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Vishay General Semiconductor - Diodes Division SMB8J16CAHE3/52
- Part No.:
- SMB8J16CAHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB8J16CAHE3/52.pdf
- Description:
- TVS DIODE 16VWM 26VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,769
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Product details
Overview
SMB8J16CAHE3/52 from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for high-energy surge protection on signal and power lines. It features a 16 V stand-off voltage (VWM), 26.0 V maximum clamping voltage (VC) at 30.8 A peak pulse current (IPPM), and 800 W peak pulse power (PPPM) with 10/1000 μs waveform - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the SMB8J16CAHE3/52 datasheet, SMB8J16CAHE3/52 pinout, SMB8J16CAHE3/52 application, or SMB8J16CAHE3/52 equivalent, key selection criteria include AEC-Q101 qualification, bidirectional polarity, 1.0 μA max reverse leakage at VWM, thermal resistance of 72 °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 voltage-clamping device that responds within picoseconds to transients induced by inductive switching or ESD events. Its glass-passivated junction ensures stable breakdown behavior, while the bidirectional configuration enables symmetrical protection on AC-coupled or differential signal paths without polarity constraints.
The device is rated for -55 °C to +150 °C operating junction temperature, meets MSL Level 1 per J-STD-020, and uses matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards - supporting reflow profiles up to 260 °C peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 16 V - maximum continuous reverse working voltage before clamping activation |
| VBR min/max | 17.8 V / 19.7 V at 1.0 mA - verified breakdown threshold range under standardized test conditions |
| VC @ IPPM | 26.0 V at 30.8 A - clamping voltage during 10/1000 μs surge, defining worst-case protected line voltage |
| PPPM | 800 W - peak pulse power handling capability with standard 10/1000 μs waveform |
| ID @ VWM | ≤1.0 μA - reverse leakage current at stand-off voltage, critical for low-power sensor bias integrity |
| TJ max | +150 °C - maximum junction temperature enabling operation in under-hood automotive environments |
| RθJA | 72 °C/W - thermal resistance from junction to ambient on standard 0.2" × 0.2" copper pads |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional - no polarity marking; cathode band absent per bidirectional construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Both terminals function identically; clamps voltage above ±26.0 V regardless of polarity |
| Case (exposed pad) | Thermal and mechanical interface | No electrical connection; provides thermal dissipation path to PCB copper when mounted per recommended 5.0 mm × 5.0 mm pad layout |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity testing, and mechanical shock per AEC specification |
| Glass passivated junction | Ensures consistent VBR tolerance and long-term stability under repeated surge stress without parameter drift |
| MSL Level 1 rating | Allows unlimited floor life and compatibility with standard lead-free reflow profiles up to 260 °C peak |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (<1 ns rise time), improving protection margin for sensitive ICs |
| UL 94 V-0 molding compound | Self-extinguishing encapsulant required for safety-critical automotive and industrial enclosures |
Applications
| Automotive Sensor Protection | Industrial CAN Bus Interface |
|---|---|
Use Scenario: Protecting ABS wheel speed sensors and engine crankshaft position sensors from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional clamping element placed across differential sensor output lines to limit voltage excursions to ≤26.0 V. Use Value: Prevents damage to downstream signal conditioning amplifiers and microcontroller ADC inputs during 100 V/50 ms load dump events. | Use Scenario: Safeguarding CAN transceiver I/O pins against ESD (IEC 61000-4-2) and burst noise (IEC 61000-4-4) in factory automation nodes. IC Role / Device Role / Timing Role: Low-capacitance TVS placed directly at connector entry point to shunt transients before reaching CANH/CANL pins. Use Value: Maintains signal integrity with <1.0 μA leakage at 16 V, avoiding bias current errors in high-impedance CAN bus termination networks. |
| Consumer Power Adapter Input | Telecom Line Card Surge Protection |
Use Scenario: Secondary-side overvoltage suppression on 12 V DC outputs of wall adapters exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Standoff-rated clamp absorbing 800 W surges without failure, coordinated with upstream fuse and primary-side MOV. Use Value: Enables compact design with SMB footprint while meeting UL 62368-1 transient immunity requirements for Class II power supplies. | Use Scenario: Protecting Ethernet PHY interface components (e.g., magnetics, PHY ICs) on telecom line cards from induced surges on RJ45 ports. IC Role / Device Role / Timing Role: Bidirectional TVS installed across transformer center taps to clamp common-mode transients on data pairs. Use Value: Delivers 26.0 V clamping with 30.8 A surge capacity, ensuring PHY ICs remain within absolute maximum ratings during 1 kV/500 A ring wave tests. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMB8J16CAHM3/52 | Halogen-free, RoHS-compliant variant with identical electrical specs and AEC-Q101 qualification | No functional difference; selected where halogen-free materials are mandated in final assembly | Choose when compliance with JEDEC J-STD-609 Type 1a (halogen-free) is required |
| SMBJ16CAHE3/52 | Same VWM (16 V), VC (26.0 V), and PPPM (800 W), but lower IPPM (24.3 A) and higher RθJA (85 °C/W) | Suitable for lower-duty-cycle surges; less thermal margin in sustained ambient >100 °C | Select only if board-level thermal management limits junction temperature rise below 125 °C |
Compared with SMB8J16CAHE3/52, the HM3 variant offers identical protection performance with halogen-free packaging, while SMBJ16CAHE3/52 trades 21% lower surge current capacity and reduced thermal efficiency for legacy compatibility in non-automotive designs.
Availability
SMB8J16CAHE3/52 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial CAN bus nodes, consumer power adapter outputs, and telecom line card surge protection requiring stable component supply and AEC-Q101 traceability.
Supply support for SMB8J16CAHE3/52 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The SMB8JxxCA series belongs to Vishay's TRANSZORB® TVS platform, engineered specifically for high-reliability bidirectional surge suppression in automotive and industrial environments where AEC-Q101 validation and robust clamping consistency are mandatory.
FAQ
What is the clamping voltage of SMB8J16CAHE3/52 and how is it measured?
The SMB8J16CAHE3/52 has a maximum clamping voltage (VC) of 26.0 V, measured at 30.8 A peak pulse current (IPPM) using the standardized 10/1000 μs double-exponential surge waveform. This value defines the upper voltage limit imposed on protected circuitry during transient events and is guaranteed per Vishay Document Number 88422, page 3, under "ELECTRICAL CHARACTERISTICS" for bidirectional devices. The SMB8J16CAHE3/52 maintains this clamping performance across its full operating temperature range (-55 °C to +150 °C).
Is SMB8J16CAHE3/52 suitable for automotive applications?
Yes, SMB8J16CAHE3/52 is AEC-Q101 qualified and explicitly designated for automotive use via its HE3 suffix, confirming compliance with stress tests including temperature cycling, high-temperature operating life, and mechanical shock. It is deployed in engine control modules, ADAS sensor interfaces, and body electronics where bidirectional surge protection at 16 V stand-off is required. The SMB8J16CAHE3/52 meets MSL Level 1 and supports lead-free reflow up to 260 °C, aligning with automotive manufacturing standards.
How does SMB8J16CAHE3/52 differ from unidirectional variants like SMB10J16AHE3/52?
The SMB8J16CAHE3/52 is bidirectional with symmetrical clamping behavior on both polarities, whereas SMB10J16AHE3/52 is unidirectional and conducts only in reverse bias. Key differences include SMB8J16CAHE3/52's 800 W PPPM (vs. 1000 W for SMB10J16AHE3/52), 30.8 A IPPM (vs. 38.5 A), and absence of cathode band marking. The SMB8J16CAHE3/52 is intended for AC-coupled or differential lines; SMB10J16AHE3/52 suits DC power rail protection where polarity is fixed.
What is the thermal resistance of SMB8J16CAHE3/52 and how does it affect layout?
The SMB8J16CAHE3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 72 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, as specified in the Vishay datasheet. This value requires PCB designers to allocate sufficient copper area and consider thermal vias beneath the SMB footprint to maintain junction temperature below +150 °C during repetitive surge events. Reducing pad size increases RθJA, risking thermal runaway under high-duty-cycle transients - the SMB8J16CAHE3/52 must be laid out per the recommended mounting pad dimensions in the package outline drawing.
Does SMB8J16CAHE3/52 have any special handling or storage requirements?
SMB8J16CAHE3/52 is rated MSL Level 1 per J-STD-020, meaning it has unlimited floor life and requires no dry pack or baking prior to assembly. It is compatible with standard SMT reflow profiles, including lead-free processes with peak temperatures up to 260 °C. Storage should occur in original sealed moisture barrier bags at ambient conditions (<30 °C, <60% RH); once opened, the SMB8J16CAHE3/52 may be used immediately without bake-out due to its MSL Level 1 classification - confirmed in Vishay Document Number 88422, page 1.
SMB8J16CAHE3/52 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):
- 16V
- Voltage - Breakdown (Min):
- 17.8V
- Voltage - Clamping (Max) @ Ipp:
- 26V
- Current - Peak Pulse (10/1000µs):
- 30.8A
- Power - Peak Pulse:
- 800W
- 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 (SMB)
SMB8J16CAHE3/52 FAQ
1.How can I place an order for SMB8J16CAHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB8J16CAHE3/52 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 SMB8J16CAHE3/52 reliable?
The price and inventory of SMB8J16CAHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB8J16CAHE3/52 is usually 5 days.
3.What payment methods are accepted for SMB8J16CAHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB8J16CAHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB8J16CAHE3/52?
SMB8J16CAHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB8J16CAHE3/52 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 SMB8J16CAHE3/52?
For technical support, including SMB8J16CAHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB8J16CAHE3/52 requirements.
6.How does Aetrix verify that SMB8J16CAHE3/52 is sourced from the original manufacturer or authorized distributors?
All SMB8J16CAHE3/52 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 SMB8J16CAHE3/52 meets industry standards.
7.What is the process for return or replacement of SMB8J16CAHE3/52?
All SMB8J16CAHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMB8J16CAHE3/52, 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 SMB8J16CAHE3/52 part is unused and in its original packaging.
Return procedure for SMB8J16CAHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB8J16CAHE3/52 Tags
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