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Vishay General Semiconductor - Diodes Division SMA5J7.0CAHE3_A/I
- Part No.:
- SMA5J7.0CAHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J7.0CAHE3_A/I.pdf
- Description:
- TVS DIODE 7VWM 12VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,312
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Product details
Overview
SMA5J7.0CAHE3_A/I from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for high-energy surge protection on signal and power lines. It features a 7.0 V stand-off voltage (VWM), 6.40–7.07 V breakdown voltage (VBR) at 10 mA, 500 W peak pulse power (10/1000 µs), 41.7 A peak pulse current (IPPM), and clamps to ≤12.0 V at rated surge. It is AEC-Q101 qualified and used in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the SMA5J7.0CAHE3_A/I datasheet, SMA5J7.0CAHE3_A/I pinout, SMA5J7.0CAHE3_A/I application, or SMA5J7.0CAHE3_A/I equivalent, key selection criteria include bidirectional clamping capability, 500 W surge rating with low clamping voltage, AEC-Q101 qualification status, SMA package thermal performance, and compatibility with automated SMT assembly under J-STD-002 solderability requirements.
Technical Context
This device operates as a voltage-clamped crowbar during transients, leveraging an avalanche junction to limit reverse voltage across protected circuits. Its bidirectional symmetry ensures identical clamping behavior in both polarities, eliminating polarity-sensitive layout constraints.
Designed for 10/1000 µs surge waveforms per ANSI/IEEE C62.35, it delivers 500 W peak pulse power with 12.0 V maximum clamping voltage at 41.7 A IPPM. Thermal resistance is 80 °C/W (junction-to-ambient) and 25 °C/W (junction-to-lead), enabling reliable operation up to 150 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.0 V - Maximum continuous reverse operating voltage before conduction begins; defines safe DC/AC working margin. |
| VBR min/max | 6.40 V / 7.07 V at 10 mA - Confirmed breakdown range ensuring predictable turn-on threshold under standardized test conditions. |
| VC @ IPPM | ≤12.0 V at 41.7 A - Clamping voltage under full-rated 10/1000 µs surge; determines maximum stress imposed on downstream ICs. |
| PPPM | 500 W - Peak pulse power handling capacity; defines survivability against lightning-induced or inductive-switching surges. |
| ID @ VWM | ≤800 µA - Reverse leakage at stand-off voltage; low value minimizes quiescent power loss and avoids false triggering. |
| TJ max | +150 °C - Maximum junction temperature; supports operation in under-hood automotive and industrial environments. |
| Package | SMA (DO-214AC) - Surface-mount package with 5.28 mm × 4.50 mm footprint and 2.29 mm height; optimized for automated placement and thermal dissipation on 5.0 mm × 5.0 mm copper pads. |
Pinout & Package
Package: SMA (DO-214AC), bidirectional configuration with no polarity marking; terminals are matte tin plated, solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Identical avalanche behavior in both directions; no cathode band marking required for bidirectional types. |
| Case (body) | Thermal and mechanical interface | Plastic body meets UL 94 V-0; mounted on 5.0 mm × 5.0 mm copper pads per datasheet fig. 2 for rated thermal derating. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC standard. |
| Low incremental surge resistance | Enables tight clamping (VC = 12.0 V) despite high IPPM (41.7 A), minimizing voltage overshoot during fast transients. |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without moisture sensitivity concerns or baking requirements. |
| Glass passivated junction | Enhances long-term stability and humidity resistance versus epoxy-passivated alternatives, critical for harsh-environment applications. |
| 500 W 10/1000 µs rating | Supports protection of CAN, LIN, RS-485, and sensor supply lines against ISO 7637-2 Pulse 1/2/5a and IEC 61000-4-5 surges. |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
Use Scenario: Protecting analog output lines of pressure/temperature sensors in engine control modules exposed to load dump and inductive switching noise. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed between sensor output and microcontroller ADC input. Use Value: Limits transient excursions to ≤12.0 V, preventing ADC saturation and latch-up while maintaining 7.0 V signal integrity during normal operation. |
Use Scenario: Shielding 24 V digital input channels on PLC modules from field-wiring induced surges and ground bounce. IC Role / Device Role / Timing Role: Primary overvoltage protection element at terminal block entry point, upstream of optocoupler or Schmitt trigger. Use Value: Absorbs 500 W surges without degradation, preserving input logic thresholds and enabling compliance with IEC 61000-4-4/5 immunity requirements. |
| Telecom Line Interface | Consumer Power Adapter Input |
Use Scenario: Safeguarding RS-485 transceivers in outdoor network equipment subjected to lightning-induced common-mode transients. IC Role / Device Role / Timing Role: Differential pair protector bridging A/B lines to ground, leveraging symmetrical bidirectional response. Use Value: Maintains signal integrity by clamping differential surges within 12.0 V window, avoiding receiver damage without adding propagation delay. |
Use Scenario: Secondary-side surge suppression on 5 V USB-C power delivery rails in smart home hubs. IC Role / Device Role / Timing Role: Fast-response shunt protector parallel to LDO input, triggered only during >7.0 V overvoltage events. Use Value: Prevents LDO failure during ESD or capacitive discharge events while drawing <800 µA leakage during nominal 5 V operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J7.0CAHM3_A/I | Halogen-free, RoHS-compliant variant with identical electrical specs and AEC-Q101 qualification. | No functional difference; selected when halogen-free material compliance is mandated by OEM or regional regulations. | Choose SMA5J7.0CAHM3_A/I if halogen-free composition is required; otherwise SMA5J7.0CAHE3_A/I offers standard RoHS compliance. |
| SMA6J7.0CAHE3_A/I | 600 W peak pulse power rating (vs. 500 W), same VWM/VBR/VC, identical SMA package and AEC-Q101 qualification. | Higher surge margin for designs targeting enhanced immunity to severe ISO 7637-2 Pulse 5a or IEC 61000-4-5 Level 4 events. | Select SMA6J7.0CAHE3_A/I when system-level surge testing requires >500 W headroom; otherwise SMA5J7.0CAHE3_A/I meets standard automotive and industrial requirements. |
Compared with SMA5J7.0CAHE3_A/I, SMA5J7.0CAHM3_A/I provides identical protection performance with halogen-free construction, while SMA6J7.0CAHE3_A/I increases surge robustness to 600 W without changing footprint or clamping behavior-enabling design scalability without PCB revision.
Availability
SMA5J7.0CAHE3_A/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom line protection requiring stable component supply and AEC-Q101 assurance.
Supply support for SMA5J7.0CAHE3_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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and automotive-grade qualification.
The SMA5J series is engineered for high-power-density transient suppression in space-constrained automotive and industrial systems, delivering 500 W surge capability in the compact SMA package with AEC-Q101 validation.
FAQ
What is the clamping voltage of the SMA5J7.0CAHE3_A/I under full-rated surge current?
The SMA5J7.0CAHE3_A/I clamps to a maximum of 12.0 V when subjected to its rated peak pulse current of 41.7 A (10/1000 µs waveform). This value is measured per ANSI/IEEE C62.35 and confirmed in the Vishay datasheet Document Number 88875, Table "ELECTRICAL CHARACTERISTICS", row for SMA5J7.0CA. The clamping voltage directly defines the maximum stress transferred to protected circuitry during surge events.
Is the SMA5J7.0CAHE3_A/I suitable for automotive applications?
Yes, the SMA5J7.0CAHE3_A/I is AEC-Q101 qualified, as explicitly stated in the Vishay datasheet revision 09-Jan-2024. It undergoes rigorous stress testing including temperature cycling, high-temperature reverse bias, and ESD per AEC-Q101 requirements. Its 150 °C maximum junction temperature and MSL Level 1 rating further support under-hood and chassis-mounted use cases where the SMA5J7.0CAHE3_A/I serves as primary surge protection.
What does the "CA" suffix indicate in SMA5J7.0CAHE3_A/I?
The "CA" suffix in SMA5J7.0CAHE3_A/I denotes a bidirectional configuration, meaning the device provides symmetrical transient suppression in both forward and reverse directions. As confirmed in the Vishay datasheet section "DEVICES FOR BIDIRECTION APPLICATIONS", electrical characteristics-including VBR, VC, and IPPM-apply identically in either polarity, and no cathode band marking is present on the SMA package body.
What is the thermal resistance of the SMA5J7.0CAHE3_A/I, and how does it affect PCB layout?
The SMA5J7.0CAHE3_A/I has a typical junction-to-ambient thermal resistance (RθJA) of 80 °C/W and junction-to-lead resistance (RθJL) of 25 °C/W, per the "THERMAL CHARACTERISTICS" table in the Vishay datasheet. To achieve rated 500 W surge performance, the device must be mounted on minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, as specified in Note (2) of the "MAXIMUM RATINGS" table-smaller pads cause thermal derating.
How does the SMA5J7.0CAHE3_A/I differ from unidirectional variants like SMA5J7.0AHE3_A/I?
The SMA5J7.0CAHE3_A/I is bidirectional with symmetrical clamping in both polarities and no polarity marking, whereas SMA5J7.0AHE3_A/I is unidirectional with a cathode band and only suppresses positive transients relative to cathode. Key differences include: SMA5J7.0CAHE3_A/I supports AC-coupled or floating-line protection (e.g., RS-485), while SMA5J7.0AHE3_A/I is used for DC-biased lines (e.g., 12 V supply rail); SMA5J7.0CAHE3_A/I has no IFSM rating (unidirectional only), and its ID limit is doubled for VWM ≤10 V per datasheet Note (3).
SMA5J7.0CAHE3_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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMA5J7.0CAHE3_A/I FAQ
1.How can I place an order for SMA5J7.0CAHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J7.0CAHE3_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 SMA5J7.0CAHE3_A/I reliable?
The price and inventory of SMA5J7.0CAHE3_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 SMA5J7.0CAHE3_A/I is usually 5 days.
3.What payment methods are accepted for SMA5J7.0CAHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J7.0CAHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J7.0CAHE3_A/I?
SMA5J7.0CAHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J7.0CAHE3_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 SMA5J7.0CAHE3_A/I?
For technical support, including SMA5J7.0CAHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J7.0CAHE3_A/I requirements.
6.How does Aetrix verify that SMA5J7.0CAHE3_A/I is sourced from the original manufacturer or authorized distributors?
All SMA5J7.0CAHE3_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 SMA5J7.0CAHE3_A/I meets industry standards.
7.What is the process for return or replacement of SMA5J7.0CAHE3_A/I?
All SMA5J7.0CAHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J7.0CAHE3_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 SMA5J7.0CAHE3_A/I part is unused and in its original packaging.
Return procedure for SMA5J7.0CAHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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