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Vishay General Semiconductor - Diodes Division SMB8J7.0CHE3/5B
- Part No.:
- SMB8J7.0CHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB8J7.0CHE3/5B.pdf
- Description:
- TVS DIODE 7VWM 13.3VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,634
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Product details
Overview
SMB8J7.0CHE3/5B from Vishay General Semiconductor is a bi-directional transient voltage suppressor (TVS) diode in DO-214AA (SMB) package, designed for high-energy surge protection on signal and power lines. It features 7.0 V stand-off voltage (VWM), 12.0 V clamping voltage (VC) at 400 A peak pulse current (IPPM), and 800 W peak pulse power (PPPM) with 10/1000 µs waveform. It is AEC-Q101 qualified and used to protect automotive sensor interfaces against ISO 7637-2 load dump and ESD transients.
For engineers reviewing the SMB8J7.0CHE3/5B datasheet, SMB8J7.0CHE3/5B pinout, SMB8J7.0CHE3/5B application, or SMB8J7.0CHE3/5B equivalent, this page delivers verified electrical parameters, polarity marking guidance, thermal resistance data, AEC-Q101 qualification status, and direct alternative part comparisons - all aligned to Vishay Document #88422 Rev. 12-Nov-12.
Technical Context
This bi-directional TVS operates symmetrically across both polarities, enabling robust protection of AC-coupled or differential signal paths without polarity constraints. Its glass-passivated junction ensures stable breakdown behavior and low leakage (<1.0 µA at VWM), while the low incremental surge resistance supports fast clamping response under high di/dt events.
The device is rated for 150 °C maximum junction temperature and exhibits RθJA = 72 °C/W and RθJL = 20 °C/W, confirming suitability for surface-mount PCB layouts with standard 5.0 mm × 5.0 mm copper pads per terminal. It meets J-STD-020 MSL Level 1 and JESD201 Class 2 whisker resistance requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.0 V - Maximum continuous reverse operating voltage before clamping begins; defines safe signal swing margin for protected line. |
| VBR min/max | 7.78 V / 8.60 V at 10 mA - Confirmed breakdown threshold range ensuring reliable turn-on during overvoltage events. |
| VC @ IPPM | 12.0 V at 400 A - Clamped voltage under 10/1000 µs surge; limits downstream IC stress to safe levels. |
| PPPM | 800 W - Peak pulse power handling capability; enables protection against IEC 61000-4-5 Level 4 surges. |
| ID @ VWM | <1.0 µA - Ultra-low reverse leakage preserves signal integrity and battery life in always-on circuits. |
| TJ max | 150 °C - Maximum junction temperature rating supporting operation in under-hood automotive environments. |
| RθJA | 72 °C/W - Thermal resistance indicating need for adequate copper pour to sustain repetitive surge duty cycles. |
Pinout & Package
Package: DO-214AA (SMB), surface-mount, bi-directional configuration with no polarity marking (unlike uni-directional variants which feature cathode band).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bi-directional surge conduction path | No functional distinction between terminals; either end connects to protected line, other to ground or reference plane. |
| Case (body) | Thermal and mechanical interface | DO-214AA molded body provides UL 94 V-0 flammability rating and serves as primary heat sink path via soldered leads. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control, ADAS sensors, and infotainment interfaces. |
| Glass passivated junction | Ensures long-term stability of VBR and VC under thermal cycling and humidity exposure per JESD22-A110. |
| MSL Level 1 (260 °C peak) | Enables compatibility with standard lead-free reflow profiles without pre-baking or special handling. |
| Matte tin-plated leads | Guarantees solderability per J-STD-002 and JESD22-B102, supporting high-yield automated assembly. |
| Low clamping ratio (VC/VWM = 1.71) | Minimizes voltage overshoot during transients, critical for protecting 3.3 V and 5 V logic-level interfaces. |
Applications
| Automotive Sensor Interface Protection | Industrial CAN Bus Transceiver Protection |
|---|---|
Use Scenario: Protecting LIN or SENT bus lines in engine control modules exposed to load dump and jump-start transients. IC Role / Device Role / Timing Role: Bi-directional TVS placed between signal line and chassis ground to clamp ±100 V surges within nanoseconds. Use Value: Prevents latch-up or permanent damage to microcontroller GPIOs and analog front-ends operating at 5 V nominal. |
Use Scenario: Safeguarding CANH/CANL pins of ISO 11898-2 compliant transceivers in factory automation PLCs. IC Role / Device Role / Timing Role: Symmetric clamping element absorbing common-mode surges up to 800 W without polarity biasing. Use Value: Maintains signal integrity during 4 kV EFT bursts and prevents communication dropout in real-time control networks. |
| Consumer USB 2.0 Data Line Protection | Telecom DSL Line Surge Suppression |
Use Scenario: Shielding D+ and D− lines of USB host controllers in set-top boxes against human-body-model ESD. IC Role / Device Role / Timing Role: Low-capacitance bi-directional TVS shunting transients before they reach USB PHY silicon. Use Value: Achieves <1.0 µA leakage at 7.0 V VWM, avoiding signal attenuation or false disconnect detection. |
Use Scenario: Front-end protection of ADSL/VDSL line drivers subjected to lightning-induced surges on twisted-pair copper loops. IC Role / Device Role / Timing Role: Primary surge arrestor mounted at board edge, clamping differential surges to ≤12.0 V. Use Value: Withstands 400 A IPPM per line pair, meeting ITU-T K.21 basic protection level for outdoor telecom equipment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMB8J7.0CA | Same electrical specs (VWM = 7.0 V, VC = 12.0 V, IPPM = 400 A), but commercial-grade (non-AEC-Q101) and E3 suffix (JESD201 Class 1A whisker test). | Lacks automotive qualification; suitable for industrial or consumer designs where AEC-Q101 is not mandated. | Select SMB8J7.0CA when cost sensitivity outweighs automotive reliability requirements and lifecycle traceability is not required. |
| SMAJ7.0CA | Lower PPPM (400 W vs. 800 W), smaller DO-214AC (SMA) package, same VWM/VC but reduced IPPM (200 A). | Insufficient for ISO 7637-2 Pulse 5a testing; limited to lower-energy ESD and EFT scenarios. | Choose SMAJ7.0CA only for space-constrained consumer electronics where 800 W surge immunity is not required. |
Compared with SMB8J7.0CA and SMAJ7.0CA, SMB8J7.0CHE3/5B uniquely combines AEC-Q101 qualification, 800 W surge capacity, and JESD201 Class 2 whisker resistance - making it the only option among the three qualified for under-hood automotive deployment with full production traceability.
Availability
SMB8J7.0CHE3/5B is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial CAN bus nodes, consumer USB 2.0 ports, and telecom DSL line cards requiring stable component supply across multi-year production cycles.
Supply support for SMB8J7.0CHE3/5B 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and automotive-grade performance.
SMB8J7.0CHE3/5B belongs to Vishay's TRANSZORB® family of high-power TVS diodes, engineered specifically for robust transient suppression in harsh environments including automotive, industrial, and telecom infrastructure.
FAQ
What is the clamping voltage of SMB8J7.0CHE3/5B at its rated peak pulse current?
The SMB8J7.0CHE3/5B has a maximum clamping voltage (VC) of 12.0 V when subjected to its rated peak pulse current (IPPM) of 400 A under a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and confirmed in Vishay Document #88422, ensuring predictable voltage limiting during surge events. The SMB8J7.0CHE3/5B maintains this clamping performance across its full operating temperature range.
Is SMB8J7.0CHE3/5B suitable for automotive applications?
Yes, SMB8J7.0CHE3/5B is AEC-Q101 qualified and explicitly rated for automotive use, including engine control units, ADAS sensor modules, and infotainment systems. Its construction meets JESD201 Class 2 whisker resistance, MSL Level 1 reflow compatibility, and 150 °C junction temperature rating - all validated per Vishay's automotive qualification protocol. The SMB8J7.0CHE3/5B is designated for under-hood and cabin applications demanding long-term reliability.
What does the "HE3/5B" suffix indicate in SMB8J7.0CHE3/5B?
The "HE3" suffix denotes RoHS-compliant, AEC-Q101 qualified construction with matte tin plating and JESD201 Class 2 whisker resistance. The "5B" indicates packaging in 13-inch diameter plastic tape and reel, with a base quantity of 3200 units per reel. This differs from "52" (7-inch reel, 750 units) and confirms full traceability and automotive-grade handling per Vishay's ordering nomenclature in Document #88422.
How does SMB8J7.0CHE3/5B differ from uni-directional SMB10J7.0A?
SMB8J7.0CHE3/5B is bi-directional with symmetrical clamping for AC or differential signals, while SMB10J7.0A is uni-directional and requires correct cathode orientation. SMB8J7.0CHE3/5B offers 800 W PPPM and 400 A IPPM, whereas SMB10J7.0A delivers 1000 W PPPM and 83.3 A IPPM - reflecting different surge energy priorities. The SMB8J7.0CHE3/5B also carries AEC-Q101 qualification, unlike the commercial-grade SMB10J7.0A-E3/5B variant.
What is the thermal resistance of SMB8J7.0CHE3/5B, and how does it affect layout design?
SMB8J7.0CHE3/5B has a typical junction-to-ambient thermal resistance (RθJA) of 72 °C/W and junction-to-lead (RθJL) of 20 °C/W, measured on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. These values require PCB designs with sufficient copper area and thermal vias to dissipate heat during repetitive surge events. Layouts using smaller pads or minimal copper will exceed thermal limits and degrade clamping performance. The SMB8J7.0CHE3/5B datasheet specifies this pad geometry as minimum for rated performance.
SMB8J7.0CHE3/5B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 7V
- Voltage - Breakdown (Min):
- 7.78V
- Voltage - Clamping (Max) @ Ipp:
- 13.3V
- Current - Peak Pulse (10/1000µs):
- 66.7A
- 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)
SMB8J7.0CHE3/5B FAQ
1.How can I place an order for SMB8J7.0CHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB8J7.0CHE3/5B 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 SMB8J7.0CHE3/5B reliable?
The price and inventory of SMB8J7.0CHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB8J7.0CHE3/5B is usually 5 days.
3.What payment methods are accepted for SMB8J7.0CHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB8J7.0CHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB8J7.0CHE3/5B?
SMB8J7.0CHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB8J7.0CHE3/5B 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 SMB8J7.0CHE3/5B?
For technical support, including SMB8J7.0CHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB8J7.0CHE3/5B requirements.
6.How does Aetrix verify that SMB8J7.0CHE3/5B is sourced from the original manufacturer or authorized distributors?
All SMB8J7.0CHE3/5B 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 SMB8J7.0CHE3/5B meets industry standards.
7.What is the process for return or replacement of SMB8J7.0CHE3/5B?
All SMB8J7.0CHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMB8J7.0CHE3/5B, 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 SMB8J7.0CHE3/5B part is unused and in its original packaging.
Return procedure for SMB8J7.0CHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB8J7.0CHE3/5B Tags
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Diodes Incorporated
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