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Vishay General Semiconductor - Diodes Division SMB8J13CAHE3_A/H
- Part No.:
- SMB8J13CAHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB8J13CAHE3_A/H.pdf
- Description:
- TVS DIODE 13VWM 21.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,392
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Product details
Overview
SMB8J13CAHE3_A/H 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 - optimized for automotive-grade ESD and load-dump protection in sensor interfaces and power supply rails.
For engineers reviewing the SMB8J13CAHE3_A/H datasheet, SMB8J13CAHE3_A/H pinout, SMB8J13CAHE3_A/H application, or SMB8J13CAHE3_A/H equivalent, this AEC-Q101 qualified TVS offers verified bidirectional clamping performance, low leakage (<1.0 µA at VWM), and MSL Level 1 moisture sensitivity - critical for under-hood automotive electronics, industrial I/O protection, and robust sensor front-end design.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, enabling protection of AC-coupled or differential signal paths without polarity constraints. Its glass-passivated junction ensures stable breakdown behavior and fast response time (<1 ns), while the low incremental surge resistance supports consistent clamping under repetitive transients.
The device is rated for -55 °C to +150 °C operating junction temperature and meets JESD201 Class 2 whisker resistance. Its thermal resistance (RθJL = 20 °C/W) enables effective heat dissipation through PCB copper pads, and its 72 °C/W junction-to-ambient rating assumes standard 0.2" × 0.2" (5.0 mm × 5.0 mm) pad layout per terminal.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 13 V - maximum continuous reverse voltage before significant leakage; defines safe operating margin below clamping threshold |
| VBR (Breakdown Voltage) | 14.4 V min / 15.9 V max at 1.0 mA - precise voltage threshold where avalanche conduction initiates reliably |
| VC (Clamping Voltage) | 21.5 V at IPPM = 37.2 A - peak voltage seen by protected circuit during 10/1000 µs surge; limits stress on downstream ICs |
| PPPM (Peak Pulse Power) | 800 W - energy-handling capacity for standardized 10/1000 µs transient; validates suitability for ISO 7637-2 Pulse 1/2/5a |
| ID (Reverse Leakage) | <1.0 µA at VWM - negligible standby current; avoids signal distortion or battery drain in always-on systems |
| TJ max | +150 °C - enables operation in under-hood automotive environments and industrial enclosures without derating |
| AEC-Q101 Qualified | Yes - validated for automotive reliability including temperature cycling, HTRB, and ESD testing per AEC specification |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking - symmetrical terminals suitable for AC or differential line protection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Both terminals function identically; conducts surge current bidirectionally when voltage exceeds ±VBR |
| Cathode Band (absent) | Polarity indicator | Not present - confirms bidirectional construction; no orientation required during placement |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals, RS-485 buses, or ungrounded sensor outputs without external polarity management |
| AEC-Q101 qualification | Validated for automotive use including temperature cycling, HTRB, and ESD; supports PPAP documentation for Tier 1 programs |
| Low clamping ratio (VC/VBR ≈ 1.35) | Minimizes overvoltage exposure during surge events - critical for safeguarding 3.3 V or 5 V logic interfaces |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without baking or special handling |
| Glass-passivated junction | Ensures long-term parameter stability and low leakage drift across temperature and lifetime |
Applications
| Automotive Sensor Interface | Industrial RS-485 Bus |
|---|---|
Use Scenario: Protecting wheel speed, pressure, or temperature sensors connected to vehicle ECUs against ISO 7637-2 load dump and inductive switching transients. IC Role / Device Role / Timing Role: Bidirectional TVS placed at connector entry point to clamp ±200 V surges before reaching analog front-end or CAN transceiver. Use Value: Prevents latch-up or permanent damage to precision ADCs and microcontrollers while maintaining signal integrity via low capacitance and sub-1 ns response. |
Use Scenario: Shielding RS-485 transceivers in factory automation PLCs from ground loop surges and lightning-induced common-mode transients. IC Role / Device Role / Timing Role: Differential-line TVS across A/B bus lines to suppress ±30 kV ESD (IEC 61000-4-2) and 4 kV EFT (IEC 61000-4-4). Use Value: Maintains data integrity up to 25 Mbps by limiting bus voltage excursion to ≤21.5 V without adding signal distortion or timing skew. |
| Power Supply Input Protection | USB Type-C Port Protection |
Use Scenario: Safeguarding 12 V/24 V DC input rails of infotainment head units and ADAS domain controllers from battery reverse connection and jump-start spikes. IC Role / Device Role / Timing Role: Primary surge limiter upstream of DC-DC converters and LDOs, absorbing up to 800 W for 1 ms. Use Value: Eliminates need for secondary crowbar circuits; sustains operation after multiple ISO 16750-2 Pulse 5a events without degradation. |
Use Scenario: Protecting USB Type-C CC and VBUS lines in automotive docking stations against hot-plug transients and cable ESD. IC Role / Device Role / Timing Role: Bidirectional clamping element on CC1/CC2 lines to prevent false orientation detection and port controller latch-up. Use Value: Complies with USB PD 3.1 ESD requirements while supporting reversible plug insertion - no polarity dependency required. |
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_A/H | Unidirectional variant with same VWM/VC but asymmetric conduction; lacks reverse-polarity clamping capability | Only suitable for DC-biased lines where polarity is fixed; not usable on AC or floating differential pairs | Select only if circuit topology guarantees unidirectional surge direction and space constraints favor identical footprint |
| SMAJ13CAHE3_A/H | Lower PPPM (400 W) and higher VC (23.2 V); SMA package has larger RθJA (110 °C/W) and lower surge current rating | Insufficient for ISO 7637-2 Pulse 5a compliance; limited to low-energy consumer I/O protection | Choose only for cost-sensitive non-automotive designs where 800 W rating is unnecessary and board space allows larger footprint |
Compared with SMBJ13CAHE3_A/H and SMAJ13CAHE3_A/H, SMB8J13CAHE3_A/H delivers superior bidirectional surge immunity, automotive-grade reliability, and tighter clamping - making it the optimal choice for safety-critical and high-energy transient environments where polarity-agnostic protection is mandatory.
Availability
SMB8J13CAHE3_A/H is available at Aetrix Electronics and suitable for automotive sensor protection, industrial communication interface hardening, and power supply input surge suppression requiring stable component supply across extended production lifecycles.
Supply support for SMB8J13CAHE3_A/H 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 application-specific performance.
The SMB8J series is part of 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 SMB8J13CAHE3_A/H at its rated peak pulse current?
The SMB8J13CAHE3_A/H has a maximum clamping voltage (VC) of 21.5 V at its specified peak pulse current (IPPM) of 37.2 A with a 10/1000 µs waveform. This value is measured under standardized test conditions and represents the upper voltage limit imposed on protected circuitry during surge events - a key parameter for ensuring compatibility with 3.3 V, 5 V, or 12 V system rails. The SMB8J13CAHE3_A/H maintains this clamping performance consistently across its qualified temperature range.
Is SMB8J13CAHE3_A/H suitable for automotive applications?
Yes, SMB8J13CAHE3_A/H is AEC-Q101 qualified and explicitly designed for automotive use, including under-hood and chassis-mounted modules. Its construction meets MSL Level 1, its junction temperature rating extends to +150 °C, and its surge performance aligns with ISO 7637-2 and ISO 16750-2 test pulses. The HE3 suffix denotes RoHS-compliant and AEC-Q101-qualified manufacturing - making SMB8J13CAHE3_A/H appropriate for production ECUs, ADAS sensors, and infotainment systems.
How does SMB8J13CAHE3_A/H differ from unidirectional TVS diodes like SMBJ13CAHE3_A/H?
SMB8J13CAHE3_A/H is bidirectional, meaning it clamps voltage surges equally in both polarities - essential for protecting AC-coupled lines, differential buses (e.g., RS-485), or floating sensor outputs. In contrast, SMBJ13CAHE3_A/H is unidirectional and only clamps in reverse bias; forward conduction occurs at ~0.7 V, limiting its use to DC-biased applications. The SMB8J13CAHE3_A/H has no cathode band marking, confirming its symmetrical structure - a functional distinction critical for correct implementation.
What is the maximum reverse leakage current for SMB8J13CAHE3_A/H at its stand-off voltage?
The SMB8J13CAHE3_A/H exhibits a maximum reverse leakage current (ID) of 1.0 µA at its stand-off voltage (VWM) of 13 V, measured at 25 °C. This ultra-low leakage ensures minimal impact on high-impedance sensor inputs or battery-powered circuits, preserving signal fidelity and extending operational life. The value remains within specification across the full operating temperature range (-55 °C to +150 °C), supported by Vishay's glass-passivated junction technology used in the SMB8J13CAHE3_A/H.
Does SMB8J13CAHE3_A/H require special PCB layout considerations?
Yes - optimal thermal and electrical performance of SMB8J13CAHE3_A/H requires adherence to Vishay's recommended mounting pad layout: 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, with minimum trace width of 0.060" (1.52 mm). This layout ensures effective heat dissipation (RθJL = 20 °C/W) and maintains the rated 800 W peak pulse power. Deviating from these dimensions may reduce surge capability or cause premature failure under repeated transients - a key design constraint for the SMB8J13CAHE3_A/H.
SMB8J13CAHE3_A/H 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/H FAQ
1.How can I place an order for SMB8J13CAHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB8J13CAHE3_A/H 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/H reliable?
The price and inventory of SMB8J13CAHE3_A/H 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/H is usually 5 days.
3.What payment methods are accepted for SMB8J13CAHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB8J13CAHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB8J13CAHE3_A/H?
SMB8J13CAHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB8J13CAHE3_A/H 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/H?
For technical support, including SMB8J13CAHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB8J13CAHE3_A/H requirements.
6.How does Aetrix verify that SMB8J13CAHE3_A/H is sourced from the original manufacturer or authorized distributors?
All SMB8J13CAHE3_A/H 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/H meets industry standards.
7.What is the process for return or replacement of SMB8J13CAHE3_A/H?
All SMB8J13CAHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMB8J13CAHE3_A/H, 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/H part is unused and in its original packaging.
Return procedure for SMB8J13CAHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB8J13CAHE3_A/H Tags
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