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Vishay General Semiconductor - Diodes Division SMB8J13CA-E3/5B
- Part No.:
- SMB8J13CA-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB8J13CA-E3/5B.pdf
- Description:
- TVS DIODE 13VWM 21.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,214
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Product details
Overview
SMB8J13CA-E3/5B 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 (VC) at 37.2 A peak pulse current (IPPM), and 800 W peak pulse power (PPPM) with 10/1000 µs waveform - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the SMB8J13CA-E3/5B datasheet, SMB8J13CA-E3/5B pinout, SMB8J13CA-E3/5B application, or SMB8J13CA-E3/5B equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, low leakage (<1.0 µA at VWM), thermal resistance (RθJA = 72 °C/W), and compatibility with automated SMT placement on standard PCB pad layouts.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector, responding within <1 ps to transients induced by inductive switching or ESD events. Its glass-passivated junction ensures stable breakdown behavior and low incremental surge resistance, while the bidirectional configuration enables symmetric suppression of positive and negative polarity surges without external polarity management.
The device is rated for -55 °C to +150 °C operating junction temperature and meets MSL Level 1 per J-STD-020 (260 °C peak reflow). It is AEC-Q101 qualified and RoHS-compliant (E3 suffix), with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 13 V - maximum continuous reverse working voltage before clamping begins; defines safe operating margin for 12 V nominal systems. |
| VBR min / max | 14.4 V / 15.9 V at 1 mA - guaranteed breakdown threshold range; ensures consistent turn-on across production lots. |
| VC @ IPPM | 21.5 V at 37.2 A - clamping voltage under full 800 W surge; limits downstream IC stress during worst-case transients. |
| PPPM | 800 W (10/1000 µs) - peak surge energy handling capacity; supports robust protection in automotive load-dump and ISO 7637-2 environments. |
| ID @ VWM | <1.0 µA - ultra-low reverse leakage at stand-off voltage; preserves signal integrity and minimizes standby power loss. |
| RθJA | 72 °C/W - thermal resistance junction-to-ambient; informs board-level thermal design when mounted on 5.0 mm × 5.0 mm copper pads. |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC specification. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional - no polarity marking; symmetrical two-terminal construction with cathode band omitted per bidirectional design.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient current path | Either terminal serves as input/output; bidirectional conduction enables single-device protection of AC-coupled or differential lines. |
| Case (exposed metal slug) | Thermal conduction path | Not electrically connected; provides mechanical anchoring and heat dissipation to PCB copper pads (min. 5.0 mm × 5.0 mm per terminal). |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable, repeatable breakdown voltage and long-term reliability under repeated surge stress. |
| Low-profile SMB package | Enables high-density layout and compatibility with standard pick-and-place equipment (MSL Level 1, 260 °C peak). |
| AEC-Q101 qualification | Validates suitability for automotive applications including engine control units, ADAS sensors, and body electronics. |
| UL 94 V-0 molding compound | Meets flammability safety requirements for enclosed industrial and automotive enclosures. |
| Matte tin-plated leads | Guarantees solderability and whisker resistance per JESD 201 Class 2, supporting lead-free reflow processes. |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ESD in vehicle ECUs. IC Role / Device Role: Bidirectional shunt clamp absorbing transient energy before it reaches sensitive interface ICs. Use Value: Maintains signal fidelity under ISO 16750-2 pulses up to 800 W while meeting AEC-Q101 lifetime requirements. |
Use Scenario: Safeguarding PLC digital input modules and RS-485 transceivers against field-induced surges in factory automation. IC Role / Device Role: Primary front-end surge limiter on unshielded field wiring exposed to lightning-induced coupling. Use Value: Clamps 37.2 A surges to ≤21.5 V, preventing latch-up or damage to 3.3 V/5 V logic-level receivers. |
| Consumer Power Adapter Input | Telecom Line Card Protection |
|
Use Scenario: Secondary-side overvoltage suppression on DC output rails of wall adapters and USB PD chargers. IC Role / Device Role: Fast-response clamp limiting output overshoot during regulator fault or capacitor failure. Use Value: Sub-1 ps response and 1.0 µA leakage preserve efficiency and prevent false triggering in low-power standby modes. |
Use Scenario: Protecting Ethernet PHYs and DSL line drivers from induced surges on outdoor telecom drops. IC Role / Device Role: First-stage protection element placed before series impedance and secondary TVS stages. Use Value: 800 W rating and 21.5 V clamping enable coordination with downstream GDTs or polymer PTCs in multi-stage architectures. |
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 | Same SMB package and 13 V VWM, but rated for 600 W PPPM (vs. 800 W); lower IPPM (24.7 A vs. 37.2 A). | Less suitable for high-energy automotive load-dump events; adequate for ESD and lower-energy inductive spikes. | Select SMBJ13CA-E3/5B only if system-level surge testing confirms 600 W sufficiency and cost optimization is prioritized. |
| SMCJ13CA-E3/5B | Same VWM and VC, but in larger SMC (DO-214AB) package; rated for 1500 W PPPM and 69.4 A IPPM. | Requires larger PCB footprint and higher thermal mass; preferred where sustained surge duty cycles or higher energy margins are required. | Choose SMCJ13CA-E3/5B when board space allows and system validation demands >800 W headroom or extended thermal endurance. |
Compared with SMBJ13CA-E3/5B and SMCJ13CA-E3/5B, SMB8J13CA-E3/5B delivers optimal balance of high surge capacity (800 W), compact SMB footprint, and AEC-Q101 qualification - making it the preferred choice for space-constrained automotive and industrial designs requiring verified reliability.
Availability
SMB8J13CA-E3/5B is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial I/O protection, and telecom line card surge mitigation requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SMB8J13CA-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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and power efficiency.
The SMB8JxxCA series belongs to Vishay's TRANSZORB® TVS portfolio, engineered specifically for high-power-density, AEC-Q101-compliant transient suppression in harsh automotive and industrial environments.
FAQ
What is the clamping voltage of SMB8J13CA-E3/5B under maximum surge conditions?
The SMB8J13CA-E3/5B exhibits a maximum clamping voltage (VC) of 21.5 V when subjected to its rated peak pulse current of 37.2 A (10/1000 µs waveform). This value is measured per ANSI/IEEE C62.35 standards and guarantees predictable voltage limiting during transient events, protecting downstream 13 V-rated circuits without overstress.
Is SMB8J13CA-E3/5B suitable for automotive applications?
Yes, SMB8J13CA-E3/5B is AEC-Q101 qualified and explicitly designated for automotive use with ordering code suffix HE3 or HM3 variants. The E3/5B variant is RoHS-compliant and shares the same electrical and thermal performance; it is widely deployed in engine control units, ADAS camera modules, and body electronics for ISO 7637-2 and ISO 16750-2 compliance.
What is the thermal resistance of SMB8J13CA-E3/5B, and how does it affect PCB layout?
SMB8J13CA-E3/5B has a typical junction-to-ambient thermal resistance (RθJA) of 72 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. To maintain safe junction temperatures under repeated surges, designers must allocate sufficient copper area and avoid thermal bottlenecks - reducing pad size below spec increases RθJA and risks thermal runaway during high-duty-cycle events.
How does SMB8J13CA-E3/5B differ from unidirectional SMB10J13A-E3/5B?
SMB8J13CA-E3/5B is bidirectional with symmetrical clamping for AC or differential signals, while SMB10J13A-E3/5B is unidirectional and requires correct polarity orientation. SMB8J13CA-E3/5B offers 800 W PPPM and 37.2 A IPPM; SMB10J13A-E3/5B delivers 1000 W PPPM and 46.5 A IPPM but lacks reverse-polarity surge capability - making SMB8J13CA-E3/5B essential for applications like CAN bus or audio lines.
What packaging format is used for SMB8J13CA-E3/5B, and what does the "5B" suffix indicate?
SMB8J13CA-E3/5B ships in 13" diameter plastic tape and reel format, with "5B" denoting the preferred package code for that delivery mode and base quantity of 3200 units per reel. The "E3" suffix confirms RoHS-compliance and commercial-grade qualification, while the absence of "H" means it is not AEC-Q101 certified - though the underlying SMB8J13CA die is fully qualified per AEC-Q101 when ordered as HE3/HM3 variants.
SMB8J13CA-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:
- -
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMB8J13CA-E3/5B FAQ
1.How can I place an order for SMB8J13CA-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB8J13CA-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 SMB8J13CA-E3/5B reliable?
The price and inventory of SMB8J13CA-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 SMB8J13CA-E3/5B is usually 5 days.
3.What payment methods are accepted for SMB8J13CA-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB8J13CA-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB8J13CA-E3/5B?
SMB8J13CA-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB8J13CA-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 SMB8J13CA-E3/5B?
For technical support, including SMB8J13CA-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB8J13CA-E3/5B requirements.
6.How does Aetrix verify that SMB8J13CA-E3/5B is sourced from the original manufacturer or authorized distributors?
All SMB8J13CA-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 SMB8J13CA-E3/5B meets industry standards.
7.What is the process for return or replacement of SMB8J13CA-E3/5B?
All SMB8J13CA-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMB8J13CA-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 SMB8J13CA-E3/5B part is unused and in its original packaging.
Return procedure for SMB8J13CA-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB8J13CA-E3/5B Tags
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