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Vishay General Semiconductor - Diodes Division SMBJ13CAHM3_B/I
- Part No.:
- SMBJ13CAHM3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ13CAHM3_B/I.pdf
- Description:
- 600W,13V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:8,270
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Product details
Overview
SMBJ13CAHM3_B/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on signal and power lines. It features a 13 V standoff voltage (VWM), 14.4–15.9 V breakdown voltage (VBR) at 1 mA, 27.9 A peak pulse current (IPPM) under 10/1000 µs waveform, and 600 W peak pulse power dissipation - deployed to protect MOSFETs, ICs, and sensor signal lines in industrial and telecom equipment.
For engineers reviewing the SMBJ13CAHM3_B/I datasheet, SMBJ13CAHM3_B/I pinout, SMBJ13CAHM3_B/I application, or SMBJ13CAHM3_B/I equivalent, this device is evaluated for ESD and surge protection in bidirectional AC-coupled interfaces, low-voltage DC rails, and automotive-grade sensor front-ends where halogen-free, AEC-Q101-compliant transient suppression is required.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with identical electrical characteristics in forward and reverse directions. Its glass-passivated junction ensures stable clamping performance and low leakage (<1.0 µA at VWM), while the 21.5 V maximum clamping voltage (VC) at IPPM defines its protective threshold during transient events.
The device complies with MSL Level 1 per J-STD-020, supports lead-free reflow up to 260 °C peak, and is rated for operation from –55 °C to +150 °C junction temperature. Its thermal resistance (RθJA) is 100 °C/W on standard 0.2" × 0.2" copper pads, enabling reliable power dissipation without heatsinking in typical PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 13 V - Maximum continuous reverse operating voltage before clamping begins; sets safe operating margin for 12 V nominal systems. |
| VBR min/max | 14.4 V / 15.9 V at 1 mA - Confirmed breakdown range ensures predictable turn-on across production lot and temperature. |
| VC @ IPPM | 21.5 V - Clamped voltage during 27.9 A 10/1000 µs surge; defines worst-case overvoltage seen by protected downstream circuitry. |
| PPPM | 600 W - Peak pulse power handling capability under standardized surge waveform; validates robustness against IEC 61000-4-5 Level 3/4 surges. |
| IPPM | 27.9 A - Peak surge current supported at VC; determines minimum trace width and layout clearance needed for transient energy routing. |
| TJ max | +150 °C - Maximum junction temperature rating enables use in under-hood automotive and high-ambient industrial environments. |
| Package | SMB (DO-214AA) - Standardized surface-mount outline with 5.59 mm × 4.06 mm footprint and 2.20 mm height; compatible with automated pick-and-place. |
Pinout & Package
Package: SMB (DO-214AA), bidirectional configuration - no polarity marking; symmetrical terminals function as interchangeable anode/cathode pair.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient current path | Both terminals conduct identically during positive or negative transients; no orientation required during placement. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled lines (e.g., RS-485, CAN, audio) without external polarity management. |
| 600 W peak pulse power | Supports IEC 61000-4-5 4 kV surge testing with margin when mounted per recommended pad layout. |
| AEC-Q101 qualified & halogen-free | Validated for automotive electronics per stress test requirements; meets RoHS and JEDEC J-STD-201 Class 2 whisker resistance. |
| Low clamping ratio (VC/VBR ≈ 1.42) | Minimizes overvoltage exposure during clamping - critical for protecting 13.5 V-rated logic and analog inputs. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking; simplifies SMT line integration and inventory handling. |
Applications
| Industrial Sensor Interface | Automotive Body Control Module |
|---|---|
|
Use Scenario: Protecting analog output lines of pressure/temperature sensors exposed to load dump and inductive switching noise in factory automation PLCs. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed directly at connector entry point to shunt transients before reaching ADC input or op-amp buffer. Use Value: Limits induced spikes to ≤21.5 V, preserving 16-bit ADC reference integrity and preventing latch-up in microcontroller analog peripherals. |
Use Scenario: Safeguarding LIN bus transceiver I/O pins against battery reverse connection and alternator load dump in door module ECUs. IC Role / Device Role / Timing Role: Primary TVS on LIN differential pair, operating in parallel with internal transceiver ESD diodes to handle higher-energy surges. Use Value: Withstands 27.9 A surge current without degradation, maintaining LIN communication integrity during ISO 7637-2 Pulse 5a events. |
| Telecom Power Input Stage | Consumer USB-C Port Protection |
|
Use Scenario: Secondary-level surge suppression on 12 V DC input rails of PoE-powered network switches after primary MOV filtering. IC Role / Device Role / Timing Role: Fast-response clamping device absorbing residual ring wave energy that passes through bulk filtering stage. Use Value: 21.5 V clamping ensures downstream DC-DC converters remain within absolute maximum ratings during 10/1000 µs transients. |
Use Scenario: Bidirectional overvoltage guard on USB-C CC and VCONN lines susceptible to hot-plug ESD and cable-induced surges. IC Role / Device Role / Timing Role: Low-capacitance TVS placed adjacent to connector to suppress ±15 kV contact ESD per IEC 61000-4-2 without signal distortion. Use Value: Halogen-free, AEC-Q101-compliant construction supports sustainability and reliability requirements in premium consumer devices. |
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_B/I | Same electrical specs and SMB package; RoHS-compliant but not halogen-free; lacks AEC-Q101 qualification. | Suitable for commercial/industrial designs where halogen-free and automotive qualification are not mandated. | Select when cost sensitivity outweighs halogen-free or automotive compliance requirements. |
| SMAJ13CAHM3_A | Lower peak pulse power (400 W vs. 600 W); SMA package (smaller footprint, higher RθJA = 140 °C/W). | Acceptable for lower-energy transients (e.g., IEC 61000-4-2 ESD only), not recommended for IEC 61000-4-5 surge. | Choose only if board space is constrained and surge threat level is limited to ESD or low-energy switching noise. |
Compared with SMBJ13CAHM3_B/I, the HE3 variant trades halogen-free content and AEC-Q101 validation for lower cost, while the SMAJ13CAHM3_A reduces surge capacity and thermal performance to fit tighter layouts - making SMBJ13CAHM3_B/I the optimal choice for robust, automotive-grade bidirectional protection where full 600 W capability and material compliance are mandatory.
Availability
SMBJ13CAHM3_B/I is available at Aetrix Electronics and suitable for industrial sensor interfaces, automotive body control modules, and telecom power input stages requiring stable component supply, long-term lifecycle support, and halogen-free compliance.
Supply support for SMBJ13CAHM3_B/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, efficiency, and application-specific optimization.
The SMBJ series is engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where consistent clamping performance and AEC-Q101 validation are essential.
FAQ
What does the "CA" suffix indicate in SMBJ13CAHM3_B/I?
The "CA" suffix denotes a bidirectional configuration: SMBJ13CAHM3_B/I provides symmetrical clamping for both positive and negative voltage transients, unlike unidirectional "A" variants. This makes SMBJ13CAHM3_B/I ideal for AC-coupled interfaces such as RS-485, CAN, or audio lines where polarity reversal occurs. Its VBR and VC values apply identically in either direction, and no cathode band marking is present on the SMB package.
How does SMBJ13CAHM3_B/I differ from standard SMBJ13A?
SMBJ13CAHM3_B/I is bidirectional (CA), whereas SMBJ13A is unidirectional (A) with a marked cathode band. Electrically, SMBJ13CAHM3_B/I has identical VWM (13 V) and VBR (14.4–15.9 V), but supports conduction in both directions - critical for protecting differential or floating signal lines. The HM3 suffix also confirms halogen-free, RoHS-compliant, and AEC-Q101-qualified construction, unlike base SMBJ13A variants.
Is SMBJ13CAHM3_B/I suitable for IEC 61000-4-5 surge testing?
Yes - SMBJ13CAHM3_B/I delivers 600 W peak pulse power with a 10/1000 µs waveform and clamps to 21.5 V at 27.9 A, meeting IEC 61000-4-5 Level 3 (2 kV line-earth, 1 kV line-line) and Level 4 (4 kV line-earth) when mounted per Vishay's recommended 0.2" × 0.2" copper pad layout. Its 150 °C TJmax and MSL Level 1 rating further support repeatable surge endurance in production systems.
What is the significance of the "HM3" and "B/I" in SMBJ13CAHM3_B/I?
"HM3" indicates halogen-free, RoHS-compliant, and AEC-Q101-qualified construction; "B/I" specifies packaging: "B" denotes tape-and-reel format, and "I" means 3200 units per 13-inch reel. This distinguishes SMBJ13CAHM3_B/I from HE3 (RoHS only, no halogen-free/AEC-Q101) and from /52 or /5B variants (7-inch reel, smaller quantity). The full part number ensures traceability to validated automotive-grade material and assembly process controls.
Can SMBJ13CAHM3_B/I replace SMBJ12CA in an existing design?
SMBJ13CAHM3_B/I is not a direct replacement for SMBJ12CA due to its higher VWM (13 V vs. 12 V) and VBR (14.4–15.9 V vs. 13.3–14.7 V), which raises the clamping threshold by ~0.8–1.2 V. While both are bidirectional SMB-packaged TVS diodes, substituting SMBJ13CAHM3_B/I may leave 12 V systems inadequately protected during marginal overvoltage events. Verify system margin and transient profile before interchange; SMBJ12CAHM3_B/I would be the functionally aligned alternative.
SMBJ13CAHM3_B/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:
- 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):
- 27.9A
- Power - Peak Pulse:
- 600W
- 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)
SMBJ13CAHM3_B/I FAQ
1.How can I place an order for SMBJ13CAHM3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ13CAHM3_B/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 SMBJ13CAHM3_B/I reliable?
The price and inventory of SMBJ13CAHM3_B/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ13CAHM3_B/I is usually 5 days.
3.What payment methods are accepted for SMBJ13CAHM3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ13CAHM3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ13CAHM3_B/I?
SMBJ13CAHM3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ13CAHM3_B/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 SMBJ13CAHM3_B/I?
For technical support, including SMBJ13CAHM3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ13CAHM3_B/I requirements.
6.How does Aetrix verify that SMBJ13CAHM3_B/I is sourced from the original manufacturer or authorized distributors?
All SMBJ13CAHM3_B/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 SMBJ13CAHM3_B/I meets industry standards.
7.What is the process for return or replacement of SMBJ13CAHM3_B/I?
All SMBJ13CAHM3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ13CAHM3_B/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 SMBJ13CAHM3_B/I part is unused and in its original packaging.
Return procedure for SMBJ13CAHM3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ13CAHM3_B/I Tags
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Diodes Incorporated
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