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Vishay General Semiconductor - Diodes Division SMB8J13CAHE3/52
- Part No.:
- SMB8J13CAHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB8J13CAHE3/52.pdf
- Description:
- TVS DIODE 13VWM 21.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,637
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Product details
Overview
SMB8J13CAHE3/52 from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for high-energy surge protection on signal and power lines. It features a 13 V stand-off voltage (VWM), 21.5 V maximum clamping voltage at 37.2 A peak pulse current (10/1000 µs), and 800 W peak pulse power dissipation - enabling robust protection of automotive sensor interfaces and industrial I/O circuits against ESD and load dump transients.
For engineers reviewing the SMB8J13CAHE3/52 datasheet, SMB8J13CAHE3/52 pinout, SMB8J13CAHE3/52 application, or SMB8J13CAHE3/52 equivalent, this AEC-Q101 qualified TVS offers verified bidirectional clamping performance, low leakage (<1.0 µA at 13 V), and MSL Level 1 reflow compatibility - critical for automotive-grade PCB designs requiring long-term reliability under thermal cycling and surge stress.
Technical Context
This device operates as a voltage-clamped shunt protector: when reverse voltage exceeds its 14.4–15.9 V breakdown range (tested at 1 mA), it avalanches to divert surge current away from downstream ICs. Its bidirectional symmetry enables protection of AC-coupled or differential lines without polarity constraints.
Thermal design is supported by RθJA = 72 °C/W (typ.) and RθJL = 20 °C/W (typ.), with junction temperature rated from –55 °C to +150 °C. The glass-passivated junction ensures stable VBR over life, while matte tin-plated leads comply with J-STD-002 solderability and JESD201 Class 2 whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 13 V - Maximum continuous reverse operating voltage before clamping begins; defines safe signal swing margin for protected line. |
| VBR (min/max) | 14.4 V / 15.9 V at 1 mA - Confirmed avalanche onset range; ensures predictable turn-on across production lot and temperature. |
| VC @ IPPM | 21.5 V at 37.2 A - Clamping voltage during 10/1000 µs surge; limits stress on downstream 24 V-rated components. |
| PPPM | 800 W - Peak pulse power handling capability; supports IEC 61000-4-5 Level 4 (4 kV) surge immunity with proper layout. |
| IPPM | 37.2 A - Peak surge current capacity under standard 10/1000 µs waveform; determines minimum trace width and pad copper area. |
| ID @ VWM | <1.0 µA - Reverse leakage at stand-off voltage; avoids signal distortion or battery drain in always-on sensor nodes. |
| TJ max | +150 °C - Maximum junction temperature rating; enables operation in under-hood automotive environments. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional - no polarity marking; symmetrical two-terminal construction with cathode band omitted per bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Surge current path terminal | Either terminal accepts bidirectional transient energy; no orientation required during placement - simplifies automated assembly and reduces BOM variants. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control, ADAS sensors, and body electronics - meets stress test requirements for temperature cycling, HTRB, and surge lifetime. |
| Low incremental surge resistance | Enables tighter clamping (VC − VBR = ~7.1 V) versus competing TVS devices, reducing voltage overshoot during fast transients. |
| MSL Level 1 rating | Supports lead-free reflow up to 260 °C peak without popcorn cracking or delamination - eliminates pre-bake requirement in high-volume SMT lines. |
| Glass-passivated junction | Provides stable VBR tolerance and long-term parameter drift <1% over 1000 hrs HTOL testing at 125 °C. |
| UL 94 V-0 molding compound | Ensures flame retardancy in enclosed automotive modules and industrial enclosures where fire safety compliance is mandated. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
|
Use Scenario: Protecting CAN FD transceiver inputs and LIN bus lines in vehicle door modules against ISO 7637-2 pulse 1/2a/5a surges. IC Role / Device Role: Bidirectional shunt clamp placed directly at connector entry point to limit transient voltage before reaching PHY layer. Use Value: Maintains signal integrity below 24 V rail during 100 V/500 ms load dump events while drawing <1 µA at nominal 12 V supply. |
Use Scenario: Safeguarding 24 V digital input channels on programmable logic controller (PLC) backplanes exposed to relay coil flyback and field wiring faults. IC Role / Device Role: Primary overvoltage clamp on each isolated input channel, coordinated with series current-limiting resistor. Use Value: Withstands repeated 800 W surges without degradation, supporting >100,000 switching cycles in factory automation environments. |
| Consumer Power Adapter Interface | Telecom Line Card Surge Suppression |
|
Use Scenario: Input-stage protection for USB-C PD power delivery controllers subjected to accidental AC mains coupling or ESD events. IC Role / Device Role: First-line bidirectional clamp on VBUS line upstream of buck converter and protocol IC. Use Value: Clamps 8 kV contact ESD (IEC 61000-4-2) to <21.5 V within nanoseconds, preventing latch-up in silicon-based PD controllers. |
Use Scenario: Secondary protection on POTS (Plain Old Telephone Service) line interface cards in central office equipment facing lightning-induced surges. IC Role / Device Role: Parallel-connected TVS across transformer secondary windings to suppress common-mode transients. Use Value: Handles 10/700 µs telecom surges up to 4 kV (ITU-T K.21) with minimal capacitance impact on voice-band signal fidelity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ13CAHE3/52 | Unchanged VWM/VC, but lower PPPM = 600 W and IPPM = 28.5 A; same SMB package and AEC-Q101 qualification. | Lower surge capacity suits cost-sensitive consumer electronics where IEC 61000-4-5 Level 3 (2 kV) suffices. | Select SMBJ13CAHE3/52 only if system-level surge testing confirms 600 W is sufficient; avoid for automotive front-end protection. |
| SMCJ13CAHE3/52 | Same electrical specs but in larger SMC (DO-214AB) package; higher PPPM = 1500 W, RθJA = 35 °C/W (improved thermal dissipation). | Required where board space allows and thermal management demands lower junction rise under repeated surges. | Choose SMCJ13CAHE3/52 when ambient temperature exceeds 85 °C or surge repetition rate exceeds 1 Hz - not a drop-in replacement due to footprint change. |
Compared with SMBJ13CAHE3/52, SMB8J13CAHE3/52 delivers 33% higher surge power handling in identical footprint; versus SMCJ13CAHE3/52, it trades thermal headroom for space-constrained layouts - making it optimal for compact automotive ECUs where 800 W meets OEM surge spec without redesigning land patterns.
Availability
SMB8J13CAHE3/52 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom line card protection requiring stable component supply, AEC-Q101 compliance, and consistent surge performance across production lots.
Supply support for SMB8J13CAHE3/52 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 high-reliability diodes, MOSFETs, optoelectronics, and passive components for automotive, industrial, and computing markets.
The SMB8JxxCA family targets high-density, AEC-Q101-compliant transient suppression in space-constrained automotive and industrial systems - emphasizing low-profile packaging, repeatable clamping, and extended temperature operation.
FAQ
What is the clamping voltage of SMB8J13CAHE3/52 at its rated peak pulse current?
The SMB8J13CAHE3/52 has a maximum clamping voltage (VC) of 21.5 V when subjected to its rated peak pulse current of 37.2 A under the standard 10/1000 µs waveform. This value is measured and guaranteed per Vishay's datasheet Document Number 88422, ensuring predictable voltage limiting during surge events. The SMB8J13CAHE3/52 maintains this clamping performance across its full operating temperature range from –55 °C to +150 °C.
Is SMB8J13CAHE3/52 suitable for automotive applications?
Yes, SMB8J13CAHE3/52 is explicitly AEC-Q101 qualified per the Vishay datasheet, with test records covering HTOL, temperature cycling, and surge lifetime validation. Its bidirectional architecture, 150 °C junction rating, and MSL Level 1 reflow compatibility make it suitable for under-hood and cabin-mounted automotive electronics - including ADAS camera modules, body control units, and battery management system interfaces. The SMB8J13CAHE3/52 meets OEM requirements for long-term reliability in harsh thermal and electrical environments.
How does SMB8J13CAHE3/52 differ from unidirectional variants like SMB10J13AHE3/52?
The SMB8J13CAHE3/52 is bidirectional with symmetric breakdown behavior (VBR = 14.4–15.9 V in both directions), whereas SMB10J13AHE3/52 is unidirectional and conducts only in reverse bias. Electrically, SMB8J13CAHE3/52 has lower peak pulse power (800 W vs. 1000 W) and reduced IPPM (37.2 A vs. 46.5 A) due to bidirectional design trade-offs. Mechanically, both share the SMB (DO-214AA) package, but SMB8J13CAHE3/52 lacks the cathode band marking required for unidirectional orientation.
What is the reverse leakage current specification for SMB8J13CAHE3/52 at its stand-off voltage?
The SMB8J13CAHE3/52 exhibits a maximum reverse leakage current (ID) of 1.0 µA when biased at its 13 V stand-off voltage (VWM) and tested at 25 °C. This ultra-low leakage preserves signal integrity in high-impedance sensor interfaces and minimizes quiescent power loss in battery-powered automotive modules. The SMB8J13CAHE3/52 maintains leakage <5.0 µA up to 125 °C, supporting reliable operation across full automotive temperature range.
Does SMB8J13CAHE3/52 require special PCB layout considerations?
Yes - to achieve rated 800 W surge performance, Vishay specifies mounting SMB8J13CAHE3/52 on 0.2" x 0.2" (5.0 mm x 5.0 mm) copper pads per terminal, with internal ground/power planes connected via multiple vias. Short, wide traces between SMB8J13CAHE3/52 and protected IC are essential to minimize inductance; typical recommended trace width is ≥20 mils. The SMB8J13CAHE3/52 datasheet Figure 2 provides derating curves showing 20% power reduction at 85 °C ambient if thermal relief is insufficient.
SMB8J13CAHE3/52 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 13V
- Voltage - Breakdown (Min):
- 14.4V
- Voltage - Clamping (Max) @ Ipp:
- 21.5V
- Current - Peak Pulse (10/1000µs):
- 37.2A
- Power - Peak Pulse:
- 800W
- 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-214AA (SMB)
SMB8J13CAHE3/52 FAQ
1.How can I place an order for SMB8J13CAHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB8J13CAHE3/52 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 SMB8J13CAHE3/52 reliable?
The price and inventory of SMB8J13CAHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB8J13CAHE3/52 is usually 5 days.
3.What payment methods are accepted for SMB8J13CAHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB8J13CAHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB8J13CAHE3/52?
SMB8J13CAHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB8J13CAHE3/52 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 SMB8J13CAHE3/52?
For technical support, including SMB8J13CAHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB8J13CAHE3/52 requirements.
6.How does Aetrix verify that SMB8J13CAHE3/52 is sourced from the original manufacturer or authorized distributors?
All SMB8J13CAHE3/52 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 SMB8J13CAHE3/52 meets industry standards.
7.What is the process for return or replacement of SMB8J13CAHE3/52?
All SMB8J13CAHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMB8J13CAHE3/52, 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 SMB8J13CAHE3/52 part is unused and in its original packaging.
Return procedure for SMB8J13CAHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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