Alimentation AC-DC modulaire TDK-Lambda Vega450

K40061 = Custom OEM part number for Vega450 unit, not a standard model. This power unit is manufactured in the UK, a 450W pluggable multi-output modular alimentation, widely deployed in semiconductor equipment, test & measurement instruments and medical devices.

1. Basic Electrical Specifications

2. Règle de dénomination du modèle (Vega450)

V4 = Vega450 (V6=650W, V9=900W)

Refroidissement: F=Forward airflow; R=Reverse airflow; Q=Quiet; CB=Fanless

Terminaison: S=Screw terminal; F=Fast-on connector; IE=With IEC input switch

Courant de fuite: S=Standard; L=Low leakage (common for medical applications)

Option Board: F=Fault Inhibit; E=Enable; W=Programmable Standby

Suffix string: Codes for each output module (B1S, C3, D2, E1, etc.)

Kxxxx (K40061): Custom OEM part number assigned by TDK for system integrators. It binds the complete set of module combination, fan and signal board configuration.

Remarque importante: Units marked K40061 from different equipment OEMs may have different module combinations; Never purchase replacement unit solely by K40061. You must verify the model of every output module.

3. Output Module Types (Common across Vega Platform)

B Series: Low voltage high current (1.8~5V)

C Series: Moyenne tension (9~31V)

Série D: Large plage de tension (3.8~21.5V)

E Series: High current wide voltage modules

Modules can be hot-plug replaced individually. Only the faulty output module needs replacement instead of the entire power supply, which is the biggest advantage of this platform.

4. Common Failure Points (For Maintenance)
5. Electrolytic capacitor aging inside output modules: Symptom – normal voltage at no load, voltage drop under load, flashing PG signal, intermittent protection (Most frequent fault)
6. Swollen electrolytic capacitors on main PFC board
7. Worn bearing of built-in fan, reduced airflow, over-temperature shutdown
8. Oxydation & poor contact on module socket, lost or fluctuating single-channel output
9. Aged Inhibit / PG signal board; power supply fails to start with zero voltage on all outputs

Maintenance Warning: Before plugging/unplugging Vega modules, power off and wait for bulk capacitors to fully discharge to avoid electric shock. Module pin definitions cannot be arbitrarily interchanged.

5. Des pièces de rechange & Options de remplacement

Option 1: Original OEM Spare Parts (Priority for Repair)

1. Complete Power Unit: Source stock Vega450 unit marked K40061; long lead time, high price and limited stock.
2. Module-level Repair: Read each module model printed on the slot of power supply and purchase individual modules for replacement, moindre coût.

Option 2: Successor Platform Vega-Lite

Vega-Lite 550W, simplified next-generation version; Chassis, pin assignment and modules are NOT directly plug-and-play compatible. Rewiring and mounting hole modification required.

Option3: New Modular Power Supply for Retrofit (New Project Modification)

TDK-Lambda QM Series: New generation multi-output modular power supply with PMBus, functional equivalent to Vega

Alternatives nationales: Zipper, Meanwell modular multi-output power supply; shorter lead time and lower price. Inconvénient: PG/Inhibit signal logic and mounting dimension differ, rewiring required, not direct drop-in replacement.

6. Label Information to Extract
7. Full Vega450 model (V4FSSF……)
8. Model of each output module (par exemple. B1S, C3)
9. Tension de sortie & current of every channel
10. Fan type (Avant / Reverse airflow)
11. Target equipment (SMT mounter / Semiconductor tester?)

Overview of TDK-Lambda Vega450 Output Modules

Vega450, Vega650, Vega900 share mutually compatible module hardware. Vega450 chassis accepts maximum 5 pluggable modules; singlee single/dual-output, jusqu'à 11 outputs in total. Voltage coverage: 1.8V～64V, maximum current 114A, No minimum load requir module can bement.

Module naming rule: Prefix B/C/D/E/F/H/L/W/Z + nombre + L/H (L=Low voltage version, H=High voltage version); suffix S = screw terminal, F = fast-on terminal

B Series (Low Voltage Modules, 1.8~16.2V)

C Series (Medium Voltage Single Output Modules)

Série D (Wide Voltage Modules)

E Series (High Current Low Voltage Modules)

Série F (Ultra-high Current Low Voltage Modules)

H Series (Dual-output Modules, largement utilisé)

One module delivers two independent outputs, saving slot space. H modules are commonly used in OEM power supplies such as K40061

H1L/1L: 1.8~3.8V 12A / 1.8~3.8V 8A

H1L/1H: 1.8~3.8V 12A / 3.9~5.5V 8A

H1H/1L: 3.9~5.5V 12A / 1.8~3.8V 8A

H1H/1H: 3.9~5.5V 12A / 3.9~5.5V 8A

H2, H3 series: Medium voltage dual outputs from 5.6~25V

L / W / Z Series

L1: 4.2~5.5V, 35UN

W Series: High voltage modules, up to 62~64V, suitable for 24V/48V outputs

Z Series: Parallel composite modules. Two identical Vega modules pre-paralleled internally for higher output current (Z2/Z3/Z4/Z6, max 114A)

✅ Key Notes for Maintenance & Achat de pièces de rechange

1. Modules can be replaced individually, no need to replace whole Vega450 unit; but Modules cannot be cross mixed (B module cannot replace C module)
2. Suffix L/H must not be ignored: B1L and B1H differ in hardware and voltage range. Wrong replacement causes abnormal output and OVP protection.
3. Total power limit of Vega450 chassis: 450W. Sum power of all installed modules cannot exceed 450W; Vega650 max 650W, Vega900 max 900W
4. High failure rate modules: H dual-output modules, B1H (5V). Internal electrolytic capacitor aging is the most typical fault.
5. K40061 is a fixed module configuration of Vega450. When repairing, quote directly by the module model printed on the power slot (par exemple. H1L/1H), instead of using K40061 only.

Supplémentaire: Module Terminal Types

S: Borne à vis (Mainstream for industrial & équipement semi-conducteur)

F: Fast-on connector terminal

Parallel Application of TDK-Lambda Vega450 Output Modules

✅ Parallel connection is available, but direct external wiring parallel is not allowed. The official qualified solution is Z module (Factory pre-paralleled with built-in active current sharing). Standard modules are NOT recommended for field direct parallel.

1. Two Parallel Modes

① Z Module (Official Standard Parallel Solution, widely used in K40061 equipment)

Z module = Two identical standard Vega modules pre-paralleled at factory, equipped with built-in active current sharing bus and busbar. Current matching is completed before delivery to increase output current.

Example Z7 = D3+D3 parallel, 8~16.5V, total 45.6A

Exigences: Two modules of exactly same model, mounted on adjacent slots, internal current sharing wiring pre-connected

Fonctionnalité: Even load sharing, protection interlock, officially approved solution. Specify Z module during ordering. Finished power supply comes as a single Z module instead of two discrete modules wired on site.

Essentiellement, Z module integrates two same modules in parallel. Total current ≈ double of single module. Total power shall not exceed Vega450 limit of 450W.

② Manual Field Parallel (⚠️ Not recommended by OEM, use cautiously for repair & modification)

Standard B/C/D/E/H discrete modules are not recommended to directly parallel output terminals on site:

1. Standard modules have no external current share pins. Hard parallel connection leads to severe current imbalance. One module bears most load, resulting in overheating, OVP/OLP protection or burnt module.
2. If modules are equipped with N option (current share option), same-model modules can be paralleled with current share signal wiring; prerequisites:

Two modules identical model & same batch

Installed on adjacent slots

Star-point current sharing signal wires and Remote Sense sampling wires connected synchronously

Positive/negative output cables with strictly same gauge & longueur

Total power consumption under load shall not exceed Vega450 450W limit

Most legacy OEM power supplies such as K40061 have standard modules without N current share option, cannot be paralleled on site.

2. Limites critiques (For Repair & Des pièces de rechange)
3. Different model modules must never be paralleled (B module cannot parallel C module). Different voltage ranges cause reverse current and module damage.
4. H dual-output module: The two channels inside one H module cannot be paralleled mutually. One channel of H module can only parallel single channel of another identical module (N current share option required).
5. Chassis power constraint: Vega450 max 450W. Total power after parallel counts towards chassis power budget and must not exceed 450W.
6. Protection interlock: After parallel, Inhibit and Module Good signals need series connection to ensure synchronous start/stop and synchronous latch on fault.
7. Remote Sense: For parallel application, remote sensing wires of both modules must connect to the same sampling point on load, otherwise voltage imbalance occurs.
8. Practical Maintenance Recommendation (For your K40061 Power Supply)
9. If higher output current required: Check whether original configuration uses Z module. When Z module fails, purchase complete Z module replacement. Do not build parallel combination manually from discrete modules.
10. Adding new parallel channels on legacy Vega450 is not advised: High aging risk of main board and fan. CEM & safety certification will be invalid after modification. Semiconductor machine vendors usually reject such modification.
11. Emergency bench test: Never power up parallel modules under no load / charge légère, circulating current may damage modules.
12. Parallel vs Series Distinction

Parallèle: Voltage unchanged, current doubled (Z module)

Série: Current unchanged, voltage stacked (BB/CC/DD combined modules, different concept from parallel)