My Inquiry
My Account
Taiwan Semiconductor Corporation SMBJ6.5H
- Part No.:
- SMBJ6.5H
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ6.5H.pdf
- Description:
- 600W, 8V, UNIDIRECTIONAL, TVS
- Quantity:
- Payment:
- Shipping:
Inventory:4,741
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMBJ6.5H from Taiwan Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in DO-214AA (SMB) package, designed for automotive-grade ESD and surge protection. It features a 6.5 V working stand-off voltage (VWM), 7.22–8.82 V breakdown voltage (VBR), 12.3 V maximum clamping voltage (VC) at 500 A peak pulse current, and 600 W peak pulse power rating per 10/1000 µs waveform - ideal for protecting automotive lighting control modules against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.
For engineers reviewing the SMBJ6.5H datasheet, SMBJ6.5H pinout, SMBJ6.5H application, or SMBJ6.5H equivalent, key selection considerations include its AEC-Q101 qualification, <1 ps response time, <1 µA leakage above 10 V, bidirectional variant availability (SMBJ6.5AH), and compliance with ISO 7637-2 and J-STD-020 moisture sensitivity level 1.
Technical Context
The SMBJ6.5H operates as a unidirectional avalanche diode with glass-passivated junction, enabling fast clamping (<1 ps) of high-energy transients while maintaining low leakage (<1 µA at 6.5 V). Its thermal design supports 150 °C max junction temperature and leverages DO-214AA's 10 °C/W junction-to-case resistance for reliable power dissipation during repetitive surges.
It meets ISO 7637-2 immunity requirements for automotive electronics, including Pulse 1 (inductive load dump suppression), Pulse 2a (battery line interruption), and Pulse 3a/3b (capacitive coupling transients), with clamping performance validated under standardized 10/1000 µs surge waveforms.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 6.5 V - maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 7.22 V / 8.82 V - guaranteed avalanche breakdown range at 10 mA test current |
| VC @ IPP | 12.3 V at 500 A - maximum clamped voltage during 10/1000 µs surge, limiting downstream IC stress |
| PPK | 600 W - peak pulse power handling capability per single 10/1000 µs transient |
| ID @ VWM | <1 µA - ultra-low leakage ensures minimal standby power loss in battery-critical systems |
| TJ max | +150 °C - enables operation in under-hood automotive environments without derating |
| Package | DO-214AA (SMB) - industry-standard surface-mount outline compatible with automated placement |
Pinout & Package
DO-214AA (SMB) package with cathode band marking on one end; two-terminal device with anode and cathode leads. Matte tin-plated terminals ensure solderability per J-STD-002 and whisker resistance per JESD 201 Class 2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; connected to protected circuit ground | Provides low-impedance path to ground during transient clamping events |
| Cathode | Current exit point in forward bias; connected to protected line (e.g., CAN_H, LIN, LED supply) | Defines polarity-sensitive clamping direction - blocks normal operation voltage but conducts during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive use across temperature, humidity, and mechanical stress tests per JEDEC standard |
| Glass-passivated junction | Enhances long-term reliability and stability of breakdown voltage under thermal cycling |
| Clamping voltage ≤12.3 V at 500 A | Ensures protected ICs (e.g., microcontrollers, drivers) remain below absolute maximum ratings during surge events |
| Response time <1 ps | Activates before most system-level transients can propagate, minimizing voltage overshoot |
| Moisture sensitivity level 1 | Eliminates need for baking prior to reflow, supporting direct SMT assembly without process interruption |
Applications
| Automotive Lighting Control | Body Control Module (BCM) Power Input |
|---|---|
Use Scenario: Protecting LED driver ICs and MOSFETs in headlamp control units from load-dump spikes and ESD events during vehicle start-stop cycles. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and input stage to clamp transients before they reach sensitive analog/digital circuitry. Use Value: Limits clamped voltage to 12.3 V, preventing damage to 12 V-rated logic inputs and ensuring functional safety compliance per ISO 26262 ASIL-B subsystems. | Use Scenario: Safeguarding 5 V/3.3 V regulator inputs in BCMs exposed to ISO 7637-2 Pulse 1 (−100 V, 40 ms) and Pulse 2a (+100 V, 50 ms) transients. IC Role / Device Role / Timing Role: Primary front-end surge suppressor on main 12 V supply line, absorbing up to 600 W of transient energy in <1 ps. Use Value: Enables robust operation without external crowbar circuits or redundant protection stages, reducing BOM count and PCB area. |
| Infotainment System USB Port | Electric Power Steering (EPS) Sensor Interface |
Use Scenario: ESD protection for USB 2.0 data lines and VBUS in automotive infotainment head units subjected to IEC 61000-4-2 ±15 kV contact discharge. IC Role / Device Role / Timing Role: Bidirectional-capable variant (SMBJ6.5AH) used across D+ and D− lines to clamp both polarities while preserving signal integrity. Use Value: Junction capacitance <100 pF at 0 V (per Fig.5) avoids USB 2.0 eye diagram degradation, maintaining 480 Mbps signaling fidelity. | Use Scenario: Transient suppression on analog sensor supply rails (e.g., torque sensor VDD) in EPS ECUs exposed to inductive switching noise from motor drivers. IC Role / Device Role / Timing Role: Low-leakage (≤1 µA at 6.5 V) TVS placed directly at sensor IC power pins to prevent false readings or latch-up during PWM-induced ringing. Use Value: Prevents >12.3 V excursions that could exceed sensor IC absolute maximum ratings, eliminating field failures linked to intermittent calibration drift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ6.5AH | Bidirectional configuration; same VWM (6.5 V), slightly lower VC (11.2 V at 500 A), identical package and AEC-Q101 qualification | Required where differential or AC-coupled signals (e.g., LIN bus, CAN FD stubs) need symmetrical clamping | Select SMBJ6.5AH when protecting bidirectional communication lines; SMBJ6.5H remains optimal for DC power rail protection |
| SMAJ6.5A | Lower PPK (400 W vs. 600 W); SMA package (DO-214AC) with higher RθJA (85 °C/W vs. 55 °C/W); same VWM and VBR range | Suitable for non-automotive industrial controls with lower surge severity and less stringent thermal constraints | Choose SMAJ6.5A only if space or cost constraints outweigh need for 600 W surge margin and AEC-Q101 validation |
Compared with SMBJ6.5AH and SMAJ6.5A, the SMBJ6.5H delivers superior surge robustness (600 W), automotive-grade reliability (AEC-Q101 + ISO 7637-2), and optimized thermal performance (55 °C/W RθJA) - making it the preferred choice for safety-critical 12 V rail protection in modern vehicles.
Availability
SMBJ6.5H is available at Aetrix Electronics and suitable for automotive lighting control, body control module (BCM) power inputs, and electric power steering (EPS) sensor interfaces requiring stable component supply, AEC-Q101 compliance, and ISO 7637-2 transient immunity.
Supply support for SMBJ6.5H 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated semiconductor manufacturer specializing in discrete power devices, TVS diodes, rectifiers, and MOSFETs, with global distribution and AEC-Q101-qualified product lines.
The SMBJH series was developed specifically for automotive electronics protection, targeting ISO 7637-2 compliance, high-reliability packaging, and robust clamping performance in under-hood and cabin environments.
FAQ
What is the maximum clamping voltage of SMBJ6.5H under standard surge conditions?
The SMBJ6.5H has a maximum clamping voltage (VC) of 12.3 V when subjected to a 500 A peak impulse current with a 10/1000 µs waveform. This value is measured at TA = 25°C and ensures protected downstream components remain within safe operating limits during automotive load-dump and ESD events. The SMBJ6.5H maintains this clamping performance across its full operating temperature range.
Is SMBJ6.5H qualified for automotive applications?
Yes, SMBJ6.5H is AEC-Q101 qualified and explicitly designed for automotive use. It meets ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b transient immunity requirements, supports junction temperatures up to +150 °C, and complies with J-STD-020 moisture sensitivity level 1 - confirming suitability for under-hood and cabin electronics without pre-baking.
How does SMBJ6.5H differ from SMBJ6.5AH?
SMBJ6.5H is unidirectional, while SMBJ6.5AH is bidirectional - meaning SMBJ6.5AH clamps transients of either polarity, whereas SMBJ6.5H only clamps positive-going surges on the cathode side. Both share identical VWM (6.5 V), VBR range (7.22–8.82 V), and DO-214AA package, but SMBJ6.5AH exhibits a lower VC (11.2 V at 500 A) due to symmetrical junction design. The SMBJ6.5H remains optimal for DC power rail protection.
What is the leakage current specification for SMBJ6.5H at its working voltage?
At its rated working stand-off voltage of 6.5 V, the SMBJ6.5H exhibits a maximum blocking leakage current (ID) of less than 1 µA at TA = 25°C. This ultra-low leakage minimizes quiescent power loss in always-on automotive systems such as telematics and alarm controllers, supporting extended battery life and regulatory compliance for low-power modes.
Can SMBJ6.5H be used in place of SMAJ6.5A?
SMBJ6.5H is not a drop-in replacement for SMAJ6.5A due to differences in package (DO-214AA vs. DO-214AC), thermal resistance (55 °C/W vs. 85 °C/W), and peak power rating (600 W vs. 400 W). While both share VWM and VBR ranges, the SMBJ6.5H offers superior surge capability and AEC-Q101 qualification - making it suitable for automotive applications where SMAJ6.5A may be limited to industrial or consumer use.
SMBJ6.5H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AA, SMB
- Series:
- SMBJH
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 6.5V
- Voltage - Breakdown (Min):
- 7.22V
- Voltage - Clamping (Max) @ Ipp:
- 12.3V
- Current - Peak Pulse (10/1000µs):
- 51A
- Power - Peak Pulse:
- 600W
- 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)
SMBJ6.5H FAQ
1.How can I place an order for SMBJ6.5H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ6.5H 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 SMBJ6.5H reliable?
The price and inventory of SMBJ6.5H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ6.5H is usually 5 days.
3.What payment methods are accepted for SMBJ6.5H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ6.5H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ6.5H?
SMBJ6.5H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ6.5H 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 SMBJ6.5H?
For technical support, including SMBJ6.5H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ6.5H requirements.
6.How does Aetrix verify that SMBJ6.5H is sourced from the original manufacturer or authorized distributors?
All SMBJ6.5H 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 SMBJ6.5H meets industry standards.
7.What is the process for return or replacement of SMBJ6.5H?
All SMBJ6.5H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ6.5H, 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 SMBJ6.5H part is unused and in its original packaging.
Return procedure for SMBJ6.5H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ6.5H 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
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 …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
