My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMC3K100CAHM3_A/H
- Part No.:
- SMC3K100CAHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMC3K100CAHM3_A/H.pdf
- Description:
- 3KW, 100V 5%,BIDIR,SMC TVS
- Quantity:
- Payment:
- Shipping:
Inventory:219
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMC3K100CAHM3_A from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in automotive and industrial power rails. It delivers 3000 W peak pulse power (10/1000 μs), clamps at 162 V under 18.5 A surge, and features a 100 V stand-off voltage with <1.0 μA leakage at rated voltage - deployed to safeguard MOSFETs and sensor signal lines against ISO 7637-2 Pulse 1/2a/3a/3b transients.
For engineers reviewing the SMC3K100CAHM3_A datasheet, SMC3K100CAHM3_A pinout, SMC3K100CAHM3_A application, or SMC3K100CAHM3_A equivalent, this device is selected for high-energy transient suppression in 12 V automotive systems where AEC-Q101 qualification, low clamping voltage, and MSL Level 1 reflow compatibility are mandatory design requirements.
Technical Context
This TVS operates as a voltage-clamped shunt protector: when reverse voltage exceeds its 111–123 V breakdown range (tested at 1 mA), it avalanches rapidly (<1 ns response) to divert surge current away from downstream circuitry. Its bidirectional architecture enables symmetric protection on AC-coupled or floating lines without polarity constraints.
Thermal performance is defined by RthJA = 90 °C/W (FR4, 2 oz copper) and RthJM = 4.0 °C/W, supporting sustained operation up to TJ = +175 °C. The device meets IEC 61000-4-2 ESD immunity (±30 kV contact/air) and is qualified to AEC-Q101 for automotive under-hood applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VWM) | 100 V - maximum continuous reverse operating voltage before significant leakage begins; sets upper limit for normal system rail voltage. |
| Breakdown Voltage (VBR) | 111–123 V at 1 mA - precise avalanche initiation threshold; ensures reliable triggering above nominal rail with margin. |
| Clamping Voltage (VC) | 162 V at 18.5 A (10/1000 μs) - actual voltage seen by protected IC during worst-case surge; determines minimum safe withstand rating of downstream components. |
| Peak Pulse Power (PPPM) | 3000 W (10/1000 μs) - energy-handling capacity for standard automotive load-dump and switching transients per ISO 7637-2. |
| Leakage Current (ID) | <1.0 μA at 100 V - negligible standby power loss and minimal impact on high-impedance sensor bias networks. |
| ESD Rating | ±30 kV per IEC 61000-4-2 (contact/air) - protects against human-body-model electrostatic discharge during handling and operation. |
| Operating Temperature | −55 °C to +175 °C - supports under-hood automotive placement and industrial environments with wide thermal cycling. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, halogen-free, RoHS-compliant, AEC-Q101 qualified. Matte tin-plated leads, J-STD-002 solderable. Molding compound UL 94 V-0 rated.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Marked Band) | Reference terminal for unidirectional conduction path | Bidirectional device - no functional cathode/anode; band denotes orientation for consistent PCB layout and visual inspection only. |
| Anode | Reference terminal opposite marking band | Electrically symmetric with cathode; both terminals behave identically under reverse/forward surge conditions. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection on AC, differential, or floating signal/power lines without polarity concerns. |
| 30 kW capability (8/20 μs) | Handles high-current lightning-induced surges per IEC 61000-4-5, extending protection beyond standard automotive pulses. |
| AEC-Q101 qualification | Validated reliability for automotive powertrain, body control, and ADAS modules requiring zero-failure field performance. |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without moisture sensitivity concerns or baking requirements. |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients, improving protection margin for sensitive gate drivers and microcontrollers. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump (ISO 16750-2 Pulse b) and inductive switching spikes (ISO 7637-2 Pulse 1/2a). IC Role / Device Role / Timing Role: Shunt-type transient suppressor placed directly across input power pins of DC/DC converters or MCU power supplies. Use Value: Clamps to 162 V at 18.5 A, limiting stress on 36 V-rated input capacitors and preventing brownout or latch-up in downstream regulators. |
Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) connected to vehicle CAN or LIN buses against ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance (typ. 100 pF at 0 V) parallel clamp on differential or single-ended signal traces near connector entry points. Use Value: Sub-1 ns response and ±30 kV IEC 61000-4-2 rating prevent latch-up or parametric shift in precision op-amps and ADC front-ends. |
| Telecom Power Supply Input | Motor Drive Gate Driver Protection |
|
Use Scenario: Secondary-side overvoltage suppression in telecom AC/DC adapters exposed to lightning-induced surges on AC mains input. IC Role / Device Role / Timing Role: Primary-side TVS placed across bulk capacitor to absorb residual 8/20 μs surges passing through MOV-based front-end filtering. Use Value: 30 kW (8/20 μs) rating handles high-energy line transients while maintaining stable 100 V stand-off for 48 V output regulation integrity. |
Use Scenario: Protecting high-side/low-side MOSFET gate drivers in BLDC motor controllers from Miller-induced voltage spikes during fast switching. IC Role / Device Role / Timing Role: Bidirectional clamp between gate and source terminals to suppress dv/dt-induced false turn-on and gate oxide overstress. Use Value: Symmetric 162 V clamping limits gate-source voltage to safe levels (<20 V margin below 175 V max rating), preventing destructive failure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ100CA | Same 100 V VWM, but lower PPPM = 400 W (10/1000 μs); SMA package (smaller footprint, higher RthJA = 150 °C/W). | Not AEC-Q101 qualified; limited to consumer/industrial use where automotive reliability and 3000 W surge capacity are not required. | Select when board space is constrained and surge energy is ≤400 W; verify thermal derating for ambient >85 °C. |
| 1.5KE100CA | Same 100 V VWM, PPPM = 1500 W (10/1000 μs); axial DO-201 package; no AEC-Q101 or MSL Level 1 rating. | Through-hole mounting only; unsuitable for automated SMT assembly or high-vibration automotive environments. | Choose for prototyping or legacy through-hole designs where cost is prioritized over automotive compliance and surge headroom. |
Compared with SMAJ100CA and 1.5KE100CA, SMC3K100CAHM3_A provides triple the peak pulse power, automotive-grade qualification, and SMT-compatible packaging - making it the sole option among the three for production automotive power rail protection requiring ISO 7637-2 compliance and zero rework risk.
Availability
SMC3K100CAHM3_A is available at Aetrix Electronics and suitable for automotive ECU power inputs, industrial sensor interfaces, telecom power supply inputs, and motor drive gate driver circuits requiring stable component supply, long-term lifecycle support, and AEC-Q101 traceability.
Supply support for SMC3K100CAHM3_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, MOSFETs, optoelectronics, and passive components for automotive, industrial, and computing markets.
The SMC3K series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-energy transient suppression in harsh automotive and industrial environments where AEC-Q101 reliability and standardized ISO/IEC surge immunity are non-negotiable.
FAQ
What is the maximum clamping voltage of the SMC3K100CAHM3_A under a 10/1000 μs surge?
The SMC3K100CAHM3_A clamps to a maximum of 162 V when subjected to its rated peak pulse current of 18.5 A using the standard 10/1000 μs waveform. This value is measured at TA = 25 °C and defines the upper voltage limit imposed on protected circuitry during transient events - critical for ensuring downstream components remain within their absolute maximum ratings. The SMC3K100CAHM3_A maintains this clamping performance across its full operating temperature range.
Is the SMC3K100CAHM3_A suitable for automotive applications requiring AEC-Q101 qualification?
Yes, the SMC3K100CAHM3_A is explicitly AEC-Q101 qualified, as confirmed in the Vishay datasheet (Document Number: 98241, Revision: 09-Jan-2024). This qualification validates its reliability for automotive powertrain, body electronics, and ADAS modules under extended temperature cycling, humidity, and mechanical shock conditions. The SMC3K100CAHM3_A also meets ISO 7637-2 and ISO 16750-2 immunity standards, making it appropriate for under-hood and chassis-mounted deployments.
What is the junction-to-ambient thermal resistance (RthJA) of the SMC3K100CAHM3_A?
The SMC3K100CAHM3_A has a typical junction-to-ambient thermal resistance (RthJA) of 90 °C/W when mounted on a standard FR4 PCB with 2 oz copper, per JEDEC 51-2A. This value is essential for calculating maximum allowable power dissipation at elevated ambient temperatures and ensures the device remains within its 175 °C maximum junction temperature limit during repetitive surge events. The SMC3K100CAHM3_A also features a low RthJM of 4.0 °C/W for efficient heat transfer to the mounting pad.
Does the SMC3K100CAHM3_A have polarity markings, and how does that affect circuit design?
The SMC3K100CAHM3_A is a bidirectional TVS diode and carries a single band marking on one end - this band indicates physical orientation only and does not denote anode/cathode functionality. Both terminals are electrically identical, enabling symmetric placement across power rails or signal lines without regard to polarity. This simplifies layout and eliminates risk of reverse installation, and the SMC3K100CAHM3_A performs identically regardless of voltage polarity applied across its terminals.
What are the key differences between the SMC3K100CAHM3_A and the SMAJ100CA in terms of surge capability?
The SMC3K100CAHM3_A delivers 3000 W peak pulse power (10/1000 μs), whereas the SMAJ100CA is rated for only 400 W under the same waveform - a 7.5× difference in energy handling. Additionally, the SMC3K100CAHM3_A supports 30 kW (8/20 μs) for lightning-survival applications, while the SMAJ100CA lacks published 8/20 μs data. The SMC3K100CAHM3_A is also AEC-Q101 qualified and MSL Level 1 compatible, unlike the SMAJ100CA. These distinctions make the SMC3K100CAHM3_A the appropriate choice for demanding automotive and industrial surge environments.
SMC3K100CAHM3_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):
- 100V
- Voltage - Breakdown (Min):
- 111V
- Voltage - Clamping (Max) @ Ipp:
- 162V
- Current - Peak Pulse (10/1000µs):
- 18.5A
- 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)
SMC3K100CAHM3_A/H FAQ
1.How can I place an order for SMC3K100CAHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMC3K100CAHM3_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 SMC3K100CAHM3_A/H reliable?
The price and inventory of SMC3K100CAHM3_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 SMC3K100CAHM3_A/H is usually 5 days.
3.What payment methods are accepted for SMC3K100CAHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMC3K100CAHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMC3K100CAHM3_A/H?
SMC3K100CAHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMC3K100CAHM3_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 SMC3K100CAHM3_A/H?
For technical support, including SMC3K100CAHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMC3K100CAHM3_A/H requirements.
6.How does Aetrix verify that SMC3K100CAHM3_A/H is sourced from the original manufacturer or authorized distributors?
All SMC3K100CAHM3_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 SMC3K100CAHM3_A/H meets industry standards.
7.What is the process for return or replacement of SMC3K100CAHM3_A/H?
All SMC3K100CAHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMC3K100CAHM3_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 SMC3K100CAHM3_A/H part is unused and in its original packaging.
Return procedure for SMC3K100CAHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMC3K100CAHM3_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 …
