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Vishay General Semiconductor - Diodes Division SMBJ15AHE3/52
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- Part No.:
- SMBJ15AHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ15AHE3/52.pdf
- Description:
- TVS DIODE 15VWM 24.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,640
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Product details
Overview
SMBJ15AHE3/52 from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in the SMB (DO-214AA) package, designed for clamping inductive switching transients and ESD events 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 MOSFET gates and sensor interfaces in industrial motor drives.
For engineers reviewing the SMBJ15AHE3/52 datasheet, SMBJ15AHE3/52 pinout, SMBJ15AHE3/52 application, or SMBJ15AHE3/52 equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification status, thermal resistance (RθJA = 100 °C/W), and compliance with UL 497B for telecom surge protection.
Technical Context
This TVS diode operates as a voltage-clamping device in series with sensitive downstream components, conducting only when reverse voltage exceeds its breakdown threshold (VBR = 16.7–18.5 V at IT = 1 mA). Its glass-passivated junction ensures stable leakage performance (<1.0 µA at VWM = 15 V) and fast response time (<1 ns).
The device is rated for repetitive 10/1000 µs surge pulses at 0.01% duty cycle and supports peak forward surge current up to 100 A (8.3 ms half-sine), with junction temperature range from –55 °C to +150 °C and MSL Level 1 moisture sensitivity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 15 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 16.7 V / 18.5 V - Breakdown occurs within this range at 1 mA test current, defining turn-on threshold |
| VC @ IPPM | 24.4 V - Clamped voltage seen by protected circuit during 24.6 A transient (10/1000 µs) |
| PPPM | 600 W - Peak transient power dissipation capability under standard surge waveform |
| IPPM | 24.6 A - Maximum non-repetitive surge current the device can safely divert |
| RθJA | 100 °C/W - Thermal resistance from junction to ambient on standard 5.0 mm × 5.0 mm copper pads |
| TJ max | +150 °C - Maximum allowable junction temperature for reliable long-term operation |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002. Cathode indicated by band marking on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to ground or lower-potential rail in unidirectional clamp configuration |
| Cathode | Reverse-biased clamping terminal | Connected to protected line; conducts when voltage exceeds VBR, shunting surge to ground |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| 600 W peak pulse power | Withstands high-energy transients common in 24 V industrial control and automotive power nets |
| Low clamping ratio (VC/VBR ≈ 1.46) | Minimizes overvoltage stress on protected ICs during surge events |
| MSL Level 1, 260 °C reflow compatible | Enables standard SMT assembly without moisture-related popcorning or delamination |
| UL 497B recognized (QVGQ2) | Meets safety requirements for telecom and data line protectors in certified equipment |
Applications
| Industrial Motor Drive Protection | Automotive Body Control Module (BCM) |
|---|---|
|
Use Scenario: Suppressing inductive kickback from relay coils and solenoid drivers in PLC output modules. IC Role / Device Role / Timing Role: Unidirectional TVS placed across coil terminals to clamp reverse EMF spikes to <25 V. Use Value: Prevents gate oxide damage to driving MOSFETs and extends system MTBF by limiting voltage overshoot to safe levels. |
Use Scenario: Protecting LIN bus transceivers and microcontroller I/O pins from load dump and jump-start transients. IC Role / Device Role / Timing Role: Standoff-rated clamping device on 12 V supply rail and LIN signal line. Use Value: Maintains functional integrity of BCM during ISO 7637-2 Pulse 5a (load dump) with no latch-up or reset events. |
| Industrial Sensor Interface Protection | Telecom Power Supply Input Stage |
|
Use Scenario: Safeguarding analog front-end inputs of pressure/temperature sensors connected to long cables in factory automation. IC Role / Device Role / Timing Role: First-line transient suppressor on sensor VDD and signal lines before ESD diode arrays. Use Value: Limits induced surges from nearby AC motor switching to <25 V, preserving ADC reference stability and measurement accuracy. |
Use Scenario: Secondary surge suppression on DC input of PoE-powered network switches after primary MOV stage. IC Role / Device Role / Timing Role: Fast-response clamping element for residual fast-rising transients escaping upstream protection. Use Value: Complies with UL 497B Class B requirements while adding <1 ns response margin beyond MOV-based solutions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15AE3/52 | Commercial-grade version; not AEC-Q101 qualified; same electrical specs and SMB package | Lacks automotive qualification; unsuitable for under-hood or safety-critical modules | Select SMBJ15AHE3/52 when AEC-Q101 compliance is required; choose SMBJ15AE3/52 for cost-sensitive industrial PCBs. |
| SMAJ15AHE3/A | Lower power rating (400 W vs. 600 W); SMA (DO-214AC) package with smaller footprint and higher RθJA | Reduced surge handling margin; limited to lower-energy transients in space-constrained designs | Use SMAJ15AHE3/A only where board area is critical and peak surge energy remains below 400 W capability. |
Compared with SMBJ15AE3/52 and SMAJ15AHE3/A, SMBJ15AHE3/52 delivers automotive-grade reliability and higher surge robustness in the same industry-standard SMB footprint-making it optimal for mission-critical 24 V systems requiring both longevity and high-energy immunity.
Availability
SMBJ15AHE3/52 is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, and telecom power supply input stages requiring stable component supply and full AEC-Q101 traceability.
Supply support for SMBJ15AHE3/52 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-reliability transient suppression in harsh environments-targeting automotive, industrial, and telecom applications demanding consistent clamping performance and long-term stability under thermal and surge stress.
FAQ
What is the breakdown voltage range of SMBJ15AHE3/52?
The SMBJ15AHE3/52 has a guaranteed breakdown voltage (VBR) range of 16.7 V to 18.5 V at 1 mA test current, measured per ANSI/IEEE C62.35. This defines the precise voltage threshold at which the device transitions from high-impedance blocking to low-impedance clamping behavior, ensuring predictable protection onset for 15 V nominal circuits.
Is SMBJ15AHE3/52 suitable for bidirectional signal line protection?
No-SMBJ15AHE3/52 is a unidirectional TVS diode, intended for DC-biased lines like power rails or single-ended digital signals referenced to ground. For bidirectional protection (e.g., RS-485, CAN), use the CA-suffix variant SMBJ15CAHE3/52, which provides symmetrical clamping in both polarities.
Does SMBJ15AHE3/52 meet automotive qualification standards?
Yes-SMBJ15AHE3/52 carries AEC-Q101 qualification, verified through stress tests including HTGB, H3TRB, and ESD (HBM ≥ 8 kV). The "HE3" suffix explicitly denotes RoHS-compliant and AEC-Q101-qualified construction, enabling use in automotive body electronics and chassis modules.
What is the maximum clamping voltage of SMBJ15AHE3/52 during a surge event?
The SMBJ15AHE3/52 clamps to a maximum of 24.4 V when subjected to its rated 24.6 A peak pulse current (IPPM) under the standardized 10/1000 µs waveform. This value is measured at the device terminals and represents the worst-case overvoltage imposed on the protected circuit during surge conditions.
Can SMBJ15AHE3/52 be used in parallel for higher surge current handling?
No-parallel connection of SMBJ15AHE3/52 devices is not recommended due to parameter spread in VBR (±5.5%) and dynamic impedance, leading to uneven current sharing and potential thermal runaway. For higher surge ratings, select a single higher-power device such as SMBJ24AHE3/52 or consult Vishay's application note AN1003 on staged protection.
SMBJ15AHE3/52 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)
SMBJ15AHE3/52 FAQ
1.How can I place an order for SMBJ15AHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ15AHE3/52 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 SMBJ15AHE3/52 reliable?
The price and inventory of SMBJ15AHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ15AHE3/52 is usually 5 days.
3.What payment methods are accepted for SMBJ15AHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ15AHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ15AHE3/52?
SMBJ15AHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ15AHE3/52 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 SMBJ15AHE3/52?
For technical support, including SMBJ15AHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ15AHE3/52 requirements.
6.How does Aetrix verify that SMBJ15AHE3/52 is sourced from the original manufacturer or authorized distributors?
All SMBJ15AHE3/52 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 SMBJ15AHE3/52 meets industry standards.
7.What is the process for return or replacement of SMBJ15AHE3/52?
All SMBJ15AHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ15AHE3/52, 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 SMBJ15AHE3/52 part is unused and in its original packaging.
Return procedure for SMBJ15AHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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