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Vishay General Semiconductor - Diodes Division SMBJ13A-E3/5B
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- Part No.:
- SMBJ13A-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ13A-E3/5B.pdf
- Description:
- TVS DIODE 13VWM 21.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:10,185
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Product details
Overview
SMBJ13A-E3/5B from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for robust overvoltage protection of DC power rails and signal lines. It features a 13 V standoff voltage (VWM), 14.4–15.9 V breakdown voltage (VBR) at 1 mA, 21.5 V clamping voltage (VC) at 27.9 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - deployed in industrial motor drives to protect MOSFET gate drivers from inductive switching transients.
For engineers reviewing the SMBJ13A-E3/5B datasheet, SMBJ13A-E3/5B pinout, SMBJ13A-E3/5B application, or SMBJ13A-E3/5B equivalent, this page delivers verified electrical parameters, thermal derating behavior, clamping performance under surge conditions, RoHS-compliant commercial-grade qualification, and direct alternative part comparisons for ESD and lightning surge protection design.
Technical Context
This TVS diode operates as a unidirectional avalanche clamp, triggered when reverse voltage exceeds its specified VBR range (14.4–15.9 V). Its low incremental surge resistance ensures minimal voltage overshoot during fast transients, while the glass-passivated junction enables stable, repeatable clamping across temperature (−55 °C to +150 °C).
The device complies with IEC 61000-4-2 (ESD), IEC 61000-4-4 (EFT), and IEC 61000-4-5 (surge) immunity standards when applied with appropriate PCB layout. With MSL Level 1 rating and 260 °C lead-free reflow compatibility, it supports high-reliability automated SMT assembly without moisture sensitivity concerns.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 13 V - maximum continuous reverse operating voltage before clamping begins; defines safe DC rail margin for 12 V systems. |
| VBR @ IT = 1 mA | 14.4–15.9 V - guaranteed avalanche initiation window; ensures predictable turn-on across production lots and temperature. |
| VC @ IPPM = 27.9 A | 21.5 V - clamped voltage during 10/1000 µs surge; limits stress on downstream ICs like microcontrollers or gate drivers. |
| PPPM | 600 W - peak pulse power handling capability; sustains repetitive 0.01% duty cycle surges without degradation. |
| IPPM | 27.9 A - maximum non-repetitive surge current; derived from 10/1000 µs waveform per Fig. 1 in datasheet 88392. |
| RθJA | 100 °C/W - junction-to-ambient thermal resistance on standard 0.2" × 0.2" copper pads; informs board-level thermal design. |
| Junction Temp Range | −55 °C to +150 °C - operational and storage range; validated for automotive under-hood and industrial control environments. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Cathode indicated by band marking; anode is unmarked end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts surge current to ground during overvoltage events. |
| Anode (unbanded end) | Reference node | Typically tied to system ground or low-impedance return path; completes clamping loop. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables protection against IEC 61000-4-5 Level 3 (1 kV/2 Ω) surges on 12 V DC bus without derating. |
| 21.5 V clamping voltage at 27.9 A | Keeps protected MOSFET gate-source voltage below absolute maximum rating during load dump events. |
| MSL Level 1, 260 °C peak reflow | Eliminates pre-baking requirement and supports standard lead-free SMT processes without reliability risk. |
| Glass passivated junction | Ensures long-term stability of VBR and leakage (<1 µA at VWM) across humidity and thermal cycling. |
| RoHS-compliant, halogen-free option available | E3 suffix confirms compliance with EU RoHS Directive 2011/65/EU and JEDEC J-STD-20 MSL requirements. |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
|
Use Scenario: Protection of 12 V supply rail feeding H-bridge gate drivers in BLDC motor controllers subject to inductive kickback. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between VDD and GND, responding within <1 ps to limit transient excursions. Use Value: Prevents latch-up or permanent damage to gate driver ICs (e.g., DRV8305) during MOSFET turn-off spikes up to 60 V. |
Use Scenario: Surge suppression on LIN bus lines and sensor inputs (e.g., ambient temperature, door position) in BCM assemblies. IC Role / Device Role / Timing Role: Standoff-clamp element on low-speed communication lines, absorbing ESD (±25 kV contact) and load dump energy. Use Value: Maintains signal integrity and prevents false triggering of microcontroller wake-up interrupts during vehicle battery disconnection events. |
| Telecom Power Supplies | Consumer Appliance Control Boards |
|
Use Scenario: Input-stage protection for 12 V/24 V telecom DC-DC converters exposed to lightning-induced surges on PoE or external power feeds. IC Role / Device Role / Timing Role: Primary front-end clamp on secondary-side output rails, coordinated with upstream MOVs and fuses. Use Value: Limits let-through voltage to <22 V during 10/1000 µs 600 W surges, preserving downstream PMICs and interface ICs. |
Use Scenario: Overvoltage guard on microcontroller I/O pins connected to push-button interfaces and relay coils in washing machine control boards. IC Role / Device Role / Timing Role: Localized transient absorber mounted adjacent to sensitive GPIOs, minimizing trace inductance. Use Value: Eliminates need for external series resistors or RC snubbers while meeting IEC 61000-4-2 Level 4 (8 kV contact) immunity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ13CA-E3/5B | Bidirectional variant with same VWM (13 V), VBR (14.4–15.9 V), and VC (21.5 V); symmetrical clamping in both polarities. | Required for AC-coupled or dual-polarity signal lines (e.g., RS-485, CAN FD differential pairs); not suitable for DC rail protection where polarity is fixed. | Select SMBJ13CA-E3/5B only when bidirectional clamping is mandated by signal architecture - otherwise SMBJ13A-E3/5B offers lower leakage and simpler biasing. |
| SMCJ13A-E3/57T | Same electrical specs but in larger SMC (DO-214AB) package; 1500 W PPPM, higher IPPM (123 A), RθJA = 40 °C/W. | Used where higher surge endurance or improved thermal dissipation is needed (e.g., outdoor telecom enclosures); requires larger PCB footprint. | Choose SMCJ13A-E3/57T if system-level surge testing exceeds 600 W or board layout allows 2.5× larger pad area; otherwise SMBJ13A-E3/5B optimizes space and cost. |
Compared with SMBJ13CA-E3/5B, SMBJ13A-E3/5B provides superior DC blocking and lower reverse leakage for unidirectional rails; compared with SMCJ13A-E3/57T, it trades surge headroom for compactness and compatibility with dense SMT layouts - making SMBJ13A-E3/5B the optimal choice for space-constrained 12 V industrial and automotive modules.
Availability
SMBJ13A-E3/5B is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, and telecom power supplies requiring stable component supply with full traceability and no obsolescence risk through 2028.
Supply support for SMBJ13A-E3/5B 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 optoelectronics with emphasis on reliability, precision, and high-volume manufacturability.
The SMBJ series was engineered specifically for surface-mount transient suppression in harsh environments - balancing clamping speed, power density, and process compatibility for automotive, industrial, and communications equipment.
FAQ
What is the maximum clamping voltage of SMBJ13A-E3/5B under a 10/1000 µs surge?
The SMBJ13A-E3/5B exhibits a maximum clamping voltage (VC) of 21.5 V when subjected to its rated peak pulse current of 27.9 A using the standardized 10/1000 µs waveform. This value is measured per Figure 1 and Table on page 2 of Vishay document 88392 and represents the upper bound of voltage seen by protected circuitry during worst-case transient events - critical for ensuring downstream components remain within their absolute maximum ratings.
Is SMBJ13A-E3/5B RoHS-compliant and lead-free assembly compatible?
Yes, SMBJ13A-E3/5B carries the "E3" suffix, confirming full compliance with the EU RoHS Directive 2011/65/EU and suitability for lead-free reflow soldering up to 260 °C peak temperature. It meets J-STD-020 MSL Level 1 requirements with no floor life limitation, eliminating the need for moisture-sensitive handling or baking prior to assembly - a key advantage for high-mix manufacturing of SMBJ13A-E3/5B into industrial control boards.
How does SMBJ13A-E3/5B differ from SMBJ13CA-E3/5B?
SMBJ13A-E3/5B is unidirectional, with cathode marking and asymmetric conduction (conducts only in reverse bias), whereas SMBJ13CA-E3/5B is bidirectional and symmetric in both polarities. Their VWM, VBR, and VC values are identical, but SMBJ13A-E3/5B offers lower reverse leakage (<1 µA at 13 V) and is intended for DC rail protection, while SMBJ13CA-E3/5B suits AC or differential signal lines like CAN or RS-485 where polarity reversal occurs.
What is the thermal resistance of SMBJ13A-E3/5B, and how does it affect layout?
The SMBJ13A-E3/5B has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, as defined in Vishay's test condition. This means PCB layout must allocate sufficient copper area and avoid thermal isolation - reducing pad size or adding thermal vias directly beneath the SMBJ13A-E3/5B terminals improves heat dissipation and extends surge endurance during repetitive events.
Can SMBJ13A-E3/5B be used in automotive applications?
SMBJ13A-E3/5B is qualified for commercial-grade operation (−55 °C to +150 °C), but for AEC-Q101 automotive qualification, the variant SMBJ13AHE3_B/I must be selected. That version shares identical electrical specs and SMB package but adds stress-tested reliability validation for under-hood use. Therefore, SMBJ13A-E3/5B is suitable for non-safety-critical automotive subsystems (e.g., infotainment power rails) only when customer qualification is performed - not for ASIL-B/C systems without further validation.
SMBJ13A-E3/5B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- 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):
- 27.9A
- Power - Peak Pulse:
- 600W
- 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-214AA (SMBJ)
SMBJ13A-E3/5B FAQ
1.How can I place an order for SMBJ13A-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ13A-E3/5B 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 SMBJ13A-E3/5B reliable?
The price and inventory of SMBJ13A-E3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ13A-E3/5B is usually 5 days.
3.What payment methods are accepted for SMBJ13A-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ13A-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ13A-E3/5B?
SMBJ13A-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ13A-E3/5B 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 SMBJ13A-E3/5B?
For technical support, including SMBJ13A-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ13A-E3/5B requirements.
6.How does Aetrix verify that SMBJ13A-E3/5B is sourced from the original manufacturer or authorized distributors?
All SMBJ13A-E3/5B 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 SMBJ13A-E3/5B meets industry standards.
7.What is the process for return or replacement of SMBJ13A-E3/5B?
All SMBJ13A-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ13A-E3/5B, 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 SMBJ13A-E3/5B part is unused and in its original packaging.
Return procedure for SMBJ13A-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ13A-E3/5B Tags
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