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Vishay General Semiconductor - Diodes Division SMB8J13CAHE3/5B
- Part No.:
- SMB8J13CAHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB8J13CAHE3/5B.pdf
- Description:
- TVS DIODE 13VWM 21.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,565
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Product details
Overview
SMB8J13CAHE3/5B 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 standoff 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 - optimized for automotive-grade ESD and load-dump protection in sensor interfaces and power rails.
For engineers reviewing the SMB8J13CAHE3/5B datasheet, SMB8J13CAHE3/5B pinout, SMB8J13CAHE3/5B application, or SMB8J13CAHE3/5B equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, low clamping ratio (VC/VWM ≈ 1.65), MSL Level 1 moisture sensitivity, 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, responding within <1 ns to transients exceeding its 14.4–15.9 V breakdown range (VBR at 1 mA). Its glass-passivated junction ensures stable leakage (<1 µA at VWM) and robust surge handling up to 100 A IFSM (unidirectional only; not applicable here due to bidirectional configuration).
The SMB8J13CAHE3/5B is rated for -55 °C to +150 °C operating junction temperature, with thermal resistance RθJA = 72 °C/W and RθJL = 20 °C/W - enabling reliable operation under sustained surge stress when mounted per recommended pad layout. It complies with ANSI/IEEE C62.35 and meets JESD201 Class 2 whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 13 V - maximum continuous reverse working voltage before clamping initiates |
| VBR min/max | 14.4 V / 15.9 V at 1 mA - precise breakdown threshold defining turn-on consistency |
| VC @ IPPM | 21.5 V at 37.2 A - clamping voltage limiting downstream IC stress during 10/1000 µs surge |
| PPPM | 800 W - peak transient energy absorption capacity under standardized waveform |
| ID @ VWM | <1 µA - ultra-low leakage preserving signal integrity in high-impedance circuits |
| TJ max | +150 °C - extended thermal margin supporting under-hood automotive deployment |
| Qualification | AEC-Q101 qualified - validated for automotive electronic systems per stress test requirements |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional - no polarity marking; symmetrical terminals suitable for AC-coupled or differential line protection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (1) | Surge current path input | Either terminal accepts transient energy; bidirectional conduction enables dual-rail or floating-line protection |
| Anode/Cathode (2) | Surge current path return | Completes low-impedance shunt path to ground or reference rail during overvoltage event |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Protects AC signals, differential buses (e.g., CAN, LIN), and floating power domains without polarity constraints |
| AEC-Q101 qualification | Validated reliability for automotive ECUs, ADAS sensors, and body control modules requiring long-term field stability |
| Low clamping ratio (VC/VWM) | 1.65 - minimizes overvoltage exposure to protected ICs compared to higher-ratio alternatives |
| MSL Level 1 rating | Enables standard reflow without baking; compatible with high-volume automated assembly at 260 °C peak |
| Glass-passivated junction | Ensures stable VBR tolerance, low leakage drift over temperature, and resistance to humidity-induced degradation |
Applications
| Automotive Sensor Protection | Industrial CAN Bus Interface |
|---|---|
Use Scenario: Protecting MEMS pressure sensors and Hall-effect position sensors from load-dump and ISO 7637-2 pulses in engine control units. IC Role / Device Role / Timing Role: Shunt TVS diode placed across sensor supply and ground pins to clamp transients before they reach analog front-end ICs. Use Value: Limits voltage excursion to ≤21.5 V during 37.2 A surges, preventing latch-up or gate oxide damage in 5 V/12 V sensor ICs. | Use Scenario: Safeguarding CAN transceivers (e.g., TJA1042) against ESD and fast transient bursts in factory automation networks. IC Role / Device Role / Timing Role: Bidirectional TVS connected between CAN_H and CAN_L lines to suppress common-mode and differential-mode noise spikes. Use Value: Maintains signal integrity by clamping transients within ±21.5 V window while adding <0.5 pF capacitance at 0 V bias. |
| Consumer Power Adapter Input | Telecom Line Card Surge Protection |
Use Scenario: Input-stage protection for USB-C PD adapters exposed to lightning-induced surges on AC mains-derived DC rails. IC Role / Device Role / Timing Role: Primary shunt limiter on 12–20 V intermediate bus, upstream of DC-DC controllers and MOSFETs. Use Value: Absorbs 800 W peak pulses without degradation, enabling compliance with IEC 61000-4-5 Level 3 (1 kV/2 Ω) | Use Scenario: Secondary-side protection on Ethernet PHY power rails (3.3 V, 5 V) in VoIP gateways subjected to induced surges from nearby telephone lines. IC Role / Device Role / Timing Role: Low-leakage (≤1 µA) TVS placed between VDD and GND to prevent brownout or reset glitches during transient events. Use Value: Delivers 21.5 V clamping at 37.2 A with <100 ps response, ensuring PHY ICs remain operational during 10/1000 µs surges. |
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 | Unqualified commercial grade; same VWM/VC/IPPM but lacks AEC-Q101 validation and HE3 suffix traceability | Acceptable for industrial or consumer use where automotive qualification is not mandated | Select when cost sensitivity outweighs automotive reliability requirements |
| SMCJ13CAHE3/5B | Higher PPPM (1500 W), larger SMC (DO-214AB) package, identical electrical specs but 30% larger footprint | Preferred where higher surge margin is required and PCB space permits larger package | Choose for enhanced ruggedness in harsh environments with available board area |
Compared with SMBJ13CA-E3/5B and SMCJ13CAHE3/5B, the SMB8J13CAHE3/5B uniquely balances AEC-Q101 compliance, compact SMB footprint, and 800 W surge rating - making it optimal for space-constrained automotive modules needing certified reliability without over-engineering.
Availability
SMB8J13CAHE3/5B is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial CAN networks, consumer power adapter inputs, and telecom line card designs requiring stable component supply and full traceability.
Supply support for SMB8J13CAHE3/5B 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, rectifiers, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SMB8J series belongs to Vishay's TRANSZORB® TVS family, engineered specifically for high-power-density, AEC-Q101-compliant transient suppression in automotive and industrial systems where compact size and repeatable clamping performance are critical.
FAQ
What is the clamping voltage of SMB8J13CAHE3/5B at its rated peak pulse current?
The SMB8J13CAHE3/5B 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 is measured per ANSI/IEEE C62.35 and ensures predictable overvoltage limiting for downstream components in protected circuits.
Is SMB8J13CAHE3/5B suitable for automotive applications?
Yes, SMB8J13CAHE3/5B is AEC-Q101 qualified and carries the HE3 suffix denoting RoHS-compliant, automotive-grade construction. It is explicitly validated for use in engine control units, ADAS sensors, and body electronics where reliability under thermal cycling, vibration, and surge stress is mandatory.
How does the bidirectional configuration of SMB8J13CAHE3/5B affect its circuit placement?
The SMB8J13CAHE3/5B has no polarity marking and conducts identically in both directions, allowing placement across any two nodes requiring symmetric overvoltage protection - such as CAN_H/CAN_L, AC signal pairs, or floating power domains - without orientation constraints during automated assembly.
What is the thermal resistance of SMB8J13CAHE3/5B and how does it impact layout design?
SMB8J13CAHE3/5B has a typical junction-to-ambient thermal resistance (RθJA) of 72 °C/W and junction-to-lead (RθJL) of 20 °C/W. To maintain safe TJ ≤ 150 °C, PCB layout must use minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal as specified in the Vishay datasheet 88422.
Does SMB8J13CAHE3/5B require special handling during reflow soldering?
No - SMB8J13CAHE3/5B is rated MSL Level 1 per J-STD-020 and supports lead-free reflow with a maximum peak temperature of 260 °C. No pre-baking is required, and it is fully compatible with standard SMT assembly lines using 7" or 13" tape-and-reel delivery (5B code denotes 3200-unit reel).
SMB8J13CAHE3/5B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- 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)
SMB8J13CAHE3/5B FAQ
1.How can I place an order for SMB8J13CAHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB8J13CAHE3/5B 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 SMB8J13CAHE3/5B reliable?
The price and inventory of SMB8J13CAHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB8J13CAHE3/5B is usually 5 days.
3.What payment methods are accepted for SMB8J13CAHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB8J13CAHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB8J13CAHE3/5B?
SMB8J13CAHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB8J13CAHE3/5B 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 SMB8J13CAHE3/5B?
For technical support, including SMB8J13CAHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB8J13CAHE3/5B requirements.
6.How does Aetrix verify that SMB8J13CAHE3/5B is sourced from the original manufacturer or authorized distributors?
All SMB8J13CAHE3/5B 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 SMB8J13CAHE3/5B meets industry standards.
7.What is the process for return or replacement of SMB8J13CAHE3/5B?
All SMB8J13CAHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMB8J13CAHE3/5B, 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 SMB8J13CAHE3/5B part is unused and in its original packaging.
Return procedure for SMB8J13CAHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB8J13CAHE3/5B Tags
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