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Vishay General Semiconductor - Diodes Division SMAJ60-E3/5A
- Part No.:
- SMAJ60-E3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ60-E3/5A.pdf
- Description:
- TVS DIODE 60VWM 107VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:5,079
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Product details
Overview
SMAJ60-E3/5A from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in DO-214AC (SMA) package, designed for clamping voltage transients on power and signal lines. It features a 60 V stand-off voltage (VWM), 66.7–81.5 V breakdown voltage (VBR at 1 mA), 107 V maximum clamping voltage (VC) at 3.7 A peak pulse current, and 400 W peak pulse power rating with 10/1000 µs waveform.
For engineers reviewing the SMAJ60-E3/5A datasheet, SMAJ60-E3/5A pinout, SMAJ60-E3/5A application, or SMAJ60-E3/5A equivalent, this device is selected for robust overvoltage protection in DC power rails, automotive sensor interfaces, and industrial I/O circuits where fast response (<1 ps), low clamping ratio (VC/VWM = 1.78), and RoHS-compliant automated assembly are required.
Technical Context
This unidirectional TVS diode operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (>1 MΩ leakage at 60 V), then avalanches rapidly when reverse voltage exceeds VBR, limiting transient energy by diverting surge current to ground. Its glass-passivated junction ensures stable breakdown and low incremental surge resistance.
Thermal performance is defined by RθJA = 120 °C/W (on 0.2" × 0.2" copper pads) and TJ(max) = +150 °C, supporting operation in automotive under-hood and industrial control environments. It meets J-STD-020 MSL Level 1 and withstands solder reflow up to 260 °C for 40 s.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VWM) | 60 V - Maximum continuous reverse operating voltage before significant leakage begins |
| Breakdown Voltage (VBR) | 66.7–81.5 V at 1 mA - Confirmed avalanche onset range ensuring reliable triggering margin above VWM |
| Clamping Voltage (VC) | 107 V at 3.7 A (10/1000 µs) - Limits transient voltage seen by protected ICs to safe levels |
| Peak Pulse Power (PPPM) | 400 W - Sustains single 10/1000 µs surges without degradation (derated to 300 W above 78 V) |
| Peak Pulse Current (IPPM) | 3.7 A - Maximum non-repetitive surge current the device can safely clamp |
| Leakage Current (ID) | 1.0 µA max at 60 V - Ensures minimal standby power loss and signal integrity in high-impedance circuits |
| Operating Temperature | −55 °C to +150 °C - Supports deployment in extended-temperature automotive and industrial applications |
Pinout & Package
Package: DO-214AC (SMA), surface-mount, molded plastic case with matte tin-plated leads. Cathode identified by a band at one end; polarity critical for unidirectional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection to protected line | Connected to circuit node requiring overvoltage clamping (e.g., VIN, signal line) |
| Cathode | High-side connection to ground or reference | Provides low-impedance path to ground during transient events; marked with band |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 µs) | Enables protection against IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) on 12–24 V systems |
| Fast response time (<1 ps) | Clamps transients before sensitive downstream components (e.g., MCU I/O, CAN transceivers) experience overstress |
| Glass-passivated junction | Ensures stable VBR over lifetime and improved reliability vs. epoxy-passivated alternatives |
| MSL Level 1, 260 °C reflow compatible | Supports standard lead-free SMT assembly without pre-baking or special handling |
| RoHS-compliant, commercial-grade (E3 suffix) | Meets environmental compliance requirements for consumer, computing, and industrial end equipment |
Applications
| Automotive Sensor Interface | Industrial PLC Digital Input |
|---|---|
Use Scenario: Protecting 5–24 V analog/digital sensor outputs (e.g., temperature, pressure) from load dump and inductive switching transients in vehicle ECUs. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between sensor signal line and chassis ground. Use Value: Clamps transients to ≤107 V while maintaining <1 µA leakage at 60 V, preserving signal accuracy and preventing microcontroller reset. |
Use Scenario: Safeguarding 24 V DC digital input channels on programmable logic controllers against field-wiring surges and ESD. IC Role / Device Role / Timing Role: Standoff-rated TVS on input terminal block, upstream of optocoupler or Schmitt trigger. Use Value: Withstands 400 W pulses without degradation, enabling >100,000 surge cycles per IEC 61000-4-5 testing requirements. |
| DC Power Rail Protection | Telecom Line Interface |
Use Scenario: Secondary overvoltage protection on 48 V telecom or industrial power distribution boards after primary MOV or fuse. IC Role / Device Role / Timing Role: Fast-reacting clamping device across VDD–GND, sized for localized surge suppression. Use Value: Low clamping ratio (107 V / 60 V = 1.78) limits stress on downstream DC-DC converters and PMICs during lightning-induced surges. |
Use Scenario: Protecting RS-485/RS-232 interface ICs on base station backplane cards from induced lightning surges on long cable runs. IC Role / Device Role / Timing Role: Unidirectional TVS on each data line referenced to local ground plane. Use Value: 120 °C/W thermal resistance allows stable operation on FR-4 PCBs with minimal copper area, reducing layout complexity. |
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 | Lower VBR range (66.7–73.7 V), tighter tolerance; clamps at 96.8 V @ 4.1 A | Better suited for lower-voltage-margin designs where tighter VBR control reduces clamping uncertainty | Select SMAJ60A-E3/5A when system VMAX is closer to 60 V and clamping headroom must be minimized |
| SMBJ60-E3/5A | Same electrical specs but in larger DO-214AA (SMB) package; higher PPPM = 600 W | Offers greater surge endurance and lower thermal resistance (RθJA = 80 °C/W), suitable for higher-duty-cycle environments | Choose SMBJ60-E3/5A when board space permits and surge repetition rate exceeds 0.01% duty cycle |
Compared with SMAJ60-E3/5A, SMAJ60A-E3/5A provides tighter breakdown control at the cost of reduced surge current margin, while SMBJ60-E3/5A trades footprint size for significantly higher thermal and surge handling capability-enabling longer service life in repetitive transient environments.
Availability
SMAJ60-E3/5A is available at Aetrix Electronics and suitable for automotive sensor protection, industrial PLC inputs, and DC power rail safeguarding requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SMAJ60-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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The SMAJ series is engineered for high-reliability transient suppression in harsh environments, targeting automotive, industrial, and telecom applications where robustness, fast response, and consistent clamping behavior are critical.
FAQ
What is the maximum clamping voltage of the SMAJ60-E3/5A under standard test conditions?
The SMAJ60-E3/5A has a maximum clamping voltage (VC) of 107 V when subjected to a 10/1000 µs waveform at 3.7 A peak pulse current. This value is measured per JEDEC standards and reflects the upper limit of voltage the device allows across its terminals during a transient event, directly protecting downstream components from overvoltage stress.
Is the SMAJ60-E3/5A unidirectional or bidirectional, and how is polarity identified?
The SMAJ60-E3/5A is a unidirectional TVS diode. Polarity is indicated by a cathode band printed on the device body - the banded end connects to ground or the reference potential, while the unbanded end connects to the line being protected. Bidirectional variants use the "CA" suffix (e.g., SMAJ60CA).
Does the SMAJ60-E3/5A meet automotive qualification standards?
The SMAJ60-E3/5A is RoHS-compliant commercial-grade (E3 suffix) and does not carry AEC-Q101 qualification. For automotive applications requiring AEC-Q101, the HE3-suffix variant (e.g., SMAJ60AHE3/5A) is specified and qualified per that standard - the SMAJ60-E3/5A is intended for industrial, computing, and telecom use.
What is the thermal resistance and maximum junction temperature of the SMAJ60-E3/5A?
The SMAJ60-E3/5A has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W when mounted on 0.2" × 0.2" copper pads, and a maximum junction temperature (TJ(max)) of +150 °C. These values define its safe operating envelope under sustained power dissipation and ambient temperature extremes.
Can the SMAJ60-E3/5A be used in place of a Zener diode for overvoltage protection?
While both are PN-junction devices, the SMAJ60-E3/5A is optimized for transient suppression-not steady-state regulation. It delivers superior surge handling (400 W, 3.7 A) and faster response (<1 ps) than general-purpose Zeners, but lacks tight voltage tolerance for precision biasing. Use SMAJ60-E3/5A only for clamping transients, not for DC voltage reference.
SMAJ60-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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 60V
- Voltage - Breakdown (Min):
- 66.7V
- Voltage - Clamping (Max) @ Ipp:
- 107V
- Current - Peak Pulse (10/1000µs):
- 3.7A
- 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)
SMAJ60-E3/5A FAQ
1.How can I place an order for SMAJ60-E3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ60-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 SMAJ60-E3/5A reliable?
The price and inventory of SMAJ60-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 SMAJ60-E3/5A is usually 5 days.
3.What payment methods are accepted for SMAJ60-E3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ60-E3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ60-E3/5A?
SMAJ60-E3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ60-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 SMAJ60-E3/5A?
For technical support, including SMAJ60-E3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ60-E3/5A requirements.
6.How does Aetrix verify that SMAJ60-E3/5A is sourced from the original manufacturer or authorized distributors?
All SMAJ60-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 SMAJ60-E3/5A meets industry standards.
7.What is the process for return or replacement of SMAJ60-E3/5A?
All SMAJ60-E3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ60-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 SMAJ60-E3/5A part is unused and in its original packaging.
Return procedure for SMAJ60-E3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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