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Vishay General Semiconductor - Diodes Division SMB8J13CAHE3_A/I
- Part No.:
- SMB8J13CAHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB8J13CAHE3_A/I.pdf
- Description:
- TVS DIODE 13VWM 21.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMB8J13CAHE3_A/I 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 standoff voltage (VWM), 14.4–15.9 V breakdown voltage (VBR), 21.5 V clamping voltage (VC) at 37.2 A peak pulse current (IPPM), and 800 W peak pulse power (PPPM) with 10/1000 µs waveform - used to protect automotive sensor interfaces, CAN transceivers, and industrial I/O ports against ESD and load dump.
For engineers reviewing the SMB8J13CAHE3_A/I datasheet, SMB8J13CAHE3_A/I pinout, SMB8J13CAHE3_A/I application, or SMB8J13CAHE3_A/I equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, low leakage (<1.0 µA at VWM), thermal resistance (RθJL = 20 °C/W), and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This device operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (ID ≤ 1.0 µA at 13 V), but triggers into low-impedance conduction when transient voltage exceeds VBR (14.4–15.9 V @ 1 mA), limiting downstream voltage to ≤21.5 V at 37.2 A. Its glass-passivated junction ensures stable breakdown and fast response (<1 ns).
Rated for -55 °C to +150 °C operation and qualified to AEC-Q101, SMB8J13CAHE3_A/I supports automotive-grade reliability with MSL Level 1 moisture sensitivity and matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 13 V - maximum continuous reverse working voltage before leakage rises significantly; defines safe operating margin below clamping threshold. |
| VBR (Breakdown Voltage) | 14.4–15.9 V @ 1 mA - precise voltage range where device transitions from high- to low-impedance state; ensures predictable turn-on during transients. |
| VC (Clamping Voltage) | 21.5 V @ IPPM = 37.2 A - maximum voltage seen by protected circuit during 10/1000 µs surge; critical for IC-level overvoltage margining. |
| PPPM (Peak Pulse Power) | 800 W - energy-handling capacity for standardized 10/1000 µs waveform; enables robust protection against ISO 7637-2 pulse 1/2a/5a in automotive systems. |
| RθJL (Junction-to-Lead Thermal Resistance) | 20 °C/W - low thermal resistance enables efficient heat transfer to PCB copper pads; supports sustained surge duty without thermal runaway. |
| TJ max. | +150 °C - maximum junction temperature rating; allows operation in under-hood automotive environments and industrial enclosures. |
| AEC-Q101 Qualified | Yes - validated for automotive electronic modules per stress test requirements including HTOL, TC, UHAST, and ESD; required for ECUs and ADAS sensors. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking (unlike unidirectional variants which feature cathode band). Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); recommended pad layout: 5.59 mm × 2.18 mm minimum per terminal.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional transient shunt path | Either terminal serves as input/output - no polarity dependency; enables single-component protection on AC-coupled or differential lines (e.g., RS-485, CAN). |
| Case / Body | Thermal and mechanical interface | Plastic molding meets UL 94 V-0; transfers heat to PCB copper via soldered terminals; no internal ground or shield connection. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables symmetric surge suppression on AC, differential, or floating signal lines without polarity concerns - essential for CAN FD, LIN, and sensor bridges. |
| AEC-Q101 qualification | Validates reliability for automotive applications including engine control, body electronics, and infotainment; eliminates need for additional qualification testing. |
| Low clamping ratio (VC/VBR ≈ 1.4) | Minimizes overvoltage stress on downstream ICs - e.g., 21.5 V clamp at 15.9 V VBR provides tight margin for 12 V rail systems. |
| MSL Level 1, 260 °C reflow compatible | Supports standard lead-free SMT assembly without pre-baking; reduces manufacturing complexity and cost in high-volume automotive PCB assembly. |
| Glass-passivated junction | Ensures stable VBR over lifetime and temperature; prevents parameter drift due to humidity or bias stress - critical for 15-year automotive service life. |
Applications
| Automotive CAN Bus Protection | Industrial Sensor Signal Line Protection |
|---|---|
|
Use Scenario: Protecting CAN_H/CAN_L lines in vehicle ECUs against ISO 7637-2 pulse 1 (inductive switch-off) and pulse 5a (load dump). IC Role / Device Role / Timing Role: Shunt TVS diode placed directly at connector entry point to divert surge energy before reaching CAN transceiver. Use Value: Clamps transients to ≤21.5 V while handling 37.2 A peak current - maintains CAN physical layer integrity and prevents transceiver latch-up or damage. |
Use Scenario: Safeguarding analog outputs (e.g., 4–20 mA, 0–10 V) of pressure/temperature sensors in factory automation systems exposed to motor switching noise. IC Role / Device Role / Timing Role: Bidirectional voltage clamp across signal and return lines to suppress common-mode and differential surges. Use Value: Low 1.0 µA leakage at 13 V avoids loading precision sensor circuits; 20 °C/W RθJL enables reliable operation on standard FR4 with minimal copper area. |
| Consumer USB Port ESD Protection | Telecom DSL Line Surge Suppression |
|
Use Scenario: Secondary-level ESD protection on USB 2.0 D+/D− lines in set-top boxes and smart displays, complementing integrated IC-level protection. IC Role / Device Role / Timing Role: Fast-response shunt element that activates within nanoseconds to clamp ±15 kV contact ESD (IEC 61000-4-2) to safe levels. Use Value: 21.5 V clamping ensures downstream USB PHY remains below absolute maximum ratings; bidirectional symmetry simplifies layout vs. dual unidirectional devices. |
Use Scenario: Primary surge protection on twisted-pair DSL lines entering residential gateways, subjected to lightning-induced surges up to 10/1000 µs. IC Role / Device Role / Timing Role: High-power shunt TVS mounted at line interface to absorb >800 W surge energy before reaching line driver/receiver ICs. Use Value: 800 W PPPM rating and 37.2 A IPPM meet GR-1089-CORE Level 3 telecom surge requirements; DO-214AA footprint allows compact, cost-effective board design. |
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 | Unqualified commercial grade (no AEC-Q101); same VWM/VBR/VC/PPPM specs; RoHS-compliant but halogen-containing. | Lacks automotive qualification - suitable for industrial or consumer designs where AEC-Q101 is not mandated. | Select when cost sensitivity outweighs automotive reliability requirements and lifecycle traceability is not needed. |
| SMCJ13CAHE3_A/I | Same AEC-Q101 qualification and electrical specs, but in larger SMC (DO-214AB) package with higher 1500 W PPPM rating and lower RθJA (35 °C/W vs. 72 °C/W). | Better thermal performance and surge margin; requires larger PCB area and may not fit space-constrained automotive modules. | Choose when higher surge endurance (>800 W) or improved thermal dissipation is required, and board space permits SMC footprint. |
Compared with SMBJ13CA-E3/52, SMB8J13CAHE3_A/I adds AEC-Q101 validation and halogen-free construction for automotive use; versus SMCJ13CAHE3_A/I, it trades 700 W extra power handling for 40% smaller PCB footprint and tighter layout integration in compact ECUs.
Availability
SMB8J13CAHE3_A/I is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor interface development, and telecom line card prototyping requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant sourcing.
Supply support for SMB8J13CAHE3_A/I 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, power density, and application-specific qualification.
The SMB8JxxCA family targets automotive and industrial transient protection, engineered for AEC-Q101 compliance, high surge robustness in compact SMB packages, and seamless integration into automated SMT lines.
FAQ
What is the clamping voltage of SMB8J13CAHE3_A/I at its rated peak pulse current?
The SMB8J13CAHE3_A/I has a maximum clamping voltage (VC) of 21.5 V when subjected to its rated peak pulse current (IPPM) of 37.2 A using the standard 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and confirmed in Vishay's datasheet revision 09-Jan-2024, ensuring predictable overvoltage limiting for protected circuits downstream of SMB8J13CAHE3_A/I.
Is SMB8J13CAHE3_A/I suitable for automotive applications requiring AEC-Q101 qualification?
Yes, SMB8J13CAHE3_A/I is explicitly AEC-Q101 qualified, as indicated by the "HE3" suffix and confirmed in the Vishay datasheet (Document Number: 88422). It undergoes full stress testing including high-temperature operating life, temperature cycling, and unbiased highly accelerated stress testing - making SMB8J13CAHE3_A/I appropriate for engine control units, ADAS sensors, and body electronics where automotive-grade reliability is mandatory.
How does the bidirectional configuration of SMB8J13CAHE3_A/I affect its PCB layout compared to unidirectional TVS diodes?
The bidirectional configuration of SMB8J13CAHE3_A/I eliminates polarity marking - there is no cathode band, so orientation during placement is irrelevant. This simplifies PCB layout and automated assembly versus unidirectional variants like SMB10J13A, especially on differential buses (e.g., CAN, RS-485) where symmetric protection is required. SMB8J13CAHE3_A/I's DO-214AA footprint remains identical, but routing avoids orientation-dependent constraints.
What is the maximum reverse leakage current specified for SMB8J13CAHE3_A/I at its standoff voltage?
SMB8J13CAHE3_A/I specifies a maximum reverse leakage current (ID) of 1.0 µA at its standoff voltage (VWM) of 13 V, measured at TA = 25 °C. This low leakage ensures minimal impact on high-impedance sensor inputs or battery-powered circuits, preserving signal integrity and system power budget - a key design advantage confirmed in the bidirectional electrical characteristics table of the Vishay datasheet.
Can SMB8J13CAHE3_A/I be used in place of SMBJ13CA for automotive designs?
SMB8J13CAHE3_A/I is not a direct drop-in replacement for SMBJ13CA in all cases: while both share identical VWM (13 V), VBR (14.4–15.9 V), and VC (21.5 V), SMB8J13CAHE3_A/I carries AEC-Q101 qualification and halogen-free construction (per Vishay's material categorization), whereas SMBJ13CA is commercial-grade. For automotive designs requiring certified reliability, SMB8J13CAHE3_A/I is the appropriate choice - confirming SMB8J13CAHE3_A/I meets OEM Tier-1 validation requirements.
SMB8J13CAHE3_A/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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_A/I FAQ
1.How can I place an order for SMB8J13CAHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB8J13CAHE3_A/I 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_A/I reliable?
The price and inventory of SMB8J13CAHE3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB8J13CAHE3_A/I is usually 5 days.
3.What payment methods are accepted for SMB8J13CAHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB8J13CAHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB8J13CAHE3_A/I?
SMB8J13CAHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB8J13CAHE3_A/I 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_A/I?
For technical support, including SMB8J13CAHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB8J13CAHE3_A/I requirements.
6.How does Aetrix verify that SMB8J13CAHE3_A/I is sourced from the original manufacturer or authorized distributors?
All SMB8J13CAHE3_A/I 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_A/I meets industry standards.
7.What is the process for return or replacement of SMB8J13CAHE3_A/I?
All SMB8J13CAHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMB8J13CAHE3_A/I, 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_A/I part is unused and in its original packaging.
Return procedure for SMB8J13CAHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB8J13CAHE3_A/I Tags
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