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Vishay General Semiconductor - Diodes Division SMB8J16CAHM3/H
- Part No.:
- SMB8J16CAHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB8J16CAHM3/H.pdf
- Description:
- TVS DIODE 16VWM 26VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,861
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Product details
Overview
SMB8J16CAHM3/H 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), 800 W peak pulse power (10/1000 µs), and AEC-Q101 qualification for automotive electronics.
For engineers reviewing the SMB8J16CAHM3/H datasheet, SMB8J16CAHM3/H pinout, SMB8J16CAHM3/H application, or SMB8J16CAHM3/H equivalent, this device serves as a halogen-free, RoHS-compliant, automotive-grade TVS for protecting CAN bus transceivers, sensor supply rails, and infotainment I/O interfaces against ISO 7637-2 and IEC 61000-4-5 transients.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, enabling robust protection of AC-coupled or differential signal paths without polarity constraints. Its glass-passivated junction ensures stable breakdown behavior and low leakage (<1.0 µA at VWM), while the low incremental surge resistance supports tight clamping under fast-rising transients.
The device is rated for 150 °C maximum junction temperature and exhibits a typical thermal resistance of 20 °C/W (junction-to-lead), supporting reliable operation under repeated surge conditions when mounted on recommended 5.0 mm × 5.0 mm copper pads. It meets MSL level 1 per J-STD-020 with 260 °C reflow peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 16 V - Maximum continuous reverse working voltage before significant leakage; defines safe operating margin for 12 V automotive systems. |
| VBR (min/max) | 17.8 V / 19.7 V - Breakdown occurs within this range at 1 mA test current; ensures consistent turn-on threshold across production lots. |
| VC @ IPPM | 26.0 V - Clamped voltage at 30.8 A peak pulse current; limits downstream IC stress during 800 W transient events. |
| PPPM | 800 W - Peak pulse power handling (10/1000 µs waveform); sufficient for ISO 7637-2 Pulse 5a/b and IEC 61000-4-5 Level 4 surges. |
| IPPM | 30.8 A - Peak pulse current capability; enables protection of 12 V supply rails with up to 2 Ω source impedance. |
| Junction Temp | −55 °C to +150 °C - Wide operating range supports under-hood automotive placement and industrial ambient conditions. |
| AEC-Q101 | Qualified - Validated for automotive reliability including HTOL, TC, UHAST, and ESD; suitable for safety-critical ECUs. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking; matte tin-plated leads, compliant with J-STD-002 and JESD 22-B102 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Both terminals function identically; bidirectional clamping allows placement across any two-point node without orientation concern. |
| Case (body) | Thermal and mechanical interface | Exposed metal slug provides primary heat path to PCB copper; requires minimum 5.0 mm × 5.0 mm pad per terminal for rated power dissipation. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals, differential buses (e.g., CAN, LIN), and floating power domains without external polarity management. |
| AEC-Q101 qualification | Validated for automotive use including temperature cycling, humidity testing, and long-term reliability-reduces qualification burden for Tier 1 suppliers. |
| Halogen-free & RoHS-compliant (HM3 suffix) | Meets global environmental regulations and OEM material declarations; eliminates brominated flame retardants in molding compound. |
| Low clamping ratio (VC/VBR ≈ 1.46) | Minimizes overvoltage exposure to protected ICs-critical for 3.3 V or 5 V logic interfacing with 12 V domains. |
| MSL Level 1 rating | Allows unlimited floor life and standard 260 °C reflow without baking; simplifies SMT line integration and inventory management. |
Applications
| Automotive CAN Bus Protection | Engine Control Unit (ECU) Power Input |
|---|---|
Use Scenario: Protecting high-speed CAN FD transceivers from load dump and inductive switching transients in vehicle networks. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across CAN_H/CAN_L differential pair or between supply and ground. Use Value: Limits transient voltage to ≤26.0 V during 800 W surges, preserving transceiver integrity without adding series impedance or propagation delay. |
Use Scenario: Safeguarding 12 V input rails of engine control modules exposed to ISO 7637-2 Pulse 5a (load dump) events. IC Role / Device Role / Timing Role: Primary shunt protector located upstream of DC/DC converter input filter. Use Value: Clamps 12 V rail to 26.0 V within nanoseconds, preventing overvoltage damage to downstream regulators and microcontrollers. |
| Automotive Occupant Detection Sensor | Infotainment Display Interface |
Use Scenario: Shielding capacitive or resistive occupant detection sensors from ESD and cable discharge events in seat assemblies. IC Role / Device Role / Timing Role: Point-of-entry protection on analog sensor supply and output lines. Use Value: Sub-1 µA leakage at 16 V ensures minimal impact on sensor bias accuracy; 26.0 V clamping prevents ADC saturation during ±8 kV contact ESD. |
Use Scenario: Protecting LVDS or FPD-Link III video interface lines between head unit and display against hot-swap and cable coupling transients. IC Role / Device Role / Timing Role: Low-capacitance bidirectional clamp on differential data pairs. Use Value: Symmetric clamping maintains signal integrity across full differential swing; no DC bias shift introduced due to balanced structure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMB8J16CAHE3/H | RoHS-compliant but not halogen-free; same electrical specs and AEC-Q101 qualification. | Acceptable where halogen-free requirement is not mandated by OEM or regional regulation. | Select when cost sensitivity outweighs halogen-free compliance; identical footprint and performance. |
| SMC8J16CAHM3/H | Larger SMC (DO-214AB) package; 1500 W PPPM, 43.5 A IPPM, same VWM/VC. | Suitable for higher-energy surge environments (e.g., chassis-level inputs) where PCB space permits larger footprint. | Choose when system-level surge testing exceeds 800 W requirements; requires layout change due to larger body and pad pattern. |
Compared with SMB8J16CAHM3/H, the HE3 variant trades halogen-free status for slightly lower cost without sacrificing AEC-Q101 or electrical performance, while the SMC8J16CAHM3/H offers 87.5 % higher surge power handling at the expense of PCB area and thermal pad layout.
Availability
SMB8J16CAHM3/H is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor systems, and infotainment hardware requiring stable component supply with AEC-Q101 validation and halogen-free compliance.
Supply support for SMB8J16CAHM3/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, efficiency, and application-specific optimization.
The SMB8JxxCA family delivers high-power-density TVS solutions optimized for automotive and industrial environments where AEC-Q101 compliance, bidirectional clamping, and compact SMB packaging are mandatory design requirements.
FAQ
What is the clamping voltage of SMB8J16CAHM3/H at its rated peak pulse current?
The SMB8J16CAHM3/H has a maximum clamping voltage (VC) of 26.0 V when subjected to its rated peak pulse current of 30.8 A (10/1000 µs waveform). This value is measured per ANSI/IEEE C62.35 and guarantees that protected circuitry will not experience voltages exceeding 26.0 V during standardized surge events, making SMB8J16CAHM3/H appropriate for safeguarding 12 V automotive electronics against ISO 7637-2 transients.
Is SMB8J16CAHM3/H suitable for bidirectional signal line protection?
Yes, SMB8J16CAHM3/H is explicitly designed as a bidirectional TVS diode, with symmetrical breakdown and clamping characteristics in both polarities. Its unmarked SMB package and matched VBR min/max (17.8 V / 19.7 V) across both directions make SMB8J16CAHM3/H ideal for protecting differential interfaces such as CAN, LIN, RS-485, and LVDS, where polarity-independent transient suppression is required without additional circuitry.
Does SMB8J16CAHM3/H meet automotive qualification standards?
Yes, SMB8J16CAHM3/H is AEC-Q101 qualified and carries the HM3 suffix indicating halogen-free, RoHS-compliant construction. It has undergone rigorous stress testing-including high-temperature operating life, temperature cycling, and unbiased highly accelerated stress testing-to validate reliability for automotive under-hood and cabin applications. This certification confirms SMB8J16CAHM3/H is approved for use in ECUs, ADAS sensors, and infotainment systems per major OEM requirements.
What is the maximum operating temperature for SMB8J16CAHM3/H?
The SMB8J16CAHM3/H has a specified operating junction and storage temperature range of −55 °C to +150 °C. Its 150 °C maximum junction temperature rating enables deployment in high-ambient environments such as engine compartments or power inverters. Thermal performance is supported by a typical junction-to-lead thermal resistance (RθJL) of 20 °C/W, provided the device is mounted per Vishay's recommended 5.0 mm × 5.0 mm copper pad layout.
How does the HM3 suffix affect the compliance profile of SMB8J16CAHM3/H?
The HM3 suffix on SMB8J16CAHM3/H denotes halogen-free, RoHS-compliant construction meeting JEDEC J-STD-20 and JESD201 Class 2 whisker resistance requirements. Unlike E3-suffix variants, HM3 uses bromine- and chlorine-free flame retardants in the epoxy molding compound while retaining identical electrical specifications, AEC-Q101 qualification, and solderability. This makes SMB8J16CAHM3/H compliant with strict OEM material declarations and EU/China RoHS Annex II updates.
SMB8J16CAHM3/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:
- 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/H FAQ
1.How can I place an order for SMB8J16CAHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB8J16CAHM3/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/H reliable?
The price and inventory of SMB8J16CAHM3/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/H is usually 5 days.
3.What payment methods are accepted for SMB8J16CAHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB8J16CAHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB8J16CAHM3/H?
SMB8J16CAHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB8J16CAHM3/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/H?
For technical support, including SMB8J16CAHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB8J16CAHM3/H requirements.
6.How does Aetrix verify that SMB8J16CAHM3/H is sourced from the original manufacturer or authorized distributors?
All SMB8J16CAHM3/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/H meets industry standards.
7.What is the process for return or replacement of SMB8J16CAHM3/H?
All SMB8J16CAHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMB8J16CAHM3/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/H part is unused and in its original packaging.
Return procedure for SMB8J16CAHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB8J16CAHM3/H Tags
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