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Vishay General Semiconductor - Diodes Division SMBJ13A-E3/52
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- Part No.:
- SMBJ13A-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ13A-E3/52.pdf
- Description:
- TVS DIODE 13VWM 21.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,130
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Product details
Overview
SMBJ13A-E3/52 from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode designed for primary overvoltage protection of DC power rails and signal lines. It features a 13 V stand-off voltage (VWM), 14.4–15.9 V breakdown voltage (VBR) at 1 mA, 21.5 V maximum clamping voltage (VC) at 27.9 A peak pulse current (IPPM), and 600 W peak pulse power capability with a 10/1000 µs waveform - deployed in automotive body control modules to protect CAN transceiver inputs against load dump and inductive switching transients.
For engineers reviewing the SMBJ13A-E3/52 datasheet, SMBJ13A-E3/52 pinout, SMBJ13A-E3/52 application, or SMBJ13A-E3/52 equivalent, key selection criteria include clamping performance under 27.9 A surge, thermal resistance (RθJA = 100 °C/W), unidirectional polarity with cathode band marking, RoHS-compliant matte tin plating, and compatibility with automated SMT placement on SMB (DO-214AA) footprint.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds VBR (14.4–15.9 V), it avalanches to divert transient energy away from downstream ICs. Its low incremental surge resistance ensures minimal voltage overshoot during fast transients (e.g., ISO 7637-2 Pulse 1/2a/5a), while the glass-passivated junction delivers stable, repeatable clamping behavior across temperature (−55 °C to +150 °C).
Designed for PCB-level protection, SMBJ13A-E3/52 mounts on 0.2" × 0.2" copper pads per terminal and meets MSL Level 1 (JEDEC J-STD-020) with 260 °C peak reflow profile. It is not AEC-Q101 qualified (E3 suffix denotes commercial grade only), and its unidirectional configuration requires correct cathode orientation relative to protected rail polarity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 13 V - Maximum continuous reverse operating voltage before leakage exceeds 1 µA; sets upper limit for protected line's nominal DC voltage. |
| VBR (min/max) | 14.4 V / 15.9 V at 1 mA - Confirmed avalanche onset range; ensures reliable triggering above system operating voltage with margin. |
| VC @ IPPM | 21.5 V at 27.9 A - Clamped voltage during 10/1000 µs surge; defines worst-case stress on downstream components. |
| PPPM | 600 W - Peak pulse power handling with 10/1000 µs waveform; supports repetitive surges at ≤0.01% duty cycle. |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance on standard pad layout; determines power derating above 25 °C ambient. |
| IFSM | 100 A - Non-repetitive forward surge rating (8.3 ms half-sine); relevant for accidental forward fault conditions. |
| Package | SMB (DO-214AA) - 2-pin surface-mount outline with 5.59 mm max length, 4.06 mm max width, and 2.20 mm max height. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads, cathode indicated by a visible band on the body. Complies with UL 94 V-0 flammability rating and J-STD-002 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or return path; completes conduction path during reverse-biased transient clamping. |
| Cathode | High-side connection point | Connected to protected line (e.g., 12 V rail); marked by band; carries full surge current into anode during clamping. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables robust protection against high-energy transients like ISO 7637-2 Pulse 5a without thermal runaway on standard PCB pads. |
| 21.5 V clamping voltage at 27.9 A | Limits voltage stress on 16 V-rated CAN transceivers or microcontroller I/O pins during worst-case surge events. |
| Glass-passivated junction | Ensures long-term parameter stability and low leakage drift over temperature and lifetime, critical for automotive infotainment power rails. |
| MSL Level 1 (260 °C peak) | Supports standard lead-free reflow profiles without preconditioning, reducing manufacturing complexity and cost. |
| RoHS-compliant, matte tin plating | Meets JESD 22-B102 solderability and JESD 201 Class 2 whisker resistance requirements for industrial-grade reliability. |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Protection |
|---|---|
|
Use Scenario: Protects 12 V supply input of BCM microcontrollers against load dump (ISO 16750-2) and relay coil flyback. IC Role / Device Role / Timing Role: Shunt-type transient clamp placed between VCC and GND, triggered within <1 ns to limit voltage excursion. Use Value: Maintains 21.5 V clamping under 27.9 A surge, preventing latch-up or gate oxide damage in 3.3 V/5 V logic powered from regulated 12 V rails. |
Use Scenario: Shields 24 V digital input channels of programmable logic controllers from field-wiring induced surges (IEC 61000-4-5). IC Role / Device Role / Timing Role: Primary front-end protection device mounted directly at connector entry point, ahead of optocoupler or Schmitt trigger input stage. Use Value: Withstands 600 W pulses while holding clamped voltage below 24 V system tolerance limits, eliminating need for secondary Zener or RC filtering. |
| Consumer Appliance Motor Drive Board | Telecom Power Supply EMI Filter Stage |
|
Use Scenario: Guards MCU GPIOs and gate drivers connected to brushed DC motor H-bridges against commutation spikes. IC Role / Device Role / Timing Role: Localized protection element placed adjacent to motor driver IC, minimizing trace inductance in clamping path. Use Value: Fast response time and low dynamic impedance ensure sub-22 V clamping even during rapid 100 ns edge transients from brush arcing. |
Use Scenario: Installed across secondary-side DC output of telecom AC/DC adapters to suppress differential-mode surges entering DC distribution bus. IC Role / Device Role / Timing Role: Secondary-side TVS in multi-stage protection scheme, complementing primary MOV and Y-capacitor filtering. Use Value: 13 V VWM allows operation with 12 V nominal outputs while providing 21.5 V clamping to protect downstream DC-DC converters and PMICs. |
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-E3/52 | Bidirectional variant; symmetric VBR (14.4–15.9 V) in both directions; no polarity marking. | Required for AC-coupled or floating signal lines (e.g., RS-485, USB D+/D−) where voltage reversal occurs. | Select SMBJ13CA-E3/52 only if bidirectional clamping is needed; SMBJ13A-E3/52 is mandatory for DC rail protection with defined polarity. |
| SMAJ13A-E3/52 | Lower PPPM (400 W vs. 600 W); same VWM/VBR/VC specs; SMA (DO-214AC) package with smaller footprint (4.5 × 2.7 mm). | Suitable for space-constrained consumer boards but derates faster under repeated surges due to lower thermal mass. | Choose SMAJ13A-E3/52 only when board area is critical and surge duty cycle remains <0.005%; otherwise, SMBJ13A-E3/52 provides superior thermal margin. |
Compared with SMBJ13CA-E3/52 and SMAJ13A-E3/52, SMBJ13A-E3/52 delivers higher surge endurance (600 W), unidirectional polarity assurance for DC systems, and larger SMB package thermal capacity - making it the preferred choice for automotive and industrial 12 V rail protection where reliability under repetitive transients is non-negotiable.
Availability
SMBJ13A-E3/52 is available at Aetrix Electronics and suitable for automotive body control modules, industrial PLC digital inputs, consumer appliance motor drive boards, and telecom power supply EMI filter stages requiring stable component supply and consistent surge performance across production batches.
Supply support for SMBJ13A-E3/52 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, MOSFETs, and protection devices with emphasis on reliability, precision, and automotive qualification.
The SMBJ series is engineered for high-energy transient suppression in harsh environments - targeting 12 V/24 V automotive, industrial, and telecom power and signal interfaces where clamping accuracy and surge repeatability are critical.
FAQ
What is the maximum clamping voltage of SMBJ13A-E3/52 under a 10/1000 µs surge?
The SMBJ13A-E3/52 has 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 at the device terminals under specified test conditions (TA = 25 °C, mounted on 0.2" × 0.2" copper pads) and represents the upper bound of voltage seen by protected circuitry during worst-case transient events. The SMBJ13A-E3/52 maintains this clamping performance consistently across its operational temperature range.
Is SMBJ13A-E3/52 AEC-Q101 qualified?
No, SMBJ13A-E3/52 is not AEC-Q101 qualified. The "E3" suffix indicates RoHS-compliant commercial-grade construction. For automotive-qualified versions, Vishay offers the SMBJ13AHE3_X series (e.g., SMBJ13AHE3_B), which carry the HE3 suffix and are explicitly tested and certified to AEC-Q101. Engineers designing for automotive applications requiring qualification must specify the HE3 variant - the SMBJ13A-E3/52 is intended for industrial, consumer, and telecom use where AEC-Q101 is not mandated.
How does the SMBJ13A-E3/52 differ from the SMBJ13CA-E3/52?
The SMBJ13A-E3/52 is unidirectional, with a cathode band marking and asymmetric conduction: it clamps only in reverse bias and conducts forward current up to 100 A (IFSM). The SMBJ13CA-E3/52 is bidirectional, with no polarity marking and identical clamping behavior in both directions - essential for AC or floating signal lines. Both share identical VWM (13 V), VBR (14.4–15.9 V), and VC (21.5 V), but their circuit integration and layout requirements differ fundamentally. The SMBJ13A-E3/52 must be oriented correctly on PCBs; the SMBJ13CA-E3/52 does not.
What is the thermal resistance of SMBJ13A-E3/52, and how does it affect power derating?
The SMBJ13A-E3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on the recommended 0.2" × 0.2" copper pads per terminal. This means each watt of sustained power dissipation raises the junction temperature by 100 °C above ambient. Since its maximum junction temperature is 150 °C, the device must be derated linearly above 25 °C ambient - for example, at 75 °C ambient, maximum allowable continuous power drops to 1.25 W (5.0 W × [1 − (75−25)/125]). The SMBJ13A-E3/52 is rated for 5.0 W at TA = 50 °C.
Can SMBJ13A-E3/52 be used to protect a 3.3 V logic line?
No, SMBJ13A-E3/52 is not suitable for protecting 3.3 V logic lines. Its 13 V stand-off voltage (VWM) is far above the 3.3 V rail, meaning it will not activate until voltage exceeds ~14.4 V - well beyond the absolute maximum rating of most 3.3 V ICs. Using SMBJ13A-E3/52 on such a line leaves the IC fully exposed to damaging transients. For 3.3 V circuits, lower-voltage TVS devices like SMBJ3.3A or specialized low-capacitance ESD arrays (e.g., USB-ESD protection ICs) are required. The SMBJ13A-E3/52 is intended for 12 V systems.
SMBJ13A-E3/52 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-E3/52 FAQ
1.How can I place an order for SMBJ13A-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ13A-E3/52 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-E3/52 reliable?
The price and inventory of SMBJ13A-E3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ13A-E3/52 is usually 5 days.
3.What payment methods are accepted for SMBJ13A-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ13A-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ13A-E3/52?
SMBJ13A-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ13A-E3/52 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-E3/52?
For technical support, including SMBJ13A-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ13A-E3/52 requirements.
6.How does Aetrix verify that SMBJ13A-E3/52 is sourced from the original manufacturer or authorized distributors?
All SMBJ13A-E3/52 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-E3/52 meets industry standards.
7.What is the process for return or replacement of SMBJ13A-E3/52?
All SMBJ13A-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ13A-E3/52, 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-E3/52 part is unused and in its original packaging.
Return procedure for SMBJ13A-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ13A-E3/52 Tags
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