My Inquiry
My Account
Vishay General Semiconductor - Diodes Division 1.5SMC11CAHM3/I
- Part No.:
- 1.5SMC11CAHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC11CAHM3/I.pdf
- Description:
- TVS DIODE 9.4VWM 15.6VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,351
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1.5SMC11CAHM3/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 11 V breakdown voltage (VBR min/max = 10.5–11.6 V), 9.4 V stand-off voltage (VWM), 15.6 V clamping voltage (VC) at 96.2 A peak pulse current, and 1500 W peak pulse power rating with 10/1000 µs waveform - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the 1.5SMC11CAHM3/I datasheet, 1.5SMC11CAHM3/I pinout, 1.5SMC11CAHM3/I application, or 1.5SMC11CAHM3/I equivalent, this page delivers verified electrical specs, SMC (DO-214AB) package details, bidirectional clamping behavior, AEC-Q101 qualification status, and direct alternative part comparisons for ESD/surge protection design-in.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, delivering identical clamping performance regardless of transient polarity - critical for protecting AC-coupled or floating signal paths. Its glass-passivated junction ensures stable leakage (<5 µA at VWM) and fast response time (<1 ns), while low incremental surge resistance enables precise voltage limiting during high-di/dt events.
The device is rated for 150 °C maximum junction temperature and meets J-STD-020 MSL Level 1 (260 °C peak reflow), supporting automated SMT assembly without derating. Its halogen-free, RoHS-compliant HM3 suffix confirms compliance with automotive-grade material requirements and whisker resistance per JESD201 Class 2.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 10.5 V / 11.6 V - guaranteed breakdown threshold ensures reliable triggering before downstream IC damage |
| VWM | 9.4 V - maximum continuous reverse operating voltage; defines safe DC bias margin before leakage rise |
| VC @ IPPM | 15.6 V at 96.2 A - clamped voltage under 1500 W 10/1000 µs surge; determines protected circuit's max stress level |
| PPPM | 1500 W - peak pulse power handling capacity; supports lightning-induced transients per IEC 61000-4-5 |
| IPPM | 96.2 A - peak pulse current capability; defines minimum series impedance needed for effective energy diversion |
| TJ max | 150 °C - maximum junction temperature; enables operation in under-hood automotive environments |
| Package | SMC (DO-214AB) - standardized 7.11 mm × 6.22 mm surface-mount outline with thermal pad compatibility |
Pinout & Package
1.5SMC11CAHM3/I uses the SMC (DO-214AB) package: a symmetrical, bidirectional surface-mount case with no polarity marking. The two terminals are functionally identical - either can serve as anode or cathode depending on transient polarity. Thermal performance assumes mounting on 8.0 mm × 8.0 mm copper pads per terminal.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode/Cathode (bidirectional) | Reversible terminal; conducts during negative or positive transients - no fixed polarity assignment |
| Terminal 2 | Anode/Cathode (bidirectional) | Reversible terminal; completes symmetrical clamping path - identical electrical role to Terminal 1 |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals, differential buses, or floating nodes without polarity concerns |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive applications including engine control modules, ADAS sensors, and body electronics |
| 1500 W peak pulse power (10/1000 µs) | Meets IEC 61000-4-5 Level 4 surge immunity requirements for industrial and automotive end equipment |
| Halogen-free & RoHS-compliant | Complies with automotive material restrictions (e.g., VW 80101) and global environmental directives |
| MSL Level 1 (260 °C peak) | Supports standard lead-free reflow profiles without moisture sensitivity limitations or baking requirements |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
|
Use Scenario: Protecting CAN FD and LIN bus transceivers from load dump and ISO 7637-2 pulses in vehicle ECUs. IC Role / Device Role: Bidirectional voltage clamp placed across differential signal pair or supply rail. Use Value: Limits transient excursions to ≤15.6 V, preventing latch-up or gate oxide damage in 3.3 V/5 V transceivers. |
Use Scenario: Safeguarding 24 V digital input modules against field-wiring surges and inductive kickback. IC Role / Device Role: Primary surge suppression element at connector entry point before optocoupler or MCU input. Use Value: Absorbs 1500 W surges without degradation, maintaining <5 µA leakage at 24 V nominal system voltage. |
| Consumer Power Adapter Input | Telecom Line Interface |
|
Use Scenario: Secondary-side overvoltage clamp on 12 V DC output rails of wall adapters exposed to mains transients. IC Role / Device Role: Fast-acting shunt protector parallel to load, triggered within <1 ns of overvoltage onset. Use Value: Clamps 100 V transients down to 15.6 V, preserving downstream DC-DC converters and USB-PD controllers. |
Use Scenario: Protection of Ethernet PHY interface pins (e.g., RJ45 magnetics secondary side) against ESD and lightning-induced surges. IC Role / Device Role: Low-capacitance bidirectional TVS placed across differential pairs (e.g., TX+/TX−). Use Value: Delivers 15.6 V clamping with <10 pF junction capacitance (typ.) - avoids signal integrity degradation at 100 Mbps. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ11CA | Lower peak power (600 W), same VBR/VC, SMB package (smaller footprint, higher RθJA) | Best suited for space-constrained consumer PCBs where surge severity is limited to IEC 61000-4-2 ESD only | Select when board area is critical and full 1500 W IEC 61000-4-5 immunity is not required |
| 1.5KE11CA | Through-hole TO-204AA (DO-41), identical VBR/VC, 1500 W rating, higher thermal mass but no SMT compatibility | Used in legacy industrial power supplies or prototyping where manual assembly or heat sinking dominates | Choose for high-reliability through-hole designs needing identical clamping but no reflow compatibility |
Compared with SMBJ11CA and 1.5KE11CA, the 1.5SMC11CAHM3/I uniquely combines AEC-Q101 qualification, halogen-free construction, SMC package thermal performance, and full 1500 W surge capability - making it the preferred choice for production automotive and industrial SMT designs requiring long-term reliability and regulatory compliance.
Availability
1.5SMC11CAHM3/I is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, and telecom line interface circuits requiring stable component supply, AEC-Q101 validation, and consistent 1500 W surge handling.
Supply support for 1.5SMC11CAHM3/I 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 and application-specific performance.
The 1.5SMC Series was engineered for high-power, surface-mount transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where compact size, AEC-Q101 compliance, and repeatable clamping are mandatory.
FAQ
What does the "CA" suffix mean in 1.5SMC11CAHM3/I?
The "CA" suffix in 1.5SMC11CAHM3/I denotes a bidirectional configuration - meaning the device provides symmetrical transient voltage clamping in both polarities. Unlike unidirectional variants (e.g., 1.5SMC11AHM3/I), it has no cathode band marking and functions identically whether voltage is applied in positive or negative direction. This makes the 1.5SMC11CAHM3/I ideal for protecting AC-coupled lines, differential buses, or floating references where polarity reversal is possible.
Is 1.5SMC11CAHM3/I qualified for automotive use?
Yes, the 1.5SMC11CAHM3/I is AEC-Q101 qualified, as confirmed by its "HM3" suffix - indicating halogen-free, RoHS-compliant construction and full stress testing per the AEC-Q101 standard for discrete semiconductors. It is approved for use in automotive applications including engine control units, ADAS camera modules, and body electronics where reliability under thermal cycling, humidity, and mechanical shock is critical. The 1.5SMC11CAHM3/I maintains specified VBR, VC, and leakage performance across -65 °C to +150 °C.
What is the clamping voltage of 1.5SMC11CAHM3/I at its rated peak pulse current?
The clamping voltage (VC) of the 1.5SMC11CAHM3/I is 15.6 V measured at its peak pulse current (IPPM) of 96.2 A, using the standard 10/1000 µs double-exponential waveform. This value represents the maximum voltage that will appear across the protected circuit during a full-rated 1500 W transient event. Designers use this parameter to verify that downstream components - such as 3.3 V or 5 V logic ICs - remain within their absolute maximum ratings during surge conditions.
How does the SMC package of 1.5SMC11CAHM3/I compare thermally to SMA or SMB packages?
The SMC (DO-214AB) package used by the 1.5SMC11CAHM3/I offers superior thermal performance versus smaller SMD packages: its typical junction-to-ambient thermal resistance (RθJA) is 75 °C/W when mounted on 8.0 mm × 8.0 mm copper pads - significantly lower than SMA (RθJA ≈ 100–120 °C/W) or SMB (RθJA ≈ 90–110 °C/W). This allows the 1.5SMC11CAHM3/I to sustain repeated 1500 W surges with less junction temperature rise, improving long-term reliability in high-duty-cycle industrial applications.
Can 1.5SMC11CAHM3/I replace a unidirectional TVS like 1.5SMC11AHM3/I in an existing design?
No - the 1.5SMC11CAHM3/I is bidirectional and cannot directly replace a unidirectional part like 1.5SMC11AHM3/I without circuit review. Unidirectional TVS diodes conduct forward current during positive transients and block reverse voltage; bidirectional devices conduct in both directions. Substituting the 1.5SMC11CAHM3/I into a unidirectional layout may cause unintended conduction during normal DC bias, increased leakage, or failure to clamp correctly. Always verify polarity requirements and schematic placement before interchanging 1.5SMC11CAHM3/I with unidirectional variants.
1.5SMC11CAHM3/I 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:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 9.4V
- Voltage - Breakdown (Min):
- 10.5V
- Voltage - Clamping (Max) @ Ipp:
- 15.6V
- Current - Peak Pulse (10/1000µs):
- 96.2A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
1.5SMC11CAHM3/I FAQ
1.How can I place an order for 1.5SMC11CAHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC11CAHM3/I 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 1.5SMC11CAHM3/I reliable?
The price and inventory of 1.5SMC11CAHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC11CAHM3/I is usually 5 days.
3.What payment methods are accepted for 1.5SMC11CAHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC11CAHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC11CAHM3/I?
1.5SMC11CAHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC11CAHM3/I 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 1.5SMC11CAHM3/I?
For technical support, including 1.5SMC11CAHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC11CAHM3/I requirements.
6.How does Aetrix verify that 1.5SMC11CAHM3/I is sourced from the original manufacturer or authorized distributors?
All 1.5SMC11CAHM3/I 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 1.5SMC11CAHM3/I meets industry standards.
7.What is the process for return or replacement of 1.5SMC11CAHM3/I?
All 1.5SMC11CAHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC11CAHM3/I, 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 1.5SMC11CAHM3/I part is unused and in its original packaging.
Return procedure for 1.5SMC11CAHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC11CAHM3/I 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
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 …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
