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Vishay General Semiconductor - Diodes Division SMAJ13A-E3/61
- Part No.:
- SMAJ13A-E3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ13A-E3/61.pdf
- Description:
- TVS DIODE 13VWM 21.5VC DO214AC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMAJ13A-E3/61 from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode designed for robust overvoltage protection of sensitive electronics. It features a 13 V standoff voltage (VWM), 14.4–15.9 V breakdown range (VBR at 1.0 mA), 21.5 V clamping voltage (VC) at 27.9 A peak pulse current, and 600 W peak pulse power (10/1000 µs waveform). It is used to protect MOSFETs, ICs, and sensor signal lines in industrial and telecom power rails.
For engineers reviewing the SMAJ13A-E3/61 datasheet, SMAJ13A-E3/61 pinout, SMAJ13A-E3/61 application, or SMAJ13A-E3/61 equivalent, key selection criteria include its unidirectional polarity, SMB (DO-214AA) package, 1.0 µA max reverse leakage at VWM, 150 °C max junction temperature, and AEC-Q101 qualification availability via HE3 suffix variants.
Technical Context
This TVS diode operates as a clamping device that remains high-impedance below VWM = 13 V and rapidly transitions to low-impedance conduction above VBR ≥ 14.4 V to limit transient energy. Its glass-passivated junction ensures stable breakdown characteristics and fast response time (< 1 ns).
The device delivers 600 W peak pulse power under standardized 10/1000 µs surge conditions with 0.01% duty cycle, and exhibits low incremental surge resistance - critical for minimizing let-through voltage during ESD or lightning-induced transients on DC power inputs and I/O lines.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 13 V - Maximum continuous reverse operating voltage before significant leakage; defines safe DC bias margin. |
| VBR (Breakdown Voltage) | 14.4–15.9 V at 1.0 mA - Confirmed minimum/maximum threshold where avalanche conduction begins reliably. |
| VC (Clamping Voltage) | 21.5 V at IPPM = 27.9 A - Peak voltage seen by protected circuit during 600 W transient; determines stress on downstream components. |
| IPPM (Peak Pulse Current) | 27.9 A - Maximum non-repetitive surge current it can shunt without failure under 10/1000 µs waveform. |
| PPPM (Peak Pulse Power) | 600 W - Surge energy-handling capability per JEDEC-standardized waveform; defines transient immunity level. |
| ID (Reverse Leakage) | 1.0 µA max at VWM - Ensures negligible standby power loss and no interference with low-current sensor or logic circuits. |
| TJmax | 150 °C - Enables operation in high-temperature industrial environments without derating concerns up to ambient 125 °C. |
Pinout & Package
Package: SMB (DO-214AA) - Surface-mount, low-profile plastic case with matte tin-plated leads; meets UL 94 V-0 flammability rating and J-STD-002 solderability requirements. Polarity indicated by cathode band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / transient return path | Connected to ground or low-side reference; completes clamping loop when cathode is tied to protected line. |
| Cathode | Protected line connection / avalanche conduction terminal | Connected to the line being protected (e.g., 12 V rail); conducts surge current to anode during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables reliable suppression of IEC 61000-4-5 Level 3 (1 kV/2 Ω) surges on 12–24 V systems without thermal runaway. |
| Glass passivated junction | Ensures long-term stability of VBR and low parameter drift across temperature and lifetime cycling. |
| MSL Level 1 (260 °C peak reflow) | Supports standard lead-free SMT assembly without moisture sensitivity concerns or pre-bake requirements. |
| Unidirectional polarity with cathode band | Prevents accidental reverse installation and enables precise placement in DC-biased protection paths (e.g., +12 V to GND). |
| AEC-Q101 qualified variants available | HE3/HM3 suffix versions meet automotive-grade reliability for engine control, body electronics, and ADAS power domains. |
Applications
| Industrial PLC I/O Protection | Automotive Body Control Module (BCM) |
|---|---|
|
Use Scenario: Protecting 24 V digital input channels in programmable logic controllers from inductive kickback and field wiring transients. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between input terminal and ground, triggered within < 1 ns to clamp spikes up to ±1 kV. Use Value: Limits voltage seen by optocoupler input or microcontroller GPIO to ≤21.5 V, preventing latch-up or permanent damage during relay coil de-energization. |
Use Scenario: Safeguarding LIN bus transceivers and power supply inputs in door module ECUs exposed to load dump and jump-start events. IC Role / Device Role / Timing Role: Standoff-rated TVS on 12 V rail and LIN data line, absorbing 600 W surges while maintaining < 1 µA leakage at nominal battery voltage. Use Value: Maintains system uptime during ISO 7637-2 Pulse 5a (load dump) by clamping to 21.5 V before upstream LDO or regulator enters overvoltage shutdown. |
| Telecom Power Supply Input | Consumer Sensor Signal Line Protection |
|
Use Scenario: Front-end protection of AC/DC adapter outputs feeding PoE-powered network switches and base stations. IC Role / Device Role / Timing Role: Primary TVS on secondary-side 48 V output, coordinated with MOVs and fuses to handle repetitive lightning-induced surges. Use Value: Withstands 27.9 A peak pulses without degradation, enabling >100,000 surge cycles per MIL-STD-883H Method 3015.8. |
Use Scenario: ESD hardening of analog output lines (e.g., 4–20 mA current loop) from environmental sensors in HVAC or smart home hubs. IC Role / Device Role / Timing Role: Low-capacitance unidirectional TVS placed directly at connector, shunting HBM ±8 kV discharges before signal conditioning op-amps. Use Value: 1.0 µA leakage at 13 V ensures no offset error in precision current-sense amplifiers; 21.5 V clamping preserves ADC input range integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ13A-E3/52 | Same electrical specs, identical SMB package, but optimized for 7″ tape-and-reel delivery (750 pcs/reel) vs. 61's 750 pcs/reel - same footprint and performance. | Designed for high-volume SMT production with standard feeder compatibility; no functional difference from SMAJ13A-E3/61. | Select SMBJ13A-E3/52 for automated pick-and-place lines requiring 7″ reel format; SMAJ13A-E3/61 is functionally identical with alternate reel coding. |
| SMCJ13A-E3/61 | Same VWM/VC/PPPM, but in larger SMC (DO-214AB) package - higher thermal mass, RθJA ≈ 50 °C/W vs. 100 °C/W for SMB. | Better suited for high-ambient-temperature or high-duty-cycle surge environments where SMB thermal limits may be exceeded. | Choose SMCJ13A-E3/61 when board space allows and sustained surge repetition or >85 °C ambient operation is required; SMAJ13A-E3/61 fits tighter layouts. |
Compared with SMBJ13A-E3/52, SMAJ13A-E3/61 offers identical protection performance in the same SMB package but with alternate reel packaging code; versus SMCJ13A-E3/61, SMAJ13A-E3/61 trades thermal robustness for compactness - optimal for space-constrained 12 V rail protection where surge duty cycle is low.
Availability
SMAJ13A-E3/61 is available at Aetrix Electronics and suitable for industrial PLC I/O protection, automotive BCM power inputs, and telecom 48 V supply front-ends requiring stable component supply, RoHS-compliant sourcing, and full traceability.
Supply support for SMAJ13A-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, rectifiers, TVS devices, and power MOSFETs with emphasis on reliability, efficiency, and application-specific optimization.
The SMAJ series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-energy transient suppression in harsh industrial, automotive, and telecom environments where consistent clamping and long-term stability are critical.
FAQ
What is the maximum clamping voltage of the SMAJ13A-E3/61 under surge conditions?
The SMAJ13A-E3/61 has a maximum clamping voltage (VC) of 21.5 V when subjected to its rated peak pulse current of 27.9 A using the 10/1000 µs waveform. This value is measured per JEDEC standards and ensures downstream components see no more than 21.5 V during transient events - a key parameter for validating protection margins in 12 V and 24 V systems. The SMAJ13A-E3/61 maintains this clamping performance across its full operating temperature range.
Is the SMAJ13A-E3/61 suitable for automotive applications?
The SMAJ13A-E3/61 itself is commercial-grade (RoHS-compliant, E3 suffix), but Vishay offers AEC-Q101 qualified equivalents under the HE3 suffix (e.g., SMAJ13AHE3_B). While SMAJ13A-E3/61 meets many automotive electrical stress requirements - including 150 °C TJmax, 600 W surge rating, and MSL Level 1 - formal automotive qualification requires the HE3 variant. For non-safety-critical body electronics prototyping, SMAJ13A-E3/61 is often used, but production automotive designs must specify SMAJ13AHE3_B or equivalent.
How does the SMAJ13A-E3/61 differ from the SMBJ13A-E3/52?
The SMAJ13A-E3/61 and SMBJ13A-E3/52 share identical electrical specifications - same VWM = 13 V, VBR = 14.4–15.9 V, VC = 21.5 V, and PPPM = 600 W - and both use the SMB (DO-214AA) package. The difference lies solely in packaging format: SMAJ13A-E3/61 uses a 7″ reel with 750 units (code "61"), while SMBJ13A-E3/52 uses the same reel size but different internal coding ("52"). They are functionally interchangeable in circuit design and layout. The SMAJ13A-E3/61 is not a different device - it is the same TVS diode with alternate ordering designation.
What is the reverse leakage current specification for the SMAJ13A-E3/61 at its standoff voltage?
The SMAJ13A-E3/61 specifies a maximum reverse leakage current (ID) of 1.0 µA at its standoff voltage (VWM) of 13 V and ambient temperature of 25 °C. This ultra-low leakage ensures minimal power loss and zero impact on high-impedance sensing nodes or battery-backed circuits. At elevated temperatures (e.g., 85 °C), leakage remains well below 10 µA - verified per Vishay's characterization data - making SMAJ13A-E3/61 suitable for always-on industrial monitoring systems.
Can the SMAJ13A-E3/61 be used in bidirectional protection configurations?
No - the SMAJ13A-E3/61 is a unidirectional TVS diode, identifiable by its cathode band marking. Bidirectional operation requires a CA-suffixed part such as SMAJ13CA-E3/61. Using SMAJ13A-E3/61 in a bidirectional signal path (e.g., RS-485, CAN) would result in forward conduction during negative transients, causing malfunction or damage. For symmetric AC or differential line protection, only CA variants are appropriate; SMAJ13A-E3/61 is strictly for DC rail-to-ground clamping where polarity is fixed.
SMAJ13A-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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 13V
- Voltage - Breakdown (Min):
- 14.4V
- Voltage - Clamping (Max) @ Ipp:
- 21.5V
- Current - Peak Pulse (10/1000µs):
- 18.6A
- 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)
SMAJ13A-E3/61 FAQ
1.How can I place an order for SMAJ13A-E3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ13A-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 SMAJ13A-E3/61 reliable?
The price and inventory of SMAJ13A-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 SMAJ13A-E3/61 is usually 5 days.
3.What payment methods are accepted for SMAJ13A-E3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ13A-E3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ13A-E3/61?
SMAJ13A-E3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ13A-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 SMAJ13A-E3/61?
For technical support, including SMAJ13A-E3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ13A-E3/61 requirements.
6.How does Aetrix verify that SMAJ13A-E3/61 is sourced from the original manufacturer or authorized distributors?
All SMAJ13A-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 SMAJ13A-E3/61 meets industry standards.
7.What is the process for return or replacement of SMAJ13A-E3/61?
All SMAJ13A-E3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ13A-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 SMAJ13A-E3/61 part is unused and in its original packaging.
Return procedure for SMAJ13A-E3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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