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Vishay General Semiconductor - Diodes Division SMB8J5.0CAHM3_A/I
- Part No.:
- SMB8J5.0CAHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB8J5.0CAHM3_A/I.pdf
- Description:
- TVS DIODE 5VWM 9.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,684
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Product details
Overview
SMB8J5.0CAHM3_A/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), 6.4–7.25 V breakdown voltage (VBR) at 10 mA, 800 W peak pulse power (10/1000 µs), 2000 A peak pulse current (IPPM), and clamps to ≤9.2 V at rated surge. It is AEC-Q101 qualified and halogen-free, targeting automotive sensor interface and power rail protection.
For engineers reviewing the SMB8J5.0CAHM3_A/I datasheet, SMB8J5.0CAHM3_A/I pinout, SMB8J5.0CAHM3_A/I application, or SMB8J5.0CAHM3_A/I equivalent, key selection criteria include bidirectional clamping capability, MSL Level 1 reflow compatibility, AEC-Q101 qualification status, and verified 800 W surge handling on 5.0 V rails - all critical for automotive-grade ESD and load-dump robustness validation.
Technical Context
This device operates as a voltage-clamped shunt protector: under normal bias (≤5.0 V), leakage remains ≤1000 µA; during transients exceeding VBR (6.4–7.25 V), it avalanches rapidly (<1 ns response) to divert surge current away from downstream ICs. Its bidirectional symmetry enables protection of AC-coupled or differential lines without polarity constraints.
Thermal performance is defined by RθJA = 72 °C/W and RθJL = 20 °C/W, with maximum junction temperature of +150 °C. The glass-passivated junction and matte tin-plated leads meet J-STD-002 solderability and JESD22-B102 whisker resistance Class 2 requirements - essential for automotive reflow and long-term reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 5.0 V - Maximum continuous reverse voltage before significant leakage; defines operating margin for 5 V systems. |
| VBR (min/max) | 6.4 V / 7.25 V at IT = 10 mA - Ensures reliable turn-on above system nominal voltage while avoiding false triggering. |
| VC @ IPPM | ≤9.2 V at IPPM = 2000 A - Clamping voltage limits stress on protected ICs during 800 W surges (10/1000 µs). |
| PPPM | 800 W - Peak pulse power rating per ANSI/IEEE C62.35; validates robustness against ISO 7637-2 Pulse 1/2/5a/b. |
| ID @ VWM | ≤1000 µA - Low leakage preserves signal integrity and battery life in always-on automotive modules. |
| TJ max. | +150 °C - Enables operation in engine bay and powertrain environments without derating. |
| AEC-Q101 | Qualified - Confirmed reliability for automotive electronics per stress test requirements (HTOL, TCT, HTRB, etc.). |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with cathode band marking. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); recommended pad layout: 5.59 mm × 2.18 mm minimum copper area per terminal.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Current entry during positive transients | One side of symmetrical bidirectional structure; connects to line needing protection. |
| Cathode (banded end) | Current entry during negative transients | Other side of symmetrical structure; ties to reference (e.g., ground or complementary rail). |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Protects AC-coupled or floating lines (e.g., CAN, LIN, sensor bridges) without polarity sensitivity. |
| AEC-Q101 qualification | Validated for automotive use - eliminates need for additional qualification testing in Tier-1 designs. |
| Halogen-free & RoHS-compliant (HM3 suffix) | Meets global environmental regulations and OEM material declarations (e.g., IATF 16949 compliance). |
| MSL Level 1, 260 °C peak reflow | Compatible with standard lead-free SMT assembly without moisture sensitivity concerns or baking. |
| Glass-passivated junction | Enhances long-term stability and reduces parameter drift under thermal cycling and humidity stress. |
Applications
| Automotive Sensor Interface | Industrial CAN Bus Protection |
|---|---|
|
Use Scenario: Protecting analog outputs of pressure/temperature sensors in engine control units exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Shunt TVS diode placed across sensor output and ground to clamp transients before they reach ADC input or signal conditioner. Use Value: Limits clamping voltage to ≤9.2 V, preventing damage to 5 V-tolerant op-amps and ensuring signal fidelity during 2000 A surges. |
Use Scenario: Safeguarding CANH/CANL lines in vehicle body control modules subjected to ESD (IEC 61000-4-2) and coupled noise. IC Role / Device Role / Timing Role: Bidirectional TVS placed differentially between CANH and CANL to suppress common-mode and differential transients. Use Value: Symmetrical 6.4–7.25 V breakdown ensures balanced clamping on both lines, preserving CAN signal integrity and bit timing. |
| Power Supply Input Protection | USB Type-C Port ESD Clamp |
|
Use Scenario: Front-end surge suppression on 5 V DC input rails of infotainment head units facing battery reverse connection and jump-start events. IC Role / Device Role / Timing Role: Primary shunt protector mounted directly at connector entry point to absorb energy before DC-DC converters. Use Value: 800 W PPPM rating handles sustained 10/1000 µs surges without degradation, extending system MTBF in harsh electrical environments. |
Use Scenario: ESD protection for USB Type-C CC and VCONN pins in automotive docking stations where space is constrained. IC Role / Device Role / Timing Role: Compact bidirectional TVS integrated into miniaturized port layout to meet IEC 61000-4-2 ±15 kV air/±8 kV contact discharge. Use Value: SMB footprint enables high-density placement; ≤9.2 V VC prevents latch-up in USB PD controllers during fast-rising ESD events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ5.0CA-E3/52 | Unqualified for AEC-Q101; same VWM/VBR/VC but lower PPPM (600 W vs. 800 W). | Restricted to commercial-grade consumer/industrial use; not approved for automotive ECUs. | Select only when AEC-Q101 is not required and surge energy is ≤600 W. |
| SMCJ5.0CAHM3_A/I | Larger SMC (DO-214AB) package; identical electrical specs but higher PPPM (1500 W) and IPPM (3000 A). | Requires larger PCB area; suited for higher-energy zones like battery inputs or alternator lines. | Choose when system-level surge tests exceed 800 W or board layout allows SMC footprint. |
Compared with SMBJ5.0CA-E3/52, SMB8J5.0CAHM3_A/I delivers 33 % higher surge power handling and automotive qualification; versus SMCJ5.0CAHM3_A/I, it trades 37 % lower surge capacity for 40 % smaller PCB area - optimizing cost and space in compact sensor nodes.
Availability
SMB8J5.0CAHM3_A/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial CAN bus nodes, and USB Type-C port protection requiring stable component supply across production lifecycles.
Supply support for SMB8J5.0CAHM3_A/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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and automotive-grade performance.
The SMB8J series belongs to Vishay's TRANSZORB® TVS family, engineered specifically for high-power-density, AEC-Q101-compliant transient suppression in space-constrained automotive and industrial control applications.
FAQ
What is the clamping voltage of SMB8J5.0CAHM3_A/I at its rated peak pulse current?
The SMB8J5.0CAHM3_A/I clamps to a maximum of 9.2 V at its rated peak pulse current of 2000 A (10/1000 µs waveform). This value is measured under standardized test conditions and ensures downstream 5 V ICs remain within safe operating voltage margins during surge events. The SMB8J5.0CAHM3_A/I achieves this with low incremental surge resistance and fast avalanche response.
Is SMB8J5.0CAHM3_A/I suitable for automotive applications?
Yes, SMB8J5.0CAHM3_A/I is AEC-Q101 qualified and manufactured with halogen-free, RoHS-compliant materials (HM3 suffix), making it suitable for automotive applications including engine control, body electronics, and ADAS sensor modules. Its thermal rating (TJ max = +150 °C) and MSL Level 1 reflow compatibility further validate its use in automotive production environments.
How does SMB8J5.0CAHM3_A/I differ from unidirectional variants like SMB10J5.0A?
SMB8J5.0CAHM3_A/I is bidirectional with symmetric breakdown (6.4–7.25 V in both directions), enabling protection of AC or floating lines, whereas SMB10J5.0A is unidirectional (cathode-marked) and only protects against negative transients relative to its anode. SMB8J5.0CAHM3_A/I also has higher IPPM (2000 A vs. 1000 A) and lower PPPM (800 W vs. 1000 W) due to bidirectional design trade-offs.
What is the meaning of the "HM3" and "_A/I" suffixes in SMB8J5.0CAHM3_A/I?
The "HM3" suffix denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification; "_A/I" specifies packaging: "A" is the revision code, and "I" indicates 13-inch tape-and-reel delivery (3200 units per reel). This matches Vishay's ordering convention for automotive-grade parts with full traceability and extended reel format.
Can SMB8J5.0CAHM3_A/I be used in place of SMBJ5.0CA for higher surge protection?
SMB8J5.0CAHM3_A/I provides higher surge capability (800 W PPPM, 2000 A IPPM) than standard SMBJ5.0CA (600 W, 1000 A), but requires verification of layout and thermal dissipation. It is not a drop-in replacement due to differing AEC-Q101 status and revised thermal resistance; however, it is a direct functional upgrade where automotive qualification and enhanced energy handling are needed.
SMB8J5.0CAHM3_A/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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 5V
- Voltage - Breakdown (Min):
- 6.4V
- Voltage - Clamping (Max) @ Ipp:
- 9.2V
- 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_A/I FAQ
1.How can I place an order for SMB8J5.0CAHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB8J5.0CAHM3_A/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_A/I reliable?
The price and inventory of SMB8J5.0CAHM3_A/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_A/I is usually 5 days.
3.What payment methods are accepted for SMB8J5.0CAHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB8J5.0CAHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB8J5.0CAHM3_A/I?
SMB8J5.0CAHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB8J5.0CAHM3_A/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_A/I?
For technical support, including SMB8J5.0CAHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB8J5.0CAHM3_A/I requirements.
6.How does Aetrix verify that SMB8J5.0CAHM3_A/I is sourced from the original manufacturer or authorized distributors?
All SMB8J5.0CAHM3_A/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_A/I meets industry standards.
7.What is the process for return or replacement of SMB8J5.0CAHM3_A/I?
All SMB8J5.0CAHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMB8J5.0CAHM3_A/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_A/I part is unused and in its original packaging.
Return procedure for SMB8J5.0CAHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB8J5.0CAHM3_A/I Tags
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