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Vishay General Semiconductor - Diodes Division SMB8J16CAHM3_A/I
- Part No.:
- SMB8J16CAHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB8J16CAHM3_A/I.pdf
- Description:
- TVS DIODE 16VWM 26VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,996
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Product details
Overview
SMB8J16CAHM3_A/I 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 standoff voltage (VWM), 26.0 V 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 SMB8J16CAHM3_A/I datasheet, SMB8J16CAHM3_A/I pinout, SMB8J16CAHM3_A/I application, or SMB8J16CAHM3_A/I equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, halogen-free RoHS compliance, and thermal resistance (RθJL = 20 °C/W) for reliable operation in harsh environments.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector, responding within picoseconds to transients induced by inductive switching or ESD events. Its glass-passivated junction ensures stable breakdown behavior, while the bidirectional configuration enables symmetric clamping across both polarities without polarity-sensitive layout constraints.
The device is rated for -55 °C to +150 °C operating junction temperature and meets MSL level 1 per J-STD-020 (260 °C peak reflow). Its low incremental surge resistance and 72 °C/W junction-to-ambient thermal resistance support sustained surge handling when mounted on recommended 5.0 mm × 5.0 mm copper pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 16 V - maximum continuous reverse working voltage before clamping initiates |
| VC @ IPPM | 26.0 V - clamped voltage during 30.8 A 10/1000 µs surge, limiting downstream IC stress |
| PPPM | 800 W - peak pulse power handling capability under standardized surge waveform |
| IPPM | 30.8 A - maximum non-repetitive surge current supported at VWM = 16 V |
| VBR min/max | 17.8 V / 19.7 V - breakdown voltage range at 1.0 mA test current, defining turn-on threshold |
| ID @ VWM | 1.0 µA - reverse leakage at 16 V, ensuring minimal standby power loss |
| RθJL | 20 °C/W - junction-to-lead thermal resistance, critical for PCB pad thermal design |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, RoHS-compliant, AEC-Q101 qualified. Cathode band not marked (bidirectional type).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient return path (bidirectional) | Provides symmetrical conduction path during positive or negative surges |
| Cathode | Transient return path (bidirectional) | Electrically identical to anode; no polarity marking required for bidirectional operation |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns |
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness |
| Low clamping ratio (VC/VWM = 1.625) | Minimizes overvoltage exposure to protected ICs compared to higher-ratio alternatives |
| MSL Level 1 rating | Supports standard SMT reflow profiles up to 260 °C peak without moisture-related failure |
| Glass-passivated junction | Ensures stable VBR over lifetime and immunity to humidity-induced parameter drift |
Applications
| Automotive Sensor Interface | Industrial Digital I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load-dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Shunt-based transient voltage clamp placed directly at connector entry point. Use Value: Limits voltage excursion to ≤26.0 V during 30.8 A surge, preserving integrity of 3.3 V/5 V sensor signal chains. | Use Scenario: Safeguarding PLC digital input modules against field-wiring induced surges and relay contact bounce. IC Role / Device Role / Timing Role: Primary front-end surge suppression before optocoupler or Schmitt-trigger input stage. Use Value: Withstands repeated 800 W surges without degradation, enabling >100,000-cycle field reliability. |
| USB 2.0 Data Line Protection | DC Power Rail Clamp (12 V System) |
Use Scenario: ESD and fast-transient protection on USB D+/D- lines in automotive infotainment head units. IC Role / Device Role / Timing Role: Low-capacitance bidirectional clamp placed adjacent to USB PHY. Use Value: Sub-100 pF junction capacitance (typ.) avoids signal integrity degradation at 480 Mbps. | Use Scenario: Clamping 12 V supply rail against load dump transients in telematics control units. IC Role / Device Role / Timing Role: Secondary overvoltage clamp backing up primary DC-DC converter OVP. Use Value: 800 W PPPM rating handles ISO 16750-2 Pulse 5a (12 V system) without failure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMB8J16CAHE3_A/I | RoHS-compliant but not halogen-free; same electrical specs and AEC-Q101 qualification | Acceptable where halogen content is unrestricted (e.g., non-automotive industrial) | Select SMB8J16CAHM3_A/I when halogen-free compliance is mandated by OEM specification. |
| SMAJ16CA | Lower PPPM (400 W), smaller SMA package (DO-214AC), higher RθJA (110 °C/W) | Suitable only for lower-energy transients or space-constrained consumer designs | Choose SMB8J16CAHM3_A/I for automotive-grade 800 W surge handling and superior thermal performance. |
Compared with SMB8J16CAHE3_A/I, the HM3 suffix adds halogen-free compliance without electrical trade-offs; versus SMAJ16CA, SMB8J16CAHM3_A/I delivers double the surge power rating and 45 % lower thermal resistance - critical for sustained surge duty in automotive ECUs.
Availability
SMB8J16CAHM3_A/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, USB data line protection, and 12 V DC rail clamping requiring stable component supply and full AEC-Q101 traceability.
Supply support for SMB8J16CAHM3_A/I 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 automotive qualification.
The SMB8JxxCA series belongs to Vishay's TRANSZORB® TVS portfolio, engineered specifically for high-power-density, AEC-Q101-compliant transient suppression in automotive and industrial environments.
FAQ
What is the clamping voltage of SMB8J16CAHM3_A/I at its rated peak pulse current?
The SMB8J16CAHM3_A/I has a maximum clamping voltage (VC) of 26.0 V when subjected to its rated peak pulse current (IPPM) of 30.8 A under a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 standards and ensures predictable overvoltage limiting for protected circuitry. The SMB8J16CAHM3_A/I maintains this clamping performance across its qualified operating temperature range (-55 °C to +150 °C).
Is SMB8J16CAHM3_A/I suitable for automotive applications?
Yes, SMB8J16CAHM3_A/I is AEC-Q101 qualified and manufactured with halogen-free, RoHS-compliant materials - meeting stringent automotive reliability requirements. It is explicitly designated for use in automotive sensor units, infotainment systems, and telematics control units per Vishay's ordering nomenclature (HM3 suffix + revision code "A/I"). The SMB8J16CAHM3_A/I undergoes validated testing for temperature cycling, highly accelerated life testing (HALT), and ESD robustness.
How does the SMB8J16CAHM3_A/I differ from unidirectional variants like SMB10J16A?
The SMB8J16CAHM3_A/I is bidirectional with symmetrical clamping for AC or floating signals, whereas SMB10J16A is unidirectional and requires correct polarity orientation. SMB8J16CAHM3_A/I offers 800 W PPPM and 30.8 A IPPM, while SMB10J16A delivers 1000 W PPPM and 38.5 A IPPM - reflecting different energy-handling priorities. Both share the same VWM (16 V) and VC (26.0 V), but only SMB8J16CAHM3_A/I supports AEC-Q101 with HM3 halogen-free construction.
What is the thermal resistance profile of SMB8J16CAHM3_A/I?
SMB8J16CAHM3_A/I has a typical junction-to-lead thermal resistance (RθJL) of 20 °C/W and junction-to-ambient (RθJA) of 72 °C/W when mounted on 5.0 mm × 5.0 mm copper pads per Vishay's recommended layout. This low RθJL enables efficient heat transfer to the PCB, supporting repeated surge events without thermal runaway. The SMB8J16CAHM3_A/I's thermal performance is validated under MSL Level 1 reflow conditions (peak 260 °C).
Does SMB8J16CAHM3_A/I require polarity-aware PCB layout?
No - SMB8J16CAHM3_A/I is a bidirectional TVS diode and carries no cathode marking; its terminals are functionally interchangeable. This eliminates polarity-checking during automated placement and simplifies layout for differential or AC-coupled lines. Unlike unidirectional variants (e.g., SMB10J16A), the SMB8J16CAHM3_A/I provides identical clamping behavior for both positive and negative transients without orientation dependency.
SMB8J16CAHM3_A/I 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/I FAQ
1.How can I place an order for SMB8J16CAHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB8J16CAHM3_A/I 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/I reliable?
The price and inventory of SMB8J16CAHM3_A/I 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/I is usually 5 days.
3.What payment methods are accepted for SMB8J16CAHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB8J16CAHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB8J16CAHM3_A/I?
SMB8J16CAHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB8J16CAHM3_A/I 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/I?
For technical support, including SMB8J16CAHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB8J16CAHM3_A/I requirements.
6.How does Aetrix verify that SMB8J16CAHM3_A/I is sourced from the original manufacturer or authorized distributors?
All SMB8J16CAHM3_A/I 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/I meets industry standards.
7.What is the process for return or replacement of SMB8J16CAHM3_A/I?
All SMB8J16CAHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMB8J16CAHM3_A/I, 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/I part is unused and in its original packaging.
Return procedure for SMB8J16CAHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB8J16CAHM3_A/I Tags
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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