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Vishay General Semiconductor - Diodes Division SMA5J7.0CAHM3_A/H
- Part No.:
- SMA5J7.0CAHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J7.0CAHM3_A/H.pdf
- Description:
- TVS DIODE 7VWM 12VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,981
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Product details
Overview
SMA5J7.0CAHM3_A/H from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients on signal or power lines. It features a 7.0 V stand-off voltage (VWM), 12.0 V maximum clamping voltage (VC) at 41.7 A peak pulse current (IPPM), and 500 W peak pulse power (10/1000 µs waveform), suitable for automotive sensor line protection per AEC-Q101 qualification.
For engineers reviewing the SMA5J7.0CAHM3_A/H datasheet, SMA5J7.0CAHM3_A/H pinout, SMA5J7.0CAHM3_A/H application, or SMA5J7.0CAHM3_A/H equivalent, key selection criteria include bidirectional polarity, 7.0 V VWM, 12.0 V VC, AEC-Q101 qualification, and SMA package compatibility with automated SMT placement.
Technical Context
This device operates as a voltage-clamped surge protector using an avalanche breakdown mechanism. Its bidirectional structure enables symmetrical clamping in both polarities without external circuitry, and its glass-passivated junction ensures stable breakdown characteristics over temperature and lifetime.
The SMA5J7.0CAHM3_A/H delivers 500 W peak pulse power handling with low incremental surge resistance and fast response time (<1 ns), enabling effective suppression of ESD, lightning-induced surges, and inductive switching transients in automotive and industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.0 V - Maximum continuous reverse operating voltage before clamping begins; defines safe operating margin for 5 V–7 V signal/power rails. |
| VBR min/max | 7.78 V / 8.60 V - Verified breakdown voltage range at 10 mA test current; ensures consistent turn-on across production lots. |
| VC @ IPPM | 12.0 V - Clamping voltage at 41.7 A peak pulse current; limits downstream IC stress during 500 W transient events. |
| IPPM | 41.7 A - Peak pulse current capability under 10/1000 µs waveform; supports robust protection against ISO 7637-2 Pulse 1/2/5a. |
| PPPM | 500 W - Peak pulse power rating; enables single-device protection for moderate-energy transients without derating. |
| TJ max | +150 °C - Maximum junction temperature; allows operation in under-hood automotive environments with thermal margin. |
| Qualification | AEC-Q101 qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, halogen-free, RoHS-compliant, MSL Level 1 (260 °C reflow peak), matte tin-plated leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (bidirectional) | Surge current path terminal | No polarity marking; symmetrical terminals enable identical clamping behavior in either direction-no orientation dependency during placement. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines (e.g., CAN, LIN, sensor bridges) without polarity concerns. |
| Glass-passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity exposure. |
| AEC-Q101 qualification (HM3 suffix) | Validates suitability for automotive applications including engine control, body electronics, and ADAS sensor interfaces. |
| Low Rsurge (incremental) | Minimizes VC overshoot during high-di/dt transients, improving protection margin for sensitive 3.3 V or 5 V logic. |
| MSL Level 1 rating | Supports standard SMT reflow without baking or special handling-reduces manufacturing complexity and cost. |
Applications
| Automotive Sensor Protection | CAN Bus Transient Suppression |
|---|---|
Use Scenario: Protecting analog output sensors (e.g., pressure, temperature) in engine compartments exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Voltage-clamping TVS placed between sensor signal line and ground to shunt surge energy before reaching ADC input. Use Value: Limits transient voltage to ≤12.0 V, preserving integrity of 5 V rail-connected signal conditioning ICs and meeting OEM EMC requirements. |
Use Scenario: Safeguarding CANH/CANL differential pair in vehicle infotainment or gateway ECUs against ESD and coupled transients. IC Role / Device Role / Timing Role: Bidirectional clamping device installed across CAN bus lines to clamp common-mode surges without disrupting differential signaling. Use Value: Maintains signal integrity by clamping ±12.0 V while adding <1 pF junction capacitance-no data rate degradation at 1 Mbps or 5 Mbps. |
| Industrial PLC I/O Protection | Consumer Power Adapter Input Stage |
Use Scenario: Shielding digital input modules in programmable logic controllers from field-wiring induced surges (e.g., relay coil flyback). IC Role / Device Role / Timing Role: Primary surge arrestor on 24 V DC input lines, positioned upstream of optocoupler or Schmitt trigger interface. Use Value: Withstands repeated 500 W transients and maintains VWM = 7.0 V margin above nominal 5 V logic supply, preventing false triggering. |
Use Scenario: Secondary-side transient suppression on 5 V USB power delivery lines in wall adapters and charging bricks. IC Role / Device Role / Timing Role: Bidirectional TVS placed between VBUS and GND to absorb ESD events from user port contact and cable coupling. Use Value: Halogen-free HM3 construction meets IEC 62368-1 flammability and environmental compliance; 12.0 V clamping protects USB-PD controller ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J7.0CAHE3_A/H | Same electrical specs, but RoHS-compliant commercial grade (non-AEC-Q101); E3 suffix denotes standard tin plating without halogen-free requirement. | Lacks AEC-Q101 validation; not approved for automotive under-hood use; suitable for industrial/commercial PCBs with lower reliability demands. | Select when automotive qualification is unnecessary and cost sensitivity outweighs halogen-free compliance. |
| SMA6J7.0CAHM3_A/H | Higher 600 W PPPM rating, same VWM/VC, larger SMA package footprint (DO-214AC variant with enhanced thermal pad area). | Offers greater surge margin for high-risk environments (e.g., alternator load dump), but requires PCB layout revision due to different thermal pad dimensions. | Select when system-level surge testing exceeds 500 W requirements and board space permits larger footprint. |
Compared with SMA5J7.0CAHE3_A/H, the SMA5J7.0CAHM3_A/H adds halogen-free construction and AEC-Q101 qualification without sacrificing clamping performance; versus SMA6J7.0CAHM3_A/H, it trades 100 W pulse power headroom for tighter board space and lower BOM cost in validated automotive applications.
Availability
SMA5J7.0CAHM3_A/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, CAN bus nodes, industrial PLC I/O modules, and consumer USB power delivery systems requiring stable component supply with full traceability and lifecycle support.
Supply support for SMA5J7.0CAHM3_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, power density, and automotive-grade qualification.
The SMA5J series is engineered for high-power-density transient suppression in space-constrained automotive and industrial applications, delivering 500 W surge capability in the compact SMA (DO-214AC) package with AEC-Q101 validation.
FAQ
What does the "HM3" suffix indicate in SMA5J7.0CAHM3_A/H?
The "HM3" suffix in SMA5J7.0CAHM3_A/H denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. It confirms compliance with automotive reliability standards-including temperature cycling, high-temperature reverse bias (HTRB), and ESD testing-as well as material restrictions per JEDEC J-STD-20 and JESD201 Class 2 whisker resistance.
Is SMA5J7.0CAHM3_A/H unidirectional or bidirectional?
SMA5J7.0CAHM3_A/H is a bidirectional transient voltage suppressor, as indicated by the "CA" in its part number. It provides symmetrical clamping in both polarities with identical VBR, VC, and IPPM specifications-no cathode band marking is present, and orientation during PCB placement has no functional impact.
What is the maximum clamping voltage of SMA5J7.0CAHM3_A/H and under what conditions is it specified?
The maximum clamping voltage of SMA5J7.0CAHM3_A/H is 12.0 V, measured at 41.7 A peak pulse current (IPPM) under the standardized 10/1000 µs double-exponential waveform. This value is guaranteed across the full operating temperature range (−55 °C to +150 °C) and defines the upper voltage limit imposed on protected circuitry during surge events.
Does SMA5J7.0CAHM3_A/H require a heatsink for 500 W pulse handling?
No, SMA5J7.0CAHM3_A/H does not require an external heatsink for single-pulse 500 W events. Its thermal design relies on short-duration pulse dissipation into the PCB copper pads (minimum 0.2" × 0.2" per terminal), and its RθJA of 80 °C/W applies only to steady-state conditions-not relevant for transient suppression duty cycles.
How does SMA5J7.0CAHM3_A/H differ from SMA5J7.0A (unidirectional) versions?
SMA5J7.0CAHM3_A/H is bidirectional with symmetrical clamping, while SMA5J7.0A is unidirectional and features a cathode band marking. The unidirectional version supports forward conduction and specifies IFSM = 40 A, whereas SMA5J7.0CAHM3_A/H omits IFSM and is rated only for reverse-biased surge suppression in AC or floating circuits.
SMA5J7.0CAHM3_A/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 7V
- Voltage - Breakdown (Min):
- 7.78V
- Voltage - Clamping (Max) @ Ipp:
- 12V
- Current - Peak Pulse (10/1000µs):
- 41.7A
- Power - Peak Pulse:
- 500W
- 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-214AC (SMA)
SMA5J7.0CAHM3_A/H FAQ
1.How can I place an order for SMA5J7.0CAHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J7.0CAHM3_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 SMA5J7.0CAHM3_A/H reliable?
The price and inventory of SMA5J7.0CAHM3_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 SMA5J7.0CAHM3_A/H is usually 5 days.
3.What payment methods are accepted for SMA5J7.0CAHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J7.0CAHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J7.0CAHM3_A/H?
SMA5J7.0CAHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J7.0CAHM3_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 SMA5J7.0CAHM3_A/H?
For technical support, including SMA5J7.0CAHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J7.0CAHM3_A/H requirements.
6.How does Aetrix verify that SMA5J7.0CAHM3_A/H is sourced from the original manufacturer or authorized distributors?
All SMA5J7.0CAHM3_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 SMA5J7.0CAHM3_A/H meets industry standards.
7.What is the process for return or replacement of SMA5J7.0CAHM3_A/H?
All SMA5J7.0CAHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J7.0CAHM3_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 SMA5J7.0CAHM3_A/H part is unused and in its original packaging.
Return procedure for SMA5J7.0CAHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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