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Vishay General Semiconductor - Diodes Division SMBJ5.0CAHM3_B/H
- Part No.:
- SMBJ5.0CAHM3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ5.0CAHM3_B/H.pdf
- Description:
- 600W,5.0V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:2,816
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Product details
Overview
SMBJ5.0CAHM3_B/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on signal and power lines. It features 5.0 V stand-off voltage (VWM), 6.4–7.25 V breakdown voltage (VBR), 600 W peak pulse power (10/1000 µs), <1 µA reverse leakage at VWM, and clamps to ≤9.2 V at 65.2 A peak surge current - deployed in sensor interface protection and DC power rail conditioning.
For engineers reviewing the SMBJ5.0CAHM3_B/H datasheet, SMBJ5.0CAHM3_B/H pinout, SMBJ5.0CAHM3_B/H application, or SMBJ5.0CAHM3_B/H equivalent, this page delivers verified electrical parameters, bidirectional clamping behavior, thermal resistance (RθJA = 100 °C/W), AEC-Q101 qualification status, and halogen-free RoHS-compliant construction per JESD201 Class 2 whisker testing.
Technical Context
This TVS operates symmetrically in both directions, with identical VBR min/max (6.4 V / 7.25 V at 10 mA), clamping voltage VC ≤ 9.2 V at IPPM = 65.2 A, and low incremental surge resistance enabling fast transient suppression. Its glass-passivated junction ensures stable breakdown characteristics across temperature.
The device is rated for TJ = –55 °C to +150 °C, derates linearly above TA = 25 °C per Fig. 2, and meets MSL Level 1 (260 °C peak reflow). Polarity-unmarked SMB package supports automated placement and requires no orientation alignment for bidirectional use.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 5.0 V - Maximum continuous reverse operating voltage before significant leakage; defines safe DC bias margin for protected line. |
| VBR (min/max) | 6.4 V / 7.25 V at IT = 10 mA - Confirmed bidirectional breakdown window; ensures reliable triggering without premature conduction. |
| VC @ IPPM | ≤9.2 V at 65.2 A - Clamped voltage during 10/1000 µs surge; guarantees downstream ICs see <9.2 V under worst-case 600 W transient. |
| PPPM | 600 W - Peak pulse power handling per 10/1000 µs waveform; supports repetitive surges at 0.01% duty cycle. |
| ID @ VWM | <1 µA - Reverse leakage current at stand-off voltage; minimizes standby power loss and avoids false triggering. |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance on 0.2" × 0.2" copper pads; informs PCB thermal design for sustained surge duty. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD; suffix HM3 denotes halogen-free compliance. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, unmarked bidirectional configuration - no cathode/anode polarity marking required. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H), matte tin-plated leads solderable per J-STD-002/JESD22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (one direction) | Accepts positive-going surge relative to cathode; bidirectional symmetry means either terminal serves as anode or cathode depending on polarity of transient. |
| Cathode | Transient current exit (opposite direction) | Completes low-impedance path during negative-going surge; functionally interchangeable with anode due to symmetrical construction. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR and VC in both polarities - eliminates need for polarity-aware layout or external series components in AC-coupled or floating lines. |
| 600 W peak pulse rating | Handles IEC 61000-4-5 Level 4 surges (4 kV, 2 Ω source) on 12 V systems without degradation when properly mounted. |
| Halogen-free & RoHS-compliant (HM3) | Meets JESD201 Class 2 whisker resistance and UL 94 V-0 flammability - suitable for automotive and industrial environments with strict material compliance. |
| Low clamping voltage (VC ≤ 9.2 V) | Protects 5 V logic interfaces (e.g., UART, CAN, I²C) by limiting transient overvoltage below absolute maximum ratings of common microcontrollers. |
| AEC-Q101 qualified | Validated for automotive powertrain and body electronics - includes HTGB, TC, and H3TRB testing per stress test conditions defined in AEC standard. |
Applications
| Automotive Sensor Interface Protection | Industrial PLC Digital Input Protection |
|---|---|
|
Use Scenario: Protecting analog/digital sensor outputs (e.g., pressure, temperature) from load dump and inductive switching transients in 12 V vehicle subsystems. IC Role / Device Role / Timing Role: Bidirectional TVS placed between sensor output line and ground, clamping ± transients before they reach ADC input or microcontroller GPIO. Use Value: Prevents latch-up or permanent damage to 5 V-tolerant sensor signal conditioners by limiting voltage excursions to ≤9.2 V during 65.2 A surges. |
Use Scenario: Shielding 24 V digital input channels on programmable logic controllers from field-wiring induced surges and relay coil flyback. IC Role / Device Role / Timing Role: Standoff-rated TVS connected across input terminals to shunt transient energy away from optocoupler input stage and upstream protection circuitry. Use Value: Maintains functional integrity of PLC input stage under repeated 1 kV/0.5 J surges per IEC 61000-4-4, enabled by 600 W pulse rating and low Rsurge. |
| USB Port ESD & Surge Protection | DC Power Rail Conditioning (5 V) |
|
Use Scenario: Secondary-level protection on USB 2.0 data lines (D+/D−) against contact ESD (±15 kV) and system-level surges in embedded host devices. IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS placed differential across D+/D−, leveraging symmetrical clamping to preserve signal integrity during fast transients. Use Value: Limits voltage swing to <9.2 V while adding <0.5 pF capacitance per line - avoids signal distortion and maintains USB full-speed timing margins. |
Use Scenario: Safeguarding 5 V supply rails feeding FPGAs, microcontrollers, or memory in industrial control modules exposed to 12/24 V backplane coupling. IC Role / Device Role / Timing Role: TVS connected between VCC and GND to clamp overvoltage events caused by hot-swap insertion, capacitive discharge, or nearby relay switching. Use Value: Ensures regulated 5 V rail stays within ±10% tolerance during 600 W transients, preventing brownout resets or internal LDO saturation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ5.0CAHE3_B/H | Same electrical specs, but RoHS-compliant (E3) without halogen-free certification; not qualified to AEC-Q101. | Approved for commercial/industrial use only; excluded from automotive production where halogen-free or AEC-Q101 is mandated. | Select SMBJ5.0CAHE3_B/H only if halogen-free content and automotive qualification are not required. |
| SMAJ5.0CA | Lower PPPM (400 W), larger VBR spread (6.4–8.0 V), higher VC (11.2 V at 35.3 A), SMA package (smaller thermal mass). | Limited to lower-energy transients; unsuitable for IEC 61000-4-5 Level 4 or high-repetition surge environments. | Choose SMAJ5.0CA only for space-constrained designs accepting reduced surge robustness and higher clamping voltage. |
Compared with SMBJ5.0CAHE3_B/H, the SMBJ5.0CAHM3_B/H adds halogen-free construction and AEC-Q101 qualification without sacrificing clamping performance; versus SMAJ5.0CA, it delivers 50% higher surge power handling and 2.0 V lower clamping voltage - critical for protecting modern 5 V logic interfaces.
Availability
SMBJ5.0CAHM3_B/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC inputs, USB port protection, and 5 V DC power rail conditioning requiring stable component supply, long-term lifecycle support, and traceable halogen-free sourcing.
Supply support for SMBJ5.0CAHM3_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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, efficiency, and application-specific optimization.
The SMBJ series targets high-energy transient suppression in automotive, industrial, and telecom infrastructure - engineered for robust clamping, low thermal resistance, and compliance with AEC-Q101 and RoHS/halogen-free mandates.
FAQ
What is the breakdown voltage range of SMBJ5.0CAHM3_B/H?
The SMBJ5.0CAHM3_B/H has a bidirectional breakdown voltage (VBR) range of 6.4 V to 7.25 V at 10 mA test current, per Vishay Document 88392 Rev. 09-Jan-2024. This narrow window ensures consistent turn-on behavior across production lots and temperature, making SMBJ5.0CAHM3_B/H suitable for precision 5 V system protection where over-clamping must be avoided.
Is SMBJ5.0CAHM3_B/H qualified for automotive applications?
Yes, SMBJ5.0CAHM3_B/H is AEC-Q101 qualified and carries the HM3 suffix indicating halogen-free, RoHS-compliant construction validated for automotive use. It passes stress tests including high-temperature reverse bias (HTRB), temperature cycling (TC), and unbiased highly accelerated stress testing (UHAST), confirming suitability for under-hood and body electronics applications.
What is the maximum clamping voltage for SMBJ5.0CAHM3_B/H at rated surge current?
The SMBJ5.0CAHM3_B/H clamps to a maximum of 9.2 V at its rated peak pulse current of 65.2 A (10/1000 µs waveform). This value is measured under standardized test conditions with 0.2" × 0.2" copper pads and confirms that downstream 5 V logic circuits remain within safe operating limits during worst-case surge events.
Does SMBJ5.0CAHM3_B/H require polarity-aware PCB layout?
No - SMBJ5.0CAHM3_B/H is a bidirectional TVS with no polarity marking on the SMB (DO-214AA) package. Its symmetrical structure allows installation in either orientation, simplifying automated assembly and eliminating risk of reverse placement errors in AC-coupled or floating signal paths.
How does SMBJ5.0CAHM3_B/H differ from unidirectional SMBJ5.0A variants?
Unlike unidirectional SMBJ5.0A, the SMBJ5.0CAHM3_B/H provides identical clamping in both directions, with no cathode band marking and no forward voltage drop specification. It replaces two unidirectional devices in differential or AC applications and avoids rectification effects that could distort signal waveforms or bias sensitive analog stages.
SMBJ5.0CAHM3_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):
- 5V
- Voltage - Breakdown (Min):
- 6.4V
- Voltage - Clamping (Max) @ Ipp:
- 9.2V
- Current - Peak Pulse (10/1000µs):
- 65.2A
- Power - Peak Pulse:
- 600W
- 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)
SMBJ5.0CAHM3_B/H FAQ
1.How can I place an order for SMBJ5.0CAHM3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ5.0CAHM3_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 SMBJ5.0CAHM3_B/H reliable?
The price and inventory of SMBJ5.0CAHM3_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 SMBJ5.0CAHM3_B/H is usually 5 days.
3.What payment methods are accepted for SMBJ5.0CAHM3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ5.0CAHM3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ5.0CAHM3_B/H?
SMBJ5.0CAHM3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ5.0CAHM3_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 SMBJ5.0CAHM3_B/H?
For technical support, including SMBJ5.0CAHM3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ5.0CAHM3_B/H requirements.
6.How does Aetrix verify that SMBJ5.0CAHM3_B/H is sourced from the original manufacturer or authorized distributors?
All SMBJ5.0CAHM3_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 SMBJ5.0CAHM3_B/H meets industry standards.
7.What is the process for return or replacement of SMBJ5.0CAHM3_B/H?
All SMBJ5.0CAHM3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ5.0CAHM3_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 SMBJ5.0CAHM3_B/H part is unused and in its original packaging.
Return procedure for SMBJ5.0CAHM3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ5.0CAHM3_B/H Tags
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Diodes Incorporated
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