My Inquiry
My Account
Vishay General Semiconductor - Diodes Division TPSMB30-12HE3_A/I
- Part No.:
- TPSMB30-12HE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
TPSMB30-12HE3_A/I.pdf
- Description:
- TVS DIODE 600W SMB DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,231
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPSMB30-12HE3_A/I from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) designed for clamping inductive switching surges and lightning-induced transients on power rails and signal lines. It features a 30 V breakdown voltage (VBR = 28.5–31.5 V), 25.6 V stand-off voltage (VWM), 600 W peak pulse power (10/1000 µs), 14.5 A peak pulse current (IPPM), and 41.4 V maximum clamping voltage (VC) - deployed in automotive engine control units, industrial PLC I/O protection, and telecom power supply input stages.
For engineers reviewing the TPSMB30-12HE3_A/I datasheet, TPSMB30-12HE3_A/I pinout, TPSMB30-12HE3_A/I application, or TPSMB30-12HE3_A/I equivalent, key selection criteria include unidirectional polarity, SMB (DO-214AA) package compatibility, AEC-Q101 qualification status, TJ = 185 °C junction rating, and clamping performance under repetitive 10/1000 µs surge conditions.
Technical Context
This TVS diode operates as a voltage-clamping protection device in parallel with sensitive circuitry, activating when transient voltage exceeds its breakdown threshold. Its passivated anisotropic rectifier structure ensures stable VBR drift (αT = 0.088 %/°C) and low incremental surge resistance across -65 °C to +185 °C operating range.
It delivers 600 W peak pulse power per 10/1000 µs waveform at TA = 25 °C, derated linearly above that temperature, and supports 75 A non-repetitive forward surge current (8.3 ms half-sine). The device meets MSL Level 1 (260 °C reflow) and is qualified to AEC-Q101 for automotive use.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 28.5 V / 30.0 V / 31.5 V - precise breakdown threshold enabling reliable overvoltage triggering before downstream IC damage |
| VWM | 25.6 V - maximum continuous reverse working voltage; sets safe DC operating margin below VBR |
| VC @ IPPM | 41.4 V - clamped voltage during 14.5 A transient; defines worst-case stress on protected load |
| PPPM | 600 W - peak surge energy handling capacity under standardized 10/1000 µs waveform |
| IFSM | 75 A - single-cycle surge current limit (8.3 ms half-sine); critical for motor driver or relay coil snubbing |
| TJ max. | +185 °C - extended junction temperature rating enables placement near high-power components without derating |
| Polarity | Unidirectional - protects against positive-going transients only; requires correct cathode orientation in PCB layout |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, matte tin-plated leads, RoHS-compliant and AEC-Q101 qualified (HE3 suffix). Cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Anode of internal PN junction | Connected to higher-potential side of protected line; conducts during positive transients |
| Anode | Cathode of internal PN junction | Connected to ground or lower-potential reference; completes clamping path during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation optimized design | Stable VBR drift ≤ ±5 % over lifetime and temperature; eliminates parameter shift in harsh environments |
| AEC-Q101 qualification | Validated reliability for automotive powertrain and body electronics; includes HTGB, TC, HTRB, and UHAST testing |
| MSL Level 1 (260 °C) | Compatible with standard lead-free reflow profiles without preconditioning or baking |
| Low incremental surge resistance | Enables tighter VC – VBR differential (11.4 V headroom), reducing protected circuit stress |
| 10/1000 µs waveform compliance | Meets IEC 61000-4-5 Level 4 surge immunity requirements for industrial and automotive applications |
Applications
| Automotive Power Supply Protection | Industrial PLC Digital Input Protection |
|---|---|
|
Use Scenario: Suppresses load-dump transients (up to 35 V, 100 ms) and alternator ripple spikes on 12 V battery-fed ECUs. IC Role / Device Role / Timing Role: Parallel-connected clamping device placed between VBAT and GND, activated within <1 ns of overvoltage onset. Use Value: Limits voltage seen by LDOs and microcontrollers to ≤41.4 V, preventing latch-up or oxide breakdown in 3.3 V/5 V logic. |
Use Scenario: Protects 24 V digital input channels in programmable logic controllers from field-wiring induced surges and ESD. IC Role / Device Role / Timing Role: Standoff-rated TVS placed upstream of optocoupler input, conducting only during >25.6 V transients. Use Value: Maintains 24 V nominal operation while clamping 1 kV/500 A surges to <42 V, preserving input stage integrity over 100,000+ cycles. |
| Telecom AC-DC Adapter Input Stage | Consumer Appliance Motor Driver Snubber |
|
Use Scenario: Shields primary-side controller ICs in offline SMPS from line surge events (IEC 61000-4-5) and lightning-induced ring waves. IC Role / Device Role / Timing Role: Fast-response shunt element across bulk capacitor input, triggered at 30 V to divert surge energy to ground. Use Value: Achieves sub-42 V clamping at 14.5 A, allowing use of 50 V-rated electrolytics and eliminating need for series fusing in cost-sensitive designs. |
Use Scenario: Absorbs back-EMF from brushed DC motors in washing machines and HVAC blowers during PWM commutation. IC Role / Device Role / Timing Role: Unidirectional clamp across motor terminals, conducting only during positive flyback spikes. Use Value: Handles 75 A single-pulse surges (8.3 ms) without degradation, extending MOSFET lifespan and eliminating gate-oxide failure modes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ30A | Same VWM/VBR/VC, but rated for 400 W PPPM; SMB package identical; not AEC-Q101 qualified | Limited to commercial/industrial use; unsuitable for automotive under-hood deployment | Select SMAJ30A only for cost-sensitive non-automotive applications where 400 W surge rating suffices |
| TPSMB30AHM3_A/I | Identical electrical specs and AEC-Q101 qualification; halogen-free molding compound (HM3 vs HE3) | Required for RoHS-compliant, halogen-free BOMs in EU automotive programs | Choose TPSMB30AHM3_A/I when halogen-free compliance is mandated by OEM tier-1 specifications |
Compared with SMAJ30A and TPSMB30AHM3_A/I, the TPSMB30-12HE3_A/I provides AEC-Q101 qualification and 600 W surge capability in the same SMB footprint - making it the preferred choice for automotive-grade 12 V system protection where both reliability and power handling are critical.
Availability
TPSMB30-12HE3_A/I is available at Aetrix Electronics and suitable for automotive ECU power rail protection, industrial PLC I/O conditioning, and telecom AC-DC adapter input stages requiring stable component supply, long-term lifecycle support, and AEC-Q101 traceability.
Supply support for TPSMB30-12HE3_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 high-reliability diodes, rectifiers, and protection devices for demanding environments.
The TPSMB30-12HE3_A/I belongs to Vishay's PAR® TVS family, engineered specifically for robust transient suppression in automotive, industrial, and telecom systems where high-temperature stability and AEC-Q101 compliance are mandatory.
FAQ
What is the exact breakdown voltage range for TPSMB30-12HE3_A/I?
The TPSMB30-12HE3_A/I has a guaranteed breakdown voltage (VBR) range of 28.5 V to 31.5 V at 1 mA test current, with a nominal value of 30.0 V. This specification is verified per ANSI/IEEE C62.35 and measured after 300 µs square-wave pulse application, ensuring consistent triggering behavior across production lots and temperature extremes.
Is TPSMB30-12HE3_A/I AEC-Q101 qualified?
Yes, TPSMB30-12HE3_A/I is fully AEC-Q101 qualified. The HE3 suffix explicitly denotes RoHS-compliant and AEC-Q101 qualified construction, validated through high-temperature reverse bias, temperature cycling, and unbiased highly accelerated stress testing per the AEC standard - confirming suitability for automotive powertrain and chassis applications.
What does the "-12" in TPSMB30-12HE3_A/I signify?
The "-12" in TPSMB30-12HE3_A/I is a Vishay internal revision code indicating the specific manufacturing lot or process iteration, not a functional variant. All electrical and mechanical specifications for TPSMB30-12HE3_A/I match those published for the base TPSMB30A device in Document Number 88406, Revision 23-Jan-2024.
Can TPSMB30-12HE3_A/I replace SMAJ30A in existing designs?
TPSMB30-12HE3_A/I shares the same SMB (DO-214AA) package and pinout as SMAJ30A and offers superior 600 W surge rating versus 400 W, but it is not a drop-in replacement unless AEC-Q101 qualification and higher power handling are confirmed as required. Layout changes are unnecessary, but validation of thermal and clamping performance under actual surge conditions is recommended.
What is the maximum clamping voltage of TPSMB30-12HE3_A/I at rated surge current?
The TPSMB30-12HE3_A/I exhibits a maximum clamping voltage (VC) of 41.4 V when subjected to its rated 14.5 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured at TA = 25 °C and defines the upper voltage limit imposed on protected circuitry during worst-case transient events.
TPSMB30-12HE3_A/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- PAR®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 25.6V
- Voltage - Breakdown (Min):
- 28.5V
- Voltage - Clamping (Max) @ Ipp:
- 41.4V
- Current - Peak Pulse (10/1000µs):
- 14.5A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 185°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
TPSMB30-12HE3_A/I FAQ
1.How can I place an order for TPSMB30-12HE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMB30-12HE3_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 TPSMB30-12HE3_A/I reliable?
The price and inventory of TPSMB30-12HE3_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 TPSMB30-12HE3_A/I is usually 5 days.
3.What payment methods are accepted for TPSMB30-12HE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMB30-12HE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMB30-12HE3_A/I?
TPSMB30-12HE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMB30-12HE3_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 TPSMB30-12HE3_A/I?
For technical support, including TPSMB30-12HE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMB30-12HE3_A/I requirements.
6.How does Aetrix verify that TPSMB30-12HE3_A/I is sourced from the original manufacturer or authorized distributors?
All TPSMB30-12HE3_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 TPSMB30-12HE3_A/I meets industry standards.
7.What is the process for return or replacement of TPSMB30-12HE3_A/I?
All TPSMB30-12HE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with TPSMB30-12HE3_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 TPSMB30-12HE3_A/I part is unused and in its original packaging.
Return procedure for TPSMB30-12HE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMB30-12HE3_A/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
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 …
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…
