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Vishay General Semiconductor - Diodes Division SMCJ16A-M3/9AT
- Part No.:
- SMCJ16A-M3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ16A-M3/9AT.pdf
- Description:
- TVS DIODE 16VWM 26VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,755
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Product details
Overview
SMCJ16A-M3/9AT from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for robust overvoltage protection of DC power rails and signal lines. It features a 16 V standoff voltage (VWM), 26.0 V maximum clamping voltage (VC) at 57.7 A peak pulse current (IPPM), and 1500 W peak pulse power (10/1000 µs waveform), commonly deployed to safeguard MOSFET gate drivers and automotive sensor interfaces against ESD and load dump transients.
For engineers reviewing the SMCJ16A-M3/9AT datasheet, SMCJ16A-M3/9AT pinout, SMCJ16A-M3/9AT application, or SMCJ16A-M3/9AT equivalent, this page delivers verified electrical parameters, thermal derating behavior, polarity marking convention, halogen-free RoHS compliance status, and direct alternatives with documented clamping and leakage differences - all critical for automotive-grade board-level surge protection design.
Technical Context
The SMCJ16A-M3/9AT operates as a unidirectional avalanche diode, triggering when reverse voltage exceeds its 17.8–19.7 V breakdown range (VBR at 1 mA). Its glass-passivated junction ensures stable VBR tolerance and low temperature coefficient (0.089 %/°C), enabling predictable clamping across -55 °C to +150 °C operating range.
With 1.0 µA max reverse leakage at 16 V (VWM) and 75 °C/W junction-to-ambient thermal resistance, it supports high-density PCB layouts without active cooling. Its 10/1000 µs surge rating and 200 A IFSM (8.3 ms half-sine) make it suitable for both repetitive switching transients and infrequent high-energy events like ISO 7637-2 Pulse 5a.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 16 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC rail margin for 12 V automotive systems. |
| VC @ IPPM | 26.0 V - Clamped voltage at 57.7 A peak pulse current; determines protected circuit's maximum transient exposure level. |
| IPPM | 57.7 A - Peak surge current capability under 10/1000 µs waveform; validates immunity to common load-dump and inductive kick events. |
| PPPM | 1500 W - Peak pulse power handling; enables single-device protection for medium-power DC inputs without parallel staging. |
| TJ max | +150 °C - Maximum junction temperature; supports under-hood automotive placement with standard thermal pad layout. |
| RθJA | 75 °C/W - Junction-to-ambient thermal resistance on 8 mm × 8 mm copper pads; informs thermal relief requirements for sustained surge duty. |
| Leakage @ VWM | 1.0 µA - Reverse leakage at 16 V; ensures minimal standby power loss in always-on vehicle modules. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, halogen-free, RoHS-compliant, M3 suffix. Cathode indicated by molded band on case end; anode is opposite terminal. Designed for automated placement and reflow soldering per J-STD-020 MSL Level 1 (260 °C peak).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Reverse-biased avalanche node | Connected to protected line; conducts during overvoltage to shunt energy to ground or lower-potential rail. |
| Anode | Reference potential node | Typically tied to system ground or negative rail; establishes polarity-dependent clamping direction. |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SMC package | Enables compact placement near IC power pins or connectors without height interference in stacked assemblies. |
| Glass-passivated junction | Ensures long-term VBR stability and reduced parameter drift under thermal cycling and humidity stress. |
| 1500 W peak pulse power | Eliminates need for external series impedance or multi-stage protection in many 12 V automotive subsystems. |
| Halogen-free & RoHS-compliant (M3) | Meets automotive OEM environmental requirements and simplifies material declaration for Tier 1 BOM compliance. |
| AEC-Q101 qualification path | Base P/NHM3 variant available; confirms reliability for automotive applications including engine control and ADAS sensors. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 12 V battery-fed ECUs from ISO 7637-2 Pulse 1 (inductive switch-off) and Pulse 5a (load dump). IC Role / Device Role / Timing Role: Unidirectional TVS placed between power input and ground to clamp transients below MOSFET drain-source breakdown. Use Value: Limits peak voltage to 26.0 V during 57.7 A surges, preserving 30 V-rated power management ICs without derating. |
Use Scenario: Shielding analog output lines of pressure or temperature sensors from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-leakage (1.0 µA) TVS mounted at connector entry point to prevent latch-up in precision ADC front-ends. Use Value: Maintains signal integrity with <1 pF junction capacitance (typ.) while suppressing >8 kV contact ESD per IEC 61000-4-2. |
| DC Motor Drive Gate Protection | Telecom Power Input Protection |
|
Use Scenario: Safeguarding half-bridge gate drivers in BLDC motor controllers against shoot-through-inducing voltage spikes. IC Role / Device Role / Timing Role: Fast-response (<1 ps) avalanche diode clamping gate-source voltage to prevent unintended turn-on during switching transitions. Use Value: Achieves sub-10 ns response time and 26.0 V clamping, keeping gate drive within ±20 V absolute max rating of SiC and GaN FETs. |
Use Scenario: Hardening 48 V telecom power supplies against lightning-induced surges on primary-side inputs. IC Role / Device Role / Timing Role: Primary-stage TVS absorbing up to 1500 W pulses before downstream MOVs or crowbar circuits activate. Use Value: Provides first-line defense with defined VC/IPPM ratio, reducing stress on secondary protection and improving system MTBF. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ16A-M3/8A | Lower PPPM (400 W), smaller SMA package, same VWM/VC specs but reduced IPPM (15.6 A). | Restricted to low-energy transients (e.g., IEC 61000-4-5 Level 2); unsuitable for automotive load dump. | Select when space-constrained and surge threat is limited to ESD or microsecond-level noise. |
| SMCJ16CA-M3/9AT | Bidirectional variant; identical VWM, VC, and PPPM, but symmetric clamping in both polarities. | Required for AC-coupled or floating signal lines where polarity reversal may occur (e.g., RS-485, CAN FD). | Choose only if bidirectional protection is mandated; unidirectional SMCJ16A-M3/9AT offers lower leakage and simpler grounding. |
Compared with SMAJ16A-M3/8A, the SMCJ16A-M3/9AT delivers 3.75× higher surge capacity in the same footprint family, enabling single-device compliance with ISO 16750-2; versus SMCJ16CA-M3/9AT, it provides 1.0 µA vs. 2.0 µA leakage at VWM, improving efficiency in always-on automotive modules.
Availability
SMCJ16A-M3/9AT is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor systems, and telecom power supply designs requiring stable component supply, halogen-free compliance, and AEC-Q101 traceability path.
Supply support for SMCJ16A-M3/9AT 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 SMCJ series was engineered specifically for high-energy transient suppression in harsh environments, emphasizing stable clamping, low leakage, and automotive-grade process control - with M3 suffix denoting halogen-free construction for sustainable manufacturing.
FAQ
What is the maximum clamping voltage of the SMCJ16A-M3/9AT under rated surge conditions?
The SMCJ16A-M3/9AT has a maximum clamping voltage (VC) of 26.0 V when subjected to its rated 57.7 A peak pulse current (IPPM) using the standardized 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and guarantees that protected downstream circuitry will not experience voltages exceeding 26.0 V during such transients. The SMCJ16A-M3/9AT achieves this clamping performance while maintaining tight VBR tolerance (17.8–19.7 V) and low temperature coefficient (0.089 %/°C).
Is the SMCJ16A-M3/9AT suitable for automotive applications requiring AEC-Q101 qualification?
The SMCJ16A-M3/9AT itself is not AEC-Q101 qualified; however, Vishay offers the functionally identical HM3-suffix variant (e.g., SMCJ16A-HM3/9AT) which carries full AEC-Q101 qualification for automotive use. The SMCJ16A-M3/9AT shares the same electrical specifications, SMC package, and halogen-free RoHS compliance, making it suitable for commercial and industrial applications where AEC-Q101 is not mandated. For automotive designs, engineers should specify the HM3 version to ensure qualification traceability.
How does the SMCJ16A-M3/9AT differ from the bidirectional SMCJ16CA-M3/9AT?
The SMCJ16A-M3/9AT is unidirectional, with polarity marked by a cathode band and reverse leakage of 1.0 µA at 16 V, whereas the SMCJ16CA-M3/9AT is bidirectional, unmarked, and exhibits 2.0 µA leakage at the same voltage due to dual-junction structure. Both share identical VWM (16 V), VC (26.0 V), and PPPM (1500 W), but the SMCJ16A-M3/9AT is preferred for DC rail protection where polarity is fixed, offering lower leakage and simpler grounding. The SMCJ16A-M3/9AT must not be substituted for SMCJ16CA-M3/9AT in AC or floating applications without circuit review.
What is the thermal resistance and recommended pad layout for optimal performance of the SMCJ16A-M3/9AT?
The SMCJ16A-M3/9AT has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on minimum recommended 8.0 mm × 8.0 mm copper pads per terminal, per Vishay's datasheet Figure 2. This pad size balances thermal dissipation with PCB real estate constraints. Larger copper areas reduce RθJA further, but the specified layout ensures reliable operation up to +150 °C junction temperature under repetitive surge conditions. The SMCJ16A-M3/9AT uses matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 for robust solder joint integrity.
Can the SMCJ16A-M3/9AT be used in place of older SMAJ or SMBJ series TVS diodes?
The SMCJ16A-M3/9AT is not a drop-in replacement for SMAJ or SMBJ series due to its larger SMC (DO-214AB) package - it requires revised land pattern and stencil design. While it offers superior 1500 W surge capability versus SMAJ16A (400 W) or SMBJ16A (600 W), the physical dimensions (7.11 mm × 6.22 mm body) exceed those of SMA (4.5 mm × 2.7 mm) and SMB (6.2 mm × 3.6 mm). Engineers upgrading protection must verify mechanical clearance, thermal pad area, and assembly compatibility. The SMCJ16A-M3/9AT delivers higher reliability for demanding applications but mandates layout revision.
SMCJ16A-M3/9AT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 16V
- Voltage - Breakdown (Min):
- 17.8V
- Voltage - Clamping (Max) @ Ipp:
- 26V
- Current - Peak Pulse (10/1000µs):
- 57.7A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
SMCJ16A-M3/9AT FAQ
1.How can I place an order for SMCJ16A-M3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ16A-M3/9AT 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 SMCJ16A-M3/9AT reliable?
The price and inventory of SMCJ16A-M3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ16A-M3/9AT is usually 5 days.
3.What payment methods are accepted for SMCJ16A-M3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ16A-M3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ16A-M3/9AT?
SMCJ16A-M3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ16A-M3/9AT 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 SMCJ16A-M3/9AT?
For technical support, including SMCJ16A-M3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ16A-M3/9AT requirements.
6.How does Aetrix verify that SMCJ16A-M3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCJ16A-M3/9AT 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 SMCJ16A-M3/9AT meets industry standards.
7.What is the process for return or replacement of SMCJ16A-M3/9AT?
All SMCJ16A-M3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ16A-M3/9AT, 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 SMCJ16A-M3/9AT part is unused and in its original packaging.
Return procedure for SMCJ16A-M3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ16A-M3/9AT Tags
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