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Vishay General Semiconductor - Diodes Division SMAJ60A-M3/5A
- Part No.:
- SMAJ60A-M3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ60A-M3/5A.pdf
- Description:
- TVS DIODE 60VWM 96.8VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,241
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Product details
Overview
SMAJ60A-M3/5A from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for robust overvoltage protection of sensitive electronics. It features a 60 V stand-off 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 with 10/1000 μs waveform - ideal for protecting MOSFETs, ICs, and sensor signal lines against inductive switching transients.
For engineers reviewing the SMAJ60A-M3/5A datasheet, SMAJ60A-M3/5A pinout, SMAJ60A-M3/5A application, or SMAJ60A-M3/5A equivalent, key selection criteria include its unidirectional polarity, 120 °C/W junction-to-ambient thermal resistance, halogen-free RoHS-compliant construction (M3 suffix), and AEC-Q101 qualification readiness - critical for automotive and industrial power rail protection design.
Technical Context
This TVS diode operates as a clamping device that remains high-impedance below 60 V and rapidly transitions to low-impedance conduction above its breakdown threshold. Its glass-passivated junction ensures stable leakage performance (<1.0 μA at VWM) and fast response time (<1.0 ns), enabling effective suppression of ESD and lightning-induced surges on DC power and signal lines.
The SMAJ60A-M3/5A is rated for 40 A non-repetitive forward surge current (IFSM) and supports continuous power dissipation of 3.3 W on infinite heatsink at 50 °C. Its M3 suffix confirms halogen-free, RoHS-compliant materials and JESD201 Class 2 whisker resistance - meeting stringent environmental and reliability requirements for commercial and automotive-grade designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 60 V - Maximum continuous reverse operating voltage before significant leakage begins; defines safe operating margin for protected circuitry. |
| VBR (Breakdown Voltage) | 66.7–73.7 V at 1 mA - Voltage range at which device enters avalanche conduction; tight tolerance enables precise overvoltage threshold setting. |
| VC (Clamping Voltage) | 96.8 V at 4.1 A (10/1000 μs) - Peak voltage seen by protected load during surge; determines minimum required voltage headroom for downstream components. |
| PPPM (Peak Pulse Power) | 400 W - Maximum transient energy absorption capability under standard 10/1000 μs waveform; sufficient for IEC 61000-4-5 Level 3 surges. |
| IPPM (Peak Pulse Current) | 4.1 A - Surge current level at which VC is specified; directly correlates with PCB trace sizing and fuse coordination. |
| TJmax | 150 °C - Maximum junction temperature; sets thermal derating limits for sustained operation in enclosed or high-ambient environments. |
| RθJA | 120 °C/W - Thermal resistance from junction to ambient on standard 0.2" × 0.2" copper pads; informs heatsinking requirements for repetitive surge duty cycles. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile plastic case with matte tin-plated leads solderable per J-STD-002 and JESD22-B102. Polarity indicated by cathode band; unidirectional configuration only.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias | Connected to ground or lower-potential node in unidirectional TVS configuration; forms return path during clamping. |
| Cathode | Current exit terminal in forward bias; marked with band | Connected to protected line (e.g., 60 V rail or signal); conducts surge current toward ground when VAK exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 μs) | Enables reliable suppression of high-energy transients without degradation across >1000 surge events under defined test conditions. |
| Glass passivated chip junction | Ensures stable reverse leakage (<1.0 μA at VWM) and long-term parameter stability under thermal cycling and humidity stress. |
| Halogen-free, RoHS-compliant (M3 suffix) | Meets IPC-1752A material declaration requirements and eliminates corrosive halogen emissions during reflow or end-of-life incineration. |
| MSL Level 1 (J-STD-020), 260 °C peak | Supports standard lead-free reflow profiles without preconditioning; eliminates moisture-related popcorning risk in automated assembly. |
| AEC-Q101 qualification ready | Base P/NHM3 variant meets automotive stress testing requirements including HTGB, H3TRB, and TCT - suitable for under-hood ECUs. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
|
Use Scenario: Protecting 12 V/24 V battery-fed control modules from load dump and alternator transients in passenger vehicles and commercial trucks. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between power input and ground, triggered within <1 ns to limit voltage excursion to ≤96.8 V. Use Value: Prevents latch-up or permanent damage to microcontrollers and CAN transceivers exposed to ISO 7637-2 Pulse 5a (12 V systems) and Pulse 5b (24 V systems). |
Use Scenario: Shielding analog output lines (e.g., 4–20 mA current loops) of pressure/temperature sensors in factory automation PLCs. IC Role / Device Role / Timing Role: Low-capacitance (≈100 pF) TVS connected across signal and return, clamping induced surges from nearby motor drives or relay coils. Use Value: Maintains signal integrity by limiting transient overshoot to <96.8 V while adding <0.1% gain error due to sub-μA leakage at 60 V. |
| Consumer Power Adapter Input Protection | Telecom DC Power Feed Protection |
|
Use Scenario: Safeguarding AC/DC adapter primary-side rectifier outputs against surge coupling from mains transients and capacitor discharge events. IC Role / Device Role / Timing Role: Unidirectional TVS mounted across bulk capacitor terminals, absorbing 400 W pulses without thermal runaway. Use Value: Extends adapter lifetime by preventing repeated overstress of electrolytic capacitors and secondary-side controllers during brownout recovery. |
Use Scenario: Protecting -48 V DC feeding circuits in telecom base station power distribution units from lightning-induced common-mode surges. IC Role / Device Role / Timing Role: TVS configured anode-to-ground on negative rail, clamping positive-going transients to prevent reverse-bias failure of downstream regulators. Use Value: Enables compliance with GR-1089-CORE Section 4.5.2 (lightning surge) while maintaining <1.0 μA standby leakage to minimize battery drain. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ60A-E3/5A | Same electrical specs; RoHS-compliant but contains brominated flame retardants (non-halogen-free) | Approved for commercial-grade industrial equipment where halogen-free mandate does not apply | Select when cost sensitivity outweighs halogen-free requirement and AEC-Q101 is not needed. |
| SMAJ60CA-M3/5A | Bidirectional version; symmetric VBR (66.7–73.7 V) in both polarities; same VC, PPPM, and package | Required for AC-coupled or floating signal lines subject to bipolar transients (e.g., RS-485, Ethernet PHY) | Choose only if bidirectional clamping is essential; unidirectional SMAJ60A-M3/5A offers lower leakage and simpler layout for DC rails. |
Compared with SMAJ60A-E3/5A, the SMAJ60A-M3/5A provides halogen-free compliance without sacrificing surge rating or thermal performance; versus SMAJ60CA-M3/5A, it delivers superior reverse leakage control and simplified grounding for single-polarity DC protection - making it optimal for automotive body control modules and industrial power supplies.
Availability
SMAJ60A-M3/5A is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface protection, and telecom DC feed protection requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SMAJ60A-M3/5A 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, efficiency, and application-specific optimization.
The SMAJ series is engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where robustness, consistency, and regulatory compliance are mandatory.
FAQ
What is the clamping voltage of SMAJ60A-M3/5A at its rated peak pulse current?
The SMAJ60A-M3/5A has a maximum clamping voltage (VC) of 96.8 V at 4.1 A peak pulse current (IPPM) under the standard 10/1000 μs waveform. This value is measured per JEDEC standards and represents the upper voltage limit imposed on protected circuitry during surge events. The SMAJ60A-M3/5A maintains this clamping performance across its full operating temperature range (-55 °C to +150 °C) with minimal drift.
Is SMAJ60A-M3/5A suitable for automotive applications?
Yes - the SMAJ60A-M3/5A is halogen-free, RoHS-compliant, and based on Vishay's AEC-Q101-qualified platform. While the base M3 suffix denotes commercial-grade qualification, the HM3 variant (e.g., SMAJ60A-HM3/5A) carries full AEC-Q101 certification for automotive use. The SMAJ60A-M3/5A shares identical electrical and thermal characteristics with HM3 versions, making it suitable for pre-qualification prototyping and non-safety-critical automotive subsystems.
How does the M3 suffix differ from E3 in SMAJ60A-M3/5A?
The M3 suffix in SMAJ60A-M3/5A indicates halogen-free, RoHS-compliant construction using bromine-free flame retardants, whereas E3 uses RoHS-compliant materials that may contain brominated compounds. Both meet JESD201 Class 2 whisker resistance and J-STD-020 MSL Level 1 reflow compatibility. The SMAJ60A-M3/5A is preferred for consumer electronics and green procurement programs requiring full halogen-free compliance per IEC 61249-2-21.
What is the thermal resistance of SMAJ60A-M3/5A, and how does it affect layout?
The SMAJ60A-M3/5A has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes no additional heatsinking; designers must allocate adequate copper area and consider airflow to avoid exceeding the 150 °C maximum junction temperature during repetitive surge events. For high-duty-cycle applications, thermal vias under the pads reduce RθJA by up to 30 %.
Can SMAJ60A-M3/5A be used in bidirectional signal protection?
No - SMAJ60A-M3/5A is strictly unidirectional, with polarity marked by a cathode band. For bidirectional protection (e.g., AC lines or differential buses), the SMAJ60CA-M3/5A variant must be used. Attempting to use SMAJ60A-M3/5A in reverse-biased configurations risks catastrophic failure due to lack of reverse breakdown specification. The SMAJ60A-M3/5A is optimized for DC power rail and single-ended signal line clamping only.
SMAJ60A-M3/5A 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:
- 1
- Bidirectional Channels:
- -
- 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)
SMAJ60A-M3/5A FAQ
1.How can I place an order for SMAJ60A-M3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ60A-M3/5A 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 SMAJ60A-M3/5A reliable?
The price and inventory of SMAJ60A-M3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ60A-M3/5A is usually 5 days.
3.What payment methods are accepted for SMAJ60A-M3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ60A-M3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ60A-M3/5A?
SMAJ60A-M3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ60A-M3/5A 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 SMAJ60A-M3/5A?
For technical support, including SMAJ60A-M3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ60A-M3/5A requirements.
6.How does Aetrix verify that SMAJ60A-M3/5A is sourced from the original manufacturer or authorized distributors?
All SMAJ60A-M3/5A 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 SMAJ60A-M3/5A meets industry standards.
7.What is the process for return or replacement of SMAJ60A-M3/5A?
All SMAJ60A-M3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ60A-M3/5A, 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 SMAJ60A-M3/5A part is unused and in its original packaging.
Return procedure for SMAJ60A-M3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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