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Vishay General Semiconductor - Diodes Division SMAJ13-E3/61
- Part No.:
- SMAJ13-E3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ13-E3/61.pdf
- Description:
- TVS DIODE 13VWM 23.8VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,059
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Product details
Overview
SMAJ13-E3/61 from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in DO-214AC (SMA) package, designed for clamping transient overvoltages on power and signal lines. It features 13 V stand-off voltage (VWM), 23.8 V maximum clamping voltage (VC) at 16.8 A peak pulse current, and 400 W peak pulse power rating with 10/1000 µs waveform - suitable for protecting MOSFETs and ICs in industrial power supplies.
For engineers reviewing the SMAJ13-E3/61 datasheet, SMAJ13-E3/61 pinout, SMAJ13-E3/61 application, or SMAJ13-E3/61 equivalent, key selection criteria include its 13 V reverse stand-off rating, low 1.0 µA leakage at VWM, 150 °C junction temperature limit, RoHS-compliant matte tin terminals, and MSL Level 1 moisture sensitivity.
Technical Context
This unidirectional TVS diode operates by avalanche breakdown to clamp voltage transients above its breakdown threshold (14.4–17.6 V at 1 mA test current). Its glass-passivated junction ensures stable performance under repetitive surge conditions, with thermal resistance of 120 °C/W (junction-to-ambient) enabling reliable operation on standard 5.0 × 5.0 mm copper pads.
The device complies with ANSI/IEEE C62.35 for surge protection and meets J-STD-020 MSL Level 1 (peak reflow 260 °C). It supports 40 A non-repetitive forward surge current (8.3 ms half-sine) and exhibits low incremental surge resistance for effective energy diversion during ESD or lightning-induced surges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 13 V - Maximum continuous reverse operating voltage before clamping begins; defines safe working range for protected circuitry. |
| VBR (min/max) | 14.4 V / 17.6 V at 1 mA - Breakdown voltage range confirming reliable avalanche initiation without premature conduction. |
| VC @ IPPM | 23.8 V at 16.8 A - Clamped voltage during 400 W transient; limits stress on downstream components like microcontrollers or gate drivers. |
| IPPM | 16.8 A - Peak pulse current capability with 10/1000 µs waveform; determines survivability against common surge events. |
| ID @ VWM | 1.0 µA - Reverse leakage at stand-off voltage; ensures minimal power loss and signal integrity in standby mode. |
| TJ max. | +150 °C - Maximum junction temperature; allows operation in high-temperature environments such as automotive engine compartments. |
| RθJA | 120 °C/W - Thermal resistance from junction to ambient; guides PCB pad sizing and layout for thermal management. |
Pinout & Package
Package: DO-214AC (SMA), surface-mount, molded plastic case meeting UL 94 V-0 flammability rating. Cathode indicated by band on body; leads are matte tin plated, solderable per J-STD-002 and JESD22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; connected to lower-potential side of protected line. | Enables unidirectional clamping - conducts only when cathode is > anode by ≥ VBR, protecting against positive transients. |
| Cathode | Current exit point in forward bias; marked with band; connected to higher-potential side or ground reference. | Provides low-impedance path to ground during overvoltage, diverting surge current away from sensitive loads. |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 µs) | Handles high-energy transients typical of inductive switching or EFT bursts without degradation. |
| Glass-passivated chip junction | Ensures long-term stability and consistent clamping performance across temperature and lifetime. |
| MSL Level 1 (260 °C peak reflow) | Supports standard lead-free SMT assembly processes without preconditioning or special handling. |
| RoHS-compliant, commercial grade (E3 suffix) | Meets environmental compliance requirements for global electronics manufacturing and end-of-life disposal. |
| Low 1.0 µA leakage at VWM | Minimizes standby power loss and avoids false triggering in low-current sensor or battery-powered circuits. |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
|
Use Scenario: Protection of gate driver ICs and MOSFETs against voltage spikes caused by relay coil de-energization or PWM switching noise. IC Role / Device Role / Timing Role: Unidirectional TVS placed between gate and source to clamp positive-going transients before they exceed MOSFET VGS rating. Use Value: Limits gate-source voltage to ≤23.8 V during 16.8 A surges, preventing gate oxide damage and ensuring reliable FET switching. |
Use Scenario: Safeguarding LIN bus transceivers and microcontroller I/O pins from load dump and jump-start induced transients. IC Role / Device Role / Timing Role: TVS connected between LIN line and chassis ground to shunt surge energy before it reaches the transceiver's input stage. Use Value: Clamps line voltage to 23.8 V within nanoseconds, maintaining signal integrity and avoiding bus lockup during 12 V system faults. |
| Consumer Power Adapters | Telecom DC Power Feeds |
|
Use Scenario: Secondary-side overvoltage suppression on 5–12 V output rails of AC/DC adapters exposed to lightning-induced surges on connected devices. IC Role / Device Role / Timing Role: Placed across output capacitor to clamp transient overshoot during hot-plug or short-circuit recovery events. Use Value: Maintains regulated output below 24 V during 400 W surges, preventing damage to USB-PD controllers or downstream SoCs. |
Use Scenario: Protection of -48 V DC telecom power distribution boards against accidental polarity reversal or lightning coupling on long cable runs. IC Role / Device Role / Timing Role: Used in series with feed line to absorb negative-going transients while allowing normal DC current flow via low forward voltage drop. Use Value: Withstands 40 A single-half-sine surge (8.3 ms), preserving power continuity and avoiding fuse blowing during grid disturbances. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ13A-E3/61 | Lower breakdown range (14.4–15.9 V), tighter VBR tolerance, 21.5 V clamping at 18.6 A. | Better suited for precision-clamp designs where lower VC margin is critical and leakage <1 µA must be maintained at elevated temperatures. | Select SMAJ13A-E3/61 when tighter VBR control and reduced clamping voltage outweigh the 2.2 A lower IPPM. |
| SMCJ13A-E3/61 | Same VWM/VBR but in larger DO-214AB (SMC) package; 1500 W peak power, 122 A IPPM, RθJA = 35 °C/W. | Required for higher-energy surge environments (e.g., outdoor telecom cabinets) where 400 W is insufficient and thermal dissipation is prioritized. | Choose SMCJ13A-E3/61 only if board space permits larger footprint and system-level surge testing exceeds IEC 61000-4-5 Level 4. |
Compared with SMAJ13-E3/61, SMAJ13A-E3/61 offers improved clamping consistency at the cost of slightly reduced surge current capacity, while SMCJ13A-E3/61 trades compactness for significantly higher energy handling - making SMAJ13-E3/61 optimal for space-constrained, medium-risk industrial and automotive applications.
Availability
SMAJ13-E3/61 is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, and consumer power adapters requiring stable component supply, full traceability, and RoHS-compliant sourcing.
Supply support for SMAJ13-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, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SMAJ series was developed for robust, surface-mount transient suppression in space-constrained power and interface circuits across automotive, industrial, and computing markets - balancing clamping performance, thermal resilience, and manufacturability.
FAQ
What is the maximum clamping voltage of SMAJ13-E3/61 under standard test conditions?
The SMAJ13-E3/61 has a maximum clamping voltage (VC) of 23.8 V when subjected to its rated peak pulse current of 16.8 A using the 10/1000 µs waveform. This value is measured at TA = 25 °C on 5.0 × 5.0 mm copper pads and represents the upper voltage limit imposed on protected circuitry during transient events - critical for ensuring compatibility with 24 V logic and power ICs.
Is SMAJ13-E3/61 unidirectional or bidirectional, and how is polarity identified?
SMAJ13-E3/61 is a unidirectional TVS diode, meaning it clamps only positive transients relative to its cathode terminal. Polarity is identified by a visible band on the device body, which marks the cathode end. This band must be oriented toward the higher-potential side (e.g., VIN or signal line) to ensure proper clamping action - incorrect orientation renders the device ineffective against negative-going surges.
Does SMAJ13-E3/61 meet automotive qualification standards?
No, SMAJ13-E3/61 is the commercial-grade variant (E3 suffix) and is not AEC-Q101 qualified. For automotive applications requiring qualification, the HE3-suffix version (e.g., SMAJ13HE3/61) must be selected - it undergoes extended reliability testing including temperature cycling, humidity bias, and surge endurance per AEC-Q101 Rev D.
What is the reverse leakage current specification for SMAJ13-E3/61 at its stand-off voltage?
The SMAJ13-E3/61 specifies a maximum reverse leakage current (ID) of 1.0 µA at its 13 V stand-off voltage (VWM) and TA = 25 °C. This low leakage ensures minimal power drain in always-on systems and avoids interference with high-impedance sensor inputs or battery-backed circuits where quiescent current is tightly constrained.
Can SMAJ13-E3/61 be used in place of SMAJ13A-E3/61 without design changes?
No - SMAJ13-E3/61 and SMAJ13A-E3/61 are not interchangeable without validation. While both share the same VWM and package, SMAJ13A-E3/61 has a tighter breakdown voltage range (14.4–15.9 V vs. 14.4–17.6 V) and lower clamping voltage (21.5 V vs. 23.8 V). Substituting SMAJ13-E3/61 may result in earlier conduction and higher clamping stress in precision-sensitive circuits.
SMAJ13-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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 13V
- Voltage - Breakdown (Min):
- 14.4V
- Voltage - Clamping (Max) @ Ipp:
- 23.8V
- Current - Peak Pulse (10/1000µs):
- 16.8A
- 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)
SMAJ13-E3/61 FAQ
1.How can I place an order for SMAJ13-E3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ13-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 SMAJ13-E3/61 reliable?
The price and inventory of SMAJ13-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 SMAJ13-E3/61 is usually 5 days.
3.What payment methods are accepted for SMAJ13-E3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ13-E3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ13-E3/61?
SMAJ13-E3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ13-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 SMAJ13-E3/61?
For technical support, including SMAJ13-E3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ13-E3/61 requirements.
6.How does Aetrix verify that SMAJ13-E3/61 is sourced from the original manufacturer or authorized distributors?
All SMAJ13-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 SMAJ13-E3/61 meets industry standards.
7.What is the process for return or replacement of SMAJ13-E3/61?
All SMAJ13-E3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ13-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 SMAJ13-E3/61 part is unused and in its original packaging.
Return procedure for SMAJ13-E3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ13-E3/61 Tags
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