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Vishay General Semiconductor - Diodes Division SMAJ60CA-E3/5A
- Part No.:
- SMAJ60CA-E3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ60CA-E3/5A.pdf
- Description:
- TVS DIODE 60VWM 96.8VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,400
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Product details
Overview
SMAJ60CA-E3/5A from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for robust overvoltage protection of sensitive electronics. It features a 60 V standoff voltage (VWM), 66.7–73.7 V breakdown voltage (VBR) at 1 mA, 96.8 V maximum clamping voltage (VC) at 4.1 A peak pulse current, and 400 W peak pulse power rating (10/1000 μs waveform). It is widely deployed to protect MOSFETs, ICs, and sensor signal lines in automotive and industrial power supply interfaces.
For engineers reviewing the SMAJ60CA-E3/5A datasheet, SMAJ60CA-E3/5A pinout, SMAJ60CA-E3/5A application, or SMAJ60CA-E3/5A equivalent, key selection criteria include bidirectional clamping capability, low clamping ratio (VC/VWM = 1.61), AEC-Q101 qualification eligibility (via HE3 suffix variants), thermal resistance (RθJA = 120 °C/W), and compatibility with automated SMT placement on standard PCB copper pads.
Technical Context
This device operates as a voltage-clamped crowbar during transients - its silicon avalanche junction responds in <1 ps to clamp induced surges above VWM, diverting current away from protected circuitry. Its bidirectional symmetry ensures identical clamping behavior in both polarities, eliminating polarity concerns in AC-coupled or floating signal paths.
The SMAJ60CA-E3/5A is rated for non-repetitive 400 W pulses (10/1000 μs) up to 150 °C junction temperature, with derating above 25 °C per Figure 2. Its 30 °C/W junction-to-lead thermal resistance enables effective heat dissipation when mounted on 5.0 mm × 5.0 mm copper pads per JEDEC standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 60 V - Maximum continuous reverse operating voltage before significant leakage; defines upper limit of normal signal swing. |
| VBR (min/max) | 66.7 V / 73.7 V at 1 mA - Ensures reliable triggering above VWM with margin against tolerance drift and temperature variation. |
| VC @ IPPM | 96.8 V at 4.1 A - Clamping voltage under 400 W surge; limits stress on downstream components to safe levels. |
| PPPM | 400 W (10/1000 μs) - Peak transient energy handling capacity; sufficient for ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 Level 3 surges. |
| IFSM | 40 A (8.3 ms half-sine) - Withstands brief inrush or fault currents without bond wire failure. |
| TJ max | 150 °C - Enables operation in under-hood automotive environments and high-ambient industrial enclosures. |
| RθJA | 120 °C/W - Requires minimum 5.0 mm × 5.0 mm copper pad per terminal for thermal compliance at full power. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile plastic case with matte tin-plated leads; meets UL 94 V-0 and J-STD-002 solderability standards. No polarity marking - bidirectional construction eliminates cathode/anode distinction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient current path | Both terminals function identically; surge current flows bidirectionally through the same avalanche junction. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR, VC, and IPPM in both directions - simplifies layout for AC signals and differential buses without polarity routing constraints. |
| 400 W peak pulse power | Rated per 10/1000 μs waveform - provides proven immunity against common automotive load-dump and inductive switching transients. |
| Low clamping ratio | VC/VWM = 1.61 - minimizes overvoltage overshoot during clamping, reducing risk of latch-up or gate oxide damage in protected FETs/ICs. |
| AEC-Q101 qualification path | Available via HE3/HM3 suffix variants - supports automotive-grade reliability requirements including HTOL, TCT, and ESD testing. |
| MSL Level 1 | Reflow-compatible up to 260 °C peak - enables single-pass lead-free reflow without moisture sensitivity concerns. |
Applications
| Automotive Power Line Protection | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load-dump transients (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role / Timing Role: Primary overvoltage crowbar placed across input rail upstream of DC-DC converters and LDOs. Use Value: Limits rail voltage to ≤96.8 V during 100 V/100 ms transients, preventing regulator shutdown and MCU brownout. |
Use Scenario: Shielding analog outputs of pressure/temperature sensors from ESD and cable discharge events in factory automation. IC Role / Device Role / Timing Role: Low-capacitance (<50 pF at 0 V) shunt protector on 4–20 mA or 0–10 V output lines. Use Value: Clamps ±8 kV contact ESD (IEC 61000-4-2) within nanoseconds while adding <0.1% gain error to precision analog signals. |
| Telecom Interface Surge Suppression | Consumer Device USB Port Protection |
Use Scenario: Safeguarding RS-485 transceivers in outdoor telecom cabinets exposed to lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Secondary-level TVS placed after gas discharge tube (GDT) front-end for fast-response clamping. Use Value: Handles residual 1 kV/0.5 A surge (IEC 61000-4-5) after GDT conduction, limiting transceiver stress to <100 V. |
Use Scenario: Preventing ESD damage to USB 2.0 data lines (D+/D−) and VBUS in portable speakers and smart home hubs. IC Role / Device Role / Timing Role: Bidirectional shunt device across each line pair, leveraging symmetry for D+ and D− protection. Use Value: Survives ±15 kV air discharge (IEC 61000-4-2) without degradation, maintaining signal integrity up to 480 Mbps. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ60A-E3/5A | Unidirectional variant; same VWM, VBR, VC, and PPPM, but requires correct polarity orientation. | Only suitable where circuit ground reference is fixed and reverse voltage cannot occur. | Select SMAJ60A-E3/5A only if system topology guarantees unidirectional voltage stress and layout allows polarity-aware placement. |
| SMBJ60CA-T | Same electrical specs but SMB (DO-214AA) package - 2.5 mm wider body, higher thermal mass (RθJA ≈ 85 °C/W), and 600 W PPPM. | Better suited for higher-duty-cycle or higher-ambient environments where thermal headroom is critical. | Choose SMBJ60CA-T when board space permits larger footprint and sustained surge duty exceeds SMAJ60CA-E3/5A's 400 W limit. |
Compared with SMAJ60A-E3/5A, the SMAJ60CA-E3/5A eliminates polarity dependency for simplified design-in; compared with SMBJ60CA-T, it trades thermal performance and peak power for compactness and cost efficiency in space-constrained consumer and telecom modules.
Availability
SMAJ60CA-E3/5A is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor interface, telecom surge protection, and consumer USB port hardening requiring stable component supply and RoHS-compliant manufacturing.
Supply support for SMAJ60CA-E3/5A 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, rectifiers, TVS devices, and optoelectronics with emphasis on reliability, power handling, and automotive qualification.
The SMAJ series was engineered specifically for high-energy transient suppression in harsh environments - balancing compact size, fast response, and repeatable clamping performance across automotive, industrial, and communications systems.
FAQ
What is the clamping voltage of the SMAJ60CA-E3/5A under a 400 W transient?
The SMAJ60CA-E3/5A clamps to a maximum of 96.8 V when subjected to its rated 400 W peak pulse (10/1000 μs waveform) at 4.1 A. This value is measured per Figure 1 and Table 1 in the Vishay datasheet 88390 and represents worst-case VC at TA = 25 °C with recommended PCB pad layout. The SMAJ60CA-E3/5A maintains this clamping performance across its full operating temperature range.
Is the SMAJ60CA-E3/5A suitable for automotive applications?
Yes - while the base SMAJ60CA-E3/5A is commercial-grade, Vishay offers AEC-Q101 qualified versions under the HE3 and HM3 suffixes (e.g., SMAJ60CAHE3_A/I). These variants undergo extended reliability testing including HTOL, temperature cycling, and ESD validation. The SMAJ60CA-E3/5A itself shares identical electrical characteristics and package construction, making it a direct drop-in candidate for qualification-ready designs.
How does the bidirectional design of the SMAJ60CA-E3/5A affect PCB layout?
The SMAJ60CA-E3/5A has no polarity marking and functions identically in both directions, so PCB layout requires no anode/cathode orientation checks. This eliminates assembly errors and simplifies routing for AC-coupled lines, differential pairs (e.g., RS-485), or floating grounds. The SMAJ60CA-E3/5A can be placed symmetrically across any two nodes needing mutual overvoltage protection without signal direction assumptions.
What is the maximum operating temperature for the SMAJ60CA-E3/5A?
The SMAJ60CA-E3/5A has a maximum junction temperature (TJ) of +150 °C and operates across –55 °C to +150 °C. Its thermal resistance (RθJA = 120 °C/W) means that at 25 °C ambient and full 400 W pulse, junction temperature rises ~48 °C - well within limit. For continuous operation, derating curves in Figure 2 must be applied; the SMAJ60CA-E3/5A remains functional up to 125 °C ambient with appropriate copper area.
Does the SMAJ60CA-E3/5A meet RoHS and halogen-free requirements?
Yes - the "E3" suffix denotes RoHS-compliant, commercial-grade construction with matte tin-plated leads. For halogen-free compliance, Vishay offers the M3 variant (e.g., SMAJ60CA-M3/5A). Both E3 and M3 versions meet JESD201 Class 2 whisker resistance and J-STD-020 MSL Level 1 reflow specifications. The SMAJ60CA-E3/5A is fully compliant with EU RoHS Directive 2011/65/EU and associated exemptions.
SMAJ60CA-E3/5A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 60V
- Voltage - Breakdown (Min):
- 66.7V
- Voltage - Clamping (Max) @ Ipp:
- 96.8V
- Current - Peak Pulse (10/1000µs):
- 4.1A
- Power - Peak Pulse:
- 400W
- 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)
SMAJ60CA-E3/5A FAQ
1.How can I place an order for SMAJ60CA-E3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ60CA-E3/5A 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 SMAJ60CA-E3/5A reliable?
The price and inventory of SMAJ60CA-E3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ60CA-E3/5A is usually 5 days.
3.What payment methods are accepted for SMAJ60CA-E3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ60CA-E3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ60CA-E3/5A?
SMAJ60CA-E3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ60CA-E3/5A 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 SMAJ60CA-E3/5A?
For technical support, including SMAJ60CA-E3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ60CA-E3/5A requirements.
6.How does Aetrix verify that SMAJ60CA-E3/5A is sourced from the original manufacturer or authorized distributors?
All SMAJ60CA-E3/5A 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 SMAJ60CA-E3/5A meets industry standards.
7.What is the process for return or replacement of SMAJ60CA-E3/5A?
All SMAJ60CA-E3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ60CA-E3/5A, 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 SMAJ60CA-E3/5A part is unused and in its original packaging.
Return procedure for SMAJ60CA-E3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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