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Vishay General Semiconductor - Diodes Division SMB8J36CAHM3_B/H
- Part No.:
- SMB8J36CAHM3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB8J36CAHM3_B/H.pdf
- Description:
- 800W,36V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:2,830
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Product details
Overview
SMB8J36CAHM3_B/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 36 V stand-off voltage (VWM), 40.0–44.2 V breakdown voltage (VBR), 13.8 A peak pulse current (IPPM) under 10/1000 µs waveform, and clamps transients to ≤58.1 V at rated surge. It is AEC-Q101 qualified and halogen-free, targeting automotive sensor interface and power rail protection.
For engineers reviewing the SMB8J36CAHM3_B/H datasheet, SMB8J36CAHM3_B/H pinout, SMB8J36CAHM3_B/H application, or SMB8J36CAHM3_B/H equivalent, key selection criteria include bidirectional clamping capability, 800 W peak pulse power rating, AEC-Q101 qualification status, and compatibility with automated SMT assembly on 0.2" × 0.2" copper pads.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector, responding within picoseconds to transient overvoltages induced by inductive switching or ESD events. Its glass-passivated junction ensures stable breakdown behavior and low leakage (<1.0 µA at VWM), while its low incremental surge resistance enables effective energy diversion without thermal runaway.
The device is rated for -55 °C to +150 °C operating junction temperature and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. Its bidirectional symmetry allows use on AC-coupled or floating lines without polarity concerns, and its 72 °C/W junction-to-ambient thermal resistance supports reliable operation under repeated surge stress when mounted per recommended pad layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 36 V - Maximum continuous reverse voltage before significant leakage; defines safe operating margin below clamping threshold. |
| VBR (Breakdown Voltage) | 40.0–44.2 V at 1.0 mA - Confirmed voltage range where device transitions into avalanche conduction; ensures predictable turn-on during surges. |
| VC (Clamping Voltage) | ≤58.1 V at IPPM - Maximum voltage seen by protected circuit during 13.8 A 10/1000 µs surge; determines downstream component stress. |
| PPPM (Peak Pulse Power) | 800 W - Energy-handling capacity under standardized 10/1000 µs waveform; defines single-event surge robustness. |
| ID (Reverse Leakage) | ≤1.0 µA at VWM - Minimal standby current; critical for low-power sensor and battery-backed circuits. |
| TJ max. | +150 °C - Maximum junction temperature; enables deployment in under-hood automotive environments. |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC standard. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, matte tin-plated leads. Case conforms to UL 94 V-0 flammability rating. Polarity: unmarked - bidirectional operation requires no cathode/anode orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient current path | Both terminals serve identical roles in bidirectional clamping; no polarity-dependent mounting required. |
| Case (body) | Thermal and mechanical interface | Non-electrical; provides mechanical anchoring and contributes to thermal dissipation via PCB copper pads. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables protection of AC-coupled, differential, or floating signal lines without polarity constraints. |
| AEC-Q101 qualification | Validates reliability for automotive applications including engine control units, ADAS sensors, and infotainment interfaces. |
| Glass-passivated junction | Ensures stable VBR tolerance, low leakage drift over time, and resistance to humidity-induced degradation. |
| MSL Level 1 rating | Supports standard lead-free reflow profiles up to 260 °C peak without preconditioning or baking. |
| Low profile SMB package | 0.130" × 0.205" footprint enables dense PCB layouts while maintaining 800 W surge capability. |
Applications
| Automotive Sensor Protection | Industrial CAN Bus Interface |
|---|---|
|
Use Scenario: Protecting analog output lines of pressure, temperature, or position sensors in engine compartments exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Shunt-type transient suppressor placed between signal line and ground, clamping spikes before they reach ADC input or signal conditioner. Use Value: Maintains signal integrity under 100 V/100 ms load dump events while adding <0.5 pF capacitance to preserve bandwidth. |
Use Scenario: Safeguarding CAN_H/CAN_L differential pair against ESD and inductive kickback in factory automation controllers. IC Role / Device Role / Timing Role: Bidirectional TVS pair (one per line) referenced to common ground, absorbing ±15 kV contact ESD per IEC 61000-4-2. Use Value: Prevents bus lockup or transceiver damage without distorting 1 Mbps CAN signaling due to low dynamic impedance. |
| Power Supply Input Protection | USB Type-C Port Protection |
|
Use Scenario: Guarding 12 V/24 V DC input rails of telematics modules against reverse battery connection and jump-start transients. IC Role / Device Role / Timing Role: Primary front-end clamp upstream of DC-DC converter, diverting >500 A surge currents away from sensitive regulators. Use Value: Withstands 800 W peak power and 13.8 A IPPM while limiting rail voltage to ≤58.1 V, preserving downstream IC survival. |
Use Scenario: Protecting CC, VBUS, and D+/D- pins of USB-C receptacles in portable medical devices from hot-plug and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance bidirectional clamp on each signal line, placed adjacent to connector to minimize inductance. Use Value: Meets USB-IF ESD requirements with <1.0 µA leakage at 36 V, ensuring no impact on VCONN or PD negotiation timing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMB8J36CAHE3_B/H | Same electrical specs and package, but RoHS-compliant commercial grade (non-AEC-Q101); no halogen-free certification. | Lacks automotive qualification; suitable for industrial or consumer applications where AEC-Q101 is not mandated. | Select when cost sensitivity outweighs automotive qualification requirements and halogen-free compliance is optional. |
| SMBJ36CAHM3 | Unqualified variant with identical VWM/VBR/VC ratings but unspecified AEC-Q101 status; may lack full automotive test report documentation. | Used in non-automotive designs where traceability to AEC-Q101 is not contractually required. | Choose only if supply chain validation confirms functional equivalence and long-term availability matches SMB8J36CAHM3_B/H. |
Compared with SMB8J36CAHM3_B/H, SMB8J36CAHE3_B/H offers identical surge performance without AEC-Q101 or halogen-free assurance, while SMBJ36CAHM3 lacks documented automotive qualification-making SMB8J36CAHM3_B/H the sole choice for production automotive systems requiring both certifications.
Availability
SMB8J36CAHM3_B/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial CAN bus nodes, and USB-C port protection requiring stable component supply, AEC-Q101 compliance, and halogen-free material content.
Supply support for SMB8J36CAHM3_B/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, rectifiers, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SMB8JxxCA series targets high-reliability transient suppression in harsh environments, with design focus on automotive-grade surge immunity, low-profile SMT integration, and consistent clamping performance across temperature.
FAQ
What is the clamping voltage of SMB8J36CAHM3_B/H at its rated peak pulse current?
The SMB8J36CAHM3_B/H clamps to a maximum of 58.1 V when subjected to its rated 13.8 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured at the device terminals and defines the upper voltage limit imposed on the protected circuit during surge events, ensuring downstream components remain within safe operating limits.
Is SMB8J36CAHM3_B/H suitable for automotive applications?
Yes, SMB8J36CAHM3_B/H is AEC-Q101 qualified and specifically designated for automotive use with suffix "HM3_B/H", indicating halogen-free, RoHS-compliant, and automotive-grade reliability. It has passed stress tests including temperature cycling, high-temperature reverse bias, and ESD per AEC-Q101 Rev D, making it appropriate for engine control, body electronics, and ADAS subsystems.
What is the difference between SMB8J36CAHM3_B/H and SMB8J36CAHE3_B/H?
SMB8J36CAHM3_B/H and SMB8J36CAHE3_B/H share identical electrical specifications and SMB package, but differ in qualification: HM3 denotes halogen-free + AEC-Q101, while HE3 denotes RoHS-compliant + AEC-Q101 without halogen-free certification. The "_B/H" suffix indicates 7" tape-and-reel packaging with 750-unit quantity.
Does SMB8J36CAHM3_B/H require polarity-aware PCB layout?
No, SMB8J36CAHM3_B/H is a bidirectional TVS diode with symmetrical terminal construction and no polarity marking. Its electrical behavior is identical in both directions, so PCB layout does not require anode/cathode orientation-either terminal may connect to the line being protected and the other to ground or reference plane.
What is the maximum operating temperature for SMB8J36CAHM3_B/H?
The SMB8J36CAHM3_B/H has a maximum junction temperature (TJ max.) of +150 °C and an operating junction/storage temperature range of -55 °C to +150 °C. This rating enables use in under-hood automotive locations and industrial enclosures where ambient temperatures exceed 105 °C, provided thermal design meets the 72 °C/W RθJA specification with recommended copper pad layout.
SMB8J36CAHM3_B/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 36V
- Voltage - Breakdown (Min):
- 40V
- Voltage - Clamping (Max) @ Ipp:
- 36V
- Current - Peak Pulse (10/1000µs):
- 13.8A
- 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)
SMB8J36CAHM3_B/H FAQ
1.How can I place an order for SMB8J36CAHM3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB8J36CAHM3_B/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 SMB8J36CAHM3_B/H reliable?
The price and inventory of SMB8J36CAHM3_B/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB8J36CAHM3_B/H is usually 5 days.
3.What payment methods are accepted for SMB8J36CAHM3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB8J36CAHM3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB8J36CAHM3_B/H?
SMB8J36CAHM3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB8J36CAHM3_B/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 SMB8J36CAHM3_B/H?
For technical support, including SMB8J36CAHM3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB8J36CAHM3_B/H requirements.
6.How does Aetrix verify that SMB8J36CAHM3_B/H is sourced from the original manufacturer or authorized distributors?
All SMB8J36CAHM3_B/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 SMB8J36CAHM3_B/H meets industry standards.
7.What is the process for return or replacement of SMB8J36CAHM3_B/H?
All SMB8J36CAHM3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with SMB8J36CAHM3_B/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 SMB8J36CAHM3_B/H part is unused and in its original packaging.
Return procedure for SMB8J36CAHM3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB8J36CAHM3_B/H Tags
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