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Vishay General Semiconductor - Diodes Division SMB8J16CAHM3_A/H
- Part No.:
- SMB8J16CAHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB8J16CAHM3_A/H.pdf
- Description:
- TVS DIODE 16VWM 26VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,030
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Product details
Overview
SMB8J16CAHM3_A/H from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for high-energy surge protection with 800 W peak pulse power (10/1000 μs), 16 V stand-off voltage (VWM), and 26.0 V clamping voltage (VC) at 30.8 A peak pulse current. It is AEC-Q101 qualified and used to protect automotive sensor signal lines, CAN transceivers, and power supply rails against ESD and load-dump transients.
For engineers reviewing the SMB8J16CAHM3_A/H datasheet, SMB8J16CAHM3_A/H pinout, SMB8J16CAHM3_A/H application, or SMB8J16CAHM3_A/H equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, clamping performance under standardized 10/1000 μs surge, thermal resistance (RθJA = 72 °C/W), and halogen-free RoHS-compliant construction per JESD201 Class 2 whisker testing.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, enabling robust protection of AC-coupled or differential signal paths without polarity sensitivity. Its glass-passivated junction ensures stable breakdown behavior and low leakage (<1.0 μA at VWM = 16 V), while the low incremental surge resistance supports consistent clamping during repetitive transients.
The device meets MSL Level 1 per J-STD-020 with 260 °C lead-free reflow compatibility and is rated for operation from −55 °C to +150 °C junction temperature. Its 72 °C/W junction-to-ambient thermal resistance requires minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal for full 800 W rating compliance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 16 V - Maximum continuous reverse operating voltage before clamping begins; defines safe signal swing margin for protected circuitry. |
| VBR min/max | 17.8 V / 19.7 V - Breakdown occurs within this range at 1.0 mA test current; ensures predictable turn-on threshold across production lot. |
| VC @ IPPM | 26.0 V at 30.8 A - Clamped voltage during 10/1000 μs surge; determines maximum stress imposed on downstream ICs. |
| PPPM | 800 W - Peak pulse power handling capability; defines energy absorption capacity for standardized lightning/surge waveforms. |
| ID @ VWM | <1.0 μA - Reverse leakage at stand-off voltage; critical for low-power sensor interfaces and battery-backed systems. |
| RθJA | 72 °C/W - Junction-to-ambient thermal resistance; dictates required PCB copper area and airflow for sustained surge duty cycles. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD (HBM ≥ 8 kV); enables use in engine control, ADAS, and infotainment modules. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); matte tin-plated leads, solderable per J-STD-002 and JESD22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Bidirectional terminals conduct equally in either direction above VBR; no cathode band marking required. |
| Case (body) | Thermal and mechanical interface | Plastic body provides UL 94 V-0 flammability rating; thermal path relies on soldered pad area, not case contact. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive underhood and cabin applications including temperature cycling, high-temp reverse bias, and ESD stress. |
| Halogen-free & RoHS-compliant (HM3 suffix) | Meets global environmental regulations and JESD201 Class 2 whisker resistance for long-term solder joint integrity. |
| Low clamping ratio (VC/VBR ≈ 1.39) | Minimizes overvoltage overshoot during surge events, reducing risk of latch-up or gate oxide damage in protected MOSFETs or ICs. |
| MSL Level 1 moisture sensitivity | Enables standard SMT assembly without dry-pack or baking; compatible with 260 °C peak reflow profile. |
| Glass-passivated junction | Ensures stable VBR tolerance and low leakage drift over time and temperature, critical for precision analog front-ends. |
Applications
| Automotive Sensor Protection | CAN Bus Transient Suppression |
|---|---|
Use Scenario: Protecting LIN/CAN node voltage regulators and transceivers from ISO 7637-2 pulse 1, 2a, and 5a transients in vehicle body control modules. IC Role / Device Role / Timing Role: Bidirectional clamping element placed between VCC rail and ground, shunting surge energy away from transceiver ICs. Use Value: Maintains 26.0 V clamping level during 30.8 A surges, preventing transceiver latch-up and ensuring bus recovery within <100 ms after transient clearance. | Use Scenario: Shielding high-speed CAN FD signal pairs (CANH/CANL) from coupled ESD and inductive switching noise in ADAS camera modules. IC Role / Device Role / Timing Role: Differential-mode TVS placed across CANH–CANL lines to clamp common-mode surges without distorting signal integrity. Use Value: Symmetrical 17.8–19.7 V breakdown enables balanced clamping on both lines, preserving common-mode rejection ratio (CMRR) >60 dB up to 1 MHz. |
| Industrial PLC I/O Protection | Consumer Power Adapter Input Stage |
Use Scenario: Safeguarding 24 V DC digital input circuits in programmable logic controllers against field-wiring induced surges and relay coil flyback. IC Role / Device Role / Timing Role: Standoff-clamp TVS connected between input terminal and ground, absorbing up to 800 W pulses without degradation. Use Value: Withstands ≥1000 surges at rated PPPM due to low thermal resistance (RθJL = 20 °C/W), extending service life in unattended factory environments. | Use Scenario: Protecting secondary-side rectifier outputs and feedback optocoupler inputs in compact wall adapters subjected to mains-borne surges. IC Role / Device Role / Timing Role: Low-leakage (≤1.0 μA) bidirectional suppressor placed across output capacitor to limit overvoltage during line dips and recoveries. Use Value: Enables compact layout with minimal board space (SMB footprint), while maintaining <100 ppm/year parameter drift under 85 °C/85% RH stress. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMB8J16CAHE3_A/H | RoHS-compliant but not halogen-free; same electrical specs and AEC-Q101 qualification. | Acceptable for commercial-automotive hybrids where halogen content is unrestricted. | Select when cost sensitivity outweighs halogen-free requirement and full automotive traceability is not mandated. |
| SMAJ16CA | Lower PPPM (400 W), larger RθJA (95 °C/W), SMA package (smaller thermal mass). | Limited to lower-energy transients; unsuitable for ISO 7637-2 Pulse 5a or repeated surge duty. | Choose only for space-constrained consumer applications with ≤200 W surge exposure and ambient <70 °C. |
Compared with SMB8J16CAHM3_A/H, the HE3 variant offers identical surge performance but lacks halogen-free certification, while the SMAJ16CA sacrifices 50 % peak power handling and thermal robustness-making it inadequate for automotive or industrial surge immunity validation.
Availability
SMB8J16CAHM3_A/H is available at Aetrix Electronics and suitable for automotive sensor protection, CAN bus transient suppression, and industrial PLC I/O requiring stable component supply with full AEC-Q101 traceability and halogen-free compliance.
Supply support for SMB8J16CAHM3_A/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, rectifiers, MOSFETs, and protection devices with emphasis on reliability, power density, and automotive qualification.
The SMB8JxxCA series belongs to Vishay's TRANSZORB® high-power TVS family, engineered specifically for AEC-Q101-compliant surge protection in harsh automotive and industrial environments where clamping consistency and thermal resilience are critical.
FAQ
What is the clamping voltage of SMB8J16CAHM3_A/H at its rated peak pulse current?
The SMB8J16CAHM3_A/H clamps to a maximum of 26.0 V when subjected to its rated peak pulse current of 30.8 A under the standard 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and confirmed in Vishay's Document Number 88422, ensuring predictable overvoltage limiting for protected ICs such as CAN transceivers and microcontrollers. The SMB8J16CAHM3_A/H maintains this clamping performance across its full operating temperature range (−55 °C to +150 °C).
Is SMB8J16CAHM3_A/H suitable for automotive applications?
Yes, SMB8J16CAHM3_A/H is AEC-Q101 qualified and explicitly designated for automotive use with the HM3 suffix indicating halogen-free, RoHS-compliant, and AEC-Q101–certified construction. It meets requirements for under-hood and cabin modules including engine control units, body electronics, and ADAS sensors. The SMB8J16CAHM3_A/H has passed temperature cycling, high-temperature reverse bias, and ESD testing per AEC-Q101 Rev D, making it appropriate for ISO 7637-2 compliant designs.
How does the SMB8J16CAHM3_A/H differ from unidirectional variants like SMB10J16A?
The SMB8J16CAHM3_A/H is bidirectional with symmetrical breakdown (17.8–19.7 V in both directions) and 800 W PPPM, whereas SMB10J16A is unidirectional (cathode-marked), offers 1000 W PPPM, and conducts only in reverse bias. The SMB8J16CAHM3_A/H is optimized for AC-coupled or differential signal protection (e.g., CAN, RS-485), while SMB10J16A suits DC rail protection where polarity is fixed. Their SMB packages are mechanically identical, but electrical behavior and surge ratings differ fundamentally.
What is the maximum reverse leakage current for SMB8J16CAHM3_A/H at its stand-off voltage?
The SMB8J16CAHM3_A/H exhibits a maximum reverse leakage current (ID) of 1.0 μA at its 16 V stand-off voltage (VWM), measured at TA = 25 °C. This ultra-low leakage preserves signal integrity in high-impedance sensor interfaces and extends battery life in always-on automotive modules. Leakage remains below 5.0 μA up to +125 °C, as verified in Vishay's thermal derating curves (Fig. 2, Doc. 88422), confirming suitability for extended-temperature applications.
Does SMB8J16CAHM3_A/H require special PCB layout considerations?
Yes, SMB8J16CAHM3_A/H requires minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal to achieve its full 800 W peak pulse power rating, as specified in Vishay's thermal derating data. Smaller pads reduce thermal dissipation and cause premature thermal runaway during surge events. The SMB8J16CAHM3_A/H also benefits from short, wide traces to ground plane and avoidance of vias in current paths-critical for maintaining low-inductance clamping response in fast transients like ESD (IEC 61000-4-2).
SMB8J16CAHM3_A/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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:
- 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)
SMB8J16CAHM3_A/H FAQ
1.How can I place an order for SMB8J16CAHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB8J16CAHM3_A/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 SMB8J16CAHM3_A/H reliable?
The price and inventory of SMB8J16CAHM3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB8J16CAHM3_A/H is usually 5 days.
3.What payment methods are accepted for SMB8J16CAHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB8J16CAHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB8J16CAHM3_A/H?
SMB8J16CAHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB8J16CAHM3_A/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 SMB8J16CAHM3_A/H?
For technical support, including SMB8J16CAHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB8J16CAHM3_A/H requirements.
6.How does Aetrix verify that SMB8J16CAHM3_A/H is sourced from the original manufacturer or authorized distributors?
All SMB8J16CAHM3_A/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 SMB8J16CAHM3_A/H meets industry standards.
7.What is the process for return or replacement of SMB8J16CAHM3_A/H?
All SMB8J16CAHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMB8J16CAHM3_A/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 SMB8J16CAHM3_A/H part is unused and in its original packaging.
Return procedure for SMB8J16CAHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB8J16CAHM3_A/H Tags
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