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Vishay General Semiconductor - Diodes Division SMB8J16CAHM3_B/H
- Part No.:
- SMB8J16CAHM3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB8J16CAHM3_B/H.pdf
- Description:
- 800W,16V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:7,567
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Product details
Overview
SMB8J16CAHM3_B/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), and 800 W peak pulse power (PPPM) with 10/1000 µs waveform - optimized for automotive sensor interface and industrial I/O protection.
For engineers reviewing the SMB8J16CAHM3_B/H datasheet, SMB8J16CAHM3_B/H pinout, SMB8J16CAHM3_B/H application, or SMB8J16CAHM3_B/H equivalent, this AEC-Q101 qualified, halogen-free, RoHS-compliant TVS diode delivers verified clamping performance, low leakage (<1.0 µA at VWM), and MSL Level 1 reflow compatibility - critical for automotive-grade ESD/surge resilience in CAN, LIN, and analog sensor circuits.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, enabling robust protection against voltage transients from inductive switching, ESD, and lightning-induced surges without polarity sensitivity. Its glass-passivated junction ensures stable breakdown behavior and low incremental surge resistance under repetitive stress.
Rated for -55 °C to +150 °C operating junction temperature and validated per ANSI/IEEE C62.35 standards, SMB8J16CAHM3_B/H maintains consistent clamping performance across automotive thermal profiles while meeting JESD201 Class 2 whisker resistance and JEDEC J-STD-020 MSL 1 reflow requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 16 V - maximum continuous reverse working voltage before clamping initiates; defines safe operating margin for 12 V automotive systems. |
| VBR min/max | 17.8 V / 19.7 V at 1.0 mA - guaranteed breakdown threshold ensures predictable turn-on during overvoltage events. |
| VC @ IPPM | 26.0 V at 30.8 A - clamping voltage limits downstream IC stress during 800 W transient energy absorption. |
| PPPM | 800 W (10/1000 µs) - peak surge power handling capacity suitable for ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 Level 3 compliance. |
| ID @ VWM | <1.0 µA - ultra-low reverse leakage preserves signal integrity and battery life in always-on sensor nodes. |
| TJ max | +150 °C - enables deployment in engine bay, transmission control, and under-hood modules without derating. |
| AEC-Q101 | Qualified - certified for automotive electronic systems requiring zero defects and long-term reliability under thermal cycling and vibration stress. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, matte tin-plated leads solderable per J-STD-002 and JESD22-B102. No polarity marking - bidirectional operation eliminates cathode/anode orientation concerns during placement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Both terminals function identically; conducts surge current in either direction when voltage exceeds ±17.8 V. |
| Cathode Band (absent) | Polarity indicator | Not applicable - bidirectional construction omits marking; PCB layout requires no orientation constraint. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines (e.g., differential CAN bus, LIN, RS-485) without external polarity management. |
| AEC-Q101 qualification | Validated for automotive use including temperature cycling, mechanical shock, and humidity testing - supports ASIL-B system integration. |
| MSL Level 1 rating | Permits standard SMT reflow up to 260 °C peak without preconditioning - simplifies high-volume manufacturing and avoids moisture-related popcorning. |
| Glass-passivated junction | Ensures stable VBR over lifetime and immunity to humidity-induced parameter drift - critical for 15+ year automotive service life. |
| Low clamping ratio (VC/VBR ≈ 1.46) | Minimizes voltage overshoot during surge events, reducing risk of latch-up or gate oxide damage in protected MOSFETs and microcontrollers. |
Applications
| Automotive Sensor Interface | CAN Bus Protection |
|---|---|
|
Use Scenario: Protecting analog outputs of pressure, temperature, and position sensors in engine control units exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional TVS placed at sensor harness entry point to clamp transients before reaching ADC input or signal conditioning op-amp. Use Value: Maintains 16 V VWM margin above 12 V nominal supply while limiting clamped voltage to 26.0 V - preventing ADC saturation and preserving measurement accuracy during ISO 7637-2 Pulse 5a events. |
Use Scenario: Safeguarding CANH/CANL lines in body control modules against ESD (IEC 61000-4-2) and coupled surges from nearby high-current actuators. IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS installed differential-mode across CAN bus pair to suppress common-mode transients without distorting signal edges. Use Value: 26.0 V clamping voltage ensures CAN transceiver I/O remains within absolute maximum ratings (typically ±40 V), avoiding permanent damage during 1 kV/500 A surge tests. |
| Industrial PLC Analog Inputs | Smart Actuator Power Stage |
|
Use Scenario: Shielding 4–20 mA current loop inputs in programmable logic controllers from field wiring induced surges in factory automation environments. IC Role / Device Role / Timing Role: TVS mounted directly at terminal block entry to shunt surge energy before reaching precision current-to-voltage converter and isolation amplifier. Use Value: 800 W PPPM rating handles repetitive 10/1000 µs surges per IEC 61000-4-5 Level 3, while sub-1 µA leakage prevents offset error in µA-level loop current sensing. |
Use Scenario: Protecting gate drivers and half-bridge MOSFETs in motorized HVAC actuators subjected to inductive kickback from brushed DC motors. IC Role / Device Role / Timing Role: Bidirectional TVS placed across motor winding terminals to clamp flyback voltage spikes before they reach driver IC supply rails or logic inputs. Use Value: 150 °C TJ max and AEC-Q101 qualification ensure sustained operation in sealed actuator housings where ambient temperatures exceed 105 °C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMB8J16CAHE3_B/H | Same electrical specs, RoHS-compliant but not halogen-free; uses standard tin plating instead of halogen-free matte tin. | Lacks halogen-free certification required for certain Tier 1 automotive programs and EU green procurement mandates. | Select SMB8J16CAHE3_B/H only if halogen-free material compliance is not contractually mandated. |
| SMAJ16CA | Lower PPPM (400 W), larger SMA package (DO-214AC), higher RθJA (110 °C/W), same VWM/VC specs. | Insufficient surge margin for ISO 7637-2 Pulse 5a; unsuitable for under-hood locations due to thermal limitations. | Use SMAJ16CA only in cost-sensitive, non-automotive applications with lower surge threat profiles and adequate board-level heat sinking. |
Compared with SMB8J16CAHE3_B/H, SMB8J16CAHM3_B/H adds halogen-free compliance without sacrificing performance; versus SMAJ16CA, it doubles surge power handling and improves thermal resistance by 38 °C/W - enabling compact, high-reliability placement in space-constrained automotive modules.
Availability
SMB8J16CAHM3_B/H is available at Aetrix Electronics and suitable for automotive sensor protection, CAN/LIN bus hardening, industrial PLC I/O conditioning, and smart actuator power stage safeguarding requiring stable component supply across multi-year production cycles.
Supply support for SMB8J16CAHM3_B/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 high-reliability diodes, MOSFETs, and passive components for automotive, industrial, and computing markets.
SMB8J16CAHM3_B/H belongs to Vishay's TRANSZORB® family of high-power-density TVS diodes, engineered specifically for AEC-Q101-compliant transient suppression in harsh-environment vehicle electronics and mission-critical industrial controls.
FAQ
What is the clamping voltage of SMB8J16CAHM3_B/H at its rated peak pulse current?
The SMB8J16CAHM3_B/H has a maximum clamping voltage (VC) of 26.0 V when subjected to its rated peak pulse current (IPPM) of 30.8 A using 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 - a key parameter for ensuring compatibility with 3.3 V or 5 V logic interfaces downstream of the SMB8J16CAHM3_B/H.
Is SMB8J16CAHM3_B/H suitable for automotive applications?
Yes, SMB8J16CAHM3_B/H is AEC-Q101 qualified and manufactured with halogen-free, RoHS-compliant materials - meeting stringent automotive reliability, environmental, and safety requirements. Its -55 °C to +150 °C operating range, MSL Level 1 reflow rating, and validation against ISO 7637-2 and IEC 61000-4-5 make it appropriate for engine control units, body electronics, and ADAS sensor modules where SMB8J16CAHM3_B/H provides certified surge resilience.
How does the bidirectional design of SMB8J16CAHM3_B/H affect PCB layout?
The bidirectional nature of SMB8J16CAHM3_B/H eliminates polarity constraints: no cathode band marking exists, and either terminal may connect to either side of a differential line or floating node. This simplifies automated placement, reduces assembly errors, and allows symmetrical routing - especially beneficial for CAN bus, RS-485, or audio signal paths where SMB8J16CAHM3_B/H protects both conductors with identical clamping behavior regardless of transient polarity.
What is the maximum reverse leakage current for SMB8J16CAHM3_B/H at its stand-off voltage?
At its 16 V stand-off voltage (VWM), the SMB8J16CAHM3_B/H exhibits a maximum reverse leakage current (ID) of 1.0 µA at 25 °C. This ultra-low leakage preserves signal fidelity in high-impedance sensor interfaces and minimizes quiescent power loss in battery-powered automotive modules - a critical specification confirmed in Vishay's official Electrical Characteristics table for SMB8J16CA devices.
Does SMB8J16CAHM3_B/H require special PCB pad design for thermal performance?
Yes - Vishay specifies mounting on 0.2" x 0.2" (5.0 mm x 5.0 mm) copper pads per terminal to achieve rated 800 W peak pulse power. Smaller pads cause thermal derating per Figure 2 in the datasheet; undersized layouts reduce IPPM capability and increase junction temperature rise. For optimal SMB8J16CAHM3_B/H performance in automotive applications, follow the recommended pad dimensions and ensure internal ground planes are thermally connected via multiple vias beneath each pad.
SMB8J16CAHM3_B/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 16V
- Voltage - Breakdown (Min):
- 17.8V
- Voltage - Clamping (Max) @ Ipp:
- 16V
- 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_B/H FAQ
1.How can I place an order for SMB8J16CAHM3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB8J16CAHM3_B/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_B/H reliable?
The price and inventory of SMB8J16CAHM3_B/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_B/H is usually 5 days.
3.What payment methods are accepted for SMB8J16CAHM3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB8J16CAHM3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB8J16CAHM3_B/H?
SMB8J16CAHM3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB8J16CAHM3_B/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_B/H?
For technical support, including SMB8J16CAHM3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB8J16CAHM3_B/H requirements.
6.How does Aetrix verify that SMB8J16CAHM3_B/H is sourced from the original manufacturer or authorized distributors?
All SMB8J16CAHM3_B/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_B/H meets industry standards.
7.What is the process for return or replacement of SMB8J16CAHM3_B/H?
All SMB8J16CAHM3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with SMB8J16CAHM3_B/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_B/H part is unused and in its original packaging.
Return procedure for SMB8J16CAHM3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB8J16CAHM3_B/H Tags
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