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Vishay General Semiconductor - Diodes Division SMA5J8.5CHE3/5A
- Part No.:
- SMA5J8.5CHE3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J8.5CHE3/5A.pdf
- Description:
- TVS DIODE 8.5VWM 15.9VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,656
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Product details
Overview
SMA5J8.5CHE3/5A from Vishay General Semiconductor is a bi-directional transient voltage suppressor (TVS) diode in DO-214AC (SMA) package, designed for robust overvoltage protection on signal and power lines. It features a 8.5 V stand-off voltage (VWM), 9.44–10.4 V breakdown voltage (VBR), 14.4 V clamping voltage (VC) at 10 A peak pulse current (IPPM), and 500 W peak pulse power (PPPM) with 10/1000 µs waveform - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the SMA5J8.5CHE3/5A datasheet, SMA5J8.5CHE3/5A pinout, SMA5J8.5CHE3/5A application, or SMA5J8.5CHE3/5A equivalent, key selection criteria include bi-directional clamping capability, AEC-Q101 qualification, RoHS-compliant HE3 suffix, 150 °C max junction temperature, and compatibility with automated SMT placement on standard 5.0 mm × 5.0 mm copper pads.
Technical Context
This bi-directional TVS diode operates symmetrically in both polarities, enabling protection of AC-coupled or floating signal paths without polarity constraints. Its glass-passivated junction ensures stable VBR tolerance and low leakage (<1.0 µA at VWM), while low incremental surge resistance supports effective energy diversion during fast transients.
The device meets MSL Level 1 per J-STD-020 (peak reflow 260 °C), uses matte tin-plated leads compliant with J-STD-002 and JESD 22-B102, and is qualified to AEC-Q101 - confirming suitability for under-hood automotive environments where thermal cycling and vibration resilience are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 8.5 V - maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 9.44 V / 10.4 V at 1 mA - defines guaranteed breakdown threshold across production lot |
| VC @ IPPM | 14.4 V at 10 A - clamping voltage during 10/1000 µs surge, limiting downstream stress |
| PPPM | 500 W - peak transient power it can absorb without failure under standardized waveform |
| TJ max | +150 °C - enables operation in high-ambient environments like engine control units |
| Package | DO-214AC (SMA) - surface-mount outline with 5.28 mm length, 4.50 mm width, 2.29 mm height |
| AEC-Q101 | Qualified - validated for automotive reliability including temperature cycling, HTRB, and ESD |
Pinout & Package
DO-214AC (SMA) package: molded plastic case with two coplanar gull-wing leads; no polarity marking for bi-directional types; terminals are matte tin-plated for solderability and whisker resistance (JESD 201 Class 2).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bi-directional terminal pair | No functional distinction - either lead serves as input/output for transient suppression in both directions |
| Case | Non-electrical mechanical body | UL 94 V-0 rated molding compound; provides insulation and thermal path to PCB copper pads |
Key Features
| Feature | Design Value |
|---|---|
| Bi-directional clamping | Enables single-device protection of differential or AC signal lines without polarity concerns |
| AEC-Q101 qualification | Validates reliability for automotive applications including powertrain and ADAS sensor interfaces |
| Low clamping ratio (VC/VWM = 1.69) | Minimizes voltage overshoot during surge events, reducing risk to downstream ICs |
| MSL Level 1 rating | Allows use in standard lead-free reflow processes without pre-baking |
| Glass passivated junction | Improves long-term stability of VBR and leakage performance across temperature and life cycle |
Applications
| Automotive Sensor Protection | Industrial I/O 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: Bi-directional voltage clamp placed between signal line and ground, responding within <1 ns to transients. Use Value: Limits induced surges to ≤14.4 V, preserving integrity of 3.3 V/5 V microcontrollers and ADC front-ends. | Use Scenario: Safeguarding PLC digital input modules against field-wiring induced surges and ESD events. IC Role / Device Role / Timing Role: Primary transient shunt on 24 V DC input lines, absorbing up to 500 W for 1 ms. Use Value: Prevents false triggering and latch-up in optocoupler input stages during factory floor EMI events. |
| Consumer Power Adapter Input | Telecom Line Interface |
Use Scenario: Secondary-side surge suppression on 12 V DC output rails of wall adapters exposed to mains coupling. IC Role / Device Role / Timing Role: Standoff-clamp TVS parallel to load, activated only during overvoltage excursions. Use Value: Maintains regulated output integrity by clamping transients before they reach USB-PD controllers or LDOs. | Use Scenario: Protection of Ethernet PHY interface pins (e.g., MDI pairs) against lightning-induced surges per IEC 61000-4-5. IC Role / Device Role / Timing Role: Bi-directional shunt element on differential data lines, matched for common-mode rejection. Use Value: Delivers symmetrical clamping (±14.4 V) without distorting signal integrity up to 100 MHz. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J8.5AHE3/61 | Same electrical specs; differs only in tape-and-reel packaging (1800 pcs vs. 7500 pcs) and carrier size (7″ vs. 13″ reel) | No functional difference; suited for lower-volume prototyping or small-batch assembly | Select based on production volume and SMT line feeder compatibility |
| SMCJ8.5CAHE3/5A | Higher PPPM (1500 W), larger DO-214AB (SMC) package, same VWM/VBR/VC ratings | Better suited for higher-energy transients (e.g., 12 V battery rail); requires larger PCB footprint | Choose when system-level surge testing exceeds 500 W requirements or when thermal margin is constrained |
Compared with SMA5J8.5CHE3/5A, SMA5J8.5AHE3/61 offers identical protection performance in smaller reels for flexibility, while SMCJ8.5CAHE3/5A trades compactness for 3× higher surge capacity - making the SMA variant optimal for space-constrained, AEC-Q101–mandated signal-line protection.
Availability
SMA5J8.5CHE3/5A is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom line protection requiring stable component supply, full traceability, and AEC-Q101 compliance.
Supply support for SMA5J8.5CHE3/5A 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 application-specific optimization.
The SMA5J series belongs to Vishay's TRANSZORB® TVS platform, engineered specifically for high-power-density, surface-mount transient suppression in automotive, industrial, and communications infrastructure where AEC-Q101 validation and tight parametric control are mandatory.
FAQ
What is the polarity configuration of SMA5J8.5CHE3/5A?
SMA5J8.5CHE3/5A is a bi-directional TVS diode with symmetrical terminal behavior - neither lead is designated anode or cathode. There is no polarity marking on the device body, and it clamps equally in both directions, making it ideal for protecting AC-coupled or floating signal paths without orientation constraints during placement.
Is SMA5J8.5CHE3/5A qualified for automotive applications?
Yes, SMA5J8.5CHE3/5A carries the HE3 suffix, indicating AEC-Q101 qualification. This includes rigorous testing for temperature cycling, high-temperature reverse bias, and ESD robustness - confirming its suitability for under-hood and chassis-mounted automotive systems such as engine control sensors and ADAS camera interfaces.
What does the "HE3" suffix mean in SMA5J8.5CHE3/5A?
The "HE3" suffix in SMA5J8.5CHE3/5A denotes RoHS-compliant construction with AEC-Q101 qualification and JESD 201 Class 2 whisker resistance. It distinguishes this grade from commercial-only "E3" variants and confirms compliance with automotive reliability standards and lead-free assembly requirements.
What is the maximum clamping voltage of SMA5J8.5CHE3/5A under surge conditions?
The maximum clamping voltage (VC) of SMA5J8.5CHE3/5A is 14.4 V at 10 A peak pulse current (IPPM) with a 10/1000 µs waveform. This value is measured after the device enters avalanche conduction and represents the upper voltage limit imposed on protected circuitry during standardized surge events.
Can SMA5J8.5CHE3/5A be used in place of a uni-directional TVS diode?
No - SMA5J8.5CHE3/5A is strictly bi-directional and must not replace a uni-directional TVS (e.g., SMA5J8.5A) in DC-biased circuits where forward conduction would cause short-circuit failure. Its symmetrical structure lacks inherent polarity blocking, so it is unsuitable for applications requiring DC path isolation or rectification functionality.
SMA5J8.5CHE3/5A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 8.5V
- Voltage - Breakdown (Min):
- 9.44V
- Voltage - Clamping (Max) @ Ipp:
- 15.9V
- Current - Peak Pulse (10/1000µs):
- 31.4A
- 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)
SMA5J8.5CHE3/5A FAQ
1.How can I place an order for SMA5J8.5CHE3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J8.5CHE3/5A 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 SMA5J8.5CHE3/5A reliable?
The price and inventory of SMA5J8.5CHE3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J8.5CHE3/5A is usually 5 days.
3.What payment methods are accepted for SMA5J8.5CHE3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J8.5CHE3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J8.5CHE3/5A?
SMA5J8.5CHE3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J8.5CHE3/5A 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 SMA5J8.5CHE3/5A?
For technical support, including SMA5J8.5CHE3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J8.5CHE3/5A requirements.
6.How does Aetrix verify that SMA5J8.5CHE3/5A is sourced from the original manufacturer or authorized distributors?
All SMA5J8.5CHE3/5A 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 SMA5J8.5CHE3/5A meets industry standards.
7.What is the process for return or replacement of SMA5J8.5CHE3/5A?
All SMA5J8.5CHE3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J8.5CHE3/5A, 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 SMA5J8.5CHE3/5A part is unused and in its original packaging.
Return procedure for SMA5J8.5CHE3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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