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Vishay General Semiconductor - Diodes Division SMAJ13AHE3_A/I
- Part No.:
- SMAJ13AHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ13AHE3_A/I.pdf
- Description:
- TVS DIODE 13VWM 21.5VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,725
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Product details
Overview
SMAJ13AHE3_A/I 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 13 V standoff voltage (VWM), 14.4–15.9 V breakdown voltage (VBR) at 1 mA, and clamps transients to ≤21.5 V at 18.6 A peak pulse current (IPPM) under 10/1000 μs waveform - ideal for safeguarding MOSFETs, ICs, and sensor signal lines against inductive switching surges.
For engineers reviewing the SMAJ13AHE3_A/I datasheet, SMAJ13AHE3_A/I pinout, SMAJ13AHE3_A/I application, or SMAJ13AHE3_A/I equivalent, this AEC-Q101 qualified, RoHS-compliant TVS offers verified 400 W peak pulse power (≤78 V), low incremental surge resistance, and fast response time - critical for automotive, industrial, and telecom system-level ESD and surge protection design.
Technical Context
This unidirectional TVS operates with cathode-band polarity marking and leverages glass-passivated junction technology for stable clamping performance across -55 °C to +150 °C junction temperature range. Its thermal resistance (RθJA = 120 °C/W) and low leakage (<1.0 μA at VWM) support reliable operation on standard PCB copper pads without active cooling.
The device delivers consistent clamping behavior under repetitive 0.01% duty cycle surges and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. Its 10/1000 μs waveform rating is defined with 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pad layout per Vishay's test conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 13 V - maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 14.4 V / 15.9 V at 1 mA - ensures reliable breakdown initiation within tight tolerance band |
| VC @ IPPM | ≤21.5 V at 18.6 A - limits downstream voltage stress during 10/1000 μs surge events |
| PPPM | 400 W - peak pulse power handling capability up to 78 V; derates to 300 W above 78 V |
| IFSM | 40 A - withstands 8.3 ms half-sine surge without failure (unidirectional only) |
| TJ max | +150 °C - enables use in under-hood automotive and high-ambient industrial environments |
| RθJA | 120 °C/W - defines thermal rise per watt dissipated on standard PCB layout |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Polarity indicated by cathode band on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias | Connected to circuit ground or lower-potential node during surge suppression |
| Cathode | Current exit terminal in forward bias; marked with band | Connected to protected line (e.g., signal or power rail) to clamp positive transients |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated reliability for automotive applications including engine control, body electronics, and ADAS sensors |
| 400 W peak pulse power (10/1000 μs) | Handles high-energy transients common in 12 V/24 V vehicle systems and industrial motor drives |
| Glass passivated chip junction | Ensures long-term stability and low parameter drift under thermal cycling and humidity stress |
| MSL Level 1 (260 °C peak) | Supports standard lead-free reflow assembly without preconditioning or special handling |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients (e.g., ISO 7637-2 Pulse 1/2a/5a) |
Applications
| Automotive Power Line Protection | Industrial Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Protecting LIN bus transceivers and microcontroller I/O pins from load dump and alternator ripple in 12 V vehicle networks. IC Role / Device Role / Timing Role: Unidirectional TVS placed between signal line and ground to shunt positive transients while blocking DC bias. Use Value: Clamps 13 V nominal lines to ≤21.5 V during 400 W surges, preserving signal integrity and preventing latch-up in 3.3 V/5 V logic interfaces. |
Use Scenario: Shielding analog outputs of pressure/temperature sensors in PLC modules from EFT and surge coupling via shared 24 V supply rails. IC Role / Device Role / Timing Role: Standoff-rated TVS on sensor output path to absorb sub-microsecond transients without affecting DC accuracy or bandwidth. Use Value: 1.0 μA max leakage at 13 V ensures minimal offset error in precision 4–20 mA loops; fast response avoids signal distortion. |
| Telecom Interface Port Protection | Consumer Device USB/Power Rail Clamp |
|
Use Scenario: Safeguarding Ethernet PHY interface components (e.g., magnetics, PHY ICs) against lightning-induced surges on PoE-powered equipment. IC Role / Device Role / Timing Role: Primary front-end TVS on data pair lines, coordinated with secondary GDT or polymer PTC for staged protection. Use Value: 21.5 V clamping voltage prevents damage to 25 V-rated PHY inputs while maintaining signal eye diagram integrity up to 100 Mbps. |
Use Scenario: Suppressing ESD and capacitive coupling spikes on 5 V USB VBUS and data lines in portable audio/video devices. IC Role / Device Role / Timing Role: Low-capacitance TVS (typ. <100 pF) placed directly at connector to divert ±15 kV contact discharge per IEC 61000-4-2. Use Value: 13 V standoff allows full 5 V operation; 400 W rating handles multiple ESD events without degradation in consumer-grade handhelds. |
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 | Commercial-grade (non-AEC-Q101), same electrical specs and SMA package | Lacks automotive qualification; suitable for industrial/commercial designs without automotive lifecycle requirements | Select when AEC-Q101 is not mandated and cost optimization is prioritized |
| SMAJ13CAHE3_A/I | Bidirectional variant; identical VWM, VBR, and clamping but symmetric conduction | Required for AC-coupled or dual-polarity signal lines (e.g., RS-485, CAN) where negative transients dominate | Choose for bidirectional protection needs; not interchangeable without circuit review |
Compared with SMAJ13AHE3_A/I, the SMAJ13A-E3/61 offers identical surge performance at lower qualification cost, while SMAJ13CAHE3_A/I provides symmetrical clamping essential for differential or AC signals - neither is pin-compatible without verifying polarity and layout constraints.
Availability
SMAJ13AHE3_A/I is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, telecom port protection, and consumer USB power rail applications requiring stable component supply, long-term lifecycle assurance, and AEC-Q101 compliance.
Supply support for SMAJ13AHE3_A/I 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 validation.
The SMAJ series targets high-reliability transient suppression in harsh environments, engineered specifically for automotive, industrial, and telecom systems demanding AEC-Q101 qualification and repeatable 400 W surge performance.
FAQ
What is the clamping voltage of SMAJ13AHE3_A/I at its rated peak pulse current?
The SMAJ13AHE3_A/I clamps to a maximum of 21.5 V at its specified peak pulse current of 18.6 A under the 10/1000 μs waveform condition. This value is measured with the device mounted on 0.2" × 0.2" copper pads and reflects worst-case voltage seen by downstream circuitry during standardized surge events - a key parameter for ensuring compatibility with 24 V tolerant ICs and MOSFETs in the protected system.
Is SMAJ13AHE3_A/I suitable for automotive applications?
Yes, SMAJ13AHE3_A/I is AEC-Q101 qualified and explicitly designated for automotive use per Vishay's ordering code convention (HE3 suffix). It supports under-hood and cabin applications including body control modules, infotainment power supplies, and ADAS sensor interfaces, meeting stringent requirements for temperature cycling, humidity resistance, and surge endurance required by automotive OEMs.
What does the "HE3" suffix indicate in SMAJ13AHE3_A/I?
The "HE3" suffix in SMAJ13AHE3_A/I denotes RoHS-compliant construction with AEC-Q101 qualification, distinguishing it from commercial-grade variants (E3) or halogen-free versions (HM3). The "A/I" further specifies packaging: 13" diameter tape-and-reel with 7500 units per reel - critical for automated SMT placement in high-volume automotive and industrial manufacturing.
How does SMAJ13AHE3_A/I differ from bidirectional SMAJ13CAHE3_A/I?
SMAJ13AHE3_A/I is unidirectional with cathode-band polarity, suppressing only positive transients relative to ground, whereas SMAJ13CAHE3_A/I is bidirectional and protects against both polarities. Their VWM (13 V), VBR, and clamping voltages match, but SMAJ13AHE3_A/I cannot replace SMAJ13CAHE3_A/I in AC-coupled or differential lines without redesigning grounding and layout - they are functionally distinct, not drop-in substitutes.
What is the maximum operating junction temperature for SMAJ13AHE3_A/I?
The maximum operating junction temperature for SMAJ13AHE3_A/I is +150 °C, as confirmed in Vishay's thermal characteristics table. This rating enables reliable operation in high-ambient environments such as automotive engine compartments or industrial motor drive enclosures, provided PCB thermal design maintains junction-to-ambient temperature rise within limits defined by RθJA = 120 °C/W and power dissipation.
SMAJ13AHE3_A/I 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMAJ13AHE3_A/I FAQ
1.How can I place an order for SMAJ13AHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ13AHE3_A/I 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 SMAJ13AHE3_A/I reliable?
The price and inventory of SMAJ13AHE3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ13AHE3_A/I is usually 5 days.
3.What payment methods are accepted for SMAJ13AHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ13AHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ13AHE3_A/I?
SMAJ13AHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ13AHE3_A/I 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 SMAJ13AHE3_A/I?
For technical support, including SMAJ13AHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ13AHE3_A/I requirements.
6.How does Aetrix verify that SMAJ13AHE3_A/I is sourced from the original manufacturer or authorized distributors?
All SMAJ13AHE3_A/I 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 SMAJ13AHE3_A/I meets industry standards.
7.What is the process for return or replacement of SMAJ13AHE3_A/I?
All SMAJ13AHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ13AHE3_A/I, 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 SMAJ13AHE3_A/I part is unused and in its original packaging.
Return procedure for SMAJ13AHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ13AHE3_A/I Tags
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