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Vishay General Semiconductor - Diodes Division 1.5SMC12CAHM3/I
- Part No.:
- 1.5SMC12CAHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC12CAHM3/I.pdf
- Description:
- TVS DIODE 10.2VWM 16.7VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,141
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Product details
Overview
1.5SMC12CAHM3/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge protection. It features 12 V breakdown voltage (VBR min/max = 11.4–12.6 V at 1.0 mA), 10.2 V stand-off voltage (VWM), and clamps transients to ≤16.7 V at 89.8 A peak pulse current (10/1000 µs), delivering 1500 W peak pulse power for automotive and industrial signal-line protection.
For engineers reviewing the 1.5SMC12CAHM3/I datasheet, 1.5SMC12CAHM3/I pinout, 1.5SMC12CAHM3/I application, or 1.5SMC12CAHM3/I equivalent, this device serves as a halogen-free, AEC-Q101-qualified TVS for bidirectional transient suppression on power rails and data lines where low clamping voltage, fast response (<1 ns), and MSL Level 1 reflow compatibility are critical selection criteria.
Technical Context
The 1.5SMC12CAHM3/I operates as a bidirectional avalanche diode with symmetrical clamping behavior in both polarities, enabling robust protection of AC-coupled or differential interfaces without polarity concerns. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<5.0 µA at VWM), while thermal resistance (RθJA = 75 °C/W) supports operation up to 150 °C junction temperature under defined PCB pad layout (8.0 mm × 8.0 mm copper).
It delivers 1500 W peak pulse power per 10/1000 µs waveform at 0.01 % duty cycle, with low incremental surge resistance enhancing energy absorption efficiency. The device meets JESD201 Class 2 whisker resistance and is qualified to AEC-Q101 for automotive underhood and infotainment applications requiring long-term reliability under thermal cycling and humidity stress.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 11.4 V / 12.6 V at 1.0 mA - defines precise avalanche onset threshold for reliable triggering before downstream IC damage |
| VWM | 10.2 V - maximum continuous reverse operating voltage; ensures zero conduction during normal signal swing |
| VC @ IPPM | ≤16.7 V at 89.8 A - clamping voltage limits protected circuit stress during worst-case lightning or ESD surge |
| PPPM | 1500 W - peak pulse power rating determines survivability against 10/1000 µs transients per IEC 61000-4-5 |
| IPPM | 89.8 A - peak pulse current capacity directly correlates with surge energy handling (E ≈ VC × IPPM × tp) |
| TJ max | +150 °C - enables use in under-hood automotive environments and industrial enclosures without derating |
| MSL Level | Level 1 (J-STD-020) - supports standard lead-free reflow profiles up to 260 °C peak without moisture-induced failure |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, bidirectional - no polarity marking; symmetrical terminals enable orientation-agnostic placement on PCB.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative polarity) | One terminal of symmetrical avalanche junction; conducts during negative transients to clamp voltage |
| Cathode | Transient current entry (positive polarity) | Other terminal of symmetrical junction; conducts during positive transients to clamp voltage |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals, differential buses (e.g., RS-485), and ungrounded power rails without polarity constraints |
| AEC-Q101 qualification | Validated for automotive applications including engine control units, body electronics, and ADAS sensor interfaces per stress test requirements |
| Halogen-free & RoHS-compliant (HM3 suffix) | Meets EU Directive 2011/65/EU and IPC-1752A material declarations; supports green manufacturing and end-of-life compliance |
| 1500 W peak pulse power | Withstands IEC 61000-4-5 Level 4 surges (4 kV line-to-earth) when properly mounted on 8 mm × 8 mm copper pads |
| Low clamping ratio (VC/VBR ≈ 1.4) | Minimizes overvoltage stress on protected ICs compared to higher-ratio suppressors, preserving signal integrity margins |
Applications
| Automotive Sensor Protection | Industrial RS-485 Interface |
|---|---|
|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load-dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional TVS placed across differential pair or supply rail to shunt surge energy before it reaches sensitive input stages. Use Value: Clamps transients to ≤16.7 V while maintaining <5 µA leakage at 10.2 V, ensuring no impact on sensor accuracy or bus timing during normal operation. |
Use Scenario: Safeguarding RS-485 transceivers in factory automation PLCs against induced surges from motor drives and relay switching. IC Role / Device Role / Timing Role: Placed between A/B lines and ground to suppress common-mode and differential-mode transients without distorting signal edges. Use Value: Fast <1 ns response and low capacitance (<100 pF) prevent data corruption at 10 Mbps rates while surviving repeated 1500 W surges. |
| Consumer USB Power Delivery | Telecom DSL Line Protection |
|
Use Scenario: Securing USB-C power delivery paths (VBUS/CC lines) against ESD and hot-plug transients in portable chargers and docking stations. IC Role / Device Role / Timing Role: Bidirectional clamp on VBUS to absorb ±15 kV contact ESD (IEC 61000-4-2) and 10/1000 µs surges from adapter faults. Use Value: Halogen-free HM3 construction complies with consumer safety standards; 10.2 V VWM allows full 5–20 V PD range operation without leakage-induced power loss. |
Use Scenario: Front-end protection of DSL line drivers and receivers exposed to lightning-induced surges on outside plant wiring. IC Role / Device Role / Timing Role: Mounted across tip/ring pairs to limit surge voltage to safe levels for transformer-coupled analog front-ends. Use Value: 1500 W rating handles telecom-grade surges (GR-1089); symmetrical clamping avoids DC bias shift that could saturate line transformers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ12CA | Same VBR (11.4–12.6 V) and VC (≤19.9 V), but lower PPPM = 600 W and smaller SMB package (DO-214AA) | Limited to lower-energy surges (IEC 61000-4-5 Level 2); unsuitable for automotive load-dump or telecom lightning events | Select when board space is constrained and surge threat level is moderate (e.g., internal PCB interconnects) |
| 1.5KE12CA | Same electrical specs but axial-leaded DO-15 package; no surface-mount capability; higher RθJA (~100 °C/W) | Requires through-hole assembly; incompatible with automated SMT lines; not AEC-Q101 qualified | Choose only for legacy through-hole designs or prototyping where reflow compatibility is not required |
Compared with SMBJ12CA and 1.5KE12CA, the 1.5SMC12CAHM3/I provides superior surge robustness (1500 W vs. 600 W or axial-limited energy), AEC-Q101 qualification for automotive use, and SMC package compatibility with high-volume SMT production-making it the preferred choice for mission-critical bidirectional protection where reliability and manufacturability are jointly prioritized.
Availability
1.5SMC12CAHM3/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial RS-485 networks, and consumer USB-C power delivery systems requiring stable component supply, halogen-free compliance, and AEC-Q101 validation.
Supply support for 1.5SMC12CAHM3/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, rectifiers, MOSFETs, and protection devices with emphasis on high-reliability, automotive-grade, and industry-standard solutions.
The 1.5SMC Series was engineered specifically for surface-mount transient suppression in harsh environments-delivering high-power surge handling, AEC-Q101 qualification, and consistent clamping performance across automotive, industrial, and telecom applications.
FAQ
What is the clamping voltage of the 1.5SMC12CAHM3/I at its rated peak pulse current?
The 1.5SMC12CAHM3/I clamps to a maximum of 16.7 V at its rated peak pulse current of 89.8 A (10/1000 µs waveform). This value is measured under standardized test conditions with the device mounted on 8.0 mm × 8.0 mm copper pads per JEDEC guidelines, ensuring repeatable surge suppression performance in production designs.
Is the 1.5SMC12CAHM3/I suitable for automotive applications?
Yes, the 1.5SMC12CAHM3/I is AEC-Q101 qualified and carries the HM3 suffix indicating halogen-free, RoHS-compliant, and automotive-grade construction. It is explicitly rated for under-hood and infotainment applications where operation from −65 °C to +150 °C and resistance to thermal cycling, humidity, and mechanical shock are required.
Does the 1.5SMC12CAHM3/I have polarity markings on the package?
No, the 1.5SMC12CAHM3/I is a bidirectional TVS diode and carries no polarity marking on the SMC (DO-214AB) package. Its symmetrical construction means either terminal may serve as anode or cathode depending on transient polarity-enabling flexible PCB layout without orientation constraints.
What is the maximum steady-state power dissipation of the 1.5SMC12CAHM3/I?
The 1.5SMC12CAHM3/I has a maximum steady-state power dissipation (PD) of 6.5 W when mounted on an infinite heatsink at ambient temperature of 50 °C. At 25 °C ambient, derating applies per Figure 2 in the datasheet, and practical PCB layout (e.g., 8 mm × 8 mm pads) yields ~3.5 W usable continuous power.
How does the 1.5SMC12CAHM3/I differ from unidirectional variants like 1.5SMC12AHM3/I?
The 1.5SMC12CAHM3/I is bidirectional with symmetrical clamping in both polarities and no cathode band marking, whereas 1.5SMC12AHM3/I is unidirectional, features a cathode band, and conducts only during positive transients. The "CA" suffix denotes bidirectional functionality, making 1.5SMC12CAHM3/I appropriate for AC-coupled or floating signal lines where polarity reversal occurs.
1.5SMC12CAHM3/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):
- 10.2V
- Voltage - Breakdown (Min):
- 11.4V
- Voltage - Clamping (Max) @ Ipp:
- 16.7V
- Current - Peak Pulse (10/1000µs):
- 89.8A
- 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)
1.5SMC12CAHM3/I FAQ
1.How can I place an order for 1.5SMC12CAHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC12CAHM3/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 1.5SMC12CAHM3/I reliable?
The price and inventory of 1.5SMC12CAHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC12CAHM3/I is usually 5 days.
3.What payment methods are accepted for 1.5SMC12CAHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC12CAHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC12CAHM3/I?
1.5SMC12CAHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC12CAHM3/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 1.5SMC12CAHM3/I?
For technical support, including 1.5SMC12CAHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC12CAHM3/I requirements.
6.How does Aetrix verify that 1.5SMC12CAHM3/I is sourced from the original manufacturer or authorized distributors?
All 1.5SMC12CAHM3/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 1.5SMC12CAHM3/I meets industry standards.
7.What is the process for return or replacement of 1.5SMC12CAHM3/I?
All 1.5SMC12CAHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC12CAHM3/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 1.5SMC12CAHM3/I part is unused and in its original packaging.
Return procedure for 1.5SMC12CAHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC12CAHM3/I Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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ESD5Z3.3T1G
onsemi
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D5V0H1B2LP-7B
Diodes Incorporated
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D5V0P1B2LP-7B
Diodes Incorporated
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DESD5V0U1BA-7
Diodes Incorporated
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ESD5Z5.0T1G
onsemi
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DESD5V0U1BB-7
Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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PESD2V0Y1BSFYL
Nexperia USA Inc.
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DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
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D5V0L1B2WS-7
Diodes Incorporated
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