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Vishay General Semiconductor - Diodes Division SMA5J7.0CAHM3_A/I
- Part No.:
- SMA5J7.0CAHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J7.0CAHM3_A/I.pdf
- Description:
- TVS DIODE 7VWM 12VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,403
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Product details
Overview
SMA5J7.0CAHM3_A/I from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients on signal and 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/I datasheet, SMA5J7.0CAHM3_A/I pinout, SMA5J7.0CAHM3_A/I application, or SMA5J7.0CAHM3_A/I equivalent, key selection criteria include bidirectional clamping capability, halogen-free RoHS compliance, MSL Level 1 moisture sensitivity, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This device operates as a bidirectional avalanche diode, leveraging glass-passivated junction technology to achieve sub-nanosecond response time and low incremental surge resistance. Its symmetrical breakdown behavior (VBR min/max = 7.78 V / 8.60 V at 10 mA) ensures consistent clamping in both polarities without polarity marking.
The thermal design relies on RθJA = 80 °C/W and RθJL = 25 °C/W, enabling reliable operation up to TJ = 150 °C. Derating curves confirm usable surge current down to -55 °C ambient, supporting industrial and automotive under-hood environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.0 V - Maximum reverse stand-off voltage before significant leakage; defines safe operating window for protected circuit. |
| VBR (min/max) | 7.78 V / 8.60 V at 10 mA - Confirmed bidirectional avalanche threshold; ensures symmetric clamping onset. |
| VC @ IPPM | 12.0 V at 41.7 A - Clamped voltage during 500 W transient; limits stress on downstream ICs like microcontrollers or CAN transceivers. |
| PPPM | 500 W (10/1000 μs) - Peak surge power handling capacity; validated with derating above 25 °C per Fig. 2. |
| TJ range | -55 °C to +150 °C - Full operational junction temperature range; supports AEC-Q101 automotive qualification. |
| Package | SMA (DO-214AC) - Surface-mount outline with 5.28 mm max length; compatible with standard 7" or 13" tape-and-reel delivery. |
| Compliance | Halogen-free, RoHS-compliant, MSL Level 1 (260 °C peak reflow), JESD201 Class 2 whisker resistant. |
Pinout & Package
Package: SMA (DO-214AC), molded plastic case meeting UL 94 V-0 flammability rating; matte tin-plated leads solderable per J-STD-002 and JESD22-B102; no polarity marking for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional avalanche junction | No functional distinction between terminals; either terminal serves as anode or cathode depending on transient polarity. |
| Case (body) | Thermal and mechanical interface | Non-electrical; provides mechanical mounting and contributes to thermal dissipation via PCB copper pads (5.0 mm × 5.0 mm recommended). |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines (e.g., RS-485, CAN bus) without polarity concerns. |
| Low clamping ratio (VC/VWM = 1.71) | Minimizes overvoltage exposure during transients-critical for 3.3 V or 5 V logic interfaces. |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive applications including engine control modules and ADAS sensor units. |
| MSL Level 1 rating | Allows unlimited floor life and standard reflow profile (peak 260 °C), eliminating bake requirements pre-assembly. |
| Halogen-free construction | Meets automotive OEM environmental mandates (e.g., GMW3172, Ford WSS-M99P999-A1) without compromising surge robustness. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting analog output lines of pressure/temperature sensors in engine bay environments subject to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed directly at connector entry point to shunt transients before reaching ADC input or signal conditioner. Use Value: Maintains signal integrity under 500 W surges while meeting AEC-Q101 reliability requirements for 15-year vehicle service life. |
Use Scenario: Safeguarding 24 V digital input channels on programmable logic controllers exposed to relay coil flyback and ESD events. IC Role / Device Role / Timing Role: Primary overvoltage suppression element across input terminals, coordinated with series current-limiting resistor. Use Value: Limits clamped voltage to 12.0 V-well below 24 V system rail-preventing latch-up in input buffer ICs. |
| Telecom Line Interface | Consumer USB Port Protection |
Use Scenario: Transient suppression on RS-485 differential pairs in outdoor telecom base stations subjected to lightning-induced surges. IC Role / Device Role / Timing Role: Symmetric clamping device bridging A/B lines to ground, exploiting bidirectional behavior for common-mode surge rejection. Use Value: Achieves <1 ns response with 12.0 V clamping, preserving signal edge fidelity for high-speed (10 Mbps) data links. |
Use Scenario: Secondary-level ESD protection on VBUS and D+/D- lines of USB 2.0 ports in smart home hubs. IC Role / Device Role / Timing Role: Back-up TVS after primary polymer PTC and integrated ESD array, handling high-energy secondary transients. Use Value: Withstands 500 W surges while maintaining <1 μA leakage at 7.0 V-preserving battery life in always-on devices. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J7.0CAHE3_A/I | Same electrical specs and package; RoHS-compliant but not halogen-free; AEC-Q101 qualified (HE3 suffix). | Lacks halogen-free certification required by some Tier 1 automotive customers. | Select when halogen content is not restricted but AEC-Q101 qualification and RoHS compliance are mandatory. |
| SMA6J7.0CAHM3_A/I | Higher PPPM = 600 W; identical VWM, VBR, VC; same SMA package and HM3 halogen-free/AEC-Q101 spec. | Provides 20 % higher surge margin for designs facing extreme ISO 16750-2 Pulse 5a/b conditions. | Select when system-level surge testing exceeds 500 W requirements or long-term field reliability under repeated transients is critical. |
Compared with SMA5J7.0CAHM3_A/I, SMA5J7.0CAHE3_A/I trades halogen-free status for identical surge performance and qualification, while SMA6J7.0CAHM3_A/I delivers higher 600 W pulse power in the same footprint-enabling design margin extension without layout change.
Availability
SMA5J7.0CAHM3_A/I is available at Aetrix Electronics and suitable for automotive sensor units, industrial PLC I/O modules, and telecom line interface circuits requiring stable component supply with halogen-free, AEC-Q101-qualified transient protection.
Supply support for SMA5J7.0CAHM3_A/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 and automotive-grade solutions.
The SMA5J series is engineered for high-power-density transient suppression in space-constrained surface-mount applications, targeting automotive, industrial, and communications systems where robustness and qualification compliance are non-negotiable.
FAQ
What is the clamping voltage of SMA5J7.0CAHM3_A/I at its rated peak pulse current?
The SMA5J7.0CAHM3_A/I exhibits a maximum clamping voltage (VC) of 12.0 V when subjected to its rated peak pulse current of 41.7 A using the standardized 10/1000 μs waveform. This value is measured under specified test conditions per ANSI/IEEE C62.35 and confirmed in the Vishay datasheet revision 09-Jan-2024, Document Number 88875. The low VC ensures downstream components remain within safe operating limits during surge events.
Is SMA5J7.0CAHM3_A/I suitable for automotive applications?
Yes, SMA5J7.0CAHM3_A/I is explicitly qualified to AEC-Q101 standards, as indicated by the "HM3" suffix denoting halogen-free, RoHS-compliant, and automotive-grade construction. It operates reliably from -55 °C to +150 °C and meets MSL Level 1 reflow requirements-making it appropriate for engine control units, body electronics, and ADAS sensor interfaces where environmental ruggedness is essential.
Does SMA5J7.0CAHM3_A/I have polarity markings on the package?
No, SMA5J7.0CAHM3_A/I does not feature polarity markings because it is a bidirectional TVS diode. The device functions identically regardless of orientation across the protected line, eliminating the need for cathode band identification. This simplifies PCB layout and assembly for differential or floating signal paths such as CAN, RS-485, or Ethernet PHY interfaces.
What is the thermal resistance from junction to ambient for SMA5J7.0CAHM3_A/I?
The typical thermal resistance from junction to ambient (RθJA) for SMA5J7.0CAHM3_A/I is 80 °C/W, measured under standard conditions with 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes JEDEC-standard board layout and is used to calculate junction temperature rise under sustained power dissipation-critical for validating long-term reliability in thermally demanding applications.
How does the halogen-free status of SMA5J7.0CAHM3_A/I impact its environmental compliance?
The "HM3" suffix confirms SMA5J7.0CAHM3_A/I meets halogen-free requirements per IEC 61249-2-21, containing <900 ppm bromine and <900 ppm chlorine, with total halogens <1500 ppm. This satisfies stringent OEM mandates (e.g., Ford WSS-M99P999-A1, GMW3172) and supports end-of-life recycling without corrosive halogen emissions during PCB incineration.
SMA5J7.0CAHM3_A/I 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/I FAQ
1.How can I place an order for SMA5J7.0CAHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J7.0CAHM3_A/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 SMA5J7.0CAHM3_A/I reliable?
The price and inventory of SMA5J7.0CAHM3_A/I 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/I is usually 5 days.
3.What payment methods are accepted for SMA5J7.0CAHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J7.0CAHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J7.0CAHM3_A/I?
SMA5J7.0CAHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J7.0CAHM3_A/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 SMA5J7.0CAHM3_A/I?
For technical support, including SMA5J7.0CAHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J7.0CAHM3_A/I requirements.
6.How does Aetrix verify that SMA5J7.0CAHM3_A/I is sourced from the original manufacturer or authorized distributors?
All SMA5J7.0CAHM3_A/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 SMA5J7.0CAHM3_A/I meets industry standards.
7.What is the process for return or replacement of SMA5J7.0CAHM3_A/I?
All SMA5J7.0CAHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J7.0CAHM3_A/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 SMA5J7.0CAHM3_A/I part is unused and in its original packaging.
Return procedure for SMA5J7.0CAHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMA5J7.0CAHM3_A/I Tags
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