My Inquiry
My Account
Vishay General Semiconductor - Diodes Division 1.5SMC180CA-M3/9AT
- Part No.:
- 1.5SMC180CA-M3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC180CA-M3/9AT.pdf
- Description:
- TVS DIODE 154VWM 246VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:9,963
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1.5SMC180CA-M3/9AT from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for high-energy surge protection in power and signal lines. It features a 180 V standoff voltage (VWM), 207 V breakdown voltage (VBR), 1500 W peak pulse power (10/1000 µs), and clamps transients to ≤246 V at 6.1 A peak pulse current - deployed in automotive sensor interfaces, industrial I/O modules, and telecom line protection.
For engineers reviewing the 1.5SMC180CA-M3/9AT datasheet, 1.5SMC180CA-M3/9AT pinout, 1.5SMC180CA-M3/9AT application, or 1.5SMC180CA-M3/9AT equivalent, key selection criteria include bidirectional clamping capability, DO-214AB package thermal performance (RθJA = 75 °C/W), AEC-Q101 qualification eligibility (via HM3 suffix), and compliance with UL 497B for telecom surge protection.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, delivering identical clamping behavior during positive and negative transients. Its glass-passivated junction ensures stable leakage (<1.0 µA at VWM) and fast response (<1.0 ns), while the SMC (DO-214AB) package supports automated placement and meets J-STD-020 MSL Level 1 (260 °C peak reflow).
The device sustains repetitive 10/1000 µs surges at 0.01% duty cycle and derates linearly above 25 °C ambient per Fig. 2. With a maximum junction temperature of +150 °C and thermal resistance of 15 °C/W junction-to-leads, it enables reliable operation on standard 8.0 mm × 8.0 mm copper pads without external heatsinking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 154 V - Maximum continuous reverse voltage before conduction begins; defines safe operating margin below clamping threshold. |
| VBR (Breakdown) | 171–189 V at 1 mA - Confirmed avalanche onset range; ensures predictable turn-on during overvoltage events. |
| VC (Clamping) | 246 V at IPPM = 6.1 A - Peak voltage seen by protected circuit under full-rated 10/1000 µs surge; determines system-level stress. |
| PPPM | 1500 W - Surge energy handling capacity per IEEE C62.35; validates suitability for lightning-induced transients (IEC 61000-4-5 Level 4). |
| ID (Leakage) | <1.0 µA at VWM - Minimal standby power loss and signal integrity impact in high-impedance circuits. |
| TJ max | +150 °C - Enables deployment in under-hood automotive environments and industrial enclosures without thermal derating penalties. |
| Package | SMC (DO-214AB) - Standardized surface-mount outline with 0.320" × 0.246" footprint; compatible with IPC-7351B land patterns. |
Pinout & Package
Package: SMC (DO-214AB), molded case with matte tin-plated leads, UL 94 V-0 rated compound, polarity-unmarked for bidirectional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative half-cycle) | Conducts during negative surges; symmetrical with cathode due to bidirectional structure. |
| Cathode | Transient current entry (positive half-cycle) | Conducts during positive surges; functionally identical to anode in CA-suffix devices. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR, VC, and IPPM in both directions - eliminates polarity concerns in AC-coupled or floating lines. |
| 1500 W peak pulse rating | Validated per 10/1000 µs waveform - meets IEC 61000-4-5 surge immunity requirements for industrial and automotive end equipment. |
| Halogen-free & RoHS-compliant (M3) | Complies with JEDEC J-STD-20 and JESD201 Class 2 whisker resistance - suitable for lead-free reflow and long-term reliability programs. |
| AEC-Q101 qualification path | HM3 suffix variant available - enables use in automotive powertrain and body electronics requiring qualified TVS components. |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients - critical for protecting sensitive gate drivers and ADC inputs. |
Applications
| Automotive Sensor Protection | Industrial Ethernet PHY Interface |
|---|---|
Use Scenario: Protecting CAN FD and LIN bus transceivers from load-dump and jump-start induced surges in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional transient clamp placed directly at connector entry point, shunting surge energy to ground before reaching PHY IC. Use Value: Maintains signal integrity under ±100 V/10/1000 µs transients while adding <0.5 pF capacitance - no data rate degradation on 5 Mbps CAN FD links. |
Use Scenario: Safeguarding RJ45 magnetics and Ethernet PHYs (e.g., DP83867) against ESD and lightning-induced common-mode surges in factory automation switches. IC Role / Device Role / Timing Role: Common-mode TVS pair across differential pairs (TD+, TD−, RD+, RD−), referenced to chassis ground. Use Value: Clamps 1500 W surges to <250 V while meeting IEC 61000-4-5 Level 4 - prevents PHY latch-up and MAC layer resets during field deployment. |
| Telecom DSL Line Card | Renewable Energy Inverter DC Link |
Use Scenario: Shielding ADSL/VDSL line drivers and SLICs from induced surges on outside plant copper lines exposed to lightning. IC Role / Device Role / Timing Role: Primary protection stage upstream of gas discharge tube (GDT) and secondary MOV network. Use Value: Fast sub-nanosecond response initiates clamping before GDT fires, limiting let-through voltage to <300 V - preserves SLIC front-end FETs. |
Use Scenario: Suppressing switching transients and grid fault surges on 600 V DC link buses in solar inverters and battery storage systems. IC Role / Device Role / Timing Role: Parallel-connected TVS across DC+ and DC− rails, coordinated with film capacitor bank for dV/dt control. Use Value: Absorbs 1500 W pulses without thermal runaway at +85 °C ambient - extends electrolytic capacitor lifetime by reducing ripple stress. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ180CA | Lower PPPM (600 W), same VWM/VBR range, SMB package (smaller footprint, higher RθJA = 110 °C/W) | Limited to lower-energy surges (IEC 61000-4-5 Level 2); unsuitable for automotive load-dump where 1500 W is mandated. | Select when board space is constrained and surge threat level is ≤600 W - verify thermal margin with PCB copper area. |
| 1.5KE180CA | Through-hole DO-15 package, identical electrical specs but no MSL-1 or halogen-free compliance; higher mounting height. | Not viable for automated SMT production; incompatible with reflow profiles requiring MSL-1 handling. | Choose only for legacy through-hole designs or prototyping where hand-soldering is acceptable and RoHS/halogen restrictions do not apply. |
Compared with SMBJ180CA and 1.5KE180CA, the 1.5SMC180CA-M3/9AT uniquely delivers 1500 W SMT-compatible surge protection with halogen-free construction and AEC-Q101 pathway - making it the only option qualified for volume automotive and industrial SMT production requiring UL 497B recognition.
Availability
1.5SMC180CA-M3/9AT is available at Aetrix Electronics and suitable for automotive sensor protection, industrial Ethernet interface hardening, and telecom DSL line card surge mitigation requiring stable component supply, consistent M3-grade material compliance, and 13" tape-and-reel delivery for high-volume SMT lines.
Supply support for 1.5SMC180CA-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 diodes, MOSFETs, optoelectronics, and passive components with emphasis on reliability, power efficiency, and AEC-Q qualification.
The 1.5SMC Series targets high-energy transient suppression in automotive, industrial, and telecom infrastructure - engineered for robustness under repetitive surge stress and compatibility with modern lead-free manufacturing.
FAQ
What is the clamping voltage of the 1.5SMC180CA-M3/9AT at its rated peak pulse current?
The 1.5SMC180CA-M3/9AT clamps to a maximum of 246 V when subjected to its rated peak pulse current of 6.1 A under the standard 10/1000 µs waveform. This value is measured per Figure 1 in Vishay Document 88303 and defines the upper voltage limit imposed on protected circuitry during worst-case surge events. The 1.5SMC180CA-M3/9AT maintains this clamping performance across its full operating temperature range of −65 °C to +150 °C.
Is the 1.5SMC180CA-M3/9AT suitable for automotive applications?
Yes - the 1.5SMC180CA-M3/9AT is halogen-free and RoHS-compliant (M3 suffix), and its base family is AEC-Q101 qualified when ordered with HM3 suffix (e.g., 1.5SMC180CAHM3_A/I). While the -M3/9AT variant itself is commercial-grade, it shares identical electrical and thermal characteristics with the qualified version and is widely used in non-safety-critical automotive subsystems such as body control modules and infotainment power supplies. The 1.5SMC180CA-M3/9AT meets UL 497B for telecom protector classification, supporting cross-industry validation.
What does the "CA" suffix indicate in 1.5SMC180CA-M3/9AT?
The "CA" suffix in 1.5SMC180CA-M3/9AT denotes a bidirectional configuration - meaning the device provides symmetrical transient suppression for both positive and negative voltage excursions. Unlike unidirectional "A" variants, the CA type has no polarity marking and exhibits identical breakdown (171–189 V), clamping (≤246 V), and leakage (<1.0 µA) characteristics in either direction. This makes the 1.5SMC180CA-M3/9AT ideal for AC-coupled lines, floating grounds, and differential signal paths where polarity cannot be guaranteed.
What is the thermal resistance of the 1.5SMC180CA-M3/9AT, and how does it affect layout?
The 1.5SMC180CA-M3/9AT has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per Vishay's recommended layout. Its junction-to-leads resistance is 15 °C/W, indicating efficient heat transfer to PCB traces. To maintain reliability under repetitive surges, designers must allocate ≥8 mm² of 2-oz copper per terminal and avoid narrow traces - insufficient copper increases junction temperature and reduces surge endurance. The 1.5SMC180CA-M3/9AT's thermal profile is validated for MSL Level 1 reflow up to 260 °C.
How does the 1.5SMC180CA-M3/9AT compare to unidirectional 1.5SMC180A-M3/9AT in circuit design?
The 1.5SMC180CA-M3/9AT differs fundamentally from the unidirectional 1.5SMC180A-M3/9AT in polarity handling: the CA version suppresses surges equally in both directions with no cathode band marking, while the A version requires correct orientation and conducts only in reverse bias. In practice, the 1.5SMC180CA-M3/9AT simplifies layout on bidirectional lines (e.g., RS-485, CAN, audio), eliminates risk of reverse installation, and avoids forward-voltage drop issues during negative transients - whereas the 1.5SMC180A-M3/9AT offers slightly lower leakage in DC-biased applications but demands strict polarity awareness.
1.5SMC180CA-M3/9AT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- 1.5SMC, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 154V
- Voltage - Breakdown (Min):
- 171V
- Voltage - Clamping (Max) @ Ipp:
- 246V
- Current - Peak Pulse (10/1000µs):
- 6.1A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
1.5SMC180CA-M3/9AT FAQ
1.How can I place an order for 1.5SMC180CA-M3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC180CA-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 1.5SMC180CA-M3/9AT reliable?
The price and inventory of 1.5SMC180CA-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 1.5SMC180CA-M3/9AT is usually 5 days.
3.What payment methods are accepted for 1.5SMC180CA-M3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC180CA-M3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC180CA-M3/9AT?
1.5SMC180CA-M3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC180CA-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 1.5SMC180CA-M3/9AT?
For technical support, including 1.5SMC180CA-M3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC180CA-M3/9AT requirements.
6.How does Aetrix verify that 1.5SMC180CA-M3/9AT is sourced from the original manufacturer or authorized distributors?
All 1.5SMC180CA-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 1.5SMC180CA-M3/9AT meets industry standards.
7.What is the process for return or replacement of 1.5SMC180CA-M3/9AT?
All 1.5SMC180CA-M3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC180CA-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 1.5SMC180CA-M3/9AT part is unused and in its original packaging.
Return procedure for 1.5SMC180CA-M3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC180CA-M3/9AT 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 …
