My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMC3K16CAHM3_A/H
- Part No.:
- SMC3K16CAHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMC3K16CAHM3_A/H.pdf
- Description:
- 3KW, 16V 5%,BIDIR,SMC TVS
- Quantity:
- Payment:
- Shipping:
Inventory:1,560
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMC3K16CAHM3_A from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) in SMC (DO-214AB) package, designed for robust overvoltage protection of sensitive electronics. It features 16 V standoff voltage (VWM), 17.8–19.7 V breakdown voltage (VBR), 26.0 V clamping voltage at 872 A (10/1000 μs), 3000 W peak pulse power, and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the SMC3K16CAHM3_A datasheet, SMC3K16CAHM3_A pinout, SMC3K16CAHM3_A application, or SMC3K16CAHM3_A equivalent, this device is selected for high-energy transient suppression in 12 V automotive power rails, sensor signal lines, and MOSFET gate protection where fast response (<1 ns), low clamping ratio, and MSL Level 1 reflow compatibility are critical.
Technical Context
This TVS diode operates bidirectionally to clamp both positive and negative transients without polarity marking. Its low incremental surge resistance enables stable clamping under high-current pulses such as ISO 7637-2 Pulse 1 (−150 V, 2 ms) and ISO 16750-2 Pulse b (load dump), with verified clamping performance down to −30 V / +35 V in Pulse 2a testing.
The device achieves 30 kV ESD immunity per IEC 61000-4-2 (contact/air discharge), supports junction temperatures up to +175 °C, and maintains thermal resistance of RthJA = 90 °C/W on FR4 PCB - enabling reliable operation in under-hood automotive environments and industrial control modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 16 V - maximum continuous reverse operating voltage before conduction begins; defines safe operating margin below system rail. |
| VBR (Breakdown Voltage) | 17.8–19.7 V at 1.0 mA - precise voltage threshold at which avalanche conduction initiates; ensures predictable turn-on behavior. |
| VC (Clamping Voltage) | 26.0 V at 872 A (10/1000 μs) - peak voltage seen by protected circuit during worst-case surge; determines stress on downstream ICs. |
| PPPM (Peak Pulse Power) | 3000 W - energy-handling capability for standardized 10/1000 μs waveform; validates suitability for ISO 7637-2 compliance. |
| ESD Rating | 30 kV per IEC 61000-4-2 - protects against human-body-model discharges without degradation; eliminates need for external ESD stages. |
| AEC-Q101 Qualified | Qualified for automotive applications - guarantees reliability across temperature cycling, humidity, and mechanical shock per AEC stress test requirements. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, halogen-free, RoHS-compliant, matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Molding compound meets UL 94 V-0. Polarity not marked (bidirectional).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (K) | Anode-side terminal in unidirectional convention; unused in bidirectional configuration | Not electrically distinguished - terminals are symmetrical; either end connects to protected line or ground reference. |
| Anode (A) | Cathode-side terminal in unidirectional convention; unused in bidirectional configuration | No functional distinction - device conducts identically in both directions; no polarity marking required on body. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns or external diode pairing. |
| 3000 W peak pulse power (10/1000 μs) | Meets ISO 7637-2 Pulse 1 and Pulse 2a energy requirements for 12 V automotive systems without derating. |
| 26.0 V clamping at 872 A | Clamping ratio (VC/VWM) of 1.625 ensures protected ICs see <26 V during worst-case surge - well below typical 30 V absolute max ratings. |
| MSL Level 1, 260 °C peak reflow | Supports standard lead-free reflow profiles without moisture sensitivity concerns or baking requirements. |
| UL 497B recognition (E136766) | Validates safety compliance for use in telecom and industrial equipment requiring certified transient protection. |
Applications
| Automotive Power Rail Protection | Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs, lighting modules, and body controllers from load dump and inductive switching spikes. IC Role / Device Role / Timing Role: Primary overvoltage clamp placed between power input and bulk capacitor, responding within <1 ns to suppress transients before LDOs or microcontrollers are stressed. Use Value: Withstands ISO 16750-2 Pulse b (up to 101 V, 400 ms) and clamps to ≤26 V - preventing brownout resets and latch-up in downstream logic. |
Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature, position) from ESD and cable discharge events in ADAS and chassis systems. IC Role / Device Role / Timing Role: Low-capacitance (typ. 200 pF at 0 V) shunt device placed at connector interface to divert fast transients before reaching ADC front-end or op-amp inputs. Use Value: 30 kV IEC 61000-4-2 contact discharge rating ensures immunity to field-level ESD events without signal distortion or offset drift. |
| MOSFET Gate Protection | Industrial CAN Bus Interface |
Use Scenario: Safeguarding high-side/low-side MOSFET gates in motor drivers and power converters from Miller-induced voltage spikes and gate oxide overstress. IC Role / Device Role / Timing Role: Fast-acting clamp connected between gate and source, limiting dV/dt-induced overshoot during switching transitions. Use Value: Sub-1 ns response time and 26.0 V clamping prevent gate-source breakdown (typically rated ≤20 V) while maintaining switching integrity. |
Use Scenario: Providing secondary surge protection on CAN_H/CAN_L lines in industrial automation nodes exposed to long cable runs and ground potential differences. IC Role / Device Role / Timing Role: Bidirectional shunt element placed after common-mode choke to absorb differential-mode surges exceeding transceiver's internal rating. Use Value: Clamps ISO 7637-2 Pulse 3a/b transients to <35 V - preserving signal integrity and preventing bus lockup in multi-node networks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ16CA | Same VWM (16 V), lower PPPM (600 W), SMB package (smaller footprint, higher RthJA = 110 °C/W) | Limited to lower-energy transients (e.g., IEC 61000-4-5 Level 3); unsuitable for ISO 7637-2 Pulse 1 or load dump. | Select when board space is constrained and surge energy is ≤600 W - verify thermal margin under repeated pulse conditions. |
| SMCJ16CA | Same VWM (16 V), same SMC package, but lower PPPM (1500 W) and higher VC (30.0 V at 500 A) | Marginally compliant with ISO 7637-2 Pulse 2a; fails Pulse 1 due to insufficient energy handling and higher clamping voltage. | Use only in cost-sensitive non-automotive designs where full AEC-Q101 qualification and 3000 W rating are not required. |
Compared with SMBJ16CA and SMCJ16CA, SMC3K16CAHM3_A delivers 2× higher peak power and 15 % lower clamping voltage - enabling robust protection in demanding automotive and industrial environments where failure modes include sustained overvoltage and repetitive surge exposure.
Availability
SMC3K16CAHM3_A is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor interface development, and high-reliability power supply protection requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SMC3K16CAHM3_A 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, rectifiers, and protection devices for automotive, industrial, and computing markets.
The SMC3KxxCAHM3_A series was developed specifically for AEC-Q101-compliant transient suppression in 12 V and 24 V automotive subsystems - emphasizing low clamping, high surge endurance, and seamless integration into automated SMT assembly lines.
FAQ
What is the maximum clamping voltage of SMC3K16CAHM3_A under a 10/1000 μs surge?
The maximum clamping voltage of SMC3K16CAHM3_A is 26.0 V when subjected to an 872 A peak pulse with a 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and reflects the actual voltage imposed on the protected circuit during worst-case transient events - critical for ensuring downstream components remain within their absolute maximum ratings.
Is SMC3K16CAHM3_A qualified for automotive applications?
Yes, SMC3K16CAHM3_A is AEC-Q101 qualified and explicitly rated for automotive use. It meets stringent stress tests including temperature cycling, humidity bias, mechanical shock, and high-temperature reverse bias - validated per the full AEC-Q101 standard and referenced in Vishay document 98241 revision 09-Jan-2024.
Does SMC3K16CAHM3_A have polarity markings on the package?
No, SMC3K16CAHM3_A is a bidirectional TVS diode and carries no polarity marking on the SMC (DO-214AB) package body. Both terminals are functionally identical, allowing flexible placement in PCB layouts without orientation constraints - simplifying layout and reducing assembly errors.
What is the thermal resistance junction-to-ambient (RthJA) for SMC3K16CAHM3_A?
The thermal resistance junction-to-ambient (RthJA) for SMC3K16CAHM3_A is 90 °C/W when mounted on a standard FR4 PCB with 2 oz. copper, per JEDEC 51-2A. This value enables accurate thermal modeling for continuous power dissipation and repeated surge duty cycles in enclosed automotive enclosures.
How does SMC3K16CAHM3_A perform under ISO 7637-2 Pulse 2a conditions?
Under ISO 7637-2 Pulse 2a (112 V, 50 μs, 2 Ω source), SMC3K16CAHM3_A clamps to +35 V - as confirmed in Vishay's application data (document 98241, page 4). This performance ensures safe operation of 3.3 V or 5 V logic interfaces connected to protected lines, preventing latch-up or permanent damage during inductive switch-off events.
SMC3K16CAHM3_A/H 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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 16V
- Voltage - Breakdown (Min):
- 17.8V
- Voltage - Clamping (Max) @ Ipp:
- 26V
- Current - Peak Pulse (10/1000µs):
- 115A
- Power - Peak Pulse:
- 3000W (3kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
SMC3K16CAHM3_A/H FAQ
1.How can I place an order for SMC3K16CAHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMC3K16CAHM3_A/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 SMC3K16CAHM3_A/H reliable?
The price and inventory of SMC3K16CAHM3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMC3K16CAHM3_A/H is usually 5 days.
3.What payment methods are accepted for SMC3K16CAHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMC3K16CAHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMC3K16CAHM3_A/H?
SMC3K16CAHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMC3K16CAHM3_A/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 SMC3K16CAHM3_A/H?
For technical support, including SMC3K16CAHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMC3K16CAHM3_A/H requirements.
6.How does Aetrix verify that SMC3K16CAHM3_A/H is sourced from the original manufacturer or authorized distributors?
All SMC3K16CAHM3_A/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 SMC3K16CAHM3_A/H meets industry standards.
7.What is the process for return or replacement of SMC3K16CAHM3_A/H?
All SMC3K16CAHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMC3K16CAHM3_A/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 SMC3K16CAHM3_A/H part is unused and in its original packaging.
Return procedure for SMC3K16CAHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMC3K16CAHM3_A/H Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
