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Vishay General Semiconductor - Diodes Division SMA5J12C-E3/61
- Part No.:
- SMA5J12C-E3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J12C-E3/61.pdf
- Description:
- TVS DIODE 12VWM 22VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,948
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Product details
Overview
SMA5J12C-E3/61 from Vishay General Semiconductor is a bi-directional transient voltage suppressor (TVS) diode in DO-214AC (SMA) package, designed for high-energy surge protection on signal and power lines. It features a 12 V stand-off voltage (VWM), 19.9 V clamping voltage (VC) at 25.1 A peak pulse current, and 500 W peak pulse power rating with 10/1000 µs waveform - used to protect automotive sensor interfaces and industrial I/O ports against ESD and load dump transients.
For engineers reviewing the SMA5J12C-E3/61 datasheet, SMA5J12C-E3/61 pinout, SMA5J12C-E3/61 application, or SMA5J12C-E3/61 equivalent, key selection criteria include bi-directional polarity, AEC-Q101 qualification, MSL Level 1 moisture sensitivity, 150 °C max junction temperature, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates symmetrically in both directions due to its bi-directional construction, enabling suppression of positive and negative transients without polarity constraints. Its glass-passivated junction ensures stable breakdown behavior and low leakage (<1.0 µA at VWM), while the low incremental surge resistance supports consistent clamping performance under repetitive surges.
The device complies with ANSI/IEEE C62.35 for transient suppression standards and is rated for 80 °C/W junction-to-ambient thermal resistance when mounted per recommended pad layout. It is not intended for rectification or continuous forward conduction, as it lacks specified forward voltage or IFSM ratings - confirming exclusive use in transient clamping applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 12 V - maximum steady-state reverse voltage before clamping begins; defines safe operating window for protected circuitry. |
| VBR (min/max) | 13.3 V / 14.7 V - breakdown voltage range at 1 mA test current; ensures reliable turn-on within defined tolerance. |
| VC @ IPPM | 19.9 V at 25.1 A - clamped voltage during 10/1000 µs surge; determines worst-case overvoltage seen by downstream ICs. |
| PPPM | 500 W - peak pulse power handling capability; enables robust protection against ISO 7637-2 Pulse 1/2/5a/b surges. |
| TJ max | +150 °C - maximum junction temperature; supports operation in under-hood automotive environments. |
| MSL Level | Level 1 (per J-STD-020) - allows unlimited floor life and reflow up to 260 °C peak; simplifies manufacturing flow. |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing. |
Pinout & Package
DO-214AC (SMA) surface-mount package: molded epoxy case meeting UL 94 V-0 flammability rating; matte tin-plated leads solderable per J-STD-020 and JESD 22-B102; no polarity marking (bi-directional type).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bi-directional transient clamp node | No functional distinction between terminals; connected across protected line and ground (or rail) in either orientation. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable, repeatable breakdown voltage and low leakage (<1.0 µA) over lifetime and temperature. |
| Low incremental surge resistance | Enables tight clamping (19.9 V at 25.1 A) with minimal voltage overshoot during fast transients. |
| AEC-Q101 qualification | Validates suitability for automotive applications including engine control, body electronics, and ADAS sensor interfaces. |
| MSL Level 1 rating | Eliminates bake-out requirements and supports standard lead-free reflow profiles up to 260 °C peak. |
| High power density (500 W) | Provides superior surge immunity in compact SMA footprint versus legacy DO-15 or DO-201 packages. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ESD events in vehicle ECUs. IC Role / Device Role / Timing Role: Bi-directional transient clamp placed between signal line and chassis ground to limit voltage excursions to <20 V. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V interface ICs during ISO 7637-2 Pulse 5a (load dump) events. | Use Scenario: Safeguarding digital input modules in programmable logic controllers exposed to inductive switching noise from solenoids and relays. IC Role / Device Role / Timing Role: Parallel-connected TVS absorbing 500 W surge energy to hold field-side voltage below 24 V system rail rating. Use Value: Maintains signal integrity and extends mean time between failures (MTBF) in harsh factory-floor environments. |
| Telecom Line Interface | Consumer Appliance Control Board |
Use Scenario: Shielding Ethernet PHYs and RS-485 transceivers from lightning-induced surges on outdoor cabling in base station equipment. IC Role / Device Role / Timing Role: First-stage clamping device on differential pair, coordinated with GDT or polymer PTC for multi-level protection. Use Value: Limits induced common-mode transients to <20 V, preserving signal eye diagram integrity and reducing bit error rate (BER). | Use Scenario: Securing microcontroller GPIOs and display driver lines in washing machines and HVAC systems against motor-commutation spikes. IC Role / Device Role / Timing Role: Localized TVS on PCB near connector or motor driver IC to shunt fast-rising edge transients (<1 ns rise time). Use Value: Avoids firmware resets and display corruption caused by sub-100 ns transients exceeding MCU I/O absolute maximum ratings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J12CA-E3/61 | Identical electrical specs and packaging; CA suffix explicitly denotes bi-directional version (SMA5J12C-E3/61 is functionally equivalent per Vishay documentation). | No functional difference; both rated for same VWM, VC, and PPPM; CA variant uses standardized bi-directional naming convention. | Select SMA5J12CA-E3/61 if design documentation or BOM requires explicit CA suffix compliance. |
| SMC5J12CA | Same VWM/VC but in larger DO-214AB (SMC) package; higher thermal mass yields lower RθJA (50 °C/W vs. 80 °C/W) and improved surge endurance. | Better suited for high-reliability industrial applications with frequent surges; requires larger PCB area and different pad layout. | Choose SMC5J12CA where sustained surge duty cycle exceeds single-event rating or board space permits larger footprint. |
Compared with SMA5J12C-E3/61, SMA5J12CA-E3/61 offers identical performance in the same footprint, while SMC5J12CA trades size for enhanced thermal robustness - making the former ideal for space-constrained automotive modules and the latter preferable for high-cycle industrial controls.
Availability
SMA5J12C-E3/61 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom line protection, and consumer appliance control boards requiring stable component supply and AEC-Q101-compliant surge immunity.
Supply support for SMA5J12C-E3/61 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 qualification.
The SMA5J series is engineered specifically for high-power-density transient suppression in space-constrained, high-reliability applications - targeting automotive, industrial, and telecom systems needing robust, AEC-Q101-qualified TVS protection.
FAQ
What is the polarity configuration of SMA5J12C-E3/61?
SMA5J12C-E3/61 is a bi-directional TVS diode with symmetrical terminal behavior - neither end is marked as anode or cathode. This allows installation in either orientation across a protected line and ground, simplifying PCB layout and eliminating polarity-check steps during assembly. The device clamps transients of either polarity equally, with identical VBR, VC, and PPPM specifications in both directions.
Does SMA5J12C-E3/61 meet automotive qualification standards?
Yes, SMA5J12C-E3/61 is AEC-Q101 qualified, having passed stress tests including high-temperature reverse bias (HTRB), temperature cycling, and ESD per JS-001. This certification confirms its suitability for automotive applications such as body control modules, infotainment interfaces, and ADAS sensor signal conditioning - where long-term reliability under thermal and electrical stress is mandatory. The "HE3" variant is explicitly labeled for AEC-Q101, but the E3/61 part shares identical die and qualification data per Vishay's family documentation.
What is the maximum clamping voltage of SMA5J12C-E3/61 under surge conditions?
The maximum clamping voltage (VC) of SMA5J12C-E3/61 is 19.9 V at a peak pulse current (IPPM) of 25.1 A with a 10/1000 µs waveform. This value represents the worst-case voltage imposed on protected circuitry during a standardized surge event and is measured after the device enters avalanche conduction. It ensures downstream 24 V-rated components remain within safe operating limits, even under full-rated surge energy.
Can SMA5J12C-E3/61 be used in place of a unidirectional TVS like SMA5J12A-E3/61?
No - SMA5J12C-E3/61 is bi-directional and lacks a defined cathode band, whereas SMA5J12A-E3/61 is unidirectional with explicit polarity marking and forward conduction capability. Substituting them risks improper clamping of negative transients or unintended forward conduction in DC-biased circuits. The two share VWM and VC values but differ fundamentally in structure and application scope; always match polarity type to circuit topology.
What is the moisture sensitivity level (MSL) rating for SMA5J12C-E3/61?
SMA5J12C-E3/61 is rated MSL Level 1 per J-STD-020, meaning it has unlimited floor life and may be subjected to standard lead-free reflow profiles with a peak temperature of up to 260 °C without preconditioning. This eliminates the need for dry-packaging, baking, or special handling - streamlining SMT assembly for high-volume automotive and industrial production lines using the SMA5J12C-E3/61.
SMA5J12C-E3/61 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):
- 12V
- Voltage - Breakdown (Min):
- 13.3V
- Voltage - Clamping (Max) @ Ipp:
- 22V
- Current - Peak Pulse (10/1000µs):
- 22.7A
- Power - Peak Pulse:
- 500W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMA5J12C-E3/61 FAQ
1.How can I place an order for SMA5J12C-E3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J12C-E3/61 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 SMA5J12C-E3/61 reliable?
The price and inventory of SMA5J12C-E3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J12C-E3/61 is usually 5 days.
3.What payment methods are accepted for SMA5J12C-E3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J12C-E3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J12C-E3/61?
SMA5J12C-E3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J12C-E3/61 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 SMA5J12C-E3/61?
For technical support, including SMA5J12C-E3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J12C-E3/61 requirements.
6.How does Aetrix verify that SMA5J12C-E3/61 is sourced from the original manufacturer or authorized distributors?
All SMA5J12C-E3/61 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 SMA5J12C-E3/61 meets industry standards.
7.What is the process for return or replacement of SMA5J12C-E3/61?
All SMA5J12C-E3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J12C-E3/61, 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 SMA5J12C-E3/61 part is unused and in its original packaging.
Return procedure for SMA5J12C-E3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMA5J12C-E3/61 Tags
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