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Vishay General Semiconductor - Diodes Division SMAJ13AHE3/5A
- Part No.:
- SMAJ13AHE3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ13AHE3/5A.pdf
- Description:
- TVS DIODE 13VWM 21.5VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,178
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Product details
Overview
SMAJ13AHE3/5A 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 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 - deployed on power rails and signal lines in automotive ECUs and industrial sensor interfaces.
For engineers reviewing the SMAJ13AHE3/5A datasheet, SMAJ13AHE3/5A pinout, SMAJ13AHE3/5A application, or SMAJ13AHE3/5A equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance (RθJA = 120 °C/W), clamping performance, and direct replacement guidance for board-level surge protection design.
Technical Context
This TVS diode operates as a unidirectional avalanche clamp, leveraging glass-passivated junction technology for stable breakdown behavior and low incremental surge resistance. Its 400 W peak pulse power rating (10/1000 μs) applies up to 78 V; above that, derated to 300 W - confirmed by Vishay's Fig. 1 and Table 1.
The device exhibits 0.084 %/°C temperature coefficient of VBR, ensuring predictable voltage drift across -55 °C to +150 °C operating range. Polarity is marked by cathode band; it is not bidirectional and does not support symmetrical clamping.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 13 V - maximum continuous reverse voltage before significant leakage; defines safe operating margin below clamping threshold |
| VBR (Breakdown Voltage) | 14.4–15.9 V at 1 mA - guaranteed avalanche initiation range; ensures reliable turn-on during transients |
| VC (Clamping Voltage) | ≤21.5 V at 18.6 A (10/1000 μs) - peak voltage seen by protected circuit during worst-case surge |
| IPPM (Peak Pulse Current) | 18.6 A - maximum non-repetitive surge current the device sustains without failure under standard waveform |
| PPPM (Peak Pulse Power) | 400 W - energy-handling capability for 10/1000 μs transients; derates to 300 W above 78 V |
| RθJA (Junction-to-Ambient) | 120 °C/W - thermal resistance with minimum pad layout; informs PCB copper area requirements for thermal management |
| ID (Max Reverse Leakage) | 1.0 μA at 13 V - negligible standby current; avoids loading low-power circuits during normal operation |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile case with matte tin-plated leads compliant with J-STD-002 and JESD 22-B102. Molding compound meets UL 94 V-0. Cathode indicated by band; anode is unmarked end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line (e.g., VCC or signal); conducts surge current to ground when VLINE exceeds VBR |
| Anode (unbanded end) | Reference node | Typically tied to system ground; completes clamping path during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, body electronics, and ADAS sensors per stress test requirements |
| 400 W peak pulse power (10/1000 μs) | Withstands IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) on 12 V systems when properly laid out |
| Glass-passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity exposure |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without preconditioning or special handling |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (<1 ns response), critical for protecting MOSFET gates and IC inputs |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
|
Use Scenario: Protecting 12 V supply inputs of engine control units (ECUs) against load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between battery rail and local regulator input. Use Value: Limits transient voltage to ≤21.5 V, preventing damage to downstream LDOs and microcontrollers rated for 28 V absolute max. |
Use Scenario: Shielding analog output lines (e.g., 4–20 mA current loop) of pressure sensors in factory automation systems. IC Role / Device Role / Timing Role: Series-connected TVS on signal line referenced to system ground, absorbing ESD and inductive kickback. Use Value: Clamps 8 kV contact ESD (IEC 61000-4-2) to <22 V, preserving ADC reference integrity and avoiding latch-up in signal conditioning ICs. |
| Consumer Device USB Port Protection | Telecom DC Power Input Protection |
|
Use Scenario: Safeguarding VBUS line of USB 2.0 ports in set-top boxes against hot-plug transients and nearby ESD events. IC Role / Device Role / Timing Role: Unidirectional TVS between VBUS and GND, upstream of USB switch or controller. Use Value: Responds in <1 ns to clamp 15 kV air discharge to <22 V, meeting USB-IF compliance while maintaining <1 μA leakage at 5 V. |
Use Scenario: Guarding -48 V DC telecom power inputs against lightning-induced surges per GR-1089-CORE. IC Role / Device Role / Timing Role: Paired unidirectional TVS (anode to -48 V, cathode to return) on primary power entry. Use Value: Handles 10/1000 μs 100 A surge with ≤21.5 V clamping, enabling use of lower-voltage-rated input capacitors and DC-DC controllers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ13A-E3/5A | No AEC-Q101 qualification; commercial-grade only; identical VWM, VBR, and VC specs | Not approved for automotive production; suitable for consumer or industrial prototypes where qualification is not mandated | Select when cost sensitivity outweighs automotive qualification requirement and full traceability is not needed |
| SMAJ13AHE3/61 | Same AEC-Q101 qualification and electrical specs; differs only in packaging - 7" tape/reel (1800 pcs) vs. 13" reel (7500 pcs) | No functional difference; choice driven by production volume, feeder compatibility, and inventory turnover needs | Prefer for medium-batch SMT runs using 7" feeders; avoid if high-volume automated lines require 13" reels |
Compared with SMAJ13AHE3/5A, the SMAJ13A-E3/5A lacks automotive qualification but offers identical clamping performance for non-automotive use, while SMAJ13AHE3/61 provides identical functionality in smaller reel format - enabling flexibility in procurement scale without compromising surge immunity or thermal behavior.
Availability
SMAJ13AHE3/5A is available at Aetrix Electronics and suitable for automotive ECU designs, industrial sensor modules, consumer USB power interfaces, and telecom DC input stages requiring stable component supply with full AEC-Q101 traceability and RoHS compliance.
Supply support for SMAJ13AHE3/5A 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, rectifiers, and protection devices with emphasis on reliability, automotive qualification, and high-volume manufacturability.
The SMAJ series was engineered specifically for board-level transient suppression in harsh environments - delivering standardized 400 W surge capability, AEC-Q101 validation, and DO-214AC compatibility for automated assembly in automotive and industrial systems.
FAQ
What is the clamping voltage of SMAJ13AHE3/5A at its rated peak pulse current?
The SMAJ13AHE3/5A clamps to a maximum of 21.5 V at its specified peak pulse current of 18.6 A under the standard 10/1000 μs waveform. This value is measured per Vishay's test conditions in Document Number 88390 and reflects worst-case voltage imposed on the protected circuit during surge events - critical for verifying margin against downstream component absolute maximum ratings.
Is SMAJ13AHE3/5A bidirectional or unidirectional?
SMAJ13AHE3/5A is a unidirectional TVS diode, indicated by the "A" suffix and cathode band marking. It conducts only in reverse bias during overvoltage events and must be oriented with the banded end toward the protected line. Bidirectional variants (e.g., SMAJ13CA) are separate part numbers and not interchangeable with SMAJ13AHE3/5A.
Does SMAJ13AHE3/5A meet AEC-Q101 requirements?
Yes, SMAJ13AHE3/5A is explicitly AEC-Q101 qualified, as confirmed in Vishay's datasheet revision 09-Jan-2024 (Document Number 88390), footnote (1) under Thermal Characteristics and Ordering Information tables. The "HE3" suffix denotes RoHS-compliant and AEC-Q101 qualified construction, validated for automotive underhood and chassis applications.
What is the maximum operating temperature for SMAJ13AHE3/5A?
The SMAJ13AHE3/5A has a maximum junction temperature (TJ) of +150 °C and operates across -55 °C to +150 °C. This rating enables deployment in under-hood automotive environments and industrial enclosures with elevated ambient temperatures - provided PCB thermal design maintains junction temperature within limits using the specified RθJA = 120 °C/W.
How does the "/5A" suffix affect the SMAJ13AHE3/5A specification?
"/5A" denotes the preferred packaging code: 13-inch plastic tape-and-reel with 7500 units per reel. It does not alter electrical, thermal, or qualification specifications. All SMAJ13AHE3/X variants share identical AEC-Q101 qualification, VWM, VBR, VC, and power ratings - differing only in reel size and quantity for manufacturing logistics.
SMAJ13AHE3/5A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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)
SMAJ13AHE3/5A FAQ
1.How can I place an order for SMAJ13AHE3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ13AHE3/5A 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 SMAJ13AHE3/5A reliable?
The price and inventory of SMAJ13AHE3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ13AHE3/5A is usually 5 days.
3.What payment methods are accepted for SMAJ13AHE3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ13AHE3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ13AHE3/5A?
SMAJ13AHE3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ13AHE3/5A 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 SMAJ13AHE3/5A?
For technical support, including SMAJ13AHE3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ13AHE3/5A requirements.
6.How does Aetrix verify that SMAJ13AHE3/5A is sourced from the original manufacturer or authorized distributors?
All SMAJ13AHE3/5A 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 SMAJ13AHE3/5A meets industry standards.
7.What is the process for return or replacement of SMAJ13AHE3/5A?
All SMAJ13AHE3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ13AHE3/5A, 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 SMAJ13AHE3/5A part is unused and in its original packaging.
Return procedure for SMAJ13AHE3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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