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Vishay General Semiconductor - Diodes Division SMB8J13CAHM3/I
- Part No.:
- SMB8J13CAHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB8J13CAHM3/I.pdf
- Description:
- TVS DIODE 13VWM 21.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,169
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Product details
Overview
SMB8J13CAHM3/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 stand-off voltage (VWM), 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 - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the SMB8J13CAHM3/I datasheet, SMB8J13CAHM3/I pinout, SMB8J13CAHM3/I application, or SMB8J13CAHM3/I equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, 150 °C junction temperature rating, low incremental surge resistance, and halogen-free RoHS-compliant construction per JESD201 Class 2 whisker test.
Technical Context
This TVS diode operates as a voltage-clamped crowbar device during transients, leveraging a glass-passivated silicon junction to achieve sub-nanosecond response time and stable breakdown behavior. Its bidirectional architecture enables symmetric clamping across both polarities without external polarity management.
The device is rated for 1.0 µA maximum reverse leakage at 13 V stand-off, supports 1000 V ESD immunity per IEC 61000-4-2 (indirectly implied by AEC-Q101 stress levels), and maintains thermal stability via 20 °C/W junction-to-lead thermal resistance - critical for sustained surge handling in compact PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 13 V - maximum continuous reverse operating voltage before clamping initiates |
| VC @ IPPM | 21.5 V at 37.2 A - clamped voltage seen by protected circuit during full-rated 10/1000 µs surge |
| PPPM | 800 W - peak transient power dissipation capability under standardized surge waveform |
| TJ max. | +150 °C - maximum junction temperature enabling operation in under-hood automotive environments |
| Polarity | Bidirectional - provides symmetrical overvoltage protection without polarity sensitivity |
| Qualification | AEC-Q101 qualified - validated for automotive electronic systems per stress test requirements |
| Package | SMB (DO-214AA) - surface-mount outline with 5.59 mm × 4.06 mm footprint and 2.20 mm height |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads solderable per J-STD-002 and JESD22-B102; no polarity marking for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Anode) | Transient conduction path (bidirectional) | Both terminals function identically; no functional distinction - symmetric clamping between pins |
| Anode (Cathode) | Transient conduction path (bidirectional) | Identical electrical role to opposite terminal; enables placement without orientation constraints |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD stress per JEDEC standards |
| Halogen-free & RoHS-compliant | Meets environmental compliance requirements for modern automotive and industrial supply chains (HM3 suffix) |
| Low profile SMB package | Enables automated SMT placement and fits high-density layouts with 2.2 mm max height |
| 800 W peak pulse power | Protects against ISO 7637-2 Pulse 1/2a/3a and IEC 61000-4-5 Combination Wave surges in 24 V systems |
| 1.0 µA max reverse leakage @ VWM | Minimizes standby power loss and avoids false triggering in low-current sensor bias networks |
Applications
| Automotive Sensor Interface | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and inductive switching transients in vehicle ECUs. IC Role / Device Role / Timing Role: Standoff-clamp TVS placed directly at connector entry point to shunt surge energy before reaching signal conditioning ICs. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V microcontrollers and ADC front-ends during 12 V/24 V system transients. | Use Scenario: Safeguarding digital input modules in programmable logic controllers exposed to field wiring surges from motor contactors or solenoid coils. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 24 V DC input channels, coordinated with series impedance for current limiting. Use Value: Enables >100,000 surge cycles without degradation while maintaining <13 V steady-state bias integrity. |
| Telecom Line Card Protection | Consumer Appliance Motor Control |
Use Scenario: Shielding Ethernet PHY interface circuits and PoE-powered subsystems from lightning-induced surges on RJ45 ports. IC Role / Device Role / Timing Role: Secondary-level TVS after gas discharge tube (GDT) primary protection, providing fast-response clamping for residual transients. Use Value: Limits induced voltage to <22 V during 10/1000 µs events, preserving IEEE 802.3af/at compliance margins. | Use Scenario: Guarding MCU GPIOs and gate drivers in smart home appliances (e.g., washing machine control boards) against brush-commutator noise and relay bounce. IC Role / Device Role / Timing Role: Localized clamping element adjacent to MOSFET driver ICs and optocoupler inputs. Use Value: Eliminates need for external RC snubbers while sustaining 150 °C ambient operation near heat-generating triac/motor stages. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMB8J13CAHE3/I | RoHS-compliant but not halogen-free; same electrical specs and AEC-Q101 qualification | Acceptable where halogen-free requirement is waived (e.g., non-automotive industrial) | Select when cost optimization is prioritized over halogen-free mandate |
| SMAJ13CA | Lower PPPM (400 W), larger SMA package (DO-214AC), identical VWM/VC ratings | Suitable only for lower-energy transients; requires larger PCB area | Choose only if legacy layout constraints prevent SMB footprint adoption |
Compared with SMB8J13CAHM3/I, SMB8J13CAHE3/I offers identical surge performance with reduced material compliance, while SMAJ13CA trades 50 % lower power handling and +30 % board area for broader distributor availability - making SMB8J13CAHM3/I optimal for space-constrained, high-reliability automotive designs.
Availability
SMB8J13CAHM3/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O protection, telecom line card surge hardening, and consumer appliance motor control requiring stable component supply across extended production lifecycles.
Supply support for SMB8J13CAHM3/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, TVS devices, and power MOSFETs for industrial, automotive, and computing markets.
The SMB8JxxCA family targets high-reliability transient suppression in harsh environments, with design emphasis on AEC-Q101 compliance, low clamping ratio, and robust surge endurance for 12 V/24 V system interfaces.
FAQ
What is the clamping voltage of SMB8J13CAHM3/I at its rated peak pulse current?
The SMB8J13CAHM3/I has a maximum clamping voltage (VC) of 21.5 V when subjected to its rated peak pulse current (IPPM) of 37.2 A under a 10/1000 µs waveform. This value ensures protected downstream circuitry remains below safe voltage thresholds during standardized surge events, and is measured per ANSI/IEEE C62.35 definitions with device mounted on 5.0 mm × 5.0 mm copper pads.
Is SMB8J13CAHM3/I suitable for automotive applications?
Yes, SMB8J13CAHM3/I is AEC-Q101 qualified and specifically designed for automotive use, including engine control units, body electronics, and ADAS sensor modules. Its halogen-free, RoHS-compliant HM3 construction meets automotive material requirements, and its 150 °C maximum junction temperature supports under-hood deployment. The SMB8J13CAHM3/I also passes JESD201 Class 2 whisker testing for long-term solder joint reliability.
How does the bidirectional configuration of SMB8J13CAHM3/I affect circuit layout?
The SMB8J13CAHM3/I has no polarity marking and functions identically in either orientation, simplifying PCB layout and eliminating orientation-dependent assembly errors. This symmetry allows direct placement across differential lines (e.g., CAN_H/CAN_L) or unidirectional buses without concern for cathode/anode alignment - reducing design validation effort and improving manufacturing yield compared to unidirectional TVS diodes.
What is the thermal resistance of SMB8J13CAHM3/I, and why does it matter?
SMB8J13CAHM3/I has a typical junction-to-lead thermal resistance (RθJL) of 20 °C/W, enabling efficient heat transfer from the silicon die to the PCB copper through the leads. This low RθJL sustains repeated surge events without thermal runaway, especially important in confined spaces like automotive junction boxes or sealed industrial enclosures where ambient temperatures exceed 100 °C.
Can SMB8J13CAHM3/I replace SMB10J13A in an existing design?
No - SMB8J13CAHM3/I is bidirectional with 800 W PPPM, while SMB10J13A is unidirectional with 1000 W PPPM and different IPPM (46.5 A). Their clamping voltages differ (21.5 V vs. 21.5 V same, but test conditions vary), and the "8" vs. "10" prefix indicates distinct surge current capability classes. Direct substitution would compromise protection level or introduce polarity mismatch; redesign verification is required before interchange.
SMB8J13CAHM3/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:
- 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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMB8J13CAHM3/I FAQ
1.How can I place an order for SMB8J13CAHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB8J13CAHM3/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 SMB8J13CAHM3/I reliable?
The price and inventory of SMB8J13CAHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB8J13CAHM3/I is usually 5 days.
3.What payment methods are accepted for SMB8J13CAHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB8J13CAHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB8J13CAHM3/I?
SMB8J13CAHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB8J13CAHM3/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 SMB8J13CAHM3/I?
For technical support, including SMB8J13CAHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB8J13CAHM3/I requirements.
6.How does Aetrix verify that SMB8J13CAHM3/I is sourced from the original manufacturer or authorized distributors?
All SMB8J13CAHM3/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 SMB8J13CAHM3/I meets industry standards.
7.What is the process for return or replacement of SMB8J13CAHM3/I?
All SMB8J13CAHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with SMB8J13CAHM3/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 SMB8J13CAHM3/I part is unused and in its original packaging.
Return procedure for SMB8J13CAHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB8J13CAHM3/I Tags
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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