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Taiwan Semiconductor Corporation SMBJ16CAH
- Part No.:
- SMBJ16CAH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ16CAH.pdf
- Description:
- TVS DIODE 16VWM 26VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,805
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Product details
Overview
SMBJ16CAH from Taiwan Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in DO-214AA (SMB) package, designed for high-energy ESD and surge protection in automotive and industrial power rails. It features a 16 V working stand-off voltage (VWM), 17.8–19.7 V breakdown voltage (VBR), 24.2 A peak pulse current (IPP), 26.0 V maximum clamping voltage (VC@IPP), and 600 W peak pulse power (PPK) with <1.0 ps response time - deployed in CAN bus interfaces and 12 V DC power inputs.
For engineers reviewing the SMBJ16CAH datasheet, SMBJ16CAH pinout, SMBJ16CAH application, or SMBJ16CAH equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, low leakage (<1 µA at VWM), and DO-214AA thermal performance (RθJA = 55 °C/W).
Technical Context
The SMBJ16CAH operates as a silicon avalanche diode with glass-passivated junction, enabling fast, repeatable clamping during transients such as load dump or inductive switching. Its bidirectional configuration supports symmetric protection without polarity sensitivity, making it suitable for AC-coupled signal lines and floating DC buses.
It meets AEC-Q101 stress requirements including temperature cycling, HTRB, and mechanical robustness, and complies with ISO 7637-2 test pulses for automotive electronics. Thermal design leverages RθJC = 10 °C/W and RθJA = 55 °C/W to sustain 3 W steady-state dissipation at 25 °C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 16 V - Maximum continuous reverse operating voltage before clamping initiates |
| VBR min/max | 17.8 / 19.7 V @ IT = 1 mA - Ensures reliable avalanche conduction onset across process variation |
| VC@IPP | 26.0 V @ IPP = 24.2 A - Limits downstream voltage stress during 10/1000 µs surge events |
| PPK | 600 W - Sustains high-energy transients per ISO 7637-2 Pulse 1 (inductive switch-off) |
| ID@VWM | <1 µA - Minimizes standby power loss in always-on systems like automotive body controllers |
| TJ max | +150 °C - Enables operation in under-hood environments with minimal derating |
| Package | DO-214AA (SMB) - Standard surface-mount footprint compatible with automated assembly and IPC-7351B land patterns |
Pinout & Package
DO-214AA (SMB) package: molded plastic case with matte tin-plated leads, polarity indicated by cathode band; weight ≈ 0.090 g; UL 94V-0 rated compound; JESD201 Class 2 whisker resistant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (marked end) | Transient return path (bidirectional) | Provides symmetrical clamping to ground or rail in either direction; no polarity dependency |
| Cathode (banded end) | Transient return path (bidirectional) | Same functional role as anode; device behaves identically regardless of terminal orientation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive under-hood use including temperature cycling, HTRB, and mechanical shock |
| ISO 7637-2 compliant | Withstands Pulse 1 (inductive load dump), Pulse 2a/2b (battery disconnect), and Pulse 3a/3b (switching noise) |
| Fast response time | <1.0 ps - Clamps before transient energy couples into protected ICs or microcontrollers |
| Low leakage current | <1 µA at 16 V - Prevents battery drain in always-powered vehicle modules |
| Halogen-free & RoHS | Complies with IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for green manufacturing |
Applications
| Automotive Power Rail Protection | CAN Bus Transient Suppression |
|---|---|
Use Scenario: 12 V battery-fed ECUs exposed to load dump and jump-start surges. IC Role / Device Role / Timing Role: Bidirectional TVS placed between power rail and ground to clamp transients before they reach PMICs or MCU power pins. Use Value: Limits rail voltage to ≤26.0 V during 600 W surges, preventing overvoltage damage to 3.3 V/5 V logic and analog circuitry. | Use Scenario: High-speed CAN FD networks in ADAS domain controllers subject to EFT and ESD. IC Role / Device Role / Timing Role: Differential-line TVS across CAN_H/CAN_L to absorb common-mode transients while preserving signal integrity. Use Value: Sub-nanosecond response ensures clamping occurs before CAN transceiver input stages saturate or latch up. |
| Industrial Sensor Interface Protection | LED Driver Input Surge Mitigation |
Use Scenario: 24 V fieldbus sensors connected to PLC I/O modules via long cables. IC Role / Device Role / Timing Role: Standoff-rated TVS on sensor supply line to suppress induced lightning surges and switching noise. Use Value: 16 V VWM allows compatibility with 24 V nominal systems while clamping at 26.0 V to protect downstream LDOs and ADC references. | Use Scenario: Constant-current LED drivers powered from unregulated 12–24 V supplies in outdoor lighting. IC Role / Device Role / Timing Role: Primary surge shunt on driver input to prevent MOSFET gate oxide rupture and controller reset. Use Value: 600 W PPK rating handles repetitive 10/1000 µs surges from nearby motor starts without degradation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ16CA | Same DO-214AC (SMA) package; slightly higher VC@IPP (27.7 V); identical VWM/VBR range | Lower thermal mass (RθJA = 65 °C/W vs. 55 °C/W) limits sustained surge duty cycle | Acceptable where board space permits SMA footprint and thermal margin is sufficient |
| ON Semiconductor 1.5SMC16CA | DO-214AB (SMC) package; larger size; same electrical specs but higher IPP (27.1 A) and lower VC (25.5 V) | Higher PPK (1500 W) enables single-device protection for higher-energy systems | Preferred when PCB layout allows larger SMC footprint and higher surge immunity is required |
Compared with SMBJ16CAH, SMAJ16CA offers identical clamping performance in a smaller SMA package but with reduced thermal capability, while 1.5SMC16CA delivers superior surge handling in a larger SMC form factor - choice depends on board area, thermal budget, and system-level surge severity.
Availability
SMBJ16CAH is available at Aetrix Electronics and suitable for automotive ECU designs, industrial sensor nodes, CAN FD communication modules, and LED driver input stages requiring stable component supply across extended production lifecycles.
Supply support for SMBJ16CAH 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated semiconductor manufacturer specializing in discrete power devices, TVS diodes, rectifiers, and MOSFETs for automotive, industrial, and consumer markets.
The SMBJH series was developed specifically for AEC-Q101-compliant transient suppression in harsh automotive environments, emphasizing low clamping voltage, fast response, and robust thermal performance in compact SMB packages.
FAQ
What is the clamping voltage of SMBJ16CAH under a 10/1000 µs surge?
The SMBJ16CAH has a maximum clamping voltage (VC) of 26.0 V when subjected to its rated peak pulse current of 24.2 A using the standard 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and guarantees that protected circuitry sees no more than 26.0 V during defined surge events - critical for safeguarding 3.3 V and 5 V logic rails downstream of the SMBJ16CAH.
Is SMBJ16CAH suitable for automotive applications?
Yes, SMBJ16CAH is AEC-Q101 qualified and explicitly tested to meet ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b requirements. Its DO-214AA package, glass-passivated junction, and guaranteed operation from –55 °C to +150 °C make SMBJ16CAH appropriate for engine control units, body electronics, and infotainment power supplies in automotive platforms.
How does SMBJ16CAH differ from unidirectional SMBJ16H?
SMBJ16CAH is bidirectional with symmetrical clamping in both polarities, while SMBJ16H is unidirectional and only clamps in reverse bias. SMBJ16CAH has no polarity marking requirement in circuit layout and supports AC-coupled or floating-bus applications - unlike SMBJ16H, which requires correct cathode orientation relative to ground. Both share identical VWM (16 V) and PPK (600 W), but SMBJ16CAH's VBR is specified for bidirectional testing.
What is the maximum leakage current of SMBJ16CAH at its working voltage?
The SMBJ16CAH exhibits a maximum blocking leakage current (ID) of 1 µA when biased at its full working stand-off voltage of 16 V. This ultra-low leakage ensures minimal power loss in battery-backed or always-on systems - such as automotive telematics modules - where cumulative standby current must remain below microamp thresholds to avoid premature battery depletion.
Does SMBJ16CAH require special PCB layout considerations?
Yes - to preserve its <1.0 ps response, SMBJ16CAH must be placed as close as possible to the protected node with short, low-inductance traces. The DO-214AA footprint should follow TSC's recommended pad layout (7.0 × 6.2 mm), and ground connections must use multiple vias to a solid ground plane. Avoid routing sensitive signals near the TVS body, as its junction capacitance (≈250 pF at 0 V) can couple noise if improperly isolated.
SMBJ16CAH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AA, SMB
- Series:
- SMBJH
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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):
- 24.2A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMBJ16CAH FAQ
1.How can I place an order for SMBJ16CAH through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ16CAH 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 SMBJ16CAH reliable?
The price and inventory of SMBJ16CAH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ16CAH is usually 5 days.
3.What payment methods are accepted for SMBJ16CAH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ16CAH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ16CAH?
SMBJ16CAH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ16CAH 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 SMBJ16CAH?
For technical support, including SMBJ16CAH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ16CAH requirements.
6.How does Aetrix verify that SMBJ16CAH is sourced from the original manufacturer or authorized distributors?
All SMBJ16CAH 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 SMBJ16CAH meets industry standards.
7.What is the process for return or replacement of SMBJ16CAH?
All SMBJ16CAH units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ16CAH, 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 SMBJ16CAH part is unused and in its original packaging.
Return procedure for SMBJ16CAH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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