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Vishay General Semiconductor - Diodes Division SMBJ15CAHE3/52
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- Part No.:
- SMBJ15CAHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ15CAHE3/52.pdf
- Description:
- TVS DIODE 15VWM 24.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,277
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Product details
Overview
SMBJ15CAHE3/52 from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on signal and power lines. It features a 15 V standoff 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 signal lines in industrial and telecom equipment.
For engineers reviewing the SMBJ15CAHE3/52 datasheet, SMBJ15CAHE3/52 pinout, SMBJ15CAHE3/52 application, or SMBJ15CAHE3/52 equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, low clamping ratio (VC/VWM = 1.63), MSL Level 1 moisture sensitivity, and compatibility with automated SMT placement on standard PCB pad layouts.
Technical Context
This TVS diode operates as a voltage-clamping protection device across two terminals, responding to transient overvoltages in either polarity due to its symmetrical bidirectional structure. Its glass-passivated junction enables fast response time (<1 ns), low incremental surge resistance, and stable breakdown behavior under repetitive 10/1000 µs surges at 0.01% duty cycle.
The device is rated for -55 °C to +150 °C operating junction temperature, with thermal resistance of 100 °C/W (junction-to-ambient) and 20 °C/W (junction-to-lead). It meets UL 497B recognition (QVGQ2) and is RoHS-compliant with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 15 V - Maximum continuous reverse working voltage before clamping begins; defines safe operating margin below breakdown. |
| VBR min/max | 16.7 V / 18.5 V at 1 mA - Verified breakdown voltage range ensures reliable triggering without premature conduction. |
| VC @ IPPM | 24.4 V at 24.6 A - Clamped voltage during 600 W transient; determines protected circuit's maximum stress level. |
| PPPM | 600 W - Peak pulse power handling with 10/1000 µs waveform; supports robust surge immunity per IEC 61000-4-5. |
| IPPM | 24.6 A - Peak pulse current corresponding to VC; used to size PCB trace width and verify layout survivability. |
| TJ max | +150 °C - Maximum junction temperature; enables operation in high-ambient environments like motor drives or base stations. |
| MSL Level | Level 1 (J-STD-020) - No floor life limitation; supports standard reflow without dry-pack or baking requirements. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with molded compound meeting UL 94 V-0 flammability rating. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); cathode band absent (bidirectional type).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient return path (bidirectional) | Provides symmetrical conduction in both polarities; connects to protected line or ground reference point. |
| Cathode | Transient return path (bidirectional) | Electrically identical to Anode in bidirectional configuration; no polarity marking required on device body. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - suitable for under-hood and ADAS modules. |
| 600 W peak pulse power | Withstands IEC 61000-4-5 Level 4 (4 kV) surges on 50 Ω source impedance without degradation. |
| Clamping ratio VC/VWM = 1.63 | Minimizes overvoltage stress on downstream ICs compared to higher-ratio suppressors (e.g., >1.8). |
| Low thermal resistance RθJL | 20 °C/W junction-to-lead enables efficient heat transfer to PCB copper pads, supporting sustained surge repetition. |
| Matte tin-plated leads | Ensures reliable solder wetting and intermetallic formation per J-STD-002, critical for high-yield SMT assembly. |
Applications
| Industrial Motor Drives | Automotive Sensor Interfaces |
|---|---|
|
Use Scenario: Protection of gate driver signal lines against inductive kickback from IGBT/MOSFET switching in variable-frequency drives. IC Role / Device Role / Timing Role: Bidirectional clamping element placed between gate resistor and driver output to limit voltage excursions to <25 V. Use Value: Prevents gate oxide damage and false turn-on by limiting transient overshoot to within ±24.4 V, preserving drive integrity. |
Use Scenario: Shielding LIN/CAN physical layer inputs in automotive cabin sensors (e.g., seat occupancy, ambient light) from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Primary overvoltage clamp on differential signal pair, referenced to vehicle chassis ground. Use Value: Maintains signal integrity during 100 V/50 ms load dump events while enabling AEC-Q101-compliant system certification. |
| Telecom Power Feeds | Consumer USB-C ESD Protection |
|
Use Scenario: Safeguarding 48 V DC power input stages in PoE-powered network switches and baseband units against lightning-induced surges. IC Role / Device Role / Timing Role: Secondary-level TVS placed after primary MOV, clamping residual transients before DC-DC converter input. Use Value: Limits clamped voltage to 24.4 V - well below typical 36–75 V input range of buck controllers, avoiding input overvoltage shutdown. |
Use Scenario: Protecting USB-C CC and SBU pins in portable devices from human-body-model (HBM) and IEC 61000-4-2 contact discharge events. IC Role / Device Role / Timing Role: Low-capacitance bidirectional clamp integrated into front-end ESD protection array near connector. Use Value: Provides sub-1 ns response and <1 µA leakage at 15 V, ensuring no signal distortion on high-speed sideband use (SBU) channels. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15CA-M3/52 | Halogen-free, RoHS-compliant variant; identical electrical specs and AEC-Q101 qualification. | No functional difference; selected when halogen-free compliance is mandated by OEM environmental policy. | Direct substitution where halogen content restrictions apply; same footprint and thermal performance. |
| SMCJ15CAHE3/52 | Same VWM, VC, and VBR, but in larger SMC (DO-214AB) package with 1500 W PPPM. | Used where higher surge energy absorption is required (e.g., outdoor telecom cabinets), accepting larger board area. | Choose when system-level surge test levels exceed 600 W; not pin-compatible due to different package outline and pad layout. |
Compared with SMBJ15CAHE3/52, the SMBJ15CA-M3/52 offers identical protection performance with halogen-free materials, while the SMCJ15CAHE3/52 delivers 2.5× higher surge power in a physically incompatible package - requiring PCB redesign but enabling harsher environment deployment.
Availability
SMBJ15CAHE3/52 is available at Aetrix Electronics and suitable for industrial motor drives, automotive sensor interfaces, telecom power feeds, and consumer USB-C ESD protection requiring stable component supply and AEC-Q101 assurance.
Supply support for SMBJ15CAHE3/52 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 to deliver high-power transient suppression in compact surface-mount packages for automotive, industrial, and communications systems demanding AEC-Q101 qualification and repeatable clamping performance.
FAQ
What is the clamping voltage of SMBJ15CAHE3/52 at its rated peak pulse current?
The SMBJ15CAHE3/52 has a maximum clamping voltage (VC) of 24.4 V at its rated peak pulse current of 24.6 A (10/1000 µs waveform). This value is measured per ANSI/IEEE C62.35 and confirmed in Vishay's datasheet revision 09-Jan-2024, Document Number 88392. The SMBJ15CAHE3/52 maintains this clamping performance across its full operating temperature range of -55 °C to +150 °C.
Is SMBJ15CAHE3/52 suitable for automotive applications?
Yes, SMBJ15CAHE3/52 is AEC-Q101 qualified and explicitly designated for automotive use with ordering code suffix "HE3". It undergoes stress testing including temperature cycling, highly accelerated life testing (HALT), and ESD verification per AEC standards. The SMBJ15CAHE3/52 is commonly deployed in body control modules, sensor interfaces, and infotainment power rails where transient immunity and long-term reliability are mandatory.
How does the bidirectional design of SMBJ15CAHE3/52 affect its circuit implementation?
The bidirectional design of SMBJ15CAHE3/52 allows it to suppress transients of either polarity without regard to orientation - eliminating the need for polarity-aware placement on PCBs. Unlike unidirectional TVS diodes, the SMBJ15CAHE3/52 has no cathode marking and functions identically across both terminals. This simplifies layout in AC-coupled or differential signal paths such as RS-485, CAN, or audio lines, where voltage reversals are inherent.
What is the maximum steady-state power dissipation of SMBJ15CAHE3/52?
The SMBJ15CAHE3/52 has a maximum steady-state power dissipation (PD) of 5.0 W at TA = 50 °C on an infinite heatsink. In typical PCB mounting (0.2" × 0.2" copper pads per terminal), derating applies above 25 °C ambient per Figure 2 in the datasheet. The SMBJ15CAHE3/52 is not intended for continuous power dissipation; its primary function is transient energy absorption, not DC power handling.
Does SMBJ15CAHE3/52 require special handling during reflow soldering?
No, SMBJ15CAHE3/52 is rated MSL Level 1 per J-STD-020, meaning it has unlimited floor life and withstands standard lead-free reflow profiles up to 260 °C peak temperature without baking or dry-pack requirements. Its matte tin-plated leads comply with J-STD-002 for solderability, and the SMB (DO-214AA) package is optimized for automated placement and reflow in high-volume manufacturing - confirming robust process compatibility for the SMBJ15CAHE3/52.
SMBJ15CAHE3/52 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:
- -
- Bidirectional Channels:
- 1
- 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)
SMBJ15CAHE3/52 FAQ
1.How can I place an order for SMBJ15CAHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ15CAHE3/52 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 SMBJ15CAHE3/52 reliable?
The price and inventory of SMBJ15CAHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ15CAHE3/52 is usually 5 days.
3.What payment methods are accepted for SMBJ15CAHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ15CAHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ15CAHE3/52?
SMBJ15CAHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ15CAHE3/52 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 SMBJ15CAHE3/52?
For technical support, including SMBJ15CAHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ15CAHE3/52 requirements.
6.How does Aetrix verify that SMBJ15CAHE3/52 is sourced from the original manufacturer or authorized distributors?
All SMBJ15CAHE3/52 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 SMBJ15CAHE3/52 meets industry standards.
7.What is the process for return or replacement of SMBJ15CAHE3/52?
All SMBJ15CAHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ15CAHE3/52, 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 SMBJ15CAHE3/52 part is unused and in its original packaging.
Return procedure for SMBJ15CAHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ15CAHE3/52 Tags
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