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Vishay General Semiconductor - Diodes Division SMCJ15CAHM3_A/H
- Part No.:
- SMCJ15CAHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ15CAHM3_A/H.pdf
- Description:
- TVS DIODE 15VWM 24.4VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,257
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Product details
Overview
SMCJ15CAHM3_A/H from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for robust overvoltage protection of sensitive electronics. It features a 15 V standoff voltage (VWM), 24.4 V clamping voltage (VC) at 61.5 A peak pulse current (IPPM), and 1500 W peak pulse power (PPPM) with 10/1000 µs waveform - deployed on power rails and signal lines in automotive ECUs and industrial sensor interfaces.
For engineers reviewing the SMCJ15CAHM3_A/H datasheet, SMCJ15CAHM3_A/H pinout, SMCJ15CAHM3_A/H application, or SMCJ15CAHM3_A/H equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, halogen-free RoHS compliance, and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
This device operates as a silicon avalanche diode with symmetrical breakdown in both directions, enabling protection against polarity-agnostic transients such as ESD, load dump, and inductive switching spikes. Its glass-passivated junction ensures stable leakage (<1.0 µA at VWM) and low incremental surge resistance, critical for maintaining low clamping voltage under high-current surges.
The SMCJ15CAHM3_A/H is rated for TJ = −55 °C to +150 °C and meets MSL level 1 per J-STD-020 with 260 °C lead-free reflow peak. Its thermal resistance (RθJA = 75 °C/W) and junction-to-lead (RθJL = 15 °C/W) support reliable operation in thermally constrained PCB layouts without heatsinking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 15 V - maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 16.7 V / 18.5 V - guaranteed breakdown range at 1.0 mA test current, defining turn-on threshold |
| VC @ IPPM | 24.4 V - clamped voltage during 61.5 A 10/1000 µs surge, limiting stress on downstream ICs |
| PPPM | 1500 W - peak transient power handling capacity, enabling protection against severe ISO 7637-2 pulses |
| ID @ VWM | ≤1.0 µA - ultra-low leakage ensures minimal standby power loss and signal integrity |
| TJ max | +150 °C - extended junction temperature rating supports under-hood automotive use |
| Package | SMC (DO-214AB) - surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.62 mm height |
Pinout & Package
SMCJ15CAHM3_A/H uses the standard SMC (DO-214AB) package: two-terminal, bidirectional device with no polarity marking. Terminals are matte tin-plated leads, solderable per J-STD-002 and JESD 22-B102, and meet JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient return path (bidirectional) | Acts as cathode during positive transients and anode during negative transients - symmetric conduction |
| Cathode | Transient return path (bidirectional) | Identical role to Anode; no functional distinction in CA-type devices - terminals interchangeable |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan |
| Halogen-free & RoHS-compliant | Meets JEDEC JS709E and IPC-1752A requirements - suitable for green manufacturing and end-of-life compliance |
| Low-profile SMC package | Height ≤2.62 mm enables use in space-constrained modules like ADAS camera housings and motor control boards |
| Very fast response time | Sub-nanosecond clamping onset ensures protection before sensitive CMOS inputs experience overstress |
| MSL Level 1 | Unlimited floor life at ≤30 °C/60% RH - eliminates baking requirement prior to reflow assembly |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed microcontroller power inputs in engine control units against load dump transients up to ±35 V. IC Role / Device Role / Timing Role: Bidirectional clamping TVS placed between VCC and GND, absorbing energy before LDO or MCU input stage. Use Value: Clamps to 24.4 V at 61.5 A, preventing latch-up or gate oxide damage in 3.3 V/5 V logic powered from unregulated supply rails. | Use Scenario: Shielding analog output lines (e.g., 4–20 mA current loop) of pressure sensors from ESD events during field wiring. IC Role / Device Role / Timing Role: Parallel-connected TVS across signal and return paths, shunting >8 kV HBM ESD pulses away from precision op-amp inputs. Use Value: Sub-µA leakage preserves loop accuracy; 1500 W PPPM handles multiple contact discharges without degradation. |
| Telecom Line Surge Protection | Consumer USB Port ESD Suppression |
Use Scenario: Safeguarding Ethernet PHY interface power pins (e.g., MDI-X bias rails) against lightning-induced surges in outdoor base stations. IC Role / Device Role / Timing Role: Primary-level TVS on DC bias feed, coordinated with secondary GDT or polymer PTC for staged protection. Use Value: 1500 W rating sustains multi-pulse surge events; bidirectional symmetry avoids polarity-dependent failure modes. | Use Scenario: Adding robustness to USB 2.0 VBUS line in portable speakers against accidental 12 V adapter misconnection or hot-plug ESD. IC Role / Device Role / Timing Role: Standalone overvoltage clamp between VBUS and GND, upstream of USB switch or charging IC. Use Value: 24.4 V clamping prevents damage to 5 V tolerant USB transceivers; halogen-free construction aligns with IEC 61249-2-21. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ15CAHE3_A/H | Lower PPPM (400 W), smaller SMA package (DO-214AC), higher RθJA (125 °C/W) | Suitable only for lower-energy transients (e.g., IEC 61000-4-2 ESD), not load dump | Select when board space is critical and surge threat level is limited to human-body-model events. |
| SMCJ15CAHE3_A/H | Same electrical specs and SMC package, but RoHS-compliant without halogen-free certification | Acceptable for commercial/industrial use where halogen-free mandate does not apply | Choose for cost-sensitive designs where AEC-Q101 and halogen-free are not required. |
Compared with SMAJ15CAHE3_A/H and SMCJ15CAHE3_A/H, the SMCJ15CAHM3_A/H uniquely combines 1500 W surge capacity, AEC-Q101 qualification, and halogen-free compliance - making it the only option qualified for high-reliability automotive power rail protection with full environmental compliance.
Availability
SMCJ15CAHM3_A/H is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor module production, and telecom infrastructure development requiring stable component supply and long-term lifecycle assurance.
Supply support for SMCJ15CAHM3_A/H 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 reliability, efficiency, and application-specific performance.
The SMCJ series targets high-energy transient suppression in harsh environments - engineered for automotive, industrial, and telecom systems where failure due to voltage surges must be eliminated.
FAQ
What is the clamping voltage of SMCJ15CAHM3_A/H at its rated peak pulse current?
The SMCJ15CAHM3_A/H has a maximum clamping voltage (VC) of 24.4 V when subjected to its rated peak pulse current (IPPM) of 61.5 A using the standard 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and guarantees predictable voltage limiting during surge events, ensuring downstream components like microcontrollers or communication ICs remain within safe operating limits. The SMCJ15CAHM3_A/H maintains this clamping performance across its full operating temperature range.
Is SMCJ15CAHM3_A/H qualified for automotive applications?
Yes, the SMCJ15CAHM3_A/H is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HM3" and documentation in the SMCJ5.0A–SMCJ188CA datasheet (Document Number 88394). This qualification covers stress tests including HTGB, H3TRB, and temperature cycling - validating its suitability for under-hood and chassis-mounted automotive electronics. The SMCJ15CAHM3_A/H is explicitly designated for automotive use in Vishay's material categorization and packaging data.
How does the halogen-free status of SMCJ15CAHM3_A/H impact its compliance profile?
The "M3" suffix in SMCJ15CAHM3_A/H indicates halogen-free, RoHS-compliant construction per JEDEC JS709E and IPC-1752A standards - meaning bromine, chlorine, and other halogens are below regulated thresholds. This enables compliance with strict environmental regulations in EU, China, and South Korea, and supports safer end-of-life recycling. Unlike non-M3 variants, the SMCJ15CAHM3_A/H meets both RoHS and halogen-free mandates simultaneously without trade-offs in electrical performance or reliability.
What is the thermal resistance of SMCJ15CAHM3_A/H, and how does it affect PCB layout?
The SMCJ15CAHM3_A/H has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on the recommended 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal. This value assumes no additional heatsinking and defines the maximum power dissipation before exceeding TJ max of +150 °C. To maintain reliability during repetitive surge events, designers must allocate adequate copper area and avoid thermal bottlenecks - the SMCJ15CAHM3_A/H's RθJL of 15 °C/W further emphasizes the need for low-impedance thermal paths to internal ground planes.
Can SMCJ15CAHM3_A/H replace unidirectional TVS diodes in existing designs?
No - the SMCJ15CAHM3_A/H is strictly bidirectional and lacks polarity marking, so it cannot directly replace unidirectional TVS diodes (e.g., SMCJ15A) without circuit review. Unidirectional types conduct forward current and block reverse voltage, while the SMCJ15CAHM3_A/H clamps symmetrically in both directions. Substituting it into a unidirectional application may cause unintended conduction during normal reverse-biased operation. Always verify system-level polarity behavior before using SMCJ15CAHM3_A/H as a replacement.
SMCJ15CAHM3_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):
- 15V
- Voltage - Breakdown (Min):
- 16.7V
- Voltage - Clamping (Max) @ Ipp:
- 24.4V
- Current - Peak Pulse (10/1000µs):
- 61.5A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
SMCJ15CAHM3_A/H FAQ
1.How can I place an order for SMCJ15CAHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ15CAHM3_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 SMCJ15CAHM3_A/H reliable?
The price and inventory of SMCJ15CAHM3_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 SMCJ15CAHM3_A/H is usually 5 days.
3.What payment methods are accepted for SMCJ15CAHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ15CAHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ15CAHM3_A/H?
SMCJ15CAHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ15CAHM3_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 SMCJ15CAHM3_A/H?
For technical support, including SMCJ15CAHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ15CAHM3_A/H requirements.
6.How does Aetrix verify that SMCJ15CAHM3_A/H is sourced from the original manufacturer or authorized distributors?
All SMCJ15CAHM3_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 SMCJ15CAHM3_A/H meets industry standards.
7.What is the process for return or replacement of SMCJ15CAHM3_A/H?
All SMCJ15CAHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ15CAHM3_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 SMCJ15CAHM3_A/H part is unused and in its original packaging.
Return procedure for SMCJ15CAHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ15CAHM3_A/H Tags
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