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Vishay General Semiconductor - Diodes Division SMB8J16CAHM3/I
- Part No.:
- SMB8J16CAHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB8J16CAHM3/I.pdf
- Description:
- TVS DIODE 16VWM 26VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,962
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Product details
Overview
SMB8J16CAHM3/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, industrial I/O protection, and telecom line conditioning.
For engineers reviewing the SMB8J16CAHM3/I datasheet, SMB8J16CAHM3/I pinout, SMB8J16CAHM3/I application, or SMB8J16CAHM3/I equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, MSL Level 1 moisture sensitivity, and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This device operates as a voltage-clamped crowbar during transients, leveraging a glass-passivated silicon junction to achieve sub-nanosecond response time and low incremental surge resistance. Its bidirectional symmetry enables protection of AC-coupled or differential signal paths without polarity constraints.
Rated for -55 °C to +150 °C junction temperature, it delivers stable clamping performance across automotive and industrial thermal profiles. The 72 °C/W junction-to-ambient thermal resistance requires minimum 5.0 mm × 5.0 mm copper pad area 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 leakage exceeds 1.0 μA; defines safe working range for protected circuitry. |
| VBR (min/max) | 17.8 V / 19.7 V - breakdown occurs within this band at 1.0 mA test current; ensures predictable turn-on threshold under ESD/lightning surges. |
| VC @ IPPM | 26.0 V - clamps transient to ≤26.0 V at 30.8 A peak pulse current; limits downstream IC stress during 10/1000 μs surge events. |
| PPPM | 800 W - peak pulse power handling with 10/1000 μs waveform; supports IEC 61000-4-5 Level 4 (4 kV) surge immunity when properly mounted. |
| TJ max. | +150 °C - maximum junction temperature; enables use in under-hood automotive environments and high-ambient industrial enclosures. |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC standard; suitable for safety-critical ECUs. |
| MSL Level | Level 1 (J-STD-020) - no floor life limitation; supports unlimited exposure to ambient conditions prior to reflow soldering. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional - no polarity marking; symmetrical dual-terminal construction with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Both terminals function identically; bidirectional clamping allows connection across any two points needing overvoltage protection without orientation check. |
| Case (body) | Thermal and mechanical interface | Plastic body provides UL 94 V-0 flammability rating; thermal path relies on PCB copper pads (0.2" × 0.2" min.) rather than case contact. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals, differential buses (e.g., RS-485), and ungrounded power rails without polarity concerns. |
| AEC-Q101 qualification | Validates long-term reliability in automotive applications including engine control, ADAS sensors, and infotainment power inputs. |
| Glass-passivated junction | Ensures stable leakage (<1.0 μA at VWM) and repeatable breakdown after repeated surge events, critical for mission-critical systems. |
| Low profile SMB package | 0.130"–0.155" height enables use in space-constrained modules while maintaining 800 W surge capability - 2× power density vs. SMA equivalents. |
| Halogen-free & RoHS-compliant | HM3 suffix confirms halogen-free molding compound and lead-free terminations meeting JEDEC J-STD-020 and JESD 201 Class 2 whisker requirements. |
Applications
| Automotive Sensor Protection | Industrial RS-485 Interface |
|---|---|
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: Bidirectional TVS placed between signal line and ground to clamp transients before reaching sensitive input stages. Use Value: Maintains signal integrity during 12 V/24 V system surges up to 800 W, enabling AEC-Q100-compliant module design with single-component protection. |
Use Scenario: Safeguarding RS-485 transceivers in factory automation PLCs against EFT bursts and lightning-induced common-mode surges on twisted-pair lines. IC Role / Device Role / Timing Role: Differential-line TVS connected across A/B lines and/or to ground to suppress mode conversion and prevent receiver latch-up. Use Value: Clamps to 26.0 V within nanoseconds, preventing damage to ±12 V tolerant receivers while preserving data integrity at 10 Mbps rates. |
| Telecom Line Card Protection | Consumer Power Adapter Input |
Use Scenario: Front-end surge suppression on POTS/DSL line cards exposed to lightning-induced longitudinal surges per ITU-T K.20/K.21. IC Role / Device Role / Timing Role: Primary protection device bridging tip/ring lines to chassis ground, coordinated with GDT secondary protection. Use Value: Handles 800 W peak pulse energy without degradation, reducing need for multi-stage designs and lowering BOM count in carrier-grade equipment. |
Use Scenario: Secondary-side overvoltage protection on 5–24 V DC outputs of wall adapters used in smart home hubs and IoT gateways. IC Role / Device Role / Timing Role: Clamp diode placed after DC-DC converter output to absorb coupling transients from nearby switching circuits or ESD events. Use Value: Limits output overshoot to ≤26.0 V during fast transients, preventing latch-up or damage to USB-PD controllers and microcontrollers downstream. |
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/I | RoHS-compliant but not halogen-free; same electrical specs and AEC-Q101 qualification. | Acceptable for commercial-automotive hybrids where halogen content is unrestricted. | Select HM3/I when halogen-free compliance is mandated by OEM Tier 1 specifications or regional environmental regulations. |
| SMAJ16CAHM3 | SMA package (DO-214AC); lower 400 W PPPM rating; identical VWM/VC/IPPM electrical values. | Limited to lower-energy surge environments (e.g., consumer USB ports) due to reduced power handling. | Choose SMAJ16CAHM3 only if board space allows larger footprint and surge threat level is ≤400 W (IEC 61000-4-5 Level 3). |
Compared with SMB8J16CAHE3/I, the SMB8J16CAHM3/I adds halogen-free assurance without trade-offs in clamping or lifetime; versus SMAJ16CAHM3, it delivers double the surge power in the same production-ready SMT process - making it optimal for AEC-Q101-compliant 24 V systems requiring robust 800 W protection.
Availability
SMB8J16CAHM3/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial RS-485 networks, and telecom line card designs requiring stable component supply with full AEC-Q101 traceability and halogen-free compliance.
Supply support for SMB8J16CAHM3/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 high-reliability diodes, MOSFETs, and passive components for automotive, industrial, and computing markets.
The SMB8JxxCA series targets high-power-density transient suppression in space-constrained, thermally demanding applications - engineered specifically for AEC-Q101 compliance and automated SMT manufacturing scalability.
FAQ
What is the clamping voltage of SMB8J16CAHM3/I at its rated peak pulse current?
The SMB8J16CAHM3/I clamps to a maximum of 26.0 V when subjected to its rated 30.8 A peak pulse current (IPPM) under the standard 10/1000 μs waveform. This value is measured at the device terminals with recommended 0.2" × 0.2" copper pads and defines the upper voltage limit imposed on protected circuitry during surge events.
Is SMB8J16CAHM3/I suitable for automotive applications?
Yes, SMB8J16CAHM3/I is AEC-Q101 qualified and manufactured with halogen-free, RoHS-compliant materials. Its -55 °C to +150 °C operating range, glass-passivated junction, and MSL Level 1 rating make it suitable for under-hood and cabin-mounted ECUs, ADAS sensors, and body control modules requiring certified surge protection.
How does the HM3 suffix differ from HE3 in SMB8J16CAHM3/I?
The HM3 suffix in SMB8J16CAHM3/I denotes halogen-free, RoHS-compliant construction and AEC-Q101 qualification, whereas HE3 indicates RoHS compliance and AEC-Q101 qualification without halogen-free assurance. Both share identical electrical characteristics, package, and thermal performance - the distinction lies solely in material composition compliance.
What is the standoff voltage (VWM) and why is it critical for SMB8J16CAHM3/I selection?
The SMB8J16CAHM3/I has a 16 V standoff voltage (VWM), meaning it remains non-conductive with ≤1.0 μA leakage up to this DC or RMS voltage. Selecting a VWM ≥16 V ensures reliable operation in 12 V automotive or 15 V industrial systems while avoiding false triggering during normal operation - a key parameter for stable protection design.
Can SMB8J16CAHM3/I be used in bidirectional signal lines like RS-485 or USB D+/D-?
Yes, SMB8J16CAHM3/I is explicitly bidirectional and symmetric, making it ideal for protecting differential signal pairs. It can be placed across A/B lines or from each line to ground in RS-485, CAN FD, or USB 2.0 interfaces - clamping transients equally in both directions without polarity constraints or added complexity.
SMB8J16CAHM3/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:
- 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:
- 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/I FAQ
1.How can I place an order for SMB8J16CAHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB8J16CAHM3/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/I reliable?
The price and inventory of SMB8J16CAHM3/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/I is usually 5 days.
3.What payment methods are accepted for SMB8J16CAHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB8J16CAHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB8J16CAHM3/I?
SMB8J16CAHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB8J16CAHM3/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/I?
For technical support, including SMB8J16CAHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB8J16CAHM3/I requirements.
6.How does Aetrix verify that SMB8J16CAHM3/I is sourced from the original manufacturer or authorized distributors?
All SMB8J16CAHM3/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/I meets industry standards.
7.What is the process for return or replacement of SMB8J16CAHM3/I?
All SMB8J16CAHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with SMB8J16CAHM3/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/I part is unused and in its original packaging.
Return procedure for SMB8J16CAHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB8J16CAHM3/I Tags
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