My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMB8J5.0CAHM3_B/I
- Part No.:
- SMB8J5.0CAHM3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB8J5.0CAHM3_B/I.pdf
- Description:
- 800W,5.0V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:9,119
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMB8J5.0CAHM3_B/I 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 5.0 V stand-off voltage (VWM), 9.2 V maximum clamping voltage (VC) at 2000 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 SMB8J5.0CAHM3_B/I datasheet, SMB8J5.0CAHM3_B/I pinout, SMB8J5.0CAHM3_B/I application, or SMB8J5.0CAHM3_B/I equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, low clamping ratio (VC/VWM = 1.84), MSL Level 1 moisture sensitivity, and halogen-free RoHS compliance per HM3 suffix.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector, responding within <1 ps to transients exceeding its breakdown threshold (VBR min = 6.40 V, max = 7.25 V at 10 mA). Its glass-passivated junction ensures stable avalanche characteristics and low incremental surge resistance, enabling consistent clamping under repetitive surges up to 150 °C junction temperature.
The device complies with ANSI/IEEE C62.35 standards for transient suppression and meets AEC-Q101 stress test requirements for automotive electronics. Its bidirectional symmetry allows use on AC-coupled or floating lines without polarity concerns, and its thermal resistance (RθJL = 20 °C/W) supports reliable power dissipation when mounted on 5.0 mm × 5.0 mm copper pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 5.0 V - Maximum continuous reverse operating voltage before conduction begins; defines safe operating margin below clamping onset. |
| VBR (min/max) | 6.40 V / 7.25 V at 10 mA - Breakdown voltage range confirming robust avalanche initiation across production lot. |
| VC @ IPPM | 9.2 V at 2000 A - Clamping voltage under full-rated 10/1000 µs surge; limits downstream voltage stress during worst-case transients. |
| PPPM | 800 W - Peak pulse power handling capacity; determines survivability against ISO 7637-2 Pulse 5a/b or IEC 61000-4-5 combination wave surges. |
| ID @ VWM | 2000 µA max - Reverse leakage at stand-off voltage; ensures minimal quiescent power loss and signal integrity in high-impedance circuits. |
| TJ max | +150 °C - Maximum junction temperature rating; enables operation in under-hood automotive environments and industrial enclosures. |
| Package | SMB (DO-214AA) - Surface-mount outline with 2.20 mm height and 5.59 mm length; compatible with standard SMT pick-and-place and reflow profiles (peak 260 °C). |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional device with no polarity marking; cathode band absent per bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Terminal 1) | Surge return path (bidirectional) | Connects to protected line; conducts during positive or negative overvoltage events relative to reference. |
| Cathode (Terminal 2) | Surge return path (bidirectional) | Connects to system ground or common reference; completes low-impedance shunt path for both polarities of transient energy. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, ADAS sensors, and infotainment power rails per stress test requirements. |
| Halogen-free & RoHS-compliant (HM3) | Meets environmental compliance mandates for Tier-1 automotive supply chains and industrial export markets. |
| MSL Level 1 (260 °C peak) | Enables single-reflow assembly without baking; eliminates moisture-related popcorning risk during manufacturing. |
| Low clamping ratio (VC/VWM = 1.84) | Minimizes voltage overshoot during surge events, protecting 5 V logic interfaces and analog front-ends with tight tolerance margins. |
| Glass-passivated junction | Ensures long-term stability of breakdown voltage and leakage performance across temperature and lifetime cycling. |
Applications
| Automotive Sensor Protection | Industrial CAN Bus Interface |
|---|---|
Use Scenario: Protecting LIN/CAN transceiver inputs and analog sensor outputs (e.g., pressure, temperature) from load dump and ESD in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional shunt clamp absorbing ±1000 V/500 A transients while maintaining signal integrity during normal operation. Use Value: Prevents latch-up or permanent damage to 5 V tolerant transceivers and ADC inputs by limiting voltage excursion to ≤9.2 V during surge events. | Use Scenario: Safeguarding differential CAN H/L lines in factory automation controllers exposed to motor switching noise and lightning-induced surges. IC Role / Device Role / Timing Role: Common-mode transient suppressor placed across bus pair to clamp differential and common-mode spikes simultaneously. Use Value: Maintains CAN FD signal fidelity up to 5 Mbps by minimizing capacitive loading (<100 pF typical) and ensuring fast response (<1 ps) without distorting edge timing. |
| Consumer Power Adapter Input | Telecom DC Power Feed |
Use Scenario: Input-stage surge protection for 5 V USB-C PD adapters subjected to AC line transients and hot-plug induced spikes. IC Role / Device Role / Timing Role: Primary-line TVS on secondary-side DC output, clamping surges before they reach synchronous rectifier MOSFETs and controller ICs. Use Value: Enables compact adapter design by replacing bulkier MOV+TVS stacks with a single 800 W rated device in SMB footprint. | Use Scenario: Overvoltage protection on -48 V DC telecom power feeds entering base station radios and remote radio units (RRUs). IC Role / Device Role / Timing Role: Bidirectional clamp referenced to chassis ground, suppressing both positive and negative surges from induced lightning coupling. Use Value: Survives repeated 10/1000 µs surges up to 2000 A without degradation, supporting 15-year field deployment in outdoor telecom infrastructure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMB8J5.0CAHE3_B/I | RoHS-compliant but not halogen-free; lacks HM3 material certification. | Approved for commercial/industrial use; excluded from automotive programs requiring halogen-free BOMs. | Select when halogen-free requirement is waived and cost optimization is prioritized over automotive qualification. |
| SMAJ5.0CA | Lower PPPM (400 W), smaller SMA package (DO-214AC), higher RθJA (110 °C/W). | Suitable for lower-energy surges (IEC 61000-4-2 only); not rated for ISO 7637-2 Pulse 5 or AEC-Q101. | Choose for space-constrained consumer designs where 800 W surge immunity is not required and automotive qualification is unnecessary. |
Compared with SMB8J5.0CAHM3_B/I, the HE3 variant omits halogen-free compliance and automotive qualification, while the SMAJ5.0CA sacrifices surge rating and thermal performance for footprint reduction - making SMB8J5.0CAHM3_B/I the only option meeting full AEC-Q101, 800 W, and halogen-free requirements in SMB form factor.
Availability
SMB8J5.0CAHM3_B/I is available at Aetrix Electronics and suitable for automotive sensor modules, industrial CAN networks, and telecom DC power systems requiring stable component supply with guaranteed AEC-Q101 compliance and halogen-free materials.
Supply support for SMB8J5.0CAHM3_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, power density, and automotive qualification.
The SMB8J5.0CAHM3_B/I belongs to Vishay's TRANSZORB® family of high-power TVS diodes, engineered specifically for robust transient suppression in harsh automotive and industrial environments where AEC-Q101 validation and repeatable clamping performance are mandatory.
FAQ
What is the clamping voltage of SMB8J5.0CAHM3_B/I at its rated peak pulse current?
The SMB8J5.0CAHM3_B/I has a maximum clamping voltage (VC) of 9.2 V when subjected to its rated peak pulse current of 2000 A using a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and verified across production lots. The low VC ensures protected 5 V circuits remain within safe operating limits during surge events, and the specification is guaranteed in the Vishay datasheet document 88422 revision 09-Jan-2024.
Is SMB8J5.0CAHM3_B/I qualified for automotive applications?
Yes, SMB8J5.0CAHM3_B/I is AEC-Q101 qualified, as confirmed by Vishay's official documentation and ordering code suffix "HM3_B/I", where "HM3" denotes halogen-free, RoHS-compliant, and AEC-Q101 qualified construction. It is approved for use in engine control units, ADAS sensors, and body electronics where automotive-grade reliability and stress testing are mandatory. The qualification covers temperature cycling, humidity bias, and mechanical shock per AEC-Q101 Rev D.
What does the "HM3" suffix mean in SMB8J5.0CAHM3_B/I?
The "HM3" suffix in SMB8J5.0CAHM3_B/I indicates halogen-free, RoHS-compliant construction with AEC-Q101 qualification. Per Vishay's ordering nomenclature, "H" denotes AEC-Q101 qualification, "M3" specifies halogen-free molding compound and matte tin plating compliant with JESD 201 Class 2 whisker resistance. This distinguishes it from "HE3" (AEC-Q101, non-halogen-free) and "E3/M3" (commercial grade only). The full part number SMB8J5.0CAHM3_B/I is traceable to Vishay document 88422.
Can SMB8J5.0CAHM3_B/I be used in bidirectional signal lines like RS-485 or CAN?
Yes, SMB8J5.0CAHM3_B/I is explicitly designed for bidirectional operation and is commonly deployed on differential bus lines such as CAN, RS-485, and LIN. Its symmetrical breakdown (VBR min/max = 6.40 V / 7.25 V) and absence of polarity marking allow direct placement across signal pairs without orientation concern. The device's low capacitance (<100 pF at 0 V) avoids signal integrity degradation at speeds up to 5 Mbps, and its 9.2 V clamping protects transceivers rated for 12 V absolute maximum.
What is the thermal resistance from junction to lead (RθJL) for SMB8J5.0CAHM3_B/I?
The SMB8J5.0CAHM3_B/I has a typical thermal resistance from junction to lead (RθJL) of 20 °C/W, as specified in Vishay document 88422. This parameter reflects efficient heat transfer from the silicon die to the PCB copper via the leads, enabling sustained power dissipation during repetitive surge events. When mounted on 5.0 mm × 5.0 mm copper pads per recommended layout, this RθJL supports reliable operation up to the maximum junction temperature of +150 °C without derating.
SMB8J5.0CAHM3_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):
- 5V
- Voltage - Breakdown (Min):
- 6.4V
- Voltage - Clamping (Max) @ Ipp:
- 5V
- Current - Peak Pulse (10/1000µs):
- 87A
- 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)
SMB8J5.0CAHM3_B/I FAQ
1.How can I place an order for SMB8J5.0CAHM3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB8J5.0CAHM3_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 SMB8J5.0CAHM3_B/I reliable?
The price and inventory of SMB8J5.0CAHM3_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 SMB8J5.0CAHM3_B/I is usually 5 days.
3.What payment methods are accepted for SMB8J5.0CAHM3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB8J5.0CAHM3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB8J5.0CAHM3_B/I?
SMB8J5.0CAHM3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB8J5.0CAHM3_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 SMB8J5.0CAHM3_B/I?
For technical support, including SMB8J5.0CAHM3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB8J5.0CAHM3_B/I requirements.
6.How does Aetrix verify that SMB8J5.0CAHM3_B/I is sourced from the original manufacturer or authorized distributors?
All SMB8J5.0CAHM3_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 SMB8J5.0CAHM3_B/I meets industry standards.
7.What is the process for return or replacement of SMB8J5.0CAHM3_B/I?
All SMB8J5.0CAHM3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with SMB8J5.0CAHM3_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 SMB8J5.0CAHM3_B/I part is unused and in its original packaging.
Return procedure for SMB8J5.0CAHM3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB8J5.0CAHM3_B/I Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
