge; limits stress on downstream components. |
| PPPM | 600 W - Peak pulse power handling capability with standard 10/1000 µs waveform; supports repetitive surge duty cycle ≤ 0.01 %. |
| IPPM | 24.6 A - Peak surge current the device safely clamps without failure; derived from PPPM/VC ratio. |
| ID @ VWM | 1.0 µA max - Reverse leakage at rated stand-off voltage; ensures minimal quiescent power loss and signal integrity. |
| TJ max | 150 °C - Maximum junction temperature rating; enables operation in under-hood automotive environments. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with cathode band marking. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); terminals are matte tin-plated for solderability per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction | Connected to ground or lower-potential node in unidirectional TVS configuration; enables clamping to reference rail. |
| Cathode | Current exit terminal during forward conduction; marked with band | Connected to protected line (e.g., 12 V supply or signal trace); avalanche conduction occurs when cathode-to-anode voltage exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, body electronics, and ADAS sensors - supports long-term reliability under thermal cycling and vibration. |
| 600 W peak pulse power (10/1000 µs) | Handles high-energy transients from load dump or relay coil de-energization without degradation - suitable for 12 V/24 V vehicle systems. |
| Low clamping ratio (VC/VBR ≈ 1.46) | Minimizes overvoltage exposure to protected ICs - e.g., clamps 24.4 V at 24.6 A while maintaining 16.7 V nominal breakdown. |
| MSL Level 1, 260 °C peak reflow | Enables single-pass lead-free reflow assembly without moisture-related damage - eliminates pre-bake requirement for production lines. |
| Glass passivated junction | Ensures stable, repeatable avalanche characteristics across temperature and lifetime - critical for consistent clamping performance in harsh environments. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V power inputs in automotive ECUs against ISO 7637-2 Pulse 1 (inductive switch-off) and Pulse 2a (load dump). IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and input filter capacitor to clamp transients before they reach LDOs or microcontrollers. Use Value: Limits voltage excursion to ≤24.4 V during 24.6 A surge, preventing latch-up or gate oxide damage in downstream PMICs and MCUs. |
Use Scenario: Shielding analog outputs of pressure or temperature sensors in factory automation PLC modules from field-wiring induced surges. IC Role / Device Role / Timing Role: TVS connected across sensor output and ground to suppress fast-rising transients from nearby motor drives or solenoid actuation. Use Value: Maintains signal integrity with <1.0 µA leakage at 15 V, ensuring sub-mV offset error in 16-bit ADC front-ends. |
| Consumer Power Adapter Input Stage | Telecom Line Card Surge Protection |
Use Scenario: Safeguarding primary-side controller ICs in AC-DC adapters subjected to differential-mode surges per IEC 61000-4-5 (Level 3). IC Role / Device Role / Timing Role: Mounted across bulk capacitor input to absorb energy from line-to-line or line-to-ground transients before rectification stage. Use Value: Delivers 600 W pulse handling with 100 °C/W thermal resistance - enables compact layout without heatsinking in space-constrained adapters. |
Use Scenario: Protecting Ethernet PHY interface pins on telecom line cards from lightning-induced surges coupled via RJ45 magnetics. IC Role / Device Role / Timing Role: Placed on each data pair (e.g., TX+/TX−) referenced to chassis ground to clamp common-mode transients. Use Value: Fast <1 ns response and low VC ensure Ethernet signal eye diagram remains intact post-surge - no link renegotiation required. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15AHM3_B/H | Halogen-free, RoHS-compliant variant with identical electrical specs and AEC-Q101 qualification. | No functional difference; selected where halogen-free material compliance is mandated (e.g., EU automotive Tier 1 requirements). | Choose SMBJ15AHM3_B/H when halogen-free bill-of-materials is required; otherwise SMBJ15AHE3_B/H suffices. |
| SMAJ15AHE3/A | Same VWM, VBR, and VC, but in smaller SMA (DO-214AC) package with lower PPPM (400 W) and higher RθJA (140 °C/W). | Limited to lower-energy transients; unsuitable for automotive load dump or industrial 24 V systems requiring 600 W. | Select SMAJ15AHE3/A only for cost-sensitive consumer applications with <400 W surge exposure and adequate board-level cooling. |
Compared with SMBJ15AHE3_B/H, SMBJ15AHM3_B/H offers identical protection performance with halogen-free construction, while SMAJ15AHE3/A trades 33 % lower surge capacity and reduced thermal robustness for smaller footprint - making SMBJ15AHE3_B/H the optimal choice for AEC-Q101-compliant 600 W transient suppression.
Availability
SMBJ15AHE3_B/H is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor module production, and telecom line card manufacturing requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SMBJ15AHE3_B/H 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, efficiency, and application-specific optimization.
The SMBJ series is engineered for high-energy transient suppression in automotive, industrial, and communications infrastructure - delivering robust clamping performance in standardized surface-mount packages with automotive-grade qualification.
FAQ
What is the breakdown voltage range for SMBJ15AHE3_B/H?
The SMBJ15AHE3_B/H has a guaranteed breakdown voltage (VBR) range of 16.7 V to 18.5 V at test current IT = 1 mA, measured per ANSI/IEEE C62.35. This range ensures consistent turn-on behavior above its 15 V stand-off voltage and provides design margin against process variation - critical for predictable clamping in safety-critical automotive circuits.
Is SMBJ15AHE3_B/H suitable for bidirectional transient protection?
No, SMBJ15AHE3_B/H is a unidirectional TVS diode, indicated by the "A" suffix and cathode band marking. For bidirectional protection, Vishay specifies the "CA" suffix (e.g., SMBJ15CA). Using SMBJ15AHE3_B/H on AC or floating signal lines would result in forward conduction during negative half-cycles, potentially damaging the device or circuit.
What does the "HE3_B/H" suffix mean in SMBJ15AHE3_B/H?
The "HE3" denotes RoHS-compliant, AEC-Q101 qualified construction; "B/H" indicates packaging in 7″ tape-and-reel format with 750 units per reel (H = reel size code). This suffix confirms automotive-grade reliability, halogen-free exemption status, and SMT-ready delivery - distinguishing it from commercial-grade E3 or HM3 variants.
How does SMBJ15AHE3_B/H perform under elevated ambient temperatures?
SMBJ15AHE3_B/H derates linearly above 25 °C ambient per Figure 2 in the datasheet: peak pulse power drops to ~450 W at 75 °C and ~300 W at 125 °C. Its 100 °C/W RθJA requires adequate copper pad area (0.2″ × 0.2″ recommended) to maintain junction temperature below 150 °C during repeated surges.
Can SMBJ15AHE3_B/H replace SMAJ15AHE3/A in an existing design?
Direct replacement is not recommended without layout review: SMBJ15AHE3_B/H uses SMB (DO-214AA) package (4.57 mm × 3.94 mm), while SMAJ15AHE3/A uses smaller SMA (DO-214AC) (4.57 mm × 2.79 mm). Though both share 15 V VWM, the SMBJ part delivers 50 % higher pulse power (600 W vs. 400 W) and lower thermal resistance - requiring pad redesign and validation for surge robustness.
SMBJ15AHE3_B/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Bulk
- Product Status:
- Active
- 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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMBJ15AHE3_B/H FAQ
1.How can I place an order for SMBJ15AHE3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ15AHE3_B/H 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_B/H reliable?
The price and inventory of SMBJ15AHE3_B/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ15AHE3_B/H is usually 5 days.
3.What payment methods are accepted for SMBJ15AHE3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ15AHE3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ15AHE3_B/H?
SMBJ15AHE3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ15AHE3_B/H 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_B/H?
For technical support, including SMBJ15AHE3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ15AHE3_B/H requirements.
6.How does Aetrix verify that SMBJ15AHE3_B/H is sourced from the original manufacturer or authorized distributors?
All SMBJ15AHE3_B/H 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_B/H meets industry standards.
7.What is the process for return or replacement of SMBJ15AHE3_B/H?
All SMBJ15AHE3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ15AHE3_B/H, 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_B/H part is unused and in its original packaging.
Return procedure for SMBJ15AHE3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ15AHE3_B/H Tags
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